Fuel Delivery and Air Induction: Description and Operation

Fuel Supply System:

TYPE

The fuel delivery system is a Multi-Point Injection (MPI) type.


PURPOSE

Supplies engine with correct amount of fuel at correct pressure.


CONSTRUCTION

Fuel Delivery system consists of a fuel tank, fuel pump, fuel filter, fuel pressure regulator, fuel rail, six fuel injectors and associated lines.


OPERATION

Fuel is pumped from the fuel tank to the fuel injectors through the fuel filter, fuel rail and the pressure regulator, by the electric in-tank fuel pump.

Vacuum assisted regulator maintains pressure at injectors by allowing excess fuel to return to tank via return line.

The SBEC controls the amount of fuel injected by controlling the length of injector "on time", this period of time is known as "injector pulse width".

The injectors are fired in pairs, with each injector firing once per stroke.