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Zf Friedrichshafen Ag patents


Recent patent applications related to Zf Friedrichshafen Ag. Zf Friedrichshafen Ag is listed as an Agent/Assignee. Note: Zf Friedrichshafen Ag may have other listings under different names/spellings. We're not affiliated with Zf Friedrichshafen Ag, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "Z" | Zf Friedrichshafen Ag-related inventors


 new patent  Method and device for determining an energy-efficient operating point

A method of determining an energy-efficient operating point of a machine tool of a machine tool system with which identical workpieces for processing can be supplied to the machine tool sequentially in time. The machine tool has an operating point dependent machine cycle time and an operating point dependent power demand. ... Zf Friedrichshafen Ag

 new patent  Frictional shifting element for a vehicle transmission

A frictional shift element for a transmission of a vehicle, including a first friction element and a second friction element, wherein one friction element of the first and second friction elements has an approximately annular friction surface, and the other friction element of the first and second friction elements has an approximately annular base body and a plurality of friction surface elements distributed over a periphery of the approximately annular base body. The friction surface and the plurality of friction surface elements are brought into contact with each other in an overlap area for transmitting torque, wherein the friction surface elements protrude radially into the overlap area. ... Zf Friedrichshafen Ag

 new patent  Method for steering a vehicle, controller for a motor vehicle, and motor vehicle

A method of steering a vehicle having a front axle steering mechanism and, in particular, a rear axle steering mechanism. It is proposed that interventions are carried out at the rear axle to maintain the vehicle on course, at the same time, interventions are carried out at the front axle steering mechanism to avoid a restoring self-alignment of the front wheels.. ... Zf Friedrichshafen Ag

Transmission arrangement, overall transmission and mobile agricultural machine

A transmission assembly including a torque input shaft and a torque output shaft and input idler gears, input fixed gears and shift elements, each of which is associated with an input idler gear, are arranged on the torque input shaft, and output idler gears, output fixed gears and shift elements, each of which are associated with an output idler gear, are arranged on the torque output shaft, with the result that a plurality of different torque transmission paths from the torque input shaft to the torque output shaft may be implemented. The transmission arrangement has an additional torque transmission path that may be implemented. ... Zf Friedrichshafen Ag

Frequency-dependent damping valve arrangement

A damping valve arrangement for a vibration damper is disclosed. This damping valve arrangement includes a damping piston with a check valve and a control arrangement with a control pot and a control piston that is axially movable therein. ... Zf Friedrichshafen Ag

Frequency-dependent damping valve arrangement

A damping valve arrangement for a vibration damper includes a damping piston with a check valve and a control arrangement with a control piston. A spring element is arranged between the control piston and the check valve that loads a valve disk axially in direction of a flow channel and the control piston in direction of the pot base 30 with a defined spring force. ... Zf Friedrichshafen Ag

Friction element for a frictional shifting element for a vehicle transmission

A friction element (1, 3) for a frictional shift element for a transmission of a vehicle, the friction element having an annular base body with a plurality of friction surface elements (5), the plurality of friction surface elements (5) protruding radially inwardly or radially outwardly and are distributed over a periphery of the annular base body. The friction element (1, 3) and the plurality of friction surface elements (5) are each formed as one piece.. ... Zf Friedrichshafen Ag

Axial ball joint

Axial ball joint (1), particularly for use in a steering gear (7), which includes a joint housing (2) open on a first side for receiving a joint ball (4) attached to a joint stud (5). A housing stud (3) is arranged on the joint housing (2). ... Zf Friedrichshafen Ag

Spindle drive and an actuator comprising a spindle drive

A spindle drive (1) having a spindle (2) with a spindle thread (2a), and spindle nut (3) with a nut thread (3a). The spindle thread (2a) and the nut thread (3a) form a movement thread (4) having a crown clearance (5), a root clearance (6) and a flank clearance. ... Zf Friedrichshafen Ag

Automatic transmission of a vehicle, comprising a central synchronizing device, and method for operating an automatic transmission

An automatic transmission (3) of a vehicle having a central synchronization device (8) with at least one shift element (33; 9, 10) assigned to a transmission input shaft (32; 6, 7) and being a friction locking brake, an actuating device (14) driven by supplying energy, and at least one transmission region (34; 12, 13) disposed between the brake and a transmission output shaft (30), an operative connection between the transmission input shaft and the transmission output shaft and different transmission ratios are producible over the at least one transmission region. The brake is transferable with the operative connection and the actuating device (14) into an operating state in which a transmission input shaft (6) interacting with the brake (33; 9, 10), is held in a rotationally fixed manner by the brake (33; 9, 10), wherein the brake (33; 9, 10) is held by the actuating (14) without any energy infeed.. ... Zf Friedrichshafen Ag

Frequency-dependent damping valve arrangement

A damping valve arrangement (1) for a vibration damper includes a damping piston (2) with a check valve, which damping piston (2) divides a cylinder (31) of the vibration damper into a first working chamber (32) and a second working chamber (33), and a control arrangement (3) with a control pot (8) and a control piston (9) which is axially movable therein. A connection channel (41) connects the first working chamber (32) to the second working chamber (33). ... Zf Friedrichshafen Ag

Joint connection and arrangement for mounting a wheel

An articulated joint (1) for the articulated connection of a first chassis component (2) to a second chassis component (3), which includes a joint body (4) with a central axis (m) and a rotational axis (a). A housing (6) holds the joint body (4) such that the joint body (4) can be attached to the first chassis component (2) and the housing (6) can be attached to the second chassis component (3). ... Zf Friedrichshafen Ag

Parking lock gear mechanism, and method for operating a parking lock gear mechanism of a vehicle

The present disclosure describes a parking lock gear mechanism including a planetary gear train with a sun gear, a ring gear, and at least one planet gear that meshes with the sun gear and the ring gear. The at least one planet gear may be attached to a rotating planet carrier. ... Zf Friedrichshafen Ag

Control arrangement for a transmission brake with a quick exhaust valve

An assembly (12) for actuating a transmission brake (1) that has a transmission brake cylinder (7), at least one control valve (16, 17) for controlling pressurizing and/or exhausting of the transmission brake cylinder (7), and at least one pressure line (14) via which the at least one control valve (16, 17) is connected to the transmission brake cylinder (7) to supply a pressure medium (10) to and discharge the pressure medium (10) from a pressure chamber (9) of the transmission brake cylinder (7). The assembly (12) includes a quick-exhaust valve (15), which is arranged in the pressure line (14) between the transmission brake cylinder (7), and the at least one control valve (16, 17).. ... Zf Friedrichshafen Ag

06/21/18 / #20180172152

Method and control device for operating a motor vehicle

A method for operating a motor vehicle having a transmission (1), the method including closing a first number of shift elements and opening a second number of shift elements in each selected, force locking gear ratio of the transmission (1); closing one shift element less, and therefore opening one shift element more than in a selected, force locking gear ratio when a transmission (1) is not force locking in the sailing mode; adjusting the respectively closed and opened shift elements as a function of at least one operating condition of the motor vehicle in the sailing mode; and checking, at least on the basis of the rotational speed of the transmission input shaft (2), whether a previously closed, positively locking shift element (a, f) to be opened is actually opened in the sailing mode during adjusting of the respectively closed and opened shift elements.. . ... Zf Friedrichshafen Ag

06/21/18 / #20180172142

Shift control method for an automated range-change transmission

A method of controlling the gear shifting of an automatic range-change transmission, which is arranged between a drive engine and a final drive in a drive train of a motor vehicle and includes at least one mufti-stage main transmission, a two-stage front-mounted group upstream of the main transmission, and a transmission brake. The main transmission can be shifted, via unsynchronized clutches, and the front-mounted group can be shifted, via synchronized clutches. ... Zf Friedrichshafen Ag

06/21/18 / #20180172106

Damping valve

A damping valve includes a valve body with a stepped opening for receiving a preloading spring which acts on a tension rod at which is arranged a valve disk which at least partially closes a flow-out orifice of a flow channel which connects two opposite valve body sides to one another, and, in addition to the preloading spring force, a damping force which counteracts a swiveling movement of the valve disk acts on the tension rod. The additional damping force is formed by a displacer on the tension rod side. ... Zf Friedrichshafen Ag

06/21/18 / #20180170136

Independent suspension

An independent wheel suspension includes a knuckle which is supported on a spring support connected to a vehicle body. The knuckle is connected to the spring support via a knuckle pin and is arranged so as to be mounted rotatably around a longitudinal axis a of the knuckle pin. ... Zf Friedrichshafen Ag

06/21/18 / #20180169817

Method and device for reducing the energy demand of a machine tool and machine tool system

A method for reducing an energy demand of a machine tool (2, 3, 4) of a machine tool system (1), wherein the machine tool system (1) comprises at least a first machine tool (3), with a first machine cycle time, and a second machine tool (4), with a second machine cycle time. Identical workpieces (9) are transported sequentially in time for processing (101, 107), first to the first machine tool (3) and then to the second machine tool (4). ... Zf Friedrichshafen Ag

06/14/18 / #20180163792

Claw shifting element

A shift element (4) for an automatic transmission having a hydraulically actuable piston; at least one hydraulic duct (10); an axially movable first shift element half (3, 7) operatively connected to the piston; a second shift element half (8); a bearing carrier (9); a ring-shaped component (1); and a hall sensor (6) in the bearing carrier (9). The first shift element half (3) has a notch-like encoder contour (5) for the hall sensor (6). ... Zf Friedrichshafen Ag

06/14/18 / #20180163775

Ball joint

A ball joint having a housing, an opening and an inner circumferential surface facing the opening and extending around a longitudinal axis. The housing holds a ball socket that opens toward the opening and has an overlap region that is inclined radially inward, in the direction of the opening, and which, with the circumferential surface, delimits an annular space. ... Zf Friedrichshafen Ag

06/14/18 / #20180162402

Method for controlling a rolling mode or a freewheel mode of a vehicle

A method for controlling a rolling or a freewheeling mode of a vehicle having a drive-train with an engine, an automatic or automated transmission and controllable means for interrupting force flow in the drive-train. A current vehicle position and a first road stretch, between the current vehicle position and a road stretch section ahead along which a speed limit applies, are determined. ... Zf Friedrichshafen Ag

06/07/18 / #20180156315

Transmission device having a transmission input shaft, having a transmission output shaft and having three planetary gear sets

A transmission system (1) including a transmission input shaft (2), a transmission output shaft (3), and three planetary gear sets (p1, p2, p3) having a total of seven interface shafts (w1-w7). The planetary gear sets (p1, p2, p3) are at least partially functionally connected to each other by planetary gear set shafts (s1-hr3), are at least partially connectable to each other through a plurality of shift elements (b1, b2, k1-k3; b1-b3, k1-k3), and are coupled to the seven interface shafts (w1-w7) by the planetary gear set shafts (s1-hr3) such that at least six gear ratios (1vm-6vm, r1vm, r2vm) are selectable such that the transmission input shaft (2) and the transmission output shaft (3) revolve with the same or different direction of rotation.. ... Zf Friedrichshafen Ag

06/07/18 / #20180156298

Damping valve mechanism

A damping valve device includes an actuator which carries out an axial displacing movement on a sliding sleeve. The sliding sleeve, along with a fixed valve carrier, forms a slide valve which has two flow directions. ... Zf Friedrichshafen Ag

06/07/18 / #20180154770

Portal axle

The invention is directed to a portal axle for low-slung vehicles, comprising a portal housing 1, 1′ into the interior 2 of which is guided proceeding from an axle bracket side a drive shaft 17 on which a drive wheel 3 is arranged so as to be fixed with respect to rotation relative to it, with intermediate wheels 4 which are rotatably mounted on bearing pins 12 in the portal housing 1, 1′ and which can be rotatably driven by the drive wheel 3 and by means of which an output wheel 5 which is arranged in the portal housing 1, 1′ on an output shaft so as to be fixed with respect to rotation relative to it can be rotatably driven, this output wheel 5 projecting into a hub carrier 6 which can be fixedly connected to the portal housing 1, 1′. The drive shaft 17 and the output shaft extend so as to be axially offset, and a brake caliper of a disk brake is arranged radially adjacent to the portal housing 1, 1′. ... Zf Friedrichshafen Ag

06/07/18 / #20180154717

Wheel suspension system

A wheel suspension assembly (1) for a vehicle, having a spring damper (2), a first transverse link (4), which has a first transverse link strut (4a) and a second transverse link strut (4b), a second transverse link (5), a first tie rod (6), a second tie rod (7), a reversing lever (8), a hub carrier (9), a steering gear (10) and a pendulum support (11). Each transverse link (4, 5) has an end (12), on the hub carrier side, and two ends (13, 13a, 13b), on the chassis side. ... Zf Friedrichshafen Ag

05/31/18 / #20180149266

Transmission control system

A transmission which includes input and output shafts and first and second step-down devices for producing various step-down ratios. The first and second step-down devices are associated with first and second controllable clutches, respectively, in order to connect, in a torque-transmitting manner, the respective step-down device between the input shaft and the output shaft. ... Zf Friedrichshafen Ag

05/31/18 / #20180149265

Method for controlling a continuously variable transmission for a vehicle

A method of controlling a continuously variable transmission for a vehicle. The continuously variable transmission has a hydrostat with a position-regulating valve and is designed to co-operate in driving connection with a drive input shaft and a drive output shaft such that when the position-regulating valve is energized, the hydrostat is adjusted to accelerate the vehicle. ... Zf Friedrichshafen Ag

05/31/18 / #20180149264

Method for operating an automatic transmission control

A method of operating an automated transmission control for a powershift transmission having a plurality of powershift gears and a synchronized transmission having a plurality of synchronized gears in the drive-train of a vehicle. The drive-train includes a drive motor, the powershift transmission and the synchronized transmission, with an electronic control unit by which an upshift of the gears of the synchronized transmission and the upshift of the gears of the powershift transmission can be carried out, and to which a motor load signal representing the motor load of the drive motor and a rotational speed signal representing the rotational speed at the output of the drive motor can be sent.. ... Zf Friedrichshafen Ag

05/31/18 / #20180147909

Adjustable spring support

Adjustable spring support includes a first spring plate and a second spring plate, wherein at least one of the spring plates is axially adjustable relative to the other spring plate by an actuator, wherein the actuator is supplied with pressure medium via a pump which is driven by a motor and which is connected to a supply receptacle, wherein the motor, the pump and the supply receptacle form a constructional unit, and the constructional unit provides a cylindrical surface of the actuator.. . ... Zf Friedrichshafen Ag

05/31/18 / #20180147903

Transverse control arm

A transverse control arm (1) of an axle arrangement for a vehicle having two transverse control arm struts (2, 3) and at least three kinematics points (4, 5, 6). Each of the two transverse control arm struts (2, 3) has a carrier hub end (9) and a carriage end (10). ... Zf Friedrichshafen Ag

05/24/18 / #20180142785

Shift control method for an automated range-change transmission

A method for shift control of an automated auxiliary transmission that is mounted in a drive train of a motor vehicle between a drive motor (am) and a final drive, and includes at least one multi-step main gearing (hg) and one two-step front-mounted group (vg) connected upstream of the main gearing (hg), and with which the main gearing (hg) can be shifted via unsynchronized clutches and the front-mounted group can be shifted via synchronized clutches. Depending on the currently existing driving or operating situation, a gear change is performed in the auxiliary transmission through a change in the transmission ratio step (g1, g2, g3) of the main gearing (hg) while maintaining the currently engaged transmission ratio step (k1, k2) in the front-mounted group (vg).. ... Zf Friedrichshafen Ag

05/17/18 / #20180134144

Gearing for a motor vehicle, and hybrid drive train with same

A transmission (g) for a motor vehicle comprising an upstream gear set (vrs), a main gear set (hrs) with a total of four shafts (w1, w2, w3, w4) referred to in order of rotational speeds as first, second, third and fourth shafts, an electric machine (em), and at least five shift elements (a, b, c, e, f), the selective pairwise closure of which realizes at least eight selectable forward gear ratios (g1-g8) between a drive shaft (gw1) and an output shaft (gw2) of the transmission (g). The upstream gear set (vrs) provides a rotational speed at a fifth shaft (w5) increased relative to the rotational speed of the drive shaft (gw1), in a fixed transmission ratio with respect to the drive shaft (gw1). ... Zf Friedrichshafen Ag

05/17/18 / #20180134141

Transmission for a motor vehicle and hybrid drive train provided therewith

A transmission (g) for a motor vehicle includes three planetary gear sets (p1, p2, p3), an electric motor (em) and five shift elements (b1, k1, k2, k3, k4). Selective engagement of the five shift elements (b1, k1, k2, k3, k4) realizes at least eight selectable forward gear ratios (g1-g8) between an input shaft (gw1) and an output shaft (gw2) of the transmission (g).. ... Zf Friedrichshafen Ag

05/17/18 / #20180134140

Transmission for a motor vehicle, drive train for a hybrid vehicle, and method for operating such a drive train

A gearbox (g) for a motor vehicle having a drive shaft (gw1); an output shaft (gw2); an electric machine (em); and first and second minus planetary gear sets (p1,p2), the first planetary gear set (p1) being a stepped planetary gear set. A ring gear (e31) of the first planetary gear set (p1) is rotationally fixedly immobilizable via a fourth shift element (06). ... Zf Friedrichshafen Ag

05/17/18 / #20180134139

Transmission for a motor vehicle and hybrid drivetrain provided therewith

A transmission (g) for a motor vehicle including an input shaft (gw1), an output shaft (gw2), three planetary gear sets (p1, p2, p3) with three elements each, and five shift elements (b1, k1, k2, k3, k4). The third planetary gear set (p3) has first and second couplings (v1, v2), wherein the first coupling (v1) is between the first elements (e12, e13) of the second and third planetary gear sets (p2, p3), the second coupling (v2) is between the third element (e33) of the third planetary gear set (p3) and the output shaft (gw2), and the second element (e23) of the third planetary gear set (p3) is permanently connected to the input shaft (gw1). ... Zf Friedrichshafen Ag

05/17/18 / #20180133917

Control of a metal-cutting machining process by means of p-controller and a load-dependent control factor

A method for controlling a cutting machining process on a machine tool by a p-controller that changes a controlled variable u(t) affecting the cutting machining process based on a control deviation e(t) between a control quantity y(t) and a guide quantity w(t). To improve the control, the control factor (k) of the p-controller is variable and determined depending on instantaneous value of the control quantity y(t) via load characteristic fields. ... Zf Friedrichshafen Ag

05/10/18 / #20180128339

Vibration damper with an external housing

Vibration damper (1) with an external housing (9) includes an outer cylinder (3) with a main axis. The housing (9) having two receiving spaces (13, 15) is arranged on an outer lateral surface of the outer cylinder (3). ... Zf Friedrichshafen Ag

05/03/18 / #20180123422

Electrical machine and vehicle transmission

An electrical machine has a housing (2), a stator (3) arranged in the housing (2) in a rotationally fixed manner, and with a rotor (4) mounted so that the rotor (4) can rotate in the housing (2). A degree of freedom is provided, in the radial direction, between the housing (2) and the stator (3) so as to permit material-related thermal expansion differences between the housing (2) and the stator (3) in the radial direction. ... Zf Friedrichshafen Ag

05/03/18 / #20180119767

Damping valve for a vibration damper

A damping valve (1) for a vibration damper, includes a damping valve body (3) with at least one through-channel (13; 15) whose outlet side is at least partially covered by at least one valve disk (17; 19), wherein the at least one valve disk (17; 19) lifts from a valve seat surface (21) during impingement via the through-channel (13; 15), and a supporting disk (23), as stop, limits the lifting movement, wherein the supporting disk (23) is outfitted in direction of the valve disk (17; 19) with an elastomeric support (25) which is formed by a plurality of individual supporting elements (25).. . ... Zf Friedrichshafen Ag

04/19/18 / #20180108467

Inductive load control

A plurality of inductive loads (105) are connectable in parallel with one another between first and second terminals (120, 125), to which a controllable voltage (205) is applied. A method (300, 400) for operating the loads (105) includes the steps of detecting (305, 405) the connection of a previously non-energized load (105) between the terminals (120, 125); setting (310, 410, 435) the voltage (205) to a predetermined first value (210), and, after the lapse of a predetermined time interval (315, 415), adjusting the voltage (205) to a predetermined second value (215), with the second value (215) being lower than the first value (210).. ... Zf Friedrichshafen Ag

04/19/18 / #20180106331

Splitter gearbox, overall transmission and mobile agricultural machine

A splitter transmission including an input shaft, an output shaft and a countershaft. Two disk clutches, that can be coupled by a respective common clutch bell, are arranged on each of the input shaft, the output shaft and the countershaft. ... Zf Friedrichshafen Ag

04/19/18 / #20180105150

Method and control unit for operating a vehicle

A method of operating a vehicle (2) which recurrently travels along the same routes (1) with defined stopping points (3) along each of the routes (1). The parameters for operation of the vehicle (2) along the routes (1) are specified, on the basis of which the vehicle (2) can be braked, before the stopping points (3), and brought to rest at the stopping points (3).. ... Zf Friedrichshafen Ag

04/12/18 / #20180102304

Electronic module and method for encapsulation thereof

An electronic module of a control device of a vehicle includes at least one interconnect device, with electronic structural elements as the control unit, and at least one electronic component electrically connected to the interconnect device via a connecting region, wherein the structural elements of the interconnect device and each connecting region between the interconnect device and each dedicated electronic component are coated with an encapsulating material. Furthermore, a method for encapsulating an electronic module is disclosed.. ... Zf Friedrichshafen Ag

04/05/18 / #20180093557

Planetary gearing device having a plurality of planetary gear set shafts and at least one further rotatably supported shaft

A planetary transmission includes a plurality of planetary gear sets. Each of the plurality of planetary gear sets has a plurality of planetary gear set shafts. ... Zf Friedrichshafen Ag

03/29/18 / #20180087663

Control device for an infinite hydrostatic mechanical power split transmission

A device for controlling a gear ratio of a hydrostatic mechanical power-split transmission comprises an input switch (1) which, when rotated, produces a particular transmission characteristic and, at the same time, limits the maximum pressure. The selected position of the input switch (1) selects a particular maximum pressure curve from a large number of stored maximum pressure curves.. ... Zf Friedrichshafen Ag

03/29/18 / #20180087582

Pressure plate assembly and vehicle

A pressure plate assembly for a motor vehicle with a wear compensation mechanism which comprises a sensor element for sensing wear, wherein the sensor element has an angle lever or is constructed as an angle lever; and a motor vehicle, including such wear compensation mechanism.. . ... Zf Friedrichshafen Ag

03/22/18 / #20180080506

Clutch assembly

A rotating shifting element arrangement for an automatic transmission of a vehicle, having a cylinder element (2), is proposed, in which an actuating piston (3) for actuating a shifting element (1) is arranged in an axially movable way, a compensating cavity (4) of the shifting element (1) being provided by way of the actuating piston (3) and an oil dam (5), and wherein the oil dam (5) is fixed radially outside the piston face (6) of the actuating piston (3).. . ... Zf Friedrichshafen Ag

03/15/18 / #20180073626

Transmission

A gearbox comprising a gearbox housing at least partially surrounding a cavity, an oil sump connected to the gearbox housing and surrounding another cavity, and a separating element separating the cavity from the other cavity and having a passage through which oil located in the cavity is fed into the other cavity. The passage is arranged in a plane at an intersection line between a first oil level upper side and a second oil level upper side. ... Zf Friedrichshafen Ag

03/15/18 / #20180073612

Automatic planetary transmission

An automatic transmission with housing, input shaft, output shaft, four planetary gear sets, and six shift elements. Second element of second planetary gear set forms first shaft; second element of third planetary gear set forms second shaft; first elements of first and second planetary gear sets form third shaft; third element of third planetary gear set forms fourth shaft; second element of first planetary gear set and third element of second planetary gear set form fifth shaft; third element of first planetary gear set forms sixth shaft; first elements of third and fourth planetary gear sets form seventh shaft; and third element of fourth planetary gear set forms eighth shaft. ... Zf Friedrichshafen Ag

03/15/18 / #20180073611

Automatic planetary transmission

An automatic transmission includes first shaft, second shaft, four planetary gear sets, and six shift elements for forming different gear ratios between the first and second shafts. The first, third and fourth planetary gear sets are negative planetary gear sets and the second planetary gear set is a positive planetary gear set. ... Zf Friedrichshafen Ag

03/15/18 / #20180073610

Transmission and drivetrain for a motor vehicle

A motor vehicle transmission comprising a drive shaft, an output shaft, a planetary gear set system, and four shift elements. The first planet gear meshes with the first sun gear, first ring gear, and with one of the second planet gears. ... Zf Friedrichshafen Ag

03/15/18 / #20180072128

Active roll stabilizer of a motor vehicle and method for assembly

An active roll stabilizer of a motor vehicle including an actuator (8) in the form of a swivel motor arranged so as to rotate about a longitudinal axis of the vehicle. The swivel motor has an essentially cylindrical housing (12) with a cover, first and second stabilizer halves (18, 19) are connected to respective ends of the actuator for the transmission of torque, and a wiring harness (1) has a first end and a second end. ... Zf Friedrichshafen Ag

03/08/18 / #20180065547

Display device for displaying at least one symbol, switching device, and method for manufacturing a display device

A display device (100) for displaying at least one symbol has a translucent cover layer (210), a symbol layer (213) having a translucent symbol panel (216) for a symbol that is to be displayed by the display device (100), and an opaque surface (214) encompassing the symbol panel (216). The symbol panel (216) is disposed such that it is spaced apart from the cover layer (210) by a gap (226). ... Zf Friedrichshafen Ag

03/01/18 / #20180058549

Transmission arrangement which can be shifted under full load, and agricultural working machine

A transmission arrangement (1) for a vehicle, such as an agricultural working machine, that can be shifted under full load, including a plurality of torque-transmitting branches formed, on the drive input side, by alternatively shiftable gear stages of a splitter transmission (2) and, on the drive output side, by alternatively shiftable gear stages of a synchromesh transmission (3), so that each torque-transmitting branch is defined by engaging a gear of the splitter transmission (2) and by engaging a gear of the synchromesh transmission (3). The synchromesh transmission (3) has two input shafts (9, 10), each respectively in driving association with a powershiftable element (4, 5). ... Zf Friedrichshafen Ag

03/01/18 / #20180058548

Dual-clutch transmission

The invention proposes a dual-clutch transmission with two clutches (k1, k2), the input sides of which are connected with an input shaft (w_an) and the output sides of which are respectively connected with one of two coaxially disposed transmission input shafts (w_k1, w_k2). Further provided are at least two countershafts (w_v1, w_v2) on which idlers (i2, i3, i4, i5, ir) are rotatably mounted. ... Zf Friedrichshafen Ag

03/01/18 / #20180058547

Dual-clutch transmission

A dual-clutch transmission including first and second sub-transmissions, each having a respective input shaft. The input shafts can be coupled to a drive input shaft via a respective clutch. ... Zf Friedrichshafen Ag

03/01/18 / #20180058532

Vibration damper and vehicle

A vibration damper for a motor vehicle with a hydraulic unit and at least one valve for controlling the volume flow to the hydraulic unit, wherein the at least one valve and the hydraulic unit are arranged outside of the tube elements of the vibration damper and a motor vehicle including such vibration damper.. . ... Zf Friedrichshafen Ag

02/22/18 / #20180052010

Inductive position determination

A device for inductive positioning comprises a coil, an element for influencing a magnetic field in the area of the coil, a signal generator for providing a digital signal and a delay element with an input and an output, wherein the delay element is designed on the basis of the coil and a delay period between a signal edge at the input and a corresponding signal edge at the output is dependent on the inductance of the coil. The device further comprises a comparator to provide a digital differential impulse, whose length is dependent on a time difference of corresponding signal edges at the input and the output of the delay element, an integrator to provide a voltage depending on the length of the differential impulse and an evaluator to determine the position of the coil in reference to the coil based the voltage.. ... Zf Friedrichshafen Ag

02/22/18 / #20180051800

Multi speed transmission device with hydraulically actuated shift rods

A multi-speed transmission with hydraulically actuated shift rods, wherein an actuating pressure (p_b) is applicable by a valve device (15) and shuttle valves (2c to 6d) to piston chambers (2a to 6b) of pistons (2 to 6), the actuating pressure being adjustable by valves (16, 17). The piston chambers (2a to 6b) can be brought into operative connection with a low-pressure region (52) by the shuttle valves (2c to 6d) and a prefilling valve (32, 33) or by the shuttle valves (2c to 6d), the valve device (15), and the valves (16, 17). ... Zf Friedrichshafen Ag

02/22/18 / #20180051795

Control method for a transmission with hydraulic system comprising a variable displacement pump

A method for operating a transmission (3) with a hydraulic system comprising a variable capacity hydraulic pump, the method comprising determining during operation, a current hydraulic fluid volume requirement for actuating the transmission (3) and for temperature controlling and lubricating components of the transmission (3); setting the delivery volume of the hydraulic pump in a manner dependent on the currently determined hydraulic fluid volume requirement of the transmission (3), the delivery volume of the hydraulic pump, provided for temperature controlling and lubricating the components, being guided at least partially through a heat exchanger; wherein the delivery volume of the hydraulic pump is varied in a manner dependent on a temperature of the hydraulic fluid to an extent which sets that part of the delivery volume flow of the hydraulic pump which is to be guided via the heat exchanger.. . ... Zf Friedrichshafen Ag

02/22/18 / #20180051782

Transmission for a motor vehicle and drive train for a motor vehicle

A transmission includes a drive shaft, an output shaft, three planetary gear sets, and five shift elements, the first and second planetary gear sets are negative or minus gear sets. The third planetary gear set comprises three elements. ... Zf Friedrichshafen Ag

02/22/18 / #20180051757

Method for operating a dual-clutch transmission having a dual-clutch system comprising two clutches

A method for operating a dual-clutch transmission with two clutches. During realization of a ratio, a first clutch is closed and a second clutch is open. ... Zf Friedrichshafen Ag

02/22/18 / #20180050584

Vehicle transmission and hybrid drivetrain

A motor vehicle transmission including an interface to a drive unit, a drive shaft, an output shaft coaxial to the drive shaft, a differential transmission paraxial to the drive shaft, a device for forming gear ratios between the drive and output shafts, and an electric motor with a fixed stator and a rotatable rotor. The output shaft is connected with the differential transmission by a chain drive and a downstream gear set coaxial to the differential transmission. ... Zf Friedrichshafen Ag

02/15/18 / #20180045282

Multi-speed automatic transmission

An automatic transmission has a first clutch shaft that constantly connects first and fourth planetary gear sets, a second clutch shaft that constantly connects second and third planetary gear sets, and a third clutch shaft that constantly connects the third and first planetary gear sets. A drive shaft is constantly connected to the fourth planetary gear set; an output shaft is constantly connected to the third planetary gear set. ... Zf Friedrichshafen Ag

02/15/18 / #20180045281

Vehicle transmission

A transmission including a drive shaft, an output shaft, three planetary gear sets, and five shift elements, the first and second planetary gear sets are arranged in one gear plane, the first planetary gear set is a plus planetary gear set, and the second planetary gear set is a minus planetary gear set. The planetary gear sets are coupleable to one another to engage different gear ratios between the drive and output shafts. ... Zf Friedrichshafen Ag

02/15/18 / #20180045268

Absorber-type vibration damper

A tuned mass vibration damper (300), for example, for a drivetrain of a motor vehicle, for damping a vibration component of a rotational movement, includes at least three damper masses (110), at least one guide component part (130) to movably guide the at least three damper masses (110) such that the damper masses (110) are arranged so as to be offset along a circumferential direction (160) perpendicular to an axis of rotation (140) and can carry out the oscillations, and a damping component part (310) rotatable around the axis of rotation (140) of the rotational movement opposite to the at least one guide component part (130) and which comprises a support structure (340) and at least two damping structures (350) connected to the support structure (340). The damping structures (350) extend radially from the support structure (340) and are constructed and arranged such that one damping structure (350) of the at least two damping structures (350) when making contact with one of two adjacent damper masses (110) prevents a contact of the two adjacent damper masses (110).. ... Zf Friedrichshafen Ag

02/08/18 / #20180039297

Apparatus and method for adjusting a rotary or pivoting movement of a control element for a vehicle

Provision is made for a device for setting a rotational movement or pivoting movement of a control element for a vehicle. To this end, the device comprises a curved latching contour for defining at least a shift position of the control element. ... Zf Friedrichshafen Ag

02/08/18 / #20180038477

Sensor device for sensing a selector lever position and selector lever device for a motor vehicle

In one general aspect, the present disclosure is related to a sensor device for detecting selector lever positions of a selector lever for a motor vehicle. The sensor device may include at least four sensors and a code carrier, where the code carrier is arranged such that it is faced by the at least four sensors. ... Zf Friedrichshafen Ag

02/08/18 / #20180037080

Method of operating a motor vehicle, and motor vehicle

A method of operating a motor vehicle with a chassis system comprising at least two, preferably four vibration damper includes carrying out a body control and a wheel control with the chassis system, and controlling the energy supply for the chassis system via an energy control arrangement. A motor vehicle performing the method is also disclosed.. ... Zf Friedrichshafen Ag

02/01/18 / #20180031096

Double clutch transmission and method for operating a double clutch transmission

A dual clutch transmission including two sub-transmissions, each having an input shaft arranged on an input axis, an intermediate shaft and an output shaft which is the drive output of both sub-transmissions. The intermediate shaft can be connected to the input and output shafts. ... Zf Friedrichshafen Ag

02/01/18 / #20180031095

Double clutch transmission and method for operating a double clutch transmission

A dual clutch transmission for motor vehicles includes two sub-transmissions, each having an input shaft arranged on an input axis of the transmission. A drive output shaft on a drive output side of the transmission which is the drive output shaft of both sub-transmissions. ... Zf Friedrichshafen Ag

01/25/18 / #20180023998

Load profile

One general aspect of the present disclosure includes a control device for use in a vehicle. The control device may include a first counter and a second counter, where the first counter is assigned to a first weight range and the second counter is assigned to a second weight range. ... Zf Friedrichshafen Ag

01/25/18 / #20180023686

Method and device for producing a bearing element of a shifting device for a vehicle transmission, and bearing element and shifting device for a vehicle transmission

The invention relates to a method for the manufacturing of a bearing element of a shift device for a motor vehicle transmission. In a first process step a bearing element is provided, which comprises at least one projection and a coupling joint for the mechanical coupling of a selector lever in order to select a shift position of a motor vehicle transmission. ... Zf Friedrichshafen Ag

01/25/18 / #20180023634

Transmission and vehicle

A gear unit for a motor vehicle with a main input shaft and an auxiliary input shaft which is connected thereto via a constant gearwheel set step, wherein the constant gearwheel set step can further be connected to the output via a reverse gearwheel set step. At least one synchronized shifting clutch for connecting at least one idler gearwheel of the reverse gearwheel set step to the shaft carrying the idler gearwheel such that the idler gearwheel is fixed with respect to rotation relative to the shaft. ... Zf Friedrichshafen Ag

01/04/18 / #20180003259

Adjustable damping valve device

An adjustable damping valve device for a vibration damper, includes a main stage valve which is controlled by a pre-stage valve with a pre-stage valve body, which pre-stage valve can be actuated by an electromagnetic actuator, wherein an emergency operation valve controls the main stage valve during emergency operation, wherein an emergency operation armature is preloaded on the pre-stage valve body of the pre-stage valve by an emergency operation spring so that the pre-stage valve forms the emergency operation valve.. . ... Zf Friedrichshafen Ag

12/28/17 / #20170370468

Hydraulic valve system of a parking lock device

An electrohydraulic transmission control system (1) includes a parking lock valve (2). The electrohydraulic transmission control system (1) is configured such that, during normal operation of the electrohydraulic transmission control system (1) in which at least one electrohydraulic pressure adjuster (edssys) is actuatable with current, the parking lock valve (2) can be held in a defined operating state in which an actuation pressure (p_sys) acts on a parking lock cylinder (3) above a normal pressure level. ... Zf Friedrichshafen Ag

12/28/17 / #20170370312

Method for operating a drive train for a mobile vehicle

With a torque-controlled internal combustion engine and a variable-speed transmission having fixed shift gear ratios, during a shift, the internal combustion engine is controlled in such manner that the drive output torque of the transmission remains the same before and after the shift.. . ... Zf Friedrichshafen Ag

12/28/17 / #20170369040

Hydraulic valve system for actuating a parking lock device

An electrohydraulic transmission control system having a parking lock valve by which a parking lock cylinder of a parking lock device can be charged with an actuation pressure adjustable in an operating-state-dependent manner by at least one pilot pressure adjustable in the region of an electrohydraulic pressure adjuster and/or one pressure source. Above a defined actuation pressure level, the parking lock valve can be held in a defined operating state in which the actuation pressure can be applied to the parking lock cylinder. ... Zf Friedrichshafen Ag

12/21/17 / #20170363151

Clutch disk with torsional angular-dependent friction damping device

. . A torsion damper with at least one torque input disk and at least one torque output disk, wherein the torque input disk can move in circumferential direction relative to the torque output disk against the force of at least one spring storage, wherein the relative movement is damped by a friction device which generates a smaller friction torque in a first swivel angle range than in a second swivel angle range in that the friction device has at least two friction ring pairs which are rotatable opposite one another and which are activated depending on the swivel angle via a driving connection of at least one friction ring with the torque input disk. The driving connection has a spring element which is arranged functionally in series with the friction device and functionally in parallel with the spring storage.. ... Zf Friedrichshafen Ag

12/14/17 / #20170356534

Compact planetary gearbox

A transmission having at least one planetary stage (101), at least one spur gear stage (103) and a transmission housing (117). The planetary stage (101) includes a planetary carrier (107) mounted to rotate, one or more planetary gearwheels (109) mounted to rotate on the planetary carrier (107), and a rotatable sun gear (113). ... Zf Friedrichshafen Ag

12/07/17 / #20170350790

Clutch and motor vehicle

A clutch for a motor vehicle with a wear compensation mechanism which includes a sensor element for detecting wear, wherein the sensor element is formed of a plurality of parts, and at least two sensor component parts are rotatably connected to one another.. . ... Zf Friedrichshafen Ag

12/07/17 / #20170350729

Inductive position determination

A device for inductive position determination comprises a coil, a positional element, a scanning device for determining an inductance of the coil and an evaluation device for determining a position of the positional element in relation to the coil, based on the inductance determined. In certain embodiments, the positional element comprises a ferromagnetic and electrically insulated material.. ... Zf Friedrichshafen Ag

12/07/17 / #20170350489

Power split transmission

A power split transmission which has a first part (2) and a second part (22) the first part (2) includes a variator (10), a summing gearset (6) and a shiftable transmission gear assembly (18). A standard transmission can be used as the multispeed transmission (23).. ... Zf Friedrichshafen Ag

12/07/17 / #20170350486

Power shift transmission for an agricultural machine

A powershift transmission for agricultural machines, which is of modular design and has a first part (1) with a splitter group (3) and a second part (2) with a multi-speed transmission (4). The splitter group (3) is designed such that the rotational direction of the input shaft (5) and the rotational direction of the output shaft (8) remain the same, even when shifts are carried out in the splitter group (3).. ... Zf Friedrichshafen Ag

12/07/17 / #20170349041

Gearing for a motor vehicle, and a drive train with same

A transmission for a motor vehicle has an input shaft, output shaft, first and second minus planetary gear sets, and first electric machine with a rotationally fixed stator and a rotatable rotor connectable to the input shaft. The first planetary gear set is stepped and has planet gears of a larger and a smaller effective diameter. ... Zf Friedrichshafen Ag

11/30/17 / #20170343048

Shaft-hub connection of a double gear on a transmission shaft

A shaft-hub connection of a double gearwheel (2) on a transmission shaft (5), in which the double gearwheel (2) has a first gearwheel (3) and a second gearwheel (4), which are connected to one another in a rotationally fixed manner. The shaft-hub connection is in the form of a shrink fit (7) between a hub (8) of the first gearwheel (3) and the transmission shaft (5). ... Zf Friedrichshafen Ag

11/23/17 / #20170335954

Method for operating a vehicle drive train

A method for operating a vehicle drivetrain (1) includes decoupling, in the presence of a demand for realizing a sailing operating state of the vehicle drivetrain (1) during which a drive machine (2) is active and the power flow between the drive machine (2) and a drive output (3) is disconnected in a gearbox (4), the active drive machine (2) from the drive output (3) by opening of one of a plurality of shift elements (a to f) that is held in a closed operating state in order to realize the operating state present before the demand for decoupling of the active drive machine (2). The method also includes then actuating the plurality of shift elements (a to f) in a manner dependent on the present operating state profile of the vehicle drivetrain (1) and with the active drive machine (2) decoupled from the drive output (3).. ... Zf Friedrichshafen Ag

11/23/17 / #20170335926

Method for operating a vehicle drive train with a drive motor, an output and a transmission which is arranged between the drive motor and the output

A method for operating a vehicle drivetrain (1) includes proceeding, in the presence of the demand for activation of the engine start-stop function of the vehicle drivetrain (1) and a simultaneously shut-down drive machine (2), from an operating state of the vehicle drivetrain (1) during which a sailing operating function of the vehicle drivetrain (1) is active, during which the drive machine (2) is decoupled from the drive output (3), during which the positively engaging shift element (f) is open and during which a rotational speed (n_ab) of the drive output (3) is higher than a defined rotational speed at which a rotational speed difference between shift element halves of the positively engaging shift element (f) lies within a rotational speed range within which the positively engaging shift element (f) is transferrable into the closed operating state, and actuating the positively engaging shift element (f) in a closing direction no later than when the defined rotational speed is reached.. . ... Zf Friedrichshafen Ag

11/23/17 / #20170335919

Damping valve for a vibration damper

Damping valve having a damping valve body with at least one passage channel between two cover sides. An outlet opening of the passage channel leads into a cover-side annular channel which is limited by an outer annular valve support surface and by an inner annular valve support surface, the at least one annular valve support surface for at least one valve disk has a substantially constant width along the circumference, and the annular channel has a varying width along the circumference, and at least one valve support surface has a varying radius of curvature along the circumference.. ... Zf Friedrichshafen Ag

11/23/17 / #20170334421

Method for operating a vehicle drive train

A method for operating a vehicle drivetrain (1) having a drive machine (2), an output (3) and a gearbox (4) with the gearbox (4) arranged in power flow between the drive machine (2) and the output (3) includes opening, in the presence of a demand for activation of a sailing operating function of the vehicle drivetrain (1) and a simultaneously activated engine start-stop function, a positively engaging shift element (f) while the drive machine (2) is left both decoupled from the output (3) and shut down.. . ... Zf Friedrichshafen Ag

11/23/17 / #20170334393

Securing of a motor vehicle

A method for checking a motor vehicle comprises steps for transmitting an id stored in an electronic control device of a transmission of the motor vehicle, to a central facility, the comparison on the part of the central facility of the id with stored ids assigned to specific motor vehicles, the transmission of a notification regarding the comparison result from the central facility to the control device, and the issuing on the part of the control device of a signal, if the id has been located in the stored ids. The communication comprises an authentication of the central facility thereby.. ... Zf Friedrichshafen Ag

11/16/17 / #20170332482

Electrical circuit and method for producing an electrical circuit

One general aspect of the present disclosure includes an electrical circuit with a circuit carrier, at least one electrical component arranged on the circuit carrier, and at least one data transmission device with an antenna section. The data transmission device may be configured for wireless transmission of data and may include a housing, where the at least one electrical component, the at least one data transmission device, and at least one section of the circuit carrier are at least partially enclosed by the housing. ... Zf Friedrichshafen Ag

11/16/17 / #20170328437

Sealing/guiding unit

A seal guide unit for guiding and sealing a piston rod of a vibration damper having a first guide element and a second guide element fixedly connected to the first guide element and arranged coaxial to the first guide element, and a radially moveable piston rod seal arrangement arranged coaxially between the two guide elements and is at least indirectly surrounded in circumferential direction by at least one guide element, including a defined radial annular gap, and comes in at least indirect axial contact with at least one guide element. The piston rod seal arrangement includes a piston rod seal and a sliding element which encloses the piston rod seal in circumferential direction and axially limits the piston rod seal at least on one side. ... Zf Friedrichshafen Ag

11/16/17 / #20170328419

Jaw clutch

The invention relates to a dog clutch (10) with an axially fixed coupling element (12) and an axially movable coupling element (14), in which the axially fixed coupling element (12) and the axially movable coupling element (14) are configured to be sleeve-shaped and are disposed coaxially to one another, in which the axially movable coupling element (14) is axially displaceable by means of a pressurizing medium-actuatable piston (22) to establish a positively locking connection with the axially fixed coupling element (12), in which the piston (22) is disposed in a longitudinally displaceable manner in a cylinder housing (20), which radially on the outside carries the axially movable coupling element (14), in which the piston (22) is connected to the axially movable coupling element (14) via a piston pin (26), and in which a pressurizing medium (40) can be supplied to the cylinder space (60) of the cylinder housing (20) via a supply duct (38), wherein, at one axial end, the piston (22) is permanently connected to a coaxially aligned sensor bolt (48) and, on a sensor section (52) in the area of its free, piston-remote axial end (78), the sensor bolt (48) is configured as a transmitter element for a position sensor (70).. . ... Zf Friedrichshafen Ag

11/09/17 / #20170321798

Gearshift device for a vehicle transmission and method for determining a selector lever position in a gearshift device for a vehicle transmission

The disclosure relates to a shifting device for a vehicle transmission. The shifting device comprises a gearshift lever for selecting a transmission setting of the vehicle transmission, wherein the gearshift lever can move along at least one first shift gate and one second shift gate, a marking element mechanically coupled to the gearshift lever, having at least one first marking line dedicated to the first shift gate and one second marking line dedicated to the second shift gate, a guide assembly, which is configured to guide the marking element along the first marking line to a detection position when the gearshift lever is moved along the first shift gate, and to move the marking element along the second marking line to the detection position when the gearshift lever is moved along the second shift gate, and lastly, a detection device, which is disposed at the detection position and is configured to create a movement signal representing a movement of the first marking line and/or the second marking line in relation to the detection position, in order to determine a position of the gearshift lever in the first shift gate and/or the second shift gate.. ... Zf Friedrichshafen Ag

11/09/17 / #20170321762

Clutch disk for a motor vehicle

A clutch disk (10) for a motor vehicle includes at least two axially opposed friction linings (18), a lining spring (16) and a drive carrier disk (14) with a spring window (24), wherein the lining spring (16) has at least one fastening portion (16a), a supporting portion (16b) and a plurality of spring segments (16c) arranged adjacent to one another in circumferential direction, and the spring segments (16c) are arranged radially outside at the supporting portion (16b) of the lining spring (16), and the fastening portion (16a) is arranged radially inside at the supporting portion (16b).. . ... Zf Friedrichshafen Ag

11/09/17 / #20170321761

Clutch disk for a motor vehicle

A clutch disk (10) for a motor vehicle includes at least two axially opposed friction linings (18), a lining spring (16) and a drive carrier disk (14), wherein the lining spring (16) has at least one fastening portion (16a), a supporting portion (16b) and a plurality of spring segments (16c) arranged adjacent to one another in circumferential direction, and the spring segments (16c) are arranged radially outside at the supporting portion (16b) of the lining spring (16), and the fastening portion (16a) is arranged radially inside at the supporting portion (16b).. . ... Zf Friedrichshafen Ag

11/09/17 / #20170320386

Planetary multi-stage transmission

Proposed is a multi-stage transmission in planetary design in a housing (9) for a vehicle comprising at least one electric motor (em) and comprising three planetary gear sets (rs1, rs2, rs3), wherein a drive (an) can be connected by means of a shift element (k0) to a first shaft (1), and an output (ab) is connected to a second shaft (2), wherein there are provided four additional shafts (3, 4, 5, 6) and at least five shift elements (b1, k1, k2, k3, k4), through the actuation of which at least eight forward gears (g1, g2, g3, g4, g5, g6, g7, g8) can be implemented. According to the invention, the first element of the first planetary gear set (rs1) is connected to the housing (9), wherein the first shaft (1) is permanently connected to the second element of the first planetary gear set (rs1); wherein the rotor (10) of the electric motor (em) is connected to the third element of the first planetary gear set (rs1); and wherein the third element of the first planetary gear set (rs1) can be connected by means of at least one shift element (k3, k4) to at least one element of at least one additional planetary gear set (rs2, rs3).. ... Zf Friedrichshafen Ag

11/09/17 / #20170320369

Mechanical component having a force sensor

A mechanical component for a vehicle, having a measurement region with a surface, and a force sensor is associated with the measurement region for detecting a force to which the component is exposed. The force sensor includes a layer of carbon nanotubes applied to the surface of the measurement region.. ... Zf Friedrichshafen Ag

10/26/17 / #20170311459

Arrangement for making contact with a printed circuit board

The present disclosure pertains to an arrangement comprising a housing, a circuit board arranged in the housing and at least one flat contact to connect the circuit board with an electrical component arranged outside of the housing, whereby the housing has a breakthrough that the flat contact protrudes from, whereby the circuit board has breakthrough that the flat contact reaches through, that the circuit board has a contact tab on the side facing away from the housing breakthrough and whereby a molded seal is inserted in the housing breakthrough and the molded seal positively encloses the flat contact and whereby the contact tab is connected with the flat contact in an electrically conductive manner.. . ... Zf Friedrichshafen Ag

10/26/17 / #20170310118

Inductive position determination

A device for the inductive positioning comprises a signal generator, a coil connected with the signal generator, an element for influencing the inductance of the coil depending on its distance to the coil and an evaluator to determine the position of the element with regard to the coil on the basis of a voltage on the coil. The signal generator thereby provides a square wave signal.. ... Zf Friedrichshafen Ag

10/26/17 / #20170309539

Control device and method for monitoring a function of a semiconductor component during the operation thereof and electrical assembly having a control device

A control device for monitoring a functioning of a semiconductor component during its operation may comprise an input interface configured for receiving a sensor signal corresponding to a contact-less determined temperature distribution on a surface of the semiconductor component, and an evaluation device configured to determine, based on the sensor signal, whether the temperature distribution fulfills a predefined decision criterion corresponding to an operation of the semiconductor component outside a normal operating state. An output interface is designed to issue an emergency signal when the decision criterion is fulfilled, wherein the emergency signal triggers the execution of an emergency measure.. ... Zf Friedrichshafen Ag

10/26/17 / #20170307080

Parking lock device for a motor vehicle

In one aspect, the present disclosure provides a parking brake device for a motor vehicle. The device may include a vehicle transmission including a parking lock and a gear selector lever coupled with the parking lock, where the gear selector lever is movable into a parking lock position for engaging the parking lock, and where the gear selector lever is movable out of the parking lock position for disengaging the parking lock. ... Zf Friedrichshafen Ag

10/26/17 / #20170307071

Method for operating a drivetrain of a motor vehicle, and drivetrain module of motor vehicle of said type

A method for operating a drivetrain of a motor vehicle, includes, when the motor vehicle is at a standstill and upon demand for a drive torque of the motor vehicle, increasing power (25p) supplied to a separate electric pump drive (25) such that a pressure chamber whose pressurization effects a complete closure or lock-up of a launch element (3) is fast charged with hydraulic pressure from a pump (24). The method also includes performing a launch process of the motor vehicle with the drive source (1) and with a closed or locked-up launch element (3) and reducing the power (25p) supplied to the separate electric pump drive (25) after fast charging the pressure chamber. ... Zf Friedrichshafen Ag

10/26/17 / #20170307067

Coupling device for a gearshift lever, gearshift lever device, and method for producing a coupling device

A coupling device for a shift lever of a motor vehicle shift lever device includes a moving sliding element having a receiver for accommodating a section of a shift lever and a guide for guiding a two-dimensional movement of the sliding element. The guide has at least one guide element with which the sliding element is engaged. ... Zf Friedrichshafen Ag

10/26/17 / #20170307064

Planetary gearing

A planetary transmission includes a planetary gear set (1), another planetary gear set (2), a fluid line (3) through which fluid is flowable to the planetary gear set (1) and to the other planetary gear set (2), and a fluid collecting device (4) which is in fluid communication with the fluid line (3). The fluid collecting device (4) is connected in a rotationally fixed manner to the planetary gear set (1). ... Zf Friedrichshafen Ag

10/26/17 / #20170307055

Transmission arrangement

A transmission (ga) for an axle drive (1) of a motor vehicle includes a drive shaft (an), two output shafts (ab1, ab2), at least four shafts (w1, w2, w3, w4), a differential, and two interconnected planetary gear sets (ps1, ps2). The drive shaft (an) is a hollow shaft, and the drive shaft (an) is coaxial with at least one of the two output shafts (ab1, ab2). ... Zf Friedrichshafen Ag

10/26/17 / #20170307030

Method for operating a drive train of a motor vehicle, and drive train module of said motor vehicle

A method for operating a drive train of a motor vehicle includes performing a startup operation of the motor vehicle or a stopping operation of the motor vehicle. A starting component (3) is engaged or bridged during the startup operation or the stopping operation of the motor vehicle. ... Zf Friedrichshafen Ag

10/26/17 / #20170305223

Structural component for a motor vehicle

A structural component for a motor vehicle, with a component body (2) made from a sheet, which includes at least one shell-shaped body portion (3) formed from the sheet and at least one receiving bush (6) formed from the sheet that extends along its circumference between first and second circumferential ends (4, 5), which at the first circumferential end (4) merges into the shell-shaped body portion (3) and at the second circumferential end (5) merges into a strengthening strip (7) formed from the sheet and attached to the shell-shaped body portion (3). The strengthening strip (7) completes the shell-shaped body portion (3) to form an at least partially closed hollow section (8).. ... Zf Friedrichshafen Ag

10/12/17 / #20170294776

Electronic unit comprising an esd protective arrangement

The disclosure relates to an electronic unit with a circuit board having at least one component arranged on a main surface of the circuit board and a casing element, which incorporates the at least one component, as well as with an esd protection arrangement for the circuit board. According to the disclosure, open areas on the circuit board, which are not covered by the casing element, are covered with a gold layer directly mounted on a copper surface of the circuit board.. ... Zf Friedrichshafen Ag

10/12/17 / #20170292586

Torsional vibrating damping assembly, in particular mass damper unit

A torsional vibration damping arrangement, in particular mass damper subassembly, having a carrier which can be driven in rotation and a damper mass rotatably deflectable with respect to the carrier against the restoring action of a substantially radially extending damper spring. The damper spring is fixedly clamped in the damper mass and is supported or supportable with respect to the carrier for transmitting circumferential force. ... Zf Friedrichshafen Ag

10/05/17 / #20170287609

Electric power control with a dither signal

A method for controlling a current flowing through a consumer comprises the following steps, which are periodically traversed: determining a dither current based on a dither signal and a definite point in time, wherein the dither signal is determined by a frequency, an amplitude and a signal form and actuating a flow control valve to produce the sum of a target current and the determined dither current by the consumer. Furthermore, the method comprises determining an indication to the current flowing through the consumer; compensating the indication by the factor of the dither current; and providing the indication, wherein the determination of the dither current and the determination of the indication are synchronized with each other in a predetermined way.. ... Zf Friedrichshafen Ag

10/05/17 / #20170284475

Torsional vibration damper and start-up element

A torsional vibration damper has an input, an output and an intermediate mass arranged therebetween, a first plurality of spring elements coupled between the input and the intermediate mass that form a first stage, a second plurality of spring elements coupled between the intermediate mass and the output that form a second stage of the torsional vibration damper, at least one damper mass to damp the vibration component of the rotational movement. The first stage of the torsional vibration damper has a progressive first characteristic with at least one transition point. ... Zf Friedrichshafen Ag

10/05/17 / #20170282673

Connecting arrangement for a stabilizer of a vehicle

A connecting arrangement for a stabilizer of a vehicle, with at least one lever that extends transversely to a longitudinal direction. The lever has a bearing eye provided with a non-circular inner circumferential contour. ... Zf Friedrichshafen Ag

09/28/17 / #20170279216

Connection between an electrical cable and a bus bar

The present disclosure provides an arrangement for connecting an electrical cable and a bus bar, where the bus bar includes an insulation device, and wherein the electrical cable includes a cable shoe attached an extruded body. The arrangement may include a connecting device, where the connecting device electrically connects the cable shoe of the electrical cable with the bus bar. ... Zf Friedrichshafen Ag

09/28/17 / #20170276244

Torque converter device and method for controlling a fluid circuit of a torque converter device

A torque converter device and to a method for controlling a liquid circuit of a torque converter device. The torque converter device includes a housing arrangement and a hydrodynamic device arranged in the housing arrangement. ... Zf Friedrichshafen Ag

09/28/17 / #20170276170

Link rod for a motor vehicle

A link rod for a motor vehicle, with a connecting rod (4) designed with an open profile that extends in an axial direction (x), which comprises a back (8) and two opposed sidepieces (9, 10) which are connected to one another by the back (8), extending away from the back so as to enclose an angle (a) of less than 180° between them. Two joints (2, 3) are connected to one another by the connecting rod (4), each joint comprises a joint housing (5) and an inner joint component (6) that is fitted and able to move in the housing and extends outwardly therefrom. ... Zf Friedrichshafen Ag

09/21/17 / #20170273205

Media-tight housing

The present disclosure relates to an assembly comprising a housing and at least one busbar for connecting a printed circuit board disposed in the housing to a power supply present outside the housing, wherein the housing has a penetration, from which the busbar projects, wherein a magnetic core and a gasket accommodating the magnetic core are placed in the housing penetration in a media-tight manner, and the gasket, together with the magnetic core, encompasses the busbar in a form-fitting manner.. . ... Zf Friedrichshafen Ag

09/21/17 / #20170268660

Assembly for blocking and enabling a shifting position of a shifting element

A system for locking and releasing a shifting position of a shifting element that is hydraulically actuatable by an actuating pressure is provided. The shifting element is arranged coaxially with a transmission shaft. ... Zf Friedrichshafen Ag

09/21/17 / #20170268659

Hydraulic control device for an automatic transmission

A hydraulic control device for an automatic transmission includes a shut-off valve arranged between a first pressure adjusting device and a respective shifting element cylinder of a plurality of shifting elements. In the first shifting position of the shut-off valve, the first pressure adjusting device is hydraulically connected to the respective shifting element cylinder through the shut-off valve. ... Zf Friedrichshafen Ag

09/21/17 / #20170268597

Rotary vibration damping arrangement for the drivetrain of a vehicle

A torsional vibration damping arrangement has an input region with a primary mass driven in rotation around an axis of rotation, and an output region. A first and a second parallel torque transmission paths (48), and a coupling arrangement having a planetary gear unit with a planet wheel element for superimposing the torques guided via the torque transmission paths are provided between the input region and the output region. ... Zf Friedrichshafen Ag

09/14/17 / #20170261101

Device reducing drag loss in an automatic transmission

A drag torque reduction device for an automatic transmission includes a hydraulic controller with a parallel connection of a pressure relief valve, a constant aperture and a temperature-dependent, switchable aperture that is positioned upstream of a radiator relative to a flow of fluid to the radiator. The parallel connection is disposed between a first control edge of a converter switching valve and a first line. ... Zf Friedrichshafen Ag

09/14/17 / #20170261091

Device reducing drag loss in an automatic transmission

A drag torque reduction device for an automatic transmission includes a hydraulic controller with a diversion for excess cooling oil into an oil sump that is positioned upstream of a radiator relative to a flow of fluid to the radiator. The diversion includes a temperature-dependent, switchable aperture and a switching valve. ... Zf Friedrichshafen Ag

09/14/17 / #20170261062

End cap for a piston-cylinder unit

An end cap for a piston-cylinder unit with a base which has a through-opening and carries a seal, wherein at least one discharge channel extends radially proceeding from the seal, and wherein the discharge channel is constructed at the end cap on the inner side with respect to an outer cover surface.. . ... Zf Friedrichshafen Ag

09/07/17 / #20170254438

Electromagnetic actuator and valve

The invention relates to an electromagnetic actuator and a valve having such an actuator. The actuator has a first magnetic coil and a second magnetic coil, as well as at least one permanent magnet and an anchor that can be moved axially by the magnetic coils and the permanent magnet between a first and a second position, on which at least one spring device acts in the axial direction. ... Zf Friedrichshafen Ag

09/07/17 / #20170254390

Powershift transmission for working machines

A powershift transmission of a flexible design for a working machine. The powershift transmission has at least six transmission shafts (2, 8, 15, 17, 22, 27, 30) arranged spaced apart from one another. ... Zf Friedrichshafen Ag

08/31/17 / #20170250631

Method and arrangement for monitoring a permanently excited synchronous machine

The present disclosure provides a method for monitoring a rotor position sensor of a psm machine having at least three phases operated by a field oriented control, where the electrical angle of the psm machine may corresponds with a rotor position. A first calculation of the electrical angle of the psm machine may be based on a measured mechanical rotor position and the pole-pair number of the psm machine. ... Zf Friedrichshafen Ag

08/31/17 / #20170248505

System and method for detecting overloading, wear and/or failure of a ball joint

A system and method for detecting wear and/or failure of a ball joint. The system having a ball housing which retains a ball head of the ball joint therein. ... Zf Friedrichshafen Ag

08/31/17 / #20170248249

Electromagnetic valve with spring tongues

The invention relates to an electrically operable valve with an electrical coil and with several spring tongues, which are movable by means of a magnetic field generated by the coil between a first switch position and a second switch position each and with several first valve openings, which are opened when the spring tongues are in the first switch position and which are closed by means of the spring tongues when the spring tongues are in the second switch position.. . ... Zf Friedrichshafen Ag

08/24/17 / #20170240016

Vibration damper and motor vehicle

A vibration damper with a piston, a piston rod fastened to the piston, a working chamber divided by the piston into a first working chamber and second working chamber, and a generator drivable by movement of the piston rod. The damping force of the vibration damper can be influenced by energization of the generator. ... Zf Friedrichshafen Ag

08/24/17 / #20170239735

Drilling milling tool and methods for producing a through-hole

A drilling and milling tool (100) for a metallic workpiece, with a drilling and milling shank (120) having a plurality of circumferentially-cutting cutter tips (151, 152, 153, 154) and a plurality of front-end-cutting cutter tips (131, 132). At least one of the front-end-cutting cutter tips (132) is, at the same time, a circumferentially-cutting cutter tip whose radially outermost cutting point or cutting edge section projects, in the radial direction (r), beyond the circumferentially-cutting cutter tips (151 152, 153, 154). ... Zf Friedrichshafen Ag

08/17/17 / #20170234939

Magnetic field sensor, module with a magnetic field sensor and method to manufacture a module with a magnetic field sensor

Magnetic field sensor having a magnetic field sensor element and at least a band-shaped electrical contact element, in which the at least one contact element has at least one undercut section to fix in spatially form-fitting manner the magnetic field sensor at a support during the at least sectional injection molding process with a plastic material. Magnetic field sensor module, the magnetic field sensor module comprising a support with at least a fixing section for a magnetic field sensor and a plastic injection molding, wherein the magnetic field sensor module has at least such a magnetic field sensor and the magnetic field sensor is spatially fixed in form-fitting manner with its at least one undercut section at the at least one fixing section of the support and is injection molded with plastic material at least in sections, and a method for producing such a magnetic field sensor module, wherein the method comprises the following steps: correctly positioned arrangement of the at least one magnetic field sensor at the support, wherein the at least one magnetic field sensor with its at least one undercut section is arranged at the at least one fixing section, which has not yet been reshaped; reshaping the at least one fixing section to fix in spatially form-fitting manner the at least one magnetic field sensor at the support; injection molding the support at least in sections and/or the magnetic field sensor with plastic material.. ... Zf Friedrichshafen Ag

08/17/17 / #20170234422

Flow output determination method for a hydraulic pump in a transmission hydraulic system

A method for determining a conveying capacity of a hydraulic pump includes opening a blockable flow cross-section in order to connect a pressure side of the hydraulic pump to an area of the hydraulic system through the flow cross-section after operating the hydraulic pump driven at a defined rotational speed. The flow cross-section is configured with the hydraulic pump such that an entire conveying volume flow provided by the hydraulic pump is guided through the flow cross-section when the flow cross-section is open. ... Zf Friedrichshafen Ag

08/10/17 / #20170227087

Assembly concept for a torsional vibration damping arrangement for the powertrain of a vehicle

A torsional vibration damping arrangement, having an input region and an output region. There is provided between the input and output region a first torque transmission path and, a parallel second torque transmission path and a coupling arrangement for superposing the torques. ... Zf Friedrichshafen Ag

08/10/17 / #20170227068

Coupling arrangement for the powertrain of a vehicle

A coupling arrangement for the powertrain of a vehicle with a clutch housing with a feed arrangement for feed medium contained in the clutch housing and with a clutch mechanism, wherein the clutch mechanism has input-side clutch units communicating with an input-side clutch unit carrier, output-side clutch units communicating with an output-side clutch unit carrier, and a pressing device through which an operative connection between the input-side clutch units and the output-side clutch units can be produced or cancelled, and wherein the input-side clutch unit carrier is part of the feed arrangement. The feed arrangement further has a feed device which is associated with the input-side clutch unit carrier and which is connected to the input-side clutch unit carrier and/or to the pressing device so as to be fixed with respect to relative rotation.. ... Zf Friedrichshafen Ag

08/10/17 / #20170227004

Vane pump

A vane cell pump for a transmission of a motor vehicle includes a housing. A rotor defines a plurality of slots. ... Zf Friedrichshafen Ag

08/03/17 / #20170221661

Switching device and method for detecting whether said switching device is being actuated

A switch device is presented. The switch device comprises a magnet supported such that it can be tilted, a transmitter device coupled to the magnet, designed to cause a tilting movement of the magnet in response to a switch actuation of the switch device, and a sensor device, having a first sensor element and a second sensor element for detecting the tilting movement, wherein the first sensor element is designed to acquire a plurality of first magnetic field values of a magnetic field shift of a magnetic field generated by the magnet caused by the tilting movement, and the second sensor element is designed to acquire a plurality of second magnetic field values of a second magnetic field shift of the magnetic field generated by the magnetic caused by the tilting movement.. ... Zf Friedrichshafen Ag

08/03/17 / #20170219109

Adjustable damping valve device

An adjustable damping valve device for a vibration damper, includes a main stage valve which is controlled by a pre-stage valve which is functionally connected in series with the emergency operation valve. A pressure relief valve having the constructional form of a seat valve is arranged inside the emergency operation valve and is functionally connected in parallel with the emergency operation valve. ... Zf Friedrichshafen Ag

08/03/17 / #20170219062

Motor vehicle transmission

A vehicle transmission having a housing and a main transmission which includes input and output shafts and four planetary gearsets. Each of the gearsets has sun and ring gears, a carrier which supports a planetary gearwheel. ... Zf Friedrichshafen Ag

08/03/17 / #20170219047

Torsion damping arrangement for the powertrain in a vehicle

A torsional vibration damping arrangement includes: an input region, an output region, and a coupling arrangement communicating with the output region. A phase shifter arrangement communicates with the input region. ... Zf Friedrichshafen Ag

08/03/17 / #20170219042

Damping valve comprising a pressure relief valve

An adjustable damping valve (12) includes a pressure space (22c) for controlling the damping valve (12), which pressure space (22c) is arranged inside the damping valve (12) and is connected to a further space (20) via at least one choke orifice (30) for the flow of damping medium, and the pressure space (22c) is operatively connected to the further space (20) via a pressure relief valve (32).. . ... Zf Friedrichshafen Ag

08/03/17 / #20170218989

Assembly holder and assembly

A module mount having at least one module that can be mounted on the module mount, wherein the module can be mounted on the module mount via at least one caulking element, such that the respective caulking element, which is composed of a thermoplastic, extends through a hole in a section of the respective module that can be mounted on the module mount made of a thermoplastic or thermoset, and is hot-caulked at an end projecting out of the hole, wherein at least one projection is formed on the section of the respective module that can be mounted on the module mount in the region of the respective hole of the section of the respective module that can be mounted on the module mount made of the thermoplastic or thermoset, which projection is engaged in a press fit with the hot-caulked end of the respective caulking element.. . ... Zf Friedrichshafen Ag

07/27/17 / #20170211695

Power split transmission and method for operating such power split transmission

A power-split transmission which is designed to be operated with either first or second deceleration logics. The second deceleration logic has a higher deceleration dynamic than the first deceleration logic, and is designed to disengage an engaged range clutch immediately so as to reduce the transmission ratio by way of a hydrostatic unit with a maximum dynamic. ... Zf Friedrichshafen Ag

07/27/17 / #20170211694

Transmission device and method for operating the same

A power-split transmission device for a vehicle, which connects a drive engine to a drive output, having a hydrostatic unit for continuous adjustment of the transmission ratio at a transmission unit, and two range clutches that alternately operate for respectively associated driving ranges with different transmission ratios. A control unit, during regular vehicle deceleration, implements the driving range change from a first range, with higher transmission ratios, to a second range, with lower transmission ratios, by switching from the first to the second range clutch in accordance with a synchronous point dependent deceleration control logic. ... Zf Friedrichshafen Ag

07/27/17 / #20170210387

Method for operating a drive train

A rotational speed-regulated internal combustion engine in a working machine, for example a wheel loader, shortly before the engaging a bridging clutch of a hydrodynamic torque converter, is switched over in such manner that the internal combustion engine operates under torque regulation when the bridging clutch of the hydrodynamic torque converter is engaged.. . ... Zf Friedrichshafen Ag

07/27/17 / #20170210375

Hybrid module and drive train having such a module

A hybrid module (2) with a vibration reducing system (4) which is coupled between an output side (8) and an input side (6) of the hybrid module (2). The vibration reducing system (4) is configured to reduce an injected torsional irregularity, wherein the vibration reducing system (4) has a preload that is greater than an assembly-related preload. ... Zf Friedrichshafen Ag

07/27/17 / #20170210188

Ball joint for a chassis

A ball joint having a ball pin and a housing. The ball pin together with the ball is accommodated in the housing to move in a rotational and pivotal manner. ... Zf Friedrichshafen Ag

07/27/17 / #20170210187

Control arm and method for producing same

A method of producing a control arm for a motor vehicle, in particular a multi-point control arm, preferably a transverse control arm, which is substantially formed by a fiber-plastic composite structure. The method includes the steps: creating of a preform structure with load-adapted fiber orientation, introducing the preform structure into a forming tool, consolidating the preform structure in the tool by application of pressure and/or temperature, and removing and further processing of the control arm.. ... Zf Friedrichshafen Ag

07/20/17 / #20170207675

Coil for an electric machine

A coil for a stator of an electric machine, comprising a winding body with a winding area formed by a winding carrier and two legs that limit the winding area connected to the winding carrier. At least one leg has a first wire guide area, a coil winding arranged at the winding body and which has a winding wire with a winding start area and a winding end area and with coil ends extending, respectively, from the winding start area and the winding end area. ... Zf Friedrichshafen Ag








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