Current Problems in Rail Vehicles
type: channel
description: Welcome to the official website of the conference with international participation Current Problems in Rail Vehicles. This traditional international conference is held every two years, alternately in Česká Třebová and Žilina. The conference is organised by the Faculty of Transport Engineering of the University of Pardubice (in cooperation with the Association of Mechanical Engineers, Czech Republic - Česká Třebová Club) and the University of Žilina (in cooperation with the Scientific and Technical Society at the University of Žilina). The aim of the conference is to acquaint the participants with new knowledge in research, development, testing, design, production, operation, maintenance and repair of rail vehicles and, of course, to establish new and maintain existing contacts between individual participants of the conference, between the academic sphere and industrial and operational practice. MAIN TOPICS OF THE CONFERENCE: design of railway rolling stock, urban rail vehicles and special vehicles, theoretical aspects of the development, design and testing of rolling stock, practical knowledge from the operation of rolling stock and its implications, issues of the vehicle/track interaction, materials and technologies used in the construction and repair of vehicles, diagnostics, maintenance and repair of rolling stock, traction, control and information systems for rolling stock. The official languages of the conference are Czech, Slovak and possibly English. The official conference proceedings will be published electronically from 2025 and are available via this website as single issues of this journal. The proceedings contain only papers that have successfully passed the peer review process. The composition of the scientific and organizing committee of the conference is specified for each individual year of the conference.
publisher: Dopravní fakulta Jana Pernera Univerzity Pardubice
language: en
publication name: Current Problems in Rail Vehicles
issn: 3029-8342
items: Increase of Traction Forces in Head of a Train above Current Limit in the Network of Správa Železnic
items: Safety Critical Components in Relation to Railway Vehicles Maintenance
items: Use of Acoustic Camera in Rolling Stock Noise Analysis
items: Influencing Factors in Performance Assessment of Solid Lubricants for the Wheel–Rail Interface
items: Wayside Diagnostic of Running Gear in Subway Vehicles Maintenance
items: Development of a Tribometer for Evaluating Adhesion on a Real Rail
items: Double Deck Push-Pull Trainsets Škoda for ČD
items: Use of AI Methods for Classification of Railway Signals Images
items: Improving Attractivity of Passenger Information Systems for Metro Passengers
items: Development Trends in Regional Railway Vehicles
items: Comparison of Advantages of Radially Adjustable Bogie with Conventional Bogie with Regard to New and Worn Transverse Profiles of Rail Head
items: Results of Measurements and Simulations of Photovoltaic Feeding of Railway Vehicles in Conditions of Czech Republic
items: Design Modification of the Measuring Unit for Detecting Temperatures and Speeds on the UIC Flywheel Test Stand
items: 24-Channel Test of Bogie Frame for EMU
items: Research of Resistance of Movement of a Four-Axle Wagon with Various Wheels Designs
items: Research to Increase Partner Protection of Tram Vehicles in the Event of an Accident with Cars
items: Functional Safety Problematics of Vehicles in Relation to the Safety Related Requirements of the Safety Integrity Level
items: Objectives of the Green Deal in the Field of Passenger Rail Transport and Their Fulfillment
items: Vehicles and Infrastructure for Emission-Free Operation on Non-Electrified Lines
items: Dynamic Behavior of Articulated Vehicle with Indirect Connection of Adjacent Sections
items: Modelling of Air Springs
items: Contribution Company Stadler to Regeneration of Rail Vehicles in Central Europe
items: An Evaluation of the Performance of Top-of-Rail Lubricants and Friction Modifiers
items: Wheel Bearings with a Long Maintenance Interval as a Response to Extending Wheel Life
items: Academic Licence of Software Tools Created for Education in the Field of Railway Vehicles at the University of Pardubice
items: Testing of Draw- and Buffing Gear Components on Dynamic Test Stand at the Faculty of Transport Engineering of the University of Pardubice
items: The Significance of Reference Scenarios to Assess Aerodynamic Effects in Railway Application
items: Motivation of Passengers to Preferences of Public Transport by Its Quality and Attractiveness
items: The Strength of Freight Wagon in the Past and Present
items: Electric Multiple Unit of Skoda 16Ev Series

Increase of Traction Forces in Head of a Train above Current Limit in the Network of Správa Železnic
type: item
description: Since the 1960s, a traction force limit at the head of the train of 350 kN has been applied on the Czech railway network. Compared to neighbouring countries, this limit is relatively low and negatively impacts freight transport efficiency. Therefore, Správa železnic initiated steps to revise relevant regulations and increase the traction force limit. One aspect addressed in cooperation with VÚKV during 2023–2024 was the interaction between vehicle and track and the running safety under traction forces exceeding 350 kN. The study began with theoretical analyses based on calculations and computer simulations of running dynamics. In the second phase, a test run was conducted with a train set capable of exceeding the current traction limit, with included an instrumented freight wagon equipped to measure key parameters (e.g., wheel forces via an instrumented wheelset and coupler forces at both ends). This paper summarizes the work carried out, key findings from the testing, and the resulting conclusions.
subject: Papers
  topic: section
subject: traction force
  topic: keywords
subject: screw coupler
  topic: keywords
subject: safety against derailment
  topic: keywords
subject: vehicle-track interaction
  topic: keywords
subject: instrumented wheelset
  topic: keywords
subject: freight transport
  topic: keywords
subject: linear regression
  topic: keywords
creator: Jan Pulda
creator: Rudolf Mrzena
creator: Tomáš Heptner
creator: Zdeněk Moureček
rights: Copyright (c) 2025 Jan Pulda, Rudolf Mrzena, Tomáš Heptner, Zdeněk Moureček https://creativecommons.org/licenses/by/4.0
date: 2025-09-17
publication date: 2025-09-17
starting page: 225
ending page: 232
doi: 10.46585/spkv20252685

Safety Critical Components in Relation to Railway Vehicles Maintenance
type: item
description: Safety critical components (SCC) are a key element of the new EU Implementing Regulation 2019/779, which defines the responsibilities of entities in charge of maintenance of all types of railway vehicles. They are essential for assessing the risks associated with the operation and maintenance of railway vehicles and which directly affect railway safety. The paper presents the current situation in Europe in this area, pointing out that a methodology for determining the SCC has not yet been established.
subject: Papers
  topic: section
subject: maintenance
  topic: keywords
subject: safety critical components
  topic: keywords
subject: EU regulation
  topic: keywords
creator: Peter Zvolenský
creator: Juraj Grenčík
creator: Miloš Brezáni
rights: Copyright (c) 2021 Peter Zvolenský, Juraj Grenčík, Miloš Brezáni
date: 2021-09-15
publication date: 2021-09-15
starting page: 409
ending page: 414

Use of Acoustic Camera in Rolling Stock Noise Analysis
type: item
description: The noise parameters of railway vehicles clearly contribute to their quality and are specifically monitored in accordance with the ever-tightening limits of TSIs or environmental regulation in general. The basis for the possibilities of reducing vehicle noise is a detailed analysis of noise sources and paths. The paper presents valuable results and new findings from acoustic experiments from the operation of trains at ŽSR using an acoustic camera.
subject: Papers
  topic: section
subject: railway vehicles noise
  topic: keywords
subject: acoustic camera
  topic: keywords
creator: Peter Zvolenský
creator: Ján Ďungel
rights: Copyright (c) 2021 Peter Zvolenský, Ján Ďungel
date: 2021-09-15
publication date: 2021-09-15
starting page: 399
ending page: 408

Influencing Factors in Performance Assessment of Solid Lubricants for the Wheel–Rail Interface
type: item
description: Flange lubrication is a tool of friction modification at the wheel–rail interface, with the purpose of reducing wear and noise occurring at the contact of the flange with the rail head side. Possible solutions include solid lubricants – lubrication sticks pressed on the wheels of rail vehicles. For comparative testing of performance of solid lubricants, the European standard EN 16028 prescribes, albeit quite loosely, a method that employs a twin-disc test machine. In these tests, the wheel–rail contact pair is represented by two steel discs rolling on each other with constant creepage, and a specimen of the lubricant is applied and removed in a defined way. The paper gives an overview of the current state and presents the experience and findings of experimental activities that took place at the Faculty of Transport Engineering in recent years, including commercial research tasks carried out for suppliers and manufacturers of solid lubricants.
subject: Papers
  topic: section
subject: flange lubrication
  topic: keywords
subject: friction modifier
  topic: keywords
subject: coefficient of friction
  topic: keywords
subject: method of testing
  topic: keywords
subject: twin-disc machine
  topic: keywords
creator: Petr Voltr
creator: Stanislava Liberová
rights: Copyright (c) 2021 Petr Voltr, Stanislava Liberová
date: 2021-09-15
publication date: 2021-09-15
starting page: 391
ending page: 398

Wayside Diagnostic of Running Gear in Subway Vehicles Maintenance
type: item
description: The introduction describes the advantages of wayside diagnostics of running railway vehicles, existing systems and the system developed within the project TAČR Wayside Diagnostics of Railway Vehicles Running Gear. The next section describes selected diagnosable disorders, the detection of which is problematic or impossible during a static inspection in the depot. In addition to the option of switching to predictive maintenance, the automatic diagnostic system also performs a safety function, as it makes it possible to detect sudden faults that occur during operation. The paper concludes with a vision of how to integrate wayside diagnostics into an existing vehicle maintenance system.
subject: Papers
  topic: section
subject: wayside diagnostic
  topic: keywords
subject: railway vehicle
  topic: keywords
subject: vehicle mantenance
  topic: keywords
creator: Jakub Vágner
creator: Petr Havlíček
creator: Stanislava Liberová
creator: Martin Kohout
rights: Copyright (c) 2021 Jakub Vágner, Petr Havlíček, Stanislava Liberová, Martin Kohout
date: 2021-09-15
publication date: 2021-09-15
starting page: 381
ending page: 389

Development of a Tribometer for Evaluating Adhesion on a Real Rail
type: item
description: One of the most important parameters, which are measured on the rail, is the coefficient of adhesion (CoA). CoA on real rail is measured by measuring locomotive or measuring carriage. These methods are quite expensive, therefore rail tribometers which are fixed or pushed are used. Developed track tribometer is mounted on a rail above the measured section. The main part of the device is a measuring module, which is dragged by a stepper along a linear guide mounted on the frame. CoA is obtained by controlling the change in traction force, which is realized by breaking the measuring wheel. During the measurement, the braking torque, forward and rotational speed are recorded. Based on these data, it is possible to plot the adhesion curve in the measured section. The paper discusses the various measuring modes of the tribometer and presents the methodology of adhesion measurement. Moreover, a series of measurements in the presence of various contaminants was performed in a laboratory.
subject: Papers
  topic: section
subject: tribometer
  topic: keywords
subject: adhesion
  topic: keywords
subject: slip
  topic: keywords
subject: top-of-rail
  topic: keywords
creator: Martin Valena
creator: Milan Omasta
creator: Radovan Galas
creator: Martin Hartl
rights: Copyright (c) 2021 Martin Valena, Milan Omasta, Radovan Galas, Martin Hartl
date: 2021-09-15
publication date: 2021-09-15
starting page: 373
ending page: 380

Double Deck Push-Pull Trainsets Škoda for ČD
type: item
description: At the beginning, paper briefly describes history of EMU and double deck push-pull trainsets produced at Škoda Vagonka (former Vagonka Studénka). Follows the description of coaches for double deck push-pull trainsets for Czech Railways (ČD). In the second half of 2021, these coaches undergo type-testing process.
subject: Papers
  topic: section
subject: trainset
  topic: keywords
subject: push-pull
  topic: keywords
subject: double deck coach
  topic: keywords
creator: Jakub Tížek
rights: Copyright (c) 2021 Jakub Tížek
date: 2021-09-15
publication date: 2021-09-15
starting page: 369
ending page: 372

Use of AI Methods for Classification of Railway Signals Images
type: item
description: The article looks into the use of artificial intelligence (AI) methods, specifically image detection and classification in railway transport. The introductory chapters describe the possibilities that AI currently offers in various fields of science and industry, followed by a description of the use of AI in the Custom Vision environment for image classification of railway track signals. In the end, there is an evaluation of the simulation of the use of AI and a consideration of the possible use in real operation.
subject: Papers
  topic: section
subject: artificial intelligence
  topic: keywords
subject: railway transport
  topic: keywords
subject: Custom vision
  topic: keywords
subject: image classification
  topic: keywords
subject: railway track signals
  topic: keywords
creator: Pavla Šmídová
creator: Stanislav Machalík
rights: Copyright (c) 2021 Pavla Šmídová, Stanislav Machalík
date: 2021-09-15
publication date: 2021-09-15
starting page: 361
ending page: 368

Improving Attractivity of Passenger Information Systems for Metro Passengers
type: item
description: Modern passenger information system for metro – PIS+, concrete project implementation. Wayfinding capabilities of transfer connections. Orientation and navigation for people with reduced mobility. Passenger flow optimalization within the metro stations. Dynamic updates from the “Train office”.
subject: Papers
  topic: section
subject: information system
  topic: keywords
subject: metro
  topic: keywords
subject: orientation
  topic: keywords
subject: navigation
  topic: keywords
subject: people with reduced mobility
  topic: keywords
creator: Petr Škramovský
rights: Copyright (c) 2021 Petr Škramovský
date: 2021-09-15
publication date: 2021-09-15
starting page: 357
ending page: 360

Development Trends in Regional Railway Vehicles
type: item
description: Stimulation of transport demand by quality of transport supply, environmental aspects and economic efficiency of regional passenger railway transport. High cruising speed as an indicator of the quality of regional transport and as a necessary condition for the running of regional trains in parallel with long-distance passenger trains as well as fast freight trains on heavily used railway main lines. Traction and braking parameters of EMU as a tool to increase cruising speed. Energy management of regional trains. Management of reducing the specific weight of vehicles for regional passenger transport.
subject: Papers
  topic: section
subject: regional trains
  topic: keywords
subject: efficiency
  topic: keywords
subject: speed
  topic: keywords
subject: comfort
  topic: keywords
creator: Radek Šindel
rights: Copyright (c) 2021 Radek Šindel
date: 2021-09-15
publication date: 2021-09-15
starting page: 345
ending page: 355

Comparison of Advantages of Radially Adjustable Bogie with Conventional Bogie with Regard to New and Worn Transverse Profiles of Rail Head
type: item
description: The article focuses on a comparison of running characteristics of rail freight bogies when negotiating curves of small radiuses. The conventional bogie Y25 and the bogie with radially adjustable wheelsets TVP-NG2 are compared. Emphasis was placed on effect of used rail head profile and also on rail head wear effect upon running and operational characteristics of the bogies.
subject: Papers
  topic: section
subject: radially adjustable bogie
  topic: keywords
subject: rail profile
  topic: keywords
subject: curves of small radiuses
  topic: keywords
subject: transverse wheel forces
  topic: keywords
creator: Daniel Šimšaj
creator: Marián Moravčík
creator: Michal Lacko
rights: Copyright (c) 2021 Daniel Šimšaj, Marián Moravčík, Michal Lacko
date: 2021-09-15
publication date: 2021-09-15
starting page: 337
ending page: 344

Results of Measurements and Simulations of Photovoltaic Feeding of Railway Vehicles in Conditions of Czech Republic
type: item
description: The first part of this paper describes measurements done on experimental vehicle of Faculty of Transport Engineering – these measurements were used for determination of conversion efficiency of sunshine into electric energy through photovoltaic panels mounted directly on the roof of the vehicle. Next part is focused on statistical processing of data about sunshine from four meteorological stations in Czech Republic. In the last part of this paper are presented simulations results of the drive of the two-source electric motor unit done according to counted efficiency of energy change and statistical data of sunshine. These simulations were done for railway tracks in Czech Republic, real energy impact of photovoltaic panels on the roof of unit was assessed.
subject: Papers
  topic: section
subject: experimental vehicle
  topic: keywords
subject: measurement
  topic: keywords
subject: photovoltaic panels
  topic: keywords
subject: efficiency
  topic: keywords
subject: simulation
  topic: keywords
creator: Petr Sýkora
creator: Zdeněk Mašek
rights: Copyright (c) 2021 Petr Sýkora, Zdeněk Mašek
date: 2021-09-15
publication date: 2021-09-15
starting page: 333
ending page: 336

Design Modification of the Measuring Unit for Detecting Temperatures and Speeds on the UIC Flywheel Test Stand
type: item
description: The article deals with the design of the measuring unit used to determine the temperatures and speeds, which is used on the flywheel state of the UIC. The measurement of the speed of a railway wheel or a brake disc can be performed by two independent measuring methods. One of the methods proved ineffective. Therefore, it was necessary to make a structural modification to the connection of the ring head, which is used for measuring temperatures by means of thermocouples, in order to be able to connect a speed sensor to it in series.
subject: Papers
  topic: section
subject: break test stand
  topic: keywords
subject: temperature
  topic: keywords
subject: speed
  topic: keywords
creator: Andrej Suchánek
creator: Jozef Harušinec
creator: Pavol Šťastniak
rights: Copyright (c) 2021 Andrej Suchánek, Jozef Harušinec, Pavol Šťastniak
date: 2021-09-15
publication date: 2021-09-15
starting page: 323
ending page: 331

24-Channel Test of Bogie Frame for EMU
type: item
description: The article is approaching and describing the implementation of static and fatigue test of the bogie frame for motor bogie frame for EMU (Electric Multiple Unit) based on ČSN EN 13749:2011. 24 hydraulic linear actuators (cylinders) were used for tests and were controlled by computer in real time together.
subject: Papers
  topic: section
subject: static and fatigue tests
  topic: keywords
subject: bogie frame
  topic: keywords
subject: hydraulic actuator
  topic: keywords
creator: Jiří Soukup
creator: Radek Stuchlík
rights: Copyright (c) 2021 Jiří Soukup, Radek Stuchlík
date: 2021-09-15
publication date: 2021-09-15
starting page: 315
ending page: 321

Research of Resistance of Movement of a Four-Axle Wagon with Various Wheels Designs
type: item
description: The article contains description of a mathematical model of the movement of a four-axle freight wagon on a rail track. With the help of mathematical modelling, studies of the running resistance of a wagon with wheels of various design schemes have been carried out. There are compared two wheel designs, namely the design of a traditional wheel with a monolithic production tread surface and the flange and the perspective wheel design, which allows independent rotating of support surface of the wheel and of its guiding surface, i.e. of its flange. Potential advantages of using the wheels of a perspective design scheme in a bogie of a wagon are revealed, which consist in reducing its resistance of movement.
subject: Papers
  topic: section
subject: wagon
  topic: keywords
subject: wheel
  topic: keywords
subject: flange
  topic: keywords
subject: mathematical modelling
  topic: keywords
subject: resistance of movement
  topic: keywords
creator: Stanislav Semenov
creator: Evgeni Mikhailov
creator: Ján Dižo
creator: Miroslav Blatnický
rights: Copyright (c) 2021 Stanislav Semenov, Evgeni Mikhailov, Ján Dižo, Miroslav Blatnický
date: 2021-09-15
publication date: 2021-09-15
starting page: 303
ending page: 314

Research to Increase Partner Protection of Tram Vehicles in the Event of an Accident with Cars
type: item
description: From a social point of view, there is a growing demand to increase traffic safety and reduce the consequences of tram and cars accidents. The research to increase the safety of trams, which is carried out at the Czech Technical University in Prague, aims to increase the active and passive safety of trams. Components and systems of active safety are design to reduce the risk of an accident. Components and systems of passive safety are design to minimize the consequences of accidents. One of the elements of passive safety is the partner protection (vehicle compatibility in the accident), which means an approach where the effort is to protect passengers inside and outside the vehicle. The article describes the conclusions from the partial research work on increasing the partner protection of trams in the event of an accident with cars.
subject: Papers
  topic: section
subject: tram
  topic: keywords
subject: accident
  topic: keywords
subject: passive safety
  topic: keywords
subject: FEM models
  topic: keywords
creator: Jakub Seidl
rights: Copyright (c) 2021 Jakub Seidl
date: 2021-09-15
publication date: 2021-09-15
starting page: 295
ending page: 302

Functional Safety Problematics of Vehicles in Relation to the Safety Related Requirements of the Safety Integrity Level
type: item
description: The article deals with current aspects of a significant part of the field of reliability, namely the issue of functional safety of railway vehicles in relation to the safety related requirements and system hardware architecture. This area is of course governed by a number of standards, but in this area and the application level, especially the standards EN 61508 and EN 50129. The fundamental steps related to the approval of vehicles and their components in terms of functional safety in this article have been described. Furthermore, the work with hardware architectures in connection to the safety related requirements of the safety integrity level SIL has been shown.
subject: Papers
  topic: section
subject: functional safety
  topic: keywords
subject: railway vehicles
  topic: keywords
subject: reliability
  topic: keywords
subject: hardware architectures
  topic: keywords
creator: Michal Richtář
creator: Jan Famfulík
creator: Jaromír Široký
creator: Jakub Šmiraus
creator: Jana Míková
rights: Copyright (c) 2021 Michal Richtář, Jan Famfulík, Jaromír Široký, Jakub Šmiraus, Jana Míková
date: 2021-09-15
publication date: 2021-09-15
starting page: 287
ending page: 294

Objectives of the Green Deal in the Field of Passenger Rail Transport and Their Fulfillment
type: item
description: The text deals with the effects of climate change in the field of passenger rail transport and describes the basic challenges in the transformation of passenger transport in the near future. The EU's emphasis on emission-free passenger transport offers great potential for the development of passenger rail transport, so the text describes the most important trends in the development of vehicles and their optimal use in the coming decades.
subject: Papers
  topic: section
subject: Green Deal
  topic: keywords
subject: emission-free transport
  topic: keywords
subject: future of the passenger transport
  topic: keywords
creator: Roman Prell
rights: Copyright (c) 2021 Roman Prell
date: 2021-09-15
publication date: 2021-09-15
starting page: 277
ending page: 286

Vehicles and Infrastructure for Emission-Free Operation on Non-Electrified Lines
type: item
description: The transition of the Czech railways to fully emission-free operation is an objective necessity. And not only to save energy and emissions, but also to increase the efficiency and effectiveness of rail transport. It appears reasonable to do this by combining line and battery power to the vehicles. The renewal of the vehicle fleet needs to be coordinated with the development on the railway infrastructure side. With the conversion of track power supply from 3 kV to 25 kV, the development of line and point electrification and the introduction of ETCS on lines and vehicles.
subject: Papers
  topic: section
subject: electrification
  topic: keywords
subject: hybrid vehicles
  topic: keywords
subject: zero emission operation
  topic: keywords
subject: hydrogen
  topic: keywords
creator: Jiří Pohl
rights: Copyright (c) 2021 Jiří Pohl
date: 2021-09-15
publication date: 2021-09-15
starting page: 257
ending page: 276

Dynamic Behavior of Articulated Vehicle with Indirect Connection of Adjacent Sections
type: item
description: In this article are described partial results of analysis of the dynamic behaviour of two-section coach with common 3-axle bogie. The analysis is focused on running stability at higher speeds, compatibility with bridges, lateral dynamics in curve transition and forces caused in wheel–rail contact.
subject: Papers
  topic: section
subject: D-DART
  topic: keywords
subject: common 3-axle bogie
  topic: keywords
subject: indirect articulation
  topic: keywords
subject: dynamic behaviour
  topic: keywords
subject: running stability
  topic: keywords
subject: comfort in curve transition
  topic: keywords
subject: bridge compatibility
  topic: keywords
creator: Jan Plomer
creator: Josef Kolář
rights: Copyright (c) 2021 Jan Plomer, Josef Kolář
date: 2021-09-15
publication date: 2021-09-15
starting page: 249
ending page: 255

Modelling of Air Springs
type: item
description: The article deals with the issue of modelling air springs for use in multibody simulations. The reliability of the results of simulations fully depends on the correct parameter settings in simulation models. To set simulation models of air springs it is necessary to take into account mainly the parameters that determine their dynamic behaviour. In order to measure the dynamic properties of air springs, a test bench was designed and built in VÚKV. The introduction and the description of the test bench are parts of this article. The end of the article deals with the implementation of measured data into the simulation model of air spring and its validation.
subject: Papers
  topic: section
subject: air spring
  topic: keywords
subject: multibody simulation
  topic: keywords
subject: simulation model
  topic: keywords
subject: rail vehicles
  topic: keywords
subject: dynamic characteristics
  topic: keywords
subject: vertical direction
  topic: keywords
subject: test bench
  topic: keywords
subject: additional air reservoir
  topic: keywords
subject: orifice
  topic: keywords
subject: surge pipe
  topic: keywords
subject: measurement
  topic: keywords
creator: Jan Pejša
rights: Copyright (c) 2021 Jan Pejša
date: 2021-09-15
publication date: 2021-09-15
starting page: 241
ending page: 248

Contribution Company Stadler to Regeneration of Rail Vehicles in Central Europe
type: item
description: Introduction of the Stadler Rail company, inclusion of the Stadler Prague engineering office within the Stadler Rail group and information about implemented projects in Central European countries. A more detailed presentation of individual implemented projects of new rolling stock, information on interesting facts or specific individual projects, which were completely or at least partially processed in Stadler Prague.
subject: Papers
  topic: section
subject: new rail vehicles
  topic: keywords
subject: electric multiple units
  topic: keywords
subject: trams
  topic: keywords
subject: Central European Countries
  topic: keywords
creator: Tomáš Oppolzer
rights: Copyright (c) 2021 Tomáš Oppolzer
date: 2021-09-15
publication date: 2021-09-15
starting page: 233
ending page: 239

An Evaluation of the Performance of Top-of-Rail Lubricants and Friction Modifiers
type: item
description: A relatively new trend in the management of the friction between the wheel and rail is the application of so-called friction modifiers or lubricants on top of the rail in order to optimise coefficient of adhesion. The aim of this paper is to present this issue and to demonstrate the possibilities of laboratory evaluation of performance parameters of top-of-rail lubricants and friction modifiers. Important implications for the prescription of their application are discussed.
subject: Papers
  topic: section
subject: friction modification
  topic: keywords
subject: lubrication
  topic: keywords
subject: top of the rail
  topic: keywords
subject: coefficient of adhesion
  topic: keywords
creator: Milan Omasta
creator: Radovan Galas
creator: Martin Valena
creator: Martin Hartl
rights: Copyright (c) 2021 Milan Omasta, Radovan Galas, Martin Valena, Martin Hartl
date: 2021-09-15
publication date: 2021-09-15
starting page: 225
ending page: 232

Wheel Bearings with a Long Maintenance Interval as a Response to Extending Wheel Life
type: item
description: Railway bearings and wheels are very important components of a railway vehicle that is subject to relatively rapid wear, which requires maintenance. The operators of rolling stock focus on the reduction of maintenance cost and call for extending of maintenance interval. The extension of maintenance interval reduces the service cost but in other hand it creates the risk of bearing damage and wheel wear. This trend increases requirements on the wheel material and also on the complete bearing arrangement. The internal design of bearing must be modified and online condition monitoring of bearing behaviour during train operation is required as well. The paper is focusing on the importance of bearing and wheel maintenance planning and their harmonization.
subject: Papers
  topic: section
subject: wheel bearing
  topic: keywords
subject: railway wheel
  topic: keywords
subject: maintenance interval
  topic: keywords
subject: online condition monitoring
  topic: keywords
creator: Ondřej Novotný
creator: Jan Babka
rights: Copyright (c) 2021 Ondřej Novotný, Jan Babka
date: 2021-09-15
publication date: 2021-09-15
starting page: 219
ending page: 224

Academic Licence of Software Tools Created for Education in the Field of Railway Vehicles at the University of Pardubice
type: item
description: A couple of software tools for use in the educational process in the field of railway vehicles are presented in this paper. Both of them were created as an academic licence at the Faculty of Transport Engineering of the University of Pardubice (Czech Republic). In the first case, the simulation tool “SJKV-V4N v. 1.0” was created in framework of the project “Competence Center of Railway Vehicles” of the Technology Agency of the Czech Republic in 2018. This software represents a particular version of the multi-body simulation tool “SJKV”, which was supplemented with a user interface, and nowadays it is available for non-commercial use by the students and academic staff for free. It is intended for realization of multi-body simulations of three pre-defined design concepts of four-axle railway vehicles under certain conditions. The second software tool – named as “RailCalc 2.0” – is intended for traction calculations, i.e., for the calculations of running times and energy consumption of defined trains on defined railway lines. This software represents a modified version of the program “RailCalc” created in framework of a bachelor thesis at the Faculty of Transport Engineering in 2020.
subject: Papers
  topic: section
subject: railway vehicles
  topic: keywords
subject: multi-body simulation
  topic: keywords
subject: traction calculation
  topic: keywords
subject: software
  topic: keywords
subject: SJKV
  topic: keywords
subject: RailCalc
  topic: keywords
creator: Tomáš Michálek
creator: Jaromír Zelenka
creator: Zdeněk Fišr
rights: Copyright (c) 2021 Tomáš Michálek, Jaromír Zelenka, Zdeněk Fišr
date: 2021-09-15
publication date: 2021-09-15
starting page: 207
ending page: 217

Testing of Draw- and Buffing Gear Components on Dynamic Test Stand at the Faculty of Transport Engineering of the University of Pardubice
type: item
description: This contribution deals with tests of components of draw- and buffing gear of railway vehicles realized at the Faculty of Transport Engineering of the University of Pardubice, especially in framework of student’s projects and theses. In the beginning, the attention is paid to the tests of dynamic characteristics of elastomer suspension components of draw gears and buffers. The tests were performed in order to create a mathematical model of these components for application in multi-body simulations for investigation of longitudinal train dynamics effects, because a description of these components only by their static characteristics seems to be insufficient in certain situations. Besides to that, a preparation of tensometric screw coupling for measurement of traction forces is introduced in the paper. This measuring device will be applied especially in further research of running resistance of railway vehicles as well as at the experimental verification of results of the longitudinal train dynamics simulations.
subject: Papers
  topic: section
subject: railway vehicle
  topic: keywords
subject: buffer
  topic: keywords
subject: draw gear
  topic: keywords
subject: screw coupling
  topic: keywords
subject: elastomer spring
  topic: keywords
subject: characteristics
  topic: keywords
subject: dynamic test stand
  topic: keywords
subject: longitudinal train dynamics
  topic: keywords
subject: multi-body simulation
  topic: keywords
subject: train running resistance
  topic: keywords
creator: Tomáš Michálek
creator: Pavel Jaroš
creator: Jakub Vágner
creator: Martin Kohout
creator: Jiří Šlapák
creator: Jan Pulda
creator: Adam Bílek
creator: Libor Výmola
creator: Martin Staněk
rights: Copyright (c) 2021 Tomáš Michálek, Pavel Jaroš, Jakub Vágner, Martin Kohout, Jiří Šlapák, Jan Pulda, Adam Bílek, Libor Výmola, Martin Staněk
date: 2021-09-15
publication date: 2021-09-15
starting page: 199
ending page: 206

The Significance of Reference Scenarios to Assess Aerodynamic Effects in Railway Application
type: item
description: The aerodynamics in railway application is a typical example of the topic that occurs on the interface between vehicles and infrastructure while both systems affect each other. The magnitude of effects is also determined by surrounding environment that represents atmospheric conditions or specific operational situations. During the analysis of aerodynamic effects, it requires a definition of reference conditions or scenarios to which the results are referred and in which context they are further compared or assessed. In experiment it is important to correct or transform measured data into this reference state. The article briefly describes examples of reference vehicles and infrastructure that are used in the assessment of aerodynamic effects on open track or in tunnel. There are shown reference scenarios relating to some aerodynamic topics, there is emphasized on specific questions in their application and shown examples of boundary conditions influence on the magnitude of some effects.
subject: Papers
  topic: section
subject: aerodynamics
  topic: keywords
subject: reference scenario
  topic: keywords
subject: open track
  topic: keywords
subject: cross wind
  topic: keywords
subject: tunnels
  topic: keywords
subject: railway vehicles
  topic: keywords
subject: railway infrastructure
  topic: keywords
creator: Emanuel Mergl
rights: Copyright (c) 2021 Emanuel Mergl
date: 2021-09-15
publication date: 2021-09-15
starting page: 191
ending page: 198

Motivation of Passengers to Preferences of Public Transport by Its Quality and Attractiveness
type: item
description: Definition of travel comfort. Rational and emotional relationships of passengers to transport systems and transportation. Harmony of public transport with emotions of a passenger. Emotional perception of a vehicle aesthetics, ergonomics of technical solution and transport process. Anthropological development of a human in the 20th and 21st century. Space and its perception by passengers, spatial requirements of seating. Systematic approach to minimizing the effects of vibration, noise, heat, light and indoor air quality on the comfort of the train occupant. Positive perception of public transport as a basic factor for exploiting a potential of extra-modal energy savings in replacing individual car transport with less energy-intensive and emission-free rail transport.
subject: Papers
  topic: section
subject: emotions
  topic: keywords
subject: public transport
  topic: keywords
subject: perception
  topic: keywords
subject: aesthetics
  topic: keywords
subject: transport process
  topic: keywords
subject: human anthropological development
  topic: keywords
subject: spatial requirements
  topic: keywords
subject: travel comfort
  topic: keywords
subject: extra-modal savings
  topic: keywords
subject: emission-free railways
  topic: keywords
creator: Lukáš Málek
rights: Copyright (c) 2021 Lukáš Málek
date: 2021-09-15
publication date: 2021-09-15
starting page: 179
ending page: 189

The Strength of Freight Wagon in the Past and Present
type: item
description: The paper deals with the issue of dimensioning of railway freight wagon car bodies. The current state of regulations and their real application is analysed. The requirements in the regulations are confronted with the knowledge gained during tests and assessment of an operational strength failures of freight wagon. Suggestions for changing of existing standards are given.
subject: Papers
  topic: section
subject: freight car
  topic: keywords
subject: sizing requirements
  topic: keywords
subject: fatigue failures
  topic: keywords
subject: regulations
  topic: keywords
creator: Zdeněk Malkovský
rights: Copyright (c) 2021 Zdeněk Malkovský
date: 2021-09-15
publication date: 2021-09-15
starting page: 171
ending page: 177

Electric Multiple Unit of Skoda 16Ev Series
type: item
description: The contribution deals with the description of the electric unit type 16Ev from the production of ŠKODA TRANSPORTATION a.s. / ŠKODA VAGONKA a.s. The electric multiple unit will be put into operation on wide gauge lines in Latvia. The train will be operated by the Latvian Railways (Pasažieru vilciens).
subject: Papers
  topic: section
subject: electric multiple unit
  topic: keywords
subject: EMU
  topic: keywords
subject: Škoda 16Ev
  topic: keywords
subject: Latvian railways (PV)
  topic: keywords
creator: Miroslav Kundrata
rights: Copyright (c) 2021 Miroslav Kundrata
date: 2021-09-15
publication date: 2021-09-15
starting page: 163
ending page: 169