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    Wyświetlanie 1-5 z 5
    Tytuł:
    Interpretacja poznawcza metody Monte Carlo w zastosowaniach technicznych
    The cognitive interpretation of the Monte Carlo method for the technical applications
    Autorzy:
    Chłopek, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/301693.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
    Tematy:
    metoda Monte Carlo
    silnik spalinowy
    test
    Monte Carlo method
    internal combustion engines
    internal combustion engine tests
    Opis:
    W pracy przedstawiono poglądy na temat poznawczej interpretacji metody Monte Carlo. We wstępie zamieszczono informacje na temat zastosowania doświadczeń przypadkowych do poznania rzeczywistości od Starożytności do czasów współczesnych. Główna teza pracy dotyczy zastosowania metody Monte Carlo do poznawania przyczynowych i przypadkowych właściwości doświadczanej rzeczywistości. Przedstawiono przykład wykorzystania metody Monte Carlo w symulacji testu dynamicznego do badania silników spalinowych testem statycznym.
    The paper presents views on the cognitive interpretation of the Monte Carlo method. The introduction contains information on the application of a random occurencies to get to know the reality, starting from antiquity till the present day. The main argument of the paper concerns the use of the Monte Carlo method to learn the causal and random properties of the reality being experienced. The examples have been presented of the use of the Monte Carlo method in the dynamic test simulation to examine internal combustion engines with the static test.
    Źródło:
    Eksploatacja i Niezawodność; 2009, 3; 38-46
    1507-2711
    Pojawia się w:
    Eksploatacja i Niezawodność
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of exhaust emissions from the gasoline engine of a light duty vehicle in the Real Driving Emissions test
    Autorzy:
    Andrych-Zalewska, Monika
    Chlopek, Zdzislaw
    Pielecha, Jacek
    Merkisz, Jerzy
    Powiązania:
    https://bibliotekanauki.pl/articles/24200821.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
    Tematy:
    internal combustion engine
    pollutant emission
    RDE test
    Monte Carlo method
    Opis:
    The article contains the research results and analysis of the processes that take place as part of a gasoline engine light duty vehicle Real Driving Emissions test. Dimensionless characteristics of exhaust emission and fuel mass consumption in the RDE test were also determined: emission intensity, particle number emission intensity, fuel mass consumption intensity. An algorithm for determining the characteristics specific distance pollutant emission, specific distance particle number and specific distance fuel mass consumption in the vehicle speed domain in the RDE test was presented using the Monte Carlo method. The determined characteristics were approximated by polynomial functions in the form of sets of points. These relationships were characterized by a large dispersion of values, which was primarily due to the fact that the random values of the averaging limits contain very different engine operating conditions.
    Źródło:
    Eksploatacja i Niezawodność; 2023, 25, 2; art. no. 165880
    1507-2711
    Pojawia się w:
    Eksploatacja i Niezawodność
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determination of exhaust emission characteristics in the RDE test using the Monte Carlo method
    Autorzy:
    Andrych-Zalewska, Monika
    Chłopek, Zdzisław
    Merkisz, Jerzy
    Pielecha, Jacek
    Powiązania:
    https://bibliotekanauki.pl/articles/27311798.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    Monte Carlo method
    RDE test
    combustion engine
    pollutant emission
    metoda Monte Carlo
    RDE
    silnik spalinowy
    emisja zanieczyszczeń
    Opis:
    The article presents a method of determining the characteristics of exhaust emissions and fuel mass consumption in real driving conditions based on a single test using the Monte Carlo method. The exhaust emission characteristics used are the relations between the emissions and the average vehicle speed, and the characteristic of the fuel mass consumption is the dependence of the fuel mass consumption at the average vehicle speed. The results of empirical research of a passenger car with a spark-ignition engine in the RDE test were used. The use of the Monte Carlo method made it possible to select the initial and final moments of averaging the process values, thanks to which it was possible to determine the discrete values of the characteristics for various values of average vehicle speeds. The determined discrete characteristics of the particulate mass and number emissions and fuel mass consumption relative to the average vehicle speed were approximated by polynomial functions of the second and third degree. The determined discrete characteristics, presented as sets of points, were characterized by a relatively small dispersion in relation to their polynomial approximations. The average relative deviation of the points of discrete characteristics from the value of the polynomial was in most cases small – less than 4%, only in the case of the number of particles emitted deviated from this, as the average relative deviation of the measured points from the determined polynomial was nearly 14%. Combined with the results of RDE empirical studies, the Monte Carlo method proved to be an effective method for determining the characteristics of exhaust emissions, measured in real vehicle operating conditions. The main advantage of the proposed method was a significant reduction in the actual workload necessary to carry out the empirical research – where it became possible to determine the characteristics in a large range of vehicle average speed values with just one drive test. Using standard methods of measuring this type of data, it would be necessary to conduct multiple tests, driving at different average vehicle speeds.
    Źródło:
    Archives of Transport; 2023, 66, 2; 45--60
    0866-9546
    2300-8830
    Pojawia się w:
    Archives of Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of the Monte Carlo method in the calculation procedure of the internal combustion engine
    Autorzy:
    Sitnik, Lech J.
    Zadworny, Dominik
    Powiązania:
    https://bibliotekanauki.pl/articles/133335.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    internal combustion engine
    Monte Carlo method
    compression ignition engine
    calculations
    tłokowy silnik spalinowy
    metoda Monte Carlo
    silnik o zapłonie samoczynnym
    obliczenia
    Opis:
    The aim of the work is to check the possibility of applying the Monte Carlo method to the calculation procedure of internal combustion engines. This has been accomplished by modifying existing algorithms in such a way that the variables responsible for the main parameters of the engine are selected in a random manner using Solver written in Microsoft Excel. It turns out that this method can actually be implied, however, it has some limitations related to the high complexity of calculations.
    Źródło:
    Combustion Engines; 2019, 58, 3; 24-26
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determination of characteristics of pollutant emission from a vehicle engine under traffic conditions in the engine test
    Autorzy:
    Andrych-Zalewska, Monika
    Chłopek, Zdzisław
    Merkisz, Jerzy
    Pielecha, Jacek
    Powiązania:
    https://bibliotekanauki.pl/articles/2202521.pdf
    Data publikacji:
    2022
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    combustion engine
    pollutant emission
    driving test
    engine test
    characteristics of pollutant emission
    Monte Carlo method
    silnik spalinowy
    emisja zanieczyszczeń
    test jezdny
    test silnika
    charakterystyki emisji zanieczyszczeń
    metoda Monte Carlo
    Opis:
    The paper describes the method of determination of exhaust emission characteristics from a vehicle engine based on the results obtained in a driving test simulated on an engine dynamometer. These characteristics are the relations between the specific distance emissions and the zero-dimensional characteristics of the process of vehicle velocity: the average velocity value and the average value of the absolute value of the product of vehicle velocity and acceleration. The exhaust emission characteristics are used to simulate the emissions from vehicles operating in different types of traffic conditions. The engine operating states in the engine dynamometer tests were determined by the operating conditions of the vehicle during the test. The authors applied the Monte Carlo method in order to determine the characteristics of different values of the zero-dimensional characteristics of the vehicle velocity process. This enabled the determination of the characteristics based on the test results from a single realization of the process of vehicle velocity. Additionally, the developed method allowed a replacement of the empirical research on the chassis dynamometer with the one performed on the engine dynamometer. The obtained exhaust emission characteristics are in line with the characteristics obtained on the chassis dynamometer in multiple tests.
    Źródło:
    Combustion Engines; 2022, 61, 4; 58--65
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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