디젤-에탄올 혼합연료의 다단 분사가 디젤 엔진 성능 및 배기물특성에 관한 연구

Abstract

This study is to investigate the effect of the multiple injections on the emission characteristics and engine performance of ethanol blended diesel fuel in a 4 cylinder light-duty diesel engine. In order to perform the influence of multiple injections and diesel-ethanol blended fuel in a passenger diesel engine, the injection strategy was controlled with pilot injection, double pilot injections, and one main injection at various experimental conditions. The experimental apparatus is consisted of DI diesel engine, EC dynamometer, multi-stage injection control system, and exhaust emissions analyzer. The results showed that diesel-ethanol blended fuel had longer ignition delay than those of diesel fuel. Also the effects of diesel-ethanol blended fuel on the exhaust emissions such as NOX and soot emissions were discussed under the various test conditions.