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Title장진영, 배충식, “DME 예혼합 압축착화 엔진에서 질소와 이산화탄소의 영향”, 한국자동차공학회 논문집, vol. 16, No. 5, pp171-178, 2008. 9.

장진영, 배충식, “DME 예혼합 압축착화 엔진에서 질소와 이산화탄소의 영향”, 한국자동차공학회 논문집, vol. 16, No. 5, pp171-178, 2008. 9.

Abstract

The combustion and exhaust emission characteristics were investigated in an DME fueled HCCI engine. Carbon dioxide, nitrogen and mixed gas, which was composed of carbon dioxide and nitrogen, were used as control parameters of combustion and exhaust emissions. As the oxygen concentration in induction air, which was occurred by carbon dioxide, nitrogen and mixed gas, was reduced, the start of auto-ignition was retarded and the burn duration was extended due to these fact, indicated mean effective pressure was increased and indicated combustion efficiency was decreased by carbon dioxide, nitrogen and mixed gas. In case of exhaust emissions, hydrocarbon and carbon monoxide was increased by reduction of oxygen concentration in induction air. Especially, partial burning was appeared at lower than about 18% of oxygen concentration by supplying carbon dioxide. However, it was overcome by intake air heating.

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