To the issue of power regeneration in motor vehicles

The work indicates the relevance of the issues related to accumulation and storing energy in ecological terms. The analysis of the different variants of energy storage, including mechanical is performed. Batteries of kinetic energy (flywheels) with composite materials can be one of the promising options. The use of composite materials allows to significantly reduce the weight of the battery design kinetic energy and enhance the safety of its operation to turn the design of such flywheels will have its own peculiarities in the operation. During the accelerating tests of rotor models of flywheels the real value of the limiting energies that can accumulate in a variety of sizes, models the rotors are installed. On the basis of the performed tests also disadvantages of constructive solutions in models that were tested are defined. Discusses the use of new materials for creation of advanced designs rotors of flywheels with the aim of their practical use in creating designs of hybrid engines for AFR.