A Study on the Atomization and Fuel Film Characteristics of Air Shrouded Injectors

Abstract

The EGI system has a severe problem in that heavy HC emission is generated due to large fuel droplet and fuel film attachment. Therefore, for the purpose of reducing HC emission, various atomization techniques are being developed. One of those techniques is the air shrouded injector, which has a better atomization ability and demands less power loss than other atomizers. In this study, the atomization and fuel film characteristics of an air shrouded injector were analyzed by using a particle size measurement system and a fuel film measurement device. From these experiments, design factors were established to develop air shrouded injectors.