Fuel Consumption from Dyno Test
Submitted: Monday, Jan 30, 2006 at 16:07
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chump_boy
Afternoon all,
Just a quick one. Is there a way to measure fuel consumption by just using a dyno?
The reason I ask is from post 30198 - Bill S rekons he has shown in 2 dyno tests (taken 47 minutes apart) that his Feltch has caused a lower fuel consumption in the second
test.
Now, I thought power and torgue was measured in a dyno. Somehow he has come up with fuel figures of 20.4L/100km then 19.1L/100km.
Can someone explain how this would be possible?
Cheers,
Chump
Reply By: Ken - Monday, Jan 30, 2006 at 21:33
Monday, Jan 30, 2006 at 21:33
Hi Chump Boy,
As others say the fuel economy can be measured easily by the use of a fuel flow meter, strickly not part of the dyno but often used in conjunction with one.
What is probably not realised , specially if you are looking for particular result, is that there are many variables in such an exercise as this and eliminating them is vital to getting accurate and meaningful results. eg. was the dyno load applied exactly the same in each case ?
In my view the difference is small and most likely within the limits of variability [and possibly also accuracy] of the
test method and equipment.
Ken
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Reply By: arthurking83 - Monday, Jan 30, 2006 at 23:59
Monday, Jan 30, 2006 at 23:59
He may have been using the figures from a "trip computer", as most vehicles tend to come equipped with these nowadays???
Dunno??
But!!!
I'm weary of wild claims, even if I saw it with my own eyes!
If he want's to prove that this fletch fuel filter really works, he could hand them out(with a bond, of course) and not charge the customer, until that customer has realised a fuel saving!!
The customer would therefore only "lose" the amount of money it cost to install(and subsequent removal) of the flitch! ;)
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