Volume 7, Issue 1 (2023)

Author(s): Miroslav BOŠANSKÝ, Roman PROTASOV, Luboš MAGDOLEN

Abstract:
The contribution is focused on the possibilities of applying hard thin coatings in non-standard gears. Based on the analysis of individual methods of their application, it appears that the most suitable method is the PVD (Physical Vapor Deposition) method. From the point of view of possible application, non-standard C-C gearing was chosen, which shows lower contact pressures compared to standard involute gearing and especially lower values of specific slips, the size of which has a negative effect on the wear of hard thin coatings. A TiN coating was chosen and for comparison TiNC in the Niemann stand scuffing experiment. The tested gear was lubricated with Biogear S 150 ecological lubricant.
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Author(s): Pavol KUDELA, Michal PALČÁK

Abstract:
Today, we live in an ever-faster world, when time at work, work meetings and other daily activities must be completed on time. Therefore, arriving everywhere on time requires consistent time management, which, indeed, can disrupt the unpredictable development of the traffic situation. That is why we try to use various digital technologies and applications that make it easier to plan our activities. For example, when timing your arrival at work, there is a need to have extra time due to an unpredictable traffic accident. The time spent in the columns caused by accident could be markedly reduced if digital technologies were used for documentation. For this reason, the article deals with the implementation of technologies in documenting traffic accidents abroad and their subsequent need for application in the conditions of the Slovak Republic.
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Author(s): Ľuboš MAGDOLEN, Andrej CHRÍBIK, Marián POLÓNI

Abstract:
This article is focused on the application of the low-energy synthesis gas generated from municipal waste in the combustion engine. Influence of the gas composition on the internal parameters of the combustion engine used in the cogeneration unit was analysed. These analyses show that decrease in the power output in the form of the IMEP is in the region of 10% - 40% compared to the methane. With an increasing proportion of hydrogen in the fuel the heat release speed was increased together with pressure rise rate. Presented results are useful for deeper understanding of the processes that are happening in the combustion engine, and they also show the importance of synthesis gas composition. This can be useful for knowing how to set up syngas production processes to achieve the highest energetic and economic outputs possible.
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Author(s): Michal PALČÁK, Pavol KUDELA

Abstract:
The use of electric vehicles has been acknowledged as a crucial technique to slow down global warming, lessen air pollution, and improve energy security. Electric vehicles (EVs) have the potential to dramatically cut greenhouse gas emissions, especially in the transportation industry. However, the development of an infrastructure that can support the shift to a sustainable ecosystem as well as the electrification of vehicles are both necessary for the sustainability of electromobility. The creation of charging stations that are conveniently positioned and easily accessible to satisfy the needs of EV users is a crucial part of this infrastructure. The sustainability of the ecosystem is evaluated in this research together with the effects of the best planning practices for the placement of charging stations. The study concludes that the widespread use of EVs and the creation of a comprehensive infrastructure, including a network of carefully placed charging stations, can lead to a sustainable ecology.
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