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예연소실식 디젤엔진의 분구 형상 변화에 따른 연소 특성 연구
최종휘,이승필,박성욱,Choi, Jonghui,Lee, Seungpil,Park, Sungwook 한국액체미립화학회 2017 한국액체미립화학회지 Vol.22 No.3
Pre-combustion chamber type indirect diesel engines have different combustion characteristics compared with those of common rail direct injection engine. The CONVERGE, specific engine CFD program, was used to simulate hollow cone spray model and combustion. The air-fuel mixture flow propagating from pre-combustion chamber to cylinder was concentrated at top half and center of the pre-combustion chamber throat. Stronger mixture flow was formed at smaller and longer throat cases. As a result, thermal efficiency and fuel consumption were improved for modified throat shape and the soot emission was also reduced.