I apologise in advance, maths was not a strong subject for me, but Ill try keep the spelling and or grammar up to a legible level :)
My car had a full 45L fuel tank I drove 150km Fuel gauge showed just less than a 1/4 tank used virtually a mm away from the 1/4 line
Can someone take a stab at some mileage figures for me!
pzkpfw,
Apr 1, 12:17pm
13 k/L or 7.5 L per 100km
But no way it's accurate, fuel gauges are often not linear.
deals4youtoo,
Apr 1, 12:17pm
Hi, you get 150 km's from 11.25 L, which means that you get 13 Km per L approx.
biddy6,
Apr 1, 12:17pm
Very rough, but 8l/100klms
franc123,
Apr 1, 12:19pm
No because you don't know how many litres its used to travel the 150km until you fill the tank again. Fuel gauge measurements are useless.
cypherboy,
Apr 1, 12:19pm
I agree, thanks for working that out for me.
a.woodrow,
Apr 1, 12:20pm
Theres absolutely no way you can make any kind of accurate estimate with those figures. best thing you can do is fill the tank right up till the nozzle clicks, drive for a set period of km's (say 100) then go back to the same bowser and fill up again.
unbeatabull,
Apr 1, 12:23pm
Fill it up. Drive it till empty. Note down mileage. Fill up again. Divide Litres required to fill from empty by the mileage then multiply by 100. That will give you litres/100k.
mariner26,
Apr 1, 1:29pm
Good on ya Matt! How do I get home after emptying the fuel tank! Will you pick me up pse!
socram,
Apr 1, 1:43pm
Fuel gauges and even the computers are next to useless for predicting how much is left in the tank.It is not that the gauges are not linear, it is because they work on a float.If your tank was conical for example,with the point downwards, the tank level drops very slowly, but the last quarter would disappear extremely quickly.The computer may say that you have 100kms to go at the 1/4 mark, but you'd be lucky to get 25kms out of the tank. Conversely, if the base of the cone was at the bottom, at 1 quarter showing on the gauge, and the computer saying 100, you might get 250kms.Figures not accurate, but you get the gist.You could of course get the fuel gauge scale adjusted to suit the tank shape.
unbeatabull,
Apr 1, 1:49pm
Obviously you would fill up when the empty light is on, not once you've completely ran dry.
meathead_timaru,
Apr 1, 2:15pm
Information from my trip computer is very accurate, especially remaining range. Instantaneous consumption readings are based on a calculation of duty cycle of injectors, throttle position and engine speed. I've also found the average L/100kms to be very accurate and the range to empty is very linear, unlike the gauge. Probably because it's easy to adjust for a value from a sensor with a simple tabled value, such as voltage from a fuel sender, but not so easy to adjust an analogue fuel gauge.
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