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Wyświetlanie 1-3 z 3
Tytuł:
3E - A new paradigm for the development of civil aviation
Autorzy:
Orkisz, Marek
Kuźniar, Michał
Powiązania:
https://bibliotekanauki.pl/articles/2097457.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
airplane
electric propulsion
hybrid propulsion
distributed propulsion
reduction of emission exhaust
reduction of noise
decrease of fuel consumption
samolot
napęd elektryczny
napęd hybrydowy
napęd rozproszony
redukcja emisji spalin
redukcja hałasu
zmniejszenie zużycia paliwa
Opis:
Nowadays, in civil aviation, issues related to improving efficiency, reducing the costs of air operations as well as the negative impact of air transport on the environment are of increasing importance. These ideas allow the formulation of the paradigm relating to the development of air transport - ‘more Efficiently, more Economically, more Eco-friendly - 3E’. The article presents in a cross-sectional and synthetic way research conducted by leading scientific centres around the world as well as prototype aviation constructions designed by companies from the aviation industry. Benefits and disadvantages of future propulsions, such as purely electric, hybrid and distributed propulsions, were presented. Conclusions were formulated regarding further possible directions of civil aviation development, taking into account the improvement of its efficiency as well as economic and ecological indicators.
Źródło:
Combustion Engines; 2020, 59, 2; 3--10
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Potentials for NOx and CO2 reduction of combined NSC + passive SCR system in Diesel passenger car application
Autorzy:
Wittka, T.
Holderbaum, B.
Powiązania:
https://bibliotekanauki.pl/articles/133953.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
exhaust aftertreatment
NSC
Selective Catalytic Reduction
SCR
fuel reformer
oczyszczanie spalin
selektywna redukcja katalityczna
Opis:
The stringent pollutant and CO2 emission limitation in upcoming legislation norms for Diesel passenger car applications force the introduction of exhaust aftertreatment systems with maximum purification and energetic efficiency. The state-off-the-art technologies for NOx reduction, NOx storage and reduction catalyst (NSC) and selective catalytic reduction catalyst (SCR), show challenges for robust performance under strongly extended emission relevant operation conditions from cold start to high engine load and speed. One technical solution is the combination of NSC and passive SCR. This paper presents the experimental results obtained in the EUproject “Powerful”. On engine test bench and demonstrator vehicle, an exhaust aftertreatment system combining NSC, passive SCR and fuel reformer technology was developed and experimentally investigated steady-state and on road. The engine independent NSC operation offers potentials for lowered fuel consumption penalty by avoiding engine rich operation. The intrinsic NH3 formation during the NSC regeneration is used for additional NOx conversion on the passive SCR and reduces NOx and CO2 emission.
Źródło:
Combustion Engines; 2014, 53, 2; 68-76
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative analysis of the heat balance results of the selected Tier III-compliant gas-fuelled two-stroke main engines
Autorzy:
Korlak, Kamil
Powiązania:
https://bibliotekanauki.pl/articles/24202453.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
heat balance
two-stroke engine
LNG
liquified natural gas
SCR
selective catalytic reduction
EGR
exhaust gas recirculation
bilans cieplny
silnik dwusuwowy
skroplony gaz ziemny
selektywna redukcja katalityczna
recyrkulacja spalin
Opis:
Two-stroke engines are distinguished by the highest overall efficiency among all main engines. This is not only due to the low speed, and large piston stroke, but also to the high combustion temperature, which results in an increase in nitrogen oxides (NOx) emission. Technical solutions applied to bring main engines into compliance with current NOx emission standards set by the Tier III limits include the use of SCR and EGR systems, the implementation of the Otto cycle, and the application of liquified natural gas (LNG) as the low-emission fuel. Impact of the available Tier III-compliant technologies on the heat balance results is analysed using the example of the currently most popular dual-fuel main engines, i.e. WinGD X92DF and MAN G95ME-C10.5-GI. The possibilities of waste heat recovery in the electricity generation process and thereby improving the ship energy efficiency are discussed.
Źródło:
Combustion Engines; 2023, 62, 2; 24--28
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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