Abstract: The generator automotive-braking energy recovery system can only be applied to the new energy vehicles. In order to improve the situation, a kind of flywheel automotive-braking energy recovery system (FAERS) was proposed that could be applied to the traditional vehicles. The structure of the FAERS was designed and its working principle was explained in detail. The working principle of the FAERS and the main structural parameters—the maximum torque of the electromagnetic clutch, the transmission ratio of the energy storage flywheel and the rotational inertia of the energy storage flywheel were simulated in the environment of Matlab-Simulink, which greatly effected the system’s efficiency. The simulation results show that 10%-14% of the braking energy can be effectively recycled in the working condition of NEDC. This research results can provide a reference for development and application of the FAERS.

Key words: energy storage flywheel, automotive-brake energy recovery, electromagnetic clutch, energy recovery efficiency