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Wyszukujesz frazę "slow-speed engine" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Adjustment of cylinder lubricating oil of marine slow-speed engines
Autorzy:
Van Doan, D.
Murawski, L.
Powiązania:
https://bibliotekanauki.pl/articles/244949.pdf
Data publikacji:
2017
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
cylinder lubricating oil system
slow-speed engine
optimal adjustment
Sulzer diesel engines
układ smarowania cylindrycznego oleju
silnik obrotowy
regulacja optymalna
silnik wysokoprężny Sulzer
Opis:
The article refers to the common task of lubrication system. The fast development of the world's maritime sector, makes competition among countries increasing. Because of the deterioration of the global economy, the shipping companies, ship-owners want to reduce freight rates, to meet safety requirements, as well as improving conditions of exploitation and operating the machines to prevent the pollution of the marine environment. While exploiting the diesel engine in general and Sulzer diesel engines in particular, ship owners are always eager to reduce the operating cost and still ensure the engine running are safe and reliable. Provide an example of how to calculate the amount of cylinder lubricating oil according to the theory of slow-speed marine engines. The article refers to the costs of the operation and exploitation of ship, offer solution to reduce extraction costs by optimizing the amount of lubricating oil for the cylinders. The analyses in the article are based on Sulzer RTA engines. The article also refers to the level of actual lubrication oil for the cylinders of slow-speed marine engines during operation and exploitation based on the practical experience of the chief engineers, who had ever worked with these engines. The optimal adjustment of cylinder lubricating oil of Sulzer RTA diesel engines to reduce the operating cost but still ensure the engine running are safe and reliable and the problems need to be noted in the process of adjustment.
Źródło:
Journal of KONES; 2017, 24, 1; 113-119
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of Nitrogen Oxides Emission Reduction Methods on Specific Fuel Consumption of Marine Diesel Engines
Autorzy:
Herdzik, Jerzy
Powiązania:
https://bibliotekanauki.pl/articles/2069919.pdf
Data publikacji:
2021
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
ship operation
medium speed diesel engine
slow speed diesel engine
emission to atmosphere
nitrogen oxides emission reduction
specific fuel consumption
Opis:
The paper has been presented the methods of nitrogen oxides emission reduction to fulfill the Tier 2 and Tier 3 requirements of the Annex VI of MARPOL Convention. It has been shown the development of marine two-stroke diesel engines and the change of nitrogen oxides emission from 1960 to 2000 and later up to 2020 after the implementation of NOx emission reduction methods. Specific fuel consumption before 2000, and as a prediction and given data in the manufacturers manuals for Tier 3 engines up to 2020, and as only a prediction up to 2030 has been analyzed and elaborated. Impact of nitrogen oxides reduction methods on the specific fuel consumption of the marine diesel engine has been evaluated. Additional emission of some gases to the atmosphere due to the implementation of reduction methods has been determined. EGR and SCR systems have got a lot of imperfections: required to install additional reduction systems (investment cost, required volume in the engine room), need maintenance and operation costs, produced wastes during treatment process. The estimated additional cost is about 0.8 USD/MWh of produced energy, taking into account only the cost of excessive used fuel. The whole increased cost may reach the level two-three times more due to cleaning systems investment costs, their operational cost and waste disposal. It has been the one of the reasons of worsening the transport effectiveness and competitiveness.
Źródło:
Rocznik Ochrona Środowiska; 2021, 23; 279--289
1506-218X
Pojawia się w:
Rocznik Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diagnostic of the piston rod gland’s failure of marine slow speed main engine
Autorzy:
Murawski, L.
Van Doan, D.
Powiązania:
https://bibliotekanauki.pl/articles/244395.pdf
Data publikacji:
2017
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
marine propulsion system
slow-speed main engine
failure of piston-crankshaft system
diagnostic based on vibrations
displacement
stress level
Opis:
The article presents untypical diagnostic of the slow-speed, marine main engine. The engine was newly made-up and checking during mounting process and during sea trial. However, a leak under piston chamber of second cylinder along the piston rod appeared few days after the sea trial. The stuffing box exchange (with the piston rod’s regeneration) did not give expected results − the failure happened again. All geometrical and exploitation parameters was in acceptable range. The ship with main engine was fifth in the series of sister ships. The authors were asked for urgent expert opinion. Mix of different measurements was planned after formulation several hypothesis. Displacements of piston rod and cylinder, a stress level of main engine body, and vibrations level in different points of main engine was performed during short sea voyage. Not a single hypothesis can be considered as the main cause of the failure. It turns out, that a serious failure need not be caused by a single reason. According to snowball theory a sum of small effects, each of them affecting slightly the engine operation, can be a cause of serious failure. In the authors’ opinion, the failure was caused by a sum of relatively slight effects. The probably scenario of the failure process was enunciated. The recommendation for the engine project was formulated: some of the geometrical tolerances should be changed.
Źródło:
Journal of KONES; 2017, 24, 4; 203-210
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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