Fuel Charging and Controls

FUEL CHARGING AND CONTROLS

The fuel charging and control system consists of the:
- electronic throttle body
- fuel injectors
- fuel charging wiring
- fuel injection supply manifold
- fuel pulse damper
- fuel pressure and temperature sensor

The fuel charging and controls system is:
- a sequential, multiport fuel injection (SFI) system.
- pulse-width modulated.
- mass air flow (MAF) controlled.

The fuel injection supply manifold:
- delivers fuel to the individual fuel injectors.
- receives fuel from the fuel supply line.

The electronic throttle body:
- controls air supply to the intake manifold by positioning electronically the throttle plate.
- is not adjustable
- must not be cleaned
- is serviced as a complete assembly only.

The fuel injectors:
- are electrically operated by the powertrain control module (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.

The fuel pulse damper:
- reduces fluctuation of the fuel pressure during injector operation.