燃烧室形状对国六柴油机性能的影响  

Effect of Combustion Chamber Shape on Performance of ChinaⅥDiesel Engine

作　　者：殷志雄 孟令群 陈员娥 袁经煌 陈静 汪晓健 YIN Zhixiong;MENG Lingqun;CHEN Yuane;YUAN Jinghuang;CHEN Jing;WANG Xiaojian(Jiangxi Isuzu Engine Co.,Ltd.,Nanchang 330200,China;Wuxi Wolffu Automotive Technology Co.,Ltd.,Wuxi 214100,China)

机构地区：[1]江西五十铃发动机有限公司,江西南昌330200 [2]无锡沃尔福汽车技术有限公司,江苏无锡214100

出　　处：《车用发动机》2023年第4期9-15,共7页Vehicle Engine

摘　　要：为满足国六b排放法规要求,基于同一台国六柴油机,在相同压缩比下对3种不同形状特征的ω型燃烧室进行了对比研究。使用仿真模拟及台架测试的方法,研究了不同燃烧室特征对柴油机经济性及排放的影响。研究表明:深坑、大凹坑半径的燃烧室燃油消耗率较差,但烟度较好;浅坑、小凹坑半径的燃烧室烟度较差,但燃油消耗率较好;而凹坑深度及凹坑半径适中的燃烧室燃油消耗率及烟度均较优,按此燃烧室特征设计开发的国六柴油机具有良好的经济性及排放表现。In order to meet the requirements of ChinaⅥb emission regulation,the comparison of three differentω-type combustion chambers were conducted based on the same ChinaⅥdiesel engine under the same compression ratio.The effects of different combustion chamber characteristics on economy and emission were studied through the method of simulation and bench test.The results show that the combustion chamber with deep and large pit radius has poor specific fuel consumption,but less soot.The combustion chamber with shallow and small pit radius has poor soot performance,but acceptable specific fuel consumption.The combustion chamber with moderate pit depth and radius has better performance for both specific fuel consumption and soot.The ChinaⅥdiesel engine designed and developed with this combustion chamber characteristic has good economy and emission performance.

关 键 词：柴油机 燃烧室 结构设计 燃油消耗率 排放 

分 类 号：TK423.2[动力工程及工程热物理—动力机械及工程]