WO2013042217A1 - 車両および車両用制御方法 - Google Patents
車両および車両用制御方法 Download PDFInfo
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- WO2013042217A1 WO2013042217A1 PCT/JP2011/071435 JP2011071435W WO2013042217A1 WO 2013042217 A1 WO2013042217 A1 WO 2013042217A1 JP 2011071435 W JP2011071435 W JP 2011071435W WO 2013042217 A1 WO2013042217 A1 WO 2013042217A1
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- WIPO (PCT)
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- engine
- vehicle
- predetermined range
- rotational speed
- ecu
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Classifications
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- 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
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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
- B60K6/44—Series-parallel type
- B60K6/445—Differential gearing distribution type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—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
- 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
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- 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
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- 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
- F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
- F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
-
- 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
- F02N11/0818—Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode
- F02N11/0833—Vehicle conditions
- F02N11/084—State of vehicle accessories, e.g. air condition or power steering
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- 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
- F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
- F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
- F02N15/04—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears
- F02N15/043—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the gearing including a speed reducer
- F02N15/046—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the gearing including a speed reducer of the planetary type
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- 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
- F02N2200/06—Parameters used for control of starting apparatus said parameters being related to the power supply or driving circuits for the starter
- F02N2200/061—Battery state of charge [SOC]
-
- 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
- F02N2300/20—Control related aspects of engine starting characterised by the control method
- F02N2300/2002—Control related aspects of engine starting characterised by the control method using different starting modes, methods, or actuators depending on circumstances, e.g. engine temperature or component wear
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- 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 invention relates to control when an engine restart is requested.
- Patent Document 1 when an engine restart condition is satisfied during engine stop control, if the engine speed falls below a predetermined value, the engine is restarted with a starter to prevent engine stall. What is started is disclosed.
- An object of the present invention is to provide a vehicle and a vehicle control method for suppressing vibration generated by resonance when the engine is restarted from being transmitted to a driver.
- a vehicle includes a drive device including an engine and a control device for starting the engine.
- the control device suppresses engine restart when the engine rotation speed is within a predetermined range based on the resonance generation region of the drive device.
- the rotational speed is out of a predetermined range, a starting operation is performed.
- the predetermined range is a range in which at least one of the upper limit value and the lower limit value of the resonance generating region is moved by a predetermined amount in the increasing direction of the rotational speed.
- the predetermined amount is an amount that takes into account the response delay time from when the start operation is started until the decrease in rotational speed is suppressed.
- the vehicle further includes a rotating electric machine for starting the engine.
- the control device performs a start operation by cranking the engine using a rotating electrical machine when the rotational speed is out of a predetermined range.
- the engine is provided with a fuel injection device.
- the control device performs the start operation by controlling the fuel injection device so that the fuel injection is resumed when the rotational speed is out of a predetermined range.
- the vehicle includes a first rotating electrical machine, a second rotating electrical machine coupled to the drive wheel, an engine output shaft, a first rotating electrical machine first rotating shaft, and a second rotating electrical machine second rotating shaft.
- Each of the three elements is mechanically connected, and any one of the three elements is a reaction force element, thereby further including a power transmission device capable of transmitting power between the other two elements.
- the power transmission device is a planetary gear mechanism having a sun gear, a pinion gear, a carrier, and a ring gear.
- the sun gear is coupled to the first rotation shaft.
- the carrier is connected to the output shaft of the engine.
- the ring gear is connected to the second rotating shaft.
- a vehicle control method is a vehicle control method used for a vehicle equipped with a drive device including an engine.
- the engine restart is performed when the engine rotation speed is within a predetermined range based on the resonance occurrence region of the drive device.
- a step of starting the engine when the rotational speed is out of a predetermined range when there is a restart request during the stop operation.
- the engine restart when there is an engine restart request during the engine stop operation, the engine restart is suppressed when the engine speed is within a predetermined range based on the resonance generation region of the drive device.
- the starting operation is performed.
- production of the vibration resulting from resonance at the time of engine restart can be suppressed. Therefore, it is possible to provide a vehicle and a vehicle control method that suppress transmission of vibration generated by resonance when the engine is restarted to the driver.
- FIG. 1 is an overall block diagram of a vehicle according to an embodiment. It is a functional block diagram of ECU mounted in the vehicle which concerns on this Embodiment. It is a figure which shows the relationship between an engine rotational speed and the grade of the shock which generate
- the vehicle 1 includes a drive device 2, a start switch 150, and an ECU (Electronic Control Unit) 200.
- ECU Electronic Control Unit
- the drive device 2 includes an engine 10, a drive shaft 16, a first motor generator (hereinafter referred to as a first MG) 20, a second motor generator (hereinafter referred to as a second MG) 30, and a power split device 40.
- PCU Power Control Unit
- the vehicle 1 travels by driving force output from at least one of the engine 10 and the second MG 30.
- the power generated by the engine 10 is divided into two paths by the power split device 40.
- One of the two routes is a route transmitted to the drive wheel 80 via the speed reducer 58, and the other route is a route transmitted to the first MG 20.
- the first MG 20 and the second MG 30 are, for example, three-phase AC rotating electric machines.
- First MG 20 and second MG 30 are driven by PCU 60.
- the first MG 20 has a function as a generator that generates power using the power of the engine 10 divided by the power split device 40 and charges the battery 70 via the PCU 60. Further, first MG 20 receives electric power from battery 70 and rotates a crankshaft that is an output shaft of engine 10. Thus, the first MG 20 has a function as a starter for starting the engine 10.
- the second MG 30 has a function as a driving motor that applies driving force to the driving wheels 80 using at least one of the electric power stored in the battery 70 and the electric power generated by the first MG 20. Second MG 30 also has a function as a generator for charging battery 70 via PCU 60 using electric power generated by regenerative braking.
- the engine 10 is an internal combustion engine such as a gasoline engine or a diesel engine.
- the engine 10 includes a plurality of cylinders 102 and a fuel injection device 104 that supplies fuel to each of the plurality of cylinders 102. Based on the control signal S1 from the ECU 200, the fuel injection device 104 injects an appropriate amount of fuel to each cylinder at an appropriate time, or stops fuel injection to each cylinder.
- the engine 10 is provided with an engine rotation speed sensor 11 for detecting the rotation speed of the crankshaft of the engine 10 (hereinafter referred to as engine rotation speed) Ne.
- the engine rotation speed sensor 11 transmits a signal indicating the detected engine rotation speed Ne to the ECU 200.
- the engine 10 is provided with a water temperature sensor 166.
- the water temperature sensor 166 detects the temperature Tw (referred to as “cooling water temperature” in the following description) Tw flowing through the engine 10.
- the water temperature sensor 166 transmits a signal indicating the detected cooling water temperature Tw to the ECU 200.
- the power split device 40 mechanically connects each of the three elements of the drive shaft 16 for rotating the drive wheels 80, the output shaft of the engine 10, and the rotary shaft of the first MG 20.
- the power split device 40 enables transmission of power between the other two elements by using any one of the three elements described above as a reaction force element.
- the rotation shaft of second MG 30 is connected to drive shaft 16.
- the power split device 40 is a planetary gear mechanism including a sun gear 50, a pinion gear 52, a carrier 54, and a ring gear 56.
- Pinion gear 52 meshes with each of sun gear 50 and ring gear 56.
- the carrier 54 supports the pinion gear 52 so as to be capable of rotating, and is connected to the crankshaft of the engine 10.
- Sun gear 50 is coupled to the rotation shaft of first MG 20.
- Ring gear 56 is coupled to the rotation shaft of second MG 30 and reduction gear 58 via drive shaft 16.
- Reduction gear 58 transmits power from power split device 40 and second MG 30 to drive wheels 80. Reducer 58 transmits the reaction force from the road surface received by drive wheels 80 to power split device 40 and second MG 30.
- PCU 60 converts the DC power stored in battery 70 into AC power for driving first MG 20 and second MG 30.
- PCU 60 includes a converter and an inverter (both not shown) controlled based on control signal S2 from ECU 200.
- the converter boosts the voltage of the DC power received from battery 70 and outputs it to the inverter.
- the inverter converts the DC power output from the converter into AC power and outputs the AC power to first MG 20 and / or second MG 30.
- first MG 20 and / or second MG 30 are driven using the electric power stored in battery 70.
- the inverter converts AC power generated by the first MG 20 and / or the second MG 30 into DC power and outputs the DC power to the converter.
- the converter steps down the voltage of the DC power output from the inverter and outputs the voltage to battery 70. Thereby, battery 70 is charged using the electric power generated by first MG 20 and / or second MG 30.
- the converter may be omitted.
- the battery 70 is a power storage device and a rechargeable DC power source.
- a secondary battery such as nickel metal hydride or lithium ion is used.
- the voltage of the battery 70 is about 200V, for example.
- Battery 70 may be charged using electric power supplied from an external power source (not shown) in addition to being charged using electric power generated by first MG 20 and / or second MG 30 as described above.
- the battery 70 is not limited to a secondary battery, but may be a battery capable of generating a DC voltage, such as a capacitor, a solar battery, or a fuel battery.
- the battery 70 includes a battery temperature sensor 156 for detecting the battery temperature TB of the battery 70, a current sensor 158 for detecting the current IB of the battery 70, and a voltage sensor 160 for detecting the voltage VB of the battery 70. And are provided.
- the battery temperature sensor 156 transmits a signal indicating the battery temperature TB to the ECU 200.
- Current sensor 158 transmits a signal indicating current IB to ECU 200.
- Voltage sensor 160 transmits a signal indicating voltage VB to ECU 200.
- the start switch 150 is, for example, a push-type switch.
- the start switch 150 may be configured to insert a key into a key cylinder and rotate it to a predetermined position.
- Start switch 150 is connected to ECU 200.
- the start switch 150 transmits a signal ST to the ECU 200.
- the ECU200 judges that it received the start instruction, for example, when signal ST is received when the system of vehicle 1 is a stop state, and makes the system of vehicle 1 shift from a stop state to a start state. Further, when the signal ST is received when the system of the vehicle 1 is in the activated state, the ECU 200 determines that a stop instruction has been received, and shifts the system of the vehicle 1 from the activated state to the stopped state.
- the operation of the start switch 150 by the driver when the system of the vehicle 1 is in the activated state is referred to as an IG off operation, and the driver operates the start switch 150 when the system of the vehicle 1 is in the stopped state.
- the operation is called IG on operation.
- the plurality of devices are in an operable state by supplying power to the plurality of devices necessary for the vehicle 1 to travel.
- some devices are stopped by supplying power to some of the plurality of devices necessary for the vehicle 1 to travel. Will stop operating.
- Accelerator pedal 162 is provided in the driver's seat.
- the accelerator pedal 162 is provided with a pedal stroke sensor 164.
- the pedal stroke sensor 164 detects the stroke amount AP of the accelerator pedal 162.
- the pedal stroke sensor 164 transmits a signal indicating the stroke amount AP to the ECU 200.
- an accelerator pedal depression force sensor for detecting the occupant's depression force on the accelerator pedal 162 may be used.
- the first resolver 12 detects the rotational speed Nm1 of the first MG 20.
- the first resolver 12 transmits a signal indicating the detected rotation speed Nm1 to the ECU 200.
- the second resolver 13 detects the rotational speed Nm2 of the second MG 30.
- the second resolver 13 transmits a signal indicating the detected rotation speed Nm2 to the ECU 200.
- the wheel speed sensor 14 detects the rotational speed Nw of the drive wheel 80.
- the wheel speed sensor 14 transmits a signal indicating the detected rotation speed Nw to the ECU 200.
- ECU 200 calculates vehicle speed V based on the received rotational speed Nw.
- ECU 200 may calculate vehicle speed V based on rotation speed Nm2 of second MG 30 instead of rotation speed Nw.
- the ECU 200 generates a control signal S1 for controlling the engine 10 and outputs the generated control signal S1 to the engine 10.
- ECU 200 also generates a control signal S2 for controlling PCU 60 and outputs the generated control signal S2 to PCU 60.
- the ECU 200 controls the entire hybrid system, that is, the charging / discharging state of the battery 70 and the operating states of the engine 10, the first MG 20 and the second MG 30 so that the vehicle 1 can operate most efficiently by controlling the engine 10, the PCU 60, and the like. .
- ECU 200 calculates a required driving force corresponding to the amount of depression of an accelerator pedal (not shown) provided in the driver's seat. ECU 200 controls the torque of first MG 20 and second MG 30 and the output of engine 10 in accordance with the calculated required driving force.
- the vehicle 1 when the engine 10 is inefficient at the time of starting or running at a low speed, the vehicle 1 travels only by the second MG 30. Further, during normal travel, for example, the power split device 40 divides the power of the engine 10 into two paths of power.
- the drive wheel 80 is directly driven by one power.
- the first MG 20 is driven with the other power to generate power.
- ECU 200 drives second MG 30 using the generated electric power. In this way, driving of the driving wheel 80 is performed by driving the second MG 30.
- the second MG 30 driven by the rotation of the drive wheel 80 functions as a generator to perform regenerative braking.
- the electric power recovered by regenerative braking is stored in the battery 70.
- ECU 200 increases the output of engine 10 to increase the first MG 20 when the remaining capacity of the power storage device (described in the following description as SOC (State of Charge)) decreases and charging is particularly necessary. Increase the amount of power generated by Thereby, the SOC of the battery 70 is increased.
- the ECU 200 may perform control to increase the driving force from the engine 10 as necessary even during low-speed traveling. For example, when the battery 70 needs to be charged as described above, an auxiliary machine such as an air conditioner is driven, or the cooling water temperature Tw of the engine 10 is raised to a predetermined temperature.
- the ECU 200 determines the input power allowed when the battery 70 is charged based on the battery temperature TB and the current SOC (in the following description, “charging power upper limit value”). Output power (to be described as “discharge power upper limit value Wout” in the following description). For example, when the current SOC decreases, discharge power upper limit Wout is set to be gradually lower. On the other hand, when the current SOC increases, charging power upper limit value Win is set to gradually decrease.
- the secondary battery used as the battery 70 has a temperature dependency in which the internal resistance increases at a low temperature. Further, at a high temperature, it is necessary to prevent the temperature from excessively rising due to further heat generation. For this reason, it is preferable to reduce each of the discharge power upper limit value Wout and the charge power upper limit value Win when the battery temperature TB is low and high. ECU 200 sets charge power upper limit value Win and discharge power upper limit value Wout by using, for example, a map or the like according to battery temperature TB and the current SOC.
- the ECU 200 executes automatic stop control and automatic start control for the engine 10 based on the state of the vehicle 1.
- the ECU 200 automatically stops the engine 10 in order to improve fuel efficiency depending on the driving state of the vehicle 1 and the state of the battery 70.
- ECU 200 restarts engine 10 depending on the operating state of vehicle 1 or the state of battery 70 even after engine 10 is stopped.
- ECU 200 permits execution of automatic stop control of engine 10 when an automatic stop permission condition for the state of vehicle 1 is satisfied.
- ECU 200 prohibits execution of automatic stop control when the automatic stop permission condition is not satisfied.
- the ECU 200 restarts the engine 10 when the execution of the automatic constant stop control is prohibited and the engine 10 is stopped or in a stop operation.
- the automatic stop permission conditions are, for example, required power for the vehicle 1, battery temperature TB of the battery 70, SOC of the battery 70, presence or absence of deterioration of the battery 70, cooling water temperature Tw of the engine 10, temperature of the three-way catalytic converter of the engine 10, It includes conditions for at least one of the vehicle speed V and the presence / absence of an operation request for the air conditioner.
- the condition for the required power for the vehicle 1 is a condition that the required power Pv for the vehicle 1 based on the stroke amount AP of the accelerator pedal 162 is equal to or lower than the upper limit value of the power Pm that can be output by the second MG 30.
- the condition regarding the battery temperature TB of the battery 70 is, for example, a condition that the battery temperature TB is higher than the threshold value TB (0).
- the condition regarding the SOC of the battery 70 is, for example, a condition that the SOC is higher than the threshold SOC (0).
- the condition regarding the cooling water temperature of the engine 10 is, for example, a condition that the cooling water temperature Tw is in a warm-up completion state higher than the threshold value Tw (0).
- the condition regarding the temperature of the three-way catalytic converter of the engine 10 is a condition that the temperature of the three-way catalytic converter is in a warm-up completion state higher than a threshold value.
- the temperature of the three-way catalytic converter may be detected directly using a sensor, or may be estimated based on the exhaust temperature or the intake air amount.
- the condition for the vehicle speed V is a condition that the vehicle speed V is lower than a threshold value V (0) for preventing the first MG 20 from over-rotating.
- the condition regarding whether or not the air conditioner is requested to operate is, for example, a condition that there is no request for operating an air conditioner (for example, a heater or an air conditioner compressor).
- Each of the threshold values used in each of the above conditions is to start the engine 10 using the first MG 20 and the electric power that enables the vehicle 1 to travel only by the second MG 30 with the engine 10 stopped. It is set based on the viewpoint of securing the electric power that enables this, or the viewpoint of suppressing the deterioration of the battery 70.
- the automatic stop permission condition is not limited to the above-described condition.
- the automatic permission condition may include conditions other than those described above.
- ECU 200 permits automatic stop control when the automatic stop condition described above is satisfied. That is, ECU 200 stops engine 10 when engine 10 is operating. The ECU 200 stops the operation of the engine 10 by stopping fuel injection to the engine 10, for example. Alternatively, the ECU 200 uses the first MG 20 to lower the engine rotation speed Ne so that it becomes zero. ECU 200 maintains the stopped state of engine 10 when engine 10 is stopped.
- the ECU 200 prohibits the automatic stop control when the above-described automatic stop condition is not satisfied. That is, when engine 10 is operating, ECU 200 maintains the engine 10 operating state and does not stop engine 10. ECU 200 performs a start operation of engine 10 when engine 10 is stopped or during a stop operation by automatic stop control.
- ECU 200 performs a starting operation by cranking using first MG 20 when engine 10 is completely stopped, for example.
- ECU 200 restarts fuel injection together with cranking using first MG 20.
- ECU 200 resumes fuel injection without performing cranking using first MG 20, for example, when engine speed Ne is higher than the speed at which complete explosion is possible before engine 10 is stopped.
- the starting operation is performed.
- the ECU 200 executes the opening degree control and the ignition control of the throttle valve 110 during the starting operation so that the engine rotational speed Ne is equal to or higher than the target rotational speed (for example, idle rotational speed).
- the engine rotation speed Ne is within a predetermined range based on the resonance occurrence region of the drive device 2.
- the engine speed is, restart of the engine 10 is suppressed, and when the engine rotational speed Ne is out of a predetermined range, a starting operation is performed.
- FIG. 2 shows a functional block diagram of ECU 200 mounted on vehicle 1 according to the present embodiment.
- ECU 200 includes a stop determination unit 202, a request determination unit 204, a rotational speed determination unit 206, a stop control unit 208, and a start control unit 210.
- the stop determination unit 202 determines whether or not the engine 10 is in a stop operation. The stop determination unit 202 determines that the engine 10 is in a stop operation when the automatic stop control is being executed and the engine rotational speed Ne is greater than the threshold value Ne (0).
- During execution of automatic stop control refers to a state in which the fuel injection is stopped and the engine speed Ne is reduced using the first MG 20 when the automatic stop permission condition of the engine 10 is satisfied.
- the stop determination unit 202 may determine that the automatic stop control is being executed when the automatic stop permission condition described above is satisfied.
- the threshold value Ne (0) is a value for determining whether or not the engine 10 is rotating, and is zero, for example.
- stop determination unit 202 may turn on the stop determination flag when it is determined that the engine 10 is in a stop operation, for example.
- the request determination unit 204 determines whether or not there is a restart request for the engine 10 when the stop determination unit 202 determines that the engine 10 is in a stop operation. Specifically, the request determination unit 204 determines that there is a restart request for the engine 10 when the automatic stop permission condition described above is not satisfied. For example, when the stop determination flag is on, the request determination unit 204 determines whether or not there is a restart request for the engine 10, and when there is a restart request, the request determination unit 204 sets the restart determination flag. It may be turned on.
- Rotational speed determination unit 206 determines whether or not the engine rotational speed Ne is within a predetermined range.
- the predetermined range is a range defined based on the resonance generation region of the drive device 2.
- the resonance generation region of the drive device 2 is a rotation speed region lower than the engine rotation speed Ne during idling.
- the predetermined range at least one of the upper limit value and the lower limit value of the resonance generation region of the drive device 2 is moved by a predetermined amount in the increasing direction of the engine rotation speed Ne. It is a range.
- the predetermined amount is, for example, an amount that takes into account the response delay time from when the engine start operation is started until the decrease in the engine rotational speed Ne is suppressed.
- the predetermined range may be a range including a resonance generating region, for example.
- the predetermined range may be a range wider than the resonance generation region.
- the resonance generation region and the lower limit value may be common, and the upper limit value may be larger than the upper limit value of the resonance generation region.
- the rotational speed determination unit 206 may turn on the rotational speed determination flag when the engine rotational speed Ne is within a predetermined range.
- FIG. 3 shows the relationship between the engine speed Ne and the degree of shock that occurs at the start.
- the vertical axis of FIG. 3 indicates the degree of shock that occurs when the engine 10 is started.
- the horizontal axis of FIG. 3 shows the engine rotation speed Ne.
- the predetermined range is a region of the engine speed Ne where the lower limit value is Ne (1) and the upper limit value is Ne (2).
- the predetermined range is, for example, a region in which the above-described response delay time is taken into account, and a region in which the degree of shock that occurs at the time of starting is higher than a threshold value (for example, G (1)).
- G (1) a threshold value
- the shock generated at the time of starting refers to a shock generated due to rotational fluctuation that occurs when the engine speed Ne is increased using the first MG 20.
- a region outside a predetermined range that is, a first region where the engine rotational speed Ne is lower than Ne (1), and a second region where the engine rotational speed Ne is higher than Ne (2), Is set as a restart permission area of the engine 10.
- Stop control unit 208 determines that there is no restart request by request determination unit 204, or determines that there is a restart request by request determination unit 204, and engine speed Ne by rotation speed determination unit 206. Is determined to be within a predetermined range, the start operation of the engine 10 is suppressed and the stop operation is continued.
- Stop control unit 208 determines that there is no restart request by request determination unit 204, or determines that there is a restart request by request determination unit 204, and engine speed is determined by rotation speed determination unit 206. When it is determined that the speed Ne is within a predetermined range, the starting operation of the engine 10 may be prohibited or may be delayed.
- the stop control unit 208 suppresses execution of the start operation of the engine 10 and continues the stop operation, for example, when the restart request flag is on and the rotation speed determination flag is on. You may make it make it.
- start control unit 210 10 start operations, that is, start control is executed.
- the start control unit 210 performs cranking to increase the engine rotational speed Ne using the first MG 20 as a start operation. Alternatively, the start control unit 210 restarts fuel injection using the fuel injection device 104 as a start operation.
- the start control unit 210 uses the first MG 20 to increase the rotation speed at which the engine rotation speed Ne can be completed.
- the engine 10 may be started by restarting fuel injection using the fuel injection device 104 after being raised.
- the start control unit 210 when the engine rotation speed Ne is higher than the rotation speed region that requires cranking using the first MG 20, the start control unit 210 does not perform cranking but uses the fuel injection device 104 to perform fuel.
- the engine 10 may be started by restarting the injection.
- start control unit 210 may start the engine 10 when the restart determination flag is on and the rotation speed determination flag is off, for example.
- stop determination unit 202, request determination unit 204, rotation speed determination unit 206, stop control unit 208, and start control unit 210 are all programs in which the CPU of ECU 200 is stored in memory. However, it may be realized by hardware. Such a program is recorded in a storage medium and installed in the vehicle 1.
- step (hereinafter, step is referred to as S) 100 ECU 200 determines whether engine 10 is in a stop operation or not. If engine 10 is in a stop operation (YES in S100), the process proceeds to S102. If not (NO in S100), the process returns to S100.
- ECU 200 determines whether or not there is a restart request for engine 10. If there is a restart request for engine 10 (YES in S102), the process proceeds to S104. If not (NO in S102), the process proceeds to S108.
- ECU 200 determines whether engine rotational speed Ne is outside a predetermined range. If engine rotation speed Ne is outside the predetermined range (YES in S104), the process proceeds to S106. If not (NO in S104), the process proceeds to S108.
- the ECU 200 executes start control of the engine 10.
- ECU 200 delays the starting operation of engine 10 and continues the stopping operation.
- the predetermined range indicates a region between the engine rotational speeds Ne (1) and Ne (2).
- the resonance generation region indicates a region between the engine rotation speeds Ne (3) and Ne (4).
- the driver increases the stroke amount AP of the accelerator pedal 162 so that the power Pv required for the vehicle 1 exceeds the upper limit value of the power Pm that can be output using the second MG 30. Assume a case.
- engine rotation speed Ne changes as shown by the broken line in FIG. 5, when the automatic stop condition of engine 10 is not satisfied at time T (1) and there is a request to restart engine 10 (YES in S102). ) Since engine rotational speed Ne is outside the predetermined range (YES in S104), engine 10 is started (S106). For example, when the fuel injection is resumed, the engine rotational speed Ne increases toward the target rotational speed. Therefore, the engine rotation speed Ne is started without entering the resonance generation region.
- the engine 10 is started (S106). For example, the engine rotational speed Ne is increased to a rotational speed higher than the rotational speed at which complete explosion is possible by cranking using the first MG 20. Thereafter, the engine 10 is started by throttle opening control, fuel injection control, ignition control, and the like.
- the engine rotation speed Ne starts after passing through the resonance generation region by the start operation after passing through the resonance generation region by the stop operation. It is suppressed that the engine rotation speed Ne falls within the resonance generation region during a period in which the engine rotation speed Ne increases from a decrease due to the start of the engine. As a result, the period during which the engine rotation speed Ne is in the resonance generation region can be shortened when the engine 10 is started when the engine rotation speed Ne is in the resonance generation region.
- the engine rotation speed Ne is based on the resonance occurrence region of the drive device 2 in advance.
- restart of the engine 10 is suppressed.
- the start operation is performed when the engine rotation speed Ne is out of a predetermined range. Therefore, generation
- vehicle 1 having the driving wheel 80 as the front wheel is shown as an example, but the driving method is not particularly limited thereto.
- the vehicle 1 may have a rear wheel as a driving wheel.
- vehicle 1 may be a vehicle in which second MG 30 in FIG. 1 is coupled to a drive shaft for driving rear wheels instead of front wheel drive shaft 16.
- a transmission mechanism may be provided between drive shaft 16 and speed reducer 58 or between drive shaft 16 and second MG 30.
- the format of the hybrid vehicle to which the present invention is applied is not limited to the format shown in FIG.
- the present invention may be applied to, for example, a series or parallel hybrid vehicle.
- vehicle 1 may be configured such that second MG 30 is omitted, the rotation shaft of first MG 20 is directly coupled to the output shaft of engine 10, and a transmission having a clutch is used instead of power split device 40.
- the vehicle to which the present invention is applied is not limited to a hybrid vehicle.
- the present invention may be applied to, for example, a vehicle using only an engine as a drive source.
Abstract
Description
Claims (8)
- エンジン(10)を含む駆動装置(2)と、
前記エンジンの始動動作を行なうための制御装置(200)とを含み、
前記制御装置は、前記エンジンの停止動作中に前記エンジンの再始動要求がある場合に、前記エンジンの回転速度が前記駆動装置の共振発生領域に基づく予め定められた範囲内であるときには、前記エンジンの再始動を抑制し、前記回転速度が前記予め定められた範囲外であるときには、前記始動動作を行なう、車両。 - 前記予め定められた範囲は、前記共振発生領域の上限値及び下限値のうちの少なくともいずれか一方を前記回転速度の増加方向に予め定められた量だけ移動させた範囲である、請求項1に記載の車両。
- 前記予め定められた量は、前記始動動作が開始されてから前記回転速度の低下が抑制されるまでの応答遅れ時間を考慮した量である、請求項2に記載の車両。
- 前記車両は、前記エンジンを始動させるための回転電機(20)をさらに含み、
前記制御装置は、前記停止動作中に前記再始動要求がある場合に、前記回転速度が前記予め定められた範囲外であるときには、前記回転電機を用いて前記エンジンをクランキングさせることによって前記始動動作を行なう、請求項1に記載の車両。 - 前記エンジンには、燃料噴射装置(104)が設けられ、
前記制御装置は、前記停止動作中に前記再始動要求がある場合に、前記回転速度が前記予め定められた範囲外であるときには、燃料噴射が再開するように前記燃料噴射装置を制御することによって前記始動動作を行なう、請求項1に記載の車両。 - 前記車両は、
第1回転電機(20)と、
駆動輪(80)に連結される第2回転電機(30)と、
前記エンジンの出力軸、前記第1回転電機の第1回転軸および前記第2回転電機の第2回転軸の三要素の各々を機械的に連結し、前記三要素のうちのいずれか一つを反力要素とすることによって、他の2つの要素間での動力伝達が可能な動力伝達装置(40)とをさらに含む、請求項1に記載の車両。 - 前記動力伝達装置は、サンギヤ(50)と、ピニオンギヤ(52)と、キャリア(54)と、リングギヤ(56)とを有する遊星歯車機構であって、
前記サンギヤは、前記第1回転軸に連結され、
前記キャリアは、前記エンジンの前記出力軸に連結され、
前記リングギヤは、前記第2回転軸に連結される、請求項6に記載の車両。 - エンジン(10)を含む駆動装置(2)を搭載する車両に用いられる車両用制御方法であって、
前記エンジンの停止動作中に前記エンジンの再始動要求がある場合に、前記エンジンの回転速度が前記駆動装置の共振発生領域に基づく予め定められた範囲内であるときには、前記エンジンの再始動を抑制するステップと、
前記停止動作中に前記再始動要求がある場合に、前記回転速度が前記予め定められた範囲外であるときには、前記エンジンの始動動作を行なうステップとを含む、車両用制御方法。
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PCT/JP2011/071435 WO2013042217A1 (ja) | 2011-09-21 | 2011-09-21 | 車両および車両用制御方法 |
EP11872855.9A EP2759690A1 (en) | 2011-09-21 | 2011-09-21 | Vehicle and method for controlling vehicle |
US14/345,455 US20140338642A1 (en) | 2011-09-21 | 2011-09-21 | Vehicle and control method for vehicle |
CN201180073586.9A CN103827467A (zh) | 2011-09-21 | 2011-09-21 | 车辆和车辆用控制方法 |
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WO2015019164A1 (en) * | 2013-08-09 | 2015-02-12 | Toyota Jidosha Kabushiki Kaisha | Hybrid vehicle |
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US11161403B2 (en) | 2012-02-03 | 2021-11-02 | Ge Hybrid Technologies, Llc | Apparatus and method for delivering power in a hybrid vehicle |
EP2809540B1 (en) * | 2012-02-03 | 2019-12-18 | GE Hybrid Technologies, LLC | Apparatus for delivering power in a hybrid vehicle |
JP6642255B2 (ja) * | 2016-05-10 | 2020-02-05 | 株式会社デンソー | エンジン制御装置 |
JP6443464B2 (ja) * | 2017-01-27 | 2018-12-26 | トヨタ自動車株式会社 | 車両の制御装置 |
CN107762642B (zh) * | 2017-10-30 | 2020-02-07 | 奇瑞汽车股份有限公司 | 控制车辆怠速停机的方法和装置 |
JP6977622B2 (ja) * | 2018-03-06 | 2021-12-08 | トヨタ自動車株式会社 | ハイブリッド車両の制御装置 |
CN112523844B (zh) * | 2020-11-24 | 2022-01-18 | 浙江吉利控股集团有限公司 | 一种发动机起燃的智能控制方法、装置、存储介质及设备 |
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- 2011-09-21 US US14/345,455 patent/US20140338642A1/en not_active Abandoned
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