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Registration Number

0222U003266, 0119U002618 , R & D reports

Title

Improvement of dynamic performance and smooth movement of vehicles

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Head

Lyubarsky Boris H, Доктор технічних наук

Registration Date

22-02-2022

Organization

National Technical University "Kharkiv Polytechnic Institute"

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 The object of study - the dynamic performance and smoothness of vehicles. The purpose of the work is to improve the smoothness of vehicles by using in their suspensions air springs with increased damping through the use of electrodynamic dampers. Research methods - mathematical modeling of the processes of damping the oscillations of vehicles when driving on a track with irregularities, processing and analysis of the results.The design of a pneumatic spring with increased damping has been developed, in which the process of converting the energy of oscillations into the kinetic energy of the compressed air flow flowing between the pneumatic spring and the additional tank takes place. This flow energy is converted into mechanical energy by a bidirectional turbine that rotates an electric generator, which converts it into electrical energy that is fed to a resistor, where it is converted into heat and dissipated into the environment. This method of subtracting energy from compressed air (elastic element of the pneumatic spring) is interpreted as the damping of oscillations. Its efficiency is established by mathematical modeling of vibration energy conversion (damping). The assessment was performed by comparing the damping coefficients (resistance indicators) of the developed air suspension with its analogue, which is equipped with a throttle system for damping vibrations. It is established that the damping coefficient (resistance index) of the proposed suspension has increased in comparison with the air suspension with throttle damping in 32000/26000 = 1.23 times. This allowed to approach the level of damping coefficients (resistance parameters) of hydraulic vibration dampers UG190.32.32 (for passenger cars), which are in the range from 24,000 to 42,000 kg / s [14]. According to the results of theoretical research, the initial data for the calculation of the turbo-generator, which converts the energy of air flow into electrical energy, and its main parameters are dete

Product Description

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Liubarskyi Borys H
Masliev Vjacheslav H

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2022-03-09