Blow Off Valve

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Blow Off Valve

Post by tazberry on Sat 28 Apr 2007, 1:28 am

Blowoff valves are used to prevent compressor surge. Compressor surge is a event that occurs when lifting off the throttle of a turbocharged car. When the throttle plate on a turbocharged engine running boost closes, high pressure in the intake system has nowhere to go. It is forced to travel back to the turbocharger in the form of a pressure wave. This results in the wheel rapidly decreasing speed and stalling. The driver will notice a fluttering air sound.

A blow-off-valve is connected by a vacuum hose to the intake manifold after the throttle plate. When the throttle is closed, underpressure develops in the intake manifold after the throttle plate and "sucks" the blowoff valve open. The excess pressure from the turbocharger is vented into the atmosphere or recirculated into the intake upstream of the compressor inlet.
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Re: Blow Off Valve

Post by Drift_Instructor on Sun 29 Apr 2007, 5:43 am

ye some bovs sound mad...but flutter ftw!!!
just grab a pod and ur set



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Re: Blow Off Valve

Post by tazberry on Mon 30 Apr 2007, 8:37 am

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Re: Blow Off Valve

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