Formula One Management and the FIA has announced the planned changes to F1’s engine rules from 2021 at a meeting of current and potential future power unit manufacturers in Paris.
The changes to the engine format are intended to reduce the cost of the power units while ensuring they remain ‘road relevant’ for manufacturers.
The sport will retain the basic configuration of the 1.6-litre V6 hybrid turbo power units which were introduced in 2014. However the recovery of power from waste heat via an MGU-H will be dropped in favour of more powerful kinetic energy generators (MGU-Ks).
Drivers will be given greater control over when they choose to use the energy harvested by the power units.
From 2021 the rev limit will be raised by 3,000rpm to 18,000rpm. This is intended to improve the sound generated by the engines.
More parts will be standardised in a bid to reduce costs and to make it easier for teams to switch between power units. However it remains to be seen whether the existing limits on fuel consumption and fuel flow rate will be retained.
The intended specification of the 2021 power units is as follows:
- 1.6-litre, V6 turbo hybrid
- 3,000rpm higher engine running speed range to improve the sound
- Prescriptive internal design parameters to restrict development costs and discourage extreme designs and running conditions
- Removal of the MGU-H
- More powerful MGUK with focus on manual driver deployment in race together with option to save up energy over several laps to give a driver controlled tactical element to racing
- Single turbo with dimensional constraints and weight limits
- Standard energy store and control electronics
- High level of external prescriptive design to give ‘plug-and-play’ engine/chassis/transmission swap capability
- Intention to investigate tighter fuel regulations and limits on number of fuels used
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