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인젝터 노즐 변경과 VGT 적용이 Common Rail HSDI 디젤 엔진의 부분 부하 성능에 미치는 영향
권욱(Wook Kwon),김형욱(Hyunguk Kim),조성태(Sungtae Cho),김철수(Chulsoo Kim),조성우(Sungwoo Cho),민경덕(Kyoungdoug Min) 한국자동차공학회 2003 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Recently, common rail HSDI diesel engines are expanding their applications backed by the technological innovations in air charging and high pressure fuel injection systems. VGT and common rail fuel injection systems which expand the flexibility of engine operation have become the main keyword of latest HSDI technology. In this paper the effects of using VGT and small hole injectors on emissions and fuel economy were discussed. The effects of engine operation parameters such as boost pressure. EGR fate, injection timing, injection pressure on the part load emissions and fuel economy were investigated. As a result, improvement of bsfc and NOx and noticeable large improvement of PM was possible.<br/>