Study on selection of combustion chamber geometry suitable to PCCI operation of a diesel engine

被引：0
作者：
Horibe, Naoto [1 ]
Takahashi, Ken [1 ]
Harada, Shinji [1 ]
Kee, Sung-Sub [1 ]
Ishiyama, Takuji [1 ]
Shioji, Masahiro [1 ]
机构：
[1] Graduate School of Energy Science, Kyoto University, Sakyo-ku, Kyoto, 606-8501, Yoshida-Honmach
来源：
Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B | 2008年 / 74卷 / 03期
关键词：
Combustion chamber; Diesel engine; Fuel injection; Injection condition; PCCI; Pollutant;
D O I：
10.1299/kikaib.74.737
中图分类号：
学科分类号：
摘要：
The objective of this study is to obtain a strategy for selecting the combination of injection conditions and combustion chamber geometry to achieve low emissions with high thermal efficiency in direct-injection PCCI operation of a diesel engine. To this end, an experimental study was conducted using a single-cylinder test engine equipped with a common-rail injection system and a cooled EGR system. The injection conditions, including injection timing, spray angle and injection quantity, and combustion chamber geometry were varied under a reduced compression ratio and a high EGR rate conditions. The results indicate that CO emission can be reduced by selecting injection timings that provide high peak heat release rate. To improve the CO-NOx trade-off relation, the spray angle should be properly selected depending on the combustion chamber geometry.
引用
收藏
页码：737 / 745
页数：8
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