Vanagon EuroVan
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Date:         Fri, 30 May 2008 18:18:14 -0700
Reply-To:     John Bange <jbange@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         John Bange <jbange@GMAIL.COM>
Subject:      Re: Train YOUR vehicles to get better gas mileage (it's Fryeday)
In-Reply-To:  <m13anz9vzp.fsf@cs.indiana.edu>
Content-Type: text/plain; charset=ISO-8859-1


> Does the Vanagon ECU (digifant) "learn"?  I thought it was a pretty
> dumb system.


Nah, dumb it is indeed. Doesn't remember a thing. Digifant and Digijet
live constantly in the present, looking at what the engine is doing
and adjusting what they can according to hard-coded data tables in
ROM. There are probably two or three things on timers, like initial
engine warm-up mode or bogus O2 input sense, but they represent a
"memory" of no more than a few minutes, max. Vanagon ECUs are pretty
crude by modern standards.


--
John Bange
'90 Vanagon - "Lastwagen"
'90 Vanagon GL - "Wiesel"
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