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Wyszukujesz frazę "Nitrogen Oxides" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Nitrogen Oxides Emissions from a Diesel Engine Fuelled with Water-Diesel Microemulsions
Autorzy:
Górska, Milena
Skrzek, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/102301.pdf
Data publikacji:
2020
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
diesel engine
nitrogen oxides
fuel microemulsions
silnik wysokoprężny
tlenki azotu
mikroemulsje paliwowe
Opis:
In this study, an experiment was conducted to examine the AVL research diesel engine using two kinds of waterdiesel (W-D) fuel microemulsions. These W-D mixtures contained 3.5 and 7.0% by volume (%, v/v) of distilled water dispersed in regular diesel fuel meeting the requirements of the EN590 standard. The engine was tested under the conditions of low, moderate and higher loads. This research was focused on the emission characteristics of nitrogen dioxide (NO2 ) and nitrogen monoxide (NO). Cumulative emission of NOx was also analyzed before being further discussed. The obtained results of this study showed that the addition of distilled water to the regular diesel fuel has a minor effect on the variation of the nitrogen oxides emission. It was confirmed that NO is the main component of NOx detected in the exhaust stream of the AVL engine fuelled with all tested fuels. It proves that the thermal mechanism of the nitrogen oxides formation was dominant in the combustion process. Moreover, it was found that the addition of water dispersed as microemulsion in diesel fuel had a minor effect on the reduction of the NOx emission.
Źródło:
Advances in Science and Technology. Research Journal; 2020, 14, 3; 83-92
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research of Nitrogen Oxides Concentrations in Exhaust Gas of Compression Ignition Engine Fuelled with Alternative Fuel
Autorzy:
Sikora, Mieczysław
Orliński, Piotr
Bednarski, Mateusz
Powiązania:
https://bibliotekanauki.pl/articles/2024049.pdf
Data publikacji:
2021
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
alternative fuel
internal combustion engines
oxides of nitrogen
speed coefficients for chemistry reaction
Opis:
The research was divided into two stages. The first stage of work was to perform empirical research using the Perkins engine. The test stand was equipped with an exhaust gas composition analyzer, a pressure sensor enabling measurement of pressure in the engine cylinder and a crankshaft position sensor. This stage of research was realized for diesel and UCOME fuel. The second stage was a simulation test. The Zeldowicz model of thermal NO formation in compression ignition engines was used for calculations. Theoretical methods were compared with the results obtained in empirical tests. It was found that the most similar results of tests when powering the engine with UCOME fuel were obtained thanks to the GRI-MECH 3.0 (GM3) method. On the basis of this method, coefficients of the reaction rate of NO formation in an internal combustion engine, which is powered by the higher generation alternative fuel (Sikora et al. (S) method) were developed. For the calculation tests the values of the experimentally determined pressures were used. The proposed method can be used in simulation tests of a diesel engine running on FAME fuels with similar physical and chemical properties as the UCOME fuel. This will significantly reduce the costs of such tests, as some empirical tests can be eliminated by the conclusions of the simulation tests.
Źródło:
Advances in Science and Technology. Research Journal; 2021, 15, 2; 75-83
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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