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Wyszukujesz frazę "air pressure" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Empirical study of the effect of the air filter on the performance and exhaust emissions of a diesel engine
Autorzy:
Dziubak, Tadeusz
Karczewski, Mirosław
Dziobek, Ilona
Powiązania:
https://bibliotekanauki.pl/articles/24202461.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
internal combustion engine
air filter pressure drop
engine power
specific fuel consumption
exhaust emissions
silnik spalinowy
spadek ciśnienia w filtrze powietrza
moc silnika
jednostkowe zużycie paliwa
emisja spalin
Opis:
The results of an experimental study of the effect of the pressure drop of the air filter pf on the operating parameters and exhaust emissions of a modern CI internal combustion engine of a truck equipped with an electronically controlled power system are presented. The tests were carried out for an air filter with a clean filter cartridge Δpf0 = 0.58 kPa and with a cartridge contaminated after a service mileage (about 50 thousand km) ΔpfD = 2.024 kPa. In each test, engine performance, exhaust emissions and relative change in emissions were determined: CO, NOx, HC, CO2, H2O. It was found that an increase in the filter resistance pf causes a decrease in the filling degree by 12%, engine useful power by almost 10%, exhaust gas temperature by a maximum of 30oC and an increase in specific fuel consumption by almost 5%. Air filter resistance has no significant effect on NOx emissions and HC concentration. There is a reduction in H2O emissions by up to 7%, CO by up to 13% and CO2 by up to 4%, and an increase in oxygen emissions by 15%, depending on operating conditions.
Źródło:
Combustion Engines; 2023, 62, 2; 94--111
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Problems of selecting filter partition in passenger car engine intake air filters
Autorzy:
Dziubak, Tadeusz
Bąkała, Leszek
Powiązania:
https://bibliotekanauki.pl/articles/2097515.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
combustion engines
air filter
pleated filter cartridge
separation speed
pressure drop
dust absorption coefficient
silniki spalinowe
filtr powietrza
plisowany wkład filtrujący
prędkość separacji
spadek ciśnienia
współczynnik chłonności pyłu
Opis:
The aim of this study was to verify the criteria for selecting pleated filter partitions used in passenger car engine filters. The paper presents the problem of optimizing pleated air filters in the direction of minimizing pressure drop, which is the source of engine energy losses. Two criteria for selection of a paper filter partition for specific operating conditions of the filter and the engine are presented: criterion of permissible separation speed and criterion of permissible pressure drop. The actual filtration area of 44 paper pleated filter elements used in passenger cars and the air stream flowing through the filter were determined, which made it possible to calculate separation speed. In 62% of the analyzed filter inserts, the calculated separation speeds are within the speed range recommended by the constructors, ʋFmax = 0.06-0.12 m/s. Exceeding permissible separation speed ʋFmax = 0.12 m/s was found mainly in supercharged engines. Negative effects of engine operation with an air filter with too small separation area are presented, in the form of increased pressure drop and energy loss of the engine as well as shorter car mileage to reach permissible pressure drop.
Źródło:
Combustion Engines; 2021, 60, 2; 44--58
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Properties of material with nanofiber layer used for filtering the inlet air of internal combustion engines
Autorzy:
Dziubak, Tadeusz
Powiązania:
https://bibliotekanauki.pl/articles/134154.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
engine
air filter
filtration materials
nanofiber filter media
filtration efficiency
filtration performance
pressure drop
dust mass loading
silnik
filtr powietrza
materiały filtracyjne
nanowłókniste media filtracyjne
skuteczność filtracji
wydajność filtracji
spadek ciśnienia
współczynnik chłonności pyłu
Opis:
Nanofiber properties, and the possibilities of their application in industry, including the production of car air intake filtration materials for vehicle engines are discussed. The attention is paid to the low efficiency of standard filtration materials based on cellulose in the range of dust grains below 5 μm. The properties of filtration materials with nanofibers addition are described. The conditions, and methodology of material filter paper tests at the station with particle counter were developed. Studies on the filtration characteristics, such as: efficiency, accuracy, as well as pressure drop of filtration materials differing in structure were made: standard paper, cellulose, and these materials with the addition of nanofibers. These are commonly used filter materials for filter inserts production of car air intake systems. Test results show significantly higher values of the efficiency, and filtration accuracy of materials with nanofiber layer addition of dust grains below 5 μm in comparison with standard filter paper. It was found that there are 16 μm dust grains in the air flow behind the insert made out of cellulose, which may be the reason for the accelerated wear of the engine's "piston-piston ring-cylinder" association. Lower values of dust mass loading coefficient km for filtration materials with the addition of nanofiber layer, in relation to standard filter paper were observed.
Źródło:
Combustion Engines; 2019, 58, 2; 66-75
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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