[Diy_efi] when measure the MAP?

[William Shurvinton]

Remember that you are basically working out the equation for fuel using PW ~
Fuel_constant * MAP * VE(RPM,MAP) *Gammae ( This is the standard SD
equation: other flavours exist).

So you have 2 choices: either sample map at a known point and correct for
this in the lookup tables OR make a low pass filter for the Map line using a
cavity and restriction. The latter is much easier, as shown by its existance
on some OEM apps.

Bill

----- Original Message -----
From: "Le Chevalier Noir" <chevaliernoir at free.fr>
To: <diy_efi at diy-efi.org>
Sent: Thursday, October 31, 2002 10:49 PM
Subject: [Diy_efi] when measure the MAP?


> Hello
>
> answers about speed/density are very interserting, but I'm wondering WHEN
to
> measure the MAP?
> In my case, I work on a single cylinder, so pressure change a lot during
the
> engine cycle.
> I imagine that the best point would be at the end of admission, when
piston
> is low.
>
> are you agree?
>
> Le Chevalier Noir
>
>
> _______________________________________________
> Diy_efi mailing list
> Diy_efi at diy-efi.org
> http://www.diy-efi.org/mailman/listinfo/diy_efi


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