New additional Injector Controller

Tony Cooper tony.cooper at virgin.net
Fri Jul 10 06:54:07 GMT 1998



Frank F Parker wrote:

> With all the discussion about injector controllers, the group may be
> interested in a new design controller a friend of mine who monitors
> the list has designed:
>         All digital design, 8751 micro
>         Uses GM map sensor, adaptable to 2 or 3 bar
>         Peak and hold injector driver
>         Has trimpots for:
>                 min psi of boost at which injection starts
>                 min pulse width
>                 gain, eg: the change in pw per psi of boost
>         Has dipswitch for min rpm of injection
>         Has synchronous injection per rev ( eg: every 2,3,4 ref pulses)
>         Setable for 4,6,8 cyl
>         LED bargraph of pulse width or duty cycle
>
> <Snip

Forgive me for beeing perdantic, but why does his system need 'pots' in an all
digital system!!!??????

> The designer depending on interest could make complete units,
> preprogrammed kits or parts. He would be interested in others doing
> the PCB and he supplying the rest.
>
> In reasonable quantity, the complete units may cost about $200, kits
> etc would be less.
>

Ouch - its a lot of money for such a simple system!!!!!

> Reply with your interest in such a controller, interest in doing a pcb,
> and whether most would want a kit or completed units.
> I am not the designer but will try and answer as many questions as I can.
>
> Regards,
>
> Frank Parker
> fparker at umich.edu


Tony
--
Sent By Tony Cooper.
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