정적연소기내에서의 분위기 온도 및 압력에 따른 혼합기 분포에 관한 성층화 정도 특성

Abstract

It is well known that a lean bum engine caused by stratified mixture formation has many kinds of advantages to combustion characteristics, such as higher thermal efficiency and lower CO, NOx levels than conventional homogeneous mixture combustion. Although this combustion can achieve low fuel consumption technology, It produces much unburned hydrocarbon and soot because of heterogeneous equivalence ratio in the combustion chamber Therefore, the stratified mixture formation technology is very important to obtain the stable lean combustion In this paper, fundamental studies for stratified combustion were earned out using a constant volume combustion chamber The local effect of mixture formation according to control air-fuel distribution in the chamber was examined experimentally In addition, the effect of turbulence on stratified charge combustion process was observed by schlieren photography. From this study, we found that the flame propagation speed Increase With swirl flow and the swirl promotes the formation of fuel and au mixture