1975 年 18 巻 118 号 p. 411-418
In Diesel engines, it is known that fuel injection and combustion characteristics when using lighter fuels such as gasoline are quite different from those when gas oil is used. However, various points remain unclarified as to the details of fuel injection and spray characteristics under the variety of fuels. The authors have attempted experimental studies on the effect of fuel properties on fuel injection and spray characteristics using gasoline alone. As a result, it was found that a vapour cavity formation phenomenon appeared in the pump barrel with a decrease of fuel feed pressure and fuel properties e.g. fuel viscosity, compressibility, acoustic velocity, etc. considerably influenced the injection quantity, injection timing, injection rate and spray characteristics. Especially, it was noted that these tendencies are notable in lighter fuel such as gasoline.
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