Experimental Study of Evaporative Behavior Characteristics of Emulsified Fuel

In this study, evaporative characteristics of emulsified fuel consisting of diesel and H2O2 were studied. The surfactant for mixing emulsified fuel comprised of span 80 and tween 80 mixed as 9:1, and it was set at 3 of the total volume of emulsified fuel. Considering the mixing ratio of the surfactant, the mixing ratio of H2O2 in emulsified fuel was set as emulsified fuel (EF)0, EF2, EF12, EF22, EF32 and EF42. Evaporative characteristics were analyzed through experiments on droplets of emulsified fuel by using scattered light and the Schlieren system. Experimental free spray based on droplet experiment was conducted about EF0~EF22 by using a constant volume chamber maintained at 150℃, satisfying condition of evaporation. The results showed that a higher increase in the mixing ratio of H2O2 corresponded to a higher promotion of the evaporation of droplet and spray. From these results, when applying emulsified fuel to diesel engine, a faster mixture formation can be expected compared to that using diesel.