CN101960132A - 机动车内燃机egr回路 - Google Patents

机动车内燃机egr回路 Download PDF

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CN101960132A
CN101960132A CN2008801278229A CN200880127822A CN101960132A CN 101960132 A CN101960132 A CN 101960132A CN 2008801278229 A CN2008801278229 A CN 2008801278229A CN 200880127822 A CN200880127822 A CN 200880127822A CN 101960132 A CN101960132 A CN 101960132A
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egr
compressor
exhaust
loop
receive
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塞缪尔·勒鲁
劳伦特·艾伯特
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Valeo Systemes de Controle Moteur SAS
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Valeo Systemes de Controle Moteur SAS
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    • 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
    • F02M26/65—Constructional details of EGR valves
    • F02M26/71—Multi-way valves
    • 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
    • F02M26/02—EGR systems specially adapted for supercharged engines
    • F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
    • F02M26/06—Low pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust downstream of the turbocharger turbine and reintroduced into the intake system upstream of the compressor
    • 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
    • F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
    • F02M26/21—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system with EGR valves located at or near the connection to the intake system
    • 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
    • F02M26/65—Constructional details of EGR valves
    • F02M26/70—Flap valves; Rotary valves; Sliding valves; Resilient valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/0406—Layout of the intake air cooling or coolant circuit
    • F02B29/0418—Layout of the intake air cooling or coolant circuit the intake air cooler having a bypass or multiple flow paths within the heat exchanger to vary the effective heat transfer surface
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/0406—Layout of the intake air cooling or coolant circuit
    • F02B29/0437—Liquid cooled heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • 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
    • F02M26/14—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
    • F02M26/15—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system in relation to engine exhaust purifying apparatus
    • 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

Abstract

一种机动车内燃机EGR回路，包括：发动机(1)；燃烧气体排气歧管(2)；涡轮增压器(4)的涡轮(5)；具有冷却器(9)的排气再循环(EGR)回路(8)；涡轮增压器的压缩机(6)，用于接收排气和新鲜空气的一部分，且在该压缩机中，混合物的压力增加；发动机的进气歧管(3)，用于接收来自压缩机的空气；用于在涡轮(5)下游清洁排气的颗粒过滤器(7)和低压单瓣片三通阀。阀(10)被布置在压缩机的上游，经由其出口(17)连接到该压缩机，以在其两个入口(15、16)处接收新鲜空气及被清洁和冷却的排气。

Description

机动车内燃机EGR回路
技术领域
本发明涉及机动车的内燃机的EGR回路，包括：发动机；燃气排气歧管；涡轮增压器(turbocharger)的涡轮；具有冷却器的排气再循环(EGR)回路；涡轮增压器的压缩机，该压缩机接收排气和冷空气的一部分且在其中混合物的压力增加；接收来自压缩机的空气的发动机的进气歧管。
背景技术
EGR回路用于通过降低燃烧温度、通过减慢氧化剂混合物的燃烧和吸收部分卡路里来降低二氧化氮(nitrogen dioxide)的排放。EGR回路的冷却器使得可以降低高发动机速度(高负荷)时的燃烧温度。
通常，EGR回路包括在涡轮增压器的涡轮下游的低压三通阀和颗粒过滤器，该过滤器用于留住排气中的烟灰(soot)，由此被清洁的气体随后再生。
本发明从一特别问题产生，但是该问题已被忽略来限定本发明。
迄今，颗粒过滤器靠近发动机，且甚至并入到发动机中，且EGR阀在排气口的下游。作为EGR阀，具有一个瓣片(单瓣片)的三通阀和具有两个瓣片(双瓣片)的三通阀是已知的，但是比较复杂。
发明内容
申请人提出的问题是颗粒过滤器与发动机的间隔(distancing)，也就是说车辆车架下的排气管线的通道，和由此把被清洁气体返回至发动机的问题。
在这种情况下，本申请人提出将单瓣片三通EGR阀从排气口向进气口移动的想法，换句话说从涡轮增压器的涡轮的下游移动到压缩机的上游，但是不将该移动与颗粒过滤器相对于发动机的位置关联。
因此，本发明涉及上述类型的EGR回路，具有用于在涡轮下游清洁排气的颗粒过滤器和低压单瓣片三通阀，所述回路的特征在于，该阀被布置在压缩机的上游，通过其出口连接到压缩机，且在其两个入口处接收冷空气及被清洁和冷却的排气。
根据本发明，三通EGR阀是冷阀且不再是热的，其为低成本阀，具有不再需要被冷却的电子装置。
在本发明的EGR回路的优选实施例中，三通阀和其单瓣片被设置为根据三个模式之一进行操作i)仅冷空气进入发动机；ii)空气和EGR气体的混合物进入；和iii)仅EGR气体进入。
附图说明
借助于本发明的EGR回路的优选实施例的以下描述并参考附图，将更好地理解本发明，其中：
图1以简化方式示出了本发明的EGR回路；
图2示出了图1的回路的单瓣片三通阀，其处于仅允许冷空气进入的状态中；
图3示出了图1的回路的单瓣片三通阀，其处于允许冷空气和EGR气体的混合物进入的状态；和
图4示出了图1的回路的单瓣片三通阀，其处于仅允许EGR气体进入的状态。
具体实施方式
图1的回路包括车辆发动机1，包括：排气歧管2和其进气歧管3；涡轮增压器4，具有位于排气歧管下游的涡轮5、位于进气歧管上游的压缩机6；位于涡轮5下游的颗粒过滤器7，其在另一侧连接到车辆的消声器；和EGR支线8，在这种情况下该支线包括EGR冷却器9和低压三通阀10，该低压三通阀经由其出口连接到压缩机6，经由其两个入口连接到EGR冷却器9的出口和冷空气入口11。涡轮5被排气旋转，以由此驱动压缩机6，该压缩机在出口处连接到进气歧管3，在这种情况下是经由充水空气冷却器12，该空气冷却器还可通过阀13而被短路。
低压三通阀10包括本体14，该本体连接到第一冷空气入口15、连接到用于被清洁和再生的EGR排气的第二入口16和连接到出口17，该出口被连接到发动机的进气歧管3。本体14在这种情况下具有基本上圆形的横截面，且单个瓣片18被安装在其中以在促动器(未示出)的作用下绕主轴21旋转。瓣片18适于完全地或部分地封闭两个入口15、16中的一个或另一个。促动器由控制系统控制且位置传感器被安装在阀中以确定瓣片18的位置。
在图2中，仅冷空气(15)被摄入进气歧管3。入口16被瓣片18封闭。
在图3中，冷空气(15)和排气(16)的混合物被摄入进气歧管。进气口(inlet)和排气口(exhaust)之间的压降足以确保良好的EGR比。
在图4中，为了增加进气口和排气口之间的压降和确保良好的EGR比，仅排气被摄入进气歧管3。冷空气入口15被瓣片18封闭。
三通阀10可具有不同于本实例的构造而不偏离本发明的范围，特别地，导管15、16、17可在数量和位置方面变化。同样，单瓣片18可具有弯曲形状或具有多个倾斜边缘，这依赖于这些导管15、16、17的配置。

Claims (2)

1.一种机动车的内燃机的EGR回路，包括：发动机(1)；燃烧气体排气歧管(2)；涡轮增压器(4)的涡轮(5)；具有冷却器(9)的排气再循环(EGR)回路(8)；涡轮增压器的压缩机(6)，用于接收排气和冷空气的一部分，且在该压缩机中，混合物的压力被增加；发动机的进气歧管(3)，用于接收来自压缩机的空气；用于在涡轮(5)下游清洁排气的颗粒过滤器(7)；和低压单瓣片三通阀，所述回路的特征在于，阀(10)被布置在压缩机(6)的上游，经由其出口(17)连接到该压缩机，以在其两个入口(15、16)处接收冷空气及被清洁和冷却的排气。
2.如权利要求1所述的EGR回路，其中，三通阀(10)和其单瓣片(18)被设置为根据以下三个模式之一进行操作：i)仅冷空气进入发动机；ii)空气和EGR气体的混合物进入；和iii)仅EGR气体进入。
CN2008801278229A 2008-01-03 2008-12-18 机动车内燃机egr回路 Pending CN101960132A (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0800025A FR2926113A1 (fr) 2008-01-03 2008-01-03 Boucle egr d'un moteur a combustion interne d'un vehicule automobile
FR0800025 2008-01-03
PCT/FR2008/001779 WO2009106725A1 (fr) 2008-01-03 2008-12-18 Boucle egr d'un moteur a combustion interne d'un vehicule automobile

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US (1) US20110061380A1 (zh)
EP (1) EP2245292A1 (zh)
JP (1) JP2011508849A (zh)
KR (1) KR20100096277A (zh)
CN (1) CN101960132A (zh)
FR (1) FR2926113A1 (zh)
WO (1) WO2009106725A1 (zh)

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CN102562370A (zh) * 2012-02-07 2012-07-11 上海交通大学 利用进气压力调节的排气再循环系统
CN104136759A (zh) * 2012-02-29 2014-11-05 大陆汽车有限责任公司 内燃机的混合阀
CN104136759B (zh) * 2012-02-29 2016-11-30 大陆汽车有限责任公司 内燃机的混合阀
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CN102606284A (zh) * 2012-03-27 2012-07-25 上海交通大学 机械调节式进气系统
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CN105484880A (zh) * 2015-12-09 2016-04-13 荣文光 涡轮增压发动机涡轮滞后解决方案
CN105864458A (zh) * 2016-06-02 2016-08-17 吉林省众鑫汽车装备有限公司 一种流体流量方向控制阀
CN105864458B (zh) * 2016-06-02 2019-05-10 吉林省众鑫汽车装备有限公司 一种流体流量方向控制阀
CN108662198A (zh) * 2018-06-23 2018-10-16 安徽京仪自动化装备技术有限公司 一种带旁通口的多路流量及温度控制阀

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US20110061380A1 (en) 2011-03-17
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WO2009106725A1 (fr) 2009-09-03
FR2926113A1 (fr) 2009-07-10
JP2011508849A (ja) 2011-03-17

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