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횡방향 유속 변화에 따른 고압 가솔린 스월 인젝터의 분무특성
최재준(Jaejoon Choi),이용석(Youngseok Lee),최동석(Dong-Seok Choi),배충식(Choongsik Bae) 한국자동차공학회 2003 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The direct injection into the cylinders has been regarded as a way of the reduction in fuel consumption and pollutant emissions. The spray produced from the injector of DISI(Direct Injection Spark Ignition) engine is of paramount importance in DISI engines The interactio<br/> between air flow and fuel spray was investigated in a steady flow system embodied in a wind tunnel to simulate the variety of flow inside the cylinder of the GDI engine. The direct Mie scattered images presented the macroscopic view of the liquid spray fields interacted wit<br/> crossflow. Particle sizes of fuel droplets were investigated by Phase Doppler Anemometer(PDA) system. Faster crossflow field made SMD larger and D 10 smaller. The processes of atomizatio and evaporation with a GDI injector were observed and consequently utilized to construct the data-base for the spray and fuel-air mixing mechanism as a function of the flow characteristics.<br/>
횡방향 유속 변화에 따른 고압 가솔린 팬형 인젝터의 분무특성
최재준(Jaejoon Choi),이용석(Youngseok Lee),배충식(Choongsik Bae) 한국자동차공학회 2003 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The direct injection into the cylinders has been regarded as a way of the reduction in fuel consumption and pollutant emissions. The spray produced from the injector of DISI(Direct Injection Spark Ignition) engine is of paramount importance in DISI engines. Fan-spray injector as well as swirl-spray injector was developed and utilized to the DISI engines. The interaction between air flow and fuel spray was investigated in a steady flow system embodied in a wind tunnel to simulate the variety of flow inside the cylinder of the DISI engine. The direct Mie scattered images presented the macroscopic view of the liquid spray fields interacted with crossflow. The experiments show the interaction of air flow field and the fuel spray field of fan-spray. The influence of the variation of injection pressure was surveyed, as well. The results can be utilized to construct the data-base for the spray and fuel-air mixing mechanism as a function of the flow characteristics.