Fuel Injection Software

peter paul fenske pfenske at direct.ca
Fri Jun 21 02:08:00 GMT 1996


>Hello Everybody:
>Well John decided to be nice to me and finally posted some
>fuel injection software I wrote for the HC11. This was 
>an early version but is enough to get everyone started.
>To make this thing run you need an EVB and a few bits of
>IO added. I built an io board which plugged into the EVB
>and if anybody wants the layout ask me. Parts were
>a MC3479 IAC driver, two LM1649 injector drivers, a quad driver
>an op amp for the O2 sensor, a high side driver plus some
>conditioning for the A-D. I can also provide a schematic.
>Please beware of the following CAVAT. This thing will run
>a motor albeit you may need some ether for starting in Nome.
>However there were many sessions of bangs ect when things went wrong
>BE CAREFULL!!!!!!!!
>As for the code. At the time I didn't yet look too closely at other
>people's code so it is purely my own. I think the documentation
>could use some help so email me if you need any. 
>However it will give everyone an intro to fuel mapping, input
>capture of ref timing, and loading the injectors. The IAC is 
>controled by a pot from one of the AD channels. The software
>I developed for this function is quite flakey so if someone
>wants help me with this. Unfortunately I used buffalo for 
>communication so I found operation above 3000 rpm difficult.
>Take out the hooks to the monitor for high speed operation.
>Good luck everyone.
>Peter




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