EP3063401B1 - Motor vehicle with improved restarting - Google Patents

Motor vehicle with improved restarting Download PDF

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Publication number
EP3063401B1
EP3063401B1 EP14793225.5A EP14793225A EP3063401B1 EP 3063401 B1 EP3063401 B1 EP 3063401B1 EP 14793225 A EP14793225 A EP 14793225A EP 3063401 B1 EP3063401 B1 EP 3063401B1
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European Patent Office
Prior art keywords
engine
temperature
computer
value
motor vehicle
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EP14793225.5A
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German (de)
French (fr)
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EP3063401A1 (en
Inventor
Mehdi Besseghair
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PSA Automobiles SA
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PSA Automobiles SA
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/04—Starting of engines by means of electric motors the motors being associated with current generators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • 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
    • F02N2200/12—Parameters used for control of starting apparatus said parameters being related to the vehicle exterior
    • F02N2200/122—Atmospheric temperature

Definitions

  • the invention relates to stopping and restarting the combustion engines of motor vehicles, in particular when the latter are repetitive, as in the case of vehicles with automatic engine shutdown when the vehicle stops moving.
  • Such vehicles are known under the Anglo-American name of “STT” for “Stop and Start” or “to stop and start” in French.
  • the aim of the invention is to provide a vehicle in which a reliable temperature value of the rotating machine is available in the vehicle when the latter is restarted.
  • An additional aim of the invention is to provide such a vehicle in which this value is obtained by means which are inexpensive and simple to implement.
  • a motor vehicle comprising a combustion engine, an engine computer configured to control at least one combustion parameter of the engine, a rotating electrical machine which rotating electrical machine is a machine for driving the rotation of the engine.
  • combustion engine on start-up and comprises a sensor measuring a temperature of the rotary electrical machine, characterized in that the temperature sensor and the engine computer are configured such that when the combustion engine is switched off the temperature sensor supplies the engine computer a temperature value of the rotating electrical machine and the engine computer estimates a temperature value of the rotating electrical machine reached by the rotating electrical machine when the combustion engine is restarted by said rotating electrical machine after said switching off the combustion engine using p for this estimate the temperature of the rotating electrical machine when the combustion engine is switched off.
  • the engine computer is configured to estimate the value on restarting of the temperature of the rotating electrical machine by using a value for the duration of the combustion engine being switched off.
  • the vehicle comprises a vehicle computer (6) controlling at least one parameter of a component of the vehicle which component is distinct from the combustion engine and the vehicle computer is configured to provide the value for the duration of the combustion engine being extinguished. engine control unit.
  • the engine computer is configured to estimate the value on restarting of the temperature of the rotating electrical machine by using an ambient temperature value.
  • the vehicle comprises a vehicle computer controlling at least one parameter of a component of the vehicle which component is distinct from the combustion engine and the vehicle computer is configured to supply the ambient temperature value to the engine computer.
  • the engine computer is configured to store at least one value indicative of a thermal behavior of the rotating electrical machine and to establish from this value a law of temperature decrease of the rotating electrical machine as a function of time.
  • the engine computer and the rotating electrical machine are configured so that the engine computer supplies the estimated temperature to the rotating electrical machine when the vehicle is restarted.
  • the rotating electrical machine comprises a stator and the estimated temperature value of the rotating electrical machine as well as the temperature value of the rotating electrical machine when the combustion engine is switched off are temperature values of the stator of the electrical machine. rotating.
  • the rotating electrical machine is an alternator-starter.
  • the accompanying figure shows an alternator-starter 1 and an engine block 2.
  • the alternator-starter 1 is provided with a temperature sensor 3 which takes the temperature of the stator of the alternator-starter.
  • An engine computer 4 controls the engine combustion parameters and in particular the quantity of fuel supplied to the combustion chambers during each engine cycle.
  • the engine computer 4 is connected to the stator temperature sensor 3 by a link 5 such that the stator temperature is supplied to the engine computer 4 in particular when the vehicle is in operation.
  • a vehicle computer 6, also called BSI for “intelligent service box” is fitted to the present vehicle, the role of which vehicle computer 6 is to control a certain number of vehicle components which are distinct from the combustion engine, and also to take samples. operating data of certain components of the vehicle other than the engine, such as air conditioning, lighting and battery units.
  • the alternator-starter 1 continuously sends the temperature of the stator to the engine computer 4 and to the vehicle computer 6.
  • the link 5 represented by a single line here symbolizes a LIN / CAN network of the vehicle for “Local Interconnect Network / Controller Area Network” according to the Anglo-American phrase corresponding to “local interconnection network / controller area network” in French .
  • the starter-alternator 1 therefore sends this temperature value continuously to the engine computer 4 and to the vehicle computer 6 via the LIN / CAN network.
  • the alternator -starter 1 sends the last temperature information in the last LIN / CAN frame, before stopping.
  • the engine computer 4 stores this information in the form of a mirror temperature throughout the vehicle's standby phase, which mirror temperature will be used when the vehicle is restarted.
  • the memory of the engine computer 4 is used here to store the last temperature of the alternator-starter 1 rather than redesigning an alternator-starter with its own memory.
  • the computers 4 and 6 are reset and the engine computer 4 requests certain information to the vehicle computer 6, such as the ambient temperature and the vehicle's time to fall asleep, which is information available in the vehicle computer 6.
  • the engine computer 4 uses this information to calculate an estimated temperature of the stator of the alternator-starter 1. This calculation here takes into account the thermal parameters of the alternator-starter 1 including for example its thermal resistivity and the type of metal that constitutes it. The engine computer 4 establishes from these parameters a thermal decrease curve of the stator of the alternator-starter 1 over time. The calculated temperature is then sent to the alternator-starter 1 in the first wake-up frame of the LIN / CAN network symbolized by link 5
  • the engine computer 4 therefore uses the temperature stored when the vehicle is stationary as well as the information supplied by the vehicle computer 6 when the vehicle is restarted to calculate an estimated temperature of the stator.
  • the engine ECU 4 then sends this estimated temperature to the alternator-starter 1.
  • the alternator-starter 1 uses this temperature updated by the engine ECU 4 as a reference to continue to continuously estimate its temperature and send the information of temperature at motor controller 4.
  • the memory of the engine computer 4 is used here to save one or more parameters including the temperature of the alternator-starter 1 before the vehicle is stopped.
  • a theoretical temperature is estimated in the engine computer 4 during restarting in order to serve as a reference for the alternator-starter 1 when it is started up.
  • the apparatus of which the temperature is stored is a rotary electric machine for driving the combustion engine for the purposes of starting the latter, such as an alternator-starter or a reversible alternator.
  • the temperature of a rotating electric machine is stored and estimated, which may be of another nature, such as an electric motor for propelling the vehicle, an electric motor for power steering, or even an electric air conditioning motor.
  • such a device makes it possible to solve the problem of the absence of read only memory or ROM memory for Read Only Memory according to the Anglo-American expression on such rotating machines. It is of course possible to add memory to the rotating machine, but for reasons of cost, such a solution is of limited interest compared to the device described here which is based on a modification of the programming of the engine ECU.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Description

L'invention concerne l'arrêt et le redémarrage des moteurs à combustion de véhicules automobiles, notamment lorsque ceux-ci sont répétitifs comme dans le cas des véhicules à arrêt automatique du moteur lors des arrêts de déplacement du véhicule. De tels véhicules sont connus sous l'appellation anglo-américaine de « STT » pour « Stop and Start » ou « à arrêt et démarrage » en français.The invention relates to stopping and restarting the combustion engines of motor vehicles, in particular when the latter are repetitive, as in the case of vehicles with automatic engine shutdown when the vehicle stops moving. Such vehicles are known under the Anglo-American name of “STT” for “Stop and Start” or “to stop and start” in French.

Il est connu par exemple du document US7631626B1 de démarrer un moteur avec une machine électrique tournante, désignée démarreur. Pour un véhicule STT, lorsque le moteur est éteint, le véhicule entre en phase d'arrêt. Une telle phase d'arrêt est suivie d'un redémarrage à l'aide d'une machine électrique tournante telle qu'un alterno-démarreur ou encore un alternateur réversible. Afin de garantir une prestation optimale, les calculateurs véhicule nécessitent d'avoir en permanence certains paramètres de la machine tournante afin de vérifier sa fonctionnalité. Aujourd'hui, certains paramètres comme la température sont transmis par les calculateurs véhicule en récupérant cette information de température directement auprès de la machine tournante. Du fait que les machines tournantes ne disposent pas de mémoire, les paramètres de la machine tournante se réinitialisent à chaque phase d'arrêt du véhicule et l'information de température obtenue au redémarrage par le calculateur véhicule auprès de la machine tournante est une information erronée.It is known for example from the document US7631626B1 to start an engine with a rotating electrical machine, referred to as a starter. For an STT vehicle, when the engine is off, the vehicle enters the stop phase. Such a stopping phase is followed by a restart using a rotating electrical machine such as an alternator-starter or even a reversible alternator. In order to guarantee optimum performance, vehicle computers require certain parameters of the rotating machine to be permanently available in order to check its functionality. Today, certain parameters such as temperature are transmitted by vehicle computers by retrieving this temperature information directly from the rotating machine. Due to the fact that the rotating machines have no memory, the parameters of the rotating machine are reset each time the vehicle is stopped and the temperature information obtained when the vehicle computer is restarted from the rotating machine is incorrect information. .

Le but de l'invention est de proposer un véhicule dans lequel une valeur fiable de température de la machine tournante soit disponible dans le véhicule au redémarrage de ce dernier. Un but additionnel de l'invention est de proposer un tel véhicule dans lequel cette valeur soit obtenue par des moyens qui soient peu coûteux et de mise en œuvre simple.The aim of the invention is to provide a vehicle in which a reliable temperature value of the rotating machine is available in the vehicle when the latter is restarted. An additional aim of the invention is to provide such a vehicle in which this value is obtained by means which are inexpensive and simple to implement.

Ces buts sont atteints selon l'invention grâce à un véhicule automobile comprenant un moteur à combustion un calculateur moteur configuré pour piloter au moins un paramètre de combustion du moteur, une machine électrique tournante laquelle machine électrique tournante est une machine d'entrainement en rotation du moteur à combustion au démarrage et comprend un capteur mesurant une température de la machine électrique tournante, caractérisé en ce que le capteur de température et le calculateur moteur sont configurés de telle sorte qu'à une extinction du moteur à combustion le capteur de température fournit au calculateur moteur une valeur de température de la machine électrique tournante et le calculateur moteur réalise une estimation d'une valeur de température de la machine électrique tournante atteinte par la machine électrique tournante à un redémarrage du moteur à combustion par ladite machine électrique tournante postérieur à ladite extinction du moteur à combustion en utilisant pour cette estimation la température de la machine électrique tournante à l'extinction du moteur à combustion.These aims are achieved according to the invention thanks to a motor vehicle comprising a combustion engine, an engine computer configured to control at least one combustion parameter of the engine, a rotating electrical machine which rotating electrical machine is a machine for driving the rotation of the engine. combustion engine on start-up and comprises a sensor measuring a temperature of the rotary electrical machine, characterized in that the temperature sensor and the engine computer are configured such that when the combustion engine is switched off the temperature sensor supplies the engine computer a temperature value of the rotating electrical machine and the engine computer estimates a temperature value of the rotating electrical machine reached by the rotating electrical machine when the combustion engine is restarted by said rotating electrical machine after said switching off the combustion engine using p for this estimate the temperature of the rotating electrical machine when the combustion engine is switched off.

Avantageusement, le calculateur moteur est configuré pour estimer la valeur au redémarrage de la température de la machine électrique tournante en utilisant une valeur de durée d'extinction du moteur à combustion.Advantageously, the engine computer is configured to estimate the value on restarting of the temperature of the rotating electrical machine by using a value for the duration of the combustion engine being switched off.

Avantageusement, le véhicule comprend un calculateur véhicule (6) pilotant au moins un paramètre d'un organe du véhicule lequel organe est distinct du moteur à combustion et le calculateur véhicule est configuré pour fournir la valeur de durée d'extinction du moteur à combustion au calculateur moteur.Advantageously, the vehicle comprises a vehicle computer (6) controlling at least one parameter of a component of the vehicle which component is distinct from the combustion engine and the vehicle computer is configured to provide the value for the duration of the combustion engine being extinguished. engine control unit.

Avantageusement, le calculateur moteur est configuré pour estimer la valeur au redémarrage de la température de la machine électrique tournante en utilisant une valeur de température ambiante.Advantageously, the engine computer is configured to estimate the value on restarting of the temperature of the rotating electrical machine by using an ambient temperature value.

Avantageusement, le véhicule comprend un calculateur véhicule pilotant au moins un paramètre d'un organe du véhicule lequel organe est distinct du moteur à combustion et le calculateur véhicule est configuré pour fournir la valeur de température ambiante au calculateur moteur.Advantageously, the vehicle comprises a vehicle computer controlling at least one parameter of a component of the vehicle which component is distinct from the combustion engine and the vehicle computer is configured to supply the ambient temperature value to the engine computer.

Avantageusement, le calculateur moteur est configuré pour mémoriser au moins une valeur indicative d'un comportement thermique de la machine électrique tournante et établir à partir de cette valeur une loi de décroissance de température de la machine électrique tournante en fonction du temps.Advantageously, the engine computer is configured to store at least one value indicative of a thermal behavior of the rotating electrical machine and to establish from this value a law of temperature decrease of the rotating electrical machine as a function of time.

Avantageusement, le calculateur moteur et la machine électrique tournante sont configurés pour que le calculateur moteur fournisse au redémarrage du véhicule la température estimée à la machine électrique tournante.Advantageously, the engine computer and the rotating electrical machine are configured so that the engine computer supplies the estimated temperature to the rotating electrical machine when the vehicle is restarted.

Avantageusement, la machine électrique tournante comporte un stator et la valeur estimée de température de la machine électrique tournante ainsi que la valeur de température de la machine électrique tournante à l'extinction du moteur à combustion sont des valeurs de température du stator de la machine électrique tournante.Advantageously, the rotating electrical machine comprises a stator and the estimated temperature value of the rotating electrical machine as well as the temperature value of the rotating electrical machine when the combustion engine is switched off are temperature values of the stator of the electrical machine. rotating.

Avantageusement, la machine électrique tournante est un alterno-démarreur.Advantageously, the rotating electrical machine is an alternator-starter.

D'autres caractéristiques, buts et avantages de l'invention apparaitront à la lecture de la description qui va suivre, faite en référence à la figure unique annexée, qui représente un ensemble de propulsion et de démarrage d'un véhicule automobile selon l'invention.Other characteristics, aims and advantages of the invention will become apparent on reading the description which follows, given with reference to the single appended figure, which represents a propulsion and starting assembly of a motor vehicle according to the invention. .

On a représenté sur la figure annexée un alterno-démarreur 1 et un bloc moteur 2. L'alterno-démarreur 1 est muni d'un capteur de température 3 lequel prélève la température du stator de l'alterno-démarreur. Un calculateur moteur 4 pilote les paramètres de combustion du moteur et notamment la quantité de carburant approvisionnée aux chambres de combustion à chaque cycle moteur.The accompanying figure shows an alternator-starter 1 and an engine block 2. The alternator-starter 1 is provided with a temperature sensor 3 which takes the temperature of the stator of the alternator-starter. An engine computer 4 controls the engine combustion parameters and in particular the quantity of fuel supplied to the combustion chambers during each engine cycle.

Le calculateur moteur 4 est connecté au capteur de température de stator 3 par une liaison 5 de telle sorte que la température de stator est fournie au calculateur moteur 4 notamment lorsque le véhicule est en fonctionnement. Un calculateur véhicule 6, également appelé BSI pour « boitier de servitude intelligent» équipe le présent véhicule, lequel calculateur véhicule 6 a pour rôle de piloter un certain nombre d'organes du véhicules qui sont distincts du moteur à combustion, et également de prélever des données de fonctionnement de certains organes du véhicule autres que le moteur, tels qu'organes de climatisation, d'éclairage, batterie. Ainsi, à moteur tournant, l'alterno-démarreur 1 envoie en permanence au calculateur moteur 4 et au calculateur véhicule 6 la température du stator. La liaison 5 représentée par un trait simple symbolise ici un réseau LIN/CAN du véhicule pour «Local Interconnect Network / Controller Area Network » selon la locution anglo-américaine correspondant à « réseau d'interconnexion locale / réseau de zone à contrôleur » en français. L'alterno-démarreur 1 envoie donc cette valeur de température en continu au calculateur moteur 4 et au calculateur véhicule 6 via le réseau LIN/CAN.The engine computer 4 is connected to the stator temperature sensor 3 by a link 5 such that the stator temperature is supplied to the engine computer 4 in particular when the vehicle is in operation. A vehicle computer 6, also called BSI for “intelligent service box” is fitted to the present vehicle, the role of which vehicle computer 6 is to control a certain number of vehicle components which are distinct from the combustion engine, and also to take samples. operating data of certain components of the vehicle other than the engine, such as air conditioning, lighting and battery units. Thus, with the engine running, the alternator-starter 1 continuously sends the temperature of the stator to the engine computer 4 and to the vehicle computer 6. The link 5 represented by a single line here symbolizes a LIN / CAN network of the vehicle for “Local Interconnect Network / Controller Area Network” according to the Anglo-American phrase corresponding to “local interconnection network / controller area network” in French . The starter-alternator 1 therefore sends this temperature value continuously to the engine computer 4 and to the vehicle computer 6 via the LIN / CAN network.

Lors d'un arrêt du véhicule, que cet arrêt soit dû à un arrêt automatique du moteur à combustion en réponse à une immobilisation physique du véhicule, ou qu'il soit dû à une extinction à la commande manuelle par le conducteur, l'alterno-démarreur 1 envoie une dernière information de température dans la dernière trame LIN/CAN, avant de se mettre à l'arrêt. Le calculateur moteur 4 mémorise cette information sous forme d'une température miroir durant toute la phase de veille du véhicule, laquelle température miroir va être mise à profit lors du redémarrage du véhicule. Ainsi on utilise ici la mémoire du calculateur moteur 4 pour mémoriser la dernière température de l'alterno-démarreur 1 plutôt que de reconcevoir un alterno-démarreur avec une mémoire propre.When the vehicle is stopped, whether this stop is due to an automatic shutdown of the combustion engine in response to a physical immobilization of the vehicle, or whether it is due to an extinction at manual control by the driver, the alternator -starter 1 sends the last temperature information in the last LIN / CAN frame, before stopping. The engine computer 4 stores this information in the form of a mirror temperature throughout the vehicle's standby phase, which mirror temperature will be used when the vehicle is restarted. Thus, the memory of the engine computer 4 is used here to store the last temperature of the alternator-starter 1 rather than redesigning an alternator-starter with its own memory.

Au redémarrage du véhicule, soit par redémarrage automatique au moyen de l'alterno-démarreur 1 soit par redémarrage à la commande manuelle de redémarrage par le conducteur au moyen d'un démarreur, les calculateurs 4 et 6 se réinitialisent et le calculateur moteur 4 demande au calculateur véhicule 6 certaines informations comme la température ambiante et le temps d'endormissement du véhicule, lesquelles sont des informations disponibles dans le calculateur véhicule 6.When the vehicle is restarted, either by automatic restart by means of the alternator-starter 1 or by restarting with the manual restart command by the driver by means of a starter, the computers 4 and 6 are reset and the engine computer 4 requests certain information to the vehicle computer 6, such as the ambient temperature and the vehicle's time to fall asleep, which is information available in the vehicle computer 6.

Le calculateur moteur 4 utilise ces informations pour calculer une température estimée du stator de l'alterno-démarreur 1. Ce calcul prend ici en compte les paramètres thermiques de l'alterno-démarreur 1 incluant par exemple sa résistivité thermique et le type de métal qui le constitue. Le calculateur moteur 4 établit à partir de ces paramètres une courbe de décroissance thermique du stator de l'alterno-démarreur 1 dans le temps. La température calculée est ensuite envoyée à l'alterno-démarreur 1 dans la première trame de réveil du réseau LIN/CAN symbolisé par la liaison 5The engine computer 4 uses this information to calculate an estimated temperature of the stator of the alternator-starter 1. This calculation here takes into account the thermal parameters of the alternator-starter 1 including for example its thermal resistivity and the type of metal that constitutes it. The engine computer 4 establishes from these parameters a thermal decrease curve of the stator of the alternator-starter 1 over time. The calculated temperature is then sent to the alternator-starter 1 in the first wake-up frame of the LIN / CAN network symbolized by link 5

Le calculateur moteur 4 utilise donc la température mémorisée à l'arrêt du véhicule ainsi que les informations fournies par le calculateur véhicule 6 au redémarrage du véhicule pour calculer une température estimée du stator. Le calculateur moteur 4 envoie ensuite cette température estimée à l'alterno-démarreur 1. L'alterno-démarreur 1 utilise cette température mise à jour par le calculateur moteur 4 comme référence pour continuer à estimer en continu sa température et envoyer l'information de température au contrôleur moteur 4.The engine computer 4 therefore uses the temperature stored when the vehicle is stationary as well as the information supplied by the vehicle computer 6 when the vehicle is restarted to calculate an estimated temperature of the stator. The engine ECU 4 then sends this estimated temperature to the alternator-starter 1. The alternator-starter 1 uses this temperature updated by the engine ECU 4 as a reference to continue to continuously estimate its temperature and send the information of temperature at motor controller 4.

Ainsi, on utilise ici la mémoire du calculateur moteur 4 pour sauvegarder un ou plusieurs paramètres dont la température de l'alterno-démarreur 1 avant la mise à l'arrêt du véhicule. De plus, on estime dans le calculateur moteur 4 une température théorique lors du redémarrage afin de servir de référence pour l'alterno-démarreur 1 lors de sa mise en route.Thus, the memory of the engine computer 4 is used here to save one or more parameters including the temperature of the alternator-starter 1 before the vehicle is stopped. In addition, a theoretical temperature is estimated in the engine computer 4 during restarting in order to serve as a reference for the alternator-starter 1 when it is started up.

On a décrit ici un mode de réalisation dans lequel l'appareillage dont on mémorise la température est une machine électrique tournante d'entrainement du moteur à combustion aux fins de démarrage de celui-ci, tel qu'un alterno-démarreur ou un alternateur réversible. En variante, on mémorise et estime la température d'une machine électrique tournante qui peut être d'une autre nature, telle qu'un moteur électrique de propulsion du véhicule, un moteur électrique de direction assistée, ou encore un moteur électrique de climatisation. Dans de tels cas également, un tel dispositif permet de résoudre le problème de l'absence de mémoire morte ou mémoire ROM pour Read Only Memory selon la locution anglo-américaine sur de telles machines tournantes. Il est bien sûr possible d'ajouter de la mémoire dans la machine tournante mais pour des questions de coûts, une telle solution présente un intérêt limité par rapport au dispositif décrit ici qui repose sur une modification de programmation du calculateur moteur.An embodiment has been described here in which the apparatus of which the temperature is stored is a rotary electric machine for driving the combustion engine for the purposes of starting the latter, such as an alternator-starter or a reversible alternator. . As a variant, the temperature of a rotating electric machine is stored and estimated, which may be of another nature, such as an electric motor for propelling the vehicle, an electric motor for power steering, or even an electric air conditioning motor. Also in such cases, such a device makes it possible to solve the problem of the absence of read only memory or ROM memory for Read Only Memory according to the Anglo-American expression on such rotating machines. It is of course possible to add memory to the rotating machine, but for reasons of cost, such a solution is of limited interest compared to the device described here which is based on a modification of the programming of the engine ECU.

Claims (9)

  1. Motor vehicle comprising a combustion engine (1,2,3,4) an engine computer (4) configured to control at least one combustion parameter of the engine (1,2,3,4), a rotating electrical machine (1) which rotary electric machine (1) is a machine for driving the combustion engine (1,2,3,4) in rotation at start-up and comprises a sensor (3) measuring a temperature of the rotary electric machine (1), characterized in that the temperature sensor (3) and the engine computer (4) are configured such that when the combustion engine (1,2,3,4) is switched off, the temperature sensor (3) supplies the engine computer (4) with a temperature value of
    the rotating electrical machine (1) and the engine control unit (4) performs an estimation of a value of temperature of the engine electric rotary (1) obtained by the machine electric rotary (1) to a restart combustion engine (1,2,3,4) by said rotary electric machine (1) subsequent to said combustion engine is turned off (1,2,3,4) using the estimate for the temperature of the
    machine electric rotary (1) to the engine extinguishing combustion (1,2,3,4).
  2. Motor vehicle according to Claim 1, characterized in that the engine computer (4) is configured to estimate the value on restarting of the temperature of the rotating electrical machine (1) using a value of the duration of the combustion off engine (1,2,3,4).
  3. Motor vehicle according to the preceding claim, characterized in that it comprises a vehicle computer (6) controlling at least one parameter of a component of the vehicle which component is distinct from the combustion engine (1,2,3,4) and the vehicle computer (6) is configured to supply the combustion engine off time value (1,2,3,4) to the engine computer (4).
  4. Motor vehicle according to any one of the preceding claims, characterized in that the engine computer (4) is configured to estimate the value on restarting of the temperature of the rotating electrical machine (1) using an ambient temperature value.
  5. Motor vehicle according to the preceding claim, characterized in that it comprises a vehicle computer (6) controlling at least one parameter of a component of the vehicle which component is distinct from the combustion engine (1,2,3,4) and the vehicle computer (6) is configured to supply the ambient temperature value to the engine computer (4).
  6. Motor vehicle according to any one of the preceding claims, characterized in that the engine computer (4) is configured to store at least one value indicative of a thermal behavior of the rotating electrical machine (1) and to establish from this value a law of temperature decrease of the rotating electrical machine (1) as a function of time.
  7. Motor vehicle according to any one of the preceding claims, characterized in that the engine computer (4) and the rotary electrical machine (1) are configured so that the engine computer (4) supplies, when the vehicle is restarted, the estimated temperature at the rotating electric machine (1).
  8. Motor vehicle according to any one of the preceding claims, characterized in that the rotary electric machine (1) comprises a stator and
    the estimated temperature value of the rotary electric machine (1) as well as the temperature value of the electric machine rotary (1) to the combustion engine is turned off (1,2,3,4) are values temperature of the stator of the rotary electric machine (1).
  9. Motor vehicle according to any one of the preceding claims, characterized in that the rotating electrical machine (1) is an alternator-starter.
EP14793225.5A 2013-10-29 2014-09-26 Motor vehicle with improved restarting Active EP3063401B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1360573A FR3012528B1 (en) 2013-10-29 2013-10-29 AUTOMOTIVE VEHICLE WITH IMPROVED RESTART
PCT/FR2014/052429 WO2015063384A1 (en) 2013-10-29 2014-09-26 Motor vehicle with improved restarting

Publications (2)

Publication Number Publication Date
EP3063401A1 EP3063401A1 (en) 2016-09-07
EP3063401B1 true EP3063401B1 (en) 2021-05-19

Family

ID=49876879

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Application Number Title Priority Date Filing Date
EP14793225.5A Active EP3063401B1 (en) 2013-10-29 2014-09-26 Motor vehicle with improved restarting

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EP (1) EP3063401B1 (en)
FR (1) FR3012528B1 (en)
WO (1) WO2015063384A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3074104A1 (en) * 2017-11-30 2019-05-31 Orange PREDICTIVE ADJUSTMENT MOTOR, MOTOR CONTROLLER AND AUTOMATIC MOTOR ADJUSTMENT METHOD

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7631626B1 (en) * 2008-08-04 2009-12-15 Detroit Diesel Corporation Method to protect starter from overheating

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19946808A1 (en) * 1999-09-29 2001-04-19 Bosch Gmbh Robert Electric starter device for an internal combustion engine
WO2006125872A1 (en) * 2005-05-26 2006-11-30 Renault Trucks Method of controlling power supply to an electric starter
US7743649B1 (en) * 2008-12-18 2010-06-29 Gm Global Technology Operations, Inc. Cranking capability estimation for a vehicular starting system
KR101286823B1 (en) * 2009-12-31 2013-07-17 현대모비스 주식회사 Protecting method of motor driven steering system from overheat

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7631626B1 (en) * 2008-08-04 2009-12-15 Detroit Diesel Corporation Method to protect starter from overheating

Also Published As

Publication number Publication date
WO2015063384A1 (en) 2015-05-07
FR3012528B1 (en) 2018-01-12
EP3063401A1 (en) 2016-09-07
FR3012528A1 (en) 2015-05-01

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