Browsing by Author "Lavčák, Matúš"

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    Aplikačné možnosti HCCI technológie
    (University of Žilina, 2023) Lavčák, Matúš; Puškár, Michal
    This text describes the current state of the art of HCCI technology, which is based on combining the characteristics of a petrol and diesel engine. HCCI engines offer higher fuel efficiency and lower nitrogen oxide emissions. However, they also have disadvantages such as limited load range, control complexity and cold weather starting problems. The next section of the text discusses hybrid propulsion, which uses a combination of an internal combustion engine and an electric motor. It describes the different types of hybrid powertrains such as soft hybrids, plug-in hybrids and full hybrids. Explains their advantages and possible applications. A solution is then proposed where the HCCI engine would serve as a generator in a series hybrid vehicle with an electric motor. Such an arrangement allows optimization of energy use and reduction of emissions. Finally, the relevance of HCCI technology for improving the efficiency of fuel engines and hybrid vehicle design is evaluated.
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    Syntetické palivá a uhlíková neutralita
    (Žilinská univerzita v Žiline, 2023) Lavčák, Matúš; Puškár, Michal
    The transportation sector is a significant contributor to global greenhouse gas (GHG) emissions, accounting for approximately 14 % of all anthropogenic GHG emissions. Despite the increasing popularity of electric vehicles, internal combustion engines (ICEs) continue to dominate the global vehicle fleet, making it essential to find a way to reduce GHG emissions from this sector. One potential solution is the use of efuels, also known as synthetic fuels, which can significantly reduce GHG emissions from transportation. While there are still several challenges associated with their production and use, the benefits of efuels make them a solution worth pursuing. Continued research and development are necessary to improve the efficiency and cost-effectiveness of efuel production and to ensure that they are a sustainable and environmentally responsible solution for the future of transportation. This paper will explore efuels and their potential to decarbonize the transportation sector.