Lambda (wideband) vs. narrowband O2 voltages (BWW)...
12-13-2004, 06:01 PM
#14
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Yeah, Lambda != O2 voltage...
Just wanted to give people a comparison of both values at the same time. The lambda values are centered around 12:1 AFR.
-Dave Pramanik
-Dave Pramanik
12-13-2004, 06:02 PM
#15
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Kinda what I wanted to show.
While targeting ~0.85V on the narrowband sensors will generally give you a sense that you are rich enough, you can't really correlate it to an AFR.
-Dave Pramanik
-Dave Pramanik
12-13-2004, 06:47 PM
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Wanna be a real hero? Put the O2 voltages, lambda, and A/F all on the same graph... ;-)
I'm going to try and do some dyno pulls while logging O2s sometime right after the new year...see how the A/F at the tail(non-ideal) correlate to O2 voltages. Then do it off a bung before the cats and see the differences then.
keep ya posted.
keep ya posted.
12-13-2004, 07:12 PM
#19
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Pink lines are lambda. Blue are O2 voltages.
They are close enough that the same scale can be used. I just graphed them together to show the (perhaps lack of) correlation between wideband lambda measurements and narrowband O2 voltages.
-Dave Pramanik
-Dave Pramanik
12-13-2004, 07:14 PM
#20
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Thought it made more sense as lambda...
I could redo the graphs with AFR (since AFR and lambda are linearly related), but I'm tired so I'm not gonna do it tonight. :P
-Dave Pramanik
-Dave Pramanik