WPSLPGExhaust Gas Oxygen (EGO) sensor Information

[Seth]

I am gonna put my flame suit on for a sec here.  Don't take that as me
being a "guru" though.

I was always taught that there is a small useable area on the curve of a
standard EGO (besides the steep "switch") and it is rich of stoich.
Mostly because there is still some slope on the rich side (but not much,
and it looks like you'd have big problems with any offset errors when 80
millivolts covers lambda .99 to lambda .80). That being said, I do not
have practical experience with exploring that area of a standard
EGO/HEGO.  I also don't think this is done in practice, at least in production.


-Seth




ext-peter.betts at nokia.com wrote:
> 
> Ah! So you think the sensor works over a larger range and just because the
> ECU doesn't use it, it doesn't stop me using it as a diagnostic aid with my
> AFR Meter?
> 
> When I say larger range I guess it gets pretty non-linear either side of
> stoch'  ? But I'm hoping you can still make sense of the sensor output
> either side of it.
> 
> Guru needed to reply I think.
> 
> Pete
> 
> > -----Original Message-----
> > From: EXT Christian J. Knudstrup
> > [mailto:Christian.J.Knudstrup at esc1.net]
> > Sent: Wednesday, August 02, 2000 1:58 PM
> > To: diy_efi at diy-efi.org
> > Subject: Re: WPSLPGExhaust Gas Oxygen (EGO) sensor Information
> >
> >
> > Someone correct me if I am wrong but the Sensor works at all
> > ranges it is
> > just that at WOT you are mostly running rich and want to be
> > running rich so
> > the computer is told to ignore the O2 values while at WOT.
> >
> > If I have misunderstood this point please someone correct me.
> >
> > Christian
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