WO2012085294A1 - Unité de commande de véhicule automobile et procédé de commande d'un véhicule automobile - Google Patents

Unité de commande de véhicule automobile et procédé de commande d'un véhicule automobile Download PDF

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Publication number
WO2012085294A1
WO2012085294A1 PCT/EP2011/074041 EP2011074041W WO2012085294A1 WO 2012085294 A1 WO2012085294 A1 WO 2012085294A1 EP 2011074041 W EP2011074041 W EP 2011074041W WO 2012085294 A1 WO2012085294 A1 WO 2012085294A1
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WO
WIPO (PCT)
Prior art keywords
starter
vehicle
engine
temperature
controller
Prior art date
Application number
PCT/EP2011/074041
Other languages
English (en)
Inventor
Philippa Laing
Original Assignee
Land Rover
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Land Rover filed Critical Land Rover
Publication of WO2012085294A1 publication Critical patent/WO2012085294A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18—Propelling the vehicle
    • B60W30/192—Mitigating problems related to power-up or power-down of the driveline, e.g. start-up of a cold engine
    • B60W30/194—Mitigating problems related to power-up or power-down of the driveline, e.g. start-up of a cold engine related to low temperature conditions, e.g. high viscosity of hydraulic fluid
    • 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
    • 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
    • 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
    • F02N11/006—Starting of engines by means of electric motors using a plurality of electric motors
    • 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
    • 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
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/06—Combustion engines, Gas turbines
    • B60W2510/0676—Engine temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/08—Electric propulsion units
    • B60W2510/087—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2555/00—Input parameters relating to exterior conditions, not covered by groups B60W2552/00, B60W2554/00
    • B60W2555/20—Ambient conditions, e.g. wind or rain
    • 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
    • F02N2200/00—Parameters used for control of starting apparatus
    • F02N2200/12—Parameters used for control of starting apparatus said parameters being related to the vehicle exterior
    • F02N2200/122—Atmospheric 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
    • F02N2300/20—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
    • 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 a controller and to a method for controlling a motor vehicle and particularly, but not exclusively, to a controller and method for controlling a hybrid electric vehicle (HEV). More particularly but not exclusively the invention relates to a controller and a method for controlling a parallel-type HEV. Aspects of the invention relate to a controller, to a method and to a vehicle.
  • HEV hybrid electric vehicle
  • HEV hybrid electric vehicle
  • the vehicle may be operated in an electric vehicle (EV) mode in which torque to the driveline is provided exclusively by the electric machine.
  • EV electric vehicle
  • the vehicle may be operated in a parallel mode in which torque is provided to the driveline by the internal combustion engine and electric machine.
  • starting of an engine may be performed by means of a conventional starter motor or by means of an alternative electric machine such as a crankshaft integrated motor generator (CIMG) or belt integrated starter/generator (BISG).
  • CIMG crankshaft integrated motor generator
  • BISG belt integrated starter/generator
  • controller for a motor vehicle, the controller being operable to determine which of a plurality of starter devices is to be used to start an engine of a vehicle responsive to a temperature value determined by the controller, the controller being operable to select a first starter device and not a second starter device when a temperature value is below a first threshold value and a second starter device and not a first starter device when a temperature value is above the first threshold value.
  • Embodiments of the invention have the advantage that an optimum starter device may be chosen to start a vehicle for a given temperature value determined by the controller.
  • the temperature value may for example correspond to an operating temperature of the vehicle.
  • an alternative starter device may be used instead.
  • the temperature value may be a temperature value determined by the controller directly by reference to a sensor, by reference to a signal provided to the controller by a communications network such as a controller area network (CAN), indirectly based on one or more other vehicle parameters, or any other suitable means.
  • a controller according to an embodiment of the invention may be useful in a conventional non-hybrid motor vehicle, in a stop/start motor vehicle or in a hybrid electric vehicle.
  • the controller may be operable to select a plurality of starter devices to start an engine when a temperature value is below a second threshold value that is less than the first threshold value.
  • a plurality of starter devices may be employed.
  • This feature has the advantage that where an engine requires an increased amount of torque in order to be cranked, a plurality of starter devices may be employed.
  • the power available from a single device may be insufficient to start an engine reliably, reliable starting may be ensured.
  • a performance level of a starter device reduces when at a temperature value below the second threshold value
  • a plurality of devices may be employed in order to ensure reliable starting.
  • the controller may be operable to select first and second starter devices to start an engine when a temperature value is below the second threshold value.
  • a first starter device may be used and not a second starter device.
  • a first and a second starter device may be used.
  • the use of two starter motors allows an engine to be started with fewer turns of the engine. This has the advantage that less fuel is passed through an engine before combustion occurs and an engine starts. Thus less fuel is wasted during starting. Furthermore, an amount of undesirable hydrocarbons emitted to the atmosphere (or to which an engine after-treatment system is exposed) is reduced.
  • the temperature value may correspond to one selected from amongst an ambient temperature, a temperature of a component of a vehicle and a temperature of a fluid of a vehicle.
  • the temperature value corresponds to the temperature of a component of a vehicle and a component is a second starter device.
  • the temperature value may therefore correspond to an operating temperature of a vehicle.
  • the term operating temperature may correspond to a temperature of a portion of a vehicle such as a component or fluid such as an oil, or an ambient temperature of an environment in which a vehicle is operating.
  • the term operating temperature may be restricted to a temperature of a vehicle or component or fluid thereof and not include a direct measure of an ambient environmental temperature.
  • a vehicle having an engine and a plurality of starter devices, the vehicle comprising a controller according to the preceding aspect.
  • At least one of the starter devices is an electric machine operable to provide torque assist to one or more wheels of the vehicle when the engine is also driving the wheels.
  • Examples of electric machines operable to start an engine and provide motive torque include a crankshaft integrated starter generator (CISG), a crankshaft integrated motor generator (CIMG) and a belt integrated starter generator (BISG).
  • CISG crankshaft integrated starter generator
  • CIMG crankshaft integrated motor generator
  • BISG belt integrated starter generator
  • At least one of the starter devices is an electric machine operable to provide torque to one or more wheels of the vehicle to drive the vehicle when the engine is off.
  • the plurality of starter devices and in addition an electric machine are operable to provide torque to drive the vehicle.
  • the first starter device may comprise one selected from amongst a crankshaft integrated starter generator, a crankshaft integrated motor generator and a starter motor.
  • the second starter device may comprise one selected from amongst a belt integrated starter generator, a crankshaft integrated motor generator and a crankshaft integrated starter generator.
  • the first starter device is a conventional starter motor, optionally a twin solenoid starter (TSS) and the second starter device is one selected from amongst a BISG, a CIMG and a CISG.
  • TSS twin solenoid starter
  • the first starter device is employed to start the engine.
  • any starter may be employed as the first starter including a BISG, a CIMG, a CISG, a conventional solenoid starter or twin solenoid starter or any other suitable starter.
  • any starter may be employed as the second starter including a BISG, a CIMG, a CISG, a conventional solenoid starter or twin solenoid starter or any other suitable starter.
  • method of starting an engine of a hybrid electric vehicle having a plurality of starter devices for starting the engine comprising determining which one of the plurality of starter devices to use to start the engine responsive to a temperature value determined by a controller, the controller being operable to select a first starter device and not a second starter device when the temperature value is below a first threshold value and to select the second starter device and not the first starter device when the temperature value is above the first threshold value.
  • the method may comprise the step of selecting a plurality of starter devices to start the engine when the temperature value is below a second threshold value that is lower than the first threshold value, the plurality of starters optionally comprising the first and second starter devices.
  • the method may comprise the step of selecting the starter device responsive to a temperature value whereby the temperature value corresponds to one selected from amongst an ambient temperature, a temperature of a component of the vehicle and a temperature of a fluid of the vehicle.
  • the first starter device may be one selected from amongst a single solenoid starter motor, a twin solenoid starter motor, a crank integrated starter generator and a crank integrated motor generator and the second starter device is one selected from amongst a belt integrated starter generator, a crank integrated starter generator and a crank integrated motor generator.
  • the first starter device is a conventional starter motor, optionally a twin solenoid starter (TSS) and the second starter device is one selected from amongst a BISG, a CIMG and a CISG.
  • any starter device may be employed as the first starter depending on operating temperature characteristics of the particular device and the value of the first temperature threshold value, including a BISG, a CIMG, a CISG, a conventional solenoid starter or twin solenoid starter or any other suitable starter.
  • any starter may be employed as the second starter depending on operating temperature characteristics of the particular device and the value of the first temperature threshold value, including a BISG, a CIMG, a CISG, a conventional solenoid starter or twin solenoid starter or any other suitable starter.
  • a method of starting an engine of a hybrid electric vehicle having a plurality of starter devices for starting the engine comprising selecting one of the starter devices to start the engine responsive to an operating temperature of the vehicle.
  • the method may comprise the step of selecting a first starter device when the temperature is below a first threshold value and a second starter device when the temperature is above the first threshold value.
  • the method may comprise the step of selecting a plurality of starter devices to start the engine when the operating temperature is below a second threshold value.
  • the second threshold value may be less than the first threshold value.
  • the second threshold value may be substantially equal to the first threshold value.
  • the starter device is optionally selected responsive to the operating temperature being one selected from amongst an ambient temperature, a temperature of a component of the vehicle and a temperature of a fluid of the vehicle.
  • the method comprises the step of selecting the starter device responsive to the temperature of the second starter device.
  • the method may comprises the step of starting the engine by means of one selected from amongst a crankshaft integrated starter generator (CISG), a crankshaft integrated motor generator (CIMG) and a starter motor when the temperature is below the first threshold value.
  • CISG crankshaft integrated starter generator
  • CIMG crankshaft integrated motor generator
  • the method optionally further comprises the step of starting the engine by means of a belt integrated starter generator (BISG) when the temperature is above the first threshold value.
  • BISG belt integrated starter generator
  • a hybrid electric vehicle having a controller, an engine and an electric machine, the electric machine being operable to provide torque to one or more wheels of the vehicle to drive the vehicle, the vehicle having a plurality of starter devices, the controller being operable to determine which of the starter devices is to be used to start the engine responsive to an operating temperature of the vehicle.
  • One of the plurality of starter devices may comprise the electric machine operable to provide torque to one or more wheels of the vehicle.
  • FIGURE 1 is a schematic illustration of a hybrid electric vehicle according to an embodiment of the invention.
  • a hybrid electric vehicle 100 having an engine 121 coupled to a belt integrated starter generator (BISG) 123.
  • the BISG 123 may also be referred to as a belt integrated (or belt mounted) motor generator.
  • the BISG 123 has an electric machine 123M that is coupled to a crankshaft 121 C of the engine 121 thereby to provide torque thereto by means of a belt 123B.
  • the BISG 123 is operable to provide torque to the crankshaft 121 S when it is required to start the engine 121 or when it is required to provide torque-assist to a driveline 130.
  • torque-assist is meant that the BISG 123 can provide additional torque to the driveline 130 to drive the vehicle. This allows the amount of torque required to be developed by the engine 121 to be reduced. This in turn allows a reduction in fuel consumption and C0 2 emissions to be enjoyed.
  • this allows a smaller engine 121 to be used for a given amount of maximum required torque thereby allowing a smaller and more efficient engine 121 to be employed.
  • the crankshaft 121 C is coupled to a transmission 124 of the vehicle 100 by means of a clutch 122.
  • the transmission 124 is in turn coupled to the driveline 130 thereby to drive a pair of front wheels 1 1 1 , 1 12 and a pair of rear wheels 1 14, 1 15.
  • the driveline 130 may be arranged to drive the pair of front wheels 1 1 1 , 1 12 only or the pair of rear wheels 1 14, 1 15 only.
  • the vehicle 100 of FIG. 1 is a stop/start vehicle operable automatically to stop the engine 121 when the vehicle is stationary by a driver brake pedal during the course of a drivecycle.
  • the vehicle 100 is configured automatically to restart the engine 121 when the driver releases the brake pedal.
  • the BISG 123 is operable to provide torque assist to the driveline 130 as noted above but the vehicle 100 is not operable in an electric vehicle (EV) mode in which the vehicle is powered solely by the BISG 123 with the engine 121 switched off. Accordingly the vehicle 100 may be referred to as a 'mild hybrid electric vehicle'.
  • some embodiments of the invention are suitable for use with other types of hybrid electric vehicle such as full hybrid electric vehicles operable in an EV mode (in which an engine of the vehicle is switched off).
  • Embodiments of the invention are useful in parallel-type hybrid electric vehicles being vehicles operable in an EV mode or a parallel mode, being a mode in which an engine and an electric machine provide torque to drive the vehicle.
  • Some embodiments of the invention are suitable for use with full hybrid electric vehicles having an EV mode and a series mode in which the engine generates electrical power to power an electric machine to provide torque to one or more wheels of the vehicle, the engine not providing torque directly to the driveline.
  • the starter motor 121 S operable to start the engine 121 when required.
  • the starter motor 121 S has a drive pinion operable to engage a pinion of a starter ring gear of a flywheel of the engine 121 when it is required to start the engine 121 . This allows the starter motor to apply torque to crank the enginel 21 .
  • a solenoid of the starter motor 121 S engages a lever that displaces the drive pinion thereby to engage the starter ring gear.
  • the starter motor 121 S may be a twin solenoid starter motor (TSS) operable to crank the engine 121 whilst the engine is rotating or a conventional starter motor operable to crank the engine only from a substantially stationary condition. Other starter motors 121 S are also useful.
  • TSS twin solenoid starter motor
  • the controller 140 is arranged to be provided with a signal responsive to an ambient temperature of the environment in which the vehicle 100 is operating.
  • the controller 140 is arranged to determine whether the starter motor 121 S or the BISG 123 should be employed to start the engine 121 .
  • the BISG 123 it is generally preferable for the BISG 123 to be employed due to noise, vibration and harshness (NVH) considerations. This is because the NVH performance of the vehicle 100 is typically better when the BISG 123 is employed rather than the starter motor 121 S. However, the performance of the BISG 123 may be degraded in relatively cold ambient conditions.
  • a rate of wear of components of the BISG 123 such as belt 123B may increase above an acceptable level as temperature falls below a given temperature value.
  • NVH performance may deteriorate below that which would be experienced if the starter motor 121 S were employed instead of the BISG 123.
  • noise due to slippage of the belt of the BISG 123 in low ambient temperature conditions can become unacceptably high. Accordingly, when the engine 121 is first started in a given drive cycle the controller 140 is arranged to select only the starter motor 121 S to start the engine 121 when the ambient temperature is below a prescribed threshold level.
  • the temperature is selected to be around -10°C although other temperatures are also useful.
  • the threshold level is selected to be a temperature below which NVH performance of the vehicle 100 when started with the BISG 123 is below that of the vehicle 100 when started using the starter motor 121 S. Other conditions and other arrangements are also useful for determining the threshold level.
  • the prescribed threshold level may be higher than that at which the NVH performance of the BISG 123 is less than that of the starter motor 121 S, for example in cases where the BISG 123 has a higher minimum operating temperature specified by a manufacturer.
  • the controller 140 is configured to determine a temperature of a portion of the BISG 123 and to employ the BISG 123 to start the engine 121 only if the temperature of the portion of the BISG 123 exceeds the prescribed threshold value.
  • controller 140 may be configured to determine the temperature of the BISG 123 each time it is required to start the engine 121 within a given drivecycle.
  • the controller 140 may be configured to determine which starter device to employ each time the engine 121 is started during the course of a drivecycle responsive to the temperature. It is to be understood that if the vehicle 100 is operating in particularly cold ambient temperatures and the vehicle 100 is stationary for an extended period of time during a drivecycle with the engine off, for example in queuing traffic, the temperature of the BISG 123 may fall below the threshold value. Having a controller 140 that checks the temperature each time the engine 121 is to be started and selects an appropriate starter device 121 S, 123 is advantageous.
  • a risk that one of NVH performance or starting performance is degraded unnecessarily due to a low operating temperature may be reduced.
  • a longevity of one or more components of the vehicle such as a starter motor 121 S or BISG 123 may also be improved.
  • a BISG 123 may suffer damage or excessive wear when operated below a prescribed temperature. This may be due at least in part to an effect of temperature on a material from which the belt 123B is made, or any other component of the BISG 123 or components with which the BISG 123 interacts.
  • a number of turns of the engine 121 required to be made before the engine 121 is started may also be increased if the BISG 123 (or another starter more suitable for higher temperature operation) is employed at low temperatures. This may result in increased emissions during starting and increased fuel wastage.
  • the starter motor 121 S instead of the BISG 123, the amount of undesirable emissions and of fuel usage may be reduced.
  • the controller 140 is configured to control the vehicle 100 to start the engine 121 using the starter motor 121 S and BISG 123 together when the temperature is below a second threshold temperature lower than the first threshold described above.
  • the second threshold temperature may be in the range from around - 35°C to around -40 °C although other temperature ranges are also useful. It is to be understood that in particularly cold ambient temperatures, starting by means of the starter motor 121 S alone may not be possible or may result in excessively long crank times. By employing the BISG 123 and starter motor 121 S in such circumstances one or more of these problems may be alleviated.
  • a starter other than the second starter such as the first starter (being the starter 121 S in the present embodiment) may be employed if the operating temperature is above a high temperature threshold value being a value higher than the first threshold value. For example if the operating temperature is too high for reliable BISG 123 operation a different starter (such as starter motor 121 S) may be employed.
  • the temperature of the second starter may be too high due to operation of the second starter for extended periods in relatively high ambient temperatures. Therefore a different starter may be employed, such as the first starter.
  • Embodiments of the invention have the advantage that operation of a vehicle according to an embodiment of the invention may be enhanced by providing one or more of the advantages described above whilst operating in low temperature conditions.
  • the advantages may include faster starting, more reliable starting, reduced fuel consumption, reduced wear and reduced NVH.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Automation & Control Theory (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

L'invention porte sur une unité de commande pour un véhicule automobile (100), l'unité de commande pouvant être actionnée pour déterminer celui de plusieurs dispositifs démarreurs (121S, 123) qui doit être utilisé pour démarrer un moteur (121) du véhicule (100) en réponse à une valeur de température déterminée par le véhicule (100), l'unité de commande pouvant être utilisée pour sélectionner un premier dispositif démarreur (121S) et non pas un second dispositif démarreur (123) lorsqu'une valeur de température est inférieure à une première valeur de seuil, et un second dispositif démarreur (123) et non pas un premier dispositif démarreur (121S) lorsqu'une valeur de température est supérieure à une première valeur de seuil.
PCT/EP2011/074041 2010-12-23 2011-12-23 Unité de commande de véhicule automobile et procédé de commande d'un véhicule automobile WO2012085294A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1021839.4A GB2486708A (en) 2010-12-23 2010-12-23 Hybrid electric vehicle controller and method of controlling a hybrid electric vehicle having a plurality of starter devices
GB1021839.4 2010-12-23

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WO2012085294A1 true WO2012085294A1 (fr) 2012-06-28

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US9322378B2 (en) 2014-07-29 2016-04-26 Ford Global Technologies, Llc Methods and systems for starting an engine of a hybrid vehicle
CN107366599A (zh) * 2016-05-12 2017-11-21 株式会社电装 用于控制发动机的启动的系统
CN108223231A (zh) * 2017-12-15 2018-06-29 广州汽车集团股份有限公司 一种48v微混系统的发动机起动控制方法
US10112603B2 (en) 2016-12-14 2018-10-30 Bendix Commercial Vehicle Systems Llc Front end motor-generator system and hybrid electric vehicle operating method
CN109026488A (zh) * 2018-07-24 2018-12-18 浙江吉利控股集团有限公司 搭载bsg系统的整车起动方法、装置及控制器
US10220831B2 (en) 2016-12-14 2019-03-05 Bendix Commercial Vehicle Systems Llc Front end motor-generator system and hybrid electric vehicle operating method
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US10486690B2 (en) 2016-12-14 2019-11-26 Bendix Commerical Vehicle Systems, Llc Front end motor-generator system and hybrid electric vehicle operating method
US10532647B2 (en) 2016-12-14 2020-01-14 Bendix Commercial Vehicle Systems Llc Front end motor-generator system and hybrid electric vehicle operating method
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CN113175405A (zh) * 2021-05-11 2021-07-27 洛阳北方易初摩托车有限公司 一种用于大排量摩托车的双电启动控制方法
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DE102013001093A1 (de) * 2013-01-23 2014-07-24 Audi Ag Verfahren und System zum Anlassen eines Verbrennungsmotors eines Kraftwagens
DE102013001093B4 (de) 2013-01-23 2019-10-10 Audi Ag Verfahren und System zum Anlassen eines Verbrennungsmotors eines Kraftwagens
US9322378B2 (en) 2014-07-29 2016-04-26 Ford Global Technologies, Llc Methods and systems for starting an engine of a hybrid vehicle
CN107366599A (zh) * 2016-05-12 2017-11-21 株式会社电装 用于控制发动机的启动的系统
CN107366599B (zh) * 2016-05-12 2020-09-08 株式会社电装 用于控制发动机的启动的系统
US20190153987A1 (en) * 2016-11-22 2019-05-23 Ford Global Technologies, Llc Coordinated actuation to start an engine
US10815951B2 (en) * 2016-11-22 2020-10-27 Ford Global Technologies, Llc Coordinated actuation to start an engine
US10479180B2 (en) 2016-12-14 2019-11-19 Bendix Commercial Vehicle Systems Llc Front end motor-generator system and hybrid electric vehicle operating method
US10543833B2 (en) 2016-12-14 2020-01-28 Bendix Commercial Vehicle Systems Llc Front end motor-generator system and hybrid electric vehicle operating method
US10220830B2 (en) 2016-12-14 2019-03-05 Bendix Commercial Vehicle Systems Front end motor-generator system and hybrid electric vehicle operating method
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US10486690B2 (en) 2016-12-14 2019-11-26 Bendix Commerical Vehicle Systems, Llc Front end motor-generator system and hybrid electric vehicle operating method
US10532647B2 (en) 2016-12-14 2020-01-14 Bendix Commercial Vehicle Systems Llc Front end motor-generator system and hybrid electric vehicle operating method
US10543735B2 (en) 2016-12-14 2020-01-28 Bendix Commercial Vehicle Systems Llc Hybrid commercial vehicle thermal management using dynamic heat generator
US10239516B2 (en) 2016-12-14 2019-03-26 Bendix Commercial Vehicle Systems Llc Front end motor-generator system and hybrid electric vehicle operating method
US10589735B2 (en) 2016-12-14 2020-03-17 Bendix Commercial Vehicle Systems Llc Front end motor-generator system and hybrid electric vehicle operating method
US10589736B2 (en) 2016-12-14 2020-03-17 Bendix Commercial Vehicle Systems Llc Front end motor-generator system and hybrid electric vehicle operating method
US10630137B2 (en) 2016-12-14 2020-04-21 Bendix Commerical Vehicle Systems Llc Front end motor-generator system and modular generator drive apparatus
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CN108223231A (zh) * 2017-12-15 2018-06-29 广州汽车集团股份有限公司 一种48v微混系统的发动机起动控制方法
US10663006B2 (en) 2018-06-14 2020-05-26 Bendix Commercial Vehicle Systems Llc Polygon spring coupling
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CN109026488A (zh) * 2018-07-24 2018-12-18 浙江吉利控股集团有限公司 搭载bsg系统的整车起动方法、装置及控制器
CN112302847A (zh) * 2019-07-26 2021-02-02 罗伯特·博世有限公司 控制内燃机设备启动的方法、系统及非易失性计算机可读介质
CN113175405A (zh) * 2021-05-11 2021-07-27 洛阳北方易初摩托车有限公司 一种用于大排量摩托车的双电启动控制方法

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