The experimental study of post injection effect on exhaust gas temperature and composition in a common rail DI diesel engine

커먼레일 디젤엔진에서 후분사 변화가 배출가스 성분 및 온도 변화에 미치는 영향에 대한 실험적 연구

The post injection effect to enhance aftertreatment devices' performance is essential to meet future stringent emission standards by controlling exhaust gas temperature and emission pollutants. The test has been made with commercial common rail diesel engine by post injection manipulation, to optimize exhaust gas temperature while guarantee low fuel penalty. The optimization was done at 1500, 2000 and 2500[rpm] for 2, 4[bar] condition which show low exhaust gas temperature. The main purpose of this test is dedicated to understand mechanism of exhaust gas temperature rise while optimizing