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RE: Jon's air intake question

To: "Albaugh, Neil" <albaugh_neil@ti.com>, "todd" <todd@twinjugs.com>,
Subject: RE: Jon's air intake question
From: "Dave Dahlgren" <ddahlgren@snet.net>
Date: Wed, 23 Feb 2005 16:52:47 -0500
most of this this stuff is filtered pretty good.
the response rate does not have to be much better than 30 ms. and it is
fine.
Dave
>
> If the turbulence is bad it will create fast pressure waves that can be
> picked up by the MAP sensor. Depending on the system bandwidth (response
> time), the dynamic pressure may be simply averaged if the response time
> isn't very fast. If that is the case, half the time during a pressure
> wave cycle the AF ratio will be too rich and the other half it will be
> too lean. Of course, there are normal intake pressure waves as the
> valves open & close; if an EFI system can deal with those maybe scoop
> turbulence really isn't a problem and I'm "crying wolf".
>
> Any ideas on this, anybody?
>
> Regards, Neil    Tucson, AZ






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