1. The structure of a diesel engine consists of the crank-link mechanism, valve train mechanism, transmission mechanism, fuel supply system, lubrication system, cooling system, and pneumatic system (commonly known as three mechanisms and four systems).

2. During diesel engine operation, it is essential to pay full attention to the above parts and not neglect any component; otherwise, normal diesel engine operation cannot be guaranteed, which may cause severe diesel engine damage.

3. The working process of a diesel engine is the same as that of a gasoline engine. Each operating cycle also goes through four strokes: intake, compression, power, and exhaust.

4. To extend the service life of a diesel engine, maintenance of the air filter, lubricating oil filter, and fuel filter must be strengthened so that they can fully perform their functions.

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