EP2553232B1 - Dispositif de refroidissement pour un circuit de recirculation de gaz d'echappement d'un moteur - Google Patents

Dispositif de refroidissement pour un circuit de recirculation de gaz d'echappement d'un moteur Download PDF

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Publication number
EP2553232B1
EP2553232B1 EP11712225.9A EP11712225A EP2553232B1 EP 2553232 B1 EP2553232 B1 EP 2553232B1 EP 11712225 A EP11712225 A EP 11712225A EP 2553232 B1 EP2553232 B1 EP 2553232B1
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EP
European Patent Office
Prior art keywords
cooling
valve
air
fluid
engine
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Application number
EP11712225.9A
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German (de)
English (en)
French (fr)
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EP2553232A1 (fr
Inventor
Laurent Odillard
Yoann Lemarchand
Olivier Latroy
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.)
Valeo Systemes Thermiques SAS
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Valeo Systemes Thermiques SAS
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Publication of EP2553232A1 publication Critical patent/EP2553232A1/fr
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    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • 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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/23—Layout, e.g. schematics
    • F02M26/28—Layout, e.g. schematics with liquid-cooled heat exchangers

Definitions

  • the present invention relates to a cooling device for an exhaust gas recirculation circuit of an engine, especially a motor vehicle. It also relates to a set of an exhaust gas recirculation circuit and such a cooling device. It also relates to an intake gas supply system for an engine, particularly a supercharged diesel engine, comprising an air supply circuit of said engine and such an assembly. Such a device is shown in FR 2915771 A1 .
  • EGR exhaust gas Recirculated exhaust gas
  • the invention relates to a cooling device for an exhaust gas recirculation circuit of an engine, in particular a motor vehicle, said circuit comprising a valve for controlling the circulation of said gas, said device comprising a heat exchanger heat exchanger, said EGR exchanger, intended to allow a heat exchange between the exhaust gas passing through said recirculation circuit and a cooling fluid, and means for cooling said valve.
  • said device comprises a cooling loop, said high temperature shaped so that said cooling means of the valve are traversed by a first fluid, and a second cooling loop, said low temperature, shaped for that the EGR exchanger is traversed by a second fluid, provided at a lower temperature than the first fluid.
  • loop is meant together equipment, including exchangers, directly connected to each other or by hoses or equivalent, said equipment and hoses being traversed by the fluid flowing through the loop.
  • said high and low temperature loops respectively integrate the cooling means of the EGR circulation control valve and the EGR exchanger.
  • the invention also relates to an assembly of an exhaust gas recirculation circuit, comprising a valve for controlling the circulation of said gas, and a cooling device for said circuit, as mentioned above.
  • said valve comprises a body and said cooling means of the valve consist of ducts, formed in said body so as to allow the circulation of the first fluid in said valve.
  • the invention also relates to an intake gas supply device for an engine, particularly a supercharged diesel engine, comprising an air supply circuit of said engine and an assembly as described above, the circuit of recirculation of exhaust gas opening into said air supply circuit.
  • the invention relates to a cooling device for an exhaust gas recirculation circuit of an engine 1, in particular a heat engine, for example diesel engine, of a motor vehicle.
  • said circuit comprises a valve 2 for controlling the circulation of said gas.
  • Said valve 2 is provided, for example, to allow flow control of the EGR passing through said circuit.
  • the device according to the invention comprises a heat exchanger 3, called EGR exchanger, intended to allow a heat exchange between the exhaust gas passing through said recirculation circuit and a cooling fluid, and means 4 for cooling the exhaust gas.
  • said valve 1 for controlling the flow of EGR.
  • said device comprises a cooling loop 5, referred to as high temperature, illustrated more precisely in FIG. figure 1 , traversed by a first fluid. It is shaped, for example, so as to cool said engine 1 and may include a cooling radiator 6, said high temperature cooling radiator, allowing a heat exchange between a flow of ambient air and said first fluid.
  • Said high temperature cooling loop further comprises, for example, a water outlet housing 7, a thermostat 8 and a pump 9.
  • the water outlet housing 7 is mounted directly on the engine 1 and connected by a pipe 10 to the high temperature cooling radiator 6.
  • a pipe 11 is provided between the high temperature cooling radiator 6 and an inlet 1a of said first fluid in the engine 1.
  • the pump 9 is provided on the pipe 11 connecting the high temperature cooling radiator 6 and the engine 1, and the thermostat 8 is provided on the pipe 10 connecting the water outlet housing 7 and the high temperature cooling radiator 6.
  • the pump 9 causes a flow of fluid through said engine 1 where the first fluid cools the engine by charging in calories.
  • the first fluid then enters the water outlet housing 7 and, if the thermostat 8 is open, runs through the pipe 10 connecting the water outlet housing 7 and the high temperature cooling radiator 6. It then enters said high temperature cooling radiator 6 where it is cooled before returning to the engine through line 11 connecting the high temperature cooling radiator 6 and the engine 1.
  • the device according to the invention also comprises a second cooling loop 12, referred to as low temperature, detailed in FIG. figure 2 , traversed by a second fluid.
  • Said low-temperature loop comprises, for example, a cooling radiator 13, said low-temperature cooling radiator, allowing a heat exchange between a flow of ambient air and the second fluid, provided flowing in said radiator.
  • said high temperature loop 5 is shaped so that said means 4 for cooling the EGR circulation control valve 2 are traversed by the first fluid and said second loop is shaped so that the EGR exchanger 3 is traveled by said second fluid, provided at a temperature lower than that of the first fluid.
  • Said first and second fluids are, for example, heat transfer fluids of the same chemical nature, such as water added with glycol.
  • said high and low temperature loops 5, 12 are independent and do not communicate with each other. However, it may be provided that said loops communicate with each other, in particular for the purpose of sharing the heat dissipation capabilities of the high and low temperature radiators 6, 13.
  • Said radiators 6, 13 high and low temperature are positioned relative to each other, for example so that they are crossed, in series, by the same air flow. In other words, they are placed one behind the other in the direction of flow of the air flow. However, they could also be arranged one below the other. They form, for example, a module that can be attached integrally, at the front of the vehicle.
  • bypass lane 14 is intended to be traversed by said first fluid when the thermostat 8 is closed, that is to say, when the engine 1 does not need to be cooled.
  • the high temperature loop 5 also comprises a heating radiator 15.
  • a heating radiator 15 This is, for example, a heating radiator of an air conditioning installation of the passenger compartment of the motor vehicle.
  • Said loop 5 is shaped to allow a heat exchange between air passing through said heating radiator 15 and the first fluid leaving said cooling means 4 of the valve 2, so as to heat the air passing through said heating radiator .
  • said high temperature loop 5 comprises a pipe 16, connecting, on the one hand, the inlet 1a of the first fluid in the engine and, on the other hand, an inlet of the first fluid in the valve 2 and an inlet of the first fluid in the heating radiator 15. It also comprises a pipe 17, connecting, on the one hand, an outlet of the first fluid of the valve 2 and an outlet of the first fluid of the heating radiator 15, and, On the other hand, the water outlet housing 7.
  • the valve 2 and the heating radiator 15 are placed in parallel in the direction of flow of the first fluid. The calories dissipated by the valve 2 in the circuit can thus reach the heating radiator 15, in particular by the bypass lane 14.
  • the low temperature loop 12 may include a low temperature pump 18 to ensure the circulation of the second fluid.
  • Said low temperature loop 12 furthermore comprises, for example, a charge air cooler 19.
  • the latter is intended to allow a heat exchange between the air passing through an air supply circuit of the engine 1 and the fluid of the engine. said loop 12 low temperature.
  • the charge air cooler 19, the EGR exchanger 2 and the low-temperature radiator 13 are connected in series according to the direction of flow of the fluid in the low-temperature loop 12.
  • the invention also relates to an assembly of an exhaust gas recirculation circuit, comprising a valve 2 for controlling the circulation of said gas, and a cooling device for said circuit, as described above.
  • Said valve 2 comprises, for example, a body and said means 4 for cooling the valve 2 are constituted by pipes, not shown, formed in said body so as to allow the circulation of the first fluid in said valve 2.
  • valve 2 and the EGR exchanger are connected in series, in that order, according to the direction of flow of the EGR.
  • bypass valve may be integrated in said high temperature loop.
  • the invention also relates to an intake gas supply system for an engine, particularly a supercharged diesel engine.
  • said power system comprises a circuit 20 for supplying air to said motor and an assembly as described above.
  • the gas recirculation circuit exhaust of said assembly illustrated 21, opens into said air supply circuit 20, for example at a manifold 22 for distribution of the inlet gas in the engine 1.
  • Said air supply circuit comprises, for example, a valve 23 for controlling the flow of air, ensuring, in particular, a regulation of the air flow and / or participating in the regulation of the flow of EGR, in common with the valve 2 of the circuit 21 for recirculating the exhaust gas.
  • Said system may further comprise a turbo compressor 24 having a turbine 25, located in the path 26 for passing the exhaust gases from the engine 1 and driven by them, and a compressor 27, driven by said turbine 25, for compress the air circulating in the supply circuit.
  • Said exhaust gas recirculation circuit 21 draws the exhaust gases upstream of the turbine 25 and introduces them into the air supply circuit 20 downstream of the compressor 27.
  • the charge air cooler 19 and the air flow control valve 23 are provided, for example, in series, in this order, according to the direction of flow. air in said intake circuit 20, this between the turbine 27 and the injection point of the EGR in said supply circuit 20.
EP11712225.9A 2010-03-31 2011-03-28 Dispositif de refroidissement pour un circuit de recirculation de gaz d'echappement d'un moteur Active EP2553232B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1052413A FR2958327B1 (fr) 2010-03-31 2010-03-31 Dispositif de refroidissement pour un circuit de recirculation de gaz d'echappement d'un moteur, notamment de vehicule automobile.
PCT/EP2011/054750 WO2011120931A1 (fr) 2010-03-31 2011-03-28 Dispositif de refroidissement pour un circuit de recirculation de gaz d'echappement d'un moteur

Publications (2)

Publication Number Publication Date
EP2553232A1 EP2553232A1 (fr) 2013-02-06
EP2553232B1 true EP2553232B1 (fr) 2014-12-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP11712225.9A Active EP2553232B1 (fr) 2010-03-31 2011-03-28 Dispositif de refroidissement pour un circuit de recirculation de gaz d'echappement d'un moteur

Country Status (7)

Country Link
US (1) US9599069B2 (zh)
EP (1) EP2553232B1 (zh)
JP (1) JP5898174B2 (zh)
KR (1) KR101821963B1 (zh)
CN (1) CN103038475B (zh)
FR (1) FR2958327B1 (zh)
WO (1) WO2011120931A1 (zh)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101664731B1 (ko) 2015-07-30 2016-10-12 현대자동차주식회사 보조 쿨링 시스템
CN105179062B (zh) * 2015-10-16 2018-05-04 安徽江淮汽车集团股份有限公司 一种带双膨胀水壶的双循环冷却系统改进结构
CN105179059B (zh) * 2015-10-16 2018-05-04 安徽江淮汽车集团股份有限公司 一种包括有双膨胀水壶的冷却系统
FR3056289B1 (fr) * 2016-09-16 2018-09-28 Valeo Systemes Thermiques Circuit de gestion thermique pour vehicule automobile
CN107288734A (zh) * 2017-08-17 2017-10-24 东风贝洱热系统有限公司 重型柴油发动机高低温冷却系统及冷却回路
CN108915840B (zh) * 2018-07-10 2020-07-07 中车大连机车车辆有限公司 冷却水的温度控制方法、装置及系统

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JPH08165925A (ja) * 1994-12-14 1996-06-25 Toyota Motor Corp 内燃機関のｅｇｒクーラ用冷却水循環装置
JP3420403B2 (ja) * 1995-09-13 2003-06-23 本田技研工業株式会社 エンジンのｅｇｒバルブ支持構造
US5740785A (en) * 1997-06-09 1998-04-21 Southwest Research Institute Two way-high pressure loop, exhaust gas recirculation valve
JP3388157B2 (ja) * 1997-10-13 2003-03-17 日野自動車株式会社 Ｅｇｒバルブの冷却構造
JPH11280565A (ja) * 1998-03-31 1999-10-12 Isuzu Motors Ltd Ｅｇｒ装置
EP1467082B1 (en) * 2002-01-16 2016-03-30 Mitsubishi Denki Kabushiki Kaisha Exhaust gas recirculating device
JP2003278608A (ja) * 2002-03-20 2003-10-02 Hino Motors Ltd Ｅｇｒ装置
JP4163985B2 (ja) * 2003-03-26 2008-10-08 日産ディーゼル工業株式会社 エンジンの冷却系回路
SE527479C2 (sv) * 2004-05-28 2006-03-21 Scania Cv Ab Arrangemang för återcirkulation av avgaser hos en överladdad förbränningsmotor
JP2006273149A (ja) * 2005-03-29 2006-10-12 Tgk Co Ltd 暖房用温水制御システム及び温水切替弁
JP2007107389A (ja) * 2005-10-11 2007-04-26 Mazda Motor Corp エンジンのｅｇｒバルブ装置
JP4679485B2 (ja) * 2006-07-10 2011-04-27 カルソニックカンセイ株式会社 Ｅｇｒ装置
SE531102C2 (sv) * 2006-12-05 2008-12-16 Scania Cv Ab Arrangemang hos en överladdad förbränningsmotor
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FR2915771B1 (fr) * 2007-05-03 2014-01-03 Renault Sas Ensemble de refroidissement d'un moteur a combustion interne
JP4814188B2 (ja) * 2007-09-19 2011-11-16 株式会社クボタ エンジン

Also Published As

Publication number Publication date
FR2958327B1 (fr) 2012-03-23
JP2013524069A (ja) 2013-06-17
CN103038475B (zh) 2016-08-03
WO2011120931A1 (fr) 2011-10-06
US20130220290A1 (en) 2013-08-29
FR2958327A1 (fr) 2011-10-07
KR101821963B1 (ko) 2018-01-25
CN103038475A (zh) 2013-04-10
JP5898174B2 (ja) 2016-04-06
EP2553232A1 (fr) 2013-02-06
KR20130021377A (ko) 2013-03-05
US9599069B2 (en) 2017-03-21

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