Ign Advance on MR-2

[Lasse Langwadt Christensen]

"Diehl, Jeffrey" wrote:
> 
> I think you've communicated the main problem for me.  I need to understand
> how the ECU "knows" the engine position.
> 
> If the ECU were a digital computer, I could imagine a fast clock and a
> counter which was latched at the passing of each tooth in the 4-tooth wheel.
> This count could be used to calculate RPM and the clock could be used to
> trigger the firing of the next injector/sparkplug.  But the ECU in the MR-2
> doesn't seem to be that sophistcated.  Looks to be a completely analog
> system!
> 
> I guess this same algorithm could be done in analog...  Is that how it
> works?
> 
> Thanx,
> Mike Diehl.
> 
snip 

I have no idea how it actually works, but it should be pretty simple 
to do it with a simple analog delay from tooth to firing, advancing 
would just be shortening the delay   

-Lasse
-- Lasse Langwadt Christensen, 
-- A Dane in Phoenix, Arizona
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