Informacja

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

Wyszukujesz frazę "Włostowski, Radoslaw" wg kryterium: Autor


Wyświetlanie 1-5 z 5
Tytuł:
Design of the turbocharger bearing arrangement to increase the overall efficiency of the combustion engine
Autorzy:
Sroka, Zbigniew
Prakash, Srinath
Włostowski, Radoslaw
Powiązania:
https://bibliotekanauki.pl/articles/2097615.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
turbocharger
journal bearing
design
simulation
turbosprężarka
łożysko poprzeczne
projekt
symulacja
Opis:
The main objective of this study was to design a journal bearing, such that it can withstand the forces that arise in context to increasing the length of the shaft in an automotive turbocharger. The work will also provide information on how the design changes affect the overall performance of the bearing. The design changes include the thickness of the oil film, the number of grooves, the dimension of the grooves, the number of inlets and outlets, the dimension of the babbitt and mainly the length of the journal bearing. The simulation models were created using CATIA V5 and the analysis is done using ANSYS 19.2. The flow is considered to be laminar and is calculated using Reynold’s Equation. The new concept gave insight on how the design considerations affect the pressure distribution and the pressure developed. From the results, it was interpreted that the new design can withstand the four times the pressure while distributing the pressure over twice the original design.
Źródło:
Combustion Engines; 2022, 61, 1; 83--89
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of fuel mixture on engine vibrations
Autorzy:
Wróbel, Radosław
Łoza, Łukasz
Haller, Piotr
Włostowski, Radosław
Powiązania:
https://bibliotekanauki.pl/articles/133331.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
engine vibrations
fuel mixture
FFT
frequency response
drgania silnika
mieszanka paliwowa
pasmo przenoszenia
Opis:
In the article, the authors analyze the effect of a fuel mixture (iso-octane, butanol and ethanol) on the generation of engine vibrations. The paper presents the results in the form of frequency response (using the Fast Fourier Transform - FFT) for three mixtures of different proportions. The measurements were made with the use of accelerometers and data acquisition cards, conditioning the received signal. The vibration component, in the form of acceleration, will be subjected to a FFT and presented in graphical form (periodogram). The authors put a special emphasis on a comparative analysis, indicating changes in harmonics, which may be a potential cause of engine degradation.
Źródło:
Combustion Engines; 2019, 58, 2; 136-138
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimization of the electric bus radiator design in terms of noise emissions and energy consumption by computational fluid dynamics
Autorzy:
Janicka, Anna
Zawiślak, Maciej
Głogoza, Artur
Włostowski, Radoslaw
Powiązania:
https://bibliotekanauki.pl/articles/2202515.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
automotive engineering
electric bus
CFD
noise
ecodesign
inżynieria samochodowa
autobus elektryczny
hałas
ekoprojekt
Opis:
The paper presents the numerical optimization of an innovative radiator for use in electric buses in terms of energy consumption and noise emission. Computational fluid dynamics simulations were performed. The flow of the cooling medium was modeled using the RANS method. The two-equation k-ɛ turbulence model, the heat transfer model and the acoustic model were used. According to the research results, the separation of the air stream in individual fan sections contributes to the improvement of energy efficiency and reduces noise emissions. As a result of the simulation, it was found that the best solution in terms of noise emission as well as the occurring flow phenomena caused about a 2 dB decrease of maximum values of the noise level and allowed the equalization of the cooling medium velocity (prevailing velocity range between 4 and 9 m/s). The results of the simulations were verified under laboratory and field conditions, showing a very good convergence of the model with the results of the experiments (i.e. the maximum noise level was estimated at 57 dB, under measurement conditions for the same operating point at 59 dB) while maintaining the baseline energy demand, which indicates a new approach in the method of shaping internal elements of electric vehicle coolers.
Źródło:
Combustion Engines; 2022, 61, 4; 41--50
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Designing a Small Water Power Plant in Poland in the Aspect of Minimizing the Impact on River Ecosystem
Autorzy:
Janicka, Anna
Molska, Justyna
Świeściak, Joanna
Włostowski, Radoslaw
Włóka, Adriana
Zawiślak, Maciej
Powiązania:
https://bibliotekanauki.pl/articles/2069922.pdf
Data publikacji:
2021
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
hydropower plant multi-criterial designing
fish protection
environmental protection
CFD
Opis:
A small hydro-power plant designing in aspect of current legislation is an interdisciplinary problem because of the fact that efficiency priority is not so important as ecological one. In this article the regulations concerning permissions for plant operation are discussed. The small hydro-power plant designing criteria are presented in the aspect of a plant impact on the river ecosystem.
Źródło:
Rocznik Ochrona Środowiska; 2021, 23; 332--345
1506-218X
Pojawia się w:
Rocznik Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Researches on a photocatalytic device for toxic hydrocarbons removal from IC engine exhausts
Autorzy:
Górniak, Aleksander
Janicka, Anna
Michniewicz, Daniel
Molska, Justyna
Skrętowicz, Maria
Świeściak, Joanna
Włostowski, Radoslaw
Zawiślak, Maciej
Powiązania:
https://bibliotekanauki.pl/articles/133581.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
photocatalysis
engine exhaust
vehicle interior
public health
fotokataliza
spaliny silnikowe
wnętrze pojazdu
zdrowie publiczne
Opis:
Hydrocarbons, especially aromatic volatile organic compounds (AVOCs) and polyaromatic hydrocarbons (PAHs), emitted by IC engines, indisputably have a negative impact on the environment and public health. Even though current legislation strongly impacts on their low concentration in the exhausts, not quantity but the quality of those substances determines fumes toxicity. The paper presents results of the researches on a photocatalytic device dedicated to BTX (benzene-toluene-xylene) removal from IC engine exhausts, which can be applied in a vehicle cabin ventilation system. According to the results, the system is able to decrease toxic compounds concentration (caused by mobile emission sources) in inlet-air delivered to the vehicle interior. In effect, the system application reduces the users of a vehicle to exposure on contaminants.
Źródło:
Combustion Engines; 2019, 58, 4; 151-155
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

    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