Theory of Operation
WASTEGATED TURBOCHARGERS OPERATION
by opening or closing the wastegate valve to pass
The wastegate is a spring-loaded diaphragm controlled
excess exhaust gas around, rather than through the
by boost pressure. It is designed to protect the engine
turbine thus maintaining the desired boost pressure
and turbocharger by limiting turbocharger boost
and turbocharger speed.
pressure and prevent turbocharger overspeeding at
high engine rpm (high load).
As engine speed increases, the boost or manifold
pressure acts to maintain desired turbocharger speed