Turbocharger - Gasoline: Operation: Compressor
Compressor is connected to turbine by a shaft. As turbine wheel turns, so does compressor wheel. No exhaust gas is actually passed into compressor. The spinning compressor forces more air into intake manifold than would normally be drawn in under atmospheric pressure.
With a higher intake manifold pressure and denser charge available, more air is forced into combustion chamber on piston intake stroke. A denser mixture results in more power output from engine. The faster the compressor spins, more air is compressed into manifold. Thus, engine demand can be satisfied. See Fig 2 .