EP3374613A1 - Circuit de refroidissement pour un véhicule automobile - Google Patents
Circuit de refroidissement pour un véhicule automobileInfo
- Publication number
- EP3374613A1 EP3374613A1 EP16809971.1A EP16809971A EP3374613A1 EP 3374613 A1 EP3374613 A1 EP 3374613A1 EP 16809971 A EP16809971 A EP 16809971A EP 3374613 A1 EP3374613 A1 EP 3374613A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooling
- loop
- temperature
- iii
- cooling circuit
- 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.)
- Granted
Links
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
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/165—Controlling of coolant flow the coolant being liquid by thermostatic control characterised by systems with two or more loops
-
- 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
- F01P11/029—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
- 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
- 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
-
- 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
- F01P2050/00—Applications
- F01P2050/24—Hybrid vehicles
Definitions
- the present invention relates to a cooling device and a cooling method for motor vehicles.
- thermal regulation loop is meant a circuit in which circulates a heat transfer fluid which regulates the temperature of a mechanical member by conveying the thermal energy produced by the operation of this body.
- a vehicle of this type may have:
- a low temperature control loop for regulating the temperature of the electronic power units of the electric propulsion chain
- a very low temperature control loop for regulating the temperature of the propulsion battery.
- certain equipment such as the degassing box, may be common to several control loops.
- Degassing is an important function in which air or gas bubbles that are present in the coolant are purged.
- Degassing is an important function because the presence of air bubbles in the coolant has a deleterious effect on the quality of the cooling, and therefore does not allow the engine operation in optimal conditions, which can lead to non-thermal conditions. controlled with consequences in terms of reliability or durability of the organs and nuisance to the environment.
- the high temperature control loop has a constant need for degassing because the coolant which is in contact with hot spots of the engine - cooling of the cylinder head - can vaporize punctually and therefore generate gas bubbles while the control loops at low or very low temperature have a need for degassing during startup but do not generate gas bubbles during operation.
- a degassing box common to a high temperature cooling loop and to one or more cooling loops at a lower temperature is have a deleterious effect on cooling operation at lower temperature.
- document FR 2 949 509-A1 discloses degassing loop closure devices which, however, are unsuitable for the management of multiple cooling loops and their problem of degassing.
- an object of the invention is to provide a cooling circuit with several cooling loops pooling the degassing box without compromising the operation of each cooling loop.
- the invention relates to a cooling circuit for a motor vehicle comprising a first cooling loop designed to thermoregulate a first member and at least a second cooling loop designed to thermoregulate a second member.
- the cooling circuit comprises a single degassing box fluidically connected to the first loop and to at least one second cooling loop and an isolation valve interposed between the degassing box and the minus a second cooling loop designed to selectively close the flow between the degassing box and at least one second cooling loop.
- the isolation valve may include at least one thermally sensitive bimetallic member adapted to act on a shutter to drive the valve isolating a passing position at a non-conducting position when the cooling fluid passing through the isolation valve reaches a trip temperature.
- the isolation valve can be integrated into a thermostatic housing that regulates the temperature of the at least one second cooling loop.
- the thermostatic housing comprises a stitch in communication with the degassing box.
- the thermostatic housing may comprise a cavity in which are arranged one or more bimetallic elements, the triggering of which causes a shutter to pass, such as a ball from a position in which the shutter passes the cooling fluid to a position in which the shutter blocks the passage of coolant.
- the trip temperature of the isolation valve may be equal to or greater than the nominal operating temperature of the, at least one, second cooling loop.
- the cooling circuit comprises a first high temperature cooling loop, a second low temperature cooling loop and a third very low temperature cooling loop.
- Each cooling loop may comprise at least one element of the group comprising an exchanger, a radiator, a pump, a thermostatic housing.
- FIG. 1 schematically shows an embodiment of a cooling circuit according to the invention
- FIG. 4 shows an embodiment of a thermostatic housing according to the invention.
- the invention proposes a cooling circuit 1 for a vehicle comprising a plurality of cooling loops.
- the cooling circuit 1 comprises three cooling loops namely: a high temperature cooling loop I, a low temperature cooling loop II and a very low temperature cooling loop III.
- the high temperature cooling loop I comprises a high temperature exchanger 2 constituted by the engine of the vehicle, a high temperature radiator 3.
- a pump 4 circulates a glycol type cooling fluid.
- a stitching is provided on the thermostatic housing 5 to make a connection with a degassing box 6.
- the low temperature cooling loop II comprises a low temperature exchanger 20 with, for example, the power electronics components (inverter, charger ...) of the electric propulsion chain, a low temperature radiator 30.
- a pump 40 ensures the circulation of the cooling fluid.
- the low temperature cooling loop II is also provided with a thermostatic control unit 50 which makes it possible to control the cooling fluid circuit as a function of the temperature.
- a stitching is provided on the thermostatic housing 50 to make a connection with the degassing box 6.
- the very low temperature cooling loop III comprises a very low temperature exchanger 200 with, for example, the battery of the electric propulsion system and a very low temperature radiator.
- a pump 400 circulates the cooling fluid.
- the very low temperature cooling loop III is also provided with a thermostatic control unit 500 which makes it possible to control the cooling fluid circuit as a function of the temperature.
- a tapping is provided on the thermostatic housing very low temperature 500 to make a connection with the degassing box 6.
- isolation valve 700 on the return branch which ensures the return of the cooling fluid downstream of the degassing box 6. The function of this isolation valve will be described in detail below.
- the cooling device which comprises three cooling loops has a single degassing box 6 which is therefore common to the three degassing loops.
- the operation of the cooling device is as follows.
- Each of the three cooling loops I, II, III has a need for degassing which is satisfied by the connection of each of the cooling loops to the degassing box 6.
- the cooling fluid of each of the high temperature, low temperature and very low temperature cooling loops is purged of its gas bubbles which contributes to optimal operation of the vehicle.
- the temperature-controlled isolation valves 70 and 700 are put in the closed position because the temperature of the triggering of the isolation valve 70 of the low temperature loop II corresponds to the nominal operating temperature of this loop and the triggering temperature of the isolation valve 700 of the very low temperature loop III corresponds to the nominal temperature of operation of this loop.
- the degassing box 6 which is unique and which is common to the three cooling loops I, II, III is isolated from the low temperature loop II and the very low temperature loop III. In this configuration the degassing box is therefore only in connection with the high temperature cooling loop I.
- the insulation of the very low temperature loop III with respect to the degassing box 6 is generally done before the insulation of the low temperature loop 11 with respect to the degassing box 6 because the cooling fluid in the loop at very low temperature.
- Low temperature III reaches its nominal operating temperature before the coolant in the low temperature loop II reaches its nominal operating temperature.
- the low temperature cooling loops II and the very low temperature III do not generate any gas bubbles in their coolant because, unlike the high temperature cooling loop I, no boiling of the coolant occurs.
- control of the isolation valves can be done by solenoid valves controlled by temperature probes.
- control of the isolation valves can be done mechanically by a temperature sensitive element (wax capsule, shape memory material or bimetallic strip).
- isolation valve 70, 700 can be incorporated in the thermostatic box 50,500 as shown in FIG.
- the thermostatic housing has, conventionally, an inlet and an outlet for the circulation of the fluid to be regulated.
- thermostatic box 50, 500 is then equipped with a flow and a return 51 from the degassing box 6.
- Control of the return flow of the water box is done by a shutter such as a valve or a ball 52 which rests on one or more bimetallic elements 53 as can be seen in Figure 2.
- the ball 52 is optionally maintained against the bimetallic member (s) 53 by a spring.
- the stack of bimetallic elements 53 and possibly the spring are calibrated for tripping at a tripping temperature which corresponds to the nominal temperature of the cooling loop in question.
- the valve, the bimetallic elements and the eventual return spring are housed in a cavity formed in the thermostatic housing.
- the isolation valve 50, 500 is conducting when the temperature is below the nominal operating temperature of the coolant and becomes non-conducting when the temperature of the coolant reaches a trigger value corresponding to a temperature determined according to the nominal operating temperature of the low temperature cooling loop II or the very low temperature loop III.
- the isolation valve passes the cooling fluid back from the degassing box 6 which joins the cooling fluid of the low loop II or very low temperature III.
- the cooling fluid of the low temperature cooling loop II and / or the cooling loop very low temperature III can be loaded with gas bubbles that should be discarded for optimal operation of the various components of the vehicle.
- the temperature of the coolant has reached its nominal temperature after a variable operating time.
- FIG. 3 thus shows the isolation valve 50 in a configuration in which the valve blocks the return of the degassing box 6.
- the ball 52 With the coolant having reached a nominal operating temperature, the ball 52 is pushed against its seat 54 under the action of the bimetallic elements and blocks the flow coming from the degassing box 6.
- the cooling fluid is thus used as pilot of the isolation valve.
- the valve is reset when the coolant temperature drops.
- the bimetal element arises from the hysteresis of these elements. Indeed, the hysteresis of the bimetallic elements is, according to the conditions of assembly and pre-charge, about 20 ° C. If the difference between the nominal trip temperatures and the control temperature of the cold coolant is less than 20 ° C, the cold coolant temperature can be used as the reset condition.
- the low or very low temperature isolation valve can be integrated into the thermostatic housing or can be an independent element that is placed on the cooling loop.
- the invention is not limited to the embodiments described above by way of non-limiting example but encompasses all the variants of execution.
- the triggering of the isolation valve could be achieved by a thermosensitive wax element or shape memory alloy.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1560868A FR3043719B1 (fr) | 2015-11-13 | 2015-11-13 | Circuit de refroidissement pour un vehicule automobile |
| PCT/FR2016/052905 WO2017081407A1 (fr) | 2015-11-13 | 2016-11-09 | Circuit de refroidissement pour un véhicule automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3374613A1 true EP3374613A1 (fr) | 2018-09-19 |
| EP3374613B1 EP3374613B1 (fr) | 2021-06-02 |
Family
ID=55345985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16809971.1A Active EP3374613B1 (fr) | 2015-11-13 | 2016-11-09 | Circuit de refroidissement pour un véhicule automobile |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US10385760B2 (fr) |
| EP (1) | EP3374613B1 (fr) |
| CN (1) | CN108474287B (fr) |
| ES (1) | ES2886481T3 (fr) |
| FR (1) | FR3043719B1 (fr) |
| WO (1) | WO2017081407A1 (fr) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3781798B1 (fr) * | 2018-04-17 | 2023-03-01 | Scania CV AB | Système de refroidissement comprenant au moins deux circuits de refroidissement reliés à un réservoir d'expansion commun |
| DE102018116440A1 (de) * | 2018-07-06 | 2020-01-09 | Volkswagen Aktiengesellschaft | Kühlkreislauf für ein Kraftfahrzeug und Komponente des Kühlkreislaufs sowie ein Entlüftungsventil |
| US11413951B2 (en) * | 2019-06-05 | 2022-08-16 | Ford Global Technologies, Llc | Method for detecting heater core isolation valve status |
| KR102739188B1 (ko) * | 2020-05-13 | 2024-12-06 | 현대자동차주식회사 | 차량용 라디에이터조립체 및 이를 포함한 냉각시스템 |
| SE544587C2 (en) * | 2020-05-19 | 2022-09-13 | Scania Cv Ab | Cooling system and vehicle comprising such a cooling system |
| FR3123384B1 (fr) | 2021-05-25 | 2023-06-30 | Psa Automobiles Sa | Circuit de refroidissement un vehicule automobile |
Family Cites Families (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE425514B (sv) * | 1981-05-08 | 1982-10-04 | Nohab Diesel Ab | Sett att temperaturreglera ett ferskvattenkylsystem for kompressormatade forbrenningsmotorer med luftmellankylare samt ferskvattenkylsystem i enlighet med settet |
| DE3716555A1 (de) * | 1987-05-18 | 1988-12-08 | Bayerische Motoren Werke Ag | Befuell-, entlueftungs- und drucksteuer-vorrichtung fuer den fluessigkeits-kuehlkreis von kraft- und arbeitsmaschinen, insbesondere brennkraftmaschinen |
| JPH10266856A (ja) * | 1997-03-21 | 1998-10-06 | Toyota Motor Corp | ハイブリッド車用動力冷却装置 |
| FR2804722B1 (fr) * | 2000-02-03 | 2002-03-08 | Peugeot Citroen Automobiles Sa | Dispositif de refroidissement d'un moteur de vehicule automobile |
| US6616059B2 (en) * | 2002-01-04 | 2003-09-09 | Visteon Global Technologies, Inc. | Hybrid vehicle powertrain thermal management system and method for cabin heating and engine warm up |
| JP3928945B2 (ja) * | 2002-09-05 | 2007-06-13 | 日本サーモスタット株式会社 | 2系統冷却装置用サーモスタット |
| US7128025B1 (en) * | 2003-10-24 | 2006-10-31 | Brp Us Inc. | Dual temperature closed loop cooling system |
| FR2890606B1 (fr) * | 2005-09-13 | 2008-11-07 | Renault Sas | Procede de commande d'un groupe motopropulseur de vehicule comprenant deux circuits de refroidissement |
| CA2651087C (fr) * | 2006-05-08 | 2015-07-07 | Magna Powertrain Inc. | Systeme de refroidissement de vehicule avec ecoulements diriges |
| DE102006044820B4 (de) * | 2006-09-20 | 2019-03-07 | MAN Truck & Bus Österreich AG | Kühlsystem einer Brennkraftmaschine mit Ladeluftzufuhr |
| WO2008034959A1 (fr) * | 2006-09-22 | 2008-03-27 | Renault Trucks | Circuit de refroidissement d'un moteur thermique de vehicule automobile |
| JP4661923B2 (ja) * | 2008-09-04 | 2011-03-30 | トヨタ自動車株式会社 | 内燃機関の冷却装置 |
| FR2936566B1 (fr) * | 2008-09-30 | 2010-10-15 | Renault Sas | Circuit de refroidissement pour la regulation thermique du moteur independamment des autres consommateurs |
| US20110265740A1 (en) * | 2009-03-16 | 2011-11-03 | Toyota Jidosha Kabushiki Kaisha | Engine cooling device |
| SE534871C2 (sv) * | 2010-03-16 | 2012-01-31 | Scania Cv Ab | Termostat för reglering av temperaturen hos en kylvätska som kyler en förbränningsmotor |
| CN202117754U (zh) * | 2011-06-03 | 2012-01-18 | 徐玄翰 | 引擎冷却装置 |
| DE102011056282A1 (de) * | 2011-12-05 | 2013-06-06 | Still Gmbh | Kühlsystem für ein Flurförderzeug |
| US9022647B2 (en) * | 2012-03-30 | 2015-05-05 | Ford Global Technologies, Llc | Engine cooling system control |
| US10035404B2 (en) * | 2012-10-15 | 2018-07-31 | Ford Global Technologies, Llc | Thermostatically-controlled multi-mode coolant loops |
| US10207567B2 (en) * | 2012-10-19 | 2019-02-19 | Ford Global Technologies, Llc | Heater core isolation valve position detection |
| DE112014005146T5 (de) * | 2013-11-29 | 2016-08-18 | Scania Cv Ab | Kühlanlage |
| CN204099031U (zh) * | 2014-07-16 | 2015-01-14 | 北汽福田汽车股份有限公司 | 节温器及其除气装置、发动机及车辆 |
| US9719409B2 (en) * | 2014-12-26 | 2017-08-01 | Ford Global Technologies, Llc | Method and system for engine cooling system control |
| US10336180B2 (en) * | 2016-06-17 | 2019-07-02 | Ford Global Technologies, Llc | Method and system for a vehicle cooling system |
| KR20180019410A (ko) * | 2016-08-16 | 2018-02-26 | 현대자동차주식회사 | 냉각수 제어밸브 유닛을 갖는 엔진시스템 |
| US10222134B2 (en) * | 2016-10-06 | 2019-03-05 | Ford Global Technologies, Llc | Dual loop cooling system energy storage and reuse |
-
2015
- 2015-11-13 FR FR1560868A patent/FR3043719B1/fr not_active Expired - Fee Related
-
2016
- 2016-11-09 CN CN201680077855.1A patent/CN108474287B/zh active Active
- 2016-11-09 ES ES16809971T patent/ES2886481T3/es active Active
- 2016-11-09 WO PCT/FR2016/052905 patent/WO2017081407A1/fr not_active Ceased
- 2016-11-09 US US15/775,989 patent/US10385760B2/en active Active
- 2016-11-09 EP EP16809971.1A patent/EP3374613B1/fr active Active
Also Published As
| Publication number | Publication date |
|---|---|
| FR3043719A1 (fr) | 2017-05-19 |
| US20190120120A1 (en) | 2019-04-25 |
| ES2886481T3 (es) | 2021-12-20 |
| US10385760B2 (en) | 2019-08-20 |
| FR3043719B1 (fr) | 2019-07-05 |
| CN108474287A (zh) | 2018-08-31 |
| WO2017081407A1 (fr) | 2017-05-18 |
| CN108474287B (zh) | 2020-08-21 |
| EP3374613B1 (fr) | 2021-06-02 |
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