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Old 01-30-2010, 07:42 PM   #19 (permalink)
jfitzpat
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Quote:
Originally Posted by tasdrouille View Post
Yup, you are right. My 0-5v stock sensor pegs at 23. That's how I make sure I hit the deceleration cutoff.
FWIW, most sensors bottom out rich pretty easily, I typically use butane, but they can go quite a bit leaner. However, 0-5V outputs are normally limited so that they give more resolution to the analog input on the receiving end in the range that is of most use.

For example, our 0-5V wideband output is .5 lambda to 1.523 lambda, which gives a 10 bit ADC .001 lambda resolution across typical gasoline combustion ranges. But when we are outputting digitally we report readings waaaay leaner, until we reach the pump limit of the sensor, then we just report the partial pressure of O2.

Thanks for the info!

-jjf
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