WO2017188359A1 - ハイブリッド車両 - Google Patents

ハイブリッド車両 Download PDF

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Publication number
WO2017188359A1
WO2017188359A1 PCT/JP2017/016668 JP2017016668W WO2017188359A1 WO 2017188359 A1 WO2017188359 A1 WO 2017188359A1 JP 2017016668 W JP2017016668 W JP 2017016668W WO 2017188359 A1 WO2017188359 A1 WO 2017188359A1
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WO
WIPO (PCT)
Prior art keywords
clutch
engine
hybrid vehicle
motor generator
control device
Prior art date
Application number
PCT/JP2017/016668
Other languages
English (en)
French (fr)
Inventor
治雄 鈴木
洋紀 瀬戸
亮 森本
Original Assignee
いすゞ自動車株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by いすゞ自動車株式会社 filed Critical いすゞ自動車株式会社
Priority to EP17789641.2A priority Critical patent/EP3450275B1/en
Priority to US16/097,208 priority patent/US10696292B2/en
Priority to CN201780025561.9A priority patent/CN109070869B/zh
Publication of WO2017188359A1 publication Critical patent/WO2017188359A1/ja

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    • 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
    • B60W20/40—Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers
    • 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
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • 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
    • B60K6/22—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 apparatus, components or means specially adapted for HEVs
    • B60K6/28—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 apparatus, components or means specially adapted for HEVs characterised by the electric energy storing means, e.g. batteries or capacitors
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    • 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
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    • B60K6/22—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 apparatus, components or means specially adapted for HEVs
    • B60K6/38—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 apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
    • B60K6/387—Actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means
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    • 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
    • B60K6/22—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 apparatus, components or means specially adapted for HEVs
    • B60K6/40—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 apparatus, components or means specially adapted for HEVs characterised by the assembly or relative disposition of components
    • 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
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    • 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
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    • B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
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    • 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
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/02—Clutches
    • B60W2510/0208—Clutch engagement state, e.g. engaged or disengaged
    • 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
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/02—Clutches
    • B60W2510/0291—Clutch temperature
    • 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
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/06—Combustion engines, Gas turbines
    • B60W2510/0676—Engine temperature
    • 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
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/24—Energy storage means
    • B60W2510/242—Energy storage means for electrical energy
    • B60W2510/244—Charge state
    • 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
    • B60W2555/00—Input parameters relating to exterior conditions, not covered by groups B60W2552/00, B60W2554/00
    • B60W2555/20—Ambient conditions, e.g. wind or rain
    • 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
    • B60W2710/02—Clutches
    • B60W2710/021—Clutch engagement state
    • 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
    • B60W2710/02—Clutches
    • B60W2710/029—Clutch temperature
    • 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
    • B60W2710/06—Combustion engines, Gas turbines
    • B60W2710/0688—Engine temperature
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/92—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
    • Y02T10/62—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
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • 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
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors

Definitions

  • the present disclosure relates to a hybrid vehicle, and more particularly to a hybrid vehicle that promotes engine warm-up more than before.
  • HEV hybrid vehicle
  • a hybrid system having an engine and a motor generator that are controlled in combination according to the driving state of the vehicle
  • the driving force is assisted by the motor generator when the vehicle is accelerated or started, while the battery is charged by regenerative power generation by the motor generator during inertia traveling or braking (for example, Patent Document 1). See).
  • the engine and transmission in this HEV are connected via a wet clutch.
  • the wet clutch is connected / disconnected at the time of shifting in the transmission.
  • the present disclosure has been made in view of the above, and an object of the present disclosure is to provide a hybrid vehicle that can quickly reduce a shift shock caused by a wet clutch in a cold state.
  • the hybrid vehicle of the present disclosure that achieves the above object includes an engine and a motor generator connected via an engine clutch, a transmission connected to the motor generator via a motor clutch, and an electric connection to the motor generator. And a hybrid system having a motor generator and a battery, and a control device, the control device disengages the engine clutch when the hybrid vehicle is cold.
  • the battery is configured to be driven to rotate by supplying electric power from the battery to the motor generator.
  • the engine clutch when the hybrid vehicle is cold, the engine clutch is disengaged and the motor generator rotates the plate in the clutch to stir the clutch oil and raise the temperature. Therefore, the shift shock caused by the wet clutch can be reduced at an early stage.
  • FIG. 1 is a configuration diagram of a hybrid vehicle according to an embodiment of the present disclosure.
  • FIG. 2 is a cross-sectional view showing the structure of the wet multi-plate clutch.
  • FIG. 3 is a flowchart illustrating functions of the control device in the hybrid vehicle according to the embodiment of the present disclosure.
  • FIG. 1 illustrates a hybrid vehicle according to an embodiment of the present disclosure.
  • This hybrid vehicle (hereinafter referred to as “HEV”) is a normal passenger car or a large vehicle such as a bus or a truck, and is a hybrid that controls the vehicle in combination with the engine 10, the motor generator 21, the transmission 30, and the driving state.
  • System 20 is mainly provided.
  • the crankshaft 13 is rotationally driven by thermal energy generated by the combustion of fuel in a plurality (four in this example) of cylinders 12 formed in the engine body 11.
  • the engine 10 is a diesel engine or a gasoline engine.
  • the engine body 11 is cooled by an engine cooling circuit 45 through which the cooling water 46 circulates.
  • the engine cooling circuit 45 is provided with a cooling water temperature sensor (not shown) that detects the water temperature of the cooling water 46.
  • an outside air temperature sensor (not shown) is attached to the vehicle.
  • the crankshaft 13 is connected to one end of the rotating shaft 22 of the motor generator 21 via an engine clutch 14 formed of a wet multi-plate clutch.
  • the engine clutch 14 includes a cylindrical case 80, a cylindrical hub 81 arranged coaxially in the case 80, and a shaft between the case 80 and the hub 81.
  • the separate plate 82 is engaged with the inner peripheral surface of the case 80 and the friction plate 83 is engaged with the outer peripheral surface of the hub 81 so as to be movable in the axial direction.
  • the space between the case 80 and the hub 81 is filled with clutch oil 86 supplied from a supply port 85 formed in the hub 81. Further, a clutch oil temperature sensor (not shown) for detecting the oil temperature of the clutch oil 86 is provided.
  • One of the case 80 and the hub 81 is connected to the crankshaft 13 and the other is connected to the rotating shaft 22.
  • the case 80 and the hub 81 are fastened and brought into contact with each other to transmit power.
  • the pressing by the piston 84 is released, the case 80 and the hub 81 are released, and the power is cut off in a disconnected state.
  • the motor generator 21 is a permanent magnet AC synchronous motor capable of generating operation.
  • the other end of the rotating shaft 22 of the motor generator 21 is connected to an input shaft 31 of the transmission 30 through a motor clutch 15 (for example, a wet multi-plate clutch).
  • the transmission 30 uses an AMT or an AT that automatically shifts to a target gear determined based on the HEV operating state and preset map data.
  • the transmission 30 is not limited to an automatic transmission type such as AMT, and may be a manual type in which a driver manually changes gears.
  • Rotational power changed by the transmission 30 is transmitted to the differential 34 through the propeller shaft 33 connected to the output shaft 32, and is distributed as a driving force to the pair of driving wheels 35 as rear wheels.
  • the hybrid system 20 includes a motor generator 21, an inverter 23 that is electrically connected to the motor generator 21, a high voltage battery 24, a DC / DC converter 25, and a low voltage battery 26.
  • the high voltage battery 24 include a lithium ion battery and a nickel metal hydride battery.
  • the low voltage battery 26 is a lead battery.
  • the DC / DC converter 25 has a function of controlling the charge / discharge direction and the output voltage between the high voltage battery 24 and the low voltage battery 26.
  • the low voltage battery 26 supplies power to various vehicle electrical components 27.
  • the various parameters in the hybrid system 20, such as the power value and the state of charge (SOC) of the battery, are detected by the battery control system (BMS) 28.
  • BMS battery control system
  • the engine 10 and the hybrid system 20 are controlled by the control device 70. Specifically, at the time of HEV start or acceleration, the hybrid system 20 assists at least a part of the driving force by the motor generator 21 supplied with power from the high voltage battery 24, while at the time of inertia traveling or braking. Performs regenerative power generation by the motor generator 21, converts surplus kinetic energy generated in the propeller shaft 33 and the like into electric power, and charges the high-voltage battery 24. In addition, this HEV enables so-called motor independent travel using only the motor generator 21 as a drive source by disengaging the engine clutch 14 and engaging the motor clutch 15.
  • control apparatus 70 is connected with each part, such as the engine clutch 14, the motor clutch 15, and BMS28, via the signal line (it shows with a dashed-dotted line).
  • the control device 70 determines the HEV based on at least one selected from the water temperature of the cooling water 46 of the engine cooling circuit 45, the oil temperature of the clutch oil 86, the outside air temperature, and the like. It is determined whether or not the engine is cold, specifically, whether or not the engine clutch 14 needs to be warmed up (S10). Then, when the HEV is cold, the control device 70 turns off the engine clutch 14 (S20), supplies electric power from the high voltage battery 24 to the motor generator 21, and rotates it (S30). As a result, in the engine clutch 14, the separate plate 82 or the friction plate 83 is rotated by the rotary shaft 22 and rotates, so that the clutch oil 86 is stirred and the temperature is increased.
  • the motor clutch 15 is in a contact state when the HEV is traveling, and the HEV is in a motor independent traveling state. On the other hand, when the HEV is stopped, the motor clutch 15 is disengaged and the motor generator 21 is idling.
  • the control device 70 compares the SOC value of the high voltage battery 24 acquired through the BMS 28 with a preset lower limit SOC value (S40).
  • the lower limit SOC value of the high voltage battery 24 is a lower limit value of the recommended use range determined from the battery specifications. For example, in the case of a lithium ion battery, the lower limit SOC value is in a range of about 20 to 30%.
  • the control device 70 sets the engine clutch 14 to the engaged state (S50), and starts the engine 10 (when the motor is in a single traveling state)
  • the motor generator 21 is rotationally driven by the driving force of) to start power generation and charge the high voltage battery 24 (S60).
  • both the separation plate 82 and the friction plate 83 rotate, so that the clutch oil 86 is agitated and further heated.
  • control device 70 monitors the SOC value of the high voltage battery 24 (S70), and returns to step 20 when the SOC value exceeds the lower limit SOC value. Thereby, in step 30 and step 60, the clutch oil 86 is stirred again and the temperature is raised.
  • the engine clutch 14 which is a wet multi-plate clutch is disengaged, and the motor generator 21 rotates the plate 82/83 in the clutch, so that the clutch oil 86 is discharged. Since the temperature is raised by stirring and warming up, the shift shock caused by the wet clutch can be reduced at an early stage.
  • the present invention has an effect that the shift shock caused by the wet clutch can be reduced at an early stage, and is useful for a hybrid vehicle or the like.

Abstract

制御装置７０は、ハイブリッド車両が冷間時であるときは、湿式多板クラッチからなるエンジンクラッチ１４を断状態にして、高電圧バッテリー２４からモータージェネレーター２１に電力を供給して回転駆動させることで、エンジンクラッチ１４内のクラッチオイル８６を撹拌して昇温する制御を行う。

Description

ハイブリッド車両
　本開示はハイブリッド車両に関し、更に詳しくは、従来よりもエンジンの暖機を促進したハイブリッド車両に関する。
　近年、燃費向上及び環境対策などの観点から、車両の運転状態に応じて複合的に制御されるエンジン及びモータージェネレーターを有するハイブリッドシステムを備えたハイブリッド車両（以下「ＨＥＶ」という。）が注目されている。このＨＥＶにおいては、車両の加速時や発進時には、モータージェネレーターによる駆動力のアシストが行われる一方で、慣性走行時や制動時にはモータージェネレーターによる回生発電によりバッテリーの充電が行われる（例えば、特許文献１を参照）。
　一般に、このＨＥＶにおけるエンジンとトランスミッションとは、湿式クラッチを介して接続されている。この湿式クラッチは、トランスミッションでの変速時に断接される。
日本国特開２００２－２３８１０５号公報
　しかしながら、冷間時にはクラッチオイルが低温となって粘性が増加するため、変速時の断接に伴うショックが大きくなって、ドライバビリティを損なうという問題がある。
　本開示は、上記を鑑みてなされたものであり、その目的は、冷間時における湿式クラッチに起因する変速ショックを早期に低減することができるハイブリッド車両を提供することにある。
　上記の目的を達成する本開示のハイブリッド車両は、エンジンクラッチを介して接続されたエンジン及びモータージェネレーターと、前記モータージェネレーターにモータークラッチを介して接続されたトランスミッションと、前記モータージェネレーターに電気的に接続するバッテリーと、前記モータージェネレーター及びバッテリーを有するハイブリッドシステムと、制御装置と、を備えたハイブリッド車両において、前記制御装置は、前記ハイブリッド車両が冷間時であるときは、前記エンジンクラッチを断状態にして、前記バッテリーから前記モータージェネレーターに電力を供給して回転駆動させるように構成されていることを特徴とするものである。
　本開示のハイブリッド車両によれば、ハイブリッド車両が冷間時であるときは、エンジンクラッチを断状態にして、モータージェネレーターによりクラッチ内のプレートを回転させることで、クラッチオイルを撹拌して昇温させて暖機するようにしたので、湿式クラッチに起因する変速ショックを早期に低減することができる。
図１は、本開示の実施形態からなるハイブリッド車両の構成図である。 図２は、湿式多板クラッチの構造を示す断面図である。 図３は、本開示の実施形態からなるハイブリッド車両における制御装置の機能を説明するフロー図である。
　以下に、本開示の実施の形態について、図面を参照して説明する。図１は、本開示の実施形態からなるハイブリッド車両を示す。
　このハイブリッド車両（以下「ＨＥＶ」という。）は、普通乗用車又はバスやトラックなどの大型自動車であり、エンジン１０、モータージェネレーター２１及びトランスミッション３０と、運転状態に応じて車両を複合的に制御するハイブリッドシステム２０とを主に備えている。
　エンジン１０においては、エンジン本体１１に形成された複数（この例では４個）の気筒１２内における燃料の燃焼により発生した熱エネルギーにより、クランクシャフト１３が回転駆動される。このエンジン１０には、ディーゼルエンジンやガソリンエンジンが用いられる。エンジン本体１１は、冷却水４６が循環するエンジン冷却回路４５により冷却される。エンジン冷却回路４５は、冷却水４６の水温を検出する冷却水温度センサ（図示略）が設けられている。また、車両には、外気温度センサ（図示略）が取り付けられている。
　クランクシャフト１３の一端は、湿式多板クラッチからなるエンジンクラッチ１４を介してモータージェネレーター２１の回転軸２２の一端に接続されている。このエンジンクラッチ１４は、例えば図２に示すように、筒状のケース８０と、そのケース８０内に同軸で配置された筒状のハブ８１と、それらのケース８０とハブ８１との間に軸方向に沿って交互に複数配置された大径環状のセパレートプレート８２及び小径環状のフリクションプレート８３と、それらのセパレートプレート８２及びフリクションプレート８３を軸方向へ押圧可能な油圧式のピストン８４とを備えている。セパレートプレート８２はケース８０の内周面に、フリクションプレート８３はハブ８１の外周面に、それぞれ軸方向に移動可能に係合している。また、ケース８０とハブ８１との間は、ハブ８１に形成された供給口８５から供給されたクラッチオイル８６で満たされている。また、クラッチオイル８６の油温を検出するクラッチオイル温度センサ（図示略）が設けられている。
　ケース８０及びハブ８１のうちの一方がクランクシャフト１３に接続され、他方が回転軸２２に接続されている。エンジンクラッチ１４においては、ピストン８４がセパレートプレート８２及びフリクションプレート８３を軸方向へ押圧して互いに摩擦係合させると、ケース８０とハブ８１とが締結されて接状態になって動力が伝達される。その一方で、ピストン８４による押圧が解除されると、ケース８０とハブ８１とが解放されて断状態となって動力が遮断される。
　モータージェネレーター２１には、発電運転が可能な永久磁石式の交流同期モーターが用いられている。このモータージェネレーター２１の回転軸２２の他端は、モータークラッチ１５（例えば、湿式多板クラッチなど）を通じて、トランスミッション３０のインプットシャフト３１に接続されている。
　トランスミッション３０には、ＨＥＶの運転状態と予め設定されたマップデータとに基づいて決定された目標変速段へ自動的に変速するＡＭＴ又はＡＴが用いられている。なお、トランスミッション３０は、ＡＭＴのような自動変速式に限るものではなく、ドライバーが手動で変速するマニュアル式であってもよい。
　トランスミッション３０で変速された回転動力は、アウトプットシャフト３２に接続されたプロペラシャフト３３を通じてデファレンシャル３４に伝達され、後輪である一対の駆動輪３５にそれぞれ駆動力として分配される。
　ハイブリッドシステム２０は、モータージェネレーター２１と、そのモータージェネレーター２１に電気的に接続するインバーター２３、高電圧バッテリー２４、ＤＣ／ＤＣコンバーター２５及び低電圧バッテリー２６とを有している。
　高電圧バッテリー２４としては、リチウムイオンバッテリーやニッケル水素バッテリーなどが好ましく例示される。また、低電圧バッテリー２６には鉛バッテリーが用いられる。
　ＤＣ／ＤＣコンバーター２５は、高電圧バッテリー２４と低電圧バッテリー２６との間における充放電の方向及び出力電圧を制御する機能を有している。また、低電圧バッテリー２６は、各種の車両電装品２７に電力を供給する。
　このハイブリッドシステム２０における種々のパラメータ、例えば、電力値やバッテリーの充電状態（Ｓｔａｔｅ　ｏｆ　Ｃｈａｒｇｅ；ＳＯＣ）などは、バッテリー制御システム（ＢＭＳ）２８により検出される。
　これらのエンジン１０及びハイブリッドシステム２０は、制御装置７０により制御される。具体的には、ＨＥＶの発進時や加速時には、ハイブリッドシステム２０は高電圧バッテリー２４から電力を供給されたモータージェネレーター２１により駆動力の少なくとも一部をアシストする一方で、慣性走行時や制動時においては、モータージェネレーター２１による回生発電を行い、プロペラシャフト３３等に発生する余剰の運動エネルギーを電力に変換して高電圧バッテリー２４を充電する。また、このＨＥＶは、エンジンクラッチ１４を断状態に、かつモータークラッチ１５を接状態にすることで、モータージェネレーター２１のみを駆動源とする、いわゆるモーター単独走行が可能となる。
　このようなＨＥＶにおける制御装置７０の機能を、図２に基づいて以下に説明する。なお、制御装置７０は、信号線（一点鎖線で示す）を通じて、エンジンクラッチ１４、モータークラッチ１５、ＢＭＳ２８などの各部と接続している。
　制御装置７０は、ＨＥＶの走行中又は停車中（アイドル中）に、エンジン冷却回路４５の冷却水４６の水温、クラッチオイル８６の油温及び外気温などから選ばれる少なくとも１つに基づいて、ＨＥＶが冷間時であるか否か、具体的にはエンジンクラッチ１４の暖機が必要であるか否かを判定する（Ｓ１０）。そして、制御装置７０は、ＨＥＶが冷間時であるときは、エンジンクラッチ１４を断状態にして（Ｓ２０）、高電圧バッテリー２４からモータージェネレーター２１に電力を供給して回転駆動させる（Ｓ３０）。これにより、エンジンクラッチ１４において、セパレートプレート８２又はフリクションプレート８３が回転軸２２に連れ回されて回転するので、クラッチオイル８６が撹拌されて昇温する。
　なお、このとき、モータークラッチ１５は、ＨＥＶが走行中であるときは接状態であり、ＨＥＶはモーター単独走行状態となる。一方で、ＨＥＶが停車中であるときは、モータークラッチ１５は断状態であり、モータージェネレーター２１は空回し状態となる。
　次に、制御装置７０は、ＢＭＳ２８を通じて取得した高電圧バッテリー２４のＳＯＣ値を、予め設定された下限ＳＯＣ値と比較する（Ｓ４０）。この高電圧バッテリー２４の下限ＳＯＣ値は、バッテリーの仕様から定められた推奨使用範囲の下限値であり、例えばリチウムイオンバッテリーの場合には約２０～３０％の範囲の値となる。
　そして、制御装置７０は、高電圧バッテリー２４のＳＯＣ値が下限ＳＯＣ値以下となったときは、エンジンクラッチ１４を接状態にして（Ｓ５０）、エンジン１０（モーター単独走行状態の時はエンジンを起動）の駆動力によりモータージェネレーター２１を回転駆動することで発電を開始させて高電圧バッテリー２４を充電する（Ｓ６０）。これにより、セパレートプレート８２及びフリクションプレート８３が共に回転するので、クラッチオイル８６が撹拌されて更に昇温する。
　引き続いて制御装置７０は、高電圧バッテリー２４のＳＯＣ値を監視し（Ｓ７０）、そのＳＯＣ値が下限ＳＯＣ値超になったときはステップ２０に戻る。これにより、ステップ３０及びステップ６０において、再びクラッチオイル８６が撹拌されて昇温する。
　このように、ＨＥＶが冷間時であるときは、湿式多板クラッチであるエンジンクラッチ１４を断状態にして、モータージェネレーター２１によりクラッチ内のプレート８２／８３を回転させることで、クラッチオイル８６を撹拌して昇温して暖機するようにしたので、湿式クラッチに起因する変速ショックを早期に低減することができるのである。
　本出願は、2016年4月27日付で出願された日本国特許出願（特願2016-089640）に基づくものであり、その内容はここに参照として取り込まれる。
　本発明は、湿式クラッチに起因する変速ショックを早期に低減することができるという効果を有し、ハイブリッド車両等に有用である。
　１０　エンジン
　１４　エンジンクラッチ
　１５　モータークラッチ
　２０　ハイブリッドシステム
　２１　モータージェネレーター
　２４　高電圧バッテリー
　８２　セパレートプレート
　８３　フリクションプレート
　８６　クラッチオイル

Claims (4)

  1. 　エンジンクラッチを介して接続されたエンジン及びモータージェネレーターと、前記モータージェネレーターにモータークラッチを介して接続されたトランスミッションと、前記モータージェネレーターに電気的に接続するバッテリーと、前記モータージェネレーター及びバッテリーを有するハイブリッドシステムと、制御装置と、を備えたハイブリッド車両において、
    　前記制御装置は、
    　前記ハイブリッド車両が冷間時であるときは、前記エンジンクラッチを断状態にして、前記バッテリーから前記モータージェネレーターに電力を供給して回転駆動させるように構成されていることを特徴とするハイブリッド車両。
  2. 　冷却水が循環するエンジン冷却回路を備え、
    　前記制御装置は、前記冷却水の水温、前記エンジンクラッチのクラッチオイルの油温及び外気温から選ばれる少なくとも１つに基づいて、前記ハイブリッド車両が冷間時であることを判定する請求項１に記載のハイブリッド車両。
  3. 　前記制御装置は、前記バッテリーのＳＯＣが予め設定された下限ＳＯＣ値以下となったときは、前記エンジンクラッチを接状態にして、前記エンジンで前記モータージェネレーターを回転駆動することで発電を開始させて、前記バッテリーを充電する請求項１又は２に記載のハイブリッド車両。
  4. 　前記制御装置は、前記モータークラッチを接状態にして、前記ハイブリッド車両をモーター単独走行状態にする請求項１又は２に記載のハイブリッド車両。
PCT/JP2017/016668 2016-04-27 2017-04-27 ハイブリッド車両 WO2017188359A1 (ja)

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