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CAI 연소 방법을 이용한 직분식 가솔린 엔진내의 조기 분사시 연소 및 배기 특성에 관한 실험적 연구An Experimental Study on the Combustion and Emission Characteristics of the Early Injection in a Gasoline Direct Injection Engine Using Controlled Auto Ignition Combustion Method
- Other Titles
- An Experimental Study on the Combustion and Emission Characteristics of the Early Injection in a Gasoline Direct Injection Engine Using Controlled Auto Ignition Combustion Method
- Issue Date
- May-2006
- Publisher
- 대한기계학회
- Keywords
- Key Words : CAI(Controlled Auto Ignition; 자기착화 조절); Residual EGR(잔류배기가스); NVO (Negative Valve Overlap; 네거티브 밸브 오버랩); Early Injection(조기분사)
- Citation
- 대한기계학회논문집 B, v.30, no.5, pp.457 - 464
- Indexed
- KCI
- Journal Title
- 대한기계학회논문집 B
- Volume
- 30
- Number
- 5
- Start Page
- 457
- End Page
- 464
- ISSN
- 1226-4881
- Abstract
- Controlled auto ignition (CAI) combustion, also known as HCCI (homogeneous charge compression ignition), offers the potential to simultaneously improve fuel economy and reduce emission. CAI-combustion was achieved in a single cylinder gasoline DI engine, with a cylinder running in a CAI mode. Standard components were used the camshafts which had been modified in order to restrict the gas exchange process. The effects of air-fuel ratio, residual EGR rate and injection timing such as early injection and late injection on the attainable CAI combustion region were investigated. The effect that injection timings on factor such as start of combustion, combustion duration and heat release rate was also investigated. From results early injection caused the mixture to ignite earlier and burn more quickly due to the exothermic reaction during the recompression and gave rise to good mixing of the fuel-air.
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Related Researcher
- LEE, KI HYUNG
- ERICA 공학대학 (DEPARTMENT OF MECHANICAL ENGINEERING)