O2 sensor bias

[xxalexx at ix.netcom.com]

> From:          Alex Samson <asamson at orausa.com>
> To:            diy_efi at efi332.eng.ohio-state.edu
> Subject:       Re: O2 sensor bias
> Date:          Thu, 27 Aug 1998 10:49:51 -0700
> Reply-to:      diy_efi at efi332.eng.ohio-state.edu


> A question that has remained unanswered in my head for many years now is
> if the O2 sensor outputs 0.45v at 14.7 mix,  what is the mix ratio when
> it outputs 0.8v? or 0.9v? or 0.2v?  Does anyone have a graph of a common
> O2 sensor characteristic of Voutput vs Fuel ratio? I have searched for
> Bosch data on this but have never seen it. 
> 
Should be consider as a switch, 0.2 is lean    0.8  is rich 
the transistion mid point is 14.7 or other  A/F value depending on 
stoichemetric property of fuel.
Alex