PRE SUPPLY PUMP The electric fuel pump comprises of: 1.Electric Motor 2.Roller-Cell Pump 3.Non Return Valve When the electric fuel pump is switched off, the supply of fuel is interrupted and the engine stops.An electric fuel pump is used for this purpose in the CRFIS.Transports fuel from the fuel tank to the high pressure pump.
The ECU calculates injected fuel quantity, start of injection, duration of injection, and rate of discharge curve, as well supervises the correct functioning of the injection system as a whole.ĬOMMON RAIL FUEL INJECTION SYSTEMDESIGN PRE SUPPLY PUMP The Common Rail Sub functions ECU and sensors The sensor are responsible for measuring important physical quantities. The Common Rail Sub functions The common rail ECU evaluates the signals from the following sensors: Boost – pressure sensor, Air temperature sensor, Air – mass meter, and Rail pressure sensor. Crankshaft – speed sensor, Camshaft sensor, Accelerator-pedal travel sensor The Common Rail Sub functions ECU and sensors The common rail ECU evaluates the signals from the following sensors. The high – pressure circuit It is the responsibility of the high pressure circuit to generate a constant unvarying high pressure in the high pressure accumulator (the rail) and to inject the fuel through the injectors into the engine’s combustion chambers.
Inject precisely correct amount of fuel at exactly the right moment in time.Generate the high pressure needed for fuel injection and distribute the fuel to the individual cylinders.COMMON RAIL FUEL INJECTION SYSTEM JL" L\U V ,[XG G\AZ : 15ĭemand On Modern Diesel Engine Development Ĭommon rail fuel injection system and its function
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