Technológ - Ročník 15.; Číslo 2/2023

Permanent URI for this collectionhttps://drepo.uniza.sk/handle/hdluniza/838

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Author: search.filters.author.Gerlici, JurajStart date: 2023

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    Skúmanie jazdných vlastností koľajového vozidla a vzájomného pôsobenia kontaktu koleso/koľajnica pomocou simulačných výpočtov
    (Žilinská univerzita v Žiline, 2023) Šťastniak, Pavol; Gerlici, Juraj; Dižo, Ján; Blatnický, Miroslav; Kravchenko, Kateryna
    The paper deals with the dynamic analysis and evaluation of the driving characteristics of the selected railway vehicle through computer simulations on virtual and mathematical models. Approaches and methodology from the point of view of creating a virtual model of a railway vehicle as a multi-body system are described in detail., its components and their interrelationships, with the help of which it is possible to obtain the results of a simulated driving of a vehicle with specified parameters of the mechanical system of the vehicle and the track. Practical calculations are performed using the Simpack computer program.
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    Stanovenie úspory energetických nákladov na pohon vlaku znížením jazdného odporu
    (Žilinská univerzita v Žiline, 2023) Panchenko, Sergii; Gerlici, Juraj; Lovska, Alyona; Ravlyuk, Vasyl; Dižo, Ján
    Examining the mechanical part of the braking systems of railway vehicles allowed us to find out that the brake blocks of the most freight cars are pressed by their upper ends against certain wheel surfaces when the brakes are released. This causes additional resistance to the movement of the train and also causes significant damage to the railway infrastructure of Ukraine in the case of freight traffic. To eliminate the friction between the brake block and the wheel when the train moves in the traction mode and when using inertia, it is advisable to use a modernized device developed according to the UkrDAZT technology, which allows to reduce the running resistance of the train. This leads to a reduction in the consumption of fuel and electricity for the propulsion of trains and at the same time allows to reduce the operating costs of rail transport for energy consumption.
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    Koncepcia, bezpečnosť a súvisiaci priemyselný výskum náhrady dieselového pohonu za pohon s vodíkovým palivovým článkom v diesel motorových jednotkách radu 861
    (Žilinská univerzita v Žiline, 2023) Šťastniak, Pavol; Gerlici, Juraj; Cesnek, Dušan; Golian, Peter
    The subject of the research is the development of a technical feasibility study that will deal with the concept, safety and related industrial research for the replacement of diesel traction by hydrogen fuel cell traction in the railway vehicles series 861. Part of the research is also the operation of such a source of traction, the assessment and evaluation of risks, especially from the point of view of maintenance and operation. The research result will be a technical study based on numerical simulations of static and dynamic loads, energy management of the fuel cell traction and requirements for the inclusion of such vehicles in regular operation on non-electrified tracks of the Slovak Republic.