Engines diesel engine

Another competitor for fuel cell vehicles could be the diesel engine. Diesel engines are used in large trucks and construction equipment for their high efficiency and durability. 

These energy efficiencies are better than those of the best thermal engines (diesel engines), which have energy efficiency of the order of 0.40. 

An obvious method of controlling the capacity of a compressor is to vary the speed. This method is applicable to units driven by variable-speed drivers such as steam pistons, steam turbines, gas engines, diesel engines, etc. In these cases the regulator actuates the steam-admission or fuel-admission valve on the compressor driver and thus controls the speed. 

The word fuel indicates both the engine fuels used in spark-ignition engines, diesel engines, turbines and turboreactors, the ergols used in launchers, or heating fuels destined for the production of heat in furnaces and boilers. 

Standard Practices for Law and Medium Speed Stationary Diesel and Gas Engines, Diesel Engine Manufacturers Assodation, Cleveland, Ohio, 1972. 

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