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    Wyświetlanie 1-3 z 3
    Tytuł:
    External speed–torque characteristics of Fiat 0.9 TwinAir petroland CNG-fuelled engine
    Autorzy:
    Ambrozik, A.
    Kurczyński, D.
    Łagowski, P.
    Warianek, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/133783.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    spark ignition engines
    gas engines
    gasoline engines
    external characteristic
    gas engines emissions
    silnik z zapłonem iskrowym
    silniki gazowe
    silniki benzynowe
    charakterystyka zewnętrzna
    emisja silników gazowych
    Opis:
    The paper presents the results of the experimental study of the turbocharged spark ignition Fiat 0.9 TwinAir engine, with indirect, multipoint petrol injection system, powered by petrol and equipped with the injection system of the compressed natural gas (CNG) supplying gas into the intake manifold. The test results provide the comparison of the selected fuel-efficiency, energetic and ecologic indicators of engine work, obtained when it is powered by Pb95 petrol and the CNG gas. The paper compares the external torque-speed characteristics with factory-set engine controllers. Also presented are the concentration levels of harmful gases in the exhaust fumes: carbon monoxide (CO), nitric oxides (NOx), hydrocarbons (HC) and carbon dioxide (CO2). Results obtained on the engine powered by CNG are indicating lower power and torque, lower concentration of hazardous gases, in particular carbon monoxide and hydrocarbons as well as significantly lower consumption of the gas when compared to petrol.
    Źródło:
    Combustion Engines; 2017, 56, 4; 222-226
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dedicated exhaust gas recirculation in spark ignition engines
    Autorzy:
    Rehan, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/103305.pdf
    Data publikacji:
    2017
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    exhaust gas recirculation
    NOx emissions
    spark ignition engines
    Opis:
    The impact of high levels of exhaust gas recirculation (EGR) has been well documented to decrease fuel consumption and reduce emissions of spark ignition engines. But there are also many limitations associated with this technology like EGR control and tolerance, which can reduce the potential efficiency improvements. A new concept called D-EGR has been presented in which the exhaust from a sub group of power cylinders is channeled back to the intake of all the cylinders. In this literature review both experimental and numerical analysis of this technology is shown. In the former case experiments were performed on 2.0 L PFI engine with gasoline as a fuel in part and high load conditions and the results show that at part loads the D-EGR engine can lead to lower Brake Specific Fuel Consumption, lower HC and CO emissions and higher brake thermal efficiency. At high load operations the results show improved combustion stability and superior knock tolerance. In the numerical studies it shows comparable thermal efficiency with conventional spark ignition (SI) engines and reduction in NOX emissions.
    Źródło:
    Advances in Science and Technology. Research Journal; 2017, 11, 2; 44-50
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Reduction of carbon footprint from spark ignition power facilities by the dual approach
    Autorzy:
    Janusz-Szymańska, Katarzyna
    Grzywnowicz, Krzysztof
    Wiciak, Grzegorz
    Remiorz, Leszek
    Powiązania:
    https://bibliotekanauki.pl/articles/1845486.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    spark ignition engines
    digestion
    gas
    cofiring
    CO2 emissions
    membrane
    separation
    Opis:
    Power generation units, suitable for individual users and small scale applications, are mainly based on spark ignition engines. In recently performed research, reductions of emissions coming from such units, especially considering carbon dioxide emissions, are deemed as the issue of particular importance. One of solutions, postponed to reduce impact of spark ignition engine-based units on the natural environment, is transition from fossil fuels into renewable gaseous fuels, as products of organic digestion. Nonetheless, development of new solutions is required to prevent further carbon dioxide emissions. The paper presents a novel dual approach developed to reduce carbon dioxide emissions from stationary power units, basing on spark ignition engine. The discussed approach includes both reduction in carbon content in the fuel, which is realized by its enrichment with hydrogen produced using the solar energy-supported electrolysis process, as well as application of post-combustion carbon dioxide separation. Results of the performed analysis suggest profitability of transition from fossil into the hydrogen-enriched fuel mixture, with significant rise in operational parameters of the system following increase in the hydrogen content. Nevertheless, utilization of the carbon dioxide separation leads to vital soar in internal energy demand, causing vital loss in operational and economical parameters of the analyzed system.
    Źródło:
    Archives of Thermodynamics; 2021, 42, 2; 171-192
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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