[Diy_efi] Knock Detection using GM ESC Module

[William Shurvinton]

I don't have a detailed analysis, but the outline is:

F1 engines accelerate so fast that simply using RPM to determine fuelling
causes problems unless you are running top fuel mix and can just pour it in.
By monitoring the rate of change of RPM you can interpolate where in the map
it will be at the next ignition/fuelling event rather than where it is now.

Caveat: Cosworth started using this in the early 90's when there was an
awful lot less processing power available so it may not be as important as
it used to be. However when you have an engine that can rev from 5k to 18k
in a few 10s of a second it does give some interesting control problems.

Bill
----- Original Message -----
From: Dennis Gearon <gearond at cvc.net>
To: <Diy_efi at diy-efi.org>
Sent: Wednesday, May 29, 2002 11:31 PM
Subject: Re: [Diy_efi] Knock Detection using GM ESC Module


> What **ARE** the effects of delta-rpm on mixture and spark?
>
> On Wed, 29 May 2002 21:13:38 +0100
> "William Shurvinton" <shurvinton at orange.net> wrote:
>
> >... I do know that F1 engines rev so
> >fast that they have to use the d/dt(RPM) in fuelling calculations.
> --
>


_______________________________________________
Diy_efi mailing list
Diy_efi at diy-efi.org
http://www.diy-efi.org/mailman/listinfo/diy_efi