Turbocharger (G1706853): Operation

The turbocharger is an exhaust-driven centrifugal air compressor which increases power output by supplying compressed air to the engine. The turbine wheel of the turbocharger uses the engine's exhaust gasses to drive the compressor wheel at speeds of up to 19,500 RPM. The compressor wheel draws in fresh air which is compressed and delivered through a charge air cooler to the throttle body.

By turbocharging the engine, the pressure and density of the air entering the cylinders is increased, and therefore so is the amount of oxygen. This enables a greater quantity of fuel to be injected, thus increasing the engine's power output, improving fuel consumption and the ability to maintain power at higher altitudes.

The internal components are oil and coolant cooled. Engine oil and coolant are circulated through the center housing which acts as a heat barrier between the "hot" turbine and the "cold" compressor. The bearing is a sleeve type and is lubricated by engine oil. Oil is circulated to the turbocharger center housing and returned to the sump through an oil drain to the cylinder block.