공기보조 미립화 인젝터의 입경 사이즈별 분무 구조에 관한 연구

Abstract

EGI system has severe problems of heavy HC emission generated by large fuel droplet and non-uniform air-fuel mixture. Therefore, various atomization techniques is being developed in order to reduce HC emission. The one among those techniques is air shrouded injector, which has better atomization ability and demand less power loss than other atomizers. Thus, the development of this air shrouded injector can be major topic to cope with international emission regulation. Nevertheless, there are few domestic and foreign studies which deal with air shrouded injector. In this study, the spray characteristics and atomization mechanism of representative air shrouded injector which was designed and manufactured was analyzed using PDPA system. And then, definite standards of air shrouded injector's spray characteristics were established.