[s-cars] While we are on the subject of WGFVs...

[Mark Strangways]

The last place you want a negative pressure (as related to atmosphere) is in 
the inlet to the turbo.
It will rob you of boost, and if the turbo is at or near the operating 
extreme limits it can push it over.
I contend that there is not much negative pressure to be found there, this 
is why I fought so hard over the whole vacuum issue as it relates to the 
wastegate. Until Dave sprung the little venturi concept on us, that changes 
things.

Mark
----- Original Message ----- 
From: <Eric_R_Kissell at whirlpool.com>
To: <Djdawson2 at aol.com>
Cc: <s-car-list at audifans.com>
Sent: Friday, January 13, 2006 7:35 AM
Subject: Re: [s-cars] While we are on the subject of WGFVs...


>
> It would be interesting to see how the vacuum created to the WG by the
> venturi effect in the WGFV compares to the vacuum that exist in the line 
> to
> the compressor inlet, i.e. how much bigger is the venturi vacuum than
> compressor inlet vacuum?
>
> I have to assume that the venturi creates more vacuum than the compressor
> inlet, else the WGFV would not require the venturi effect.  This makes
> sense relative to the venturi systems used by "inexpensive shop tools" you
> mentioned.
>
> Thanks,
> Eric
>
>
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