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

页码：737 / 745

页数：8

共 12 条

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