EP3894684B1 - Method for heating the cooling liquid of an internal combustion engine after a cold start - Google Patents

Method for heating the cooling liquid of an internal combustion engine after a cold start Download PDF

Info

Publication number
EP3894684B1
EP3894684B1 EP19823803.2A EP19823803A EP3894684B1 EP 3894684 B1 EP3894684 B1 EP 3894684B1 EP 19823803 A EP19823803 A EP 19823803A EP 3894684 B1 EP3894684 B1 EP 3894684B1
Authority
EP
European Patent Office
Prior art keywords
temperature
engine
oil
coolant
motorization system
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.)
Active
Application number
EP19823803.2A
Other languages
German (de)
French (fr)
Other versions
EP3894684A1 (en
Inventor
Francois GUILCHARD
Fabrice Charlette
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.)
Stellantis Auto SAS
Original Assignee
PSA 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 PSA Automobiles SA filed Critical PSA Automobiles SA
Publication of EP3894684A1 publication Critical patent/EP3894684A1/en
Application granted granted Critical
Publication of EP3894684B1 publication Critical patent/EP3894684B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
    • F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
    • 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
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
    • F02D41/068—Introducing corrections for particular operating conditions for engine starting or warming up for warming-up
    • 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
    • F02N19/00—Starting aids for combustion engines, not otherwise provided for
    • F02N19/02—Aiding engine start by thermal means, e.g. using lighted wicks
    • F02N19/04—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines
    • F02N19/10—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines by heating of engine coolants
    • 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
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/021—Engine temperature
    • 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
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
    • F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
    • F02D41/064—Introducing corrections for particular operating conditions for engine starting or warming up for starting at cold start
    • 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
    • F02N2200/02—Parameters used for control of starting apparatus said parameters being related to the engine
    • F02N2200/024—Engine oil temperature

Definitions

  • the invention relates, in general, to the field of control laws for electronic control units, designated ECU "for Electronic Control Unit” in English, for starting an internal combustion engine, in particular mounted within a motor vehicle.
  • the invention relates more particularly to a method for heating the coolant of an engine after a cold start.
  • the rapid heating of the passenger compartment of a vehicle is obtained thanks to the use of an additional boiler heating the coolant of the engine, in particular in winter when the temperatures are the coldest.
  • the additional boiler heats the branch of the water circuit going to the unit heater, thus making it possible to heat the passenger compartment immediately, to defrost the windows and to preheat the heat engine of the vehicle before it is started.
  • the additional boiler operates independently of the engine but is powered by the vehicle's electrical circuit and by the engine's fuel circuit.
  • the air heater is a self-contained device used to heat a specific space, such as the passenger compartment of a vehicle. It consists of a heat exchanger equipped with a fan. The heat comes from a hot water or steam network, an electric coil or a gas burner whose exhaust passes inside the exchanger. The forced air circulates outside the unit heater exchanger where it is heated. The jet of hot air produced is then directed towards the space to be heated.
  • the additional boiler therefore preheats the coolant circuit before starting the engine, the operation of this boiler being separate and autonomous from the operation of the engine.
  • the heat generated by the additional boiler is then transmitted to the interior of the vehicle by a dedicated ventilation system. The passenger compartment and the engine of the vehicle are therefore heated.
  • a duration limited to a reduced time of the use of the additional boiler produces an increase in the temperature of the coolant, designated temperature of the water, but not of the temperature of the oil of the engine, designated temperature. the oil, which fails to rise sufficiently.
  • the engine oil is heated solely by conduction with the engine block of the vehicle which is itself heated by the circulation of the coolant heated by the additional boiler. Too short a duration of use of the additional boiler therefore limits the heating of the engine oil.
  • control laws stored by the electronic control unit for vehicle engines work out maps for the starting phase of the engine of the vehicle as a function of the engine speed and the temperature of the water, without taking into account the oil temperature.
  • an insufficient temperature of the engine oil leads to losses in terms of friction in the engine causing problems of stalling and operation under engine speed.
  • the electronic control unit applies parameters that are not adapted to the friction losses of the engine, the initialization of the torque structure is then incorrect, causing stalls after engine start. Indeed, the speed from which the transition between the start-up phase and the post-start-up phase takes place is then too low compared to the friction losses actually seen by the engine.
  • the invention therefore aims to solve these drawbacks by proposing a method for heating the coolant of a motorization system of a vehicle produced just after starting the engine, by correcting the initialization of the engine torque structure during too short use of the additional boiler.
  • the present invention relates to a method for controlling a motorization system of a vehicle, in particular of a motor vehicle, the motorization system comprising a boiler for heating a coolant circuit before starting of the engine system, an electronic control unit performing the engine system control method for controlling the starting of the engine, and an oil circuit, said control method comprising: measuring the temperature of the coolant and measurement of the temperature of the engine oil, the comparison of the temperature difference between the temperature of the coolant and the temperature of the oil of the engine with respect to a temperature threshold that can be calibrated according to the engine friction losses, if after starting the engine system the temperature difference between the coolant temperature and the oil temperature of the engine is higher than said calibratable temperature threshold, the implementation of a control law comprising an engine speed setpoint vector determining the starting output which is a function of the temperature of the oil, and if after starting the system engine the temperature difference between the temperature of the coolant and the temperature of the oil of the engine is lower than said calibratable temperature threshold, the implementation of a control law comprising an
  • a control law determines an initialization vector of torque setpoint which is a function of the temperature of the engine oil, and if after starting the motorization system the temperature difference between the temperature of the cooling liquid and the temperature of the oil is lower than said calibratable temperature threshold , said method comprises the implementation of a control law comprising a torque setpoint initialization vector which is a function of the temperature of the coolant.
  • the method comprises a step of recording the value of a set of elements which take part in the control of the effective torque produced by the motor in the memory of the electronic control unit.
  • the method comprises producing a map of the temperatures and of the engine speed, to determine the temperature threshold that can be calibrated as a function of the friction losses of the engine.
  • the map is indexed according to the temperature of the engine oil.
  • the temperature difference between the temperature of the coolant and the temperature of the engine oil above said calibratable temperature threshold is determined by the generation of a code by the electronic control unit.
  • the temperature difference between the temperature of the coolant and the temperature of the engine oil below said calibratable temperature threshold is determined by the generation of a code by the electronic control unit.
  • the present invention also relates to an electronic control unit for a motorization system of a vehicle, configured to implement the method for controlling a motorization system of a vehicle as briefly described above.
  • the present invention also relates to a motor vehicle comprising such an electronic control unit.
  • the embodiments described relate more particularly to an implementation of the method for controlling a motorization system according to the invention within a motor vehicle.
  • any implementation in a different context, in particular in any type of vehicle, is also covered by the present invention.
  • the figure 1 shows a diagram of the detection of the temperature difference between the temperature of the coolant 1 and the temperature of the oil of the engine 2, at the instant following the start of the engine, that is to say at the time of the transition between the starting phase and the phase after starting the engine, during the initialization of all the elements which participate in the control of the effective torque produced by engine.
  • the regime from which the transition between the start-up phase and the post-start-up phase takes place is generally mapped by a table indexed by water temperature.
  • this indexing according to the temperature of the water is unsuitable in the case of the use of an additional boiler for a short time because the temperature of the water is high while that of the oil does not. is not.
  • the temperature of the water is not a parameter which takes into account the actual friction losses of the engine, unlike the temperature of the oil.
  • the initialization torque used to initiate the torque structure is then too low compared to the actual torque and the temperature difference between the water temperature and the oil temperature causes the engine to underspeed, the regulator idling struggling to restore the engine speed to its set point. Friction losses are therefore reflected at the engine level by under-rev driving and engine stalls.
  • the figure 1 shows a diagram of detecting the temperature difference between the temperature of the coolant 1 and the temperature of the oil of the engine 2.
  • a calibratable temperature threshold 3 When the engine starts 4, and the difference between the temperature of the coolant 1 and the oil temperature of engine 2 is higher than a calibratable temperature threshold 3, then the critical situation likely to generate engine stalling or under-rev driving is identified, the two conditions mentioned must necessarily be met 5.
  • a specific CRITICAL_LIFE_SITUATION code is created 6.
  • a message can then be displayed on a screen on board the vehicle, indicating that said critical situation has been identified. The screen then displays a wording indicating that the CRITICAL_LIFE_SITUATION code is TRUE 8. Otherwise, i.e.
  • the figure 2 represents an application diagram of the method according to the invention to the transition regime from starting to the engine torque structure, if the temperature difference between the temperature of the coolant 1 and the oil temperature of the engine 2 has exceeded the calibratable temperature threshold 3, then the critical situation liable to generate engine stalling or under-rev driving is identified, these two conditions necessarily having to be met.
  • a specific CRITICAL_LIFE_SITUATION code is created 6.
  • a message can then be displayed on a screen on board the vehicle, indicating that said critical situation has been identified.
  • the transition regime to the engine torque structure 11 is produced from a table indexed according to the temperature of the oil of the engine 2, making it possible to obtain an engine speed setpoint vector determining the output of start according to engine oil temperature 10.
  • the critical situation n is not identified 7.
  • a message can then be displayed on a screen on board the vehicle, indicating that said critical situation has not been identified.
  • the transition regime to the engine torque structure 11 is produced from a table indexed according to the temperature of the coolant 1, a vector of engine speed setpoint determining the start output as a function of the coolant temperature 12.
  • the picture 3 represents an application diagram of the method according to the invention to the initialization torque of all the elements which participate in the control of the effective torque produced by the engine, when the temperature difference between the temperature of coolant 1 and the oil temperature of engine 2 has exceeded the calibratable temperature threshold 3.
  • the initialization torque of all the elements which take part in the control of the effective torque produced by the motor 14 is then produced from a table indexed according to the temperature of the oil of the motor 2, in order to obtain a torque set point initialization vector as a function of the oil temperature 13.
  • the initialization torque of all the elements which take part in controlling the effective torque produced by the motor 14 is then produced by a table indexed as a function of the temperature of the coolant 1 and a vector is obtained as a function of the temperature of the coolant 1 of the torque setpoint initialization torque 15.
  • the method according to the invention therefore makes it possible to avoid engine stalls solely by means of the control laws of the vehicle and without adding additional parts.
  • the electronic control unit takes into account the temperature of the engine oil rather than that of the coolant after the cold start of the engine, thus making it possible to avoid losses by friction.

Description

Domaine techniqueTechnical area

L'invention concerne, de façon générale, le domaine des lois de commande d'unités de contrôle électronique, désignés ECU « pour Electronic Control Unit » en anglais, pour le démarrage d'un moteur à combustion interne, en particulier monté au sein d'un véhicule automobile.The invention relates, in general, to the field of control laws for electronic control units, designated ECU "for Electronic Control Unit" in English, for starting an internal combustion engine, in particular mounted within a motor vehicle.

L'invention porte plus particulièrement sur un procédé de chauffage du liquide de refroidissement d'un moteur après un démarrage à froid.The invention relates more particularly to a method for heating the coolant of an engine after a cold start.

Technique antérieurePrior technique

De manière connue, le chauffage rapide de l'habitacle d'un véhicule est obtenu grâce à l'utilisation d'une chaudière additionnelle chauffant le liquide de refroidissement du moteur, notamment en hiver lorsque les températures sont les plus froides.In known manner, the rapid heating of the passenger compartment of a vehicle is obtained thanks to the use of an additional boiler heating the coolant of the engine, in particular in winter when the temperatures are the coldest.

En effet, la chaudière additionnelle chauffe la branche du circuit d'eau allant à l'aérotherme, permettant ainsi de chauffer immédiatement l'habitacle, de dégivrer les vitres et de préchauffer le moteur thermique du véhicule avant son démarrage. La chaudière additionnelle fonctionne indépendamment du moteur mais elle est alimentée par le circuit électrique du véhicule et par le circuit de carburant du moteur.Indeed, the additional boiler heats the branch of the water circuit going to the unit heater, thus making it possible to heat the passenger compartment immediately, to defrost the windows and to preheat the heat engine of the vehicle before it is started. The additional boiler operates independently of the engine but is powered by the vehicle's electrical circuit and by the engine's fuel circuit.

L'aérotherme est un appareil autonome servant à chauffer un espace spécifique, tel que l'habitacle d'un véhicule. Il est composé d'un échangeur de chaleur muni d'un ventilateur. La chaleur provient d'un réseau d'eau chaude ou de vapeur, d'un serpentin électrique ou d'un brûleur à gaz dont l'échappement passe à l'intérieur de l'échangeur. L'air pulsé circule à l'extérieur de l'échangeur de l'aérotherme où il est réchauffé. Le jet d'air chaud produit est alors dirigé vers l'espace à chauffer.The air heater is a self-contained device used to heat a specific space, such as the passenger compartment of a vehicle. It consists of a heat exchanger equipped with a fan. The heat comes from a hot water or steam network, an electric coil or a gas burner whose exhaust passes inside the exchanger. The forced air circulates outside the unit heater exchanger where it is heated. The jet of hot air produced is then directed towards the space to be heated.

La chaudière additionnelle préchauffe donc le circuit de liquide de refroidissement avant le démarrage du moteur, le fonctionnement de cette chaudière étant séparé et autonome du fonctionnement du moteur. La chaleur générée par la chaudière additionnelle est ensuite transmise à l'intérieur du véhicule par un système de ventilation dédié. L'habitacle ainsi que le moteur du véhicule sont donc chauffés.The additional boiler therefore preheats the coolant circuit before starting the engine, the operation of this boiler being separate and autonomous from the operation of the engine. The heat generated by the additional boiler is then transmitted to the interior of the vehicle by a dedicated ventilation system. The passenger compartment and the engine of the vehicle are therefore heated.

Cependant, une durée limitée à un temps réduit de l'utilisation de la chaudière additionnelle produit une augmentation de la température du liquide de refroidissement, désignée température de l'eau, mais pas de la température de l'huile du moteur, désignée température de l'huile, qui ne parvient pas à s'élever suffisamment. En effet, l'huile du moteur est chauffée uniquement par conduction avec le bloc moteur du véhicule qui est lui-même réchauffé par la circulation du liquide de refroidissement chauffé par la chaudière additionnelle. Une durée trop courte d'utilisation de la chaudière additionnelle limite donc le réchauffement de l'huile du moteur.However, a duration limited to a reduced time of the use of the additional boiler produces an increase in the temperature of the coolant, designated temperature of the water, but not of the temperature of the oil of the engine, designated temperature. the oil, which fails to rise sufficiently. Indeed, the engine oil is heated solely by conduction with the engine block of the vehicle which is itself heated by the circulation of the coolant heated by the additional boiler. Too short a duration of use of the additional boiler therefore limits the heating of the engine oil.

Or, les pertes de frottements dans le moteur dépendent de la viscosité de l'huile en fonction de la température. Une température insuffisante de l'huile de moteur a alors pour conséquence des pertes au niveau des frottements dans le moteur, occasionnant des problèmes de calage et de fonctionnement en sous régime du moteur.However, the friction losses in the engine depend on the viscosity of the oil as a function of the temperature. Insufficient engine oil temperature then results in friction losses in the engine, causing problems with stalling and under-revving of the engine.

On connait par le document US8763577B2 un moteur à combustion interne pourvu d'un système de réchauffage pour chauffer le liquide de refroidissement du moteur. Dans ce cas, la température du liquide de refroidissement et de l'huile de moteur sont déterminées. Si la différence de température entre ces deux températures est supérieure à une valeur seuil donnée, alors la quantité de carburant de départ augmente.We know from the document US8763577B2 an internal combustion engine provided with a heating system for heating the engine coolant. In this case, the temperature of the coolant and engine oil are determined. If the temperature difference between these two temperatures is greater than a given threshold value, then the quantity of starting fuel increases.

Cependant, les lois de commande stockées par l'unité de contrôle électronique pour moteur de véhicules élaborent des cartographies pour la phase de démarrage du moteur du véhicule en fonction du régime du moteur et de la température de l'eau, sans tenir compte de la température de l'huile. Or, une température insuffisante de l'huile de moteur entraîne des pertes au niveau des frottements dans le moteur occasionnant des problèmes de calage et de fonctionnement en sous régime du moteur. En utilisant des cartographies basées principalement sur la température de l'eau et non sur la température de l'huile, l'unité de contrôle électronique applique des paramètres non adaptés aux pertes par frottement du moteur, l'initialisation de la structure couple est alors incorrecte, engendrant des calages après le démarrage du moteur. En effet, le régime à partir duquel s'opère la transition entre la phase de démarrage et la phase d'après démarrage est alors trop bas par rapport aux pertes de frottement réellement vues par le moteur.However, the control laws stored by the electronic control unit for vehicle engines work out maps for the starting phase of the engine of the vehicle as a function of the engine speed and the temperature of the water, without taking into account the oil temperature. However, an insufficient temperature of the engine oil leads to losses in terms of friction in the engine causing problems of stalling and operation under engine speed. By using maps based mainly on the water temperature and not on the oil temperature, the electronic control unit applies parameters that are not adapted to the friction losses of the engine, the initialization of the torque structure is then incorrect, causing stalls after engine start. Indeed, the speed from which the transition between the start-up phase and the post-start-up phase takes place is then too low compared to the friction losses actually seen by the engine.

L'invention vise donc à résoudre ces inconvénients en proposant un procédé de chauffage du liquide de refroidissement d'un système de motorisation d'un véhicule réalisé juste après le démarrage du moteur, en corrigeant l'initialisation de la structure couple moteur lors d'une utilisation trop courte de la chaudière additionnelle.The invention therefore aims to solve these drawbacks by proposing a method for heating the coolant of a motorization system of a vehicle produced just after starting the engine, by correcting the initialization of the engine torque structure during too short use of the additional boiler.

Résumé de l'inventionSummary of the invention

Pour parvenir à ce résultat, la présente invention concerne un procédé de commande d'un système de motorisation d'un véhicule, notamment d'un véhicule automobile, le système de motorisation comprenant une chaudière pour chauffer un circuit de liquide de refroidissement avant le démarrage du système de motorisation, une unité de contrôle électronique exécutant le procédé de commande du système de motorisation pour contrôler le démarrage du moteur, et un circuit d'huile, ledit procédé de commande comprenant : la mesure de la température du liquide de refroidissement et la mesure de la température de l'huile du moteur, la comparaison de l'écart de température entre la température du liquide de refroidissement et la température de l'huile du moteur vis-à-vis d'un seuil de température calibrable en fonction des pertes par frottement du moteur, si après démarrage du système de motorisation l'écart de température entre la température du liquide de refroidissement et la température de l'huile du moteur est supérieur audit seuil de température calibrable, la mise en œuvre d'une loi de commande comprenant un vecteur de consigne de régime moteur déterminant la sortie de démarrage qui est fonction de la température de l'huile, et si après démarrage du système de motorisation l'écart de température entre la température du liquide de refroidissement et la température de l'huile du moteur est inférieur audit seuil de température calibrable, la mise en œuvre d'une loi de commande comprenant un vecteur de consigne de régime moteur déterminant la sortie de démarrage qui est fonction de la température du liquide de refroidissement.To achieve this result, the present invention relates to a method for controlling a motorization system of a vehicle, in particular of a motor vehicle, the motorization system comprising a boiler for heating a coolant circuit before starting of the engine system, an electronic control unit performing the engine system control method for controlling the starting of the engine, and an oil circuit, said control method comprising: measuring the temperature of the coolant and measurement of the temperature of the engine oil, the comparison of the temperature difference between the temperature of the coolant and the temperature of the oil of the engine with respect to a temperature threshold that can be calibrated according to the engine friction losses, if after starting the engine system the temperature difference between the coolant temperature and the oil temperature of the engine is higher than said calibratable temperature threshold, the implementation of a control law comprising an engine speed setpoint vector determining the starting output which is a function of the temperature of the oil, and if after starting the system engine the temperature difference between the temperature of the coolant and the temperature of the oil of the engine is lower than said calibratable temperature threshold, the implementation of a control law comprising an engine speed setpoint vector determining the start output which is a function of the coolant temperature.

Avantageusement, si après démarrage du système de motorisation, l'écart de température entre la température du liquide de refroidissement et la température de l'huile du moteur est inférieur audit seuil de température calibrable, une loi de commande détermine un vecteur d'initialisation de consigne de couple qui est fonction de la température de l'huile du moteur, et si après démarrage du système de motorisation l'écart de température entre la température du liquide de refroidissement et la température de l'huile est inférieur audit seuil de température calibrable, ledit procédé comprend la mise en œuvre d'une loi de commande comprenant un vecteur d'initialisation de consigne de couple qui est fonction de la température du liquide de refroidissement.Advantageously, if after starting the engine system, the temperature difference between the temperature of the coolant and the temperature of the engine oil is lower than said calibratable temperature threshold, a control law determines an initialization vector of torque setpoint which is a function of the temperature of the engine oil, and if after starting the motorization system the temperature difference between the temperature of the cooling liquid and the temperature of the oil is lower than said calibratable temperature threshold , said method comprises the implementation of a control law comprising a torque setpoint initialization vector which is a function of the temperature of the coolant.

De manière avantageuse, le procédé comprend une étape d'enregistrement de la valeur d'un ensemble d'éléments qui participent au contrôle du couple efficace produit par le moteur dans la mémoire de l'unité de contrôle électronique.Advantageously, the method comprises a step of recording the value of a set of elements which take part in the control of the effective torque produced by the motor in the memory of the electronic control unit.

Avantageusement, le procédé comprend la réalisation d'une cartographie des températures et du régime du moteur, pour déterminer le seuil de température calibrable en fonction des pertes par frottement du moteur.Advantageously, the method comprises producing a map of the temperatures and of the engine speed, to determine the temperature threshold that can be calibrated as a function of the friction losses of the engine.

De manière avantageuse, la cartographie est indexée selon la température de l'huile du moteur.Advantageously, the map is indexed according to the temperature of the engine oil.

Avantageusement, l'écart de température entre la température du liquide de refroidissement et la température de l'huile du moteur supérieur audit seuil de température calibrable est déterminé par la génération d'un code par l'unité de contrôle électronique.Advantageously, the temperature difference between the temperature of the coolant and the temperature of the engine oil above said calibratable temperature threshold is determined by the generation of a code by the electronic control unit.

De manière avantageuse, l'écart de température entre la température du liquide de refroidissement et la température de l'huile du moteur inférieur audit seuil de température calibrable est déterminé par la génération d'un code par l'unité de contrôle électronique.Advantageously, the temperature difference between the temperature of the coolant and the temperature of the engine oil below said calibratable temperature threshold is determined by the generation of a code by the electronic control unit.

La présente invention vise également une unité de contrôle électronique pour un système de motorisation d'un véhicule, configurée pour mettre en œuvre le procédé de commande d'un système de motorisation d'un véhicule tel que brièvement décrit ci-dessus.The present invention also relates to an electronic control unit for a motorization system of a vehicle, configured to implement the method for controlling a motorization system of a vehicle as briefly described above.

La présente invention vise aussi un véhicule automobile comprenant une telle unité de contrôle électronique.The present invention also relates to a motor vehicle comprising such an electronic control unit.

Brève description des dessinsBrief description of the drawings

L'invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple, et se référant aux dessins annexés donnés à titre d'exemples non limitatifs, dans lesquels des références identiques sont données à des objets semblables et sur lesquels :

  • [Fig. 1] illustre schématiquement la détection de l'écart de température entre la température du liquide de refroidissement et la température de l'huile du moteur, juste après la phase de démarrage du moteur ;
  • [Fig. 2] illustre schématiquement l'application du vecteur de consigne du régime moteur déterminant la sortie de démarrage ;
  • [Fig. 3] illustre schématiquement l'application du vecteur d'initialisation de consigne de couple.
The invention will be better understood on reading the following description, given solely by way of example, and referring to the accompanying drawings given by way of non-limiting examples, in which identical references are given to similar objects. and on which:
  • [ Fig. 1 ] schematically illustrates the detection of the temperature difference between the temperature of the coolant and the temperature of the engine oil, just after the engine starting phase;
  • [ Fig. 2 ] schematically illustrates the application of the engine speed setpoint vector determining the start output;
  • [ Fig. 3 ] schematically illustrates the application of the torque setpoint initialization vector.

Description des modes de réalisationDescription of embodiments

Il faut noter que les figures exposent l'invention de manière détaillée pour mettre en œuvre l'invention, lesdites figures pouvant bien entendu servir à mieux définir l'invention le cas échéant.It should be noted that the figures expose the invention in detail to implement the invention, said figures can of course be used to better define the invention if necessary.

Dans ce qui va suivre, les modes de réalisation décrits s'attachent plus particulièrement à une mise en œuvre du procédé de commande d'un système de motorisation selon l'invention au sein d'un véhicule automobile. Cependant, toute mise en œuvre dans un contexte différent, en particulier dans tout type de véhicule, est également visée par la présente invention.In what follows, the embodiments described relate more particularly to an implementation of the method for controlling a motorization system according to the invention within a motor vehicle. However, any implementation in a different context, in particular in any type of vehicle, is also covered by the present invention.

La figure 1 représente un schéma de la détection de l'écart de température entre la température du liquide de refroidissement 1 et la température de l'huile du moteur 2, à l'instant suivant le démarrage du moteur, c'est-à-dire au moment de la transition entre la phase de démarrage et la phase d'après démarrage du moteur, lors de l'initialisation de l'ensemble des éléments qui participent au contrôle du couple efficace produit par le moteur.The figure 1 shows a diagram of the detection of the temperature difference between the temperature of the coolant 1 and the temperature of the oil of the engine 2, at the instant following the start of the engine, that is to say at the time of the transition between the starting phase and the phase after starting the engine, during the initialization of all the elements which participate in the control of the effective torque produced by engine.

Le régime à partir duquel s'opère la transition entre la phase de démarrage et la phase d'après démarrage est généralement cartographié par une table indexée en température de l'eau. Cependant, cette indexation en fonction de la température de l'eau est inadaptée dans le cas de l'utilisation d'une chaudière additionnelle pendant une courte durée car la température de l'eau est élevée tandis que celle de l'huile ne l'est pas.The regime from which the transition between the start-up phase and the post-start-up phase takes place is generally mapped by a table indexed by water temperature. However, this indexing according to the temperature of the water is unsuitable in the case of the use of an additional boiler for a short time because the temperature of the water is high while that of the oil does not. is not.

Or, la température de l'eau n'est pas un paramètre qui tient compte des pertes de frottements réelles du moteur, contrairement à la température de l'huile. Le couple d'initialisation utilisé pour initier la structure couple est alors trop bas par rapport au couple réel et l'écart de température entre la température de l'eau et la température de l'huile engendre un sous-régime du moteur, le régulateur de ralenti peinant à rétablir le régime moteur sur sa consigne. Les pertes de frottements se traduisent donc au niveau du moteur par une conduite en sous-régime et des calages du moteur.However, the temperature of the water is not a parameter which takes into account the actual friction losses of the engine, unlike the temperature of the oil. The initialization torque used to initiate the torque structure is then too low compared to the actual torque and the temperature difference between the water temperature and the oil temperature causes the engine to underspeed, the regulator idling struggling to restore the engine speed to its set point. Friction losses are therefore reflected at the engine level by under-rev driving and engine stalls.

La figure 1 représente un schéma de détection de l'écart de température entre la température du liquide de refroidissement 1 et la température de l'huile du moteur 2. Lorsque le moteur démarre 4, et que l'écart entre la température du liquide de refroidissement 1 et la température de l'huile du moteur 2 est supérieure à un seuil de température calibrable 3, alors la situation critique susceptible de générer un calage du moteur ou une conduite en sous-régime est identifiée, les deux conditions citées devant nécessairement être réunies 5. Dans ce cas, par exemple, un code spécifique SITUATION_DE_VIE_CRITIQUE est créé 6. Selon un mode de réalisation, un message peut s'afficher alors sur un écran à bord du véhicule, indiquant que ladite situation critique a été identifiée. L'écran affiche alors un libellé traduisant que le code SITUATION_DE_VIE_CRITIQUE est VRAI 8. Dans le cas contraire, c'est-à-dire si l'écart entre la température du liquide de refroidissement 1 et la température de l'huile du moteur 2 est inférieur ou égal audit seuil de température calibrable 3, alors la situation critique n'est pas identifiée 7. Dans ce cas, un message indiquant SITUATION_DE_VIE_CRITIQUE est FAUX 9 s'affiche sur l'écran de bord du véhicule.The figure 1 shows a diagram of detecting the temperature difference between the temperature of the coolant 1 and the temperature of the oil of the engine 2. When the engine starts 4, and the difference between the temperature of the coolant 1 and the oil temperature of engine 2 is higher than a calibratable temperature threshold 3, then the critical situation likely to generate engine stalling or under-rev driving is identified, the two conditions mentioned must necessarily be met 5. In this case, for example, a specific CRITICAL_LIFE_SITUATION code is created 6. According to one embodiment, a message can then be displayed on a screen on board the vehicle, indicating that said critical situation has been identified. The screen then displays a wording indicating that the CRITICAL_LIFE_SITUATION code is TRUE 8. Otherwise, i.e. if the difference between the temperature of coolant 1 and the temperature of engine oil 2 is less than or equal to said calibratable temperature threshold 3, then the critical situation is not identified 7. In this case, a message indicating SITUATION_DE_VIE_CRITIQUE is FALSE 9 is displayed on the vehicle's on-board screen.

La figure 2 représente un schéma d'application du procédé selon l'invention au régime de transition du démarrage vers la structure couple moteur, si l'écart de température entre la température du liquide de refroidissement 1 et la température d'huile du moteur 2 a dépassé le seuil de température calibrable 3, alors la situation critique susceptible de générer un calage du moteur ou une conduite en sous-régime est identifiée, ces deux conditions devant nécessairement être réunies. Dans ce cas, par exemple, un code spécifique SITUATION_DE_VIE_CRITIQUE est créé 6. Selon un mode de réalisation, un message peut s'afficher alors sur un écran à bord du véhicule, indiquant que ladite situation critique a été identifiée. Dans ce cas le régime de transition vers la structure couple moteur 11 est réalisé à partir d'une table indexée en fonction de la température de l'huile du moteur 2, permettant d'obtenir un vecteur de consigne du régime moteur déterminant la sortie de démarrage en fonction de la température de l'huile du moteur 10.The figure 2 represents an application diagram of the method according to the invention to the transition regime from starting to the engine torque structure, if the temperature difference between the temperature of the coolant 1 and the oil temperature of the engine 2 has exceeded the calibratable temperature threshold 3, then the critical situation liable to generate engine stalling or under-rev driving is identified, these two conditions necessarily having to be met. In this case, for example, a specific CRITICAL_LIFE_SITUATION code is created 6. According to one embodiment, a message can then be displayed on a screen on board the vehicle, indicating that said critical situation has been identified. In this case, the transition regime to the engine torque structure 11 is produced from a table indexed according to the temperature of the oil of the engine 2, making it possible to obtain an engine speed setpoint vector determining the output of start according to engine oil temperature 10.

Dans le cas contraire, c'est-à-dire si l'écart entre la température du liquide de refroidissement 1 et la température de l'huile du moteur 2 est inférieur ou égale audit seuil de température calibrable 3, alors la situation critique n'est pas identifiée 7. Selon un mode de réalisation, un message peut s'afficher alors sur un écran à bord du véhicule, indiquant que ladite situation critique n'a pas été identifiée. Dans ce cas, le régime de transition vers la structure couple moteur 11 est réalisé à partir d'une table indexée en fonction de la température du liquide de refroidissement 1, on obtient alors un vecteur de consigne du régime moteur déterminant la sortie de démarrage en fonction de la température du liquide de refroidissement 12.Otherwise, that is to say if the difference between the temperature of the coolant 1 and the temperature of the oil of the engine 2 is less than or equal to said calibratable temperature threshold 3, then the critical situation n is not identified 7. According to one embodiment, a message can then be displayed on a screen on board the vehicle, indicating that said critical situation has not been identified. In this case, the transition regime to the engine torque structure 11 is produced from a table indexed according to the temperature of the coolant 1, a vector of engine speed setpoint determining the start output as a function of the coolant temperature 12.

La figure 3 représente un schéma d'application du procédé selon l'invention au couple d'initialisation de l'ensemble des éléments qui participent au contrôle du couple efficace produit par le moteur, lorsque l'écart de température entre la température de liquide de refroidissement 1 et la température de l'huile du moteur 2 a dépassé le seuil de température calibrable 3. Comme précédemment, lorsque par exemple le code SITUATION_DE_VIE_CRITIQUE est créé 6 et que le conducteur reçoit un message sur un écran de bord du véhicule lui signalant que la situation critique est identifiée 8, le couple d'initialisation de l'ensemble des éléments qui participent au contrôle du couple efficace produit par le moteur 14 est alors réalisé à partir d'une table indexée en fonction de la température de l'huile du moteur 2, afin d'obtenir un vecteur d'initialisation de consigne du couple en fonction de la température d'huile 13.The picture 3 represents an application diagram of the method according to the invention to the initialization torque of all the elements which participate in the control of the effective torque produced by the engine, when the temperature difference between the temperature of coolant 1 and the oil temperature of engine 2 has exceeded the calibratable temperature threshold 3. As before, when for example the SITUATION_DE_VIE_CRITIQUE code is created 6 and the driver receives a message on an on-board screen of the vehicle informing him that the critical situation is identified as 8, the initialization torque of all the elements which take part in the control of the effective torque produced by the motor 14 is then produced from a table indexed according to the temperature of the oil of the motor 2, in order to obtain a torque set point initialization vector as a function of the oil temperature 13.

En revanche, si la situation critique n'est pas identifiée 7 (par exemple, le code SITUATION_DE_VIE_CRITIQUE n'est pas créé), le couple d'initialisation de l'ensemble des éléments qui participent au contrôle du couple efficace produit par le moteur 14 est alors réalisé par une table indexée en fonction de la température du liquide de refroidissement 1 et on obtient un vecteur en fonction de la température du liquide de refroidissement 1 du couple d'initialisation de consigne de couple 15.On the other hand, if the critical situation is not identified 7 (for example, the SITUATION_DE_VIE_CRITIQUE code is not created), the initialization torque of all the elements which take part in controlling the effective torque produced by the motor 14 is then produced by a table indexed as a function of the temperature of the coolant 1 and a vector is obtained as a function of the temperature of the coolant 1 of the torque setpoint initialization torque 15.

Le procédé selon l'invention permet donc d'éviter les calages du moteur uniquement par l'intermédiaire des lois de commande du véhicule et sans ajout de pièces supplémentaires.The method according to the invention therefore makes it possible to avoid engine stalls solely by means of the control laws of the vehicle and without adding additional parts.

En effet, l'unité de contrôle électronique prend en compte la température de l'huile du moteur plutôt que celle du liquide de refroidissement après le démarrage à froid du moteur, permettant ainsi d'éviter les pertes par frottement.Indeed, the electronic control unit takes into account the temperature of the engine oil rather than that of the coolant after the cold start of the engine, thus making it possible to avoid losses by friction.

Claims (9)

  1. Method for controlling a motorization system of a vehicle, in particular of a motor vehicle, the motorization system comprising a boiler for heating a cooling liquid circuit before starting the motorization system, an electronic control unit executing the motorization system control method for controlling the starting of the engine, and an oil circuit, characterized in that said control method comprises:
    - the coolant temperature measurement (1) and the engine oil temperature measurement (2),
    - the comparison of the temperature difference between the temperature of the coolant (1) and the temperature of the engine oil (2) with respect to a calibra ble temperature threshold (3) according to the engine friction losses,
    - if, after starting the engine system, the temperature difference between the temperature of the coolant (1) and the temperature of the engine oil (2) is greater than said calibratable temperature threshold (3), the setting implementation of a control law comprising an engine speed setpoint vector determining the starting output (10) which is a function of the temperature of the oil (2), and
    - if, after starting the engine system, the temperature difference between the temperature of the coolant (1) and the temperature of the engine oil (2) is lower than said calibratable temperature threshold (3), the setting implementation of a control law comprising an engine speed setpoint vector determining the starting output (10) which is a function of the temperature of the coolant (1).
  2. Method for controlling a motorization system of a vehicle according to claim 1, characterized in that
    if, after starting the motorization system, the temperature difference between the temperature of the coolant (1) and the temperature of the engine oil (2) is lower than said calibratable temperature threshold (3), a law of control determines a torque setpoint initialization vector (13) which is a function of the temperature of the engine oil (2), and if, after starting the motorization system, the temperature difference between the temperature of the liquid cooling (1) and the temperature of the oil (2) is below said calibratable temperature threshold (3), the implementation of a control law comprising a torque setpoint initialization vector (13) which depends on the temperature of the coolant (1).
  3. Method for controlling a motorization system of a vehicle according to the preceding claim comprising a step of recording the value of a set of elements which take part in the control of the effective torque produced by the motor in the memory of the electronic control unit.
  4. Method for controlling a motorization system of a vehicle according to one of the preceding claims, comprising the production of a map of the temperatures and of the engine speed, to determine the calibratable temperature threshold (3) as a function of the losses by engine friction.
  5. Method for controlling a motorization system of a vehicle according to the preceding claim, characterized in that the map is indexed according to the temperature of the oil of the engine (2).
  6. Method for controlling a motorization system of a vehicle according to the preceding claims, in which the temperature difference between the temperature of the cooling liquid (1) and the temperature of the oil of the engine (2) greater than said threshold of calibratable temperature (3) is determined by the generation of a code (8) by the electronic control unit.
  7. Method for controlling a motorization system of a vehicle according to the preceding claims, in which the temperature difference between the temperature of the cooling liquid (1) and the temperature of the oil of the engine (2) below said threshold of calibratable temperature (3) is determined by the generation of a code (9) by the electronic control unit.
  8. Electronic control unit for a motorization system of a vehicle, configured to implement the method for controlling a motorization system of a vehicle according to one of the preceding claims.
  9. Motor vehicle comprising an electronic control unit according to the preceding claim
EP19823803.2A 2018-12-10 2019-11-19 Method for heating the cooling liquid of an internal combustion engine after a cold start Active EP3894684B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1872575A FR3089563B1 (en) 2018-12-10 2018-12-10 METHOD OF HEATING THE COOLANT OF AN INTERNAL COMBUSTION ENGINE AFTER A COLD START
PCT/FR2019/052755 WO2020120852A1 (en) 2018-12-10 2019-11-19 Method for heating the liquid coolant of an internal combustion engine after a cold start

Publications (2)

Publication Number Publication Date
EP3894684A1 EP3894684A1 (en) 2021-10-20
EP3894684B1 true EP3894684B1 (en) 2023-01-18

Family

ID=66690487

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19823803.2A Active EP3894684B1 (en) 2018-12-10 2019-11-19 Method for heating the cooling liquid of an internal combustion engine after a cold start

Country Status (3)

Country Link
EP (1) EP3894684B1 (en)
FR (1) FR3089563B1 (en)
WO (1) WO2020120852A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7277791B2 (en) * 2005-10-19 2007-10-02 International Engine Intellectual Property Company, Llc Strategy for detecting use of a block heater and for modifying temperature-dependent variables to account for its use
JP4897715B2 (en) * 2008-01-28 2012-03-14 ヤンマー株式会社 Diesel engine control device
DE102008015283B3 (en) 2008-03-20 2009-09-03 Continental Automotive Gmbh Method and control device for starting an internal combustion engine, which has a heating device for heating a cooling liquid
FR3048737B1 (en) * 2016-03-08 2018-03-16 Peugeot Citroen Automobiles Sa METHOD FOR CONTROLLING PREHEATING CANDLES OF AN ENGINE

Also Published As

Publication number Publication date
FR3089563A1 (en) 2020-06-12
WO2020120852A1 (en) 2020-06-18
FR3089563B1 (en) 2020-11-13
EP3894684A1 (en) 2021-10-20

Similar Documents

Publication Publication Date Title
FR2858017A1 (en) STARTING MOM CONTROL APPARATUS AND APPARATUS FOR CONTROLLING THE STOPPING TIME OF AN INTERNAL COMBUSTION ENGINE, CONTROL METHODS THEREFOR, AND RECORDING MEDIA
FR2839119A1 (en) System for starting and restarting motor vehicle engines, uses two starters under control of engine control computer that cuts engine when the vehicle stops, measuring acceleration of engine to check that the chosen starter is working
EP2162609B1 (en) Method for starting an internal combustion engine
FR2710105A1 (en) Method for monitoring the starting behavior of a catalyst system of a motor vehicle.
EP1456045B1 (en) Motor vehicle air-conditioning installation equipped with an electronic control device
FR2884184A1 (en) METHOD AND DEVICE FOR PRODUCING A STOP CONTROL AND RESTART OF A MOTOR VEHICLE ENGINE
EP1072766A1 (en) Cooling controlling device of an internal combustion engine of a motor vehicle
FR2952133A1 (en) Method for regulating or controlling temperature of preheater plug in diesel engine of vehicle, involves calculating value of resistance to determine temperature during non-stationary evolution of temperature in plug by using physical model
EP3894684B1 (en) Method for heating the cooling liquid of an internal combustion engine after a cold start
US6170452B1 (en) Method and apparatus for operating a locomotive engine
FR2519694A1 (en) Economical hydraulic cooling circuit for motor vehicle engine - uses continuously running electrically driven coolant pump and higher power pump connected to engine through clutch when temp. is high
CN107407217B (en) Hair protection motivation in automatic stop/start applications
EP3217010B1 (en) Method for controlling the preheating plugs of an engine
EP3120012B1 (en) Method of controlling operation of a starter of a combustion engine in order to prevent a possible overheat during the start
FR3029847A1 (en) METHOD FOR CONTROLLING THE TEMPERATURE IN THE HABITACLE OF A HYBRID TRACTION VEHICLE
EP3504465B1 (en) Method for preventing a belt that connects a starter member to an engine from slipping as a result of ice
FR2960592A1 (en) Method for starting engine i.e. gas turbine engine, of aircraft under extremely cold conditions, involves pre-heating oil of lubrication circuit, and driving engine with electric starter at speed higher than threshold speed
RU2442126C2 (en) Method for monitoring gas turbine engine technical condition
FR3055584A1 (en) METHOD FOR ESTIMATING THE AMBIENT TEMPERATURE OF AN AUTOMOTIVE VEHICLE HOOD
US6561015B1 (en) Model-based method of estimating crankcase oil pressure in an internal combustion engine
EP1403107A1 (en) Air conditioner with an electronic control device
FR2857913A1 (en) Internal combustion engine e.g. petrol engine, controlling method for vehicle, involves regulating emergency operation according to quality criteria value, and selecting characteristic quantity of engine oil supply
EP3732353A1 (en) Method for starting a turbine engine in cold weather and system for starting a turbine engine
JP2006207457A (en) Control device of rotary electric equipment
FR3031139A1 (en) METHOD FOR CONTROLLING THE LUBRICATING OIL TEMPERATURE OF AN ENGINE

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20210517

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20220927

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R084

Ref document number: 602019024621

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602019024621

Country of ref document: DE

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1544841

Country of ref document: AT

Kind code of ref document: T

Effective date: 20230215

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REG Reference to a national code

Ref country code: GB

Ref legal event code: 746

Effective date: 20230213

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20230118

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1544841

Country of ref document: AT

Kind code of ref document: T

Effective date: 20230118

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230118

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230118

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230518

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230418

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230118

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230118

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230118

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230118

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230118

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230118

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230118

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230518

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230419

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230118

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602019024621

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230118

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230118

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230118

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230118

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230118

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230118

RAP4 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: STELLANTIS AUTO SAS

26N No opposition filed

Effective date: 20231019

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20231019

Year of fee payment: 5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230118

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20231019

Year of fee payment: 5

Ref country code: DE

Payment date: 20231019

Year of fee payment: 5

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 602019024621

Country of ref document: DE

Owner name: STELLANTIS AUTO SAS, FR

Free format text: FORMER OWNER: PSA AUTOMOBILES SA, POISSY, FR