o2 and EGT questions

[Mark Shaw]

Steve=Ravet%Prj=Eng%PCPD=Hou at bangate.compaq.com Wrote:
> I can answer this one...  Unlike most questions posed here... :-)
> 
> It looks like this:
> 
> 
>                      /-----------------
>                     /
>                     |
>                     |
>                    /
> ------------------/
> 
>        rich       stoich       lean
> 
> It has a very steep slope at stoich, which is why they (typically) only read 
> rich/lean, not how rich or how lean.

oops.  You got the phase backwards.  The voltage is high for rich mixtures.
There has also been some SAE papers on how to use the O2 sensor in a constant
voltage, variable current mode or other ways to predict mixtures other than
stoichiometric.  Try:

Sasayama, et al.  	SAE 910501 
Wang, et al.		SAE 930352
Brialsford, et al.	SAE 950531

Sasayama is particularly interesting.

Mark