EP3258078B1 - Kühlsystem eines wärmekraftmotors - Google Patents

Kühlsystem eines wärmekraftmotors Download PDF

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Publication number
EP3258078B1
EP3258078B1 EP17175805.5A EP17175805A EP3258078B1 EP 3258078 B1 EP3258078 B1 EP 3258078B1 EP 17175805 A EP17175805 A EP 17175805A EP 3258078 B1 EP3258078 B1 EP 3258078B1
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EP
European Patent Office
Prior art keywords
circuit
engine
cooling system
cylinder head
crankcase
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EP17175805.5A
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English (en)
French (fr)
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EP3258078A1 (de
Inventor
Guillaume Morin
Vincent PRUVOT
Olivier Bernard
Stéphane Ruby
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Renault SAS
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Renault SAS
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Publication of EP3258078A1 publication Critical patent/EP3258078A1/de
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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
    • F01P3/00—Liquid cooling
    • F01P3/02—Arrangements for cooling cylinders or cylinder heads
    • 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
    • F01P3/00—Liquid cooling
    • F01P3/02—Arrangements for cooling cylinders or cylinder heads
    • F01P2003/027—Cooling cylinders and cylinder heads in parallel
    • 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
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P2007/146—Controlling of coolant flow the coolant being liquid using valves

Definitions

  • the present invention relates to a cooling system of a heat engine.
  • the invention also relates to a heat engine comprising such a cooling system and a method of manufacturing such a motor.
  • the invention also relates to a vehicle including a motor vehicle comprising such a motor.
  • a heat engine usually comprises a cylinder block closed by a cylinder head.
  • these housings must be cooled.
  • the engine is provided with a cooling system in which a coolant is circulated by means of a feed pump and which, in turn, is cooled through a radiator.
  • the operating temperature of an engine is normally much higher than the outside temperature, especially in cold weather. Any startup of the latter is therefore accompanied by a preheating phase during which the performance is not optimal, especially during which the emissions of pollutants of carbon monoxide and unburnt hydrocarbons are much larger than nominal .
  • low load engine operating phases with temperature regulation may also require a particular cooling strategy to optimize engine performance.
  • the state of the art is known to include a motor provided with a so-called double cooling cooling system, otherwise known as "split-cooling", in English. wherein the heat transfer fluid flows independently in a first and a second fluid circuit of the cylinder block and the cylinder head, respectively, the circulation in the first fluid circuit being established once the preheating phase is complete and during significant thermal stresses of the motor from an activation of a valve arranged at the output of this first circuit.
  • Such a system makes it possible, among other things, to minimize the heating time of the engine or a part of it, by accelerating the rise in temperature of the coolant at the start of the vehicle, with a view to reducing piston friction. and segments in engine drums, fuel consumption and pollutant emissions.
  • one of the disadvantages of such a cooling system is related to the fact that it does not allow to achieve optimum and efficient cooling of the engine and in particular the cylinder head.
  • This system is therefore hardly compatible with an engine having high levels of specific power, for example with an engine having a specific power greater than 100 kW per liter of displacement.
  • the prior art discloses a cooling system 101 of the double-cooling type of a motor 100 illustrated in FIGS. Figures 1 and 2 , in which the coolant circulates independently in a first and a second fluid circuit 105, 104 respectively of the cylinder block 102 and the cylinder head 103.
  • This system 101 comprises a fluid distribution chamber 106 heat transfer fluid to the second circuit 104 of fluid defined in the cylinder head 103 and which makes it possible to achieve a transverse circulation of the coolant through the cylinder head 103 at the combustion face including the bridges defined on this face.
  • This distribution chamber 106 which is connected as input to a feed pump 107 is conventionally arranged at an outer face 108 of the motor 100.
  • such a motor 100 provided with a cooling system 101 comprising the distribution chamber 106 arranged at this outer face 108 has a size that is not suitable for the engine compartment of today's vehicles. Indeed, car manufacturers and / or engine manufacturers are currently seeking to achieve in view of the dimensions of such compartments, increasingly compact engines and nevertheless have improved performance in terms of power and / or performance that often involve an increase thermal stresses at the level of these.
  • An engine with a distribution chamber is shown in WO2015 / 086791 A1 .
  • the present invention aims to overcome these disadvantages related to the state of the art.
  • the invention makes it possible to reduce the bulk of a motor with a high specific power provided with a cooling system, in particular of the double-cooling type.
  • the invention contributes to simplifying and reducing the cost of a method of manufacturing an engine comprising such a cooling system.
  • the invention relates to a cooling system, in particular of the double cooling type, of a heat engine of a motor vehicle comprising first and second heat transfer fluid circuits respectively defined in a cylinder block and a cylinder head of said engine, the system comprising a distribution chamber arranged in the first circuit for supplying the second fluid circuit.
  • the invention also relates to a particular thermal engine comprising an open tablature type crankcase having such a cooling system.
  • the step of producing a distribution chamber comprises a substep of arranging a separating element in a first part of the first circuit.
  • the invention also relates to a motor vehicle comprising such a thermal motor.
  • the figure 3 is a schematic representation of an embodiment of a cooling system 2 of a heat engine 1 of a vehicle automobile.
  • This engine 1 may be a gasoline engine or a diesel engine including supercharged or a motor 1 operating using a technology known as "Flex Fuel” and whose fuel system and carburetion allows it to use indifferently fuels as varied as gasoline, bioethanol or a mixture of both.
  • the cooling system 2 is implemented in a motor 1 having high levels of specific power.
  • This system 2 can comprise a main circuit 3 provided with components of the engine 1 such as a degassing jar 24, a supercharging module of the engine 1 comprising a turbocharger 25, a heat exchanger 26 such as a heater or at a oil exchanger 27.
  • such a motor 1 comprises a cylinder block 5a provided with a plurality of cylinders 21 which can be stored in line.
  • This crankcase 5a is preferably of the "open tablature" type, better known by the English term "open deck”.
  • Above the cylinder block 5a along an axis substantially parallel to the vertical axis of the cylinders 21, is fixed the cylinder head 5b.
  • This cylinder head 5b includes the distribution mainly composed of valves and camshafts.
  • This yoke 5b also comprises a lower face otherwise called combustion face or fire face which is intended to be fixed on an upper face of the cylinder block 5a, which being disposed below this yoke 5b.
  • This combustion face defines a combustion chamber of the cylinders 21 of the engine 1.
  • the cylinder head comprises exhaust ducts 17a and intake ducts 17b each opening into the combustion chamber and which are respectively equipped with exhaust valves and intake.
  • the exhaust ducts 17a or admission 17b are separated by a relatively narrow zone 19 called "bridge".
  • the jumpers 19 are located in the part of the cylinder head 5b subjected to the highest temperatures, especially for the parts of these bridges 19 located between the exhaust ducts 17a.
  • these bridges 19 are subjected to heating and cooling cycles with each cycle of operation of the engine 1. These are fragile zones, more heated than the surrounding areas which are more massive and here in this embodiment of the invention. the invention better cooled during operation of the engine 1.
  • the yoke 5b may also include an integrated exhaust manifold provided with a cavity, or plenum, into which open first ends of the exhaust ducts 17a whose second ends are connected to the combustion chambers of the engine 1 .
  • This engine 1 also comprises a cylinder head gasket 36 placed between the cylinder head 5b and the cylinder block 5a and in particular between the above-mentioned upper and lower faces.
  • This cylinder head gasket 36 participates in a hermetic connection between the cylinder block 5a and the cylinder head 5b.
  • the main circuit 3 of this system 2 comprises an internal cooling circuit 4 inside the engine 1 which is provided with: a feed pump 14, first and second circuits 6a, 6b of fluid and a chamber distribution 7 to supply the second circuit 6b in fluid.
  • the feed pump 14 is intended to circulate the heat transfer fluid still called cooling fluid in this internal cooling circuit 4 of the engine 1.
  • the first and second circuits 6a, 6b are respectively included in the crankcase 5a and the cylinder head 5b. These first and second circuits 6a, 6b otherwise called core or fluid chamber each comprise a hollow space or a recess consisting of circulation channels which is defined in the cylinder block 5a or the cylinder head 5b of the engine 1 and in which is intended to circulate this cooling fluid, here water or ethylene glycol with or without adjuvants.
  • the second circuit 6b is also defined in the exhaust manifold 20 integrated with the cylinder head 5b.
  • the first circuit 6a comprises first and second parts 9a, 9b.
  • the first part 9a extends longitudinally along one side of a row of cylinders 21 of the cylinder block 5a.
  • This first portion 9a comprises upper and lower compartments 7, 8 sealed and separated by a separating element 22 visible on the figure 6 .
  • the upper compartment 7 is defined at an upper portion of the cylinder block 5a and is about one-quarter of the volume of this first portion 9a of the first circuit 6a.
  • the lower compartment 8 it is defined between a bottom of this first part 9a of the first circuit 6a and the separating element 22. It represents about three quarters of the volume of this first part 9a of the first circuit 6a.
  • the separating element 22 is preferably an insert in the first part 9a of the first circuit 6a of the cylinder block 5a after its manufacture. This separating element 22 extends longitudinally preferably over the entire length of this first part 9a along the side of the row of cylinders 21 of the cylinder block 5a.
  • This separating element 22 may be an insert or a plate which is preferably rigid and is made of a material having high thermal resistance properties such as plastic or a composite material.
  • the system 2 comprises a third circuit 6c comprising the lower compartment 8 and the second part 9b of the first circuit 6a.
  • this third circuit 6c corresponds to the first circuit 6a devoid of the upper compartment 7.
  • this third circuit 6c is defined in the cylinder block 5a and is intended to ensure a longitudinal circulation of the coolant along the opposite sides of a row of cylinders 21 of the engine 1 in the direction of the dotted arrows F1 illustrated on the figure 5 and / or a transverse circulation of the coolant through the cylinder block 5a in particular between the cylinders 21 of the engine 1 in the direction of the dashed arrows F2 illustrated on this figure 5 .
  • This third circuit 6c comprises an input 10a corresponding to an input of the lower compartment 8 which is connected to the supply pump 14 of the system 2.
  • the third circuit 6c comprises an output 10b corresponding to an output of the second part 9b of the first circuit 6a which is connected to a fluid flow control element 13 in this third circuit 6c.
  • This regulation element 13 is defined to allow / prohibit a circulation of the coolant in the third circuit 6c according to a temperature of said fluid present in the third circuit 6c of said cylinder block 5a.
  • This regulating element 13 may be a thermostat provided with a temperature sensor immersed in the heat transfer fluid present in this third circuit 6c or watered by this fluid. It may be a temperature sensor included in the body of the thermostat or a remote sensor arranged in this third circuit 6c.
  • This thermostat may for example be a wax thermostat comprising two flaps arranged at both ends of a wax bulb and whose operation is well known in the state of the art.
  • this regulation element 13 may be a valve controlled for example by a processing unit of the system 2 which is connected to a temperature sensor located in the third circuit 6c.
  • the element of control 13 includes an output which is connected to a fluid outlet housing 15 or "Water Outlet Housing” better known by the acronym BSE.
  • This housing 15 which is fixed to the engine 1, and preferably to the cylinder head 5b of the engine 1, ensures the collection of the heat transfer fluid circulated in the internal circuit 4 of the engine 1 and in particular in the second and third circuits 6b, 6c and only in the distribution chamber 7.
  • the distribution chamber 7 is arranged in the first circuit 6a and is provided for supplying the second circuit 6b with fluid.
  • This distribution chamber 7 corresponds to the upper compartment 7 of the first circuit 6a.
  • the chamber 7 comprises a bottom wall forming the bottom of this chamber 7 corresponding to the separating element 22, and an opening formed in the upper face of the cylinder block 5a and which is covered by a portion of the cylinder head gasket 36 when the assembly of this cylinder block 5a with the cylinder head 5b and this cylinder head gasket 36.
  • This portion of the cylinder head gasket 36 which is arranged at the upper compartment 7 is provided with orifices 18, on the figure 4 this embodiment comprises three.
  • the distribution chamber 7 extends longitudinally along one side of a row of cylinders 21 of the cylinder block 5a and this, at an upper portion of the cylinder block 5a.
  • the distribution chamber 7 comprises an inlet 11a connected to the feed pump 14 and an outlet 11b connected to an inlet 12a of the second circuit 6b.
  • the heat transfer fluid included in the distribution chamber 7 is circulated by the feed pump 14 so as to pass through the orifices 18 of the cylinder head gasket 36 and flow through the second circuit 6b.
  • the latter When the heat transfer fluid emerges from these orifices 18 in the second circuit 6b, the latter then provides a transverse circulation of the fluid through the yoke 5b in the direction of the arrows F3 at the combustion face, in particular of the bridge 19 defined on this face.
  • the cooling fluid is able to circulate at the bridges 19 of the combustion face between the exhaust ducts 17a and 17b intake.
  • the second circuit 6b is able to ensure also a longitudinal circulation of the coolant in the direction of the arrows F4 along at least one side of the combustion face of the cylinder head 5b.
  • This second circuit 6b includes an output 12b which is connected to the fluid outlet housing 15.
  • the system 2 also comprises a fluid inlet duct 16a of the internal circuit 4 connected in particular to an output of a radiator 23 but also to component outputs of the motor 1 mentioned above.
  • This inlet duct 16a comprises the supply pump 14 provided with an outlet connected directly and distinctly to the inlet 11a of the distribution chamber 7 at the upper compartment 7 and at the inlet 10a of the third circuit 6c ie at the lower compartment 8.
  • the feed pump 14 contributes to circulating the heat transfer fluid that it receives in particular from this radiator and / or the components of the engine 1, in the third circuit 6c and the second circuit 6b via the distribution chamber 7.
  • the fluid outlet housing 15 is in turn connected to a discharge pipe 16b of fluid of the internal circuit 4.
  • This exhaust duct 16b is then in particular connected to the radiator inlets and other components of the engine 1 so that the heat transfer fluid is transmitted to them according to the activation / deactivation of a valve 28 or a thermostat 28 arranged in the main cooling circuit 3.
  • This radiator 23 which is included in the main circuit 3, constitutes a heat exchanger for cooling the heat transfer fluid at the outlet of the internal circuit 4 at the level of the evacuation duct 16b. The radiator 23 is then able to return the cooled heat transfer fluid to the internal circuit 4 via the inlet duct 16a provided with the feed pump 14.
  • the cooling system 2 of the double cooling type often known by the Anglo-Saxon term “split-cooling" and in which the heat transfer fluid circulates independently in the third circuit 6c which is defined in the crankcase 5a and the second circuit 6b included in the cylinder head 5b, the circulation in the third circuit 6c being established only once a preheating phase of the cylinder block 5a is completed by the activation of the regulation element 13.
  • the heat transfer fluid is circulated in the internal circuit 4 from the feed pump 14 whose output is connected to the inputs 10a, 11a of the third and second circuits 6c, 6b.
  • the flow of the coolant in the third circuit 6c is controlled to implement a preheating process of the engine and thus improve the performance of the latter while reducing pollutant emissions and fuel consumption.
  • the regulation element 13 then prohibits the circulation of this heat transfer fluid in the third circuit 6c when a temperature of the fluid present in this circuit 6c is substantially lower than a reference temperature.
  • the temperature of the fluid can be estimated or measured.
  • This reference temperature is defined according to the characteristics of the engine 1 and preferably corresponds to a preheating end temperature of the crankcase 5a.
  • the control element 13 allows the circulation of the fluid in the third circuit 6c. Under these conditions, the heat transfer fluid circulated by the feed pump 13 flows in both the third and second circuits 6c, 6b.
  • the invention also relates to a method of manufacturing the engine 1 in particular comprising the casing 5a of the open tablature type, comprising this cooling system 2.
  • This method comprises a step 29 for obtaining the cylinder block 5a and the cylinder head 5b respectively comprising the first and second heat transfer fluid circuits 6a, 6b.
  • This obtaining step 29 implements processes for manufacturing the cylinder block 5a and the cylinder head 5b, in particular from molding, foundry and / or machining processes well known in the state of the art.
  • the molding manufacturing process can for example provide for the use of permanent molds (metal) or destructible molds (sand mold or resorbable salt mold).
  • This method then comprises a step 30 of producing the distribution chamber 7 in the first circuit 6a, said chamber 7 being provided for supplying the second circuit 6b with heat transfer fluid.
  • This step 30 comprises an arrangement sub-step 31 of a separating element 22 in the first part 9a of the first circuit 6a extending longitudinally along one side of a row of cylinders 21 of the cylinder block 5a.
  • the method comprises an assembly step 32 of the crankcase 5a with the cylinder head 5b.
  • This step 32 comprises a substep 33 of fixing the lower face of the yoke 5b with the face upper casing 5a cylinder, and an insertion sub-step 34 of the cylinder head gasket 36 between these lower and upper faces.
  • the part of the cylinder head gasket 36 which is provided with the orifices 18 is then positioned at the opening of the upper compartment 7 included in the upper face of the cylinder block 5a located in the first part 9a of the first circuit 6a.
  • the method also comprises a step of mounting the operating components of the engine 1 and the cooling system 2 in / on the engine 1.
  • These operating components of the engine 1 correspond, for example, in a nonlimiting and non-exhaustive manner to the components and components. dispensing and / or driving the engine 1.
  • the invention makes it possible to reduce the size of a motor 1, in particular of an engine having a high specific power, and which is provided with the cooling system 2, in particular of the double-cooling type.
  • the invention makes it possible to ensure optimum and efficient cooling at the bridges 19 between the exhaust ducts 17a and 17b of admission, which makes it possible to improve the heat exchanges in this zone and to limit the risks of boiling of the cooling fluid.
  • the engine 1 and in particular the yoke 5b have excellent thermomechanical behavior to prevent any risk of crack or crack initiation.
  • Such a motor is then more compact lighter and more economical to achieve.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Claims (10)

  1. Kühlsystem (2), insbesondere des Typs mit doppelter Kühlung, eines Verbrennungsmotors (1) eines Kraftfahrzeugs, welches einen ersten und einen zweiten Wärmeträgerfluidkreislauf (6a, 6b) umfasst, die in einem Zylinderkurbelgehäuse (5a) bzw. einem Zylinderkopf (5b) des Motors (1) definiert sind, wobei das System (2) eine im ersten Kreislauf (6a) angeordnete Verteilungskammer (7) aufweist, die dafür vorgesehen ist, den zweiten Kreislauf (6b) mit Fluid zu versorgen.
  2. Kühlsystem (2) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass:
    - die Verteilungskammer (7) einem oberen Raum (7) eines ersten Teils (9a) des ersten Kreislaufs (6a) entspricht, der einen oberen und einen unteren Raum (7, 8) umfasst, die durch ein Trennelement (22) getrennt sind;
    - ein erster Teil (9a) des ersten Kreislaufs (6a) sich in Längsrichtung entlang einer Seite einer Reihe von Zylindern (21) des Zylinderkurbelgehäuses (5a) erstreckt, und
    - die Verteilungskammer (7) einen Eingang (11a), der mit einer Speisepumpe (14) verbunden ist, und einen Ausgang (11b), der mit einem Eingang (12a) des zweiten Kreislaufs (6b) verbunden ist, umfasst.
  3. Kühlsystem (2) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass er einen dritten Kreislauf (6c) umfasst, welcher sicherstellt:
    - eine Längszirkulation des Wärmeträgerfluids durch das Zylinderkurbelgehäuse (5a) hindurch entlang gegenüberliegender Seiten einer Reihe von Zylindern (21) des Motors (1), und
    - eine Querzirkulation des Wärmeträgerfluids durch das Zylinderkurbelgehäuse (5a) hindurch, insbesondere zwischen den Zylindern (21) des Motors (1).
  4. Kühlsystem (2) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der zweite Kreislauf (6b) im Zylinderkopf (5b) definiert ist und sicherstellt:
    - eine Querzirkulation des Wärmeträgerfluids durch den Zylinderkopf (5b) hindurch an wenigstens einer Verbrennungsfläche insbesondere eines Steges (19), der auf dieser Fläche definiert ist, und
    - eine Längszirkulation des Wärmeträgerfluids entlang wenigstens einer Seite einer Verbrennungsfläche des Zylinderkopfes (5b).
  5. Kühlsystem (2) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass:
    - ein dritter Kreislauf (6c) einen unteren Raum (8) eines ersten Teils (9a) des ersten Kreislaufs (6a) und einen zweiten Teil (9b) des im Zylinderkurbelgehäuse (5a) definierten ersten Kreislaufs (6a) umfasst;
    - ein dritter Kreislauf (6c) einen Eingang (10a) umfasst, der einem Eingang des unteren Raumes (8) entspricht, welcher mit einer Speisepumpe (14) des Systems (2) verbunden ist, und
    - ein dritter Kreislauf (6c) einen Ausgang (10b) umfasst, der einem Ausgang eines zweiten Teils (9b) des ersten Kreislaufs (6a) entspricht, welcher mit einem Element zur Regelung (13) der Fluiddurchflussmenge im dritten Kreislauf (6c) verbunden ist.
  6. Kühlsystem (2) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass:
    - ein Trennelement (22) ein Einsatzstück in einem ersten Teil (9a) des ersten Kreislaufs (6a) ist, und
    - ein Trennelement (22) aus einem Kunststoffmaterial hergestellt ist.
  7. Verbrennungsmotor (1), der insbesondere ein Zylinderkurbelgehäuse (5a) vom Open-Deck-Typ umfasst, das ein Kühlsystem (2) nach einem der vorhergehenden Ansprüche aufweist.
  8. Verfahren zur Herstellung eines Verbrennungsmotors (1), der insbesondere ein Zylinderkurbelgehäuse (5a) vom Open-Deck-Typ umfasst, das ein Kühlsystem (2) nach einem der Ansprüche 1 bis 6 aufweist, wobei das Verfahren die folgenden Schritte umfasst:
    - Ausbilden (29) eines Zylinderkurbelgehäuses (5a) und eines Zylinderkopfes (5b), die einen ersten bzw. einen zweiten Wärmeträgerfluidkreislauf (6a, 6b) umfassen, und
    - Herstellen (30) einer Verteilungskammer (7) im ersten Kreislauf (6a), wobei die Kammer (7) dafür vorgesehen ist, den zweiten Kreislauf (6b) mit Fluid zu versorgen.
  9. Verfahren nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass der Schritt des Herstellens (30) einer Verteilungskammer (7) einen Teilschritt des Anordnens (31) eines Trennelements (22) in einem ersten Teil (9a) des ersten Kreislaufs (6a) umfasst.
  10. Kraftfahrzeug, welches einen Verbrennungsmotor (1) nach Anspruch 7 umfasst.
EP17175805.5A 2016-06-13 2017-06-13 Kühlsystem eines wärmekraftmotors Active EP3258078B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1655455A FR3052491B1 (fr) 2016-06-13 2016-06-13 Systeme de refroidissement d'un moteur thermique

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EP3258078A1 EP3258078A1 (de) 2017-12-20
EP3258078B1 true EP3258078B1 (de) 2019-03-13

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FR (1) FR3052491B1 (de)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7237511B2 (en) * 2005-03-25 2007-07-03 Mazda Motor Corporation Cooling device of engine
JP4640245B2 (ja) * 2006-04-24 2011-03-02 マツダ株式会社 エンジンの冷却装置
AT515143B1 (de) * 2013-12-12 2015-11-15 Avl List Gmbh Flüssigkeitsgekühlte Brennkraftmaschine

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* Cited by examiner, † Cited by third party
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FR3052491A1 (fr) 2017-12-15
FR3052491B1 (fr) 2020-01-17
EP3258078A1 (de) 2017-12-20

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