EP2115295A1 - Method for starting the thermal engine of a hybrid automobile - Google Patents

Method for starting the thermal engine of a hybrid automobile

Info

Publication number
EP2115295A1
EP2115295A1 EP08762006A EP08762006A EP2115295A1 EP 2115295 A1 EP2115295 A1 EP 2115295A1 EP 08762006 A EP08762006 A EP 08762006A EP 08762006 A EP08762006 A EP 08762006A EP 2115295 A1 EP2115295 A1 EP 2115295A1
Authority
EP
European Patent Office
Prior art keywords
electric machine
engine
starting
supercapacitor
voltage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08762006A
Other languages
German (de)
French (fr)
Inventor
Stéphane Beddok
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
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 Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Publication of EP2115295A1 publication Critical patent/EP2115295A1/en
Withdrawn legal-status Critical Current

Links

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
    • 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
    • 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
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • 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
    • B60L50/40—Electric propulsion with power supplied within the vehicle using propulsion power supplied by capacitors
    • 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
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/24—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means
    • B60W10/26—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means for electrical energy, e.g. batteries or capacitors
    • 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
    • F02N11/08—Circuits or control means specially adapted for starting of engines
    • F02N11/0862—Circuits or control means specially adapted for starting of engines characterised by the electrical power supply means, e.g. battery
    • F02N11/0866—Circuits or control means specially adapted for starting of engines characterised by the electrical power supply means, e.g. battery comprising several power sources, e.g. battery and capacitor or two batteries
    • 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
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/42—Drive Train control parameters related to electric machines
    • B60L2240/425—Temperature
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/44—Drive Train control parameters related to combustion engines
    • B60L2240/445—Temperature
    • 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
    • B60L2260/00—Operating Modes
    • B60L2260/20—Drive modes; Transition between modes
    • B60L2260/26—Transition between different drive modes
    • 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
    • B60W2510/06—Combustion engines, Gas turbines
    • B60W2510/0685—Engine crank angle
    • 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
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/24—Energy storage means
    • B60W2510/242—Energy storage means for electrical energy
    • B60W2510/244—Charge state
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/24—Energy storage means
    • B60W2510/242—Energy storage means for electrical energy
    • B60W2510/246—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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/009—Electrical control of supply of combustible mixture or its constituents using means for generating position or synchronisation signals
    • F02D2041/0095—Synchronisation of the cylinders during engine shutdown
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/70—Input parameters for engine control said parameters being related to the vehicle exterior
    • F02D2200/703—Atmospheric pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/70—Input parameters for engine control said parameters being related to the vehicle exterior
    • F02D2200/703—Atmospheric pressure
    • F02D2200/704—Estimation of atmospheric pressure
    • 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
    • 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
    • F02N2011/0881—Components of the circuit not provided for by previous groups
    • F02N2011/0885—Capacitors, e.g. for additional power supply
    • 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
    • F02N2011/0881—Components of the circuit not provided for by previous groups
    • F02N2011/0888—DC/DC converters
    • 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
    • F02N2200/021—Engine crank angle
    • 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
    • F02N2200/04—Parameters used for control of starting apparatus said parameters being related to the starter motor
    • F02N2200/045—Starter temperature or parameters related to it
    • 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
    • F02N2200/04—Parameters used for control of starting apparatus said parameters being related to the starter motor
    • F02N2200/046—Energy or power necessary for starting
    • 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
    • F02N2200/064—Battery 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
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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    • Y02T10/64—Electric machine technologies in electromobility
    • 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
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    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility

Definitions

  • the present invention relates to a method of starting the engine of a hybrid motor vehicle.
  • Vehicles equipped with the functionality known as the English term "Stop and Start” are also equipped with a heat engine, which can be restarted automatically by means of an electric machine constituted by a reversible alternator, or alternator-starter.
  • the application of a reversible alternator to the "Stop and Start” operating mode consists of causing the engine to stop completely when the vehicle is itself stopped and then restarting the engine as a result of a driver action interpreted as a restart request.
  • a typical "Stop and Start” situation is that of stopping at a red light.
  • the vehicle is started, as for a traditional vehicle, by means of the starter and the battery, while restarting the engine, it uses the reversible alternator powered by the battery.
  • the engine is started by the electric machine powered by the battery, the electric machine also operating as an electric motor for the vehicle.
  • FIG. 4 is a graph representing the variations of the minimum starting voltage Udem as a function of the temperature T ° mth of the heat engine.
  • FIG. 5 is a graph showing the variations of the minimum starting voltage Udem as a function of the angular stopping position ⁇ ° vilo of the crankshaft of the heat engine.
  • FIG. 6 is a graph representing the variations of the minimum starting voltage Udem as a function of the external pressure Pext.
  • Figures 2 to 6 show how different external parameters can be taken into account by the system of Figure 1.
  • FIG. 2 shows that the minimum voltage Udem must be increased if the temperature T ° mel of the electric machine 10 increases. Indeed, increasing the temperature of an alternator increases its internal resistance and decrease its starting torque. The increase in Udem voltage compensates for this phenomenon and guarantees a quality start. As indicated in FIG. 3, the minimum voltage Udem must be increased if the temperature T ° ucap of the supercapacitors of the module 11 decreases. This is due to the fact that the drop in the temperature of the supercapacitors increases their internal resistances and contributes to lowering the starting torque. The increase in voltage also compensates for this phenomenon and guarantees a quality start.

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

Abstract

The invention relates to a system for starting the thermal engine of a hybrid automobile, that comprises an electric machine (10), at least one super-capacitor (11) for supplying said electric machine, and a circuit (20) for adjusting the charge of said super-capacitor. According to the invention, the system includes at least one sensor (41, 42, 43, 44, 45) for measuring at least one parameter defining the starting torque to be applied to the thermal engine by the electric machine (10), and a processing module (30) connected to the measurement sensor and capable of controlling said circuit (20) in order to adjust the minimal voltage (Udem) to be supplied to the electric machine based on the measure of said parameter.

Description

PROCEDE DE DEMARRAGE DU MOTEUR THERMIQUE D'UN VEHICULE METHOD FOR STARTING THE THERMAL MOTOR OF A VEHICLE
AUTOMOBILE HYBRIDEHYBRID AUTOMOTIVE
[0001] La présente invention revendique la priorité de la demande française 0753122 déposée le 07/02/2007 dont le contenu (description, revendications et dessins) est incorporé ici par référence.The present invention claims the priority of the French application 0753122 filed 07/02/2007 whose content (description, claims and drawings) is incorporated herein by reference.
[0002] La présente invention concerne un procédé de démarrage du moteur thermique d'un véhicule automobile hybride.The present invention relates to a method of starting the engine of a hybrid motor vehicle.
[0003] L'invention trouve une application avantageuse dans le domaine des véhicules automobiles hybrides, et, plus spécialement, dans celui du démarrage du moteur thermique de tels véhicules.The invention finds an advantageous application in the field of hybrid motor vehicles, and, more particularly, in that of starting the engine of such vehicles.
[0004] Les véhicules traditionnels à moteur thermique utilisent un simple démarreur alimenté par une batterie pour mettre le moteur thermique en marche. La même opération de démarrage est effectuée à chaque fois que le moteur est arrêté.[0004] Traditional vehicles with a combustion engine use a simple starter powered by a battery to start the heat engine. The same start operation is performed each time the engine is stopped.
[0005] Les véhicules équipés de la fonctionnalité connue sous le terme anglo- saxon de « Stop and Start » sont également équipés d'un moteur thermique, lequel peut être redémarré automatiquement au moyen d'une machine électrique constituée par un alternateur réversible, ou alterno-démarreur. L'application d'un alternateur réversible au mode de fonctionnement « Stop and Start » consiste à provoquer l'arrêt complet du moteur thermique lorsque le véhicule est lui-même à l'arrêt, puis à redémarrer le moteur thermique à la suite d'une action du conducteur interprétée comme une demande de redémarrage. Une situation typique de « Stop and Start » est celle de l'arrêt à un feu rouge.Vehicles equipped with the functionality known as the English term "Stop and Start" are also equipped with a heat engine, which can be restarted automatically by means of an electric machine constituted by a reversible alternator, or alternator-starter. The application of a reversible alternator to the "Stop and Start" operating mode consists of causing the engine to stop completely when the vehicle is itself stopped and then restarting the engine as a result of a driver action interpreted as a restart request. A typical "Stop and Start" situation is that of stopping at a red light.
[0006] Le démarrage du véhicule se fait, comme pour un véhicule traditionnel, au moyen du démarreur et de la batterie, alors qu'au redémarrage du moteur thermique, on utilise l'alternateur réversible alimenté par la batterie. [0007] Enfin, pour les véhicules hybrides, le démarrage du moteur thermique est effectué par la machine électrique alimentée par la batterie, la machine électrique fonctionnant par ailleurs comme moteur électrique pour le véhicule.The vehicle is started, as for a traditional vehicle, by means of the starter and the battery, while restarting the engine, it uses the reversible alternator powered by the battery. Finally, for hybrid vehicles, the engine is started by the electric machine powered by the battery, the electric machine also operating as an electric motor for the vehicle.
[0008] D'une manière générale, on sait que le couple à appliquer au moteur thermique pour obtenir un démarrage, ou rédémarrage, de qualité dépend, d'une part, du couple développé par la machine électrique et d'autre part de paramètres extérieurs comme la température du moteur thermique, la position du vilebrequin.In general, it is known that the torque to be applied to the engine to obtain a start, or restart, of quality depends, on the one hand, the torque developed by the electric machine and on the other hand of parameters external as the temperature of the engine, the position of the crankshaft.
[0009] Le couple développé par la machine électrique dépend fortement de la tension de la batterie, de la température de la batterie et de la température de la machine électrique. Cependant, le facteur principal reste la tension de la batterie, avec l'avantage que cette tension varie très peu avec l'état de charge de la batterie, de sorte que, quel que soit son état de charge, du moins dans certaines limites, la batterie est toujours en mesure de fournir à la machine électrique une tension suffisante pour démarrer ou redémarrer le moteur thermique.The torque developed by the electrical machine is highly dependent on the battery voltage, the battery temperature and the temperature of the electric machine. However, the main factor remains the voltage of the battery, with the advantage that this voltage varies very little with the state of charge of the battery, so that, whatever its state of charge, at least within certain limits, the battery is still able to provide the electrical machine with sufficient voltage to start or restart the engine.
[0010] Par ailleurs, on utilise de plus en plus dans les véhicules automobiles des sources d'énergie électrique appelées supercondensateurs, capables de délivrer des tensions continues de 30 V par exemple, supérieures à la tension de 12 V fournie en moyenne par les batteries classiques. La charge des supercondensateurs est ajustée à partir de l'alternateur ou d'un convertisseur continu/continu.Furthermore, motor vehicles are increasingly using electrical energy sources called supercapacitors, capable of delivering DC voltages of 30 V for example, higher than the voltage of 12 V supplied on average by the batteries. classics. The charge of the supercapacitors is adjusted from the alternator or a DC / DC converter.
[0011] II existe des architectures de véhicules hybrides dans laquelle la machine électrique chargée de démarrer le moteur thermique est alimentée par au moins un supercondensateur.There are hybrid vehicle architectures in which the electric machine charged to start the engine is powered by at least one supercapacitor.
[0012] Le couple développé par la machine thermique dépend principalement de la tension fournie par la source d'énergie, ici le supercondensateur. De plus, les performances au démarrage du moteur thermique sont elles-mêmes influencées par le couple de la machine électrique. On a pu constater en effet que le temps pour atteindre un régime donné au démarrage d'un moteur thermique est beaucoup plus rapide avec une tension élevée.The torque developed by the thermal machine mainly depends on the voltage supplied by the energy source, here the supercapacitor. In addition, the starting performance of the heat engine is itself influenced by the torque of the electric machine. It has been found that the time to reach a given speed when starting a heat engine is much faster with a high voltage.
[0013] En résumé, la tension de la source d'énergie est le premier des facteurs influents sur la qualité des démarrages et redémarrages des moteurs thermiques. On a vu qu'avec une batterie, la tension varie peu avec l'état de charge, alors qu'avec un supercondensateur, la tension est très dépendante de son état de charge. A titre de comparaison, si pour une batterie une diminution de 50% de l'état de charge n'entraîne qu'une diminution de moins de 10% de sa tension, la diminution de la tension correspondante pour un module de supercondensateurs peut dépasser 30%.In summary, the voltage of the power source is the first influencing factors on the quality of starting and restarting of heat engines. We have seen that with a battery, the voltage varies little with the state of charge, while with a supercapacitor, the voltage is very dependent on its state of charge. By way of comparison, if for a battery a 50% decrease in the state of charge causes only a decrease of less than 10% in its voltage, the corresponding voltage decrease for a supercapacitor module may exceed 30%. %.
[0014] Aussi, un but de l'invention est de proposer un procédé de démarrage du moteur thermique d'un véhicule automobile hybride par une machine électrique alimentée par au moins un supercondensateur, qui permettrait d'obtenir un démarrage de qualité du moteur malgré les difficultés présentées par les supercondensateurs et l'influence des paramètres extérieurs sur le couple à fournir par la machine électrique.Also, an object of the invention is to provide a method of starting the engine of a hybrid motor vehicle by an electric machine powered by at least one supercapacitor, which would obtain a quality engine start despite the difficulties presented by supercapacitors and the influence of external parameters on the torque to be supplied by the electric machine.
[0015] Ce but est atteint, selon l'invention, du fait que ledit procédé comprend une étape consistant à ajuster la tension minimale à fournir à la machine électrique par ledit supercondensateur, en fonction d'au moins un paramètre définissant le couple de démarrage à appliquer au moteur thermique par la machine électrique.This object is achieved, according to the invention, because said method comprises a step of adjusting the minimum voltage to be supplied to the electric machine by said supercapacitor, as a function of at least one parameter defining the starting torque. to be applied to the engine by the electric machine.
[0016] Selon l'invention, ledit paramètre est choisi dans la liste suivante : température de la machine électrique, température du supercondensateur, température du moteur thermique, position angulaire d'arrêt du vilebrequin du moteur thermique, pression extérieure, performances des organes.According to the invention, said parameter is selected from the following list: temperature of the electric machine, supercapacitor temperature, engine temperature, angular position of the crankshaft of the engine, external pressure, performance of the organs.
[0017] On comprend ainsi que les échecs de démarrage imputables à des conditions extrêmes, comme une température très élevée de la machine électrique, peuvent être évités. Il en résulte par ailleurs que le dimensionnement des différents organes peut être simplifié.It is thus understood that the boot failures attributable to extreme conditions, such as a very high temperature of the machine electric, can be avoided. It also results that the dimensioning of the various members can be simplified.
[0018] L'invention concerne également un système de démarrage du moteur thermique d'un véhicule automobile hybride, comprenant une machine électrique, au moins un supercondensateur destiné à alimenter ladite machine électrique et un circuit d'ajustement de la charge dudit supercondensateur, remarquable en ce que ledit système comprend au moins un capteur de mesure d'au moins un paramètre définissant le couple de démarrage à appliquer au moteur thermique par la machine électrique, et un module de traitement relié audit capteur de mesure et apte à commander ledit circuit d'ajustement de la charge du supercondensateur de manière à ajuster la tension minimale à fournir à la machine électrique en fonction de la mesure dudit paramètre.The invention also relates to a starting system of the heat engine of a hybrid motor vehicle, comprising an electric machine, at least one supercapacitor for supplying said electric machine and a charge adjustment circuit of said supercapacitor, remarkable in that said system comprises at least one sensor for measuring at least one parameter defining the starting torque to be applied to the heat engine by the electric machine, and a processing module connected to said measurement sensor and able to control said circuit adjusting the charge of the supercapacitor so as to adjust the minimum voltage to be supplied to the electric machine according to the measurement of said parameter.
[0019] La description qui va suivre en regard des dessins annexés, donnés à titre d'exemples non limitatifs, fera bien comprendre en quoi consiste l'invention et comment elle peut être réalisée.The following description with reference to the accompanying drawings, given by way of non-limiting examples, will explain in what the invention is and how it can be achieved.
[0020] La figure 1 est un schéma d'un système de démarrage d'un moteur thermique d'un véhicule hybride, conforme à l'invention.Figure 1 is a diagram of a starting system of a heat engine of a hybrid vehicle according to the invention.
[0021] La figure 2 est un graphe représentant les variations de la tension minimale Udem de démarrage en fonction de la température T°mel de la machine électrique.FIG. 2 is a graph showing the variations of the minimum starting voltage Udem as a function of the temperature T ° mel of the electric machine.
[0022] La figure 3 est un graphe représentant les variations de la tension minimale Udem de démarrage en fonction de la température T°ucap du supercondensateur.FIG. 3 is a graph showing the variations of the minimum starting voltage Udem as a function of the temperature T ° ucap of the supercapacitor.
[0023] La figure 4 est un graphe représentant les variations de la tension minimale Udem de démarrage en fonction de la température T°mth du moteur thermique. [0024] La figure 5 est un graphe représentant les variations de la tension minimale Udem de démarrage en fonction de la position angulaire d'arrêt α°vilo du vilebrequin du moteur thermique.FIG. 4 is a graph representing the variations of the minimum starting voltage Udem as a function of the temperature T ° mth of the heat engine. FIG. 5 is a graph showing the variations of the minimum starting voltage Udem as a function of the angular stopping position α ° vilo of the crankshaft of the heat engine.
[0025] La figure 6 est un graphe représentant les variations de la tension minimale Udem de démarrage en fonction de la pression extérieure Pext.FIG. 6 is a graph representing the variations of the minimum starting voltage Udem as a function of the external pressure Pext.
[0026] Sur la figure 1 est représenté un système de démarrage du moteur thermique, non représenté, d'un véhicule automobile hybride par une machine électrique 10 alimentée par un module 1 1 de supercondensateurs. Un convertisseur 20 continu/continu ajuste la charge du module 1 1 de supercondensateurs à partir de la batterie 21 du véhicule.In Figure 1 is shown a starting system of the engine, not shown, of a hybrid motor vehicle by an electric machine 10 powered by a module 1 1 of supercapacitors. A DC / DC converter adjusts the charge of the module 1 1 of supercapacitors from the battery 21 of the vehicle.
[0027] Comme le montre la figure 1 , le convertisseur 20 est commandé par un module 30 apte à traiter les données provenant d'un ensemble de capteurs 41 , 42, 43, 44, 45 de mesure d'une pluralité de paramètres définissant le couple de démarrage que la machine électrique 10 doit appliquer au moteur thermique pour obtenir un démarrage de qualité.As shown in Figure 1, the converter 20 is controlled by a module 30 adapted to process the data from a set of sensors 41, 42, 43, 44, 45 for measuring a plurality of parameters defining the starting torque that the electric machine 10 must apply to the engine for a quality start.
[0028] A cet effet, le module 30 de traitement prend en compte les informations fournies par les différents capteurs 41 , 42, 43, 44, 45 et commande le convertisseur 20 en conséquence de manière à ajuster la tension minimale Udem de démarrage que le module 1 1 de supercondensateurs doit fournir à la machine électrique 10.For this purpose, the processing module 30 takes into account the information provided by the different sensors 41, 42, 43, 44, 45 and controls the converter 20 accordingly to adjust the minimum voltage Udem start that the module 1 1 supercapacitors must provide to the electric machine 10.
[0029] Les figures 2 à 6 montrent comment différents paramètres extérieurs peuvent être pris en compte par le système de la figure 1.Figures 2 to 6 show how different external parameters can be taken into account by the system of Figure 1.
[0030] La figure 2 montre que la tension minimale Udem doit être augmentée si la température T°mel de la machine électrique 10 augmente. En effet, l'augmentation de la température d'un alternateur fait croître sa résistance interne et diminuer son couple de démarrage. L'augmentation de la tension Udem vient compenser ce phénomène et garantir un démarrage de qualité. [0031] Comme l'indique la figure 3, la tension minimale Udem doit être augmentée si la température T°ucap des supercondensateurs du module 11 diminue. Ceci est dû au fait que la baisse de la température des supercondensateurs fait croître leurs résistances internes et contribue à abaisser le couple de démarrage. L'augmentation de la tension vient également compenser ce phénomène et garantir un démarrage de qualité.[0030] Figure 2 shows that the minimum voltage Udem must be increased if the temperature T ° mel of the electric machine 10 increases. Indeed, increasing the temperature of an alternator increases its internal resistance and decrease its starting torque. The increase in Udem voltage compensates for this phenomenon and guarantees a quality start. As indicated in FIG. 3, the minimum voltage Udem must be increased if the temperature T ° ucap of the supercapacitors of the module 11 decreases. This is due to the fact that the drop in the temperature of the supercapacitors increases their internal resistances and contributes to lowering the starting torque. The increase in voltage also compensates for this phenomenon and guarantees a quality start.
[0032] Conformément à la figure 4, une diminution de la tension minimale Udem doit accompagner une augmentation de la température T°mth du moteur thermique. L'augmentation de la température du moteur a pour effet de diminuer ses frottements et facilite ainsi le démarrage. L'abaissement de la tension Udem permet, tout en garantissant toujours un démarrage de qualité, d'utiliser les supercondensateurs sur une plage de tension plus large et d'augmenter ainsi le gain en consommation.According to Figure 4, a decrease of the minimum voltage Udem must accompany an increase in temperature T ° mth of the engine. The increase in engine temperature has the effect of reducing its friction and thus facilitates starting. By lowering the Udem voltage, it is always possible to ensure that the supercapacitors are used over a wider voltage range, thus increasing the gain in consumption.
[0033] La figure 5 montre que la tension minimale Udem doit être modifiée selon la position angulaire d'arrêt α°vilo du vilebrequin du moteur thermique. En fonction de la position d'arrêt, l'enchaînement des phases de compression et de détente des pistons se fait à des niveaux différents, le couple résistant du moteur est ainsi modifié. On ajustera la tension Udem de démarrage pour compenser ce phénomène et garantir un démarrage de qualité.[0033] FIG. 5 shows that the minimum voltage Udem must be modified according to the angular stopping position α ° vilo of the crankshaft of the heat engine. Depending on the stopping position, the sequencing of the compression and expansion phases of the pistons is done at different levels, the engine resistant torque is thus modified. We will adjust the starting voltage Udem to compensate for this phenomenon and ensure a quality start.
[0034] Enfin, on peut voir sur la figure 6 que la tension minimale Udem doit être modifiée selon la pression extérieure Pext, ou la pression d'admission du moteur ou l'altitude du véhicule. La diminution de la pression d'admission réduit la masse d'air qui entre dans les cylindres (baisse de la masse volumique) et augmente la montée en pression dans la rampe commune, ce qui provoque un allongement du temps de démarrage. On doit donc augmenter la tension Udem de démarrage pour compenser ce phénomène et garantir un démarrage de qualité. [0035] On notera qu'il est également possible d'ajuster Udem avec le vieillissement des organes et la dégradation de leurs performances en fonction de la durée de vie du véhicule. Les organes étant capables de diagnostiquer leurs propres performances, on augmentera la tension Udem en fonction de la dégradation de ces dernières. Finally, we can see in Figure 6 that the minimum voltage Udem must be changed according to the external pressure Pext, or the engine intake pressure or the vehicle altitude. The decrease of the intake pressure reduces the air mass entering the cylinders (lower density) and increases the pressure rise in the common rail, which causes an increase in the starting time. It is therefore necessary to increase the starting voltage Udem to compensate for this phenomenon and to guarantee a quality start. It will be noted that it is also possible to adjust Udem with the aging of the organs and the degradation of their performance as a function of the life of the vehicle. The organs being able to diagnose their own performance, Udem voltage will be increased depending on the degradation of the latter.

Claims

REVENDICATIONS
1. Procédé de démarrage du moteur thermique d'un véhicule automobile hybride par une machine électrique (10) alimentée par au moins un supercondensateur (1 1 ), caractérisé en ce que ledit procédé comprend une étape consistant à ajuster la tension minimale (Udem) à fournir à la machine électrique par ledit supercondensateur, en fonction de la position angulaire d'arrêt du vilebrequin du moteur thermique.1. A method for starting the engine of a hybrid motor vehicle by an electric machine (10) powered by at least one supercapacitor (1 1), characterized in that said method comprises a step of adjusting the minimum voltage (Udem) to provide to the electric machine by said supercapacitor, depending on the angular position of stopping the crankshaft of the engine.
2. Procédé selon la revendication 1 , caractérisé en ce que la tension minimale est également ajustée en fonction d'au moins un autre paramètre définissant le couple de démarrage à appliquer au moteur thermique par la machine électrique, ledit paramètre choisi dans la liste suivante : température de la machine électrique, température du supercondensateur, température du moteur thermique, pression extérieure, performances des organes.2. Method according to claim 1, characterized in that the minimum voltage is also adjusted according to at least one other parameter defining the starting torque to be applied to the heat engine by the electric machine, said parameter chosen from the following list: temperature of the electric machine, temperature of the supercapacitor, temperature of the heat engine, external pressure, performance of the organs.
3. Système de démarrage du moteur thermique d'un véhicule automobile hybride, comprenant une machine électrique (10), au moins un supercondensateur (1 1 ) destiné à alimenter ladite machine électrique et un circuit (20) d'ajustement de la charge dudit supercondensateur, caractérisé en ce que ledit système comprend au moins un capteur (41 , 42, 43, 44, 45) de mesure de la position angulaire d'arrêt du vilebrequin du moteur thermique définissant le couple de démarrage à appliquer au moteur thermique par la machine électrique (10), et un module (30) de traitement relié audit capteur de mesure et apte à commander ledit circuit (20) de manière à ajuster la tension minimale (Udem) à fournir à la machine électrique en fonction de la mesure de la position angulaire d'arrêt du vilebrequin du moteur thermique. 3. Hybrid motor vehicle engine starting system comprising an electric machine (10), at least one supercapacitor (1 1) for powering said electric machine and a load adjusting circuit (20) of said supercapacitor, characterized in that said system comprises at least one sensor (41, 42, 43, 44, 45) for measuring the angular stopping position of the crankshaft of the heat engine defining the starting torque to be applied to the heat engine by the an electric machine (10), and a processing module (30) connected to said measuring sensor and adapted to control said circuit (20) so as to adjust the minimum voltage (Udem) to be supplied to the electric machine according to the measurement of the angular position of stopping of the crankshaft of the heat engine.
EP08762006A 2007-02-07 2008-01-30 Method for starting the thermal engine of a hybrid automobile Withdrawn EP2115295A1 (en)

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FR0753122A FR2912190B1 (en) 2007-02-07 2007-02-07 METHOD FOR STARTING THE THERMAL MOTOR OF A HYBRID MOTOR VEHICLE
PCT/FR2008/050146 WO2008110716A1 (en) 2007-02-07 2008-01-30 Method for starting the thermal engine of a hybrid automobile

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