예혼합 압축착화 엔진용 연료분사 조건의 최적화에 관한 연구

Abstract

Recently, there has been an interest in premixed diesel engines as it has the potential of achieving a more homogeneous and leaner mixture formation compared to conventional diesel engines. Early studies revealed that in a HCCI(Homogeneous Charge Compression Ignition) engine, the fuel injection time and spray angle affects the mixture formation and combustion. Thus the purpose of this study was to investigate relationship of combustion and mixture formations according to injection timing and fuel supply system using a narrow angle injector called the NADI(Narrow Angle Direct Injection). From this study, we found that the fuel injection timing and injection times affect the mixture formations and in turn affects combustion in the HCCI engine.