CN106703973A - 一种可控空燃比气体发动机预燃室机构 - Google Patents

一种可控空燃比气体发动机预燃室机构 Download PDF

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CN106703973A
CN106703973A CN201710134614.2A CN201710134614A CN106703973A CN 106703973 A CN106703973 A CN 106703973A CN 201710134614 A CN201710134614 A CN 201710134614A CN 106703973 A CN106703973 A CN 106703973A
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gas
compressed air
precombustion chamber
prechamber
fuel ratio
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毕春路
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Beijing Depp Technology Co Ltd
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Beijing Depp Technology Co Ltd
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    • 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
    • F02B19/00—Engines characterised by precombustion chambers
    • F02B19/12—Engines characterised by precombustion chambers with positive ignition
    • 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
    • F02B43/00—Engines characterised by operating on gaseous fuels; Plants including such engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/02—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with gaseous fuels
    • 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
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • 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
    • 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
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)

Abstract

本发明涉及一种可控空燃比气体发动机预燃室机构，所述预燃室机构具有预燃室气体燃烧区11，该燃烧区具有从进气口10进入的可燃气体2，进入可燃气体2的时刻与进入量受电控单向阀1控制，所述预燃室机构具有压缩空气散播室9由预燃室座14和预燃室护套6分割组成，压缩空气散播室9将具有一定压力的压缩空气3通过散播孔12将含有氧气的压缩空气3均匀散播至气体燃烧区11与可燃气体2均匀混合，压缩空气3进入散播室9的时刻与进入量受电控单向阀4控制，所述预燃室机构具有火花塞支撑座8与火花塞7，火花塞7将上述可燃气体2与压缩空气3的混合气在燃烧区11点燃，燃烧的气体迅速膨胀通过火焰溢流孔13迅速传播至发动机主燃烧室点燃混合气体驱动活塞做功，所述预燃室机构具有水套5将预燃室与发动机冷却液分离。

Description

一种可控空燃比气体发动机预燃室机构
技术领域
本发明涉及一种可控空燃比气体发动机预燃室机构，尤其涉及一种具有这种机构的大功率点燃式气体内燃发动机。
背景技术
在大功率点燃式气体内燃发动机的应用中，混合气体的点燃由于功率越大混合气体体积越大，气体点燃难度越大。为提高发动机缸内混合气体的点燃率降低失火率，提高燃烧速度设计这种预燃室机构。
一般预燃室机构受到燃烧废气的影响，空气与燃气的比例不当，该机构设置压缩空气进气以及散播机构使得空气充足同时空气进气量与可燃气体进气量可控能够使预燃室内气体达到最佳点燃比例，
发明内容
本发明的目的在于提供一种预燃室机构，使得预燃室内空燃比可控，在发动机全工况下具有良好的点燃特性。
这个目的通过装有权利说明1所述特征的预燃室机构的点燃式气体内燃发动机来实现，通过散播室的空气进入减少预燃室燃烧区的废气。散播室的压缩空气进入与燃烧区的可燃气体进入均采用电子单向阀控制使空燃比λ值控制在0.8至1.1，λ表示空燃比，λ=1为理想空燃比。
附图说明
图1本发明实施例的剖视图。
具体实施方式
下面结合附图对本发明作进一步说明：
预燃室气体燃烧区11，该燃烧区具有从进气口10进入的可燃气体2，进入可燃气体2的时刻与进入量受电控单向阀1控制，所述预燃室机构具有压缩空气散播室9由预燃室座14和预燃室护套6分割组成，压缩空气散播室9将具有一定压力的压缩空气3通过散播孔12将含有氧气的压缩空气3均匀散播至气体燃烧区11与可燃气体2均匀混合，压缩空气3进入散播室9的时刻与进入量受电控单向阀4控制，所述预燃室机构具有火花塞支撑座8与火花塞7，火花塞7将上述可燃气体2与压缩空气3的混合气在燃烧区11点燃，燃烧的气体迅速膨胀通过火焰溢流孔13迅速传播至发动机主燃烧室点燃混合气体驱动活塞做功，所述预燃室机构具有水套5将预燃室与发动机冷却液分离。

Claims (9)

1.一种可控空燃比气体发动机预燃室机构，其特征在于：该预燃室机构主要应用于大功率点燃式燃气内燃发动机，所述预燃室机构具有预燃室气体燃烧区11，该燃烧区具有从进气口10进入的可燃气体2，进入可燃气体2的时刻与进入量受电控单向阀1控制，所述预燃室机构具有压缩空气散播室9由预燃室座14和预燃室护套6分割组成，压缩空气散播室9将具有一定压力的压缩空气3通过散播孔12将含有氧气的压缩空气3均匀散播至气体燃烧区11与可燃气体2均匀混合，压缩空气3进入散播室9的时刻与进入量受电控单向阀4控制，所述预燃室机构具有火花塞支撑座8与火花塞7，火花塞7将上述可燃气体2与压缩空气3的混合气在燃烧区11点燃，燃烧的气体迅速膨胀通过火焰溢流孔13迅速传播至发动机主燃烧室点燃混合气体驱动活塞做功，所述预燃室机构具有水套5将预燃室与发动机冷却液分离。
2.根据权利要求1所述的可控空燃比气体发动机预燃室机构，其特征在于，通过电控单向阀4和管路将500KPa的压缩空气3引入到散播室9，通过电控单向阀1和管路将350KPa的可燃气体2引流到气体燃烧区11。
3.根据权利要求1所述的可控空燃比气体发动机预燃室机构，其特征在于散播室9与气体燃烧区11通过散播孔12相连。
4.根据权利要求1-5所述的可控空燃比气体发动机预燃室机构，其特征在于散播孔12在预燃室座14上成圆形均匀分布。
5.根据权利要求1-3所述的可控空燃比气体发动机预燃室机构，其特征在于为了控制压缩空气3的进入时间和进入量设置了电控单向阀4。
6.根据权利要求1-3所述的可控空燃比气体发动机预燃室机构，其特征在于为了控制可燃气体2的进入时间和进入量设置了电控单向阀1。
7.根据权利要求1-6所述的可控空燃比气体发动机预燃室机构，其特征在于散播室9与燃烧区11具有一定的体积比。
8.根据权利要求1-7所述的可控空燃比气体发动机预燃室机构，其特征在于进气口10指向火花塞7火花发生部位。
9.根据权利要求1-8所述的可控空燃比气体发动机预燃室机构，其特征在于火焰溢流孔13与X轴有一特定夹角。
CN201710134614.2A 2017-03-08 2017-03-08 一种可控空燃比气体发动机预燃室机构 Pending CN106703973A (zh)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108644034A (zh) * 2018-05-18 2018-10-12 山东大学 基于臭氧助燃的大功率稀燃天然气发动机燃烧系统及方法
CN110318860A (zh) * 2019-06-26 2019-10-11 哈尔滨工程大学 一种多级燃气喷射的船用大缸径天然气发动机燃烧系统
US11542857B1 (en) * 2021-07-16 2023-01-03 Saudi Arabian Oil Company Scavenged pre-chamber using oxygen generated by a molecular sieve process

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* Cited by examiner, † Cited by third party
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JPS623119A (ja) * 1985-06-28 1987-01-09 Haruyama Jikou:Kk 圧縮着火機関
CN103775191A (zh) * 2012-09-26 2014-05-07 Ge延巴赫两合无限公司 内燃机的预燃室系统
CN204783247U (zh) * 2015-07-01 2015-11-18 江苏盛源燃气动力机械有限公司 一种大排量燃气内燃机的预燃室系统
CN105525981A (zh) * 2014-10-21 2016-04-27 卡特彼勒能源方案有限公司 用于内燃发动机的预燃室组件
CN206668394U (zh) * 2017-03-08 2017-11-24 北京德普恩科技有限公司 一种可控空燃比气体发动机预燃室机构

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS623119A (ja) * 1985-06-28 1987-01-09 Haruyama Jikou:Kk 圧縮着火機関
CN103775191A (zh) * 2012-09-26 2014-05-07 Ge延巴赫两合无限公司 内燃机的预燃室系统
CN105525981A (zh) * 2014-10-21 2016-04-27 卡特彼勒能源方案有限公司 用于内燃发动机的预燃室组件
CN204783247U (zh) * 2015-07-01 2015-11-18 江苏盛源燃气动力机械有限公司 一种大排量燃气内燃机的预燃室系统
CN206668394U (zh) * 2017-03-08 2017-11-24 北京德普恩科技有限公司 一种可控空燃比气体发动机预燃室机构

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108644034A (zh) * 2018-05-18 2018-10-12 山东大学 基于臭氧助燃的大功率稀燃天然气发动机燃烧系统及方法
CN108644034B (zh) * 2018-05-18 2019-08-09 山东大学 基于臭氧助燃的大功率稀燃天然气发动机燃烧系统及方法
CN110318860A (zh) * 2019-06-26 2019-10-11 哈尔滨工程大学 一种多级燃气喷射的船用大缸径天然气发动机燃烧系统
US11542857B1 (en) * 2021-07-16 2023-01-03 Saudi Arabian Oil Company Scavenged pre-chamber using oxygen generated by a molecular sieve process

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Application publication date: 20170524