CN115045781A - 一种实现高egr率的低压冷却egr系统 - Google Patents

一种实现高egr率的低压冷却egr系统 Download PDF

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CN115045781A
CN115045781A CN202210657598.6A CN202210657598A CN115045781A CN 115045781 A CN115045781 A CN 115045781A CN 202210657598 A CN202210657598 A CN 202210657598A CN 115045781 A CN115045781 A CN 115045781A
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egr
cooler
butterfly valve
pressure
egr cooler
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郑思瑶
王德春
刘侠
王欣
庞玉超
王雪
邢冕
李灵
杨博
徐阳
何艺璇
苗秀
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Harbin Dongan Auto Engine Co Ltd
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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
    • F02M26/02—EGR systems specially adapted for supercharged engines
    • F02M26/09—Constructional details, e.g. structural combinations of EGR systems and supercharger systems; Arrangement of the EGR and supercharger systems with respect to the engine
    • F02M26/10—Constructional details, e.g. structural combinations of EGR systems and supercharger systems; Arrangement of the EGR and supercharger systems with respect to the engine having means to increase the pressure difference between the exhaust and intake system, e.g. venturis, variable geometry turbines, check valves using pressure pulsations or throttles in the air intake or exhaust 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
    • F02M26/02—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
    • 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
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F02M26/30—Connections of coolers to other devices, e.g. to valves, heaters, compressors or filters; Coolers characterised by their location on the engine
    • 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
    • F02M26/45—Sensors specially adapted for EGR systems
    • F02M26/46—Sensors specially adapted for EGR systems for determining the characteristics of gases, e.g. composition
    • F02M26/47—Sensors specially adapted for EGR systems for determining the characteristics of gases, e.g. composition the characteristics being temperatures, pressures or flow rates
    • 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
    • F02M26/51—EGR valves combined with other devices, e.g. with intake valves or compressors
    • 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
    • F02M2026/001—Arrangements; Control features; Details
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Analytical Chemistry (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Abstract

一种实现高EGR率的低压冷却EGR系统，属于发动机技术领域。用于增大EGR率，提高发动机热效率、降低油耗。所述EGR冷却器通过进气波纹管与进气法兰一体集成连接，EGR冷却器直连发动机的排气歧管，所述EGR冷却器上方安装EGR蝶阀，并在所述EGR冷却器上靠近EGR蝶阀处安装EGR温度传感器，所述混合阀通过管路连接布置在EGR蝶阀前，用于制造负压，增大EGR蝶阀的两端压差。本发明冷却器上方安装EGR阀，整个EGR系统气路传输路径非常短，最大限度减少废气阻力，保证废气传输效率，提高EGR率，冷却器降低废气温度，增大废气密度，采用EGR温度传感器监控温度，进一步提高发动机EGR率。

Description

一种实现高EGR率的低压冷却EGR系统
技术领域
本发明属于发动机技术领域，具体涉及一种实现高EGR率的低压冷却EGR系统。
背景技术
为了提高发动机热效率，冷却EGR技术作为汽油机领域非常有效的手段，所以为了最大程度提高EGR率，设计一款低压冷却EGR是本领域技术人员亟待解决的技术问题。
发明内容
本发明为了增大EGR率，提高发动机热效率、降低油耗，进而提供一种实现高EGR率的低压冷却EGR系统；
本发明所采取的技术方案是：一种实现高EGR率的低压冷却EGR系统，包括EGR冷却器、EGR蝶阀、EGR温度传感器、压差传感器及混合阀；所述EGR冷却器通过进气波纹管与进气法兰一体集成连接，EGR冷却器直连发动机的排气歧管，所述EGR冷却器上方安装EGR蝶阀，并在所述EGR冷却器上靠近EGR蝶阀处安装EGR温度传感器，所述混合阀通过管路连接布置在EGR蝶阀前，用于制造负压，增大EGR蝶阀的两端压差。
本发明与现有技术相比具有以下有益效果：
在增压发动机上布置本发明的冷却EGR系统，通过增加混合阀、压差传感器、温度传感器零部件，增大EGR阀口径，有利于废气流通，采用蝶阀可最大限度提升流量，EGR冷却器的进气法兰集成波纹管按照圆弧过度，同时EGR冷却器直连排气歧管，冷却器上方安装EGR阀，整个EGR系统气路传输路径非常短，最大限度减少废气阻力，保证废气传输效率，提高EGR率，冷却器降低废气温度，增大废气密度，采用EGR温度传感器监控温度，进一步提高发动机EGR率。
附图说明
图1是本发明连接关系简图；
图2是本发明结构示意图；
图3是本发明侧视图；
图4是EGR阀的俯视图；
其中：1、涡轮增压器；2、三元催化器；3、EGR冷却器；4、EGR蝶阀；5、压差传感器；6、混合阀；7、EGR温度传感器；8、传感器线束安装支架；9、进气波纹管；10、进气法兰；11、固定支架一；12、进水管；13、固定支架二；14、出水管；15、压差管；16、EGR阀口径。
具体实施方式
为了更好地了解本发明的目的、结构及功能，下面结合附图，对本发明的做进一步详细的描述。
参照图1～图4所示，本发明的一种实现高EGR率的低压冷却EGR系统，包括EGR冷却器3、EGR蝶阀4、EGR温度传感器7、压差传感器5及混合阀6；所述EGR冷却器3通过进气波纹管9与进气法兰10一体集成连接，保证产品容差，保证整个EGR系统传输路劲最短，减少进气阻力，通过增大EGR阀口径16，保证废气流量及气体流通通畅，EGR冷却器3直连发动机的排气歧管(EGR冷却器3的进气法兰10与排气歧管连接)所述EGR冷却器3上方通过螺栓安装EGR蝶阀4，有效降低废气温度，并在所述EGR冷却器3上靠近EGR蝶阀4处安装EGR温度传感器7，EGR温度传感器7自身带有螺纹紧固在EGR冷却器3上，保证流通废气密度增大，混合阀6通过管路连接布置在EGR蝶阀4前，用于制造负压，增大EGR蝶阀4的两端压差。
燃烧后废气经过三元催化器2、排气歧管、EGR冷却器3、EGR蝶阀4和经过混合阀6的新鲜空气在一同流入涡轮增压器1进行压缩增大压力。
在所述EGR蝶阀4两端均设置压差管15，用于连接压差传感器5监控EGR蝶阀4两端压力，所述压差管15一端焊接在EGR冷却器3上，另一端通过转接实现与压差传感器管路连接。保证EGR蝶阀4前后压力，实现充足的EGR流量，
进气法兰10按照按照圆弧过度铸造，进气法兰10通过螺栓连接排气歧管取气口，排气歧管与三元催化器2连通，废气经三元催化器2前取气，保证足够大的进气压力，可以提升EGR流量，
通过以上措施可使EGR率提升至25％。
所述EGR冷却器3通过进水管12和出水管14进行水路冷却。
所述EGR冷却器3上设置固定支架一11、固定支架二13，且固定支架一11、固定支架二13均通过螺栓与发动机的缸体、缸盖连接，支撑固定低压冷却EGR系统。
所述EGR冷却器3上设置传感器线束安装支架8固定线束。
可以理解，本发明是通过一些实施例进行描述的，本领域技术人员知悉的，在不脱离本发明的精神和范围的情况下，可以对这些特征和实施例进行各种改变或等效替换。另外，在本发明的教导下，可以对这些特征和实施例进行修改以适应具体的情况及材料而不会脱离本发明的精神和范围。因此，本发明不受此处所公开的具体实施例的限制，所有落入本申请的权利要求范围内的实施例都属于本发明所保护的范围内。

Claims (6)

1.一种实现高EGR率的低压冷却EGR系统，其特征在于：包括EGR冷却器(3)、EGR蝶阀(4)、EGR温度传感器(7)、压差传感器(5)及混合阀(6)；所述EGR冷却器(3)通过进气波纹管(9)与进气法兰(10)一体集成连接，EGR冷却器(3)直连发动机的排气歧管，所述EGR冷却器(3)上方安装EGR蝶阀(4)，并在所述EGR冷却器(3)上靠近EGR蝶阀(4)处安装EGR温度传感器(7)，所述混合阀(6)通过管路连接布置在EGR蝶阀(4)前，用于制造负压，增大EGR蝶阀(4)的两端压差。
2.根据权利要求1所述的一种实现高EGR率的低压冷却EGR系统，其特征在于：在所述EGR蝶阀(4)两端均设置压差管(15)，用于连接压差传感器(5)监控EGR蝶阀(4)两端压力，所述压差管(15)一端焊接在EGR冷却器(3)上，另一端通过转接实现与压差传感器管路连接。
3.根据权利要求1所述的一种实现高EGR率的低压冷却EGR系统，其特征在于：所述进气法兰(10)按照按照圆弧过度铸造，进气法兰(10)通过螺栓连接排气歧管取气口。
4.根据权利要求1所述的一种实现高EGR率的低压冷却EGR系统，其特征在于：所述EGR冷却器(3)通过进水管(12)和出水管(14)进行水路冷却。
5.根据权利要求4所述的一种实现高EGR率的低压冷却EGR系统，其特征在于：所述EGR冷却器(3)上设置固定支架一(11)、固定支架二(13)，且固定支架一(11)、固定支架二(13)均通过螺栓与发动机的缸体、缸盖连接，支撑固定低压冷却EGR系统。
6.根据权利要求5所述的一种实现高EGR率的低压冷却EGR系统，其特征在于：所述EGR冷却器(3)上设置传感器线束安装支架(8)固定线束。
CN202210657598.6A 2022-06-10 2022-06-10 一种实现高egr率的低压冷却egr系统 Pending CN115045781A (zh)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115492704A (zh) * 2022-10-30 2022-12-20 赛力斯集团股份有限公司 Egr系统
CN115492704B (zh) * 2022-10-30 2024-04-23 赛力斯集团股份有限公司 Egr系统

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Application publication date: 20220913