effect of CAT on WBO2 readings?

[rr]

A lot. To quote from the 920234 SAE paper:

    "All sensors downstream of the catalyst cannot catch
    the misfire signal (p 35)."

All sensors is regarding both a UEGO and a HEGO sensor.
Have to remember that the job of a cat is to convert HC into
CO/CO2 by the burning of O2.

BobR.



rob files wrote:

> Hi all,
>
> How much (if at all) will a WB measurement change if the sensor is placed
> post cat (tailpipe probe), as opposed to pre cat (header bung)?
>
> Thanks,
> Rob
>

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