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김한재(Han-jae Kim),류경훈(Kyeong-hun Ryu),최동석(Dong-seok Choi),김덕줄(Duck-jool Kim) 한국자동차공학회 2000 한국자동차공학회 지부 학술대회 논문집 Vol.- No.-
Behaviors of GDI spray for flow and non-flow field were studied using LIEF and PDPA system. Injector has cone spray angle and spray has hollow cone structure. The exciplex system of fluorobenzene and DEMA in a non-fluorescing base fuel of hexane was employed. Droplet size and velocity were also measured by PDPA. From spray images ,sprays could be divided as two regions: cone and mixing region. Large droplets over 40㎛ were distributed outside spray main stream and many fine droplets were distributed inside the spray and vortex region. In engine spray has smaller penetration than chamber while dispersions were almost same at both cases. At mixing region, area ratios of high intensity region in engine were larger and increased rapidly after about 1.0ms after injection.<br/>