Flywheel/Encoder patterns

[Kalle Pihlajasaari]

Hi There,

> An encoder giving absolute crank position would implicitly supply an 
> interrupt when the position changes value. Reading crank position directly 
> means you wouldn't have to fool with timers or counters to derive it. You'd 
> also know exactly what the position is upon start-up without having to store 
> the last known position info upon shutdown. No way around the cam sensor tho 
> that I can see.

I still have not figured out why one could not replace the distributor
with a 512 line Grey/binary encoder with 9 bits of absolute crank position.

Make a backlash free coupling to the shaft and perhaps preload the
shaft in the engine as well.

Absolute position to 1.4deg on the crank (0.7 on the cam shaft)

Cheers     *<<<-|
-- 
Kalle Pihlajasaari   kalle at ip.co.za   http://www.ip.co.za/ip
Interface Products   P O Box 15775, DOORNFONTEIN, 2028, South Africa
+ 27 (11) 402-7750   Fax: 402-7751    http://www.ip.co.za/people/kalle