2011•The Proceedings of Conference of Kanto BranchOpen access

220201 Research on Combustion in an HCCI Engine by using Spectroscopic Technique

Yusuke Takahashi, Yasuhiro Otagiri, Kenji SAITOU, Akira Iijima, Kouji Yoshida, Hideo SHOJI

Abstract

Homogeneous Charge Compression Ignition (HCCI) combustion offers the advantages of high efficiency and low emissions of pollutants. However, the characteristics of HCCI combustion can prevent suitable engine operation owing to the rapid combustion process that occurs accompanied by a steep pressure rise when the amount of fuel injected is increased. In this study, we analyzed effects of engine speed on combustion characteristics in an HCCI engine based on experimentation with actual engine. In addition, we analyzed the details of combustion characteristics by using numerical analysis of elementally reactions. As a result, cool flame reaction was moderated by increasing the engine speed.

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Key concepts: Homogeneous charge compression ignition, Combustion, Automotive engineering, Ignition system, Internal combustion engine, Compression ratio, Materials science, Environmental science