Quantitative assessment of maximum pressures in the brake cylinder depending on the axial load of a freight carriage under the condition of non-slip braking
https://doi.org/10.46973/0201-727X_2025_4_168
Abstract
This article presents a comprehensive study devoted to substantiating the permissible pressure in a freight car brake cylinder depending on the axle load, taking into account the prevention of wheelset skidding during braking. Three methodological options for determining the maximum pressure are considered, differing in their approaches to accounting for the influence of travel speed on the calculated values of the wheel-rail adhesion coefficient and the friction coefficient of composite brake shoes. Particular attention is paid to the influence of the bogie unloading factor on the adhesion reserve. A comparative assessment shows that the approach that simultaneously considers the adhesion coefficient and friction coefficient provides the best balance between braking safety, resistance to skidding, and train control efficiency under real operating conditions.
About the Authors
V. A. Karpichev
Russian University of Transport (MIIT)
Russian Federation
Russian Federation
Karpichev Vladimir Aleksandrovich, Chair “Mechanical Engineering, Design, Standardization and Certification”, Doctor of Engineering Sciences, Associate Professor, Head of the Chair
A. V. Strakhova
Russian University of Transport (MIIT)
Russian Federation
Russian Federation
Strakhova Arina Vladimirovna, Chair «Mechanical Engineering, Design, Standardization and Certification», Assistant
S. A. Egorenkova
Center for Non-Destructive Testing and Technical Diagnostics
of the Design Bureau of JSC «VNIIZhT»
Russian Federation
Russian Federation
Egorenkova Sofya Alekseevna, Specialist
References
1. Karpichev, V. A. Determination of the boundary characteristics of the automatic braking system of a freight car based on the condition of nonslip braking / V. A. Karpichev, A. B. Bolotina, A. V. Strakhova // Vestnik Rostovskogo Gosudarstvennogo Universiteta Putej Soobshcheniya. – 2024. – No. 1 (93). – P. 8–14. – DOI 10.46973/0201-727Х.
2. GOST 34434-2018. Brake systems of freight railway cars. Technical requirements and calculation rules ; introduced on 01.08.2019. – Moscow : Standartinform, 2018. – 31 p.
3. Rules for traction calculations for train operation. – Moscow : Transport, 1985. – 287 p.
Review
For citations:
Karpichev V.A., Strakhova A.V., Egorenkova S.A. Quantitative assessment of maximum pressures in the brake cylinder depending on the axial load of a freight carriage under the condition of non-slip braking. Vestnik Rostovskogo Gosudarstvennogo Universiteta Putej Soobshcheniya. 2025;(4):168-178. (In Russ.) https://doi.org/10.46973/0201-727X_2025_4_168
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