What Causes the Sound from a Turbocharger Blow-off Valve?

[ParkerAnn]

Turbocharger blow-off valve sound is the operational noise of the blow-off valve, which is a normal phenomenon. Turbocharger working process: When the turbo starts working during acceleration, it compresses a large amount of air and pushes it through the throttle into the engine combustion chamber. However, when the driver releases the accelerator pedal, the throttle closes. The turbo blades do not stop immediately, and there is still residual compressed air in the intake pipe between the turbo and the throttle. If this air is not released promptly, the high pressure can damage the throttle and turbo blades. Blow-off valve introduction: The blow-off valve, also known as the engine intake supercharger, compresses the air before it enters the engine cylinders to increase air density, allowing more air to fill the cylinders, thereby increasing engine power. Engines equipped with superchargers can not only deliver greater takeoff power but also improve the engine's altitude performance.