DIY_EFI Digest V1 #284

[talltom]

>
>From: "Woodd, Michael" <wooddm at akcity.govt.nz>
>Date: Mon, 23 Sep 1996 08:05:00 +1200
>Subject: RE: Tom Cloud's self tuning EFI Idea
>
>Excuse me? Anyway,
>
>>I do see potential problems though. For starters, if the system had all the
>>sensors needed to determine the "state of ultimate tune", how long would it
>>take the cpu to find it?? People that dyno tune engines on a regular baises
>>(TODD) would have a very good idea of this. I don't, but I'll guess any 
>way.
>>Let say 20 full throttle quater mile runs just to get maxium dead stop
>>acceleration. There are lots of things to change and adjust, right?. I've
>>done this manually in my early hotrod years. You could spend a whole 
>weekend
>>adjusting and evaluating things.
>
>All a matter of software - the algorithm used.  Actually I was thinking more 
>of a
>circuit racing application, cos thats what I'm into, being as a car should
>be nothing more than a tool for the driver, right? ;-)
>
>And thats why I stressed the importance of having accurate measurements,
>cos if they aren't, then your "perfect" algorithm is going to do funny 
>things, like
>take longer, or maybe even head in the wrong direction.
>
>I plan on starting by simply investigating relationships between one sensor 
>and
>another reading, e.g. acceleration vs vertical g, to account for road bumps,
>difference tween linear g vs wheel derived acceleration should give us the
>gravity vector that tells us we're going up/down hill (I think, like I said, 
>don't
>know the physics well yet).
>My end system will be a combination of these little black boxes, and for
>prototyping they may be just that.

It might be an idea worth considering to have a sensor on a wheel that's 
not a drive wheel if that's possible for actual vehicle speed as compared
to what could be completely spurious numbers.


"a society that will trade a little freedom for a little order 
deserves neither"
                                                       Thomas Jefferson

Clinton doesn't want anything Hitler didn't have.

What do you get with Bob Dole, Bill Clinton, and Dolly Parton in the same room?

Two boobs and a country singer!
 
Harry Browne for president 96!                              Talltom