It is a high-speed machine rated at a rated speed of more than 1000 rpm, and a low-speed machine rated at 300-1000 for a medium-speed machine rated below 300. It can also be divided according to the average speed of the piston. The high speed machine is 9.0~14.2 meters per second, the medium speed machine is 7.0~9.4 meters per second, and the low speed machine is 6.0~7.2 meters per second.

Diesel engines are rated at high speeds, rated at 1000 rpm or higher for high speed machines, and rated at 300-1000 for medium speed machines rated below 300 are low speed machines. It can also be divided according to the average speed of the piston. The high speed machine is 9.0~14.2 meters per second, the medium speed machine is 7.0~9.4 meters per second, and the low speed machine is 6.0~7.2 meters per second.

Introduction: Diesel engines are engines that burn diesel to obtain energy release. It was invented in 1892 by the German inventor Rudolf Diesel. To commemorate the inventor, diesel is represented by his surname Diesel, and the diesel engine is also called the Diesel engine. Diesel engine). The advantages of diesel engines are high torque and good economic performance. The working process of a diesel engine has many similarities with that of a gasoline engine. Each working cycle also undergoes four strokes of intake, compression, work, and exhaust. However, since the fuel for diesel engines is diesel, its viscosity is larger than that of gasoline, it is not easy to evaporate, and its auto-ignition temperature is lower than that of gasoline. Therefore, the formation and ignition method of combustible mixture is different from that of gasoline engines.