Súčasné problémy v koľajových vozidlách
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Item SUBSTANTION OF THE ENVIRONMENTAL EFFICIENCY OF THE DEVICE FOR PARALLEL RETRACTION OF BRAKE SHOES FOR FREIGHT WAGONS(VTS pri Žilinskej univerzite v Žiline, 2023) Panchenko, Sergii; Gerlici, Juraj; Lovska, Alyona; Ravlyuk, VasylItem DERIVATION OF A SIMPLIFIED MATHEMATICAL MODEL OF A RAIL VEHICLE POWERTRAIN WITH A HYDRODYNAMIC CONVERTER(VTS pri Žilinskej univerzite v Žiline, 2023) Dižo, Ján; Blatnický, Miroslav; Ishchuk, Vadym; Lovska, Alyona; Kravchenko, OleksandrIn these days, railway transport is one of the most often used kind of transport of people and goods for shorter as well as longer distances. This is not only in many European countries, but also in other part of the world. Day by day people commute to work and to home by railway transport means, such as subway systems, light rail transits as well as by other kinds of railway transport means. The railway transport has several advantages, which make it effective, reliable, and sustainable in comparison with other kinds of transport [1]. On one hand, there are rail vehicles, which are powered from power line. On the other hand, there are rail vehicles, which has own source of power. The rail vehicles of the first group are called as dependent traction vehicles. The rail vehicles, which belong to the second group, are called independent traction vehicles. It is so-called a diesel multiple unit (abbr. DMU), it is a multiple-unit train, and it is powered by an on-board diesel engine. An DMU does not need to include a separate locomotive, therefore, an engine is incorporated into one or even in more of wagons. There is usually applied a diesel combustion engine, but, nowadays, some other alternative sources of energy are tested [2-4]. These diesel-powered single unit railway vehicles are further classified depending on their transmission type. In principle, there are recognized following types of DMUs: diesel mechanical multiple unit (abbr. DMMU), diesel-hydraulic multiple unit (abbr. DHMU) and diesel-electric multiple unit (abbr. DEMU).Item RESEARCH OF THE STRENGTH OF THE BODY OF A COVERED WAGON WHEN IT IS FASTENED WITH A NEW DEVICE ON THE DECK OF A RAILWAY FERRY(VTS pri Žilinskej univerzite v Žiline, 2023) Gerlici, Juraj; Lovska, Alyona; Vatulia, Glib; Fomin, Oleksij; Kravchenko, OleksandrThe efficiency of functioning of the transport industry necessitates the introduction of modern vehicles. Since the main segment of the transportation process is allocated to rail transport, the creation of modern wagon designs must be subject to special requirements. This applies in particular to their load-bearing structures. When designing the load-bearing structures of modern wagons, it is necessary to take into account the specified values of loads that can act on them not only when operating on main tracks, but also in combined railway-ferry transportation. This direction is quite relevant for many European countries that have access to international traffic through water areas of the seas.Item FORMALIZATION OF RELIABILITY INDICATORS OF INDUCTION MOTORS FOR ELECTRIC DRIVES OF RAILWAY ROLLING STOCK(VTS pri Žilinskej univerzite v Žiline, 2023) Gubarevych, Oleg; Gerlici, Juraj; Kravchenko, Oleksandr; Melkonov, Hryhoriy; Lovska, AlyonaThe issue of increasing the efficiency of transportations is an important problem of the railway transport rolling stock. The efficiency of transportation implies, first of all, the ways of reducing the expenditures on the maintenance and operation of transport means, providing timely performance of logistic tasks at the high level of reliability and safety of the services provided.