| 제목 |
직접분사식 가솔린 엔진을 이용한 CAI 연소특성 및 운전영역 확대를 위한 성층 연소 특성에 관한 연구 |
| 분야 |
엔진 및 연소 |
| 언어 |
Korean |
| 저자 |
이창희(한양대학교), 이기형(한양대학교), 최영종(한양대학교), 임경빈(한밭대학교) |
| Key Words |
CAI(Controlled Auto ignition,가솔린 자착화,) HCCI(Homogeneous charge Compression Ignition, 예혼합 압축 착화) NVO(Negative Valve Overlap ) EVC(Exhaust Valve Close, 배기밸브 닫힘) IVC(Intake Valve Close,흡기 밸브 닫힘) EGR(Exhaust G |
| 초록 |
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. |
| 원문(PDF) |
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