Diesel engines are internal combustion engines fueled by diesel fuel. Diesel engines are compressed ignition engines, and they are often referred to as Diesel engines after the main inventor, Diesel. Diesel engine in the work, inhalation of air in the diesel engine cylinder, because of the movement of the piston by a high degree of compression, up to 500 to 700 degrees C high temperature. The fuel is then sprayed in a mist into the hot air, mixed with the high temperature air to form a combustible mixture, automatically burning. The energy released during combustion acts on the top surface of the piston, pushing the piston and converting it into rotating mechanical work through the linkage and crankshaft.