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Turbo making whooping noise when released from throttle

By, CoolMotor

• 2024-04-18
• 1 View

The loud sound when the turbo throttle is released is the sound of the pressure relief valve working.

1. Working principle of the turbine: When the accelerator pedal starts working, the turbine compresses a large amount of air and pushes it into the engine combustion chamber through the throttle valve. When the driver releases the accelerator pedal, the throttle valve closes. But the turbine blades don't stop working right away.

At this time, there is still residual compressed air in the intake pipe between the turbine and the throttle. If this air is not discharged in time, the strong pressure will cause damage to the throttle and turbine blades.

2. Function of the pressure relief valve: When the air pressure in the intake pipe is detected to be too high, the pressure relief valve will promptly release the remaining compressed air in the pipe to protect the throttle and turbine blades. It also reduces the occurrence of turbo lag accordingly, allowing the engine to work more smoothly. The sound you hear is produced when the pressure relief valve discharges compressed air.

A turbine, a fan in a car or airplane engine, improves engine performance by using exhaust gases to blow fuel vapor into the engine. A turbine is a rotating power machine that converts the energy of a flowing working medium into mechanical work. It is one of the main components of aircraft engines, gas turbines and steam turbines.