02 sensor - temprature compensation.

[Bruce Plecan]

-----Original Message-----
From: Espen Hilde <mwichstr at online.no>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Friday, March 19, 1999 5:06 PM
Subject: 02 sensor - temprature compensation.

Need to have a second sensor, independent of O2 for sensing temp.
Now if you used a heated O2 sensor and used the resistance of the heater as
an indication of the EG temperature, then your cooking.  Now that gm has 4
wire O2s that is something to look at......   830mv, can be 12.5 to 11.3:1
depending on EGT.
Bruce


>Seems like its difficult to accept that a regular o2 sensor is not accurate
>in
>rich or lean and high temp conditions.
> Making  wide band sensor circuit have stranded 2 times......maybe its to
>time consuming or to difficult?
>The wide band sensor is expensive......
>What about developing a temp compensating circuit for the LM 3914  based
>led meter?
>Is this easy?
>Maybe a led temp meter with it?
>Espen Hilde
>