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(부산대학교) (부산대학교) (부산대학교) (부산대학교) (부산대학교)
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한국자동차공학회 한국자동차공학회논문집 한국자동차공학회논문집 제22권 제1호
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    초록·키워드

    A numerical study has been carried out to analyze the combustion characteristics in heavy duty diesel engine with post injection for reducing NO emission. For verification of numerical study results, calculated cylinder pressure was matched to experimental data. In this study, post injection timing and amount of post injection were modified as parameters, but the total amount of injection fuel was maintained. As the results, maximum cylinder pressure increases above minimum 2% by post injection and end of pressure curve is decreased rapidly. The more dwell time and amount of post injection fuel are, the more pressure drop occurs. And trade-off relation of NO and soot are appeared. In the results, NO was reduced without deterioration of cylinder pressure under condition of 10° CA dwell time and main 60%, post 40% fuel portion.

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      UCI(KEPA) : I410-ECN-0101-2015-550-001059487