함산소 물질이 혼합된 디젤연료의 분무특성 = Spray Characteristics of Diesel Fuel with Oxygenates

다국어 초록 (Multilingual Abstract)

The Effect of four diesel with oxygenated agents fuels on spray properties from plain-onfice atomizer was investigated. The oxygenates evaluated were diglyme, MTBE, DMM and were blended in weights of 5, 10, 15, 20 and 30% in a baseline diesel fuel. The physical properties such as surface tension, density and viscosity are also measured for each blended oxygenated fuels. It was found that in physical properties of fuels considered are enough to influence spray properties, i.e. spray angle, spray tip penetration and mean drop size. Spray properties were measured by PMAS(particle motion analysis system) which is employing a point measurement technology. Spray angle increased with increase in oxygenate content. The effect, however, was not great in the higher blend level. The oxygenated fuels produced more shorter spray tip penetration than diesel fuels. SMD was decreased with the increase in blending percent. SMD for DMM and DEE are represented 10.33 and 3.41% decreasing rates respectively. It found that changes in spray characteristics of oxygenated fuel were easily large enough to impact pollutant emissions. It was clear fern this study fat spray characteristics of oxygenated fuel is one of possible cause of reducing pollutant emissions form diesel engines when oxygenated fuels is applied.