With reference to a main engine fuel system of the high pressure common rail type: (a) Sketch a common rail fuel injection system from booster pump inlet to cylinder head fuel valves, labeling the MAIN components (8) (b) Explain how the fuel pumps are operated and the common rail pressure is maintained (4) (c) Explain how fuel injection timing and quality is regulated for the common rail fuel system sketched in part (a) (4)
Electronic engine & common rail
UKM Tuticorin 
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