Mechatronic Systems for Kinetic Energy Recovery at the Braking of Motor Vehicles

From the Kinetic Energy Recovery System to the Thermo-Hydraulic Hybrid Motor Vehicle

“…In the braking phases, the kinetic energy of the motor vehicle is converted into hydrostatic energy, which is stored at high pressure in hydropneumatic accumulators by one hydraulic machine, which works as a pump or as a motor. In the acceleration/start-up stages, the hydrostatic energy, stored in hydro-pneumatic accumulators in the braking phases, is converted back into mechanical energy by the hydraulic machine that is working now as a hydraulic motor and which will generate the acceleration of the motor vehicle [3].…”

“…The hybrid motor vehicles with kinetic energy recovery system have a typical mechatronics structure [2], [3], consisting of the next three main subsystems: 1. mechanical-hydraulic subsystem, which consists of hydro-mechanical module, hydraulic station, battery of hydro pneumatic accumulators, 2. electronic drive and control subsystem, which consists of all electric, electronic, sensors and automation components that ensure system operation, including the drive and control panel; 3. informatics/ computer subsystem for process control, consisting of user licensed purchased software or software specifically designed and dedicated to the proper functioning.…”

“…For the conceiving of the recovery system and, also, for the testing stand, was used the new mechatronics technology, the single technology which is able to manage this very complex system. The kinetic energy recovery system contains the next main subsystem: a hydro-mechanic subsystem, an electronics subsystem, an informatics subsystem and, also, a control subsystem [3] The propulsion systems that have in their composition, in addition to a conventional internal combustion engine, at least one capable of providing torque to the wheels traction vehicles and recover some of the kinetic energy, are known as hybrid regenerative systems [4], [5]. This is a new automotive technology, which successes a substantial reducing of fuel consumption and gas emissions.…”