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Study of Hybrid Combustion System Based on Gasoline Direct Injection
Wang Zhi * #,Wang Jianxin,Shuai Shijin
Tsinghua University
*Correspondence author
#Submitted by
Subject:
Funding: 教育部博士点基金（No.20020003078）
Opened online:24 November 2004
Accepted by: none
Citation: Wang Zhi,Wang Jianxin,Shuai Shijin .Study of Hybrid Combustion System Based on Gasoline Direct Injection[OL]. [24 November 2004] http://en.paper.edu.cn/en_releasepaper/content/1291
 
 
gasoline direct injection combustion system based on two-stage injection strategy was developed by authors and presented in this paper. The combustion system can realize three combustion modes as follows: Homogeneous Charge Spark Ignition (HCSI) mode to achieve high power output density; Stratified Charge Spark Ignition (SCSI) to get optimum fuel economy; Homogeneous Charge Compression Ignition (HCCI) to obtain ultra-low emissions. The engine could be operated in HCCI combustion mode in a range of load from 1 to 5 bar IMEP and operated in SI combustion mode up to load of 8 bar IMEP. The spark ignition and electronically controlled two-stage gasoline injection system are adopted to control the mixture formation, ignition timing and combustion rate. In HCCI mode, the stratified mixture formed by two-stage injection plays a significant role in controlling HCCI and its combustion, which also proves that spark ignition can be utilized as an assistant control approach. Two control approac
Keywords:GDI; HCCI; SCSI; Combustion; Two-stage injection
 
 
 

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