There are many reasons for the failure of marine diesel engines. Caused by improper design structure and material selection, but also caused by poor manufacturing, assembly and debugging quality, but also caused by improper operation and poor maintenance. Here, the main causes of failures in operation, maintenance, and manufacturing are briefly introduced.

1. Reasons for operation:

Due to the failure of the ship's diesel engine caused by illegal operation, it accounts for a large proportion of the ship's diesel engine failure. There are ideological negligence, technical unfamiliarity, and wrong habits.

Common violations have the following aspects:

(1) The starting time is too long.

(2) The cold start starts quickly and increases the load without passing through the warm car.

(3) If the running-in is insufficient, it will run at high load.

(4) Emergency stop with load.

(5) The oil level is insufficient to drive.

(6) The water surface is not enough to drive.

(7) Overload or overspeed operation.

(8) The water temperature and oil temperature are abnormal and continue to operate.

(9) Emergency stop during high speed and high load operation.