摘要
实现汽油机的均质混合气压燃(HCCI)的难点是精确地控制着火时刻、燃烧速率以及扩展高负荷运行范围。在缸内直喷汽油机(GDI)上试验研究了分层混合气和辅助火花点火对HCCI燃烧特性的影响,考察了对不同运行工况时的适应性。开展了负阀重叠与缸内多段喷油相结合控制HCCI着火稳定性的研究,考察了不同喷油控制策略对HCCI燃烧的影响,确定了HCCI运行工况范围。
Homogeneous charge compression ignition （HCCI） has challenges in ignition timing control, combustion rate control and operating range extension. In this paper, the effects of stratified charge and assisted spark ignition on HCCI combustion was experimentally studied in a gasoline direct injection （GDI） engine. Multiple gasoline direct injection with negative valve overlap was used to control HCCI ignition stability. The different injection strategies was investigated and HCCI operation range was obtained.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2008年第1期157-160,共4页
Journal of Engineering Thermophysics
基金
高辛烷值燃料均质压燃可控着火燃烧过程的基础研究(No．2001CB209204)
关键词
缸内直喷
汽油机
HCCI
燃烧
direct injection
gasoline engine
HCCI
combustion process
