The working principle of the diesel engine is: the compressed air generates high temperature and high pressure, causing the atomized diesel to explode and expand. The pressure directly acts on the piston, pushing the piston to perform high-speed linear reciprocating motion along the cylinder, and then passes through the crank connecting rod mechanism. The linear motion of the piston is converted into the rotational motion of the crank, thereby outputting mechanical work.
The working process of diesel engines is much the same as that of gasoline engines. Each working cycle also goes through the four strokes of intake, compression, power and exhaust. However, since the fuel used in diesel engines is diesel, its viscosity is higher than that of gasoline and is not easy to evaporate, and its self-ignition temperature is lower than that of gasoline. Therefore, the formation and ignition method of the combustible mixture are different from those of gasoline engines.
