Fuel Economy / Range Calculations

[Qball 16]

On my 06RT, the fuel gauge is wildly inaccurate (fuel strip ) so I mostly ignore it.  I re-set the trip odometer AND re-set my Garmin GPS fuel tracker every fill up.  The computer says I'm averaging 5.11 L/100km (46 mpg), and I used that to calculate my max range 530 km (330 mi) and when I should start looking for a fuel station - I usually start thinking about it after 450 km (280 mi) or so.

 

Recently, I had a concerning thought - if the fuel gauge has any input into how the computer calculates fuel mileage, I could be WAAAAY off in my calculations 

 

Sooooo, I'm now more than a little curious about how the onboard computer calculates fuel economy, and how accurate it generally is.  Anyone know???

[dirtrider]

30 minutes ago, Qball 16 said:

On my 06RT, the fuel gauge is wildly inaccurate (fuel strip ) so I mostly ignore it.  I re-set the trip odometer AND re-set my Garmin GPS fuel tracker every fill up.  The computer says I'm averaging 5.11 L/100km (46 mpg), and I used that to calculate my max range 530 km (330 mi) and when I should start looking for a fuel station - I usually start thinking about it after 450 km (280 mi) or so.

 

Recently, I had a concerning thought - if the fuel gauge has any input into how the computer calculates fuel mileage, I could be WAAAAY off in my calculations 

 

Sooooo, I'm now more than a little curious about how the onboard computer calculates fuel economy, and how accurate it generally is.  Anyone know???

 

Afternoon Qball 16

 

The fuel gauge (fuel strip input) does have an effect on the how the computer calculates fuel mileage as far as miles to empty goes but the actual computed  fuel mileage is based on fuel injector time-on @ xx system  voltage vs wheel speed sensor input. (it knows how much fuel has been squirted in during how many miles of travel).

 

Your best bet is to just use miles traveled from a totally full fuel tank.

 

On my personal 1200RT I figure 250 miles if riding very hard or fast (90mph+), 280 miles if riding somewhat hard or sustained 75-85mph) , & 300 miles if under 75 mph or riding moderately. Light riding back roads can get me upwards of 330 miles out of  a tank  but stop & go traffic can lower the overall so if I ride a lot of stop & go I figure about 250-280 as a safe max.

 

[Qball 16]

24 minutes ago, dirtrider said:

 

Afternoon Qball 16

 

The fuel gauge (fuel strip input) does have an effect on the how the computer calculates fuel mileage as far as miles to empty goes but the actual computed  fuel mileage is based on fuel injector time-on @ xx system  voltage vs wheel speed sensor input. (it knows how much fuel has been squirted in during how many miles of travel).

 

Your best bet is to just use miles traveled from a totally full fuel tank.

 

On my personal 1200RT I figure 250 miles if riding very hard or fast (90mph+), 280 miles if riding somewhat hard or sustained 75-85mph) , & 300 miles if under 75 mph or riding moderately. Light riding back roads can get me upwards of 330 miles out of  a tank  but stop & go traffic can lower the overall so if I ride a lot of stop & go I figure about 250-280 as a safe max.

 

 

Awesome, thanks D.R.!!!