Description And Operation
DESCRIPTION
The fuel supply system provides fuel at the correct operating pressure to the injector assembly.
The system consists of:
- A fuel pump/level gauge unit submerged in the tank
- A delivery pipe
- An injector rail
- A recirculation pipe
The electric pump unit consists of:
- Fuel pump
- Fuel filter
- Maximum pressure regulator
- Fuel level sensor
OPERATION
The fuel pump is controlled by the Engine Management Module through a special supply relay.
The fuel filter is fitted inside the pump unit and does not require maintenance.
A maximum pressure regulator is built into the pump unit between the pump and the supply pipe; this ensures fuel recirculation for safety reasons if the pressure exceeds 6.9 -9.8 bar (100 - 142 psi).
A fuel level sensor is also fitted in the pump unit; this is connected directly to the Body Computer Module.
The fuel supply pipe connects the tank with the injector-carrier rail; the pipe is connected through quick couplings.
The injector rail ensures the supply of fuel to the injectors and is made from metal for turbocharged versions:
- Inlet connector, connected to the delivery pipe
Approx. fuel pressure value:
- 4.0 bar (59 psi)