Baulina

pp. 242-255

The article conducts a reasoning analysis for using a gearbox in electric motor vehicles, in particular in vehicles with hybrid powertrain. It presents external high-speed characteristics of internal combustion (IC) engines in vehicles with hybrid powertrain engines and electric motors that can be set in vehicles with hybrid powertrain, which are used to compare characteristics of horsepower balance and accelerations of these vehicles both with IC engine and gearbox and with electric motor. To prove the need of a gearbox application, both in the electric vehicle, and in the in vehicle with hybrid powertrain, comparative diagrams of accelerations and power balance of the vehicle with electric motor without a gearbox and with electric motor in combination with the 2-, 3-, 4-staged gearboxes are provided.

In this article the authors analyze various energy recovery systems of hybrid vehicles. Conclusions on inadequacy of existing technical solutions were drawn. The article also describes principles of selecting an energy recovery device that meets the performance level requirements of a hybrid vehicle. The authors describe the construction of an experimental vehicle with a hybrid powertrain. They also developed an algorithm of the operation of a vehicle with a hybrid powertrain during its movement in the urban cycle, which takes power balance in the drive into account. Results of the experimental research of a vehicle confirmed existence of limitations associated with a mounted energy storage device and electrical components. In addition, requirements for an "ideal" battery were specified.