CN106640430A - 六缸内燃机废气再循环系统 - Google Patents

六缸内燃机废气再循环系统 Download PDF

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Publication number
CN106640430A
CN106640430A CN201611181991.3A CN201611181991A CN106640430A CN 106640430 A CN106640430 A CN 106640430A CN 201611181991 A CN201611181991 A CN 201611181991A CN 106640430 A CN106640430 A CN 106640430A
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China
Prior art keywords
valve
exhaust gas
inlet manifold
internal combustion
combustion engine
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CN201611181991.3A
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English (en)
Inventor
孙兰娟
梁冠楠
李健
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Nanjing Shijiecun Automobile Power Co Ltd
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Nanjing Shijiecun Automobile Power Co Ltd
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Priority to CN201611181991.3A priority Critical patent/CN106640430A/zh
Publication of CN106640430A publication Critical patent/CN106640430A/zh
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/0025Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D41/0047Controlling exhaust gas recirculation [EGR]
    • F02D41/0065Specific aspects of external EGR control
    • F02D41/0072Estimating, calculating or determining the EGR rate, amount or flow
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/0025Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D41/0047Controlling exhaust gas recirculation [EGR]
    • F02D41/0077Control of the EGR valve or actuator, e.g. duty cycle, closed loop control of position
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D21/00Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas
    • F02D21/06Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air
    • F02D21/08Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air the other gas being the exhaust gas of engine
    • F02D2021/083Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air the other gas being the exhaust gas of engine controlling exhaust gas recirculation electronically

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Abstract

本发明公开了一种六缸内燃机废气再循环系统,包括发动机进气歧管、出气歧管、涡轮增压器和再循环通道,其特征在于,于所述排气歧管与再循环通道的连接处设有一阀门,该阀门具有P0、P1和P2三个档位,上述档位能够封闭再循环通道与发动机进气歧管的连通或控制一个或两个缸内的废气进入进气歧管。本发明提出了一种六缸内燃机废气再循环系统,通过设置阀门来控制废气再循环至进气歧管,可以用简单结构实现16.7%和33.3%两档EGR率的废气再循环,满足发动机大多数工况EGR需求的同时,可以明显降低EGR系统的成本。

Description

六缸内燃机废气再循环系统
技术领域
本发明具体涉及一种六缸内燃机废气再循环系统。
背景技术.
排放法规越来越严格的今天,内燃机不得不增加越来越多的新技术来满足排放法规要求和适应低油耗政策。一般新技术的增加必然导致内燃机成本的显著增高,这对内燃机的发展产生制约。
EGR应用可以明显改善内燃机NOX的排放。但是无论是目前低压EGR、高压EGR、高低压EGR的应用均对内燃机的成本提高太多。D-EGR虽可以实现低成本,但是D-EGR的EGR率单一,无法满足多种工况的需求。
发明内容
针对现有技术中的不足,本发明提供一种六缸内燃机废气再循环系统。
一种六缸内燃机废气再循环系统,包括发动机进气歧管、出气歧管、涡轮增压器和再循环通道,其特征在于,于所述排气歧管与再循环通道的连接处设有一阀门,该阀门具有P0、P1和P2三个档位,上述档位能够封闭再循环通道与发动机进气歧管的连通或控制一个或两个缸内的废气进入进气歧管。
优选的,所述阀门处于P0档位时能够封闭所述再循环通道与进气歧管的连通;阀门处于P1档位时允许一个缸内的废气循环至所述进气歧管;阀门处于P2档位时允许两个缸内的废气循环至所述进气歧管。
本发明提出了一种六缸内燃机废气再循环系统,通过设置阀门来控制废气再循环至进气歧管,可以用简单结构实现16.7%和33.3%两档EGR率的废气再循环,满足发动机大多数工况EGR需求的同时,可以明显降低EGR系统的成本。
附图说明
为了更清楚地说明本发明实施例中的技术方案,下面将对实施例描述中所需要使用的附图作简单地介绍。
图1为本发明的系统图。
图中数字表示:
1、进气歧管 2、排气歧管 3、涡轮增压器 4、再循环通道
5、气缸 6、阀门。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述。
图1所示,一种六缸内燃机废气再循环系统,包括发动机进气歧管1、出气歧管、涡轮增压器3和再循环通道4,于所述排气歧管2与再循环通道4的连接处设有一阀门6,该阀门6具有P0、P1和P2三个档位,上述档位能够封闭再循环通道4与发动机进气歧管1的连通或控制一个或两个缸内的废气进入进气歧管1。所述阀门6处于P0档位时能够封闭所述再循环通道4与进气歧管1的连通;阀门6处于P1档位时允许一个缸内的废气循环至所述进气歧管1;阀门6处于P2档位时允许两个缸内的废气循环至所述进气歧管1。
实施原理:图1所示,气缸5依次排列,在六缸一体排气歧管2的第五个气缸5位置设置一个阀门6,此阀门6有三个档位。气体在进入涡轮增压器3后进入发动机内部的进气歧管1,然后通过气缸5后自排气歧管2出,当阀门6置于P0位置时,EGR通道属于关闭状态,EGR率为0%,此挡一般在怠速冷机和全负荷时候使用。可以避免发动怠速抖动、熄火和全负荷性能不足;当阀门6位置处于P1位置时,六缸的废气全部经过EGR通道流入进气歧管1,与空气混合,此时发动机的EGR率为16.7%,此档适用于中低速小负荷,避免燃烧变差;当阀门6位置处于P2位置时,五缸和六缸的废气全部经过EGR通道进入进气歧管1,与空气充分混合,此时发动机的EGR率为16.7%,此档适用于中高速大负荷,EGR率需求较高的工况。
ECU根据发动机工况判定需求的EGR率,并对比确认与哪个档位EGR率接近,然后将执行信号传递给阀门6实现阀门6档位的控制。
本发明提出了一种六缸内燃机废气再循环系统,通过设置阀门6来控制废气再循环至进气歧管1,可以用简单结构实现16.7%和33.3%两档EGR率的废气再循环,满足发动机大多数工况EGR需求的同时,可以明显降低EGR系统的成本。
对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的,本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下,在其它实施例中实现。

Claims (2)

1.一种六缸内燃机废气再循环系统,包括发动机进气歧管、出气歧管、涡轮增压器和再循环通道,其特征在于,于所述排气歧管与再循环通道的连接处设有一阀门,该阀门具有P0、P1和P2三个档位,上述档位能够封闭再循环通道与发动机进气歧管的连通或控制一个或两个缸内的废气进入进气歧管。
2.根据权利要求1所述的六缸内燃机废气再循环系统,其特征在于,所述阀门处于P0档位时能够封闭所述再循环通道与进气歧管的连通;阀门处于P1档位时允许一个缸内的废气循环至所述进气歧管;阀门处于P2档位时允许两个缸内的废气循环至所述进气歧管。
CN201611181991.3A 2016-12-20 2016-12-20 六缸内燃机废气再循环系统 Pending CN106640430A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107559106A (zh) * 2017-10-30 2018-01-09 潍柴动力股份有限公司 一种egr系统及其混合进气结构

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6220233B1 (en) * 1999-10-13 2001-04-24 Caterpillar Inc. Exhaust gas recirculation system having variable valve timing and method of using same in an internal combustion engine
CN104254678A (zh) * 2012-02-06 2014-12-31 V·拉比 用于内燃机的高压火花点火及分层设备
WO2014005127A3 (en) * 2012-06-28 2015-06-25 Cummins, Inc. Techniques for controlling a dedicated egr engine
CN105089863A (zh) * 2015-09-10 2015-11-25 谢晓宇 一种多缸四冲程内燃机排气再循环装置
CN105317569A (zh) * 2014-07-17 2016-02-10 福特环球技术公司 用于专用egr汽缸排气温度控制的系统和方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6220233B1 (en) * 1999-10-13 2001-04-24 Caterpillar Inc. Exhaust gas recirculation system having variable valve timing and method of using same in an internal combustion engine
CN104254678A (zh) * 2012-02-06 2014-12-31 V·拉比 用于内燃机的高压火花点火及分层设备
WO2014005127A3 (en) * 2012-06-28 2015-06-25 Cummins, Inc. Techniques for controlling a dedicated egr engine
CN105317569A (zh) * 2014-07-17 2016-02-10 福特环球技术公司 用于专用egr汽缸排气温度控制的系统和方法
CN105089863A (zh) * 2015-09-10 2015-11-25 谢晓宇 一种多缸四冲程内燃机排气再循环装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107559106A (zh) * 2017-10-30 2018-01-09 潍柴动力股份有限公司 一种egr系统及其混合进气结构

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Application publication date: 20170510