Momentary and average fuel consumption, function - GF54.50-P-2005GH
MODEL 163 with CODE (245) Trip computer
Momentary fuel consumption
The momentary fuel consumption is displayed in either
- miles per gallon (Fig. 1)(the possible range is 99.9 (previously 70) mi/gal to 0 mi/gal), or in
- l/100 km (Fig. 2) (the possible range is 0 l/100 km to 36 (previously 99.9) l/100 km).
The current fuel consumption is calculated from the distance traveled in a second and the quantity of fuel used during this second. The value is updated every second.
When the engine is running and the vehicle is stationary, the maximum value (0 mi/gal or) 36 (previously 99.9) l/100 km) is displayed. When the vehicle is decelerating (inertia fuel shutoff) at rotational speeds of approx. 2000 rpm, the minimum value is displayed.
Average fuel consumption
The average fuel consumption is displayed in either
- miles per gallon (Fig. 3) (the possible range is 99.9 (previously 70) mi/gal to 0 mi/gal), or in
- l/100 km (Fig. 4) (the possible range is 0 l/100 km to 36 (previously 99.9) l/100 km).
The average fuel consumption is calculated from the distance traveled since the last reset and the quantity of fuel required to travel this distance. The display is updated every 3 seconds. Since this is an average value, the display reacts very sluggishly to changes in the driving conditions.
- The display is not reset automatically.
- Resetting the average fuel consumption (reset)
Ensure the trip computer control module set to the "average fuel consumption" mode. Press and hold down the Reset button for at least 2 seconds.
Data required to calculate fuel consumption
The trip computer control module (TRIP, N41) requires the following information to calculate the momentary and average fuel consumption:
- Quantity of fuel currently used (from injection system control module (N3)via engine compartment CAN)
- The 4 wheel speeds (from traction system control module (N47)via engine compartment CAN)
Kilometer / miles switchover, function up to 31.8.00 GF54.50-P-2002GH Selecting country, function as of 1.9.00 GF54.50-P-2012GH