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    Wyświetlanie 1-9 z 9
    Tytuł:
    A Study on applying the Catfish Biofuel in The Mekong Delta for The Marine Diesel Engine
    Autorzy:
    Quan, P. W.
    Phuoc, H. T.
    Powiązania:
    https://bibliotekanauki.pl/articles/115953.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Ship Propulsion
    marine diesel engine
    Catfish Biofuel
    Mekong Delta
    diesel oil
    Exhaust Gas
    Petrol Oil Replacement
    biofuel
    Opis:
    The manufacturing of Catfish products has been developed rapidly in the Mekong delta. Every year, about 1.2 million tons of Catfish and 150,000 tons of biofuel are produced. The biofuel B100 manufactures in Mekong delta satisfies the America standard ASTM D6751; EURO EN 14214 or Vietnamese standard TCVN 7717. Mekong delta, a lower land area, has a large inland water way system with around 100.000 river boats that operate with marine diesel engine. Using the biofuel for the marine diesel engine in area will reduce the HC, CO, SOx and NOx emission to the environment. Therefore, with a study on applying the catfish biofuel, it will reduce the climate change by the increasing of sea water level and save energy by using green energy to replace petrol oil.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2015, 9, 4; 523-529
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of lubricating properties of titan truck plus 15W40 oil used in marine diesel engines
    Autorzy:
    Młynarczak, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/241944.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    marine diesel engine
    lubricating oil
    lubricating properties
    oil deterioration
    Opis:
    The paper presents the results of lubricating properties tests of Titan Truck Plus 15W40 motor oil. Tested oil was used in Caterpillar 3512B high-speed engines, which propelled the tug boat. The lubricating properties parameters were determined for fresh oil and used oil samples. Builder of Caterpillar 3512B engine recommends lubricating oil change after every 1000 hours of operation. Lubricating oil samples were taken from engine oil system after 342 hours of service and after 1024 hours of service, it means just before lubricating oil change. The test results were collected by means of a four-ball extreme pressure tester T-02 according to Polish Norm PN-76/C-04147. The following lubricating properties parameters were determined: weld load Pz, maximum nonseizure load Pn, seizure load Pt and load wear index Ih. Investigations showed that for used oil samples maximum nonseizure load and seizure load increase but weld load and load wear index decrease. These results indicate that used oil has higher boundary layer resistance (better antiwear properties) but worse antiseizure properties, which are determined in hard working conditions of the sliding node elements. In author’s opinion, worsening of the antiseizure properties results of solid impurities presence, which come from lubricating oil deterioration process. To verify that thesis the detail analysis of the tested oils chemical content has been made. Spectrol Q100 spectrometer, which can specify content of 24 chemical elements in the lubricating oils was used for this purpose.
    Źródło:
    Journal of KONES; 2014, 21, 1; 163-168
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of oil refilling strategy on the amount of oil in trunk piston marine diesel engine lubricating system
    Autorzy:
    Młynarczak, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/246111.pdf
    Data publikacji:
    2011
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    marine diesel engine
    lube oil
    refilling strategy
    Opis:
    The issues connected with the amount of lube oil in engine oil system are real problems in marine diesel engines maintenance process. The amount of lube oil in circulation influences its quality and consequently the wear of lubricated parts. That amount still changes and is connected with lubricating oil refilling strategy. The results of simulation carried out for SULZER 8S20U and PIELSTICK 12PC2-5V engines allowed to determine the influence of lubricating oil refilling strategy on the amount of lube oil in circulation. Frequent topping-up at regular intervals can be arranged to maintain the sump working capacity at the chosen percentage of the design maximum (for example 90 per cent), while a significantly delayed topping-up might allow the working capacity to be reduced to as low as about 50 per cent of the maximum. Thus a significantly reduced lubricant amount may have a disadvantageous influence on engine elements wear (i.e. piston rings, cylinder liners) and consequently cause the growth of the engine overhaul costs, although in far perspective, it would be difficult to connect that fact with the amount of oil in circulation. On the other hand in small output trunk piston engines without sump tanks, delayed topping-up and operation with minimum oil level could give some economic and ecological advantages resulting from reduced oil consumption. But in marine conditions (rolling and trim changes) it would be very hazardous for the engine safety operation.
    Źródło:
    Journal of KONES; 2011, 18, 3; 287-291
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment of the degree of deterioration of trunk piston engine oil used in the engine 6AL20/24
    Autorzy:
    Malinowska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/245610.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    engine oil
    lubrication system
    marine diesel engine
    trunk piston engine oil
    viscosity
    flash point
    oil contamination
    Opis:
    The problem of engine oils and lubrication systems of marine diesel engines is an important issue in operation of engines. When considering the problems of exploitation of machines and devices, the lubricating oils are treated as one of the part of engine design, which should perform the functions: control friction between load-bearing surfaces, limit the temperature by carrying away heat from fluid fraction and fuel combustion, reduce corrosion etc. – general protect engine parts. The knowledge of the properties lubricating oils allows for proper selection them for the engine and correct use. During operation, the oil subjects' irreversible process of oil deterioration and it cannot properly fulfil their functions. Therefore important are frequent periodic checks of oil, it means monitoring. The state of the lubricating oil can be characterized by parameters such as viscosity, total base number, acid value, lubricating ability, flash point etc. Changes on these parameters of engine oil during exploitation, cause problems in fulfilling the primary functions of the oil. The target of the paper was the analysis and estimate of properties of trunk piston engine oil – Marinol RG 1240 after various times overwork on the sailing vessel “Dar Młodzieży” on the engine Cegielski-Sulzer 6AL20/24. The results were compared with the values critical and preventive limits and proposed several corrective actions for users the engine 6AL20/24.
    Źródło:
    Journal of KONES; 2016, 23, 4; 319-326
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Emission inventory of exhaust gases from oil - fired ship boilers
    Autorzy:
    Myśków, J.
    Borkowski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/242902.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    ship
    oil-fired boiler
    marine diesel engine
    exhausts emission
    Opis:
    Regulations concerning the limitation of harmful compounds emission contained in exhaust gases become more restrictive. This is observed within regulations regarding land-based installations and also rules applied to ships of global trade fleet. Other restrictions of vessels emissions, enclosed in rules set out in Annex IV of Marpol Convention 73/78 are gradually implemented and establish emission limits for ship engines. The boiler delivers the heat energy required for fuel preparation for main and auxiliary engines - and also by consuming fuel in its combustion chamber becomes and emitter. This article describes the anticipated methodology of the boiler steam efficiency, depending on the main engine installed. Additionally, fuel oil consumption analysis in various steam capacity range performed using the histograms. The histograms were produced on the basis of service reports of similar units, and combining fuel oil consumption with exhaust emission during operation. A vessel engine report includes monthly machinery abstract and is compiled for a ship-owner on the basis of the log book records. Quantified exhaust emission from auxiliary oil fired boiler contributes determination the overall emissions from a ship.
    Źródło:
    Journal of KONES; 2012, 19, 4; 487-494
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Possibilities for Improving the Cooling Systems of IC Engines of Marine Power Plants
    Autorzy:
    Moshentsev, Yuryi
    Gogorenko, Oleksiy
    Dvirna, Olha
    Powiązania:
    https://bibliotekanauki.pl/articles/2201716.pdf
    Data publikacji:
    2022
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    central cooler
    charge air cooler
    cooling system
    heat transfer surface
    marine diesel engine
    oil coolers
    Opis:
    Modern cooling systems for large ships are quite complex. As a rule, such systems are common (combined) for the main and auxiliaries engines. With the auxiliary engines running constantly, even when parked, this system design allows to keep it warm and ready for a quick start of the main engines at any time. Currently, various schemes of such systems are used, including those that are irrational from our point of view. At the same time, there are systems whose schemes are quite consistent with our idea of the rational forms of such structures. It is important to note, and it is saying about it in an article, that such schemes may have a number of significant differences, but at the same time they will comply with the rationality principle if certain rules for the formation of such systems are followed. These schemes will have close compactness. It is also important that there is the possibility of further improvement of such schemes based on certain rules. This improvement is possible due to the introduction of additional heat dissipaters and the organization of appropriate chains of heat sources and heat dissipaters. The article discusses various options for rational schemes of the cooling system for the same ship power plant, as well as the possibility of further improvement of this scheme. It is shown that an increase in the number of coolants of the internal circuit coolant from one to three can reduce the total mass of the heat exchanger cores by 18 %.
    Źródło:
    Advances in Science and Technology. Research Journal; 2022, 16, 3; 183--192
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The increase of operational safety of ships by improving diagnostic methods for marine diesel engine
    Autorzy:
    Witkowski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/117520.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    diagnostic methods
    marine diesel engine
    main engine
    ship propulsion
    operational safety
    injection system
    damage
    fuel oil
    Opis:
    This article shows the importance of the diagnostic improvement methods of marine engines to boost the economy and safety of operation of marine cargo ships. The need to implement effective diagnostic methods is justified by presenting statistical data of marine diesel engines failure and the cost of their operation. Based on the own research has been proven, for the chosen example, that indicator diagrams and analysis of indicated parameters have limited utility in the diagnosis of damages of marine engine, although this is a method commonly used in operational practice. To achieve greater diagnostic effectiveness, when, based on indicator diagrams, are calculated and then the characteristics of heat release is analyzed - net of heat release characteristics and the intensity of the heat release, it was demonstrated. This procedure is particularly effective in the diagnosis of damage of injection system components marine diesel engine.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2017, 11, 2; 317-321
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Charakterystyki tribologiczne oleju smarowego eksploatowanego w silniku okrętowym
    Tribological characteristics of lubricating oil used in marine diesel engine
    Autorzy:
    Młynarczak, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/189846.pdf
    Data publikacji:
    2014
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    olej smarowy
    silnik okrętowy
    aparat czterokulowy
    obciążenie zacierające
    lubricating oil
    marine diesel engine
    four-ball apparatus
    seizing load
    Opis:
    W artykule przedstawiono charakterystyki tribologiczne oleju obiegowego Titan Truck Plus 15W40 użytkowanego w bezwodzikowym silniku okrętowym Caterpillar 3512B. Badania wykonano na aparacie czterokulowym T-02 zgodnie z PN-76/C-04147. Producent silnika Caterpillar 3512B zaleca wymianę oleju co 1000 godzin. Na Rys. 2–5 przedstawiono przebiegi zmian momentu tarcia i temperatury przy narastającym obciążeniu elementów węzła tarcia smarowanych różnymi próbkami oleju. Próbki oleju pobierano z systemu smarnego silnika w zalecanym okresie eksploatacji. Na podstawie uzyskanych charakterystyk wyznaczono obciążenia zacierające. Stwierdzono, iż wartość obciążenia zacierającego nie jest miarodajnym wskaźnikiem oceny smarności oleju. Istotny jest przebieg zmian momentu tarcia w całym zakresie obciążenia w celu uzyskania odpowiedzi na pytanie, jaki przebieg ma proces niszczenia i odbudowywania warstwy granicznej w funkcji czasu.
    The paper presents tribological characteristics of Titan Truck Plus 15W40 lubricating oil used in trunk piston marine diesel engine Caterpillar 3512B. The test results were collected by means of a four-ball extreme pressure tester T-02 according to PN-76/C-04147. The manufacturer of Caterpillar 3512B engine recommends lubricating oil change after every 1000 hours of operation. Figures 2 to 5 present the moment of friction and temperature courses for an increasing load of the friction nodes lubricated by different oil samples. Lubricating oil samples were taken from an engine oil system in recommended operating period. Based on obtained characteristics, seizure points Pt were determined. It was found that seizure point is not an authoritative index to asses lubricating oil. The essential is the change of friction moment in whole load range that makes it possible to determine the boundary layer destruction and its regeneration process in time.
    Źródło:
    Tribologia; 2014, 3; 143-151
    0208-7774
    Pojawia się w:
    Tribologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Conception of the device for monitoring the fuels doses evennes of the marine diesels engines
    Koncepcja urządzenia do monitorowania równomierności dawek paliwa OTSS
    Autorzy:
    Bruski, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/222622.pdf
    Data publikacji:
    2011
    Wydawca:
    Akademia Marynarki Wojennej. Wydział Dowodzenia i Operacji Morskich
    Tematy:
    okrętowy tłokowy silnik spalinowy
    drgania skrętne
    linia wałów
    system zasilania paliwem
    marine diesel engine
    torsional vibrations
    shafting
    fuel oil feeding system
    Opis:
    In the paper a proposal to use the method of the spectral analysis of vibration of torsion lines of embankments for signaling was described qualities of work of the arrangement of feeding with the fuel oil of the marine diesel engine. Loss of the evenness of the dose of fuel was treated as the first signal of arising damage. In the presented conception devices were applied previously diagnostic measure drawn up (SWH — rate of harmonic contents). The paper is finishing the description of the action of discussed device.
    W artykule przedstawiono propozycję wykorzystania metody analizy widmowej drgań skrętnych linii wałów do sygnalizowania jakości pracy układu zasilania paliwem okrętowego tłokowego silnika spalinowego. Utratę równomierności dawki paliwa potraktowano jako pierwszy sygnał powstającego uszkodzenia. W przedstawionej koncepcji zastosowano uprzednio opracowaną miarę diagnostyczną (SWH — współczynnik zawartości harmonicznych). Artykuł kończy opis działania omawianego urządzenia.
    Źródło:
    Zeszyty Naukowe Akademii Marynarki Wojennej; 2011, R. 52 nr 4 (187), 4 (187); 7-14
    0860-889X
    Pojawia się w:
    Zeszyty Naukowe Akademii Marynarki Wojennej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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