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Old Oct 22, 2018 | 03:27 AM
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Jon Wilder
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Are the FP3 AFR numbers relative or absolute? For example, is "14.7" the "lambda = 1" point regardless of fuel type? Or is it an absolute 14.7:1 ratio regardless of fuel type?
 
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Old Oct 22, 2018 | 11:00 PM
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Lambda is always different for different fuels. Lambda = 14.7: air/fuel ratio for pump gas. Are you running something other than pump gas?
 
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Old Oct 23, 2018 | 11:41 AM
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FWIW, 10% Ethanol Blend will be 14.4:1
Bob
 
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Old Nov 27, 2018 | 01:24 AM
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Originally Posted by Z
Lambda is always different for different fuels.
While the stoich mixture ratio changes with fuel type (i.e. 14.7:1 pure gasoline, 14.4:1 for 10% ethanol), lambda always equals 1 at stoich.

That said, my question was does the Fuelpak FP3 interpret Lambda = 1 as a reading of 14.7:1? In other words, if you were running say 10% ethanol at 14.4:1 and Lambda = 1, is the FP3 still going to show a reading of 14.7:1?
 
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