摘要
研究了某电喷LPG发动机快速燃烧过程的循环变动。结果表明,基于高能双火花塞点火模式的快速燃烧系统的燃烧压力峰值以及对应的相位波动范围小于高能单点火模式;强涡流使发动机压力峰值相位产生较大波动。在稀燃模式下,高能双点火模式与普通单点火模式相比,不但稀燃极限得到了扩展,燃烧压力峰值的循环变动范围非常小,其对应的相位波动范围也较小。
The rapid combustion cyclic variation of an EFI LPG engine was researched in this paper.The results indicated that the combustion peak pressure and the corresponding phase fluctuation range of the rapid combustion based on the high energy double spark-plug ignition （DSI）were lower than single spark-plug ignition; strong swirl made the phases of the engine peak pressure fluctuate.Under the lean burning condition,compared with single spark-plug ignition, the DSI extended the limitation of the lean burning and had smaller deviation of the peak pressure combined with smaller phase fluctuation.
出处
《汽车技术》
北大核心
2009年第8期7-10,共4页
Automobile Technology
基金
天津市应用基础研究重点项目(06YFJZJC01500)
天津市科技支撑计划重点项目(08KFGX02700)资助
关键词
电喷LPG发动机
点火模式
燃烧过程
循环变动
Electronically controlled LPG injection SI engine,Ignition mode,Burning process,Cyclic variation
