| 제목 |
과급 직분사 FFV 엔진의 연료에 따른 혼합기 유동에 관한 해석적 연구 |
| 분야 |
연료 및 배기 |
| 언어 |
Korean |
| 저자 |
이태용(국민대학교), 조용석(국민대학교), 유준상(국민대학교), 최종근(국민대학교), 정한샘(국민대학교), 민병혁(현대자동차), 서주형(현대자동차) |
| Key Words |
TGDI engine(터보 가솔린 직분사 엔진), Injector(인젝터), Breakup length(분열길이), Spray angle(분무 각도), Flexible fuel vehicle(혼합 연료 차량) |
| 초록 |
The ongoing pursuit of reducing CO2 by using alternative fuels is a driving force in the production of flex fuel vehicles(FFVs) worldwide. In the case of gasoline direct injection (GDI) FFV engines, however, the mixture quality in the cylinder directly affects the combustion characteristics. In addition, engine performance significantly deteriorates due to the poor mixture quality. In this study, numerical analysis was performed on the vaporization of fuels in the cylinder with varying engine speeds and loads. The results of the numerical analysis showed that the vaporization rate of ethanol in the cylinder is lower than that of gasoline due to the differences in fuel properties. In the case of gasoline, the vaporization process is completed before the spark onset and there is no significant influence on the combustion characteristics. In the case of ethanol, it is considered possible for particulate matters to be produced massively due to incomplete vaporization under the conditions of increased loads and engine speeds. This result is intended to be utilized as a basic data for the fuel injection control strategy in the development of FFV engines. |
| 원문(PDF) |
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