300ZX V6-2960cc SOHC Turbo (VG30ET) (1984)
Turbocharger: Description and Operation
The turbocharger is an exhaust driven device which compresses the air/fuel mixture to increase engine power on a demand basis.
A turbine in the exhaust gas flow is connected through a shaft to the compressor. During normal, steady operation, the turbine does not rotate with
sufficient speed to boost pressure to compress the air/fuel mixture. As engine speed increases, the mixture is compressed, allowing the denser mixture to
enter the combustion chambers and develop more engine power during the combustion cycle.
Intake manifold boost pressure is controlled by a bypass valve which directs a portion of the exhaust gases around the turbine at a predetermined point
in the cycle to limit boost pressure.