Súčasné problémy v koľajových vozidlách
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Item NORMATIVE ANALYTICAL CALCULATION OF STB TECHNOLOGY BOLTED JOINT FOR 661 SERIES RAILWAY VEHICLES(VTS pri Žilinskej univerzite v Žiline, 2023) Blatnický, Miroslav; Molnár, Denis; Dižo, Ján; Ishchuk, VadymWith increasing improvements, the design and technical characteristics of the vehicles along with their equipment change and advance as well as the train communication system [1]. The European Rail Traffic Management System (ERTMS) is the fundament of interoperability of railway transport in Slovakia. The purpose of mentioned system is to improve interoperability and performance of modern railways. The technically oriented basic project ETCS – the unified European Train Control System – is practically based on ERTMS. The ETCS aims to ensure the transmission of information from control systems in stations (or in sections between stations) to the driving vehicle [2-4].Item THE NVH ANALYSIS IN RAIL VEHICLES: A LITERATURE REVIEW(VTS pri Žilinskej univerzite v Žiline, 2023) Dižo, Ján; Blatnický, Miroslav; Ishchuk, Vadym; Molnár, Denis; Semenov, Stanislav; Mikhailov, EvgeniRailway transport represents one of the main transportation kind of transport of these days to transfer both passengers and goods. Every day people commute to work and back home using railway transport in a form of subway systems, light rail transits and other types of rail transport. These types of railway transport can create noise both to the passengers inside of the train as well as to the environment [1, 2]. If the pay is attended to noise when a human is on a board of a train, there are more than one noise source that one can hear. The main sources for interior noise in a rail vehicle are turbulent boundary layer, air conditioning noise, engine (or powertrain), auxiliary equipment, rolling noise and aerodynamic noise from bogie [1, 2]Item DERIVATION OF A SIMPLIFIED MATHEMATICAL MODEL OF A DMU’S POWERTRAIN(VTS pri Žilinskej univerzite v Žiline, 2023) Dižo, Ján; Blatnický, Miroslav; Ishchuk, Vadym; Molnár, DenisRecently, railway transport means can be divided to two main groups depending on the source of the energy. Although dependent traction rail vehicles are more and more popular and many European countries endeavour to build new and new track form them, they cannot operate in every corner of the country [1, 2]. There are regions of countries, where the building of track with electrical network is it is not worth it, it is too difficult or there are other reasons not to not to expand the electrical network for electric rail vehicles [3, 4]. Independent traction rail vehicles are nowadays the most known as train units.Item VÝPOČTY A SIMULÁCIE VIAZANÝCH MECHANICKÝCH SÚSTAV KOĽAJOVÝCH VOZIDIEL S PODDAJNÝM TELESOM(VTS pri Žilinskej univerzite v Žiline, 2023) Ishchuk, Vadym; Dižo, Ján; Blatnický, Miroslav; Molnár, Denis; Solčanský, SebastiánKoľajové vozidlá sú zložité mechanické systémy, ktoré pracujú v rôznych dynamických podmienkach, vrátane prechádzania oblúkov, prejazdu výhybiek a vplyvu nerovností na trati na koľajové vozidlá. Analýza týchto systémov musí byť presná a efektívna, aby sa zabezpečila ich bezpečná a spoľahlivá prevádzka. V poslednom čase rastie záujem o využívanie počítačových simulácií na štúdium dynamických vlastností a parametrov koľajových vozidiel. Konkrétne, implementácia poddajných telies v rámci simulácií systémov viacerých telies sa ukázala ako efektívna metóda na dostatočne presné zachytenie dynamických vlastností koľajových vozidiel [1-3].