직접분사식 디젤기관의 단공 연료 인젝터의 미립화 특성에 관한 실험적 연구

Abstract

The work describes the spray characteristics of single hole injector in the direct injection type diesel engine. The characteristics of fuel spray such as droplet size and velocity were measured by phase Doppler particle analyzer. The influence of injection pressure on the droplet size shows that the higher injection pressure results in the decrease of mean droplet diameter. The minimum droplet size of fuel spray appears on the location of 40mm axial distance from nozzle tip of fuel injector. The correlation between the droplet size and axial velocity of the fuel spray due to the change of axial and radial distance were discussed..