Quote:
Originally Posted by t vago
Every time I fill up, I take my trip timer value, multiply it by 30 MPH, and then divide that into my corrected trip odometer value (corrected because my speedo pinion factor isn't quite dead-on accurate - about 99.3%).
For the resulting quotient, if it's below 1, then that tankful is completely city driving. If the resulting quotient is above 2, then that tankful is completely highway driving. Values between 1 and 2 are treated as follows: subtract 1, then multiply by 100. That gives me a percentage of highway driving. I cna then easily convert this value into something I can plug into Fuelly.
It may not be completely accurate, but it gives me a good idea.
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So basically
<30mph average = 100% city
30-60mph average = weighted (45 = 50/50)
>60mph = 100% highway
Interesting. I should get a scangauge and see what my numbers are using your system. I'd guess closer 80% city than the ~50% I have right now.
(
The Appliance (Saturn SL2) | Fuelly)
I wonder if an MPGuino could be programmed with an algorithm to take into account multiple variables and generate a highway/city number for each tank. Say, average speed, # of stops spent idling > 30 seconds, amount of time spent coasting < 35mph, etc.
It would be an interesting experiment.
<--- data junky.