Study the ethanol SI/HCCI combustion mode transition by using the fast thermal management system

查看全文 作　　者：PENG YaPing TAN ManZhi GUO Liang LIU FaFa LI Hua GUO [1]YingNan

机构地区：[1]Department of Internal Combustion Engine, Campus Nanling, Jilin University, Changchun 130022, China

出　　处：《Chinese Science Bulletin》索引2007年第52卷第19期,共6页

基　　金：the National Basic Research Program of China (Grant No. 2001CB9206) 摘　　要：In this paper the ethanol homogeneous charge compression ignition (HCCI) is achieved in a modified single cylinder engine by means of a self-developed fast thermal management system (FTMS), and the ethanol SI/HCCI operation regions are defined. It can be concluded that the thermal efficiency is higher and the NOx emission is lower in the HCCI operation region. In addition, the maximum NOx emission drops by 98%. The ethanol SI/HCCI combustion mode transition is conducted in different conditions near the SI/HCCI operation boundaries. It is likely to realize the transition by the utilization of FTMS. However, it is impossible to complete the transition within one operating cycle under current operation conditions. There are fluctuations in engine speed and brake mean effective pressure during the transition process. In order to reduce the fluctuations during the transition, the initial work concerning the effects of the spark ignition on the transition smoothness is carried out and the investigation indicates that the engine speed and brake mean effective pressure fluctuations cannot be eradicated only through spark ignition. Therefore, the control strategies combined with other factors should be further optimized. 关键词：电荷压缩点火乙醇燃烧模型火花

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Study the ethanol SI/HCCI combustion mode transition by using the fast thermal management system

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