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Emission Characteristics of a Gasoline Engine Using Ethanol Blended Fuel  

조행묵 (천안공업대학 자동차과)
정동화 (순천제일대학 자동차기계과)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.28, no.3, 2004 , pp. 516-521 More about this Journal
Abstract
In this paper, the effects of ethanol blended gasoline on emissions and their catalytic conversion efficiencies characteristics were investigated in gasoline engine with an electronic fuel injection. The results showed that the increase of ethanol concentration in the blended fuels brought the reduction of THC and $CO_2$ emissions from the gasoline engine. THC emissions were drastically reduced up to thirty percent. And brake specific fuel consumption was increased. but brake specific energy consumption was similar level. However. unburned ethanol and acetaldehyde emissions increased. The conversion efficiency of Pt/Rh based three-way catalysts and the effect of ethanol on CO and NOx emissions were investigated by the change of engine speed. load and air/fuel ratio. Furthermore, the ethanol blended fuel results in the reduction effect of THC. CO and NOx emissions at idle speed.
Keywords
Gasoline engine; Ethanol blended fuel; Emission Characteristics; Catalytic converter;
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