Engine Performance: System: Turbocharger: Description
The turbocharger is a blow-through type system, fuel is introduced downstream of the compressor. This is an "on-demand" system that boosts engine output at high-load/high-speed conditions.
The turbocharger is equipped with a charge air cooler (intercooler) mounted between the turbocharger and the throttle body. The charge air cooler cools air flowing out of the turbocharger. This cooling, along with turbo boost, improves combustion efficiency and engine horsepower.
The turbocharger boost control system provides electronic variable boost control. The boost control provides regulation of the wastegate actuator signal allowing variable turbo boost pressures. The boost control system includes a control module, solenoid/hose assembly, calibrated "T" fitting and are all controlled by the EEC module. The boost control system is equipped with a fuel selector switch.
The 5 major components of the turbocharger are the compressor, turbine, wastegate actuator, wastegate, and a water-cooled center housing. See Figure .