Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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An Experimental Study on the Combustion and Emission Characteristics According to the Variation of Compression Ratio and Intake Temperature Using Stratified Charge Compression Ignition in a Gasoline Direct Injection Engine

SCCI 방법을 이용한 직분식 가솔린 엔진내의 압축비 및 흡기 온도 변화에 따른 연소 및 배기 특성에 관한 실험적 연구

  • Published : 2006.06.01
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Abstract

Stratified charge compression ignition (SCCI) combustion, also known as HCCI(homogeneous charge compression ignition), offers the potential to improve fuel economy and reduce emission. In this study, SCCI combustion was studied in a single cylinder gasoline DI engine, with a direct injection system. We investigated the effects of air-fuel ratio, intake temperature and injection timing such as early injection and late injection on the attainable SCCI combustion region. Injection timing during the intake process was found to be an important parameter that affects the SCCI region width. We also find it. The effects of mixture stratification and fuel reformation can be utilized to reduce the required intake temperature for suitable SCCI combustion under each set of engine speed and compression ratio conditions.

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References

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