[디젤엔진부문] 혼합연료를 이용한 예혼합 압축착화 디젤엔진의 연소특성

A diesel engine has various merits such as high thermal-efficiency, superior fuel consumption and durability. Therefore the number of diesel engine in the world is increasing. As the seriousness of environmental pollution increases in the world. the method to reduce the noxious materials of CO₂. NOx and P.M. is very important subject to correspond to exhaust gas regulations. A new concept, so called premixed charge compression ignition(PCCI), is focused among the various corresponding manners. In this study, we investigated the spray characteristics for mixed fuels of a gasoline and diesel and also compared combustion characteristics of PCCI engine using a mixed fuels with that of commercial diesel engine. Finally we grasped a emission characteristics of PCCI engine. From this experiment. it was observed that spray angle become to smaller and penetration length become to longer according to increase of gasoline contents. Also it could be found that NOx reduction is caused by the lower maximum temperature and soot reduction is caused by rapid combustion under diffusion combustion part.