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가솔린 기관의 에탄올혼합연료의 배출가스 특성에 관한 연구
조행묵(Haengmuk Cho),이창식(Chang Sik Lee) 한국자동차공학회 2003 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In this paper, the effects of ethanol blended gasoline on emissions and their catalytic conversion efficiencies characteristics were investigated in a electronic fuel injection gasoline engine. The results showed that the increase of ethanol concentration in the blended fuels brings about the reduction of THC and CO₂ emissions from the gasoline engine were improved. THC emissions were drastically reduced by up to thirty percent. And brake specific fuel consumption was increased, but brake specific energy consumption could be improved. However, unburned ethanol and acetaldehyde emissions increased. The conversion efficiency of pt/Rh based three-way catalysts and the the effect of ethanol on CO and NOx emissions were investigated by the change of engine's speed, load and air/fuel ratio. Furthermore, the effect of ethanol blended fuel on the reduction of THC, CO and NOx emissions at idle speed.<br/>
SI 엔진의 메탄올 혼합 연료의 연소 및 배출 가스 특성에 관한 연구
조행묵(Haengmuk Cho),王建昕(Jianxin Wang),이창식(Chang Sik Lee) 한국자동차공학회 2003 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The engine performance and combustion characteristics of methanol blended fuel in a multiple-point electronic control<br/> gasoline engine were discussed on the basis of experimental investigation. The effects of methanol blending fuel on combustion in cylinder were investigated under various conditions of engine cycle and blending ratio. The results showed that the engine performance was influenced by the methanol blended ratio. The results showed that the engine performance was influenced by the methanol blending ratio and the variations of operating conditions of test engine. The increase of blended fuel brought on the improvement of combustion characteristics such as cylinder pressure in the engine. The effect of methanol blended fuel on the fuel consumption rate and characteristics of exhaust emissions were discussed.