EP2435730A2 - Method for operating a drive train - Google Patents
Method for operating a drive trainInfo
- Publication number
- EP2435730A2 EP2435730A2 EP10721151A EP10721151A EP2435730A2 EP 2435730 A2 EP2435730 A2 EP 2435730A2 EP 10721151 A EP10721151 A EP 10721151A EP 10721151 A EP10721151 A EP 10721151A EP 2435730 A2 EP2435730 A2 EP 2435730A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- electric machine
- hybrid drive
- drive
- retarder
- braking torque
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000005540 biological transmission Effects 0.000 claims abstract description 33
- 238000002485 combustion reaction Methods 0.000 claims abstract description 17
- 230000001419 dependent effect Effects 0.000 claims abstract description 14
- 239000010720 hydraulic oil Substances 0.000 claims description 25
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000004146 energy storage Methods 0.000 claims description 4
- 230000007935 neutral effect Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 abstract 2
- 238000010168 coupling process Methods 0.000 abstract 2
- 238000005859 coupling reaction Methods 0.000 abstract 2
- 239000003921 oil Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0412—Cooling or heating; Control of temperature
- F16H57/0413—Controlled cooling or heating of lubricant; Temperature control therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/48—Parallel type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T10/00—Control or regulation for continuous braking making use of fluid or powdered medium, e.g. for use when descending a long slope
- B60T10/02—Control or regulation for continuous braking making use of fluid or powdered medium, e.g. for use when descending a long slope with hydrodynamic brake
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/18—Conjoint control of vehicle sub-units of different type or different function including control of braking systems
- B60W10/196—Conjoint control of vehicle sub-units of different type or different function including control of braking systems acting within the driveline, e.g. retarders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/192—Mitigating problems related to power-up or power-down of the driveline, e.g. start-up of a cold engine
- B60W30/194—Mitigating problems related to power-up or power-down of the driveline, e.g. start-up of a cold engine related to low temperature conditions, e.g. high viscosity of hydraulic fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D57/00—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders
- F16D57/04—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders with blades causing a directed flow, e.g. Föttinger type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/423—Torque
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/08—Electric propulsion units
- B60W2710/083—Torque
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Definitions
- the invention relates to a method for operating a drive train of a motor vehicle.
- the main components of a powertrain are a prime mover and a transmission.
- the transmission converts speeds and torques and thus provides a traction power supply of the drive unit at a power take-off of the drive train ready.
- the present invention relates to a method for operating a drive train with a drive unit configured as a hybrid drive, wherein a clutch is connected between the internal combustion engine of the hybrid drive and the electric machine thereof.
- a drive train to be operated in the context of the method according to the invention furthermore has a primary retarder, wherein a primary retarder is connected between the electric machine of the hybrid drive and a transmission input of the transmission, and a secondary retarder is interposed between a transmission output of the transmission and the output of the drive train is.
- the present invention for operating a powertrain now relates to such details, by means of which the hydraulic oil of such a drive train can be heated quickly to a minimum temperature.
- a method for heating hydraulic oil in a transmission oil circuit is known in which for the heating of the oil in the oil circuit, a power loss is generated, the heat is used to heat the hydraulic oil.
- a circulatory system of a retarder is known, by means of which heated oil can be used directly after the retarder to heat transmission oil directly.
- the present invention is based on the problem to provide a novel method for operating a drive train of a motor vehicle.
- This problem is solved according to a first aspect of the invention by a method for operating a drive train of a motor vehicle according to claim 1. Thereafter, a braking torque is provided for heating hydraulic oil with open, between the engine of the hybrid drive and the electric machine of the hybrid drive coupled clutch and a gear engaged in the transmission via the Primärretarder or Sekundärretarder in the drive train, the electric machine of the hybrid drive operated in such a torque-controlled in that it provides, in sum, a desired torque dependent on a driving request and the braking torque of the primary retarder or the secondary retarder.
- this problem is solved by a method for operating a drive train of a motor vehicle according to claim 4.
- a braking torque is provided for heating hydraulic oil when the clutch is switched between the internal combustion engine of the hybrid drive and the electric machine of the hybrid drive and when the gearbox engages in a neutral position of the transmission via the primary retarder in the drive train, wherein the electric machine of the hybrid drive is operated in a speed controlled manner, that it works against the braking torque of the primary retarder.
- the inventive method according to the first aspect of the invention can be used both in a drive train with a primary retarder and in a drive train with a secondary retarder.
- inventive method according to the second aspect of the invention can be used exclusively in a drive train with a primary retarder.
- the electric machine of the hybrid drive operates against a braking torque provided by the respective retarder. Accordingly, electrical energy stored in an energy accumulator of the hybrid drive is converted into heat to heat hydraulic oil. For heating the hydraulic oil, no additional components, such as heating rods, are required.
- hydraulic oil can be effectively heated, which improves the efficiency of the transmission and other components of the drive train to be supplied with hydraulic oil.
- a cooling circuit of the internal combustion engine of the hybrid drive can also be warmed up via a heat exchanger so as to operate, in particular start, the internal combustion engine, in particular with a higher efficiency and lower emissions.
- FIG. 1 shows a first driveline scheme of a motor vehicle, in which the method according to the invention can be used
- FIG. 2 shows a second drive train diagram of a motor vehicle in which the method according to the invention can be used
- FIG. Fig. 3 is a first block diagram illustrating a first aspect of the invention.
- FIG. 4 shows a second block diagram to illustrate a second aspect of the invention.
- FIGS. 1 and 2 show highly schematic possible drive trains, in which the inventive method can be used.
- FIGS. 1 and 2 each show drive trains with a hybrid drive, wherein a hybrid drive comprises an internal combustion engine 1 and an electric machine 2.
- a transmission 4 is connected, wherein the transmission 4 provides a traction power supply of the hybrid drive to the output 3.
- a clutch 5 is connected, which, when the internal combustion engine 1 is decoupled from the output 3, is opened.
- a retarder 6 is connected between the electric machine 2 and an input of the transmission 4, which is also referred to as a primary retarder.
- a retarder 7 is connected between an output of the transmission 4 and the output 3, which is also referred to as secondary retarder.
- the drive trains of FIGS. 1 and 2 are each parallel hybrid drive trains.
- the drive trains have in addition to the assemblies shown in FIGS. 1 and 2 via an electrical energy storage and control-side modules.
- the present invention now relates to a method for operating such drive trains in order to effectively heat hydraulic oil, which is required, for example, in the transmission 4 and / or in the internal combustion engine 1.
- hydraulic oil which is required in particular in the transmission 4 of the drive train, is heated such that when the clutch 5 is switched between the internal combustion engine 1 of the hybrid drive and the electric machine 2 and if the transmission is engaged in the transmission 4 Primary retarder 6 or the secondary retarder 7 in the drive train a braking torque is provided, the electric machine 2 of the hybrid drive is operated torque controlled so that the sum of a sum of a driver-dependent dependent torque and the braking torque of the respective retarder 6 or 7 provides.
- the desired torque dependent on the driver's request is then provided on the output 3 and, in addition, the braking torque provided by the respective retarder 6 or 7 in the drive train is compensated via the electric machine 2 of the hybrid drive.
- the resulting heat is used to heat the hydraulic oil.
- the above method can be used both in a drive train with a primary retarder 6 and in a drive train with a secondary retarder 7, wherein, as also already mentioned, the electric machine 2 is operated torque-controlled, wherein the torque-controlled operation of the electric machine 2 of the hybrid drive in detail from Fig. 3 shows.
- FIG 3 shows a control circuit for the torque-controlled operation of the electric machine 2 of the hybrid drive, wherein a manipulated variable Y STELL is generated by means of a torque controller 8 for the electric machine 2 of the hybrid drive, which is the input of the electric machine 2. is performed to operate the electric machine 2 such that an actual torque provided by the same M
- the driver-dependent desired torque M F w is provided by a driving strategy function 9.
- the braking torque M RET provided by the respective retarder 6 or 7 in the drive train is provided by a braking torque strategy function 10.
- the braking torque of the respective retarder 6 or 7 is determined by the braking torque strategy function 10 as a function of a hydraulic oil temperature or an outside temperature and as a function of the electrical energy available in the electrical energy store of the drive train. Furthermore, the braking torque of the respective retarder 6 or 7 is determined in such a way that the same and the desired torque dependent on the driver's request do not exceed in total a maximum torque that can be maximally provided by the electric machine 2.
- hydraulic oil can also be heated by the fact that when the engine 1 of the hybrid drive and the electric machine 2 thereof are switched open Clutch 5 and at a neutral position in the transmission 4 via the primary retarder 6 in the drive Str briefly a braking torque is provided, in which case the electric machine 2 of the hybrid drive is operated speed controlled, so that the same operates against the braking torque of the primary retarder 6.
- the electric machine 2 of the hybrid drive then preferably provides a moment, which corresponds in magnitude to the braking torque provided by the primary retarder 6, whereby the heat generated here is in turn used to heat the hydraulic oil.
- Fig. 4 illustrates the speed-controlled operation of the electric machine 2 according to the second aspect of the invention with reference to a block diagram, wherein in a speed control of FIG. 4, the electric machine 2 of the hybrid drive by means of a speed controller 1 1 is operated speed controlled.
- the target rotation speed ⁇ SOLL for the speed control of Fig. 4 is determined by means of a setpoint input 12 in response to a hydraulic oil temperature or an outdoor temperature and a function of an available in an electrical energy storage device of the powertrain electrical energy.
- the braking torque to be provided by the primary retarder 6 in the drive train, against which the electric machine 2 of the hybrid drive is to operate, is likewise determined as a function of the hydraulic oil temperature or the outside temperature and the electrical energy available in the energy store, the braking torque of the primary retarder 6 being such it is determined that the same is not greater than a maximum torque that can be provided by the electric machine 2.
- a is dependent on the braking torque of the primary retarder 6
- the pilot component X V s is thereby provided by means of a pilot control input 13.
- Both methods according to the invention have in common that an electric machine 2 of a hybrid drive operates against a braking torque provided by a retarder in the drive train so as to generate heat for heating hydraulic oil, namely by converting electrical energy into heat.
- hydraulic oil for a transmission 4 is preferably heated.
- Via a heat exchanger it is also possible to heat a cooling circuit of the internal combustion engine 1.
- the invention is used when the hydraulic oil temperature or the outside temperature is less than a threshold. Above this limit, a drive train can be operated in a conventional manner, since then a heating of the hydraulic oil is not required.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Hybrid Electric Vehicles (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009026432A DE102009026432A1 (en) | 2009-05-25 | 2009-05-25 | Method for operating a drive train |
PCT/EP2010/056910 WO2010136366A2 (en) | 2009-05-25 | 2010-05-19 | Method for operating a drive train |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2435730A2 true EP2435730A2 (en) | 2012-04-04 |
Family
ID=43012602
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10721151A Withdrawn EP2435730A2 (en) | 2009-05-25 | 2010-05-19 | Method for operating a drive train |
Country Status (4)
Country | Link |
---|---|
US (1) | US8663064B2 (en) |
EP (1) | EP2435730A2 (en) |
DE (1) | DE102009026432A1 (en) |
WO (1) | WO2010136366A2 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010029386A1 (en) * | 2010-05-27 | 2011-12-01 | Zf Friedrichshafen Ag | Method for operating a drive train |
DE102012206157A1 (en) * | 2012-04-16 | 2013-10-17 | Zf Friedrichshafen Ag | Control device of a hybrid vehicle and method for operating the same |
DE102012216948A1 (en) * | 2012-09-21 | 2014-03-27 | Zf Friedrichshafen Ag | Method for operating hybrid power train of vehicle, involves performing the reduction of the generated electric power to increase the heat energy which is supplied to vehicle interior and/or components |
JP2015131512A (en) * | 2014-01-09 | 2015-07-23 | トヨタ自動車株式会社 | Vehicle control apparatus |
SE541864C2 (en) * | 2017-03-08 | 2020-01-02 | Ka Group Ag | System for an electrical drive comprising a hydraulic auxiliary brake system |
JP7383405B2 (en) * | 2019-06-07 | 2023-11-20 | 日野自動車株式会社 | Brake control device |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3301560C1 (en) | 1983-01-19 | 1984-04-05 | Daimler-Benz Ag, 7000 Stuttgart | Control of the heating power of a hydrodynamic brake |
SE507435C2 (en) * | 1992-06-22 | 1998-06-08 | Scania Cv Ab | Procedure and arrangement for accelerating the heating of the vehicle engine in a retarded vehicle |
DE4446288A1 (en) * | 1994-12-23 | 1995-06-29 | Voith Turbo Kg | Power unit for vehicle |
DE19934621B4 (en) | 1999-07-23 | 2008-10-16 | Zf Friedrichshafen Ag | Circulatory system of a retarder |
JP3700776B2 (en) * | 2001-12-07 | 2005-09-28 | アイシン・エィ・ダブリュ株式会社 | Vehicle drive control device |
DE10342893A1 (en) | 2003-09-17 | 2005-05-25 | Zf Friedrichshafen Ag | Process to pre-heat automotive gearbox components circulates engine oil to the gearbox during the cold start phase |
ITMI20040128A1 (en) | 2004-01-29 | 2004-04-29 | Astra Veicoli Ind S P A | PROCEDURE AND DEVICE FOR THE MANAGEMENT OF THE COLD HEATING PHASE OF A VEHICLE BY PILOTING A HYDRAULIC SLIDER |
DE102004057125A1 (en) | 2004-11-26 | 2006-06-01 | Zf Friedrichshafen Ag | Cooling circuit for gearboxes with integrated retarder and separate oil budget for gearboxes and retarders |
DE102006012847A1 (en) | 2006-03-21 | 2007-09-27 | Daimlerchrysler Ag | Internal combustion engine`s cooling circuit heating method for e.g. passenger car, involves automatically connecting retarder with engine using drive for supplying heat energy in warm-up phase of engine based on operating parameters |
JP4512075B2 (en) * | 2006-10-11 | 2010-07-28 | トヨタ自動車株式会社 | POWER OUTPUT DEVICE, ITS CONTROL METHOD, AND VEHICLE |
JP2009023398A (en) * | 2007-07-17 | 2009-02-05 | Toyota Motor Corp | Control device for power transmission device for hybrid vehicle |
DE102007050774A1 (en) * | 2007-10-24 | 2009-04-30 | Zf Friedrichshafen Ag | Method for operating a drive train |
KR101241210B1 (en) * | 2010-12-07 | 2013-03-13 | 기아자동차주식회사 | Oil pump controlling systen of hybrid vehicle and method thereof |
-
2009
- 2009-05-25 DE DE102009026432A patent/DE102009026432A1/en not_active Withdrawn
-
2010
- 2010-05-19 US US13/266,624 patent/US8663064B2/en not_active Expired - Fee Related
- 2010-05-19 WO PCT/EP2010/056910 patent/WO2010136366A2/en active Application Filing
- 2010-05-19 EP EP10721151A patent/EP2435730A2/en not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO2010136366A2 * |
Also Published As
Publication number | Publication date |
---|---|
WO2010136366A3 (en) | 2011-03-17 |
WO2010136366A2 (en) | 2010-12-02 |
US8663064B2 (en) | 2014-03-04 |
DE102009026432A1 (en) | 2010-12-09 |
US20120058857A1 (en) | 2012-03-08 |
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