좁은 분사각을 갖는 인젝터를 이용한 예혼합 압축착화 엔진의 분사조건에 따른 분무 및 연소특성에 관한 연구

Abstract

As the exhaustion of petroleum resources and air pollution problems are getting serious recently, there are growing interestsin premixed diesel engines which have the potential of achieving a more homogeneous mixture near TDC compared to con-ventional diesel engines. Early studies have shown that the fuel injection frequency and spray angle affected the mixture for-mation and combustion in a HCCI (Homogeneous Charge Compression Ignition) engine. Therefore, the purpose of this studyis to investigate the relationship between combustion and mixture formations by injection timing and frequency using a nar-row angle injector, NADI (Narow Angle Direct Injection). In this study, we found that the fuel injection timing and injectionfrequency afect the mixture formations and then affect combustion in the HCCI engine.1.