지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2014.11
- 수록면
- 1,611 - 1,616 (6page)
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초록· 키워드
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An experiment was conducted to study the effects of valve events on the engine performance. A prototype gasoline direct injection engine was used to realize the independent control of four valve event parameters, namely intake valve opening (IVO), intake valve closing (IVC), exhaust valve opening (EVO), and exhaust valve closing (EVC). The EVO timing contributed to the optimization of the blowdown during the end of the exhaust stroke and the exhaust pumping work. The retardation of IVC timing allowed the engine to operate with wider throttle angle at fixed load condition, which reduced the pumping work significantly. The valve overlap was controlled with IVO and EVC. The pumping work decreased when the valve overlap position laid at the vicinity of top dead center (TDC) with sufficient valve overlap duration. The IVC and EVO played a dominant role in optimizing the fuel consumption characteristics compared to IVO and EVC. The IVC and EVO should be optimized in prior to the optimization of IVO and EVC.
목차
Abstract
1. 서론
2. 실험 장치
3. 실험 결과
4. 결론
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