There are many different kinds of diesel engine:

1. According to the working cycle can be divided into a four-stroke and two-stroke diesel engine.

2. According to cooling methods can be divided into water-cooled and air-cooled diesel engine.

3. According to the air inlet can be divided into pressure and the pressurization naturally aspirated diesel engine.

4. Can be divided into the high speed of rotating speed (more than 1000 r/min), medium (300 ~ 1000 r/min) and low (less than 300 r/min) diesel engine.

5. According to the combustion chamber can be divided into direct injection type, swirl chamber type and precombustion chamber type diesel engine.

6. According to gas pressure methods can be divided into single acting, double-acting and opposed piston engine, etc.

7. According to the number of cylinder can be divided into single cylinder and multi-cylinder diesel engine.

8. The application can be divided into Marine diesel engine, locomotive diesel engine, automotive diesel engine with diesel engine, agricultural machinery, engineering machinery with a diesel engine, diesel engine, generator driven by diesel engine.

9. According to the oil supply mode can be divided into mechanical high pressure oil pump oil and high-pressure common rail electronic control injection fuel supply.

10. According to the cylinder arrangement can be divided into in-line and v-shaped arrangement, horizontally opposed arrangement, arrange W, star-shaped arrangement, etc.