EP2841290A1 - Hydraulic hybrid - Google Patents
Hydraulic hybridInfo
- Publication number
- EP2841290A1 EP2841290A1 EP13709764.8A EP13709764A EP2841290A1 EP 2841290 A1 EP2841290 A1 EP 2841290A1 EP 13709764 A EP13709764 A EP 13709764A EP 2841290 A1 EP2841290 A1 EP 2841290A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- engine
- hydraulic
- hybrid system
- valve
- pressure sensor
- 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- Withdrawn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
- 238000002485 combustion reaction Methods 0.000 claims abstract description 19
- 238000002347 injection Methods 0.000 claims abstract description 4
- 239000007924 injection Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 5
- 230000033228 biological regulation Effects 0.000 abstract 1
- 230000014759 maintenance of location Effects 0.000 abstract 1
- 230000006870 function Effects 0.000 description 9
- 239000000446 fuel Substances 0.000 description 8
- 239000007858 starting material Substances 0.000 description 6
- 230000006399 behavior Effects 0.000 description 5
- 239000002826 coolant Substances 0.000 description 5
- 238000007599 discharging Methods 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 240000000581 Triticum monococcum Species 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Classifications
-
- 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
- B60K6/08—Prime-movers comprising combustion engines and mechanical or fluid energy storing means
- B60K6/12—Prime-movers comprising combustion engines and mechanical or fluid energy storing means by means of a chargeable fluidic accumulator
-
- 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
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
-
- 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
- B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
- B60W10/101—Infinitely variable gearings
- B60W10/103—Infinitely variable gearings of fluid type
-
- 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
- B60W10/24—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means
-
- 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
- B60W10/30—Conjoint control of vehicle sub-units of different type or different function including control of auxiliary equipment, e.g. air-conditioning compressors or oil pumps
-
- 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
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
- B60W20/15—Control strategies specially adapted for achieving a particular effect
- B60W20/19—Control strategies specially adapted for achieving a particular effect for achieving enhanced acceleration
-
- 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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
- F16H61/4078—Fluid exchange between hydrostatic circuits and external sources or consumers
- F16H61/4096—Fluid exchange between hydrostatic circuits and external sources or consumers with pressure accumulators
-
- 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
- B60K6/08—Prime-movers comprising combustion engines and mechanical or fluid energy storing means
- B60K6/12—Prime-movers comprising combustion engines and mechanical or fluid energy storing means by means of a chargeable fluidic accumulator
- B60K2006/126—Prime-movers comprising combustion engines and mechanical or fluid energy storing means by means of a chargeable fluidic accumulator the hydraulic accumulator starts the engine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/40—Special vehicles
- B60Y2200/41—Construction vehicles, e.g. graders, excavators
-
- 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
Definitions
- Hydrostatic drive machines consist of an internal combustion engine, several hydraulic pumps, lines, valves, controls, motors and hydraulic cylinders. Such systems are for. B. known from DE 1020 09 824 B4. The excess energy is stored in an electric battery.
- the object of the present invention is to obviate the above drawbacks and to provide a hybrid system which efficiently bypasses existing inventories, particularly with regard to optimizing the operating points of the engine with particular regard to fuel consumption, dynamic engine behavior, noise level and wear.
- the object is achieved by a hybrid system according to claim 1 or by a method according to claim 10.
- the excess energy or engine power is stored in lean load phases of the internal combustion engine for dispensing or increasing the available system power, in phases with high or excessive power requirements in hydraulic accumulators.
- the optimization consists in the fact that for a short time more power is available in the system than the combustion engine can deliver at the current operating point. Therefore, the system is more powerful and the behavior is more dynamic under load changes.
- the braking power of the system or of the engine can be increased, and the engine's towing can be avoided or reduced. The occurring maximum speeds on the internal combustion engine can be significantly reduced. In low load phases, the free engine power is then available for the storage charging.
- the system consists of an internal combustion engine with built-in or integrated hydraulic pumps for working and / or driving circuit, an engine control unit for electronic engine and injection control, a hydraulic control unit for controlling the hydraulic consumers, hydraulic control modules, actuators and valves, a pressure-holding valve, at least one reversing valve and at least one hydraulic pressure accumulator.
- the engine control unit records engine-specific measured values. These include the coolant temperature, the charge air pressure, the load torque, the injection quantity, the engine speed, the rail pressure, the fuel pressure and the speed setpoint. On the basis of these measured values, manipulated variables for motor control are determined in the control unit with the help of parameters, characteristic curves and maps. The respective operating point of the motor is determined and set in this way.
- the engine control unit has further measured values such as the hydraulic pressure in the hydraulic accumulator, the hydraulic pressure and temperature of the working circuit, the hydraulic pressure and temperature of the traction drive, and the swivel angle of the working and driving pumps. From the hydraulic control unit information about the state, such. As the operating point, the respective hydraulic components and the requested load supplied by the components to the engine control unit. In the engine control unit, the control of the charging and discharging processes of the pressure accumulator takes place as required in dependence on the above-mentioned data.
- the charging (Loading, Fig. 2) of the memory is initiated by opening the valve A in the working group and / or the valve B in the driving circle.
- the control is effected in dependence on the ratio of the hydraulic pressures to Pspeise P Sp Eicher of the torques M verrecichegbar st to M) and in function of the engine temperature T K, and the hydraulic temperature T Sp else. as shown in Figure 2.
- the engine control unit checks on the basis of further characteristic values whether a loading (FIG. 2) makes sense.
- the loading may be activated or deactivated by the engine control unit when the engine is in an unfavorable operating point, e.g. B. with regard to the fuel consumption, the emission behavior, the boost pressure, the noise level and the measured values and information of the hydraulic control unit is located and can be achieved by switching the function of a more suitable operating point.
- an unfavorable operating point e.g. B. with regard to the fuel consumption, the emission behavior, the boost pressure, the noise level and the measured values and information of the hydraulic control unit is located and can be achieved by switching the function of a more suitable operating point.
- the loading (FIG. 2) can also be steplessly regulated via a control valve in order to realize a gentler switching on / off of the engine load.
- the discharge (Boost, Fig. 3) of the memory is initiated by opening the valve A in the working group and / or the valve B in the circle.
- the control is effected in dependence on the ratio of the hydraulic pressures to Pspeise P Sp Eicher of the torques M F O ver gbar to M
- the engine control unit checks on the basis of further characteristic values whether a boost (FIG. 3) makes sense.
- valve A and / or valve B is opened until the accumulator is discharged, or one of the conditions is no longer fulfilled.
- ie M V available f ⁇ M
- St (f safety factor, eg 0.9)
- valve A and / or valve B is opened until the accumulator is discharged, or one of the requirements is no longer met.
- valve A and / or valve B is opened until the memory is discharged, or one of the requirements is no longer met.
- valve A and / or valve B At high pressure drop of the feed pressure by fast load switching in the hydraulic circuit, d. H. PGradient> P (adjustable feed pressure gradient factor), valve A and / or valve B will be opened until the tank is discharged or one of the requirements is no longer met.
- boosting may be activated / deactivated by the engine control unit when the engine is operating at an unfavorable operating point (eg, with respect to such parameters as fuel economy, emissions, boost pressure, noise level, readings, and hydraulic controller information ) and by switching the function a more suitable operating point can be achieved.
- an unfavorable operating point eg, with respect to such parameters as fuel economy, emissions, boost pressure, noise level, readings, and hydraulic controller information
- the loading function (FIG. 6) can be activated in order to increase the output torque and thus the boost pressure. This is typically done just before a large torque request is required by the hydraulics. Due to the associated increase in boost pressure, the turbocharger reacts much better when the hydraulic load is applied.
- the boost function (Fig. 1, Fig. 5) can be activated and at the same time the reversing valve 7 are opened. Then, the hydraulic pump 2 acts as a motor and can significantly improve the dynamic behavior of the overall system by providing the crankshaft of the internal combustion engine 1 or its ring gear on the flywheel. stored energy from the hydraulic accumulator 8 in the internal combustion engine 1 initiates.
- the boosting via a control valve can also be controlled continuously to realize a smoother turning on / off of the engine load.
- a starter support (Starting) can also be done via the stored energy in the hydraulic accumulator 8 by means of the hydraulic pump 2.
- the unloading of the memory is initiated by opening the valve A in the working group and / or the valve B in the car.
- the control is Pspeise to P Sp eicher depending on the ratio of the hydraulic pressures of the torques M verdragitbar to M
- valve A and / or B and the reversing valve are actuated and the hydraulic pump is used as a starter motor for the internal combustion engine.
- the energy from the accumulator (8) can be supplied in the same form to assist the starter in cranking the engine as long as the engine speed is less than the idle speed (n ) st ⁇ n Lee r) -
- the Starting support can take over an automatic Star Stop function. If the motor is idling for a parameterizable time t, the motor is then automatically stopped. If the engine speed is equal to zero and the driver / operator of the device steps on the accelerator pedal, valve A and / or valve B and the reversing valve 7 are actuated automatically and the hydraulic pump is used as a starter motor for the internal combustion engine 1. uses. This leads to high savings in fuel consumption. In addition, the start of the engine 1 happens without burdening the electric starter of the engine. The number of charging / discharging cycles of the hydraulic accumulator in the lifetime is usually higher than the number of possible starting operations in the electric starter.
- the internal combustion engine only heats up very slowly to the actual operating temperature. In this cold phase, the wear of the engine is high and the fuel consumption is not optimal. By repeatedly charging / discharging the hydraulic accumulator dynamic loads can be generated, which bring the engine up to operating temperature faster.
- the performance of the working machine can advantageously be increased, the fuel consumption and the wear of the engine are reduced and the engine utilization is optimized. Due to the temporary extra power, downsizing can be carried out, which means as much as, an engine with less displacement can be used, which is energetically more favorable.
- the application principle can be used in all systems with combustion or gas engine in conjunction with hydraulic consumers and hydrostatic drives.
- Tspeise temperature in the hydraulic supply circuit
- T max maximum permissible temperature in the hydraulic accumulator
- T min minimum permissible temperature in the hydraulic accumulator
- ni st current speed of the internal combustion engine
- T max maximum permissible coolant temperature for function
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- General Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201210008192 DE102012008192A1 (en) | 2012-04-26 | 2012-04-26 | hydraulic hybrid |
PCT/EP2013/000626 WO2013159851A1 (en) | 2012-04-26 | 2013-03-02 | Hydraulic hybrid |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2841290A1 true EP2841290A1 (en) | 2015-03-04 |
Family
ID=47891582
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13709764.8A Withdrawn EP2841290A1 (en) | 2012-04-26 | 2013-03-02 | Hydraulic hybrid |
Country Status (5)
Country | Link |
---|---|
US (1) | US10040343B2 (en) |
EP (1) | EP2841290A1 (en) |
JP (1) | JP6346168B2 (en) |
DE (1) | DE102012008192A1 (en) |
WO (1) | WO2013159851A1 (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013213588B4 (en) * | 2013-07-11 | 2019-03-07 | Deere & Company | Agricultural working machine with pneumatic pressure accumulator for buffering short-term peak loads |
DE102013227032A1 (en) | 2013-12-20 | 2015-06-25 | Hamm Ag | Drive system, in particular for a self-propelled construction machine, in particular soil compactor |
DE102013227035A1 (en) * | 2013-12-20 | 2015-06-25 | Hamm Ag | Drive system, in particular for a self-propelled construction machine, in particular soil compactor |
DE102014001369B4 (en) * | 2014-02-03 | 2021-07-01 | Liebherr-Hydraulikbagger Gmbh | Mobile hydraulic construction machine |
WO2015117962A1 (en) | 2014-02-04 | 2015-08-13 | Dana Italia Spa | Travel and work functions integrated into a hydraulic hybrid system |
US9932028B2 (en) | 2014-02-04 | 2018-04-03 | Dana Italia Spa | Controller for a series hydraulic hybrid transmission |
EP3102853B1 (en) | 2014-02-04 | 2019-11-06 | DANA ITALIA S.p.A | Series parallel hydraulic hybrid architecture |
CN105960362B (en) * | 2014-02-04 | 2019-03-26 | 意大利德纳股份有限公司 | The hybrid mode mixed using tandem type |
WO2015117963A1 (en) | 2014-02-04 | 2015-08-13 | Dana Italia Spa | Powerboost hub |
KR20160117484A (en) | 2014-02-04 | 2016-10-10 | 다나 이탈리아 에스피에이 | Accumulator racks |
EP3002147A1 (en) | 2014-10-02 | 2016-04-06 | Dana Italia S.p.A. | Dual drive driveline |
SE539241C2 (en) | 2015-10-19 | 2017-05-23 | Husqvarna Ab | Adaptive control of hydraulic tool on remote demolition robot |
SE542526C2 (en) * | 2015-10-19 | 2020-06-02 | Husqvarna Ab | Energy buffer arrangement and method for remote controlled demolition robot |
SE542525C2 (en) | 2015-10-19 | 2020-06-02 | Husqvarna Ab | Automatic tuning of valve for remote controlled demolition robot |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05287774A (en) * | 1992-04-09 | 1993-11-02 | Komatsu Ltd | Energy regenerator of hydraulic excavator |
KR100286517B1 (en) | 1996-12-03 | 2001-04-16 | 사쿠마 하지메 | Controllers for construction machinery |
KR100325222B1 (en) * | 1999-07-28 | 2002-03-04 | 이계안 | A device and the method for piston stroke detects automatic transmission of vehicle |
JP4560919B2 (en) * | 2000-08-30 | 2010-10-13 | 株式会社アドヴィックス | Hydraulic brake device for vehicle |
JP4512283B2 (en) * | 2001-03-12 | 2010-07-28 | 株式会社小松製作所 | Hybrid construction machine |
US20070227802A1 (en) * | 2004-04-09 | 2007-10-04 | O'brien James A Ii | Hybrid earthmover |
US7322800B2 (en) * | 2004-04-16 | 2008-01-29 | Borgwarner Inc. | System and method of providing hydraulic pressure for mechanical work from an engine lubricating system |
DE102006019672B4 (en) * | 2006-04-27 | 2013-11-14 | Robert Bosch Gmbh | Hydraulic fluid accumulator with integrated high pressure and low pressure chamber |
JP2008045309A (en) * | 2006-08-11 | 2008-02-28 | Shin Caterpillar Mitsubishi Ltd | Control system for working machine |
DE102006046127A1 (en) * | 2006-09-28 | 2008-04-03 | Robert Bosch Gmbh | Energy storage unit |
US8387386B2 (en) * | 2006-11-14 | 2013-03-05 | Ford Global Technologies, Llc | Combination rankine cycle system and hydraulic accumulator system |
US7795752B2 (en) | 2007-11-30 | 2010-09-14 | Caterpillar Inc | System and method for integrated power control |
WO2009073128A2 (en) * | 2007-11-30 | 2009-06-11 | Caterpillar Inc. | Torque distribution system and method |
US7908852B2 (en) * | 2008-02-28 | 2011-03-22 | Caterpillar Inc. | Control system for recovering swing motor kinetic energy |
DE112011100466T5 (en) * | 2010-02-05 | 2012-11-22 | Ricardo, Inc. | Hydraulic control system for dual-clutch transmissions |
US10557481B2 (en) * | 2011-12-23 | 2020-02-11 | J. C. Bamford Excavators Limited | Hydraulic system including a kinetic energy storage device |
US9863293B2 (en) * | 2012-08-01 | 2018-01-09 | GM Global Technology Operations LLC | Variable valve actuation system including an accumulator and a method for controlling the variable valve actuation system |
US20140379241A1 (en) * | 2013-06-20 | 2014-12-25 | GM Global Technology Operations LLC | Hydraulic accumulator temperature estimation for controlling automatic engine stop/start |
-
2012
- 2012-04-26 DE DE201210008192 patent/DE102012008192A1/en not_active Ceased
-
2013
- 2013-03-02 US US14/396,785 patent/US10040343B2/en active Active
- 2013-03-02 JP JP2015507397A patent/JP6346168B2/en active Active
- 2013-03-02 WO PCT/EP2013/000626 patent/WO2013159851A1/en active Application Filing
- 2013-03-02 EP EP13709764.8A patent/EP2841290A1/en not_active Withdrawn
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2013159851A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP6346168B2 (en) | 2018-06-20 |
US10040343B2 (en) | 2018-08-07 |
WO2013159851A1 (en) | 2013-10-31 |
US20150113969A1 (en) | 2015-04-30 |
DE102012008192A1 (en) | 2013-10-31 |
JP2015533201A (en) | 2015-11-19 |
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