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Old 11-07-2012, 02:30 PM   #1 (permalink)
njakts
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Location: Latvia
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MPGuino metric version bugs?

Hi!

After using MPGunio for a while I found a problem. VSS is calibrated and works well, but consumed litres and average consumption does not match. If I calibrate it using consumed litres, average consumption is off, if calibrated by average consumption, litres consumed are off...

also there is a difference between instant consumption, current and tank average. I hooked my mpguino up to a signal generator at home to have constant speed and injector input and after reseting tank and current and after `driving` for a while I collected the readings and this is what I got:

cruising at 100 kilometers per hour:
instant consumption - 12.66 l/100km
tank average and current - 10.27 l/100km

after 10 kilometers consumed fuel showed 1.27l, so that means instant cons. is correct.

why are current and tank averages incorrect?

Is that a calculation mistake in the code from converting mpg to l/100km?
Thanks

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