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가솔린-알코올 혼합연료의 연소 및 배기특성에 관한 연구
정영식(Y.S.Jeong),최동천(D.C.Choi),조원진(W.J.Jo),정성찬(S.C.Chung),채재우(J.O.Chae) 한국자동차공학회 1994 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1994 No.11_1
Because alcohol or ether contains oxygen and has ability improve octane number compared with gasoline, it is used as a clean fuel for low emissions and performance improvement. But it is necessary to adjust fuel supply system and operating conditions due to low heating value, high latent heat of vaporization of fuel. Therefore, this experiment is conducted to investigate for studying the effects of equivalence ratio and spark timing on intake mixture temperature, MBT, torque, brake specific fuel consumption, brake thermal efficiency as a basic performance, and conbustion pressure and combustion duration for combustion analysis. And with measurement of emissions like NOX, CO and HC, low emission characteristics and operating conditions for performance improvement with gasoline-alcohol blends are also considered.<br/>
A NEW METHOD OF INNER-CYLINDER DIAGNOSTIC
채재우(J. O. Chae),최동천(D. C. Choi),문승일(S. L. Moon) 한국자동차공학회 1995 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1995 No.6_1
As a part of further investigations of possibilities to use a spark-plug as a sensor indicating processes taking place in the cylinder of an internal combustion engine we carried out the experimental study of a misfire detection. A new phenomenon -'effect of modulation of breakdown voltage' - was observed. This phenomenon lets us to have a new view on the inner-cylinder processes.<br/>