Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "exhaust manifold" wg kryterium: Temat

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-4 z 4
    Tytuł:
    Numeric modelling of fumes flow in exhaust manifold of the combustion engine
    Autorzy:
    Andrych, M.
    Sitnik, L.J.
    Tkaczyk, M.
    Walkowiak, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/949509.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    combustion engine
    exhaust manifold
    fumes flow
    numeric modelling
    Opis:
    In the paper there is presented the methodology of researches as well as the numeric researches results, which aim is the analysis of fumes flow parameters in the exhaust manifold in the diesel engine, particularly the velocity, the temperatures and the turbulence of gas. It has been presented that the research methodology depending on three dimensional model of air flow in the outlet systems with the application of standard numeric methods based on the principles of conservation of: mass, energy and momentum can be the way of researches. The model may be to be the basis for performing changes in geometry of outlet system concerning minimizing the flow losses and shaping the field of velocity. The model enables of calculations of outlet system of internal combustion engines on the stage of its construction. Results show that the numerical simulations methods are one of the possible to use for achievements of investigations low costs, especially that the hardware engine parts must be not prepared. Inter alia, complete model of exhaust manifold, model of fluid volume fitting in the manifold with the numbers of ducting, the grid with applied edge conditions, linear outline of static pressure on the walls of exhaust manifold, total pressure, tension, distribution of total temperature, distribution of fluid velocity on the walls, turbulence intensity are presented in the paper.
    Źródło:
    Journal of KONES; 2014, 21, 4; 9-14
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    CFD analysis of the effect of the exhaust manifold design on the close-coupled catalytic converter performance
    Autorzy:
    Martinez-Martinez, S.
    Leal-Garza, R. D.
    Sanchez-Cruz, F. A.
    Villarreal, E. B.
    Amado-Covarrubias, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/247790.pdf
    Data publikacji:
    2010
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    Close-Coupled Catalytic Converter
    Exhaust Manifold
    flow uniformity
    pressure drop
    Opis:
    It is a common practice to mount a catalytic converter directly at the outlet of the exhaust manifold in order to reduce the cold start emissions from the automotive engines by improving the light-off time. The so called Close-Coupled Converter, because of its nearness to the engine, is more exposed to non-uniform fluid flows comingfrom the individual manifold runners, what frequently yields a stream of gases flowing mainly through a section of the monolith causing the aging of the catalyst and low conversion efficiency, among other negative effects. Computational Fluid Dynamics (CFD) has became a very useful and widely used tool to analyze and optimize this kind of exhaust after-treatment systems in a relatively fast and accurate way for design purposes. There are several designs of exhaust manifolds whose shape and dimensions are mainly restricted not only by the engine characteristics but by the space constraints of the particular vehicles they are designedfor. In this work the commercial CFD code ANSYS FLUENT was used to evaluate and compare the effect of three shapes of exhaust manifolds on the fluid flow uniformity at the entrance of the Close-Coupled Converter. Pressure drop in the entire Manifold-Converter device is also an important parameter considered for the design evaluation. The manifolds investigated are of type cast, 4-2-1 and L-shaped, which are commonly used in the automotive industry.
    Źródło:
    Journal of KONES; 2010, 17, 4; 303-311
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Heat Treatment of the SiMo Iron Castings - Case Study in the Automotive Foundry
    Autorzy:
    Cygan, B.
    Stawarz, M.
    Jezierski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/379738.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    heat treatment
    solidification process
    SiMo cast iron
    exhaust manifold
    automotive parts
    obróbka termiczna
    proces krzepnięcia
    żeliwo SiMo
    kolektor wydechowy
    części samochodowe
    Opis:
    Silicon – molybdenum cast iron commonly called SiMo due to its unique properties has becoming more and more interesting engineering material. The history and development of this alloy is relatively long but, due to the significant difficulties during the manufacturing process resulting in the lower final quality than expected, it has not been applied to often in practice. The biggest challenge is its brittleness as a result of the carbides precipitations. During last few years, thanks to the many important researches made and the general foundry technology development, the interest in SiMo iron has been rapidly growing, especially for the castings for heavy duty applications like corrosion, high temperature and wear abrasion resistant parts. In the article the heat treatment attempts to improve the microstructure of SiMo castings has been presented. The goal was to destroy or at least to refine and uniformly distribute the carbides precipitations to improve mechanical properties of the exhaust manifold castings for the cars. The experiments were carried out for the alloy contains approx. 4% Si, 1% Mo and 3.2%C. The range of the research included: hardness measuring, standard mechanical properties and microstructure for as-cast state and after that the subsequent heat treatment process with another properties check. The result of the heat treatment was the elimination of pearlite from the metal matrix. Moreover, the changes of the carbide molybdenum – rich phase morphology were observed. The dispersion of the carbides precipitations in the carbides area was observed. The experiments proved the possibility to control the microstructure and the mechanical properties of the SiMo castings by means of heat treatment but only to some extent.
    Źródło:
    Archives of Foundry Engineering; 2018, 18, 4; 103-109
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ nieszczelności układu dolotowego silnika ZI na emisję szkodliwych substancji
    The effect of the leakage of the engine arrest engine and emissions of harmful substances
    Autorzy:
    Kołodziej, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/316132.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Naukowo-Wydawniczy "SPATIUM"
    Tematy:
    emisja substancji szkodliwych
    spaliny
    analiza spalin
    smog
    samochód osobowy
    silnik ZI
    kolektor dolotowy
    emission of harmful substances
    exhaust
    exhaust gas analysis
    car
    ZI engine
    intake manifold
    Opis:
    W artykule poruszono podstawową problematykę związaną z ruchem pojazdów w dużych miastach oraz związaną z nim podwyższoną emisją szkodliwych substancji. W części badawczej przeanalizowano wpływ nieszczelności kolektora dolotowego silnika ZI na emisję szkodliwych substancji. Przerobiono kolektor dolotowy samochodu osobowego w celu zasymulowania nieszczelności każdego z jego kanałów. Zachowano identyczny stopień nieszczelności dla zasilenia każdego z cylindrów, badając emisję szkodliwych substancji w pełnym zakresie prędkości obrotowych. Wykazano różnice w składzie spalin w zależności od badanych wariantów, wpływających na stopień napełnienia kolejnych cylindrów silnika.
    In this article, the issues related to vehicular traffic in big cities and heightened harmful substance emissions stemming from it were described. In the research part, the effect of air leakage in the SI engine intake manifold on substance emissions was investigated. The manifold was customized to simulate air leakage in each of its air ducts. Same ratio of leakage was assumed for each duct, and substance emissions were measured in full range of engine rotational speeds. A difference in exhaust gas composition was shown for each researched variant, being the result of varying cylinder filling ratio due to simulated air leakage.
    Źródło:
    Autobusy : technika, eksploatacja, systemy transportowe; 2018, 19, 6; 502-505, CD
    1509-5878
    2450-7725
    Pojawia się w:
    Autobusy : technika, eksploatacja, systemy transportowe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies