The fact that the air supply of a Diesel engine is compressed and its temperature raised to such a high degree permits the use of liquid fuels with a high ignition temperature.
"The First Airplane Diesel Engine: Packard Model DR-980 of 1928"
Robert B. Meyer
These new fuels reduced the diesel's advantage resulting from low fuel consumption, and, in addition, gave the gasoline engine a definite advantage from the standpoint of performance.
"The First Airplane Diesel Engine: Packard Model DR-980 of 1928"
Robert B. Meyer
Concerning that particular function of mobility which is called coal endurance,-that is, the ability to steam a certain distance without stopping to recoal,-the convenience to military operations of such a quality is evident; but it is obvious that it cannot, with the fuels now available, be possessed beyond very narrow limits.
"Lessons of the war with Spain and other articles"
Alfred T. Mahan