1974 年 53 巻 11 号 p. 907-914
Intermitted combustion type of engines such as spark ignition-engines, compression ignition engines and rotary engines, will be mainly used at least during this century for automobile use.
Petrol series of modified fuels will be also used. But some alcohol series fuels may be become to be used, and even in the so called hydrogen fuel age, they might be used for automobile use.