WO2017094841A1 - Hybrid vehicle and control method therefor - Google Patents

Hybrid vehicle and control method therefor Download PDF

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Publication number
WO2017094841A1
WO2017094841A1 PCT/JP2016/085736 JP2016085736W WO2017094841A1 WO 2017094841 A1 WO2017094841 A1 WO 2017094841A1 JP 2016085736 W JP2016085736 W JP 2016085736W WO 2017094841 A1 WO2017094841 A1 WO 2017094841A1
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WIPO (PCT)
Prior art keywords
engine
motor generator
hybrid vehicle
cooling water
torque value
Prior art date
Application number
PCT/JP2016/085736
Other languages
French (fr)
Japanese (ja)
Inventor
勉 柿沼
Original Assignee
いすゞ自動車株式会社
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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 CN201680070690.5A priority Critical patent/CN108290573A/en
Publication of WO2017094841A1 publication Critical patent/WO2017094841A1/en

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    • 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
    • B60K6/485—Motor-assist type
    • 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
    • B60K6/26—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 motors or the generators
    • 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
    • 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
    • B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
    • B60K6/54—Transmission for changing ratio
    • 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
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/10—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
    • B60L50/16—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines with provision for separate direct mechanical propulsion
    • 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
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
    • 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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/04—Starting of engines by means of electric motors the motors being associated with current generators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/08—Circuits or control means specially adapted for starting of engines
    • F02N11/0814—Circuits or control means specially adapted for starting of engines comprising means for controlling automatic idle-start-stop
    • F02N11/0844—Circuits or control means specially adapted for starting of engines comprising means for controlling automatic idle-start-stop with means for restarting the engine directly after an engine stop request, e.g. caused by change of driver mind
    • 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
    • B60K6/26—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 motors or the generators
    • B60K2006/268—Electric drive motor starts the engine, i.e. used as starter motor
    • 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
    • B60K2006/4833—Step up or reduction gearing driving generator, e.g. to operate generator in most efficient speed range
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N2200/00—Parameters used for control of starting apparatus
    • F02N2200/02—Parameters used for control of starting apparatus said parameters being related to the engine
    • F02N2200/022—Engine speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N2200/00—Parameters used for control of starting apparatus
    • F02N2200/02—Parameters used for control of starting apparatus said parameters being related to the engine
    • F02N2200/023—Engine temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N2300/00—Control related aspects of engine starting
    • F02N2300/10—Control related aspects of engine starting characterised by the control output, i.e. means or parameters used as a control output or target
    • F02N2300/104—Control of the starter motor 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
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems
    • 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

  • the present disclosure relates to a hybrid vehicle and a control method thereof, and more particularly, to a hybrid vehicle that suppresses a decrease in the charging rate of a high-voltage battery that is a power source of a motor generator that restarts an engine when a change of mind is requested, and a control method thereof. .
  • 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, while regenerative power generation is performed by the motor generator during inertia traveling or braking (see, for example, Patent Document 1).
  • an idling stop is performed in which the engine is automatically stopped when the vehicle is decelerated before stopping and the engine is automatically restarted when starting.
  • An object of the present disclosure is to provide a hybrid vehicle that can suppress a reduction in the charging rate of a high-voltage battery that is a power source of a motor generator that restarts the engine when a change of mind request is made, and a control method thereof.
  • a hybrid vehicle of the present disclosure that achieves the above object includes a hybrid system having a motor generator connected to an output shaft that transmits engine power, an engine cooling system in which cooling water of the engine circulates, a control device, When a change of mind request is generated, the control device is configured so that the torque of the motor generator is calculated from the temperature of the cooling water and the rotational speed of the engine and / or the rotational speed of the motor generator. A value is determined, and control is performed so that the engine is cranked and restarted with the determined torque value using the motor generator.
  • a hybrid vehicle control method of the present disclosure that achieves the above object includes a hybrid system having a motor generator connected to an output shaft that transmits engine power, and an engine cooling system in which cooling water of the engine circulates. And determining whether or not a change of mind request has occurred, and when the change of mind request has occurred, the temperature of the cooling water and the engine speed And / or determining the torque value of the motor generator from the rotational speed of the motor generator, and cranking and restarting the engine with the determined torque value using the motor generator. It is.
  • the hybrid vehicle and its control method of the present disclosure when a change of mind request occurs, it is necessary to restart the engine based on the temperature of the cooling water and the engine speed and / or the motor generator speed. Since the torque value T of the motor generator of an appropriate size is determined and cranking is performed, the reduction in the charging rate of the high voltage battery that is the power source of the motor generator that restarts the engine is suppressed. Can do.
  • FIG. 1 is a configuration diagram of a hybrid vehicle according to an embodiment of the present disclosure.
  • FIG. 2 is a flowchart illustrating a hybrid vehicle control method according to an 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 vehicle including not only a normal passenger car but also a bus, a truck, etc., and an engine 10 and a motor generator (MG) that are controlled in combination according to the driving state of the vehicle.
  • a hybrid system 30 having 31 is 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 rotational power of the crankshaft 13 is transmitted to the transmission 20 through a clutch 14 (for example, a wet multi-plate clutch) connected to one end of the crankshaft 13.
  • the crankshaft 13 is provided with an engine speed sensor 130 that detects the speed of the diesel engine 10.
  • the hybrid system 30 includes a motor generator 31 and an inverter 35, a high voltage battery 32, a DC / DC converter 33, and a low voltage battery 34 that are electrically connected to the motor generator 31 in order.
  • the high voltage battery 32 includes a lithium ion battery and a nickel metal hydride battery.
  • the low voltage battery 34 is a lead battery.
  • the DC / DC converter 33 has a function of controlling the charge / discharge direction and the output voltage between the high voltage battery 32 and the low voltage battery 34.
  • the low voltage battery 34 supplies power to various vehicle electrical components 36.
  • the motor generator 31 is provided with a motor rotation sensor 102 that detects the rotation speed (MG rotation speed) of the motor generator 31.
  • the motor generator 31 is an endless shape wound around a first pulley 15 attached to the rotating shaft 37 and a second pulley 16 attached to the other end of the crankshaft 13 which is an output shaft of the engine body 11. Power is transmitted to and from the engine 10 via the belt-shaped member 17. Note that power can be transmitted using a gear box or the like instead of the two pulleys 15 and 16 and the belt-like member 17. Further, the output shaft of the engine main body 11 connected to the motor generator 31 is not limited to the crankshaft 13, and may be a transmission shaft or the propeller shaft 22 between the engine main body 11 and the transmission 20, for example.
  • the motor generator 31 also has a function of cranking the engine main body 11 in response to a request for restarting the engine 10 when idling is stopped.
  • the hybrid system 30 assists at least a part of the driving force by the motor generator 31 supplied with power from the high voltage battery 32, while at the time of inertia traveling or braking. Performs regenerative power generation by the motor generator 31, converts surplus kinetic energy into electric power, and charges the high voltage battery 32.
  • the cooling water 71 that has removed heat from the engine body 11 is cooled by air cooling using vehicle speed air or cooling air from a fan (not shown) in a radiator (not shown), and then a water pump. 72 forcibly circulates to the engine body 11.
  • the engine cooling system 70 is provided with a cooling water temperature sensor 94 that detects the temperature of the cooling water 71 in the vicinity of the outlet of the engine body 11.
  • control apparatus 80 is connected with each part through the signal wire
  • the control device 80 determines whether or not a change of mind request has occurred (S10).
  • Examples of the change of mind request include a case where at least one selected from depression of an accelerator pedal, steering operation, and shift lever operation satisfies a predetermined condition.
  • control device 80 inputs the detection value of the cooling water temperature sensor 94 and the detection value of the engine speed sensor 130 and / or the detection value of the motor speed sensor 102. (S20).
  • the control device 80 determines the torque value T of the motor generator 31 from the data input in step 20 (S30). Specifically, after the approximate torque value is determined from the detected value of the coolant temperature sensor 94 and preset map data, the detected value of the engine speed sensor 130 and / or the detected value of the motor speed sensor 102 is used. The torque value T is determined by reducing the approximate torque value by feedback control so that the time required to increase the engine speed to a predetermined value is constant. This torque value T is smaller than the maximum required torque value.
  • control device 80 cranks the engine body 11 with the torque value T using the motor generator 31 (S40), and restarts the engine 10 (S50).
  • control device 80 ends the cranking when the detected value of the engine speed sensor 130 reaches a preset threshold value (for example, idle speed or the like) (S60).
  • a preset threshold value for example, idle speed or the like
  • an appropriate amount required for restarting the engine 10 is determined from the temperature of the cooling water 71 and the rotational speed of the engine 10 and / or the rotational speed of the motor generator 31. Since the torque value T of the motor generator 31 is determined and cranking is performed, a decrease in the charging rate of the lithium ion battery 32 can be suppressed.
  • the present invention has an effect of suppressing a decrease in the charging rate of a high voltage battery that is a power source of a motor generator that restarts an engine when a change of mind is requested, and is useful for a hybrid vehicle and a control method thereof. It is.

Abstract

When a change-of-mind request is generated, a control device (80) uses a detected value from a cooling water temperature sensor (94), as well as a detected value from an engine rotational speed sensor (130) and/or a detected value from a motor rotational speed sensor (102), to determine a torque value (T) for a motor generator (31), and uses the motor generator (31) to crank an engine body at the torque value (T) and restart an engine (10).

Description

ハイブリッド車両及びその制御方法Hybrid vehicle and control method thereof
　本開示はハイブリッド車両及びその制御方法に関し、更に詳しくは、チェンジオブマインド要求時にエンジンを再始動するモータージェネレーターの電力源である高電圧バッテリーの充電率の低下を抑制したハイブリッド車両及びその制御方法に関する。 The present disclosure relates to a hybrid vehicle and a control method thereof, and more particularly, to a hybrid vehicle that suppresses a decrease in the charging rate of a high-voltage battery that is a power source of a motor generator that restarts an engine when a change of mind is requested, and a control method thereof. .
　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が行われる（例えば、特許文献１を参照）。 In recent years, a hybrid vehicle (hereinafter referred to as “HEV”) including a hybrid system having an engine and a motor generator that are controlled in combination according to the driving state of the vehicle has attracted attention from the viewpoint of improving fuel efficiency and environmental measures. Yes. In the HEV, when the vehicle is accelerated or started, the driving force is assisted by the motor generator, while regenerative power generation is performed by the motor generator during inertia traveling or braking (see, for example, Patent Document 1).
　このＨＥＶにおいても、燃費向上及び環境対策を更に進めるべく、停車前の車両の減速時にエンジンを自動停止し、かつ発進時にエンジンを自動で再始動させるアイドリングストップが実施されるようになっている。 Also in this HEV, in order to further improve fuel efficiency and environmental measures, an idling stop is performed in which the engine is automatically stopped when the vehicle is decelerated before stopping and the engine is automatically restarted when starting.
　このアイドリングストップにおいて、車両が停止する前の減速時にドライバーが再加速しようとする、いわゆるチェンジオブマインド要求が発生したときは、エンジンをクランキングして再始動することが行われる。 In this idling stop, when a so-called change of mind request that the driver tries to re-accelerate at the time of deceleration before the vehicle stops, the engine is cranked and restarted.
　従来、このエンジンの再始動に、ハイブリッドシステムのモータージェネレーターが用いられる場合には、確実性を向上するために、最大要求トルク値でのクランキングが行われている。そのため、チェンジオブマインドの要求が頻繁にある場合には、モータージェネレーターの電力源である高電圧バッテリーの充電率が早期に低下してしまうという問題があった。 Conventionally, when a motor generator of a hybrid system is used for restarting the engine, cranking is performed at a maximum required torque value in order to improve reliability. For this reason, when there is a frequent request for change of mind, there is a problem that the charging rate of the high voltage battery, which is the power source of the motor generator, is quickly reduced.
日本国特開２００２－２３８１０５号公報Japanese Unexamined Patent Publication No. 2002-238105
　本開示の目的は、チェンジオブマインド要求時にエンジンを再始動するモータージェネレーターの電力源である高電圧バッテリーの充電率の低下を抑制することができるハイブリッド車両及びその制御方法を提供することにある。 An object of the present disclosure is to provide a hybrid vehicle that can suppress a reduction in the charging rate of a high-voltage battery that is a power source of a motor generator that restarts the engine when a change of mind request is made, and a control method thereof.
　上記の目的を達成する本開示のハイブリッド車両は、エンジンの動力を伝達する出力軸に接続された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と、前記エンジンの冷却水が循環するエンジン冷却システムと、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、チェンジオブマインド要求が発生したときは、前記冷却水の温度と、前記エンジンの回転数及び／又は前記モータージェネレーターの回転数とから該モータージェネレーターのトルク値を決定し、該モータージェネレーターを用いて前記決定されたトルク値で該エンジンをクランキングして再始動させる制御を行うように構成されていることを特徴とするものである。 A hybrid vehicle of the present disclosure that achieves the above object includes a hybrid system having a motor generator connected to an output shaft that transmits engine power, an engine cooling system in which cooling water of the engine circulates, a control device, When a change of mind request is generated, the control device is configured so that the torque of the motor generator is calculated from the temperature of the cooling water and the rotational speed of the engine and / or the rotational speed of the motor generator. A value is determined, and control is performed so that the engine is cranked and restarted with the determined torque value using the motor generator.
　また、上記の目的を達成する本開示のハイブリッド車両の制御方法は、エンジンの動力を伝達する出力軸に接続された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と、前記エンジンの冷却水が循環するエンジン冷却システムと、を備えたハイブリッド車両の制御方法であって、チェンジオブマインド要求が発生したか否かを判定し、前記チェンジオブマインド要求が発生したときは、前記冷却水の温度と、前記エンジンの回転数及び／又は前記モータージェネレーターの回転数とから該モータージェネレーターのトルク値を決定し、前記モータージェネレーターを用いて前記決定されたトルク値で前記エンジンをクランキングして再始動させることを特徴とするものである。 In addition, a hybrid vehicle control method of the present disclosure that achieves the above object includes a hybrid system having a motor generator connected to an output shaft that transmits engine power, and an engine cooling system in which cooling water of the engine circulates. And determining whether or not a change of mind request has occurred, and when the change of mind request has occurred, the temperature of the cooling water and the engine speed And / or determining the torque value of the motor generator from the rotational speed of the motor generator, and cranking and restarting the engine with the determined torque value using the motor generator. It is.
　本開示のハイブリッド車両及びその制御方法によれば、チェンジオブマインド要求が発生したときは、冷却水の温度と、エンジンの回転数及び／又はモータージェネレーターの回転数とから、エンジンの再始動に必要となる適切な大きさのモータージェネレーターのトルク値Ｔを決定してクランキングを行うようにしたので、エンジンを再始動するモータージェネレーターの電力源である高電圧バッテリーの充電率の低下を抑制することができる。 According to the hybrid vehicle and its control method of the present disclosure, when a change of mind request occurs, it is necessary to restart the engine based on the temperature of the cooling water and the engine speed and / or the motor generator speed. Since the torque value T of the motor generator of an appropriate size is determined and cranking is performed, the reduction in the charging rate of the high voltage battery that is the power source of the motor generator that restarts the engine is suppressed. Can do.
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。FIG. 1 is a configuration diagram of a hybrid vehicle according to an embodiment of the present disclosure. 図２は、本開示の実施形態からなるハイブリッド車両の制御方法を説明するフロー図である。FIG. 2 is a flowchart illustrating a hybrid vehicle control method according to an embodiment of the present disclosure.
　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。 Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. FIG. 1 illustrates a hybrid vehicle according to an embodiment of the present disclosure.
　このハイブリッド車両（以下「ＨＥＶ」という。）は、普通乗用車のみならず、バスやトラックなどを含む車両であり、車両の運転状態に応じて複合的に制御されるエンジン１０及びモータージェネレーター（ＭＧ）３１を有するハイブリッドシステム３０を備えている。 This hybrid vehicle (hereinafter referred to as “HEV”) is a vehicle including not only a normal passenger car but also a bus, a truck, etc., and an engine 10 and a motor generator (MG) that are controlled in combination according to the driving state of the vehicle. A hybrid system 30 having 31 is provided.
　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。クランクシャフト１３の回転動力は、クランクシャフト１３の一端部に接続するクラッチ１４（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２０に伝達される。なお、クランクシャフト１３には、ディーゼルエンジン１０の回転数を検知するエンジン回転数センサ１３０が設置されている。 In the engine 10, 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 rotational power of the crankshaft 13 is transmitted to the transmission 20 through a clutch 14 (for example, a wet multi-plate clutch) connected to one end of the crankshaft 13. The crankshaft 13 is provided with an engine speed sensor 130 that detects the speed of the diesel engine 10.
　ハイブリッドシステム３０は、モータージェネレーター３１と、そのモータージェネレーター３１に順に電気的に接続するインバーター３５、高電圧バッテリー３２、ＤＣ／ＤＣコンバーター３３及び低電圧バッテリー３４とを有している。 The hybrid system 30 includes a motor generator 31 and an inverter 35, a high voltage battery 32, a DC / DC converter 33, and a low voltage battery 34 that are electrically connected to the motor generator 31 in order.
　高電圧バッテリー３２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３４には鉛バッテリーが用いられる。 Preferred examples of the high voltage battery 32 include a lithium ion battery and a nickel metal hydride battery. The low voltage battery 34 is a lead battery.
　ＤＣ／ＤＣコンバーター３３は、高電圧バッテリー３２と低電圧バッテリー３４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３４は、各種の車両電装品３６に電力を供給する。 The DC / DC converter 33 has a function of controlling the charge / discharge direction and the output voltage between the high voltage battery 32 and the low voltage battery 34. The low voltage battery 34 supplies power to various vehicle electrical components 36.
　このハイブリッドシステム３０における種々のパラメータ、例えば、電流値、電圧値やバッテリーの充電状態（Ｓｔａｔｅ　ｏｆ　Ｃｈａｒｇｅ； ＳＯＣ）などは、バッテリーマネージメントシステム（ＢＭＳ）３９により検出される。また、モータージェネレーター３１には、モータージェネレーター３１の回転数（ＭＧ回転数）を検知するモーター回転センサ１０２が設置されている。 Various parameters in the hybrid system 30, for example, current value, voltage value, state of charge (充電 SOC), and the like are detected by the battery management system (BMS) 39. Further, the motor generator 31 is provided with a motor rotation sensor 102 that detects the rotation speed (MG rotation speed) of the motor generator 31.
　モータージェネレーター３１は、回転軸３７に取り付けられた第１プーリー１５とエンジン本体１１の出力軸であるクランクシャフト１３の他端部に取り付けられた第２プーリー１６との間に掛け回された無端状のベルト状部材１７を介して、エンジン１０との間で動力を伝達する。なお、２つのプーリー１５、１６及びベルト状部材１７の代わりに、ギヤボックスなどを用いて動力を伝達することもできる。また、モータージェネレーター３１に接続するエンジン本体１１の出力軸は、クランクシャフト１３に限るものではなく、例えばエンジン本体１１とトランスミッション２０との間の伝達軸やプロペラシャフト２２であっても良い。 The motor generator 31 is an endless shape wound around a first pulley 15 attached to the rotating shaft 37 and a second pulley 16 attached to the other end of the crankshaft 13 which is an output shaft of the engine body 11. Power is transmitted to and from the engine 10 via the belt-shaped member 17. Note that power can be transmitted using a gear box or the like instead of the two pulleys 15 and 16 and the belt-like member 17. Further, the output shaft of the engine main body 11 connected to the motor generator 31 is not limited to the crankshaft 13, and may be a transmission shaft or the propeller shaft 22 between the engine main body 11 and the transmission 20, for example.
　このモータージェネレーター３１は、アイドリングストップ時におけるエンジン１０の再始動要求の発令に応じて、エンジン本体１１のクランキングを行う機能も有している。 The motor generator 31 also has a function of cranking the engine main body 11 in response to a request for restarting the engine 10 when idling is stopped.
　これらのエンジン１０及びハイブリッドシステム３０は、制御装置８０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３０は高電圧バッテリー３２から電力を供給されたモータージェネレーター３１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３１による回生発電を行い、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３２を充電する。 These engine 10 and hybrid system 30 are controlled by a control device 80. Specifically, at the time of HEV start or acceleration, the hybrid system 30 assists at least a part of the driving force by the motor generator 31 supplied with power from the high voltage battery 32, while at the time of inertia traveling or braking. Performs regenerative power generation by the motor generator 31, converts surplus kinetic energy into electric power, and charges the high voltage battery 32.
　エンジン冷却システム７０においては、エンジン本体１１を除熱した冷却水７１は、ラジエーター（図示せず）において車速風やファン（図示せず）の冷却風を利用した空冷により冷却された後に、ウォータポンプ７２によりエンジン本体１１へ強制循環される。 In the engine cooling system 70, the cooling water 71 that has removed heat from the engine body 11 is cooled by air cooling using vehicle speed air or cooling air from a fan (not shown) in a radiator (not shown), and then a water pump. 72 forcibly circulates to the engine body 11.
　このエンジン冷却システム７０には、エンジン本体１１の出口近傍における冷却水７１の温度を検出する冷却水温度センサ９４が設けられている。 The engine cooling system 70 is provided with a cooling water temperature sensor 94 that detects the temperature of the cooling water 71 in the vicinity of the outlet of the engine body 11.
　このようなＨＥＶの制御方法を、制御装置８０の機能として図２に基づいて以下に説明する。なお、制御装置８０は、信号線（一点鎖線で示す）を通じて、各部と接続している。 Such a HEV control method will be described below as a function of the control device 80 with reference to FIG. In addition, the control apparatus 80 is connected with each part through the signal wire | line (it shows with a dashed-dotted line).
　制御装置８０は、チェンジオブマインド要求の発生の有無を判定する（Ｓ１０）。このチェンジオブマインド要求としては、アクセルペダルの踏み込み、ステアリングの操作及びシフトレバーの操作のうちから選ばれる少なくとも１つが、所定の条件を満たした場合などが例示される。 The control device 80 determines whether or not a change of mind request has occurred (S10). Examples of the change of mind request include a case where at least one selected from depression of an accelerator pedal, steering operation, and shift lever operation satisfies a predetermined condition.
　次に、制御装置８０は、チェンジオブマインド要求が発生したときは、冷却水温度センサ９４の検出値と、エンジン回転数センサ１３０の検出値及び／又はモーター回転数センサ１０２の検出値とを入力する（Ｓ２０）。 Next, when a change of mind request is generated, the control device 80 inputs the detection value of the cooling water temperature sensor 94 and the detection value of the engine speed sensor 130 and / or the detection value of the motor speed sensor 102. (S20).
　次に、制御装置８０は、ステップ２０で入力したデータからモータージェネレーター３１のトルク値Ｔを決定する（Ｓ３０）。具体的には、冷却水温度センサ９４の検出値と予め設定されたマップデータとから概略トルク値を決定した後に、エンジン回転数センサ１３０の検出値及び／又はモーター回転数センサ１０２の検出値から、所定のエンジン回転数まで上昇させるのに要する時間が一定となるようにフィードバック制御により概略トルク値を減じてトルク値Ｔを決定する。このトルク値Ｔは、最大要求トルク値よりも小さくなる。 Next, the control device 80 determines the torque value T of the motor generator 31 from the data input in step 20 (S30). Specifically, after the approximate torque value is determined from the detected value of the coolant temperature sensor 94 and preset map data, the detected value of the engine speed sensor 130 and / or the detected value of the motor speed sensor 102 is used. The torque value T is determined by reducing the approximate torque value by feedback control so that the time required to increase the engine speed to a predetermined value is constant. This torque value T is smaller than the maximum required torque value.
　そして、制御装置８０は、モータージェネレーター３１を用いてトルク値Ｔでエンジン本体１１をクランキングして（Ｓ４０）、エンジン１０を再始動させる（Ｓ５０）。 Then, the control device 80 cranks the engine body 11 with the torque value T using the motor generator 31 (S40), and restarts the engine 10 (S50).
　最後に制御装置８０は、エンジン回転数センサ１３０の検出値が予め設定されたしきい値（例えば、アイドル回転数など）になったときにクランキングを終了する（Ｓ６０）。 Finally, the control device 80 ends the cranking when the detected value of the engine speed sensor 130 reaches a preset threshold value (for example, idle speed or the like) (S60).
　このように、チェンジオブマインド要求が発生したときは、冷却水７１の温度と、エンジン１０の回転数及び／又はモータージェネレーター３１の回転数とから、エンジン１０の再始動に必要となる適切な大きさのモータージェネレーター３１のトルク値Ｔを決定してクランキングを行うようにしたので、リチウムイオンバッテリー３２の充電率の低下を抑制することができるのである。 As described above, when a change of mind request is generated, an appropriate amount required for restarting the engine 10 is determined from the temperature of the cooling water 71 and the rotational speed of the engine 10 and / or the rotational speed of the motor generator 31. Since the torque value T of the motor generator 31 is determined and cranking is performed, a decrease in the charging rate of the lithium ion battery 32 can be suppressed.
　本出願は、2015年12月3日付で出願された日本国特許出願（特願2015-236755）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。 This application is based on a Japanese patent application (Japanese Patent Application No. 2015-236755) filed on December 3, 2015, the contents of which are incorporated herein by reference.
　本発明は、チェンジオブマインド要求時にエンジンを再始動するモータージェネレーターの電力源である高電圧バッテリーの充電率の低下を抑制することができるという効果を有し、ハイブリッド車両及びその制御方法等に有用である。 INDUSTRIAL APPLICABILITY The present invention has an effect of suppressing a decrease in the charging rate of a high voltage battery that is a power source of a motor generator that restarts an engine when a change of mind is requested, and is useful for a hybrid vehicle and a control method thereof. It is.
　１０　エンジン
　３０　ハイブリッドシステム
　３１　モータージェネレーター
　３２　高電圧バッテリー
　３３　ＤＣ／ＤＣコンバーター
　８０　制御装置
　９４　冷却水温度センサ
　１０２　モーター回転数センサ
　１３０　エンジン回転数センサ DESCRIPTION OF SYMBOLS 10 Engine 30 Hybrid system 31 Motor generator 32 High voltage battery 33 DC / DC converter 80 Control apparatus 94 Cooling water temperature sensor 102 Motor rotation speed sensor 130 Engine rotation speed sensor

Claims (4)

  1. 　エンジンの動力を伝達する出力軸に接続された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と、前記エンジンの冷却水が循環するエンジン冷却システムと、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、チェンジオブマインド要求が発生したときは、前記冷却水の温度と、前記エンジンの回転数及び／又は前記モータージェネレーターの回転数とから該モータージェネレーターのトルク値を決定し、該モータージェネレーターを用いて前記決定されたトルク値で該エンジンをクランキングして再始動させる制御を行う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。     In a hybrid vehicle comprising a hybrid system having a motor generator connected to an output shaft for transmitting engine power, an engine cooling system in which cooling water of the engine circulates, and a control device,
    When a change of mind request occurs, the control device determines a torque value of the motor generator from the temperature of the cooling water and the rotational speed of the engine and / or the rotational speed of the motor generator. A hybrid vehicle configured to perform control for cranking and restarting the engine with the determined torque value using a generator.
  2. 　前記制御装置は、前記モータージェネレーターを用いて前記決定されたトルク値で前記エンジンをクランキングして再始動させた後に、該エンジンの回転数が予め設定されたしきい値になったときに前記クランキングを停止する制御を行うように構成されている請求項１に記載のハイブリッド車両。 The control device uses the motor generator to crank the engine with the determined torque value and restart the engine, and then when the engine speed reaches a preset threshold value, The hybrid vehicle according to claim 1, wherein the hybrid vehicle is configured to perform control for stopping cranking.
  3. 　前記ハイブリッド車両は、
    　　　前記エンジンの前記冷却水の温度を検出する冷却水温度センサと、
    　　　前記エンジンの前記回転数を検知するエンジン回転数センサと、
    　　　前記モータージェネレーターの前記回転数を検知するモーター回転数センサと、をさらに備え、
    　前記制御装置は、前記チェンジオブマインド要求が発生したことに応じて、
    　　　前記冷却水温度センサにより検出された前記冷却水の温度と所定のマップデータとから、第１トルク値を決定し、
    　　　前記エンジン回転数センサ及び／又は前記モーター回転数センサにより検出された前記エンジンの回転数及び／又は前記モータージェネレーターの回転数に基づくフィードバック制御により前記第１トルク値を減じて前記モータージェネレーターの前記トルク値を決定する、
    ように構成されている、請求項１または２に記載のハイブリッド車両。     The hybrid vehicle
    A cooling water temperature sensor for detecting a temperature of the cooling water of the engine;
    An engine speed sensor for detecting the engine speed;
    A motor rotation number sensor for detecting the rotation number of the motor generator,
    In response to the occurrence of the change of mind request, the control device
    From the cooling water temperature detected by the cooling water temperature sensor and predetermined map data, a first torque value is determined,
    The first torque value is reduced by feedback control based on the engine speed and / or the motor generator speed detected by the engine speed sensor and / or the motor speed sensor to reduce the torque of the motor generator. Determine the value,
    The hybrid vehicle according to claim 1, configured as described above.
  4. 　エンジンの動力を伝達する出力軸に接続された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と、前記エンジンの冷却水が循環するエンジン冷却システムと、を備えたハイブリッド車両の制御方法であって、
    　チェンジオブマインド要求が発生したか否かを判定し、
    　前記チェンジオブマインド要求が発生したときは、前記冷却水の温度と、前記エンジンの回転数及び／又は前記モータージェネレーターの回転数とから該モータージェネレーターのトルク値を決定し、
    　前記モータージェネレーターを用いて前記決定されたトルク値で前記エンジンをクランキングして再始動させることを特徴とするハイブリッド車両の制御方法。     A hybrid vehicle control method comprising: a hybrid system having a motor generator connected to an output shaft for transmitting engine power; and an engine cooling system for circulating cooling water of the engine,
    Determine whether a change of mind request has occurred,
    When the change of mind request occurs, the torque value of the motor generator is determined from the temperature of the cooling water, the engine speed and / or the motor generator speed,
    A control method for a hybrid vehicle, wherein the engine is cranked and restarted with the determined torque value using the motor generator.
PCT/JP2016/085736 2015-12-03 2016-12-01 Hybrid vehicle and control method therefor WO2017094841A1 (en)

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