[Diy_efi] Traction control strategy (solution offered)

[William Shurvinton]

Well, this may be rot ( as I said I'm not a 1/4 mile guy), but what you are
describing is a problem related to too much power in 1st at a particular and
measurable RPM point. Therefore in theory you could hook a switch to 1st
which pops a knock signal out at 7500RPM (you've got a PC there). If the
knock control is anywhere near as adjustable as the Gm stuff from a decade
ago you can set a certain retard and recovery rate that should see you
through the stumble. (this is a stick shift?)

Then again the more I think about it the more I wonder if there isn't
something else. If you launch at 6k something has to be spinning. Either
clutch or tyres. After some x feet grip will be fully resumed, or clutch
will be fully engaged and red hot. If your problem occurs at this point is
it a bog down as grip returns, or the fact that you may have just left the
nice strip of rubber you laid down in the burn out and grip levels are
reduced. Clutching at straws and way outside my knowledge base, but all
possible?

The above paragraph may be all wrong but you have the envious position of
having something to solve that is easily repeatable. Wish all my problems
were like that :-) All I know is that if I launch in my car above 3500 on
the road the tyres just spin. But my car has a different set of compromises
to most street machines. Must look up my AP-22 files and see what I can do
60' in. I think its 2ish as I really  am not well practised at launches.
tyre sacrifices yes: good launches no. One day I'll grow up :-)

Bill
----- Original Message -----
From: Crescent Kao <crescent at c-speedracing.com>
To: <Diy_efi at diy-efi.org>
Sent: Tuesday, April 30, 2002 6:02 PM
Subject: RE: [Diy_efi] Traction control strategy (solution offered)


> The engine management has knock capability but it is ECU dependant. The
ECU
> we are using doesn't have Knock from the factory. Why?
>
>
> Crescent Kao
> Director of Marketing and Sales
> www.c-speedracing.com
>
>
>



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