[go: up one dir, main page]

EP2187015B1 - Engine cooling circuit - Google Patents

Engine cooling circuit Download PDF

Info

Publication number
EP2187015B1
EP2187015B1 EP09173401A EP09173401A EP2187015B1 EP 2187015 B1 EP2187015 B1 EP 2187015B1 EP 09173401 A EP09173401 A EP 09173401A EP 09173401 A EP09173401 A EP 09173401A EP 2187015 B1 EP2187015 B1 EP 2187015B1
Authority
EP
European Patent Office
Prior art keywords
radiator
outlet
cooling circuit
thermostatic valve
cooling
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.)
Ceased
Application number
EP09173401A
Other languages
German (de)
French (fr)
Other versions
EP2187015A1 (en
Inventor
Pierre Dumoulin
Armel Le Lièvre
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Publication of EP2187015A1 publication Critical patent/EP2187015A1/en
Application granted granted Critical
Publication of EP2187015B1 publication Critical patent/EP2187015B1/en
Ceased legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/028—Deaeration devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/0285—Venting devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/029—Expansion reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/08—Cabin heater

Definitions

  • the invention relates to the cooling circuits of motor vehicle engines, and in particular the degassing of the heated coolant from the engine.
  • a known motor vehicle engine cooling system includes a water outlet housing having a temperature probe and a thermostat.
  • the water outlet housing includes an outlet main line for conveying the coolant to a radiator whose function is to cool the liquid.
  • the coolant thus cooled is then conveyed by means of a pipe to the inlet of a degassing box.
  • the degassing box makes it possible to remove gas bubbles present in the coolant. Gas bubbles appear in the coolant in particular during a filling fault or during a malfunction of the engine.
  • the degassed coolant is then piped to the inlet of a water pump located upstream of the engine. The pump helps to circulate the cooled coolant in the engine and the thus-heated coolant is then recovered in the water outlet housing.
  • the water outlet housing includes a first coolant outlet pipe for supplying a heater with water and whose function is to create heating in the passenger compartment of the motor vehicle.
  • the coolant recovered at the outlet of the heater is returned to the water outlet housing.
  • the water outlet housing has a second secondary outlet pipe connecting it to the inlet of the pump, and constituting a bypass portion bypassing the radiator. This bypass portion makes it possible to directly send heated coolant from the engine to the upstream portion of the cooling circuit positioned before said engine, passing through the water outlet housing.
  • An inlet of the water outlet housing is connected to the radiator. This inlet is closed by a thermostatic valve that opens only when the coolant temperature is high. The connection between the radiator and the degassing water outlet box allows a small flow to be maintained through the radiator even when the thermostatic valve at the inlet of the water outlet housing is closed.
  • Such a cooling circuit has drawbacks.
  • coolant heating is relatively slow.
  • the heater will not be able to warm the vehicle interior sufficiently.
  • the engine takes longer to reach its optimum operating temperature.
  • the invention aims to solve these disadvantages.
  • the invention thus relates to a cooling circuit of an internal combustion engine, in particular a motor vehicle engine, comprising a cooling radiator having a coolant discharge outlet; a degassing housing having a coolant inlet connected to the exhaust outlet of the radiator; a thermostatic valve selectively sealing the flow between the radiator discharge outlet and the degassing box inlet, the thermostatic valve opening when the coolant temperature exceeds a first threshold.
  • the thermostatic valve includes a member whose thermal expansion displaces a seal and releases flow between the radiator discharge outlet and the degassing housing inlet when said coolant temperature exceeds the temperature. first threshold.
  • said member is made of wax.
  • said first threshold is between 45 and 65 ° Celsius, and preferably between 50 and 60 ° Celsius.
  • said thermostatic valve is disposed at the outlet of the radiator outlet.
  • no heat exchanger is connected between the thermostatic valve and the radiator.
  • said radiator outlet is formed in the upper part of this radiator.
  • the circuit further comprises a coolant outlet housing adapted to receive coolant from the engine; a pipe connecting the outlet box to the radiator; another thermostatic valve closing the pipe and opening when the temperature of the coolant applied to it exceeds a second threshold.
  • said conduit connects another radiator output to the output housing.
  • said second threshold is greater than the first threshold.
  • the circuit comprises a heater with an input connected to the output housing.
  • the invention proposes a cooling circuit for internal combustion engines of motor vehicles.
  • This circuit includes a cooling radiator.
  • An inlet of a degassing box is connected to a discharge outlet of the radiator.
  • a thermostatic valve selectively closes the flow between the radiator outlet and the inlet of the degassing housing. The thermostatic valve opens when the temperature of the coolant applied to it exceeds a threshold.
  • the invention makes it possible to limit the heat losses after a cold engine start.
  • the temperature rise of the engine is therefore faster. It is not necessary to degrade certain points of operation of the engine to accelerate the rise in temperature, which leads to a reduction in fuel consumption. In addition, this result is obtained with a simple solution having a particularly low additional cost.
  • the figure 1 illustrates an embodiment of a cooling circuit 1 according to the invention.
  • the arrows illustrate the flow direction of the coolant in this circuit 1.
  • An internal combustion engine 2 has nozzles intended to be traversed by coolant. These pipes run in particular through the cylinder head and the engine block 2.
  • a coolant outlet box 3 is intended to collect the coolant having passed through the tubes of the engine 2.
  • An output of the output box 3 is connected to an inlet a main radiator 7 through a pipe 6.
  • the main radiator 7 is intended to evacuate the heat of the coolant therethrough, by heat exchange with fresh air taken from the outside of the vehicle.
  • a first output of the radiator 7 is connected to an input of the output box 3, via a line 9.
  • a thermostatic valve 5 is disposed on this input of the output box 3, and selectively closes the flow of liquid In a manner known per se, the thermostatic valve 5 opens at a temperature of about 90 ° Celsius to allow the flow of the cooling liquid inside the radiator 7.
  • a bypass line 20 connects an outlet of the outlet box 3 to an inlet of a delivery pump 8.
  • the pump 8 delivers cooling liquid into the tubes of the engine 2 and thus causes the cooling liquid in the circuit 1.
  • the radiator 7 has a second output.
  • This second outlet is advantageously formed in the upper part of the radiator 7.
  • This second outlet makes it possible to discharge cooling liquid to a degassing box 18.
  • the second outlet is connected to the inlet of the degassing box 18 via of a pipe 17.
  • a thermostatic valve 4 selectively closes the flow in the pipe 17. When the temperature of the coolant that is applied to this valve 4 exceeds a first threshold, the valve 4 opens to allow the flow between the radiator 7 and the degassing housing 18.
  • An outlet of the degassing housing 18 is connected to an inlet of the pump 8 via a pipe 19.
  • the thermostatic valve 4 As long as the temperature of the coolant applied to the thermostatic valve 4 is lower than the first threshold, the flow through the degassing housing 18 is blocked. Thus, the thermostatic valve 4 will be kept closed when the engine 2 will be cold. The volume of the coolant that the engine 2 will heat up will be reduced. The cooling rate of the coolant will be increased.
  • the thermostatic valve 4 may comprise, in a manner known per se, a member whose thermal expansion displaces a seal and releases the flow between the outlet of the radiator 7 and the inlet of the degassing box 18 beyond said first threshold of temperature.
  • This organ may for example be made of wax.
  • the figure 2 is a sectional view of an example of a thermostatic valve 4.
  • This thermostatic valve 4 has a piston 41 actuated by the expansion of a wax cartridge 43.
  • the wax cartridge 43 is disposed inside the pipe 17, oriented towards its upstream part.
  • the piston 41 moves the piston 41 when the temperature of this liquid crosses the first threshold.
  • the piston 41 is moved (on the right side of the figure 2 )
  • the coolant can then flow as illustrated by the arrow in broken lines.
  • a spring 44 reminds the membrane 42 to its contact position (on the left side of the figure 2 ) with the seat 45 when the coolant temperature is below said threshold.
  • the wax cartridge 43 protrudes inside the radiator, in order to detect as soon as possible an increase in temperature.
  • the thermostatic valve 4 will preferably be fixed directly on the radiator 7.
  • the opening threshold of the thermostatic valve 4 is advantageously between 45 and 65 ° Celsius, and preferably between 50 and 60 ° Celsius. For such a temperature level, the coolant has been heated sufficiently and the opening of the thermostatic valve 4 will then ensure a safety against the presence of gas in the coolant.
  • the thermostatic valve 4 is placed at the exhaust outlet of the radiator 7.
  • the temperature of the coolant applied to the thermostatic valve 4 will be more rapidly representative of the temperature of this liquid at the outlet of the outlet housing 3.
  • the cooling circuit 1 does not have a heat exchanger connected between the thermostatic valve 4 and the radiator 7.
  • the opening temperature of the thermostatic valve 5 is preferably greater than the opening temperature of the thermostatic valve 4. Thus, as soon as the thermostatic valve 5 is open, the thermostatic valve 4 will open quickly when the thermostatic valve 5 is opened. coolant temperature rise in the radiator 7.
  • the cooling circuit 1 comprises a heater 11.
  • This heater 11 is connected to the outlet housing 3 via conduits 10 and 16.
  • This heater 11 comprises an exchanger intended to supply the passenger compartment with air heated by the liquid. cooling. Due to the closing of the thermostatic valve 4 when the engine 2 is cold, the temperature of the coolant passing through the heater increases more rapidly. Thus, the heating of the cabin will intervene more quickly, without requiring overconsumption of fuel.
  • FIGS. 3 to 5 schematically represent the hydraulic connections in the cooling circuit 1 in different cases of operation.
  • engine 2 is cold.
  • the coolant has a temperature below the opening temperature of the valve 5.
  • the valve 5 remains closed and no flow takes place in the radiator.
  • the coolant also has a temperature below the opening temperature of the valve 4.
  • the valve 4 remains closed.
  • the temperature of the coolant in the outlet housing 3 exceeds the opening threshold of the valve 5.
  • the valve 5 opens and releases the flow of coolant in the radiator 7.
  • the coolant applied to the thermostatic valve 4 has a temperature below the opening threshold. The thermostatic valve 4 thus remains initially closed.
  • the temperature of the coolant in the radiator 7 increases, due to the circulation of coolant.
  • the coolant applied to the thermostatic valve 4 then has a temperature above the opening threshold.
  • the thermostatic valve 4 thus opens and allows the flow of cooling liquid from the radiator 7 to the degassing box 18.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Temperature-Responsive Valves (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

The circuit (1) has cooling radiator (7) comprising a discharging outlet to discharge a cooling liquid. A cooling liquid inlet of a degassing case (18) is connected to the outlet of the radiator. A thermostatic valve (4) selectively blocks the flow of the liquid between the outlet of the radiator and the inlet of the case. The valve is opened when the temperature of the liquid exceeds a threshold value. A thermal expansion of cartridge of the valve releases the flow of the liquid between the outlet of the radiator and the inlet of the case when the temperature of the liquid exceeds the value.

Description

L'invention concerne les circuits de refroidissement de moteurs de véhicules automobiles, et en particulier le dégazage du liquide de refroidissement réchauffé en provenance du moteur.The invention relates to the cooling circuits of motor vehicle engines, and in particular the degassing of the heated coolant from the engine.

Un circuit de refroidissement de moteur de véhicule automobile connu comprend un boîtier de sortie d'eau muni d'une sonde de température et d'un thermostat. Le boîtier de sortie d'eau comprend une canalisation principale de sortie pour transporter le liquide de refroidissement vers un radiateur dont la fonction est de refroidir ce liquide. Le liquide de refroidissement ainsi refroidi est ensuite acheminé au moyen d'une canalisation vers l'entrée d'un boîtier de dégazage. Le boîtier de dégazage permet de retirer des bulles de gaz présentes dans le liquide de refroidissement. Des bulles de gaz apparaissent dans le liquide de refroidissement notamment lors d'un défaut de remplissage ou lors d'un dysfonctionnement du moteur. Le liquide de refroidissement dégazé est ensuite acheminé au moyen d'une canalisation vers l'entrée d'une pompe à eau située en amont du moteur. La pompe contribue à faire circuler le liquide de refroidissement refroidi dans le moteur et le liquide de refroidissement ainsi réchauffé est ensuite récupéré dans le boîtier de sortie d'eau. Le boîtier de sortie d'eau comporte une première canalisation secondaire de sortie de liquide de refroidissement destinée à alimenter un aérotherme en eau et dont la fonction est de créer du chauffage dans l'habitacle du véhicule automobile. Le liquide de refroidissement récupéré à la sortie de l'aérotherme est ramené dans le boîtier de sortie d'eau. Le boîtier de sortie d'eau possède une deuxième canalisation secondaire de sortie le reliant à l'entrée de la pompe, et constituant une portion de dérivation court-circuitant le radiateur. Cette portion de dérivation permet d'envoyer directement du liquide de refroidissement réchauffé en provenance du moteur vers la partie amont du circuit de refroidissement positionnée avant ledit moteur, en traversant le boîtier de sortie d'eau. Une entrée du boîtier de sortie d'eau est raccordée au radiateur. Cette entrée est obturée par une vanne thermostatique s'ouvrant seulement lorsque la température du liquide de refroidissement est élevée. La connexion entre le radiateur et le boîtier de sortie d'eau de dégazage permet de maintenir un faible écoulement à travers le radiateur même lorsque la vanne thermostatique placée à l'entrée du boîtier de sortie d'eau est fermée.A known motor vehicle engine cooling system includes a water outlet housing having a temperature probe and a thermostat. The water outlet housing includes an outlet main line for conveying the coolant to a radiator whose function is to cool the liquid. The coolant thus cooled is then conveyed by means of a pipe to the inlet of a degassing box. The degassing box makes it possible to remove gas bubbles present in the coolant. Gas bubbles appear in the coolant in particular during a filling fault or during a malfunction of the engine. The degassed coolant is then piped to the inlet of a water pump located upstream of the engine. The pump helps to circulate the cooled coolant in the engine and the thus-heated coolant is then recovered in the water outlet housing. The water outlet housing includes a first coolant outlet pipe for supplying a heater with water and whose function is to create heating in the passenger compartment of the motor vehicle. The coolant recovered at the outlet of the heater is returned to the water outlet housing. The water outlet housing has a second secondary outlet pipe connecting it to the inlet of the pump, and constituting a bypass portion bypassing the radiator. This bypass portion makes it possible to directly send heated coolant from the engine to the upstream portion of the cooling circuit positioned before said engine, passing through the water outlet housing. An inlet of the water outlet housing is connected to the radiator. This inlet is closed by a thermostatic valve that opens only when the coolant temperature is high. The connection between the radiator and the degassing water outlet box allows a small flow to be maintained through the radiator even when the thermostatic valve at the inlet of the water outlet housing is closed.

Un tel circuit de refroidissement présente des inconvénients. Lorsque le moteur est froid et que la température extérieure est basse, le chauffage du liquide de refroidissement est relativement lent. Par conséquent, l'aérotherme ne pourra pas réchauffer suffisamment l'habitacle du véhicule. De plus, le moteur met plus de temps à atteindre sa température optimale de fonctionnement.Such a cooling circuit has drawbacks. When the engine is cold and the outside temperature is low, coolant heating is relatively slow. As a result, the heater will not be able to warm the vehicle interior sufficiently. In addition, the engine takes longer to reach its optimum operating temperature.

Afin d'accélérer le réchauffage initial du liquide de refroidissement et d'améliorer l'efficacité de l'aérotherme, il est connu de dégrader le rendement de la combustion pour certains points de fonctionnement du moteur.In order to accelerate the initial heating of the coolant and to improve the efficiency of the heater, it is known to degrade the combustion efficiency for certain operating points of the engine.

Cette technique s'accompagne cependant d'une surconsommation pouvant atteindre 20 % sur ces points de fonctionnement. Une telle surconsommation est coûteuse pour l'utilisateur et nuisible à l'environnement. Il existe un besoin pour une solution simple et économique permettant d'éviter une telle surconsommation.This technique is, however, accompanied by overconsumption of up to 20% at these operating points. Such overconsumption is expensive for the user and harmful to the environment. There is a need for a simple and economical solution to avoid such overconsumption.

L'invention vise à résoudre ces inconvénients. L'invention porte ainsi sur un circuit de refroidissement d'un moteur à combustion interne, notamment un moteur de véhicule automobile, comprenant un radiateur de refroidissement présentant une sortie d'évacuation de liquide de refroidissement ; un boîtier de dégazage présentant une entrée de liquide de refroidissement raccordée à la sortie d'évacuation du radiateur ; une vanne thermostatique obturant sélectivement l'écoulement entre la sortie d'évacuation du radiateur et l'entrée du boîtier de dégazage, la vanne thermostatique s'ouvrant lorsque la température du liquide de refroidissement dépasse un premier seuil.The invention aims to solve these disadvantages. The invention thus relates to a cooling circuit of an internal combustion engine, in particular a motor vehicle engine, comprising a cooling radiator having a coolant discharge outlet; a degassing housing having a coolant inlet connected to the exhaust outlet of the radiator; a thermostatic valve selectively sealing the flow between the radiator discharge outlet and the degassing box inlet, the thermostatic valve opening when the coolant temperature exceeds a first threshold.

Selon une variante, la vanne thermostatique comprend un organe dont la dilatation thermique déplace un joint d'étanchéité et libère l'écoulement entre la sortie d'évacuation du radiateur et l'entrée du boîtier de dégazage lorsque ladite température du liquide de refroidissement dépasse le premier seuil.Alternatively, the thermostatic valve includes a member whose thermal expansion displaces a seal and releases flow between the radiator discharge outlet and the degassing housing inlet when said coolant temperature exceeds the temperature. first threshold.

Selon encore une variante, ledit organe est réalisé en cire.According to another variant, said member is made of wax.

Selon une autre variante, ledit premier seuil est compris entre 45 et 65°Celsius, et de préférence comprise entre 50 et 60° Celsius.According to another variant, said first threshold is between 45 and 65 ° Celsius, and preferably between 50 and 60 ° Celsius.

Selon encore une autre variante, ladite vanne thermostatique est disposée au niveau de la sortie d'évacuation du radiateur.According to yet another variant, said thermostatic valve is disposed at the outlet of the radiator outlet.

Selon une autre variante, aucun échangeur de chaleur n'est connecté entre la vanne thermostatique et le radiateur.According to another variant, no heat exchanger is connected between the thermostatic valve and the radiator.

Selon encore une variante, ladite sortie du radiateur est ménagée dans la partie supérieure de ce radiateur.According to another variant, said radiator outlet is formed in the upper part of this radiator.

Selon encore une autre variante, le circuit comprend en outre un boîtier de sortie de liquide de refroidissement apte à recevoir du liquide de refroidissement en provenance du moteur ; une conduite raccordant le boîtier de sortie au radiateur ; une autre vanne thermostatique obturant la conduite et s'ouvrant lorsque la température du liquide de refroidissement qui lui est appliqué dépasse un deuxième seuil.According to yet another variant, the circuit further comprises a coolant outlet housing adapted to receive coolant from the engine; a pipe connecting the outlet box to the radiator; another thermostatic valve closing the pipe and opening when the temperature of the coolant applied to it exceeds a second threshold.

Selon une variante, ladite conduite raccorde une autre sortie du radiateur au boîtier de sortie.Alternatively, said conduit connects another radiator output to the output housing.

Selon encore une variante, ledit deuxième seuil est supérieur au premier seuil.According to another variant, said second threshold is greater than the first threshold.

Selon une autre variante, le circuit comprend un aérotherme muni d'une entrée connectée au boîtier de sortie.According to another variant, the circuit comprises a heater with an input connected to the output housing.

D'autres caractéristiques et avantages de l'invention ressortiront clairement de la description qui en est faite ci-après, à titre indicatif et nullement limitatif, en référence aux dessins annexés, dans lesquels :

  • la figure 1 est une représentation schématique d'un circuit de refroidissement selon l'invention ;
  • la figure 2 est une vue en coupe d'un exemple de vanne thermostatique dans deux positions de fonctionnement ;
  • la figure 3 représente schématiquement les connexions hydrauliques du circuit de refroidissement lorsque le moteur est froid ;
  • la figure 4 représente schématiquement les connexions hydrauliques du circuit de refroidissement au début de l'écoulement dans le radiateur ;
  • la figure 5 représente schématiquement les connexions hydrauliques du circuit de refroidissement lorsque le moteur est chaud.
Other characteristics and advantages of the invention will emerge clearly from the description which is given hereinafter, by way of indication and in no way limitative, with reference to the appended drawings, in which:
  • the figure 1 is a schematic representation of a cooling circuit according to the invention;
  • the figure 2 is a sectional view of an example of a thermostatic valve in two operating positions;
  • the figure 3 schematically represents the hydraulic connections of the cooling circuit when the engine is cold;
  • the figure 4 schematically represents the hydraulic connections of the cooling circuit at the beginning of the flow in the radiator;
  • the figure 5 schematically represents the hydraulic connections of the cooling circuit when the engine is hot.

L'invention propose un circuit de refroidissement de moteurs à combustion interne de véhicules automobiles. Ce circuit comprend un radiateur de refroidissement. Une entrée d'un boîtier de dégazage est raccordée à une sortie d'évacuation du radiateur. Une vanne thermostatique obture sélectivement l'écoulement entre la sortie du radiateur et l'entrée du boîtier de dégazage. La vanne thermostatique s'ouvre lorsque la température du liquide de refroidissement lui étant appliquée dépasse un seuil.The invention proposes a cooling circuit for internal combustion engines of motor vehicles. This circuit includes a cooling radiator. An inlet of a degassing box is connected to a discharge outlet of the radiator. A thermostatic valve selectively closes the flow between the radiator outlet and the inlet of the degassing housing. The thermostatic valve opens when the temperature of the coolant applied to it exceeds a threshold.

En interdisant au liquide de refroidissement de s'écouler vers le boîtier de dégazage, l'invention permet de limiter les déperditions de chaleur après un démarrage moteur froid. La montée en température du moteur est donc plus rapide. Il n'est alors pas nécessaire de dégrader certains points de fonctionnement du moteur pour accélérer la montée en température, ce qui induit une réduction de la consommation de carburant. De plus, ce résultat est obtenu avec une solution simple ayant un surcoût particulièrement réduit.By preventing the coolant from flowing to the degassing box, the invention makes it possible to limit the heat losses after a cold engine start. The temperature rise of the engine is therefore faster. It is not necessary to degrade certain points of operation of the engine to accelerate the rise in temperature, which leads to a reduction in fuel consumption. In addition, this result is obtained with a simple solution having a particularly low additional cost.

La figure 1 illustre un mode de réalisation d'un circuit de refroidissement 1 selon l'invention. Les flèches illustrent le sens d'écoulement du liquide de refroidissement dans ce circuit 1. Un moteur à combustion interne 2 présente des tubulures destinées à être parcourues par du liquide de refroidissement. Ces tubulures parcourent notamment la culasse et le bloc du moteur 2. Un boîtier de sortie de liquide de refroidissement 3 est destiné à collecter le liquide de refroidissement ayant traversé les tubulures du moteur 2. Une sortie du boîtier de sortie 3 est raccordée à une entrée d'un radiateur principal 7 par l'intermédiaire d'une conduite 6. Le radiateur principal 7 est destiné à évacuer les calories du liquide de refroidissement le traversant, par échange thermique avec de l'air frais prélevé à l'extérieur du véhicule. Une première sortie du radiateur 7 est raccordée à une entrée du boîtier de sortie 3, par l'intermédiaire d'une conduite 9. Une vanne thermostatique 5 est disposée sur cette entrée du boîtier de sortie 3, et obture sélectivement l'écoulement de liquide de refroidissement dans la conduite 9. De façon connue en soi, la vanne thermostatique 5 s'ouvre à une température d'environ 90° Celsius pour permettre l'écoulement du liquide de refroidissement à l'intérieur du radiateur 7.The figure 1 illustrates an embodiment of a cooling circuit 1 according to the invention. The arrows illustrate the flow direction of the coolant in this circuit 1. An internal combustion engine 2 has nozzles intended to be traversed by coolant. These pipes run in particular through the cylinder head and the engine block 2. A coolant outlet box 3 is intended to collect the coolant having passed through the tubes of the engine 2. An output of the output box 3 is connected to an inlet a main radiator 7 through a pipe 6. The main radiator 7 is intended to evacuate the heat of the coolant therethrough, by heat exchange with fresh air taken from the outside of the vehicle. A first output of the radiator 7 is connected to an input of the output box 3, via a line 9. A thermostatic valve 5 is disposed on this input of the output box 3, and selectively closes the flow of liquid In a manner known per se, the thermostatic valve 5 opens at a temperature of about 90 ° Celsius to allow the flow of the cooling liquid inside the radiator 7.

Une conduite de dérivation 20 raccorde une sortie du boîtier de sortie 3 à une entrée d'une pompe de refoulement 8. La pompe 8 refoule du liquide de refroidissement dans les tubulures du moteur 2 et entraine donc le liquide de refroidissement dans le circuit 1.A bypass line 20 connects an outlet of the outlet box 3 to an inlet of a delivery pump 8. The pump 8 delivers cooling liquid into the tubes of the engine 2 and thus causes the cooling liquid in the circuit 1.

Le radiateur 7 présente une deuxième sortie. Cette deuxième sortie est avantageusement ménagée dans la partie supérieure du radiateur 7. Cette deuxième sortie permet d'évacuer du liquide de refroidissement vers un boîtier de dégazage 18. La deuxième sortie est connectée à l'entrée du boîtier de dégazage 18 par l'intermédiaire d'une conduite 17. Une vanne thermostatique 4 obture sélectivement l'écoulement dans la conduite 17. Lorsque la température du liquide de refroidissement qui est appliqué sur cette vanne 4 dépasse un premier seuil, la vanne 4 s'ouvre pour permettre l'écoulement entre le radiateur 7 et le boîtier de dégazage 18. Une sortie du boîtier de dégazage 18 est raccordée à une entrée de la pompe 8 par l'intermédiaire d'une conduite 19.The radiator 7 has a second output. This second outlet is advantageously formed in the upper part of the radiator 7. This second outlet makes it possible to discharge cooling liquid to a degassing box 18. The second outlet is connected to the inlet of the degassing box 18 via of a pipe 17. A thermostatic valve 4 selectively closes the flow in the pipe 17. When the temperature of the coolant that is applied to this valve 4 exceeds a first threshold, the valve 4 opens to allow the flow between the radiator 7 and the degassing housing 18. An outlet of the degassing housing 18 is connected to an inlet of the pump 8 via a pipe 19.

Tant que la température du liquide de refroidissement appliqué sur la vanne thermostatique 4 est inférieure au premier seuil, l'écoulement à travers le boîtier de dégazage 18 est bloqué. Ainsi, la vanne thermostatique 4 sera maintenue fermée lorsque le moteur 2 sera froid. Le volume du liquide de refroidissement que le moteur 2 devra réchauffer sera ainsi réduit. La vitesse de réchauffage du liquide de refroidissement sera ainsi accrue.As long as the temperature of the coolant applied to the thermostatic valve 4 is lower than the first threshold, the flow through the degassing housing 18 is blocked. Thus, the thermostatic valve 4 will be kept closed when the engine 2 will be cold. The volume of the coolant that the engine 2 will heat up will be reduced. The cooling rate of the coolant will be increased.

La vanne thermostatique 4 pourra comprendre de façon connue en soi un organe dont la dilatation thermique déplace un joint d'étanchéité et libère l'écoulement entre la sortie du radiateur 7 et l'entrée du boîtier de dégazage 18 au-delà dudit premier seuil de température. Cet organe pourra par exemple être réalisé en cire.The thermostatic valve 4 may comprise, in a manner known per se, a member whose thermal expansion displaces a seal and releases the flow between the outlet of the radiator 7 and the inlet of the degassing box 18 beyond said first threshold of temperature. This organ may for example be made of wax.

La figure 2 est une vue en coupe d'un exemple de vanne thermostatique 4. Cette vanne thermostatique 4 présente un piston 41 actionné par la dilatation d'une cartouche de cire 43. La cartouche de cire 43 est disposée à l'intérieur de la conduite 17, orientée vers sa partie amont. Lorsque la cartouche de cire 43 est plongée dans le liquide de refroidissement, elle déplace le piston 41 lorsque la température de ce liquide franchit le premier seuil. Lorsque le piston 41 est déplacé (sur la partie droite de la figure 2), il écarte une membrane 42 d'un siège 45. Le liquide de refroidissement peut alors s'écouler comme illustré par la flèche en traits discontinus. Un ressort 44 rappelle la membrane 42 vers sa position de contact (sur la partie gauche de la figure 2) avec le siège 45 lorsque la température du liquide de refroidissement est inférieure audit seuil. Avantageusement, la cartouche de cire 43 fait saillie à l'intérieur même du radiateur, afin de détecter le plus tôt possible une augmentation de température. La vanne thermostatique 4 sera de préférence fixée directement sur le radiateur 7.The figure 2 is a sectional view of an example of a thermostatic valve 4. This thermostatic valve 4 has a piston 41 actuated by the expansion of a wax cartridge 43. The wax cartridge 43 is disposed inside the pipe 17, oriented towards its upstream part. When the wax cartridge 43 is immersed in the coolant, it moves the piston 41 when the temperature of this liquid crosses the first threshold. When the piston 41 is moved (on the right side of the figure 2 ), it spreads a membrane 42 of a seat 45. The coolant can then flow as illustrated by the arrow in broken lines. A spring 44 reminds the membrane 42 to its contact position (on the left side of the figure 2 ) with the seat 45 when the coolant temperature is below said threshold. Advantageously, the wax cartridge 43 protrudes inside the radiator, in order to detect as soon as possible an increase in temperature. The thermostatic valve 4 will preferably be fixed directly on the radiator 7.

Le seuil d'ouverture de la vanne thermostatique 4 est avantageusement compris entre 45 et 65° Celsius, et de préférence compris entre 50 et 60° Celsius. Pour un tel niveau de température, le liquide de refroidissement aura été suffisamment réchauffé et l'ouverture de la vanne thermostatique 4 garantira alors une sécurité contre la présence de gaz dans le liquide de refroidissement.The opening threshold of the thermostatic valve 4 is advantageously between 45 and 65 ° Celsius, and preferably between 50 and 60 ° Celsius. For such a temperature level, the coolant has been heated sufficiently and the opening of the thermostatic valve 4 will then ensure a safety against the presence of gas in the coolant.

Dans l'exemple, la vanne thermostatique 4 est placée au niveau de la sortie d'évacuation du radiateur 7. Ainsi, la température du liquide de refroidissement appliqué sur la vanne thermostatique 4 sera plus rapidement représentative de la température de ce liquide à la sortie du boîtier de sortie 3. Afin de garantir une température suffisante du liquide de refroidissement pour obtenir l'ouverture de la vanne thermostatique 4, avantageusement, le circuit de refroidissement 1 ne présente pas d'échangeur de chaleur connecté entre la vanne thermostatique 4 et le radiateur 7.In the example, the thermostatic valve 4 is placed at the exhaust outlet of the radiator 7. Thus, the temperature of the coolant applied to the thermostatic valve 4 will be more rapidly representative of the temperature of this liquid at the outlet of the outlet housing 3. In order to guarantee a sufficient temperature of the coolant to obtain the opening of the thermostatic valve 4, advantageously, the cooling circuit 1 does not have a heat exchanger connected between the thermostatic valve 4 and the radiator 7.

La température d'ouverture de la vanne thermostatique 5 est de préférence supérieure à la température d'ouverture de la vanne thermostatique 4. Ainsi, dès lors que la vanne thermostatique 5 sera ouverte, la vanne thermostatique 4 s'ouvrira rapidement lors de l'élévation de température du liquide de refroidissement dans le radiateur 7.The opening temperature of the thermostatic valve 5 is preferably greater than the opening temperature of the thermostatic valve 4. Thus, as soon as the thermostatic valve 5 is open, the thermostatic valve 4 will open quickly when the thermostatic valve 5 is opened. coolant temperature rise in the radiator 7.

Le circuit de refroidissement 1 comprend un aérotherme 11. Cet aérotherme 11 est raccordé au boîtier de sortie 3 par l'intermédiaire de conduites 10 et 16. Cet aérotherme 11 comprend un échangeur destiné à alimenter l'habitacle du véhicule en air réchauffé par le liquide de refroidissement. Du fait de la fermeture de la vanne thermostatique 4 lorsque le moteur 2 est froid, la température du liquide de refroidissement traversant l'aérotherme augmente plus rapidement. Ainsi, le réchauffage de l'habitacle interviendra plus rapidement, sans nécessiter une surconsommation de carburant.The cooling circuit 1 comprises a heater 11. This heater 11 is connected to the outlet housing 3 via conduits 10 and 16. This heater 11 comprises an exchanger intended to supply the passenger compartment with air heated by the liquid. cooling. Due to the closing of the thermostatic valve 4 when the engine 2 is cold, the temperature of the coolant passing through the heater increases more rapidly. Thus, the heating of the cabin will intervene more quickly, without requiring overconsumption of fuel.

Les figures 3 à 5 représentent schématiquement les connexions hydrauliques dans le circuit de refroidissement 1 dans différents cas de fonctionnement. À la figure 3, le moteur 2 est froid. Le liquide de refroidissement a une température inférieure à la température d'ouverture de la vanne 5. La vanne 5 reste donc fermée et aucun écoulement n'a lieu dans le radiateur. Le liquide de refroidissement a également une température inférieure à la température d'ouverture de la vanne 4. La vanne 4 reste donc fermée.The Figures 3 to 5 schematically represent the hydraulic connections in the cooling circuit 1 in different cases of operation. To the figure 3 , engine 2 is cold. The coolant has a temperature below the opening temperature of the valve 5. The valve 5 remains closed and no flow takes place in the radiator. The coolant also has a temperature below the opening temperature of the valve 4. The valve 4 remains closed.

À la figure 4, la température du liquide de refroidissement dans le boîtier de sortie 3 dépasse le seuil d'ouverture de la vanne 5. La vanne 5 s'ouvre donc et libère l'écoulement de liquide de refroidissement dans le radiateur 7. Au début de cet écoulement, le liquide de refroidissement appliqué sur la vanne thermostatique 4 a une température inférieure au seuil d'ouverture. La vanne thermostatique 4 reste donc initialement fermée.To the figure 4 , the temperature of the coolant in the outlet housing 3 exceeds the opening threshold of the valve 5. The valve 5 opens and releases the flow of coolant in the radiator 7. At the beginning of this flow , the coolant applied to the thermostatic valve 4 has a temperature below the opening threshold. The thermostatic valve 4 thus remains initially closed.

À la figure 5, la température du liquide de refroidissement dans le radiateur 7 augmente, du fait de la circulation de liquide de refroidissement. Le liquide de refroidissement appliqué sur la vanne thermostatique 4 a alors une température supérieure au seuil d'ouverture. La vanne thermostatique 4 s'ouvre donc et permet l'écoulement de liquide de refroidissement du radiateur 7 vers le boîtier de dégazage 18.To the figure 5 , the temperature of the coolant in the radiator 7 increases, due to the circulation of coolant. The coolant applied to the thermostatic valve 4 then has a temperature above the opening threshold. The thermostatic valve 4 thus opens and allows the flow of cooling liquid from the radiator 7 to the degassing box 18.

Claims (11)

  1. A cooling circuit (1) of an internal combustion engine (2), comprising a cooling radiator (7) having a discharging outlet for cooling liquid; a degassing case (18) having an inlet for cooling liquid connected to the discharging outlet of the radiator; characterized in that it further comprises a thermostatic valve (4) selectively blocking the flow between the discharging outlet of the radiator and the inlet of the degassing case, with the thermostatic valve (4) opening when the temperature of the cooling liquid exceeds a first threshold.
  2. The cooling circuit (1) according to Claim 1, in which the thermostatic valve (4) comprises a member (43), the thermal expansion of which displaces a tightness joint (42) and releases the flow between the discharging outlet of the radiator and the inlet of the degassing case when the said temperature of the cooling liquid exceeds the first threshold.
  3. The cooling circuit (1) according to Claim 2, in which the said member (43) is made of wax.
  4. The cooling circuit (1) according to any one of the preceding claims, in which the said first threshold is comprised between 45 and 65° Celsius, and preferably comprised between 50 and 60° Celsius.
  5. The cooling circuit according to any one of the preceding claims, in which the said thermostatic valve (4) is disposed at the level of the discharging outlet of the radiator (7).
  6. The cooling circuit according to any one of the preceding claims, in which no heat exchanger is connected between the thermostatic valve (4) and the radiator (7).
  7. The cooling circuit according to any one of the preceding claims, in which the said outlet of the radiator (7) is arranged in the upper part of this radiator.
  8. The cooling circuit according to any one of the preceding claims, further comprising an outlet case (3) for cooling liquid suited to receive cooling liquid originating from the engine (2); a duct (9) connecting the outlet case (3) to the radiator (7); another thermostatic valve (5) selectively blocking the duct (9) and opening when the temperature of the cooling liquid which is applied to it exceeds a second threshold.
  9. The cooling circuit according to Claim 8, in which the said duct (9) connects another outlet of the radiator (7) to the outlet case (3).
  10. The cooling circuit according to Claim 8 or Claim 9, in which the said second threshold is greater than the first threshold.
  11. The cooling circuit according to any one of Claims 8 to 10, comprising an air heater (11) provided with an inlet connected to the outlet case (3).
EP09173401A 2008-11-13 2009-10-19 Engine cooling circuit Ceased EP2187015B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0857676A FR2938298B1 (en) 2008-11-13 2008-11-13 ENGINE COOLING CIRCUIT

Publications (2)

Publication Number Publication Date
EP2187015A1 EP2187015A1 (en) 2010-05-19
EP2187015B1 true EP2187015B1 (en) 2011-12-07

Family

ID=40637137

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09173401A Ceased EP2187015B1 (en) 2008-11-13 2009-10-19 Engine cooling circuit

Country Status (3)

Country Link
EP (1) EP2187015B1 (en)
AT (1) ATE536471T1 (en)
FR (1) FR2938298B1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3716555A1 (en) * 1987-05-18 1988-12-08 Bayerische Motoren Werke Ag FILLING, VENTILATION AND PRESSURE CONTROL DEVICE FOR THE LIQUID COOLING CIRCUIT OF ENGINE AND WORKING MACHINES, IN PARTICULAR COMBUSTION ENGINES
FR2640315B1 (en) * 1988-12-14 1991-02-08 Peugeot INTERNAL COMBUSTION COOLING DEVICE
US5241926A (en) * 1991-08-09 1993-09-07 Mazda Motor Corporation Engine cooling apparatus
FR2804722B1 (en) * 2000-02-03 2002-03-08 Peugeot Citroen Automobiles Sa COOLING DEVICE OF A MOTOR VEHICLE ENGINE
FR2908830B1 (en) * 2006-11-16 2008-12-19 Renault Sas DEVICE AND METHOD FOR DRAINING A THERMAL EXCHANGER FOR RECYCLING EXHAUST GASES IN A DIESEL ENGINE

Also Published As

Publication number Publication date
FR2938298B1 (en) 2010-11-12
FR2938298A1 (en) 2010-05-14
ATE536471T1 (en) 2011-12-15
EP2187015A1 (en) 2010-05-19

Similar Documents

Publication Publication Date Title
EP2112347B1 (en) Engine cooling circuit
FR2809451A1 (en) HEAT ENGINE WITH COOLING CIRCUIT AND HEAT EXCHANGER, CONNECTED TO SAME
EP2069620A2 (en) Device for distributing cooling fluid in a motor vehicle engine
FR2745033A1 (en) COOLING SYSTEM FOR AN INTERNAL COMBUSTION ENGINE
FR2642012A1 (en) DEVICE FOR HEATING AUTOMOTIVE VEHICLES EQUIPPED WITH AN INTERNAL COMBUSTION ENGINE, IN PARTICULAR BUS
FR2938297A1 (en) ENGINE COOLING CIRCUIT
FR2844224A1 (en) SYSTEM FOR COOLING A HYBRID DRIVE CHAIN FOR A MOTOR VEHICLE.
FR3036135A1 (en) ENGINE COOLING CIRCUIT
WO2008029029A1 (en) Device for distributing cooling fluid in a motor vehicle engine
EP2187015B1 (en) Engine cooling circuit
FR2949509A1 (en) Internal combustion engine for motor vehicle i.e. passenger car, has thermostatic valve comprising thermally expandable member immersed in coolant, where temperature of expandable member is above threshold while releasing flow of coolant
WO2014167199A1 (en) Cooling circuit for an internal combustion engine
FR2914026A1 (en) Air intake device for use in internal combustion engine of motor vehicle, has heating unit i.e. resistive heater, is arranged near zone of duct to melt ice formed in zone, and fixed on duct
FR2890697A1 (en) MOTOR VEHICLE COMPRISING RECIRCULATED GAS CIRCUIT COOLED AT LOW TEMPERATURE
FR2914356A1 (en) SYSTEM AND METHOD FOR COOLING A MOTOR POWERTRAIN OF A MOTOR VEHICLE.
FR2932845A1 (en) Heat engine cooling method for vehicle, involves delivering part of heat-transfer liquid to heat-transfer liquid inlet from cooling cavities of cylinder head with respect to temperature of heat-transfer liquid so as to exit pump
EP4069956B1 (en) Heat transfer circuit for a drivetrain
FR2949508A1 (en) Internal combustion engine for motor vehicle, has heating unit heating rod, where application of electric drive on heating unit provokes connection of low temperature circuit with high temperature circuit and casing
EP3411572A1 (en) Method for protecting a coolant circuit of an engine against an internal overpressure
EP2090763B1 (en) Engine cooling circuit
FR3064674A1 (en) THERMAL MANAGEMENT DEVICE OF A MOTOR VEHICLE POWERTRAIN
FR3121955A1 (en) METHOD AND DEVICE FOR DEGASING SEVERAL COOLING CIRCUITS OF A MOTOR VEHICLE
FR3002281A1 (en) Cooling circuit for thermal engine of car, has thermostatic valve located in inlet manifold upstream of feed pump, where valve blocks flow of coolant in inlet manifold as long as coolant temperature is below threshold temperature
FR2757800A1 (en) COCKPIT HEATING SYSTEM FOR A DIRECT INJECTION DIESEL ENGINE MOTOR VEHICLE
WO2010031934A1 (en) Thermal regulation device for an engine

Legal Events

Date Code Title Description
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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): 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 SE SI SK SM TR

AX Request for extension of the european patent

Extension state: AL BA RS

17P Request for examination filed

Effective date: 20101014

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): 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 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: CH

Ref legal event code: EP

REG Reference to a national code

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: DE

Ref legal event code: R096

Ref document number: 602009004052

Country of ref document: DE

Effective date: 20120301

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20111207

REG Reference to a national code

Ref country code: GB

Ref legal event code: 746

Effective date: 20120305

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

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: 20111207

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: 20120307

LTIE Lt: invalidation of european patent or patent extension

Effective date: 20111207

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

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: 20120308

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: 20111207

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: 20111207

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: 20111207

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: 20111207

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: 20111207

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

Ref country code: CY

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: 20111207

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

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

Ref country code: IE

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: 20111207

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: 20111207

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: 20120407

Ref country code: BG

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: 20120307

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: 20111207

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: 20111207

REG Reference to a national code

Ref country code: DE

Ref legal event code: R084

Ref document number: 602009004052

Country of ref document: DE

Effective date: 20120301

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

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: 20111207

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: 20111207

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: 20120409

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 536471

Country of ref document: AT

Kind code of ref document: T

Effective date: 20111207

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: 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: 20111207

26N No opposition filed

Effective date: 20120910

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

Ref country code: IT

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: 20111207

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602009004052

Country of ref document: DE

Effective date: 20120910

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

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: 20111207

BERE Be: lapsed

Owner name: PEUGEOT CITROEN AUTOMOBILES SA

Effective date: 20121031

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

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: 20120318

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

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121031

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

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: 20111207

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

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121031

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

Ref country code: MT

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: 20111207

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

Ref country code: GB

Payment date: 20130923

Year of fee payment: 5

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

Ref country code: TR

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: 20111207

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: 20111207

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121019

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131031

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131031

Ref country code: HU

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: 20091019

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20141019

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

Ref country code: MK

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: 20111207

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20141019

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 8

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

Ref country code: DE

Payment date: 20160922

Year of fee payment: 8

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 9

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602009004052

Country of ref document: DE

REG Reference to a national code

Ref country code: FR

Ref legal event code: CA

Effective date: 20180312

Ref country code: FR

Ref legal event code: CD

Owner name: PEUGEOT CITROEN AUTOMOBILES SA, FR

Effective date: 20180312

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

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180501

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 10

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

Ref country code: FR

Payment date: 20190919

Year of fee payment: 11

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

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201031