Miller-PCCI Combustion in an HSDI Diesel Engine with VVT

被引:25
作者
Murata, Yutaka [1 ]
Kusaka, Jin [1 ]
Daisho, Yasuhiro [1 ]
Kawano, Daisuke [2 ]
Suzuki, Hisakazu [2 ]
Ishii, Hajime [2 ]
Goto, Yuichi [2 ]
机构
[1] Waseda Univ, Tokyo, Japan
[2] NTSEL, Chofu, Tokyo, Japan
基金
美国国家卫生研究院;
关键词
Ignition - Compression ratio (machinery) - Diesel engines;
D O I
10.4271/2008-01-0644
中图分类号
U [交通运输];
学科分类号
08 ; 0823 ;
摘要
A variable valve timing (VVT) mechanism has been applied in a high-speed direct injection (HSDI) diesel engine. The effective compression ratio (epsilon(eff)) was lowered by means of late intake valve closing (LIVC), while keeping the expansion ratio constant. Premixed charge compression ignition (PCCI) combustion, adopting the Miller-cycle, was experimentally realized and numerically analyzed. Significant improvements of NOx and soot emissions were achieved for a wide range of engine speeds and loads, frequently used in a transient mode test. The operating range of the Miller-PCCI combustion has been expanded up to an IMEP of 1.30 MPa.
引用
收藏
页码:444 / 456
页数:13
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