Lambda Sensor

[steve ravet]

The only sensor that works with the diy_Ego project is the honda one
mentioned in the project notes.  It's a completely different thing from
the 1/2/3/4 wire switching types typically used by auto manufacturers. 
The honda one costs about $250 I think, but at least the circuit is
cheap!

--steve

Mike Blakey wrote:
> 
> I'm after some data on a 1-wire O2 sensor.  I'm planning to construct the EGO meter
> as per diy-efi web site, but I still have some questions
> 
> I'm planning to use a universal 1-wire sensor. But I can not find any technical
> data on them.
> 
> 1.  Does the sensor require a bias or excitation voltage?
> 2.  If the output voltage is self generating (albeit at high impedance) what
> voltage corresponds to what oxygen level?
> 3.  what is the correlation to oxygen level and mixture ratio?
> 
> I have already built the circuit but have yet to buy a sensor, any recommendations
> would also be appreciated.
> 
> Thanks.
> 
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-- 
Steve Ravet
steve.ravet at arm.com
ARM,Inc.
www.arm.com
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