Dave;
Yes, if the sensor system has a 30ms response time it should be able to
track the intake pressure fluctuations.
Regards, Neil Tucson, AZ
-----Original Message-----
From: Dave Dahlgren [mailto:ddahlgren@snet.net]
Sent: Wednesday, February 23, 2005 2:53 PM
To: Albaugh, Neil; todd; Jon E. Wennerberg; Keith Turk
Cc: land-speed@autox.team.net
Subject: RE: Jon's air intake question
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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