At When we close Unlock Tool For Volvo oil, the throttle

At When we close Unlock Tool For Volvo oil, the throttle opening degree decreases rapidly until the idling state is in a closed, which means that the engine does not require the intake, or that the airflow in the intake pipe will be hindered at the throttle valve. But at this moment turbocharger does not stop working! Continues to rotate due to inertia, the turbocharger remains in a per minute 100 000 rpm above speed. Now conceivable that the air at this time continues to be continuously compressed into the intake manifold, the intake pipe in the intake pipe in this portion of the high pressure air can not be promptly drained away, it will make rapid pressure rise, it is possible to cause the section valve damage or intake pipe burst.
   In this case, there is a need for the installation of a pressure relief device in the intake duct, so as to remove the pipe from the extra high pressure air in the intake air turbo compression. In fact, the pressure relief valve is installed in the intake manifold, a valve to control the boost pressure. Unlock Tool For Volvo The opening and closing of the relief valve is controlled by the ECU (electronic control unit) operating the electromagnetic coil. The ECU will the turbine outlet supercharging pressure level to make judgment, once the pressure exceeds a threshold value, the electromagnetic coil is energized, or power down control, so as to open or close the pressure relief valve. When the relief valve is closed to ensure a sufficient intake pressure in the intake pipe as the basis, when the valve is open to excess gas can vent to the atmosphere, to reduce the pressure in the inlet, to protect the engine air intake duct. So we hear the the modified car bared, bared the sound is the pressure relief valve, pressure relief exhaust sound.
    In fact, issued by the modified car bared, bared "sound, does not have any significance for enhancing engine renault can clip performance boost, but can render a great boost the value of the illusion. Relatively speaking, the supercharging larger values ​​of the engine, the discharge of such a relief valve pressure relief air more, theoretically the noise generated greater. Modified cars, the pressure relief valve pressure relief when the sound amplification, like a large barrel exhaust pipe - the movement is cool, but not what the actual effect.