WB Instruments

[Brian L Massey]

BobR,

I do understand that if the cylinders are not quite the same, that will
show up, just like misfire would show up. That wasn't really my question.
Sorry I poorly stated.

Just after I came on the list, I believe it waws bruceP said that without
filtering, the WB o2 output wasn't much use because of all the
variations. He even mentioned wanting a "peek detector" or something to
get at the data you would want. I assumed an old-timer would have their
car in good tune (Bruce you owns a well-tuned GN right?), I figured he
was saying that even with the cylinders all about the same mix, there was
still lots of noise or other stuff  in the signal. My question really is,
where is that coming from if not afr variations or dilution?? It sounded
to me like you fellas were trying to pull the actual afr out of a noisy
signal. And if the sensor is indicating what it's seeing, that afr
"noise" has to come from somewhere? The where is what I was asking about.
I just naturally assumed you were talking about the actual afr showing up
as pulses in the output, especially when Bruce mentioned the peek
detector.

Are you saying what I was saying, that if all the cylinders are balanced
in afr, there would be a simple flat line to look at? I know thats
*supposes*, but I'm trying to understand just what these sensors see. And
Bruce maybe you can explain the thing about the peek detector? Tnx.

Brian


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