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[디젤엔진부문] 단일영역 열발생량 계산법을 사용한 소형 HSDI와 IDI엔진의 연소특성 비교에 관한 연구
이석영(Sukyoung Lee),김규보(Kyubo Kim),최승환(Seanghwan Choi),전광민(Kwangmin Chun),전충환(Chunghwan Jeon),장영준(Youngjune Chang) 한국자동차공학회 2001 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2001 No.11_1
Heat release analysis is a very important method in understanding the combustion phenomena inside an engine cylinder. In this study, one-zone heat release analysis was used with the measured cylinder pressures of a HSDI(high speed direct injection) and IDI(indirect injection) diesel engine. It has benefits of simple equation, fast speed, reliability. The object of the study is to compare the combustion characteristics between a HSDI and an IDI. Result of analysis, the maximum heat release rate of a HSDI is higher than an IDI because of long ignition delay period. The heat release curve of a IDI is more linear than an HSDI, so the combustion characteristics of a IDI is similiar to that of an SI engine. The combustion efficiency of a HSDI is higher than that of an IDI because of the smaller heat transfer loss of an HSDI.