Cheap O2 Sensors and reference air

[bamcknig at postoffice.syspac.com]

Date:          Sat, 10 Oct 1998 21:50:37 -0600
From:          Shannen Durphey <shannen at mcn.net>
To:            diy_efi at efi332.eng.ohio-state.edu
Subject:       Re: Cheap O2 Sensors and reference air
Reply-to:      diy_efi at efi332.eng.ohio-state.edu

Kevin wrote:
> 
> ----------
> From:  Greg Hermann[SMTP:bearbvd at sni.net]
> Sent:  Saturday, October 10, 1998 5:49 PM
> To:  diy_efi at efi332.eng.ohio-state.edu
> Subject:  Re: Cheap O2 Sensors and reference air
> 
> >On Fri, 9 Oct 1998 18:09:37 +0000 xxalexx at ix.netcom.com writes:
> >>> Ok, I'll bite. Could someone please explain to me how the reference
> >air
> >>> for an O2 sensor is inside the wire or comes from the wire? I had kind
> >>> of figured there was an active layer (or layers), with thin conductive
> >>> film electrodes on each side, which still allowed O2 to pass through,
> >>> with the wires attached to the thin-film electrodes.
> >>
> >>There is a molecular diffusion transport mechanism involved.
> >>The wires could release O2 at the boundary layer, from various
> >>diassociation energies, such as cosmic rays or high temp, depending
> >>on impurites and  mislocations but the amount would be small.
> >>alex
> >
> >Also, if the muffler bearing is siezed, the gamma rays released by the
> >accelleration of the exhaust valve faces won't have a straight shot to
> >the O2 sensor.  This will cause the O2 sensor to drift out of calibration
> >over time.
> >
> >Ray
> >
> And omigawd, don't forget to keep the sponson rods adjusted properly, or
> everything else will come undone!!!
> 
> Greg
> 
> Make sure the piston return spring isn't broken!!  Oh, and make sure the blinker fluid is full!
> 
> Kevin
Actually, errant gamma rays can be contained by using lead solder
combined with double walled, nitrogen cooled exhaust systems.  I takes
some skill, but the vertical soldering/high overlap technique can
produce acceptable results providing that ambient temperatures do not
exceed 73 degrees Fahrenheit outside, including wind chill.  Just
remember that in order to be emissions legal, all required polluting
equipment will be manditorially retained in aforementioned locations, to
be discussed later in time as space allows.

Shannen


Ok, now I know your'e pulling my leg(figuritivly).  Everybody knows 
that for scientific work, you have to use metric. Shame on you 
Shannen for using Fair and height when you should be using Sell see 
us.

Bob McKnight
PhxAZ