O2 sensors at WOT?

ron.boley ron.boley at worldnet.att.net
Thu Nov 5 00:28:13 GMT 1998


Bruce,

Can you advise where one can see these archives (CARB,EPA,SAE)?  Does
one have to belong to these organizations to get access?

Thanks Ron

Bruce Plecan wrote:
> 
> -----Original Message-----
> From: Chris Conlon <synchris at ricochet.net>
> To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
> Date: Tuesday, November 03, 1998 10:03 PM
> Subject: RE: O2 sensors at WOT?
> 
> >> > man's gas analyzer could be constructed using one heated (to measure
> O2)
> >> > and one unheated to measure hydrocarbons, etc???
> >> No.  What the report said (I read it) was that NO O2 sensor senses O2
> >> at the temperatures that they operate at.  They sense hydrocarbons
> >> only.  The temperature required for them to sense O2 was much higher
> >> than the O2 sensor in a normal exhaust stream was supposed to be
> >
> >I had always heard, but never tested, that the O2 sensor reads *lean*
> >under conditions of a rich misfire, due to lots of O2 in the exhaust.
> >Sounds like this would be an easy test to see if the O2 sensor is
> >really responding to O2 or HC. Comments? Maybe I need to go yank off
> >a plug wire...
> 
> I'd suggest a good going over the archives, there are several reports
> and documents all with slightly different takes on the situations.
> >From CARB_EPA_SAE all have points and counter points.
> Some of the older documents don't even mention thermally compensated
> sensors.  Then are you all talking about just the
> switch type, and or the wide ratio.  Also is the way the sensors
> react to different gases as they heat up
> Cheers
> Bruce
> 
> >
> >   Chris C.
> >



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