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Wyświetlanie 1-3 z 3
Tytuł:
Analysis of shaft wear in turbocharges of automotive vehicles
Autorzy:
Hadryś, Damian
Bąkowski, Henryk
Stanik, Zbigniew
Kubik, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/375421.pdf
Data publikacji:
2019
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
charging
internal combustion engine
turbocharger
friction
lubrication
ładowanie
silnik spalinowy
turboładowanie
tarcie
smarowanie
Opis:
The article presents the results of the investigations of turbocharger shaft bearing using different kinds of lubrication conditions (dry friction and lubrication with different kind of oils). In particular, the wear of the turbocharger shaft surface was evaluated. One of the most frequent failures is the seizure of the turbocharger shaft in the slide bearing, causing its rotation, which leads to destruction of the assembly and costly repairs. On the basis of the conducted tests, it was found that the average value of representative breaks surface on the turbocharger shaft are reduced using of a less viscous oil. Similar situation was seen using new oil instead overworked oil – it had an influence on the value of diameter of breaks.
Źródło:
Transport Problems; 2019, 14, 3; 85-95
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Probabilistic model for airport runway safety areas
Autorzy:
Szabo, S.
Vittek, P.
Kraus, J.
Plos, V.
Lališ, A.
Štumper, M.
Vajdova, I.
Powiązania:
https://bibliotekanauki.pl/articles/374515.pdf
Data publikacji:
2017
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
take-off
landing
runway
safety area
probability
distance
start
lądowanie
pas startowy
obszary bezpieczeństwa
prawdopodobieństwo
odległość
Opis:
The Laboratory of Aviation Safety and Security at CTU in Prague has recently started a project aimed at runway protection zones. The probability of exceeding by a certain distance from the runway in common incident/accident scenarios (take-off/landing overrun/veer-off, landing undershoot) is being identified relative to the runway for any airport. As a result, the size and position of safety areas around runways are defined for the chosen probability. The basis for probability calculation is a probabilistic model using statistics from more than 1400 real-world cases where jet airplanes have been involved over the last few decades. Other scientific studies have contributed to understanding the issue and supported the model’s application to different conditions.
Źródło:
Transport Problems; 2017, 12, 2; 89-97
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Environmental footprints of current and future electric battery charging and electric vehicles in Poland
Autorzy:
Burchart-Korol, Dorota
Folęga, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/1841223.pdf
Data publikacji:
2020
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
electric passenger car
battery charging
carbon footprint
water footprint
elektryczny samochód osobowy
ładowanie akumulatora
ślad węglowy
ślad wodny
Opis:
This paper presents the results of environmental footprints of the life cycle of electric passenger cars, with a current and future electric battery charging analysis in Poland. The shares of the sources of electricity generation in the energy systems of Poland in the years 2015–2050 were used to perform the chosen environmental footprints of current and future electric car battery charging. This article discusses the water and carbon footprints of electric passenger cars in Poland. The carbon footprint was determined usin the Intergovernmental Panel on Climate Change (IPCC) method. The water footprint was calculated using the Hoekstra method. The environmental footprints were provided by the SimaPro 8 package with the Ecoinvent 3 database. The obtained results showed that the carbon footprint and water footprints of electric passenger cars in Poland are primarily related to the type of electricity used to charge electric car batteries. The results showed that current and future carbon footprint indicators of electric cars in Poland are lower than those for petrol cars, but the water footprint indicators of electric cars are higher than those for petrol cars. In the case of petrol cars, the main determinant of the carbon footprint is direct emission during the exploitation stage and the main determinant of the wate footprint is car production.
Źródło:
Transport Problems; 2020, 15, 1; 61-70
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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