軽油・水・メタノール混合燃料のディーゼル機関性能に及ぼす影響

In this paper, we give an account of the studies of gas oil-water-methanol stable emulsified fuel, and the influence of this fuel on pre-combustion type 4-cycle diesel engine performance. By selecting a suitable surfactant and exposing the emulsion to surpersonic waves, the authors succeeded in preparing a stabilized gas oil-water-methanol emulsion. By making use of this emulsified fuel, NOx concentration and smoke in the exhaust gas from the diesel engine were decreased. In the test range, the influence of the water in the emulsion on the engine performance was greater than that of methanol. Moreover, we investigated the influence of a change in the fuel injection timing.