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    Wyświetlanie 1-5 z 5
    Tytuł:
    Aging of engine oils and their influence on the wear of an internal combustion engine
    Autorzy:
    Idzior, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/2097522.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    combustion engines
    engine oils
    aging of engine oils
    viscosity
    selection
    silniki spalinowe
    oleje silnikowe
    starzenie olejów silnikowych
    lepkość
    selekcja
    Opis:
    New designs of internal combustion engines require the use of engine oils that can cope with more demanding conditions, primarily with greater loads and higher temperatures. The requirements of recent years have led to a wider use of modern base oils and specially designed additive packages. This avoids the formation of impurities and changes in viscosity as a result of shearing of the viscosity additives under high loads. The article discusses the important problem of oil aging during operation and the impact of this phenomenon on the operation of internal combustion engines. The influence of oil service life and its replacement on the emission of toxic exhaust gas components was discussed, and the results of research on the effect of oil service life on changes in their viscosity were presented.
    Źródło:
    Combustion Engines; 2021, 60, 2; 15--20
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of different biofuels on common rail injector flow rate
    Autorzy:
    Rybak, A.
    Hunicz, J.
    Krzaczek, P.
    Golimowski, W.
    Marcinkowski, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/133525.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    oils
    lubrication
    engines
    injector
    diesel
    biodiesel
    oleje
    nawilżanie
    silnik
    wtryskiwacz
    Opis:
    In this study dynamic flow rates of a common rail injector using diesel fuel and different biofuels were determined. As biofuels, fatty acid methyl esters originating from canola, poultry, cattle and used cooking oil were tested. The tested fuels exhibited different physical properties e.g. density and viscosity. Measurements of the injector delivery rates were performed on a test stand designed for determination of injectors and injection pumps characteristics. Each fuel was tested at temperatures between 30 and 60°C, under injection pressure in the range of 30–180 MPa and injection time in the range of 200–1600 microseconds. The results showed differences in injector flow rates depending on used fuel, however different fuel properties affected amount of fuel injected especially at short injection durations.
    Źródło:
    Combustion Engines; 2017, 56, 4; 39-43
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fatty acid composition as a parameter of using vegetable oils for biofuel production
    Autorzy:
    Ambrosewicz-Walacik, M.
    Tańska, M.
    Walacik, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/134106.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    vegetable oils
    quality
    fatty acids composition
    biofuels production
    niekonwencjonalne oleje roślinne
    jakość
    skład kwasów tłuszczowych
    produkcja biopaliw
    Opis:
    The aim of the study was to show the validity of determining the quality of oils intendent for the biofuels production. One of the main discriminant that should be used to assess the suitability of oil raw materials for the fuel purposes is the composition of fatty acids. The research was conducted on 13 different samples of vegetable oils, that were cold-pressed from the seeds of various species, including rape, camelina, flax (light and dark), mustard, milk thistle, hemp, evening primrose oil, amaranth, sunflower, soybean, and cumin. The analysis of the fatty acid composition showed significant differences between the analysed oil samples, both within the species and varieties of oilseeds. The results indicate the need for continuous quality control of oils and fats led to the production of biodiesel in the small households and large commercial enterprises, because as it was indicated by the analysis of fatty acids composition rape seeds of different varieties are characterized by the diverse quality.
    Źródło:
    Combustion Engines; 2017, 56, 2; 38-42
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Unconventional vegetable oils as raw materials for biodiesel production
    Autorzy:
    Ambrosewicz-Walacik, M.
    Tańska, M.
    Walacik, M.
    Kozłowski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/133654.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    unconventional vegetable oils
    quality
    fatty acids composition
    biofuels production
    niekonwencjonalne oleje roślinne
    jakość
    skład kwasów tłuszczowych
    produkcja biopaliw
    Opis:
    The aim of the study was to determine the possibility of using the unconventional vegetable oils for the biofuel production. The research material were cold-pressed oils from the seeds of milk thistle, hemp and evening primrose. After conducting the initial physicochemical characteristics of oil samples, including the determination of sulphur content, acid number, viscosity at 40°C, density at 15ºC, oxidation stability and fatty acid composition, analysed oils have been subjected to the transesterification process. The roduced methyl esters were further characterized by the above-mentioned features. Additionally, the temperatures of cold filter plugging point, cloud point and flash point were determined. On the basis of the conducted analyses it was demonstrated that the obtained oils, due to the high, far in excess of acceptable, values of the viscosity and density, and too low oxidative stability could not be used as a pure fuel. A similar conclusion was formulated in case of the produced methyl esters.
    Źródło:
    Combustion Engines; 2017, 56, 1; 197-200
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The concept of research on ecological, energy and reliability effects of modified marine fuel oils application to supply compression-ignition engines in real conditions
    Autorzy:
    Korczewski, Z.
    Marszałkowski, K.
    Rudnicki, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/133741.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    compression ignition engine
    modified marine fuel oils
    laboratory research test bed
    concept of research implementation
    silnik o zapłonie samoczynnym
    zmodyfikowane paliwo okrętowe
    Opis:
    Within the article, basic assumptions of the research project financed by Regional Fund for Environmental Protection and Water in Gdansk were described. The project concerns the experimental investigations carried out on laboratory compression-ignition engine in conditions of its supply with a non-standard marine fuel oil. Configuration and measuring capability of laboratory test bed presently being constructed were introduced. The concept of engine tests implementation as well as a general outline of research methodology was characterised. After being accepted by Polish Committee for Standardization they could become an effective and efficient verification tool for various types of modified fuel oils introduced on the market, both for the maritime administration offices and shipyards as well as ship owners in operation.
    Źródło:
    Combustion Engines; 2017, 56, 4; 56-61
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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