O2 sensor bias

[Zack]

Graph I'm looking at (reproduction of Volkswagen data) pretty well 
agrees with what you quote for the leaner portion but not the rich 
side.  I'd say more like 13:1 or so at 0.9 volts, couple SAE papers 
I've looked at also agree with this well, and I know my RX-7 which 
runs a fairly rich mixture at WOT runs a solid 0.84 volts on the 
O2 mete.  A number of people I've talked to indicate they see 
best power somewhere in the range of 0.86 - 0.90 volts, which would 
agree pretty closely with the equation of that voltage with a 13:1 
ratio.

Z

> > Yes I do. In the Accel EMIC Training Manual (don't ask!) on page 1-5 , Fig
> > 1.3B presents a graph of the output vs. lambda of whatever Bosch 3 wire
> > sensor it is that Accel sells with their EFI kits. "Output voltage switches
> > rapidly from 200--800 mv" at lambda =1 (14.7:1). Looking at the graph, the
> > output is down to  100 mv by 15:1
> > and up to 900 mv by 14.4:1.