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Wyszukujesz frazę "Wróblewski, A. E." wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Piston assembly in the most powerful 2.0l diesel engine – case study of the current tribological system and innovative concepts for the future
Autorzy:
Kałużny, J.
Merkisz, J.
Stepanenko, A.
Wróblewski, E.
Gapiński, B.
Piasecki, A.
Gallas, D.
Powiązania:
https://bibliotekanauki.pl/articles/133301.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
piston engine
powertrains development
tribological system
silnik tłokowy
rozwój układów napędowych
system tribologiczny
Opis:
This article is a contribution to the ongoing debate on the scenario of the vehicle powertrains development. The directions of the internal combustion engines development in search of the possibility of effective economic and ecological indicators improvement have been indicated. It has been pointed out that this goal can be achieved through the use of nanotechnology in order to exceed the downsizing barriers resulting from the permissible mechanical loads for conventional materials. The article presents the study of the construction and materials used in the piston assembly of the most advanced four-cylinder, compression-ignition diesel engine currently in manufacture. Original concepts of nanotechnology have been proposed to reduce friction losses in major friction components of future engines with extremely high loads. The main idea is to verify the hypothesis that the sub-micron surface texture of the friction components obtained in the process of applying anti-wear outer layers can lead to an effective reduction of friction losses under real engine operating conditions. Computer simulations of the effects of introducing the surface texture in the upper sealing ring on friction loss confirm this hypothesis by showing friction value being reduced by 3-4% relative to the standard ring profile. In the summary, further advanced technologies designed to effectively utilize the unique properties of carbon nanotubes have been described.
Źródło:
Combustion Engines; 2017, 56, 4; 127-133
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Friction reducing performance of carbon nanotubes covered pistons in internal combustion engines – engine test results
Autorzy:
Kałużny, J.
Merkisz, J.
Kempa, K.
Gapiński, B.
Wróblewski, E.
Stepanenko, A.
Al-Karawi, M.
Powiązania:
https://bibliotekanauki.pl/articles/133001.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
combustion engines
piston
carbon nanotubes
friction
silniki spalinowe
tłok
nanorurki węglowe
tarcie
Opis:
This article discusses the posibility of reducing friction losses in internal combustion engines by using carbon nanotubes, pointing out the large potential of this application. Experimental pistons were made of standard aluminum alloy and coated with a layer of nanotube deposits by spraying them with an aqueous solution containing the binder. The proposed technology of applying layers of nanotubes can be adopted in industrial-scale production. Engine tests were carried out showing a significant reduction of the engine motoring torque, up to 16% for the experimental pistons, thus confirming the favorable tribological properties of nanotubes observed in tribological research and reported by many authors. Supplementary tests were carried out: SEM, EDS, coordinate measuring technique, and x-ray tomography. An alternative technology for hierarchical nanotube multilayer coatings electro-deposition was proposed.
Źródło:
Combustion Engines; 2018, 57, 1; 14-24
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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