WPSLPGExhaust Gas Oxygen (EGO) sensor Information

[Bruce Plecan]

> There's a lot of O2 discussion in the archives.

Yep, 

  I'll summarize and say
> that the O2 sensor acts like a switch.  The voltage curve is very steep,
> like a straight line, as you pass across stoich.  It's too steep to use
> the O2 in a feedback loop to maintain stoich, which is why manufacturers
> just cross back and forth over stoich so that you average out to
> stoich.  In addition, although the voltages level out on either side of
> stoich, the actual voltage depends on exhaust temp and other factors. 
> So you can't say that .8v (for example) is any particular AFR either.
> 
> An AFR meter based on a cheap factory O2 sensor only needs 2 LEDs:  rich
> and lean, because that's all the information you can get from the
> sensor.
> 
> Garfield is out of town otherwise I'm sure he would have weighed in by
> now.

He's moving
Grumpy
 
> --steve
> 

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