Dynamic Fuel Saving Calculator for Endurance Events
This fuel saving calculator is designed to help drivers work out how much time they will save or lose at different levels of fuel saving in endurance events. In addition to the standard parameters such as tank capacity, normal lap time, race time, etc., you need to enter the following data:
- Race Time (min): The duration of the race in minutes. For example, a 24-hour race lasts 1440 minutes, a 12-hour race 720 minutes and so on.
- Normal Lap Time (s): The average lap time progonised for the race in advance, including lapping, duels, etc. This explicitly does not refer to the fastest qualifying pace.
- Normal Fuel per Lap (l): Normal fuel consumption during the race when driving without fuel saving.
- Fuel Capacity (l): The maximum tank capacity of the car used.
- Max Fuel Save per Lap (l): The maximum reasonable fuel saving possible per lap.
- Max Time Lost per Lap (s): Time loss per lap with maximum fuel saving.
- Time Lost per Stop (s): Time lost per pit stop. This does not refer to the time of the stop itself, but to the entire process including entry and exit. This refers to the combined delta of in and outlap compared to normal race laps.
Inputs
Results
Change the value to your liking and press calculate!
Notes
Here you will find some notes on the use of the fuel saving calulator:
- Such a calculator only makes sense with a constant driving style. If there are differences in pace within the team, you should be able to handle this by averaging the times if the driving times are evenly distributed. However, if the variation is too significant, fuel saving becomes questionable anyway
- The calculator then determines different strategies, starting from a zero saving strategy up to the maximum possible saving in steps of 0.05 litres. For the time loss per lap, a linear interpolation is used (more saving → more time loss).
- The results are sorted by the most important criteria first: The maximum possible race laps. Then they are additionally sorted in ascending order according to the time of crossing the chequered flag.
- The exact end of the race is difficult to impossible to predict, especially in multiclass races. For example, depending on the rules, it may be theoretically possible to have to drive another lap if you are not leading the race.
- You should also always take a look at the value in the last column. If the last stint is very short, it may make sense to extend one or more stints by the required number of laps. This tactic can then possibly be even faster.
