MDE 9 Q10

B) To maintain the fuel temperature to prevent wax formation

Explanation: The fuel oil heater keeps the fuel at a temperature above its cloud point, preventing the formation of wax crystals that can clog the fuel system. Maintaining the correct fuel temperature ensures smooth fuel flow and proper engine operation.

B) Water Separator

Explanation: The water separator is designed to remove water from the fuel before it reaches the engine. Water contamination can cause engine problems, so the water separator ensures that only clean, water-free fuel is used.

B) To transfer fuel from the storage tank to the day tank or engine

Explanation: The fuel oil transfer pump is used to move fuel from the main storage tank to the day tank (or service tank) and then to the engine. It ensures a continuous supply of fuel to the engine and helps maintain the fuel system's efficiency.

C) Fuel Pressure Regulator

Explanation: The fuel pressure regulator is responsible for maintaining the correct pressure of the fuel as it enters the engine. It ensures that the fuel pressure remains constant, which is essential for proper engine performance and fuel atomization.

B) Pressure Relief Valve

Explanation: The pressure relief valve is a safety device that prevents overpressure conditions in the fuel system. It releases excess pressure to protect the system from damage and ensure safe operation.