17권 4호 32-39 2009 [한국자동차공학회 논문집 ]
| 제목 | Multi Zone Modeling을 이용한 온도 성층화의 효과를 갖는 예혼합압축자기착화엔진의 압력상승률 저감에 대한 모사 |
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| 분야 | 엔진 및 연소 |
| 언어 | Korean |
| 저자 | 권오석(울산대학교), 임옥택(울산대학교) |
| Key Words | HCCI(예혼합압축자기착화), Pressure-rise rate(압력상승률), Knocking(노킹), IMEP(평균유효압력),Ringing Intensity(노킹강도), Thermal stratification(온도 성층화), DME(디메틸에테르), Multi-zone model(온도 성층화모델) |
| 초록 | The HCCI engine is a next generation engine, with high efficiency and low emissions. The engine may be an alternative to SI and DI engines; however, HCCI`s operating range is limited by an excessive rate of pressure rise during combustion and the resulting engine knock in high-load. The purpose of this study was to gain a understanding of the effect of only initial temperature and thermal stratification for reducing the pressure-rise rate in HCCI combustion. And we confirmed characteristics of combustion, knocking and emissions. The engine was fueled with Di-Methyl Ether. The computations were conducted using both a single-zone model and a multi-zone model by CHEMKIN and modified SENKIN. |
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