[가솔린엔진부문] 정적챔버내의 고압 가솔린 인젝터의 연료분무특성

This work presents an investigation of aerodynamic characteristics of cold fuel spray injected from a high pressure hollow cone swirl injector into a constant volume chamber. Laser tomography visualization was used to interrogate the fuel and air mixing characteristics and the effect of chamber pressure and temperature increase was analysed. Preliminary results on spray patternation showed that mixing effect tends to increase with the increase of chamber gas density yielding a decrease of spray penetration and a well defined vortex structure. For the present experimental conditions, fuel injection pressure and chamber gas pressure appear as the dominant factors. which govern the transient mixing characteristics.