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[연료 및 윤활유부문] Demethyl ether와 디젤의 분무 특성 비교
유준(J.Yu),강진석(J.S. Kang),공장식(J.S. Kong),배충식(C. Bae) 한국자동차공학회 2001 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2001 No.11_1
Demethyl ether (DME) is one of the most attractive attremative fuels for compression ignition engine. Its main advantage in diesel engine application is high efficiency of diesel cycle with soot free combustion though conventional fuel injection system has 10 be modified due 10 the intrinsic properties of DME. Experimental study of DME and conventional diesel spray employing a conventional fuel injection system with a yea (Valve Covered Orifice) injector was performed al atmospheric conditions. A CCD camera was employed 10 capture time series of spray images followed by spray angles and penetrations of DME were characterised and compared \\ith those of diesel. Increasing rate of the DME injection pressure was lower than that of diesel and residual pressure was higher due 10 high compressibility of DME. Spray angles of DME were generally wider than those of diesel while spray tip penetrations were shorter due 10 higher vapour pressure and faster momentum loss.