WB vrs NB info

[Greg Hermann]

>Thank you for the input Frank, but this is what still confuses me.
>SpeedPro and yourself found that pressure differences *don't seem to
>matter in the real world*. Then you say above, that you saw the same as
>Bruce (I assume you mean like he did, going from pre to post turbo
>placement of the sensor), with noticeable wb changes. Bruce was using the
>original diy version, and says he saw a 50mV change. I look at the curves
>from the original circuit files, and they indicate that on the rich side,
>that is very near a 1/2 afr change. The only way I know of reconciling
>these two statements is to assume that nobody thinks a 1/2 afr change
>matters in the real world. Can that be true? Tnx for any help on this.
>Recollecting what *size* of afr changes you observed would be helpful, if
>you can recall that info. Still curious about getting the *quantities*
>straight in all this. Tnx.

NTK says pretty much the same thing in the SAE paper, too!!

Might be that higher EGT and higher backpressure go together and affect the
sensor output in an opposite manner, might be the difference between theory
and the actual way that the sensor is built, might be most anything else,
but the d*mn things seem to work OK in the real world!

Might just be like trying to understand women! :-)

Greg

>Brian "real-world industrial control number cruncher" Massey


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