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    Wyświetlanie 1-2 z 2
    Tytuł:
    Effectiveness of cellular injection molding process
    Autorzy:
    Garbacz, T.
    Dulebova, L.
    Krasinskyi, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/103059.pdf
    Data publikacji:
    2013
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    thermoplastics polymers
    cellular injection molding process
    blowing agents
    physical properties
    Opis:
    In a study of cellular injection, molding process uses polyvinylchloride PVC. Polymers modified with introducing blowing agents into them in the Laboratory of the Department of Technologies and Materiase of Technical University of Kosice. For technological reasons, blowing agents have a form of granules. In the experiment, the content of the blowing agent (0–2,0% by mass) fed into the processed polymer was adopted as a variable factor. In the studies presented in the article, the chemical blowing agents occurring in the granulated form with a diameter of 1.2 to 1.4 mm were used. The view of the technological line for cellular injection molding and injection mold cavity with injection moldings are shown in figure 1. The results of the determination of selected properties of injection molded parts for various polymeric materials, obtained with different content of blowing agents, are shown in Figures 4–7. Microscopic examination of cross-sectional structure of the moldings were obtained using the author’s position image analysis of porous structure. Based on analysis of photographs taken (Figures 7–9) it was found that the coating containing 1.0% of blowing agents is a clearly visible solid outer layer and uniform distribution of pores and their sizes are similar.
    Źródło:
    Advances in Science and Technology. Research Journal; 2013, 7, 18; 74-80
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Self-Ignition Delay and Control Parameters of Diesel Engines for Different Vehicle Feeding Systems and Different Fuels
    Autorzy:
    Lotko, Wincenty
    Powiązania:
    https://bibliotekanauki.pl/articles/2024151.pdf
    Data publikacji:
    2021
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    self-ignition delay
    combustion process
    fuel injection process
    diesel engine
    renewable fuels
    opóźnienie samozapłonu
    proces spalania
    proces wtrysku paliwa
    silnik wysokoprężny
    paliwa odnawialne
    Opis:
    The phenomena accompanying the self-ignition period have been the subject of extensive research in this area. They are usually carried out in constant volume pressure chambers or in reactors with constant air flow. Such tests are considered to be basic. The conditions in these tests are definitely different from those in compression ignition engines. Therefore, the comparison of the auto-ignition delay periods from test setups to those obtained from real engines raises a number of doubts. Because the self-ignition delay period determines the combustion process, a theoretical analysis was conducted, pertaining to a number of factors that have an impact on this process which determines the operational aspects of the engine, and thus its economics and ecology. The research object was a single-cylinder engine from AVL LIST GmbH in Graz, Austria. The engine is equipped with a Common Rail injection system. The test setup meets the following standards: Directive 1999/96/EC of the European Parliament and the Council of 13th December 1999, Regulation (EC) No 715/2007 of the European Parliament and the Council of 20th June 2007, as well as Commission Regulation (EC) No 692 /2008 of 18th July 2008. The analysis of the operational aspects of the self-ignition delay period was based on the results of tests on the AVL 5402 engine fueled with hydrocarbon fuels: diesel and synthetic oil. The engine was also fed with vegetable fuel – rapeseed oil. The obtained material from the tests warns the user of CI engines against the effects of their failure if the engine control parameters and the quality of fuel for its supply are not maintained as recommended by the manufacturers. The material contained in the publication is used for scientific analysis, and, which is worth emphasizing, is of a utilitarian nature.
    Źródło:
    Advances in Science and Technology. Research Journal; 2021, 15, 1; 245-254
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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