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  5. Increasing the accuracy of the electron-pneumatic mechanism control of the clutch of vehicles of categories N3 and M3 by using the serial arrangement of electron-pneumatic valves

Increasing the accuracy of the electron-pneumatic mechanism control of the clutch of vehicles of categories N3 and M3 by using the serial arrangement of electron-pneumatic valves

M. Mykhalevych, V. Bogomolov, V. Klimenko, O. Yaryta, D. Leontev, Yu. Ryabukha
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Description: The new principle of pressure control in the power cylinder of the clutch control mechanism is proposed. The principal and calculation schemes vehicle's clutch control mechanism, where the serial arrangement of the valves is applied, are considered. Emphasized advantages over existing analogues. For example, compared to the scheme with four valves, the design is simplified, compared to the scheme with an accelerator valve, improved reliability especially in the winter. The total number of the valves in the clutch control mechanism is three, one inlet valve and one outlet valve installed in parallel to provide a three-position regulation and one electropneumatic valve is arranged successively to the first two valves to provide a higher accuracy of the positioning of the clutch control system. The mathematical model of the electropneumatic valve and the results of modeling application of shift of control pulses each of two serial operating valves are presented. The results of mathematical modeling of the proposed clutch control mechanism in the different modes of operation are presented and their estimation is given. It is determined that in comparison with synchronous operation of two serially installed valves, the shift of control pulses in time allows to increase the accuracy of work more than ten times. Control of the process of pressure change is possible as a change in the value of the shift between control impulses as and the change their frequency of control pulses.


Keywords: serial arrangement of electropneumatic valves, clutch control mechanism, open state of the air supply channel, shift in the work of electropneumatic valves

Reference:
Mykhalevych, M.H., Bohomolov, V.O., Klymenko, V.I., Yaryta, O.O., Leontiev, D.M. and Riabukha, Yu.O. (2018), “Pidvyshchennia tochnosti roboty elektropnevmatychnoho mekhanizmu keruvannia zcheplenniam transportnykh zasobiv katehorii N3 ta M3 shliakhom vykorystannia poslidovnoho roztashuvannia elektropnevmatychnykh klapaniv” [Increasing the accuracy of the electron-pneumatic mechanism control of the clutch of vehicles of categories N3 and M3 by using the serial arrangement of electron-pneumatic valves], Science and Technology of the Air Force of Ukraine, No. 1(30), pp. 130-137. https://doi.org/10.30748/nitps.2018.30.18.