Electronic timing advance

[Bruce Plecan]

-----Original Message-----
From: HADJIASLANIS ARIS 1260 800 <aris at exmail.panafon.gr>
To: diy_efi at esl.eng.ohio-state.edu <diy_efi at esl.eng.ohio-state.edu>
Date: Sunday, January 17, 1999 6:23 AM
Subject: FW: Electronic timing advance


>The next now is to disable the existing (horrible) centrifugal advance
>mechanism, which is easy.
>However the 3rd is to then need to insert a digital programmable
>ignition advance / retard mapping unit between the optical interruptor
>output and the ignition unit.
>Hmmmm after looking in the WWW for ages I have been unable to locate
>such a unit devoid of other frills or compromises (e.g. just turbo or
>Nitrous Oxide retard which really is quite different from what I need).

Which means?.  You want someone to custom design something for
you?.  Your wanting to design your own?.  Or you need to adjust
what you want, to what's available.  Or dig further for answers.
Maybe use part of a oem ecm, for timing control.
Bruce  
>
>My original posting to which you replied most kindly was ...
>"... 3. Feed the optical pick up output to a digital advance / retard
>unit
>implementing a simple, programmable advance curve capable of at least 16
>sites.
>4. Optionally add an imput for a detonation sensor to provide a few
>degrees of detonation induced retard.
>5. The unit should just provide an output emulating a normal contact
>breaker, to drive a separate high energy electronic ignition unit
>(already fitted in my car)...."
>Any ideas will be highly appreciated.
>Regards
>Aris