**2.1. Analysis of race durations in the Rotax max challenge Poland championships in 2016**

**2. Model of go-kart energy usage**

**Figure 2.** Analytical panel Off Camber Data application.

of energy (%).

108 Green Electronics

tally derived on different racetracks in Poland and Europe:

*WR*max = *PO*max × *t*

run times on three racetracks with different characteristics.

lap with the highest power usage (kW).

In order to determine energy requirements, the model assumes that the energy stored in batteries EB must provide the possibility to finish a maximum duration race (based on the Rotax Max Challenge 2016 Cup) with the go-kart using maximum power, which was experimen-

EB = *WR*max × n (1)

where EB—energy stored in batteries (kWh), WRmax—work done by running go-kart during the race with maximum energy consumption (kWh), n—coefficient of securing sufficient level

In simplified terms, it was assumed that WRmax is the work done by the combustion engine of

where tRmax—the maximum duration of the race based on an analysis of the Rotax Max Challenge 2016 Polish Championships (s), POmax—average power used by go-kart during a

POmax was obtained by selecting the highest value from the calculated average power POs, for six different cases of go-kart racing in a given age category. We chose the shortest and longest

*<sup>R</sup>*max (2)

a go-kart of average power POmax throughout the maximum duration of the race tRmax.

Following Eq. (2), it was necessary to analyze the duration of races tRmax to calculate the work performed by the power train. This analysis is based on the duration of go-kart races in the 12 rounds of the Rotax Max Challenge Poland Championships in 2016.

The analysis allowed us to determine maximum race times for the drivers who had completed full races in each of the age categories. **Figure 3** shows the time intervals in which the drivers finished the races of the given round of the Rotax Max Challenge Poland Championships in 2016. The data for wet races of the first round of the Rotax Max Challenge Poland Championships in 2016 are shown separately.

**Figure 3.** Race durations in Rotax Max Challenge Poland Championships 2016 for given categories.
