Rally1 hybrid cars (2022-)

[Mirek]

So for the video as also mentioned that the boost lenth depend on the lenth of of stage ,The total energy have only 100KW, Is there have the boost difference for each boost by the ECU?

For 4KM stage, each boost have 130 HP,But for 40KM stage ,each boost have only 13 HP to saving more energy for the rest of the stage ??

Man, please aducate yourself in basic physics. Your questions make no sense whatsoever.

First kW or Hp is NOT a unit of energy. It is a unit of power which is a different thing. Power is a quantity used to describe energy flow per unit of time.

The energy is described by joule or Wh (power multiplied by time). In this case the energy is 3,9 kWh which means that the battery is large enough to give the car 3,9 kW steady power for 1 hour, or 234 kW for one minute. That is of course without any recuperation, i.e. recharging by braking power.

The extra power the WRC system can deliver is 100 kW. Now divide 3,9 kWh by 100 kW and you get that the battery capacity is enough for 2,5 minutes of full boost. For city cruising on the road section it can be likely around 3x more.

But of course the recuperation adds a lot of energy. We don't know what recharging power can be used in WRC cars but a heavy braking produces much higher power than the extra boost, which means that the time spend on braking to recharge the energy is not long.