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Doosan Corporation patents (2016 archive)


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

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "D" | Doosan Corporation-related inventors


Control method using vibration control

The present disclosure provides a method for controlling combustor cans of a gas turbine. Detectors disposed on combustor cans are operable to detect combustion vibration values of the combustor cans. ... Doosan Corporation

Forklift and forklift control method

The present disclosure relates to a forklift and a forklift control method. The forklift and the forklift control method according to the present disclosure may adjust a fork/mast inclination with reference to the coefficient of friction, and precedently and appropriately adjust a fork/mast inclination right before the forklift enters or exits from a slope by referring to geological information. ... Doosan Corporation

Apparatus and method for detecting power abnormality of engine-type forklift truck

The present disclosures relates to an apparatus and a method for detecting power abnormality of an engine-type forklift truck, and the apparatus for detecting power abnormality of an engine-type forklift truck includes: a power supply unit including a pair of batteries so as to supply power to an electric device included in an engine-type forklift truck; an engine control unit (ecu) which receives power from the power supply unit; an equalizer which is provided between the power supply unit and the ecu so as to maintain a voltage balance between the pair of batteries and adjust a voltage of power supplied to the ecu; and an abnormality detecting unit which compares a voltage input from the pair of batteries with a voltage input from any one of the pair of batteries, and detects abnormality in the voltage balance.. . ... Doosan Corporation

Heat exchanger plate for transition liquid phase bonding

A heat exchanger includes a plurality of plates bonded by transition liquid phase (tlp) bonding. Since the plates are bonded by the transition liquid phase bonding a good bonding portion may be formed reducing defects therein, thereby enabling the heat exchanger to have a high quality. ... Doosan Corporation

Combustion duct assembly for gas turbine

A combustion duct assembly for a gas turbine includes a liner, an annular spring seal and a transition piece. The annular spring seal is outwardly convex and coupled to an outer face of the downstream side of the liner. ... Doosan Corporation

Fuel supply nozzle unit having sealing structure

A fuel supply nozzle unit includes a fuel supply nozzle, a rear end and an end plate. The fuel supply nozzle includes a front end that has a plurality of fuel supply holes. ... Doosan Corporation

Exhaust gas post-processing apparatus and control method therefor

The present disclosure relates to an exhaust gas post-processing apparatus and a control method therefore. The exhaust gas post-processing apparatus and the control method therefore according to the present disclosure are provided with a pressure sensor on an exhaust gas line and a sensor on front/rear ends of the exhaust gas post-processing apparatus which can measure the concentration and the quantity of nitrogen oxides. ... Doosan Corporation

Fluidized bed apparatus and its components

A fluidized bed heat exchanger with a chamber (24) comprises a solid particles inlet port (22), a solid particles outlet port (30), arranged at a distance to the inlet port (22), means (46) for introducing a fluidizing gas from a bottom area into the chamber (24). The heat exchanger has furthermore several heat exchange tubes (28) being arranged at a distance to each other. ... Doosan Corporation

Control system for construction machinery and control method for construction machinery using the same

A control system for construction machinery includes first and second hydraulic pumps connected to an engine, a swing control valve and a first boom control valve installed in a first center bypass line connected to the first hydraulic pump, a second boom control valve installed in a second center bypass line connected to the second hydraulic pump, a shutoff valve installed in a control line through which a boom raising pilot signal pressure is supplied to the first boom control valve and configured to selectively open and close the control line, and a control unit configured to electronically control the shutoff valve according to a manipulation signal, wherein the control unit closes the shutoff valve such that the first boom control valve is shifted to a neutral position when a swing operation priority mode is selected.. . ... Doosan Corporation

Hydrocarbon reformer including a core-shell catalyst

An illustrative example embodiment of a hydrocarbon reformer includes a vessel with at least one inlet and at least one outlet. A reforming catalyst is in the vessel includes a metal core and a rhodium layer deposited on the metal core. ... Doosan Corporation

Organic compound and organic electroluminescent element comprising same

The present disclosure relates to a novel compound and an organic electroluminescent element including the same, and the compound according to the present disclosure is used for an organic material layer of the organic electroluminescent element, thereby improving the light emitting efficiency, driving voltage, lifetime, and the like of the organic electroluminescent element.. . ... Doosan Corporation

Combustor liners with rotatable air guiding caps

A combustion liner includes air guiding caps which are respectively engaged to a mounting member and are turned in a flow direction of air so as to collect a fluid flowing around the combustion liner and feed it to the combustion liner, thereby smoothly introducing cooling air into the combustion liner. The combustion liner includes a plurality of through-holes which are formed in a surface of the combustion liner; and a plurality of air guiding caps provided on the combustion liner in plural rows arranged at regular intervals in a circumferential direction. ... Doosan Corporation

Hydraulic system of construction machinery and method of controlling hydraulic system

The present disclosure relates to a hydraulic system of construction machinery and a method of controlling the hydraulic system. The hydraulic system of construction machinery and the method of controlling the hydraulic system according to the present disclosure assign a weighted value for each operation, preliminarily distribute a (available torque that can be used) value that an engine can provide, through torque weighted values for each operation, and calculate surplus torque and deficient torque by comparing a preliminary distributable torque value to required torque. ... Doosan Corporation

Fuel supply nozzle for minimizing burning damage

A fuel supply nozzle for injecting fuel into a combustor in a shape of a pipe having an outer peripheral wall and an inner peripheral wall extended from a route to a tip. The fuel supply nozzle includes a first fuel discharge passage formed at the inside of the inner peripheral wall extending from the route to the tip, at least one or more vanes disposed on the outer peripheral wall spaced apart from the tip by a given distance and having vane fuel outlets communicating with the first fuel discharge passage, and a burning section formed on a given area adjacent to the tip to allow a thickness between the outer peripheral wall and the inner peripheral wall to be lower than the other section thereof.. ... Doosan Corporation

11/17/16 / #20160333552

Closed-circuit hydraulic system for construction machine

The present disclosure relates to a closed circuit hydraulic system for a construction machine including a plurality of actuators and a plurality of hydraulic pumps selectively supplying working oil to the plurality of actuators bidirectionally and the closed circuit hydraulic system includes: a charge line selectively connected with a low-pressure side hydraulic line which returns to the hydraulic pump from the actuator among hydraulic lines connecting the hydraulic pumps and the actuators; a charge pump supplying a supplement flow to the charge line; and a variable relief valve selectively changing a normal mode to limit a pressure of the charge line to a predetermined pressure or less and a boost mode to limit the pressure of the charge line to a pressure lower than the pressure of the charge line in the normal mode.. . ... Doosan Corporation

11/17/16 / #20160332619

Wheel driving device and wheel driving method for hybrid construction machine

The present disclosure relates to a wheel driving device and a wheel driving method for a hybrid construction machine, in which in a construction machine having wheels, particularly, a hybrid wheel loader, by small-capacity low-speed electric motors, small-capacity high-speed electric motors, transmissions each having a clutch, and a control unit which are installed for all of the wheels each, the wheel driving device drives the low-speed electric motor during low-speed driving and drives the high-speed electric motor during high-speed driving by turning on and off the clutch during the low-speed driving and the high-speed driving, thereby reducing manufacturing costs of the wheel driving device, improving fuel economy of the construction machine, reducing abrasion of tires mounted on the wheels, improving durability of the tires, and ensuring traveling stability.. . ... Doosan Corporation

11/10/16 / #20160326916

Supercritical co2 generation system

A supercritical co2 generation system including a compressor configured to compress a working fluid; a first heat exchanger that exchanges heat with the working fluid passing through the compressor; a high temperature turbine that expands the working fluid passing through the first heat exchanger and connects to a power generator to produce power; a second heat exchanger that exchanges heat with the working fluid passing through the compressor; a low temperature turbine that expand the working fluid passing through the second heat exchanger and connects to the power generator to produce power; a third heat exchanger between the first heat exchanger and the high temperature turbine that exchanges heat with the working fluid recuperated by the first heat exchanger; and a cooler that cools the working fluid passing through the high temperature turbine and the low temperature turbine and supplies the cooled working fluid to the compressor.. . ... Doosan Corporation

11/10/16 / #20160326721

Pressure peak reduction valve for excavator and pressure peak reduction system for excavator comprising same

The present disclosure provides a pressure peak reduction valve for an excavator. The pressure peak reduction valve includes at least: a poppet seat which has an inlet port, and at least one communication hole which communicates with a hydraulic tank and is formed in an outer circumferential surface of the poppet seat; a main poppet which slides in the poppet seat; a poppet spring which is provided in the main poppet; a valve seat which has one end portion inserted into the main poppet so as to be in contact with one end portion of the poppet spring; a cone which is provided to be inserted into an openable hole formed at an end portion of the valve seat; an adjustment screw which is provided in the valve seat; and a piston which slides in the adjustment screw.. ... Doosan Corporation

11/10/16 / #20160326029

Media filter having nonpowered mixing and coagulation basin, and seawater desalination plant and dissolved air floatation apparatus using same

A nonpowered mixing and coagulation basin is provided, which generates turbulences of at least two kinds inside the mixing and coagulation basin to which the raw water flows so that foreign matters contained in the raw water come into contact with each other while circulating by a water flow to be coagulated into a predetermined size, and a dissolved air floatation device using the same. The nonpowered mixing and coagulation basin has multiple stages with different packing materials and packing densities to form turbulent flows inside the raw water and control a flow speed, thereby uniformly mixing raw water and coagulant to enhance coagulation efficiency. ... Doosan Corporation

11/10/16 / #20160326025

Capacitive deionization apparatus and method for manufacturing the same

Provided is a capacitive deionization apparatus and a method for manufacturing the same, which capacitive deionization apparatus is enhanced in the removal efficiency for ionic substances and the fluid throughput, hence applicable to water with high salt concentration such as sea water, etc., and easy to manufacture.. . ... Doosan Corporation

11/10/16 / #20160326016

Multibubble injection type dissolved air flotation water treatment apparatus

Disclosed herein is a multibubble injection type daf (dissolved air flotation) water treatment apparatus which supplies fine bubbles injected through injection of saturated water to a lower area of a separation zone as well as a lower area of a contact zone of a flotation basin, thereby improving removal efficiency of flocs.. . ... Doosan Corporation

11/10/16 / #20160326014

Multi-effect desalination apparatus partially dosing acids into some evaporator and desalination method using the same

The present disclosure relates to a multi-effect desalination apparatus by partially dosing acids into only evaporators corresponding to a relatively high temperature part, while dosing a polymer-based anti-scalant into all the evaporators, to minimize a risk of a scale and corrosion with maximizing a top brine temperature of desalination facility, and a desalination method using the same.. . ... Doosan Corporation

11/03/16 / #20160322583

Organic electroluminescent device

The present disclosure provides an organic electroluminescent device including: an anode; a cathode; and one or more organic material layers interposed between the anode and cathode and selected from the group consisting of a hole injection layer, a hole transporting layer, a light emitting layer, an electron transporting layer, and an electron injection layer, and further including a lifetime enhancement layer (lel) between the light emitting layer and the electron transporting layer.. . ... Doosan Corporation

11/03/16 / #20160320055

Apparatus for collecting large particle ash in thermal power plant

An apparatus for collecting large particles, such as large particle ash generated during combustion in the thermal power plant, includes a main duct installed between an inlet duct extending in a first direction and an outlet duct extending in a second direction, and connected to the inlet duct and the outlet duct, a hopper installed in a lower portion of the main duct to collect large particles, and a flow switching section installed in the main duct in order to increase large particle collection efficiency by switching a flow direction of gas introduced from the inlet duct.. . ... Doosan Corporation

10/27/16 / #20160312444

Control circuit and control method for boom energy regeneration

The present disclosure relates to a control circuit and a control method for boom energy regeneration, and the control circuit for boom energy regeneration includes: a control unit which controls a discharge amount control valve, such that the amount of oil, which is discharged from a head of a boom cylinder, is supplied to a regeneration device or a rod of the boom cylinder through a hydraulic regeneration line, and when the regeneration device has an abnormality, the amount of oil, which is discharged from the head of the boom cylinder, is supplied to the main control valve through a hydraulic discharge line.. . ... Doosan Corporation

10/20/16 / #20160305289

Hybrid power generation system using supercritical co2 cycle

Disclosed herein is a hybrid power generation system using a supercritical co2 cycle, which includes a first working fluid circuit configured to produce electric power by a first working fluid heated in a boiler, and a second working fluid circuit configured to produce electric power by a second working fluid, and the first and second working fluid circuits share the boiler. The hybrid power generation system can remove an air preheater of a thermal power generation system and separate heat exchange units for exhaust gas and air after combustion, so as to utilize the heat exchange units as a heat source and a cooling source in a supercritical co2 cycle. ... Doosan Corporation

10/20/16 / #20160305094

Apparatus and method for selecting screen mode

An exemplary embodiment disclosed in the present specification relates to an apparatus and a method for selecting a screen mode for each operation mode in construction equipment. The apparatus for selecting the screen mode for each operation mode in the construction equipment provides an optimal screen which can determine an operation mode using a boom angle and a turning angle and a driving speed of an upper body, remove a blind spot according to an operation mode, and improve safety.. ... Doosan Corporation

10/20/16 / #20160304328

Forklift

The present disclosure relates to a forklift. The forklift according to the present disclosure is controlled such that when a traveling speed reaches or becomes higher than a predetermined traveling speed, a flow rate of hydraulic oil to be provided to a steering unit is reduced. ... Doosan Corporation

10/13/16 / #20160297967

Thermosetting resin composition having heat resistance and low dielectric loss characteristics, prepreg using same, and copper clad laminate

The present disclosure provides: a thermosetting resin composition comprising: (a) bisphenol m-type epoxy resin; (b) bisphenol m-type cyanate ester resin; (c) polyphenylene ether having two or more vinyl groups at both ends of a branched chain, or oligomers thereof; and (d) a cross-linking curing agent, a prepreg comprising the composition, and a printed circuit board. The printed circuit board simultaneously has an excellent low dielectric loss characteristic, a great moisture-absorbing and heat-resistant characteristic, a low thermal expansion characteristic, thermal stability and the like.. ... Doosan Corporation

10/13/16 / #20160297657

Forklift

The present disclosure relates to a forklift. The forklift according to the present disclosure is controlled such that when a traveling speed reaches or becomes higher than a predetermined traveling speed, pressure of hydraulic oil to be provided to a steering unit is reduced. ... Doosan Corporation

10/06/16 / #20160290729

Heat exchanger unit

A heat exchanger unit includes tube units arranged within a duct unit for heat exchange with combustion gas supplied from a furnace of a thermal power plant, and heat exchanger fins longitudinally formed on outer peripheral surfaces of the tube units and having different thickness and sizes while heat exchange with the combustion gas is performed through the heat exchanger fin.. . ... Doosan Corporation

10/06/16 / #20160290632

Fluidized bed apparatus

Fluidized bed apparatus, comprising a circulating fluidized bed reactor with at least one outlet port at its upper part, wherein said outlet port allows a mixture of gas and solid particles exhausted from the fluidized bed reactor to flow into a number (n) of associated separators for separating solid particles from said gas, a number (n) of means to transfer said separated solid particles from said (n) separators into a number (up to n) of discrete fluidized bed heat exchangers (24.1, 24.2, 24.3), and return means to transport at least part of said solid particles back from said discrete fluidized bed heat exchangers (24) into the circulating fluidized bed reactor, wherein the number (up to n) of discrete fluidized bed heat exchangers (24.1, 24.2, 24.3) are mechanically connected to provide one common fluidized bed heat exchanger (24)mwith water cooled intermediate walls (24i) between adjacent discrete fluidized bed heat exchangers (24.1, 24.2, 24.3).. . ... Doosan Corporation

10/06/16 / #20160290370

Construction equipment hydraulic system and control method therefor

Disclosed are a hydraulic system for construction equipment and a method of controlling the same, and the hydraulic system for construction equipment includes: a plurality of pressure control-type hydraulic pumps driven by an engine provided in construction equipment; an actuator driven by working oil discharged from the hydraulic pump; a closed center-type main control valve provided between the hydraulic pump and the actuator, and bypassing a virtual flow rate; and a controller configured to control the hydraulic pump by receiving the bypassed virtual flow rate from the main control valve.. . ... Doosan Corporation

10/06/16 / #20160290148

Turbine nozzle box

A turbine nozzle box includes an annular outer ring plate, an annular nozzle unit, and an annular inner ring plate. The annular outer ring plate is operable to be disposed in a turbine such that an outer peripheral surface thereof is adjacent to an inner peripheral surface of an inner casing of the turbine. ... Doosan Corporation

09/29/16 / #20160281977

Air distribution nozzle and a fluidized bed reactor

An air distribution nozzle and fluidized bed including said nozzle, the nozzle including a gas inlet pipe and an air distribution cap defining a space inbetween them, first air outlet means allowing air to flow from the gas inlet pipe to the space and second outlet means allowing air to flow from said space to the ambient area, wherein said second outlet means has an outer cross section along the outer surface of the cap that varies in its vertical height along its horizontal extension.. . ... Doosan Corporation

09/22/16 / #20160273195

Method of displaying a dead zone of a construction machine and apparatus for performing the same

In a method of displaying a dead zone of a construction machine, actual images with respect to omnidirectional views of a cabin in the construction machine may be obtained. A virtual image with respect to the dead zone generated by a working tool, which may be connected to the cabin, may be obtained from the actual images. ... Doosan Corporation

09/01/16 / #20160254552

Fuel cell separator and fuel cell stack and reactant gas control method thereof

A fuel cell separator, a fuel cell stack having the fuel cell separator, and a reactant gas control method of the fuel cell stack are provided. That is, even when the fuel cell stack operates under the low load operation condition, a reactant gas is supplied to the reactant gas passages of the fuel cell separator, and thus, the length of the passage can be shortened by 50% as compared with the prior art having only one reactant gas passage. ... Doosan Corporation

08/18/16 / #20160238513

Measuring apparatus for membrane fouling index

A device for measuring the membrane fouling index which can measure the modified fouling index (mfi) and the silt density index (sdi) at the same time and quantify the degree of membrane fouling caused by various kinds of membrane fouling materials, such as particulate materials, colloids, organic matters, and so on, in a short period of time.. . ... Doosan Corporation

08/04/16 / #20160226000

Organic light-emitting device

An organic light-emitting device includes: a first electrode; a second electrode opposite the first electrode; an emission layer between the first electrode and the second electrode; a hole transport region between the first electrode and the emission layer; and an electron transport region between the emission layer and the second electrode, the electron transport region including an electron control layer, wherein the hole transport region includes at least one compound selected from a first compound represented by formula 1 and a second compound represented by formula 2, and the electron control layer includes a third compound represented by formula 3:. . ... Doosan Corporation

07/14/16 / #20160199776

Scrubber tower of a flue gas purification device

A scrubber tower of a flue gas purification device, comprising: a flue gas entrance and a flue gas exit, a liquid entrance and a liquid exit, a contact area for said flue gas and said liquid between said flue gas entrance and said liquid entrance, at least one tray installation positioned within said contact area and across at least 50% of a horizontal extension of said contact area. The tray installation provides a multiplicity of through openings for said flue gas and said liquid respectively, which through openings being adjustable individually, in groups or all together in their respective cross sections.. ... Doosan Corporation

07/07/16 / #20160197361

Fuel cell separator and fuel cell stack and reactant gas control method thereof

A fuel cell separator, a fuel cell stack having the fuel cell separator, and a reactant gas control method of the fuel cell stack are provided. That is, even when the fuel cell stack operates under the low load operation condition, a reactant gas is supplied to the reactant gas passages of the fuel cell separator, and thus, the length of the passage can be shortened by 50% as compared with the prior art having only one reactant gas passage. ... Doosan Corporation

07/07/16 / #20160194028

Device for controlling steering wheel and method for controlling steering wheel using same

A device for controlling a steering wheel and a method for controlling a steering wheel using the same that includes: a detecting bar which is rotated in conjunction with a steering shaft of an industrial vehicle's steering wheel; a sensor at one side of the detecting bar so as to detect a steering angle of the steering wheel by means of the detecting bar; and a controller which controls the steering wheel based on a sensing signal of the sensor so as to position the steering wheel in a neutral position during a time when electric power is applied to the industrial vehicle and the industrial vehicle is initialized. When an operator turns on a power source of the electric forklift, the steering wheel is positioned in the neutral position to enable an operator to immediately drive the electric forklift without confirming a position of the steering wheel.. ... Doosan Corporation

06/09/16 / #20160161936

Method for setting feed rate of rotating cutting tool in real time and control device

Disclosed are a method for setting a feed rate of a rotating cutting tool in real time and a device for controlling a feed rate of a rotating cutting tool in real time. The method includes: a vibration data collecting operation (s20) of collecting vibration information from a sensor installed in a machine tool (100); a chatter vibration trend diagram deducing operation (s30) of deducing a chatter vibration trend diagram (g) by simplifying an increase and a decrease of chatter vibration based on the collected vibration data; a chatter vibration trend determining operation (s40) of determining whether an inclination of the chatter vibration trend diagram (g) is increased or decreased; and tool feed rate adjusting operations (s51 and s52) of adjusting a feed rate of the tool to be decreased when the inclination of the chatter vibration trend diagram (g) is increased.. ... Doosan Corporation

05/26/16 / #20160150644

Resin composition and laminate for printed circuit board comprising same

The present disclosure relates to a resin composition, which serves as an insulation layer of a laminate for a printed circuit board while exhibiting adhesiveness to a metal base layer, the resin composition including: a rubber-modified epoxy resin; an epoxy resin; an inorganic filler; and a curing agent.. . ... Doosan Corporation

05/26/16 / #20160146101

Gas turbine with plurality of tie rods and method of assembling the same

Disclosed herein is a gas turbine with a plurality of tie rods. The gas turbine includes a compressor section having a plurality of compressor-side rotor disks, a turbine section having a plurality of turbine-side rotor disks arranged downstream of the compressor-side rotor disks, a first tie rod penetrating central portions of the rotor disks provided in the compressor section to press the compressor-side rotor disks against each other, a plurality of second tie rods penetrating vicinities of edges of the rotor disks provided in the turbine section to press the turbine-side rotor disks against each other, and a torque transfer member coupled to the first and second tie rods so as to transfer rotational torque generated by the turbine section to the compressor section.. ... Doosan Corporation

05/12/16 / #20160131000

Selective catalytic reduction and catalytic regeneration system

A selective catalytic reduction and catalytic regeneration system includes: a main exhaust flow path; a reactor which is installed on the main exhaust flow path; a bypass exhaust flow path which branches off from the main exhaust flow path, and bypasses the reactor; an ammonia injection unit, which injects ammonia to the exhaust gas which is to flow into the reactor; a hydrolysis chamber, which produces ammonia to be supplied to the ammonia injection unit; a branch flow path, which branches off from the main exhaust flow path at a front side of the reactor; a recirculation flow path, which branches off from the main exhaust flow path at a rear side of the reactor, and merges with the branch flow path; and a multifunctional flow path, which connects the hydrolysis chamber with a point where the branch flow path and the recirculation flow path merge together.. . ... Doosan Corporation

05/12/16 / #20160129397

Reducing agent pyrolysis system for selective catalytic reduction apparatus

A reducing agent pyrolysis system for a selective catalytic reduction apparatus includes an elbow duct that is installed on an exhaust duct at a front end of a reactor, allows exhaust gas to flow into the elbow duct, and allows the inflow exhaust gas to be discharged toward the reactor. An inner pipe unit is disposed in the elbow duct, and allows a part of the exhaust gas to flow into and be discharged from the inner pipe unit. ... Doosan Corporation

05/05/16 / #20160124419

Method and apparatus for compensating thermal displacement of machine tool

Disclosed are a method and an apparatus for compensating thermal displacement of a machine tool, the apparatus including: a compensation quantity calculating unit configured to calculate a compensation quantity by using temperature data and a predetermined compensation parameter; a smoothing filter configured to exponentially smooth the calculated compensation quantity; a scaling unit configured to scale the exponentially smoothed compensation quantity; a time-dispersion compensating unit configured to calculate a final compensation quantity by time-dispersion compensation for the scaled compensation quantity according to a time-dispersion compensating period; and a control unit configured to compensate each axis of equipment according to the final compensation quantity, and adjusts the time-dispersion compensating period of the time-dispersion compensating unit according to an error absolute value representing a difference between an input value and an output value of the time-dispersion compensating unit.. . ... Doosan Corporation

04/07/16 / #20160097313

Engine control method for maintaining performance of oxidation catalyst

In an engine control method for maintaining performance of oxidation catalyst, fuel of a compressed natural gas engine under a lean-burn condition with an air-fuel equivalence ratio less than or equal to 1 is burned. Activation of the oxidation catalyst for purifying an exhaust gas of the engine is determined. ... Doosan Corporation

03/03/16 / #20160061236

Method for controlling hydraulic system of construction machinery

The present disclosure relates to a method for controlling a hydraulic system of construction machinery. The method for controlling the hydraulic system of construction machinery according to the present disclosure includes an engine speed prediction step, in which a variable rated engine speed, which varies within a range larger than a fixed rated engine speed and smaller than a high idle engine speed for the fixed rated engine speed and a virtual engine speed, which is to be input later, are predicted to output a virtual engine speed value predicted before an actual engine speed is input. ... Doosan Corporation

02/25/16 / #20160053778

Apparatus and method for controlling spool displacement of construction machine

Provided are an apparatus and a method for controlling spool displacement of a construction machine, which are capable of improving regeneration efficiency of the construction machine, and improving a fuel efficiency characteristic of the construction machine by reducing pressure loss in the operating mode by adjusting the quantity of spool displacement in a regeneration mode when a current pressure of a main pump is less than a predetermined operating pressure, and determining whether the construction machine is in an operating mode or the regeneration mode in real time according to an operating angle of a joystick and the current pressure of the main pump when the current pressure of the main pump is greater than or equal to the predetermined operating pressure to variably change the quantity of spool displacement in the operating mode.. . ... Doosan Corporation

02/18/16 / #20160047475

Brush seal assembly

A brush seal assembly may include: a packing body configured to be positioned between a rotating body and a fixing body and provided with an insertion groove; a brush seal part configured to include a brush extending toward the rotating body in a state in which one end of the brush seal part is inserted into the insertion groove and a support member supporting the brush; a thermal expansion member configured to adhere to a side of the support member and be thermally expanded in a circumferential direction of the packing body; and a fixing member configured to be fitted in the insertion groove to face the thermal expansion member to simultaneously fix the brush seal part in the circumferential direction and a radial direction of the packing body.. . ... Doosan Corporation

02/18/16 / #20160047399

Method, device, and system for controlling hydraulic pump of construction machine

The present disclosure relates to a method, a device, and a system for controlling a hydraulic pump of a construction machine, the system comprising: an engine; an engine control unit configured to control the engine by using engine limit torque information and current engine torque information of the engine; a hydraulic pump operated by power supplied from the engine; at least one actuator driven by a hydraulic pressure discharged from the hydraulic pump; and a hydraulic pump control device configured to control a limited swash plate angle of the hydraulic pump by using a torque of the hydraulic pump and the engine limit torque information received from the engine control unit.. . ... Doosan Corporation

02/18/16 / #20160047398

Apparatus for controlling hydraulic pump for construction machine

The present disclosure relates to an apparatus for controlling a hydraulic pump for a construction machine. The apparatus for controlling the hydraulic pump for the construction machine according to the present disclosure includes: a hydraulic pump control device configured to generate first and second pump commands for controlling first and second hydraulic pumps so that the first and second hydraulic pumps generate pump torque corresponding to a request value; and a torque controller configured to generate first and second corrected pump commands, which are the corrected first and second pump commands, by a torque inclination map generated by reflecting a dynamic characteristic of an engine, and to provide the first and second corrected pump commands to the first and second hydraulic pumps.. ... Doosan Corporation

02/18/16 / #20160046360

Ballast water treatment apparatus and method for ship using forward osmosis process

A ballast water treatment apparatus for a ship includes a water collection part for collecting sea water, a forward osmosis process unit for producing ballast water and treatment water obtained by desalinating the sea water collected through the water collection part, and a ballast water tank for storing the ballast water produced by the forward osmosis process unit. Since the sea water is treated using a forward osmosis process, fresh water required within the ship can be supplied and the treated sea water can be used as ballast water. ... Doosan Corporation

02/11/16 / #20160043418

Fuel cell having multiple duplicate anode substrate layers

The fuel cell (100) includes an oxidant flow plate (212), an adjacent cathode substrate layer (216) having a cathode catalyst (222), a matrix (224) for retaining a liquid electrolyte (230), wherein the matrix (224) is secured adjacent and between the cathode catalyst (222) and an anode catalyst (232). A first anode substrate (102) is secured adjacent the anode catalyst (232), and at least a second duplicate anode substrate layer (108) is secured adjacent the first anode substrate layer (102) for providing greater pore volume for storage of the liquid electrolyte (230) and to limit obstruction of the pore volume of the anode substrates (102, 108). ... Doosan Corporation

02/11/16 / #20160040689

Device and method for controlling hydraulic pump in construction machine

Disclosed are a device and a method for controlling a hydraulic pump in a construction machine, the method including: checking whether a dynamic characteristic of an engine deviates from a predetermined permissible range when a load is applied to the hydraulic pump and a pump load reaches pump torque required by the hydraulic pump; when the dynamic characteristic of the engine deviates from the predetermined permissible range, applying a pump load to the hydraulic pump so as to increase the pump torque to predetermined torque with a predetermined change rate; collecting information which is generated when the pump load is applied; generating a new torque change rate map by generating a torque change rate for each load section based on the information collected in the information collecting step; and updating an existing torque change rate map to the new torque change rate map generated in the map data generating step.. . ... Doosan Corporation

02/11/16 / #20160040610

Apparatus for controlling construction equipment engine and control method therefor

Disclosed are an apparatus and a method for controlling an engine of construction equipment, the apparatus including: a lever for generating a first signal when a state of the construction equipment is switched to an operation state or a neutral state; and an auto idle switch for generating a second signal when an auto engine idle mode is on; in which when a state of the lever is switched to a neutral state in an on state of the second signal, an engine speed is reduced to a step engine speed, when a first speed reducing step is maintained for a predetermined time, the engine speed is further reduced to an idle engine speed, and when a state of the lever is switched to an operation state while the second speed reducing step is maintained, the engine speed returned to the step engine speed.. . ... Doosan Corporation

02/04/16 / #20160036079

Steam boiler for a steam reformer

Embodiments are disclosed that relate to a compact steam boiler which may provide steam to a steam reformer in a fuel cell system. For example, one disclosed embodiment provides a steam boiler including an outer shell and a first inner tube and a second inner tube within the outer shell, the first and second inner tubes spaced away from one another. ... Doosan Corporation

02/04/16 / #20160035445

Treatment apparatus and method for waste steam generator, and installation method of treatment apparatus for waste steam generator

Disclosed herein are a treatment apparatus and method for a waste steam generator, and an installation method of a treatment apparatus for a waste steam generator. The treatment apparatus includes a cutting part for cutting a body of a waste steam generator, a driving part for driving the cutting part, and a support frame for supporting the cutting part and the driving part, wherein the support frame is coupled to an outer peripheral surface of the body of the waste steam generator in a divided state, and the cutting part is driven and cuts the body in a state in which the support frame is coupled to the outer peripheral surface of the body. ... Doosan Corporation

02/04/16 / #20160035443

Treatment apparatus for waste steam generator and installation method thereof

A treatment apparatus includes a cutting part for cutting a lower head of a waste steam generator, a driving part for driving the cutting part, and a support frame for supporting the cutting part and the driving part, wherein the support frame is coupled to an outer peripheral surface of the lower head in a divided state, and the cutting part is driven and cuts the lower head in a state in which the support frame is coupled to the outer peripheral surface of the lower head. Since the support frame is divided into a plurality of portions and a dedicated installation jig is provided, the treatment apparatus is easily moved and installed and installation time thereof can be shortened, and an exposure time of a worker can be minimized.. ... Doosan Corporation

02/04/16 / #20160034856

Wind power plant management system and method thereof

Provided is a wind power generation management apparatus including: a collection unit configured to collect first data generated in a wind power plant; a fault occurrence prediction unit configured to compare the collected first data with a predefined normal state model, to create a second data indicating a state of the wind power plant based on a result of the comparison, and to predict occurrence of a fault in the wind power plant according to the second data; and a maintenance plan establishment unit configured to estimate an operating time corresponding to a time from a start of the wind power plant until the fault occurs, and to generate a maintenance plan which can be performed for the fault during the estimated operating time.. . ... Doosan Corporation

02/04/16 / #20160032945

Hydraulic system for construction machine

The present disclosure relates to a hydraulic system for a construction machine, and more particularly, to a hydraulic system for a construction machine including a plurality of actuators, in which each of the actuators includes a pump/motor, is operated under a control of a corresponding pump/motor, and stores working oil in an accumulator or receives the working oil supplemented from the accumulator in accordance with a difference between a flow rate entering the actuator and a flow rate discharged from the actuator.. . ... Doosan Corporation

02/04/16 / #20160032745

Turbine including packing device and method of assembling the same, and sealing assembly

A turbine includes a rotor shaft having a plurality of rotating blades mounted on the rotor shaft, a bearing assembly rotatably supporting the rotor shaft, a casing forming a passage of a fluid and to include a space in which the rotating blades are disposed so that thermal energy of the fluid is converted into mechanical energy by rotation, a foundation fixedly supporting the bearing assembly, and a packing device installed in the rotor shaft for sealing between the casing and the rotor shaft and supported by the foundation. The casing comprises a connection unit extended toward the packing device and fixed to the casing so that a location of the connection unit is relatively changed with respect to the packing device. ... Doosan Corporation

01/28/16 / #20160025551

Intelligent noise monitoring device and noise monitoring method using the same

An intelligent noise monitoring device includes a self-flying moving module, a noise measurement module equipped in the moving module to measure noise of a target to be detected, a control module configured to control the moving module and the noise measurement module; and a communication module configured to communicate with a ground control center, wherein the intelligent noise monitoring device flies to a location to be detected to measure the noise of the location to be detected so as to determine whether or not the measured noise is in an abnormal state.. . ... Doosan Corporation

01/14/16 / #20160010513

Hybrid power generation system and method using supercritical co2 cycle

A hybrid power generation system using a supercritical co2 cycle includes a steam power generation unit including a plurality of turbines driven with steam heated using heat generated by a boiler to produce electric power, and a supercritical co2 power generation unit including an s—co2 heater for heating a supercritical co2 fluid, a turbine driven by the supercritical co2 fluid, a precooler for lowering a temperature of the supercritical co2 fluid passing through the turbine, and a main compressor for pressurizing the supercritical co2 fluid, so as to produce electric power. The steam power generation unit and the supercritical co2 power generation unit share the boiler. ... Doosan Corporation

01/07/16 / #20160006037

Liquid-electrolyte fuel-cell electrodes with soluble fluoropolymer coating and method for making same

An electrode for a phosphoric acid fuel cell includes a phosphoric acid electrode; catalyst particles on the phosphoric acid electrode; and a fluoropolymer on the catalyst particles. Methods for making such electrodes using soluble fluoropolymer are also provided.. ... Doosan Corporation

01/07/16 / #20160002881

Apparatus and method for controlling work machine of work vehicle

An exemplary embodiment suggested in the present disclosure relates to an apparatus and a method of controlling a work machine of a work vehicle. The apparatus for controlling a work machine of a work vehicle suggested in the present disclosure measures a speed of a work vehicle, converts an input signal of a joystick into an output current for controlling a proportional valve (p/v) for operating a work machine (for example, a boom and a bucket), compares the speed of the work vehicle with a reference speed, and advances or delays an end time point or an operation time point of the work machine, thereby controlling an impact applied to the work vehicle.. ... Doosan Corporation








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