Flywheel/Encoder patterns

[Mazda Ebrahimi]

Walters Chris wrote:
> 
> >> 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.
> >
> >Just fire the injectors batch every TDC, and lost spark ignition or
> >have the computer fire a coil into a mechanical distributor, then you'll
> >never care where TDC is.
> 
> Wouldn't  this be wasting 7X as much fuel as needed since only one piston
> will be starting its power stroke at any given TDC?
> 
> Snake
> no cool Fords yet, one cool Dodge

Only for one rotation, until you find your reference.