点火能量对稀燃增压CNG发动机性能影响的试验研究  

An Experimental Study on the Effects of Ignition Energy on the Performance of Lean-Burn Turbocharged CNG Engine

作　　者：王都[1] 盛利 冒晓建[1] 卓斌[1] 

机构地区：[1]上海交通大学机械与动力工程学院,上海200240 [2]广西玉柴机器集团有限公司,玉林537005

出　　处：《汽车工程》2009年第10期915-918,共4页Automotive Engineering

基　　金：国家863计划项目(2006AA11A1A9)资助

摘　　要：对一台稀燃增压压缩天然气(CNG)发动机进行台架试验,以揭示点火能量对其性能的影响。结果表明,当点火能量大于25m J后,点火能量对CNG发动机动力性、经济性和排放性能的影响并不明显,但却会引起稀燃失火界限的较大改变。在综合权衡发动机性能和点火线圈可靠性这两个相互矛盾的因素后,选用45m J作为该天然气发动机的点火能量。A bench test is conducted on a lean-burn turbocharged compressed natural gas （CNG） engine to reveal the effects of ignition energy on its performance. The test results show that when ignition energy is more than 25mJ, the effects of ignition energy on the power, fuel economy and emissions of CNG engine are not obvious, but it greatly changes lean misfire range. After making some tradeoff between engine performance and the reliability of ignition coil, 45mJ is chosen as the ignition energy for the CNG engine.

关 键 词：天然气发动机 性能 点火能量 稀燃 增压 

分 类 号：TK437[动力工程及工程热物理—动力机械及工程]