Sensor Question

[Greg Hermann]

At 10:12 AM 12/10/01, Bob - Uni wrote:
>Hello Greg,
>
>GH> I didn't see crank angle on your list.
>I was going to use the cam angle for that (actually, I was going to
>rip the guts out of a distributor, whack in a chopper wheel and use
>an opto setup)

Hard to get much timing accuracy that way, 60 -2 tooth wheels for crank
position seem to be the approach of choice lately.

Seems to me that, other than the existence of canned code for 60-2 wheels,
that ring gear teeth ought to be able to do pretty well, acting in concert
with two, three,  four, or six crank position sensors (depending on how
many pots you are dealing with), and a cam position sensor. But, of course,
this means three Hall effect sensor inputs. Doing all of the crank position
work off of the flywheel pretty much eliminates torsion vibrations, and
gear and/or timing chain lash as a source of error.

Greg

Believes in DIY to do _better_ --not necessarily to mimic the factory for
less! :-)
>

> Bob                            mailto:rcs07 at uow.edu.au


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