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  • Transport Problems

 

Research Article

COMPRESSED AIR QUALITY INCREASE FOR ROLLING STOCK PNEUMATIC SYSTEMS BASED ON ENERGY EFFICIENCY

The energy efficiency increase problem for railway rolling stock pneumatic systems compressed air preparation is directly connected with its purification and drying technology choice. In the presented materials in the article, the authors find a solution to the problem based on realization analysis of different factors that affect compressed air quality, purification and drying technology choice, as well as based on energy efficiency analysis. To realize the energy-saving events at railway

Tatiana RIPOL-SARAGOSI, Leonid RIPOL-SARAGOSI, Igor SMYCHOK

Transport Problems , ISSUE 4, 13–21

Article

NOISE CONTROL OF THE BEGINNING AND DEVELOPMENT DYNAMICS OF FAULTS IN THE RUNNING GEAR OF THE ROLLING STOCK

In contrast to traditional systems for monitoring fault of the running gear of the rolling stock, this paper proposes a technology of noise control at the onset of defects. The authors consider the possibility of creating an intelligent system that can perform noise diagnostics with the indication of the beginning of the latent period of the initiation of typical defects preceding faults. To this end, using the noise technology, sets of reference informative attributes are created in the

Telman ALIEV, Tofig BABAYEV, Tahir ALIZADA, Narmin RZAYEVA

Transport Problems , ISSUE 2, 83–91

Research Article

Investigation on features and tendencies of axle-box heating

Breakdown of rolling stock axle-boxes if not detected in due time may cause a rail accident or disaster. At present, a lot of advanced technologies, modern equipment and devices, which “recognizes” faulty axle-boxes when the train is in motion, have been implemented. However, the timely identification of breakdown of rolling stock axle-boxes still is an acute problem, the initial stage of damage emergence being especially problematic. Presently, rolling stock axle-box breakdown is determined

Olegas LUNYS, Stasys DAILYDKA, Gintautas BUREIKA

Transport Problems , ISSUE 1, 105–114

Article

MODEL OF THE MAINTENANCE AND REPAIR SYSTEM IN SERVICE MAINTENANCE MANAGEMENT

The model of service maintenance and repair of passenger rolling stock is considered as a multi-channel system. The presented model is implemented on the queuing model basis. The service maintenance and passenger rolling stock system stipulates not only for the transition to a new level of the maintenance system as a type of activity but as a means boosting up the economic growth rate and living standards. As a result, we managed to resolve the problem of the optimum design for the service

Dmitry BANNIKOV, Nina SIRINA, Alexander SMOLYANINOV

Transport Problems , ISSUE 3, 5–14

Article

SELF-DIAGNOSIS METHOD FOR CHECKING THE WAYSIDE SYSTEMS FOR WHEEL-RAIL VERTICAL LOAD MEASUREMENT

Nowadays, wayside measurement systems of wheel-rail contact forces have acquired great relevance for the monitoring of rolling stock, especially for freight trains. Thanks to these solutions, infrastructure managers can check and monitor the status of rolling stock and, when necessary, impose corrective actions for the railway companies. On the other hand, the evaluation of contact forces is part of the rolling stock authorisation process [1] and a mainstone for the study of the running

Daniele CORTIS, Stefano GIULIANELLI, Gabriele MALAVASI, Stefano ROSSI

Transport Problems , ISSUE 4, 91–100

Research Article

OPTIMUM DISTRIBUTION OF REPAIRS IN ТS-8 OF ELECTRIC LOCOMOTIVES VL80С BETWEEN REPAIR DEPOTS IN THE REPUBLIC OF KAZAKHSTAN

The article presents the solution for the problem of optimal distribution of electric locomotives in repair enterprises for carrying out repairs in the frame of technical service - 8 (ТS-8) and increased technical service - 8 (ITS-8). The aim of the study is to improve the efficacy of a rolling stock with a simultaneous decrease in the total expenses connected with the repair of locomotives and their transportation in repair enterprises. This is possible due to a reduction in the requirement

Seidulla ABDULLAYEV, Janat MUSAYEV, Temyrbay CHIGAMBAEV, Saken MALYBAYEV, Gabit BAKYT, Assylbek TOILYBAYEV

Transport Problems , ISSUE 2, 19–29

Research Article

PROVIDING STABLE FRICTION PROPERTIES OF DISC BRAKES FOR RAILWAY VEHICLES

Yuri Y. OSENIN, Douma Mansur AL-MAKHDI, Oksana SERGIENKО, Igor SOSNOV, Aleksei CHESNOKOV

Transport Problems , ISSUE 1, 63–71

Research Article

RESEARCH OF IMPACT OF THE LOADING ON ENDURANCE OF THE FREIGHT LOCOMOTIVE ENGINES

The publication reflects the research results of the rationalization of the rolling stock use of JSC LG Lithuanian railways to increase the reliability indicators of the freight diesel locomotive exploitation reliability. The comparative evaluation of the exploited freight diesel locomotive work duration, according to the technical documentation, by using comparative test results and indirect diesel reliability criteria approved in practice. An algorithm of work duration forecasting methodology

Sergejus LEBEDEVAS, Galina LEBEDEVA, Stasys DAILYDKA, Gediminas VAIČIŪNAS

Transport Problems , ISSUE 4, 45–55

Research Article

IMPROVING THE METHODS OF ESTIMATION OF THE UNIT TRAIN EFFECTIVENESS

calculation methodologies and their results can give significant errors. The work presents a methodology that makes it possible to evaluate the efficiency of unit train shipments based on the processing of results of experimental travels using the methods of mathematical statistics. This approach provides probabilistic estimates of the rolling stock use efficiency for different approaches to the organization of car traffic volumes, as well as establishes the effect for each of the participants in the

Dmytro KOZACHENKO, Roman VERNIGORA, Volodymyr BALANOV, Nazar SANNYTSKYY, Nikolay BEREZOVY, Tetiana BOLVANOVSKA

Transport Problems , ISSUE 3, 91–101

Article

RESEARCH AND DEVELOPMENT OF AN ELECTRIC TRACTION DRIVE BASED ON A SWITCHED RELUCTANCE MOTOR

both freight and passenger rolling stock. Our research is directed to develop a control system for a four-phase SRM. The procedure of fuzzy-regulator synthesis is presented. A physical model of a switched reluctance drive is created, namely, it is a system of a wheel set and a motor. The efficiency of the control system with different types of speed regulators was checked and their main quality indicators were determined. According to the results of the analysis, it was found that the fuzzy

Serhii Buriakovskyi, Artem Maslii, Olga Pasko, Ihor Denys

Transport Problems , ISSUE 2, 69–79

Article

CONTROL OF THE BEGINNING OF ACCIDENTS IN RAILROAD OPERATION SAFETY SYSTEMS IN SEISMICALLY ACTIVE REGIONS USING THE NOISE TECHNOLOGY

, i.e., a subsystem for noise control of the onset of the initiation and dynamics of development of changes in the technical condition of the rolling stock, railroad tracks, bridges, tunnels, and other railroad infrastructure facilities.

Telman ALIEV, Tofig BABAYEV, Tahir ALIZADA, Narmin RZAYEVA

Transport Problems , ISSUE 3, 155–162

Research Article

SIMULATION MODELLING OF VITÓRIA-MINAS CLOSED-LOOP RAIL NETWORK

rolling stock, tracks and equipment, interfere with the transportation of iron ore. The primary objective of the iron ore transport is to meet the daily loading and unloading schedules and minimize queues by maximizing the operations at the loading and unloading points. The VMR simulator developed uses macro-mesoscopic approach with Monte Carlo simulation. To validate the simulator, we used actual data of the railway and compared with reality. We obtained a very good adhesion to the value of 2.9% for

Carlos Henrique Fernandes de FARIA, Marta Monteiro da Costa CRUZ

Transport Problems , ISSUE SE, 125–139

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