Braking energy
When braking energy , the energy is referred to colloquially required to provide a moving object for delaying (z. B. a vehicle) via a braking system.
Physically, it involves the conversion of the body's kinetic energy , mostly into thermal energy through friction , e.g. B. via heating of the brake system. In rare cases, the heating can cause the brake discs to glow red.
Modern braking systems try to use the braking energy retrospectively, e.g. As in hybrid drives for batteries to charge. The energy conversion takes place via a sophisticated feedback system, which works similar to that of a generator .
For example, in order to brake a 1500 kg vehicle from 200 km / h to a standstill , 2315 kJ of kinetic energy have to be converted. In the event of an emergency stop, the braking power is more than 200 kW.