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직접분사식 가솔린 엔진을 이용한 CAI 연소특성 및 운전영역확대를 위한 성층 연소 특성에 관한 연구A Study on the CAI Combustion Characteristics and Stratified Combustion toExtend the Operating Region Using Direct Injection Gasoline Engine
- Other Titles
- A Study on the CAI Combustion Characteristics and Stratified Combustion toExtend the Operating Region Using Direct Injection Gasoline Engine
- Issue Date
- Sep-2006
- Publisher
- 한국자동차공학회
- Keywords
- 가솔린 자착화; 예혼합 압축 착화; Negative Valve Overlap; 배기밸브 닫힘; 흡기 밸브 닫힘; 배기가스재순환; CAI; HCCI; NVO; EVC; IVC; EGR
- Citation
- 한국자동차공학회 논문집, v.14, no.5, pp.25 - 31
- Indexed
- KCI
- Journal Title
- 한국자동차공학회 논문집
- Volume
- 14
- Number
- 5
- Start Page
- 25
- End Page
- 31
- ISSN
- 1225-6382
- Abstract
- Controlled Auto Ignition(CAI) combustion has great potential in achieving significant increase in engine efficiency, while simultaneously reducing exhaust emissions. The process itself involves the auto ignition and subsequent simultaneous combustion of a premixed charge. In this study, NVO (Negative Valve Overlap) system was applied to a CAI engine in order to use residual gas. The fuel was injected directly to the cylinder under the high temperature condition resulting from heating the intake port to initiate CAI combustion. This paper introduced the valve timing strategy and experimental set-up. From this study, the effect of engine speed and valve timing on CAI combustion and exhaust emissions was clarified. In addition, stratified charge method was used to extend CAI operating region.
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Related Researcher
- LEE, KI HYUNG
- ERICA 공학대학 (DEPARTMENT OF MECHANICAL ENGINEERING)