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Zf Friedrichshafen Ag
Zf Friedrichshafen Ag A Corporation
Zf Friedrichshafen Ag_20100114
Zf Friedrichshafen Ag_20100107
Zf Friedrichshafen Ag_20100121
Zf Friedrichshafen Ag_20131212
Zf Friedrichshafen Ag_20100128

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.

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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... Zf Friedrichshafen Ag

Grounding of a shaft

A transmission having a first component (101) mounted so as to rotate, a rotationally fixed second component (105) and a third component (107). The first component has a radially extending face and the third component (107) is fixed in the second component (105). The third component (107) is braced against... Zf Friedrichshafen Ag

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... Zf Friedrichshafen Ag

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

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)... Zf Friedrichshafen Ag

Neutralization of charged lubricant

An arrangement with a first electrode (101), a second electrode (103), at least one measuring device (107) and at least one voltage source (109). The voltage source (109) is designed to apply a first electric voltage to the first electrode (101) and the measuring device (107) is designed to measure... Zf Friedrichshafen Ag

Torsional damper with angular-dependent friction damping device

wherein in the second swivel angle range a relative movement in circumferential direction takes place between the torque output disk and the second friction ring group, and a relative movement in circumferential direction takes place between the torque input disk and the first friction ring group.... Zf Friedrichshafen Ag

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... Zf Friedrichshafen Ag

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... Zf Friedrichshafen Ag

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... Zf Friedrichshafen Ag

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... Zf Friedrichshafen Ag

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

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... Zf Friedrichshafen Ag

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

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... Zf Friedrichshafen Ag

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,... Zf Friedrichshafen Ag

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... Zf Friedrichshafen Ag

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... Zf Friedrichshafen Ag

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... Zf Friedrichshafen Ag

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... Zf Friedrichshafen Ag

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... Zf Friedrichshafen Ag

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... Zf Friedrichshafen Ag

Electrical circuit and 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... Zf Friedrichshafen Ag

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

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),... Zf Friedrichshafen Ag

Cold treatment for improving the load-bearing capacity of metallic components

A method for producing a metallic component, The method includes the method steps of first machining (103) the component and thereafter cooling (105) the component from a first temperature down to a lower second temperature. The cooling (105) occurs after the machining (103) of the component.... Zf Friedrichshafen Ag

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)... Zf Friedrichshafen Ag

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... Zf Friedrichshafen Ag

Gearshift device for a vehicle transmission and 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... Zf Friedrichshafen Ag

Switching a control system for a vehicle, and control system for a vehicle

The present disclosure relates to a shift device for a control system for a vehicle. The shift device may include at least one optical fiber for conducting a light signal, where the light signal has an input characteristic when entering the shift device, and where the light signal has an... Zf Friedrichshafen Ag

Adjustable damping valve device

An adjustable damping valve device has a first adjustable damping valve assembly for a first flow direction and a second adjustable damping valve assembly for a second flow direction. The two damping valve assemblies are adjustable independently from one another, and the first damping valve assembly generates a damping force... Zf Friedrichshafen Ag

Powershift multispeed reversing transmission

A powershifting multispeed reversing transmission includes a converter lockup clutch (31) arranged in a space (13) provided by arranging the forward-driving clutch (8) between the fixed gear (5) and the loose gear (7) on a forward-driving shaft, and the reverse-driving clutch (12) between the fixed gear (9) and the loose... Zf Friedrichshafen Ag

Gear pair of a gearbox

Gear pairing of a transmission with a first gear and with a second gear engaged with the first gear, whereby the first gear, in comparison to the second gear, is manufactured from a material that is less elastic or less soft, and whereby the first gear and the second gear... Zf Friedrichshafen Ag

Hydraulic supply arrangement and control method

Proposed is a hydraulic supply system in an automatic transmission of a vehicle, said hydraulic supply system having a primary hydraulic circuit (I) for supplying the transmission components, having a secondary hydraulic circuit (II) for lubricating and cooling the transmission components and having at least one pump (P) for generating... Zf Friedrichshafen Ag

Reset device for a transmission selector lever

A reset device for a gearshift lever for a gear step of a transmission in a motor vehicle comprises an electric drive device for controlling an operating element, in order to move the gearshift lever into a predetermined position, a position sensor for determining a position of the operating element,... 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... 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. The startup... 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... 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... Zf Friedrichshafen Ag

10/26/17 / #20170307067

Coupling device for a gearshift lever, gearshift lever device, and 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... 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... Zf Friedrichshafen Ag

10/26/17 / #20170307078

Stepped planetary gear

A planetary gear (101) with a first set of teeth (107) and a second set of teeth (109). The planetary gear comprises two components, namely, a first component (103) and a second component (105). The first component (103) includes the first teeth (107) and the second component (105) includes the... 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... Zf Friedrichshafen Ag

10/26/17 / #20170309539

Control device and 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... 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... 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... Zf Friedrichshafen Ag

10/19/17 / #20170299021

Power-split driveline for a work machine

A power-split drive train for a working machine having a main drive element, drive output shafts (Ab1, Ab2, Ab3), and a continuous power-split transmission with three drive units (2a, 2b, 2c). The transmission enables all three output shafts to be operated at the same time with rotational speed variability. A... Zf Friedrichshafen Ag

10/19/17 / #20170299022

Power-split driveline for a work machine

A power-split drive train having a main drive, three output shafts (Ab1, Ab2, Ab3) and a continuously variable powersplit transmission with three additional drive units. The transmission enables rotational speed variability at the shafts (Ab1, Ab2, Ab3). Furthermore, each drive unit (2a, 2b, 2c) has a respective energy converter (3a,... 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... 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... 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. A torsion-bar spring with a rotation axis extends in the longitudinal direction. The torsion-bar spring has... 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... 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... 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... Zf Friedrichshafen Ag

09/28/17 / #20170276244

Torque converter device and 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. The hydrodynamic device include an impeller wheel connected on the input side to a driveshaft... 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... 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... 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... 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. The system includes a stop valve. The stop valve is subjectable to a control pressure that is... 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... 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... 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... 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... 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. A loose wheel (25), connected to the clutch (26) for the third gear, meshes with a fixed... 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... Zf Friedrichshafen Ag

Patent Packs
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... Zf Friedrichshafen Ag

08/31/17 / #20170248505

System and 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. A ball race is received within the ball housing and receives the ball head of the ball joint. An inwardly facing... 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... 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... 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... Zf Friedrichshafen Ag

08/17/17 / #20170234422

Flow output determination 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.... 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... Zf Friedrichshafen Ag

08/10/17 / #20170227115

Threaded planetary pin

An arrangement for use, in particular, in the transmission of a wind turbine, having a planet carrier, at least one planet gear, at least one planetary pin and at least one bearing. The planet gear is mounted on the planetary pin, in a rotatable manner, by way of the at... 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. The plurality of slots runs radially. A plurality of vanes is arranged in the plurality of slots of the rotor. An end plate is positioned in a bottom area... 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... 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. A phase shifter arrangement in the first torque... Zf Friedrichshafen Ag

08/10/17 / #20170227115

Threaded planetary pin

An arrangement for use, in particular, in the transmission of a wind turbine, having a planet carrier, at least one planet gear, at least one planetary pin and at least one bearing. The planet gear is mounted on the planetary pin, in a rotatable manner, by way of the at... 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... 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... 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. A torque transmission path extending between the input region and the output region transmits a total torque. The torque transmission... Zf Friedrichshafen Ag

Patent Packs
08/03/17 / #20170219048

Coupling arrangement having a vibration reduction device and having a coupler device

A coupling arrangement is provided with a vibration reduction device and with a clutch device. The vibration reduction device has at least one torsional vibration damper, an input connected to a drive, and an output connected to the clutch device by which a connection between the vibration reduction device and... 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. The sun gear and the carrier of the second gearset are coupled permanently to... 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... Zf Friedrichshafen Ag

08/03/17 / #20170221661

Switching device and 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... Zf Friedrichshafen Ag

07/27/17 / #20170210187

Control arm and 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... 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. The ball is at least partially surrounded by a structural component. The structural component is essentially formed from a fiber-plastic... 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... 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... Zf Friedrichshafen Ag

07/27/17 / #20170211694

Transmission device and 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,... Zf Friedrichshafen Ag

07/27/17 / #20170211695

Power split transmission and 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... Zf Friedrichshafen Ag

07/20/17 / #20170203761

Operating a vehicle drive train of a working machine including a drive motor, a transmission and an output

A method for the operation of a vehicle drive-train of a working machine having a drive motor, a transmission whose transmission ratio can be varied continuously, and a drive output. A rotational speed (nmot) of the drive motor can be varied by the driver, by the driver's actuation of a... Zf Friedrichshafen Ag

07/20/17 / #20170204916

Starting element, gearbox and drive train with the start element

A starting element with a friction clutch and a piston configured to actuate the friction clutch. The starting element includes a piston space separated from a residual space of the starting element at least partially by the piston, a first connection constructed such that the piston is acted upon by... Zf Friedrichshafen Ag

07/20/17 / #20170204942

Multi-speed transmission for rail vehicles

A multi-speed transmission (9) for a rail vehicle. The multi-speed transmission (9) has at least one transmission input (AN), at least one transmission output (AB), at least one planetary gearset (PR1, PR2), at least one shifting element (SE1, SE2) and a housing (G). The planetary gearset (PR1, PR2) has a... 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... Zf Friedrichshafen Ag

07/13/17 / #20170198765

Method for reversing a direction of travel of a working machine comprising a power split transmission

A reversing method for reversing a travel direction of a working machine with a power-split transmission in which control signals are emitted by a control unit such that a reversing clutch, for the current travel direction, is disengaged and a reversing clutch for the new travel direction is engaged. The... Zf Friedrichshafen Ag

07/13/17 / #20170198805

Gear selection unit for an automatic transmission for a vehicle, and operating a gear selection unit

The present disclosure provides a gear selection unit for an automatic transmission. The gear selection unit may include a mount having a gate, where the gate has an automatic channel oriented in a longitudinal direction and a tapping channel disposed adjacent to the automatic channel, and where the automatic channel... Zf Friedrichshafen Ag

07/13/17 / #20170198811

Method for operating a power split transmission

During a shift from a first driving range to a second driving range in a continuously variable power-split transmission having a continuously variable branch and a mechanical branch, in which during the range shift, the synchronous rotation speed is kept constant, the range shift is discontinued if a predefined threshold... Zf Friedrichshafen Ag

07/06/17 / #20170190244

Module for a motor vehicle having an electric machine and a clutch actuating device

An assembly for a motor vehicle has an electric machine and a clutch actuating device. The electric machine has a machine housing, a rotor and a stator. The stator includes a stator carrier with a fluid cooling jacket constructed substantially as an annular space, a fluid inlet, and a fluid... Zf Friedrichshafen Ag

06/29/17 / #20170184191

Transmission

A transmission for a motor vehicle includes an electric motor. A rotor shaft is connected in a torque-proof manner to a rotor of the electric motor. At least one bearing directly supports the rotor shaft. A transmission shaft is connected in a torque-proof manner to the rotor shaft. Both the... Zf Friedrichshafen Ag

06/22/17 / #20170174208

Method and control unit to control a drivetrain

A method for operating a drive train of a motor vehicle includes closing a frictional-locking shift element that serves as a starting element of a transmission in a slipping manner such that slip at the frictional-locking shift element is reduced by a defined pressure control of the frictional-locking shift element,... Zf Friedrichshafen Ag

06/22/17 / #20170174217

Method of operating a power path with continuously power-split transmission and with secondarily coupled power split

A method for operating a vehicle drive-train having a continuously power-branched transmission with secondary coupling. In the open operating condition of reversing clutches of a reversing gear unit, torque applied in the area of a drive output can be supported by a range group in the area of a variator.... Zf Friedrichshafen Ag

06/22/17 / #20170175840

Cylinder, in particular for a tuned mass damper, having a sleeve-shaped add-on piece

A cylinder (1), particularly for a vibration damper, includes a base (3) and a sleeve-shaped add-on part (5) which at least partially surrounds the cylinder (1) and which has at an end of the cylinder a radially inwardly directed edge profile. The edge profile (11) contacts an end face of... Zf Friedrichshafen Ag

06/22/17 / #20170175843

Piston and cylinder unit with an add-on part

A piston-cylinder unit having a cylinder with an add-on part which has a fastening portion that contacts a contact surface of the cylinder. A positive engagement connection fixing the add-on part to the cylinder is provided between the add-on part and the cylinder. The positive engagement connection is formed by... Zf Friedrichshafen Ag

06/22/17 / #20170175879

Gear selector shift lever device, gear selector shift lever arrangement for a vehicle, and securing a gear selector shift lever device

A gear selection shift lever device for a vehicle is presented, which comprises a housing and an attachment device connected to the housing, wherein the housing has a cover surface, on which a shift lever can be or is disposed, and wherein the attachment device connected to the housing has... Zf Friedrichshafen Ag

06/22/17 / #20170179863

Arrangement and monitoring a psm-machine

A method is provided for monitoring a PSM machine having at least, or exactly, three phases, which are operated by means of a field oriented control, comprising the following steps: detection of whether one or more current sensors disposed on a phase of the PSM machine has malfunctioned, when a... Zf Friedrichshafen Ag








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