EP3374613B1 - Circuit de refroidissement pour un véhicule automobile - Google Patents
Circuit de refroidissement pour un véhicule automobile Download PDFInfo
- Publication number
- EP3374613B1 EP3374613B1 EP16809971.1A EP16809971A EP3374613B1 EP 3374613 B1 EP3374613 B1 EP 3374613B1 EP 16809971 A EP16809971 A EP 16809971A EP 3374613 B1 EP3374613 B1 EP 3374613B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooling
- temperature
- loop
- iii
- isolation valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001816 cooling Methods 0.000 title claims description 74
- 238000007872 degassing Methods 0.000 claims description 35
- 238000002955 isolation Methods 0.000 claims description 28
- 239000002826 coolant Substances 0.000 claims description 18
- 238000004891 communication Methods 0.000 claims description 2
- 230000028016 temperature homeostasis Effects 0.000 claims 2
- 239000012809 cooling fluid Substances 0.000 description 15
- 230000006870 function Effects 0.000 description 7
- 230000001105 regulatory effect Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 230000002939 deleterious effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000011176 pooling Methods 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000013529 heat transfer fluid Substances 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000012781 shape memory material Substances 0.000 description 1
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- 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 member.
- certain equipment such as the degassing box, may be common to several control loops.
- Degassing is an important function during 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 to operate under optimal conditions, which can lead to non-thermal conditions. Controlled with consequences in terms of reliability or durability of the components and nuisance for 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 - cylinder head cooling - can occasionally vaporize and therefore generate gas bubbles while the low or very low temperature control loops need degassing when they are started up but do not generate gas bubbles during their operation.
- a degassing box common to a high-temperature cooling loop and to one or more lower-temperature cooling loops is found. have a deleterious effect on the cooling operation at lower temperature.
- an aim 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 according to claim 1.
- the isolation valve can be integrated with a thermostatic box which regulates the temperature of the at least a second cooling loop.
- the thermostatic box comprises a tap in communication with the degassing box.
- the thermostatic housing may include a cavity in which are arranged one or more bimetallic elements, the triggering of which causes a shutter such as a ball to pass from a position in which the shutter allows the cooling fluid to pass to a position in which the shutter blocks the passage of coolant.
- the isolation valve trigger temperature 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 can comprise at least one element of the group comprising an exchanger, a radiator, a pump, a thermostatic unit.
- the invention proposes a cooling circuit 1 for a vehicle comprising several 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 formed by the heat engine of the vehicle, a high temperature radiator 3.
- a pump 4 circulates a cooling fluid of glycol type.
- a thermostatic control unit 5 which makes it possible to control the circuit of the cooling fluid as a function of the temperature.
- a connection is provided on the thermostatic box 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 (inverter, charger, etc.) of the electric propulsion chain, a low temperature radiator 30.
- a pump 40 ensures the circulation of the fluid cooling.
- 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 tap is provided on the thermostatic box 50 to make a connection with the degassing box 6.
- isolation valve 70 controlled in temperature on the return branch which ensures the return of the cooling fluid downstream of the degassing box 6. The function of this isolation valve 70 will be described in more detail. far.
- the very low temperature cooling loop III comprises a very low temperature exchanger 200 with, for example, the battery of the electric propulsion chain 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 tap is provided on the very low temperature thermostatic box 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 presents 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 cooling loops temperature, low temperature and very low temperature is purged of its gas bubbles which contributes to optimal operation of the vehicle.
- the temperature controlled isolation valves 70 and 700 go into the closed position because the temperature of tripping of the isolation valve 70 of the low temperature loop II corresponds to the nominal operating temperature of this loop and the tripping temperature of the isolation valve 700 of the very low temperature loop III corresponds to the nominal temperature 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 from the very low temperature loop III. In this configuration, the degassing box is therefore only linked to 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 isolation of the low temperature loop II with respect to the degassing box 6 because the cooling fluid in the loop has very 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 II and very low temperature III cooling loops do not generate any gas bubbles in their cooling fluid because, unlike the high temperature cooling loop I, no boiling of the liquid occurs. cooling.
- 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 bimetal).
- isolation valve 70,700 can be incorporated into the thermostatic box 50,500 as shown in figure 4 .
- the thermostatic unit has, in a conventional manner, 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.
- the control of the return flow of the water box is effected by a shutter such as a valve or a ball 52 which rests on one or more bimetallic elements 53 as can be seen on the figure. figure 2 .
- the ball 52 is optionally held against the bimetallic element (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 possible return spring are housed in a cavity made in the thermostatic unit.
- the isolation valve 50, 500 is on when the temperature is lower than the nominal operating temperature of the coolant and turns off when the temperature of the coolant reaches a trigger value which corresponds to a temperature determined according to the nominal operating temperature of the low temperature cooling loop II or of the very low temperature loop III.
- the isolation valve allows the cooling fluid to pass back from the degassing box 6 which joins the cooling fluid for the low II or very low temperature III loop.
- the cooling fluid of the low temperature cooling loop II and / or of the very low temperature cooling loop III can be loaded with gas bubbles which should be removed 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.
- the figure 3 thus shows the isolation valve 50 in a configuration in which the valve blocks the return of the degassing box 6.
- the coolant having reached a nominal operating temperature, the ball 52 is pushed against its seat 54 under the action 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 bimetallic element arises from the hysteresis of these elements.
- the hysteresis of the bimetallic elements is, depending on the mounting and preload conditions, about 20 ° C. If the difference between the nominal cut-out temperatures and the control temperature of the cold coolant is less than 20 ° C, the temperature of the cold coolant can be used as the reset condition.
- the low or very low temperature isolation valve may be integrated into the thermostatic unit or may be an independent element which is placed on the cooling loop.
- the invention is not limited to the embodiments described above by way of nonlimiting example, but it encompasses all the variant embodiments covered by the claims.
- the triggering of the isolation valve could be achieved by an element made of heat-sensitive wax or of a 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)
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 EP3374613A1 (fr) | 2018-09-19 |
EP3374613B1 true 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 (es) |
EP (1) | EP3374613B1 (es) |
CN (1) | CN108474287B (es) |
ES (1) | ES2886481T3 (es) |
FR (1) | FR3043719B1 (es) |
WO (1) | WO2017081407A1 (es) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11199125B2 (en) | 2018-04-17 | 2021-12-14 | Scania Cv Ab | Cooling system comprising at least two cooling circuits connected to a common expansion tank |
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 |
KR20210139096A (ko) * | 2020-05-13 | 2021-11-22 | 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 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001057373A1 (fr) * | 2000-02-03 | 2001-08-09 | Peugeot Citroen Automobiles | Procede et dispositif de refroidissement d'un moteur de vehicule automobile |
Family Cites Families (25)
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 |
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 |
WO2007128123A1 (en) * | 2006-05-08 | 2007-11-15 | Magna Powertrain Inc. | Vehicle cooling system with directed flows |
DE102006044820B4 (de) * | 2006-09-20 | 2019-03-07 | MAN Truck & Bus Österreich AG | Kühlsystem einer Brennkraftmaschine mit Ladeluftzufuhr |
EP2066884B1 (fr) * | 2006-09-22 | 2011-08-24 | 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 |
WO2010106615A1 (ja) * | 2009-03-16 | 2010-09-23 | トヨタ自動車株式会社 | エンジンの冷却装置 |
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 WO PCT/FR2016/052905 patent/WO2017081407A1/fr active Application Filing
- 2016-11-09 ES ES16809971T patent/ES2886481T3/es active Active
- 2016-11-09 CN CN201680077855.1A patent/CN108474287B/zh active Active
- 2016-11-09 US US15/775,989 patent/US10385760B2/en active Active
- 2016-11-09 EP EP16809971.1A patent/EP3374613B1/fr active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001057373A1 (fr) * | 2000-02-03 | 2001-08-09 | Peugeot Citroen Automobiles | Procede et dispositif de refroidissement d'un moteur de vehicule automobile |
Also Published As
Publication number | Publication date |
---|---|
EP3374613A1 (fr) | 2018-09-19 |
CN108474287A (zh) | 2018-08-31 |
ES2886481T3 (es) | 2021-12-20 |
FR3043719B1 (fr) | 2019-07-05 |
FR3043719A1 (fr) | 2017-05-19 |
US10385760B2 (en) | 2019-08-20 |
CN108474287B (zh) | 2020-08-21 |
US20190120120A1 (en) | 2019-04-25 |
WO2017081407A1 (fr) | 2017-05-18 |
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