Marine Engine Systems Merchant Marine Training Centre.

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Presentation transcript:

Marine Engine Systems Merchant Marine Training Centre

What are the Marine Engine Systems? 1. Starting Air System 2. Fuel Oil System 3. Cooling Water System 4. Lubricating Oil System Merchant Marine Training Centre

Starting Air System Merchant Marine Training Centre

Usually, Two ‘air start’ compressors supply air to the ‘air receivers’. Air Receivers Merchant Marine Training Centre

Automatic Valve – Stops air going back to the air receivers The air distributor usually has many pilot valves, one for each cylinder. the distributor opens the air start valves . Automatic Valve – Stops air going back to the air receivers Merchant Marine Training Centre

The air start valve is located in the cylinder head The air start valve is located in the cylinder head. When it is opened by the distributor, compressed air goes into the cylinder and forces the piston down. Merchant Marine Training Centre

Merchant Marine Training Centre

Starting Air Valve Air distributor Merchant Marine Training Centre

Merchant Marine Training Centre

Merchant Marine Training Centre

Merchant Marine Training Centre

Fuel Oil System Merchant Marine Training Centre

Shut off non return valves Fuel Oil heater Burners Make-up water pump Fuel Oil header Fuel Oil filters Shut off valves Fuel Oil pumps Shut off non return valves Fuel Oil heater Burners Make-up water pump A) Fuel Oil header (Line) B)Fuel Oil filters C) Shut off valves D) Fuel Supply pumps E) Non return valves F) Fuel Oil heater G) Burners H) Make-up water pump Merchant Marine Training Centre

Merchant Marine Training Centre

Fuel Oil System process First, fuel oil comes from the fuel tank and passes through filters before it enters the supply pumps. From the supply pumps the fuel passes through more filters Fuel is pumped via a meter so that the quantity of fuel used can be observed Please note: Noun / Verb Merchant Marine Training Centre

Fuel Oil System process (cont.) Fuel then passes to a buffer tank where it mixes with fuel that has returned from the engine From the buffer tank fuel oil circulating pumps pump it to the heaters and to the engine The oil is heated and the temperature of the oil is controlled by a viscosity measuring device. Please note: Noun / Verb Merchant Marine Training Centre

Fuel Oil System process (cont.) After the heater and before finally going to the main engine inlet rail the fuel passes through more filters to ensure that there is no dirt which could damage the fuel pumps, injectors and cylinder liner. From the main engine inlet rail the fuel enters the fuel pump (one per cylinder). The fuel pump delivers the fuel to the fuel injector. If too much fuel is delivered to the fuel pump, the excess fuel is pumped back to the buffer. Please note: Noun / Verb Merchant Marine Training Centre

Merchant Marine Training Centre

The End Merchant Marine Training Centre