基于2阶段喷射的缸内直喷汽油机HCCI燃烧的研究  

A Study on HCCI Combustion Based on Two-stage Gasoline Direct Injection

作　　者：王志[1] 王建昕[1] 帅石金[1] 马青峻[1] 

机构地区：[1]清华大学汽车安全与节能国家重点实验室,北京100084

出　　处：《汽车工程》2005年第5期531-536,共6页Automotive Engineering

基　　金：国家基础性研究重大项目(2001CB209204);高等学校博士学科点专项科研基金项目(2002003078)资助。

摘　　要：在缸内直喷汽油机(GDI)上采用2阶段燃油喷射技术来控制缸内混合气形成和燃烧,在GDI发动机上实现了均质混合气压燃(HCCI)燃烧方式,研究了缸内2阶段汽油喷射对HCCI燃烧特性的影响。结果表明,压缩行程中的第2次喷油时间可以有效地控制燃烧始点,二次喷油持续期可以控制燃烧速率、燃烧相位和拓宽发动机负荷。In this paper, HCCI combustion is studied in a 4-stroke gasoline direct injection （GDI） engine. To control HCCI combustion with quick response, an electronically controlled two-stage gasoline injection system is adopted to control the mixture formation, ignition timing and combustion rate. The results show that HCCI ignition timing and combustion rate can be controlled and the load range can be extended by two-stage direct injection. In compression stroke, the start of 2^nd injection can be used to control the ignition timing effectively and the duration of 2^nd injection can control the combustion rate and phase and widen the operation range.

关 键 词：缸内直喷汽油机 HCCI 燃烧 2阶段喷射 燃油喷射技术 直喷汽油机 燃烧方式 缸内 均质混合气压燃 GDI发动机 

分 类 号：TK41[动力工程及工程热物理—动力机械及工程]