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자료유형
학술대회자료
저자정보
저널정보
한국자동차공학회 한국자동차공학회 춘 추계 학술대회 논문집 한국자동차공학회 2003년 춘계학술대회논문집 1호
발행연도
2003.5
수록면
419 - 424 (6page)

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The liquid phase LPG injection (LPLI) system (the third generation technology) has been considered as one of the next generation fuel supply systems for LPG vehicles, since it has a very strong potential to accomplish the higher power, higher efficiency, and lower emission characteristics than the mixer type(the second generation technology) fuel supply system. However, when a liquid LPG fuel is injected into the inlet duct of an engine, a large quantity of heat is extracted due to evaporation of fuel. This leads to freezing of the moisture in the air around the outlet of a nozzle, which is called icing phenomenon It may cause damage to the outlet nozzle of an injector or inlet valve seat. In this work, the experimental investigation of the icing phenomenon was carried out. The results showed that the icing phenomenon and process were mainly affected by humidity of inlet air instead of air temperature in the inlet duct. Also, it was observed that the total ice formed around the nozzle weighs at about l50mg-260mg after injection for ten minutes. And some fuel species were found in the ice attached at the front side of a nozzle, while frozen ice attached at the back of a nozzle was mostly consisted of moisture of inlet air. Therefore, some frozen ice deposit, detached from front nozzle of an injector, may cause a problem of unfavorable air fuel ratio control in the small LPLI engine.

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ABSTRACT

1.서론

2.실험장치 및 방법

3.결과 및 고찰

4.결론

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