Fuel Charging and Controls

Fuel Charging and Controls







The electronic returnless fuel system has the advantages of reduced fuel temperature and fuel tank vapour caused by constant fuel recirculation. The system delivers the correct amount of fuel to the engine under all conditions and at a constant pressure differential with respect to manifold absolute pressure.

Fuel is supplied at high pressure to the fuel injectors via a fuel injection supply manifold which incorporates fuel injectors, a fuel pressure regulator and a fuel temperature sensor. The powertrain control module (PCM) increases the fuel pressure to minimise fuel vapour formation to maintain fuel flow across the injectors.

The throttle body assembly is calibrated during assembly, no adjustments are required or permitted. The throttle motor is a 12 volt DC motor which via movement of the throttle blade controls the amount of air flowing into the engine.