In this study, evaporative characteristics of emulsified fuel consisting of diesel and H202 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 H202 in emulsified fuel was set as emulsified fuel (EF)O, 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
EFO~EF22 by using a constant volume chamber maintained at 150 °C, satisfying condition of evaporation. The
results showed that a higher increase in the mixing ratio of H202 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.