Analysis of Marine Diesel Engine Parts Suddenly Stopping of Marine Diesel Engine

1. Trouble phenomenon When a sudden stop occurs, there are two situations. One is to stop running suddenly, and the other is to slow down the speed and then stop running.

2. Reason analysis

⑴ Fuel system: the fuel in the fuel tank is used up; there is water and air in the fuel; the fuel system is blocked; the fuel line is ruptured; the plunger of the fuel injection pump or the fuel outlet valve is stuck; the needle valve of the fuel injection nozzle is stuck; the governor spring is broken , The rack automatically returns to the stop position.

⑵Air distribution system: the valve is stuck or the valve spring is broken and the air cannot be ventilated normally; the gear is damaged or the fuel injection timing is wrong; the fuel injection pump transmission device is damaged.

⑶ Moving parts failure: the ship diesel engine pulls and holds the cylinder; the ship diesel engine burns the bushes and holds the shaft.

⑷Safety protection system: low oil pressure automatic parking device works; overspeed automatic parking device works; explosion-proof door automatically closes.

⑸ Other factors: the sudden increase of external load will suffocate the marine diesel engine.