Publications


Title전지연, 배충식, “수소 압축착화엔진에서 DME 분사의 영향; The Effect of DME injectio in the Hydrogen Compression Ignition Engine”, 제 45회 KOSCO Symposum, 2012. 11.

전지연, 배충식, “수소 압축착화엔진에서 DME 분사의 영향; The Effect of DME injectio in the Hydrogen Compression Ignition Engine”, 제 45회 KOSCO Symposum, 2012. 11.

Abstract

The hydrogen co mbustion with dimethyl-ether (DM E) as an ignition promoter  was investigated in a single cylinder  engine using  compression igniti on engine. The  hydrogen was injected at intake manifold to make homogeneous charge, and the DME was injected direct ly into the cylinder  with common-rail system as an ignit er. The hydrogen and DME inject ion quantity an d DME  injection timing were varied corresponding to the fixed total  lower heating value. The injection timing of DME was varied from 35 crank angle degrees before the top dead center to the top dead center. indicated mean effective pressure, ignition delay, and emissions were tested under the same load condition. As DME injection timing was advanced, combustion temperature was lowered, and the emissions of carbon monoxide and hydrocarbon were increased by formation of lean premixed charge. When DME was injected near 10 crank angle degrees before top dead center, carbon monoxide and hydrocarbon emissions were minimum and the nitric oxides emission was maximum due to high pressure and heat release rate. If the injection timing of DME was retarded near to the top dead center, indicated mean effective pressure was increased due to partially rich region. DME early inject ion before the 40 crank angle degrees before the top dead cent er made unstable combustion due to excessive lean DME mixture. Misfire was occurred when DME was injected after the top dead center.

Previous200. 박영수, 배충식, “이단 후분사의 적용을 통한 디젤 PCCI연소의 HC 저감에 관한 연구”, 제 45회 KOSCO Symposum, 2012. 11.
Next김기현, 김동훈, 정용진, 배충식, “가솔린과 디젤을 연료로 적용한 압축착화식 엔진에서 분사기가 연소 및 배기배출물에 미치는 영향”, 제 45회 KOSCO Symposium, 2012. 11.
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