Turbocharger - Overview: Overview

The turbocharger is an exhaust-driven variable geometry turbocharger, the turbocharger is a single-stage variable geometry turbocharger. Its purpose is to increase power output by supplying compressed air to the engine. The internal components are cooled by engine oil, engine coolant and air. Engine oil is circulated through the center housing which acts as a heat barrier between the "hot" turbine and the "cold" compressor. Bearings are sleeve type and lubricated by engine oil. Oil is pumped directly from the cylinder block, through the turbocharger pedestal to the turbocharger, then circulated through the turbocharger housing and returned to the oil pan through the oil drain in the turbocharger pedestal. Coolant from the engine block, flows through the turbocharger pedestal, then flows through the turbocharger housing and out through the turbocharger coolant return tube to the coolant crossover manifold.

Expanding exhaust gases drive the turbine shaft assembly at speeds of over 100, 000 rpm. Filtered air entering the compressor side of the turbocharger is compressed and delivered through a CAC (charge air cooler). The very hot compressed air is cooled by the CAC (charge air cooler) and then continues on to fill the intake manifold at a higher pressure than atmospheric pressure. Because considerably more air is forced into the intake manifold, the results are increased power, fuel efficiency and the ability to maintain power at higher altitudes.