O2 sensor response times

[Bernd Felsche]

Fritz Moore writes:

>A fairly basic question here,

>Can the wide range 02 sensor measure AFR on the rich side of
>stoichiometric?

>If so is this because it adds 02 to the sample and then measures
>the 02 current required to get back to a lean i.e. 02 present
>condition?

>I guess my real question is how can it measure AFR by 02 content if
>there is no 02 content in rich conditions?

By pumping a little from the "outside". The wide-band  O2 sensor
needs outside air as a reference, just like the "switching type"

-- 
Real Name: Bernd Felsche
    Email: nospam.bernie at perth.DIALix.com.au
     http://www.perth.dialix.com.au/~bernie - Private HP
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