Fuel Charging and Controls

Fuel Charging and Controls

The fuel charging and control system consists of the:

- Throttle Body (TB).
- fuel rail.
- fuel injectors.
- Fuel Pump Driver Module (FPDM).

The fuel charging and controls system is:

- a Sequential Multi-Port Fuel Injection (SFI).
- pulse-width modulated.
- Mass Air Flow (MAF) controlled.
- fuel rail pressure and temperature sensor.


Throttle Body (TB)

The TB:

- controls air supply to the intake manifold by electronically positioning the throttle plate.
- is not adjustable.


Fuel Injectors

The fuel injectors:

- are electrically operated by the PCM.
- atomize the fuel as the fuel is delivered.
- are deposit-resistant and self-cleaning.
- each have an internal solenoid which opens a needle valve to inject fuel into the lower intake manifold.


Fuel Rail

The fuel rail:

- delivers fuel to the individual fuel injectors.
- receives fuel from the fuel supply tube.


Fuel Rail Pressure and Temperature Sensor

The fuel rail pressure and temperature sensor:

- supplies the PCM with signals indicating fuel pressure and fuel temperature.


Fuel Pump Driver Module (FPDM)

The FPDM:

- is electronically operated by the PCM.
- controls voltage to the Fuel Pump (FP) module.