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    Wyświetlanie 1-5 z 5
    Tytuł:
    On possible supplying ship diesel engines with alternative fuels (mixtures of diesel oils and vegetable oils or their esters). Preliminary report
    Autorzy:
    Krzyżanowski, J.
    Witkowski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/259181.pdf
    Data publikacji:
    2004
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    ship diesel engine
    alternative fuel oils
    ecology
    Opis:
    The paper presents introduction to the research on possible supplying ship diesel engines with mixtures of diesel oils and vegetable oils or their esters with accounting for ecological aspects, i.e. exhaust gas purity. Characteristics of vegetable oils and their esters are compared with those of diesel oils; some consequenŹces of their application to diesel engines, mainly for their working process and exhaust gas content, are indicated. Also, influence of combusting their mixtures with diesel oils are discussed in the same context. Scope of the planned research project is shortly presented.
    Źródło:
    Polish Maritime Research; 2004, 4; 28-30
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Research on influence of condition elements the supercharger system on the parameters of the marine diesel engine
    Autorzy:
    Witkowski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/244429.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    ship diesel engine
    turbocharger system
    active experiment
    air filter
    compressor
    air cooler
    Opis:
    This paper presents the issues related to the impact of the technical condition elements of the turbocharger system on the parameters of marine diesel engine. Turbocharger system, in addition to the injection system has a significant impact on the quality of the working process, the economics and reliability of the engine. Contamination of elements of the turbocharger system are the most common faults (24.7% of all damage to marine engines). Contamination the following relates to elements: air filters, compressor, air cooler, scavenging system elements and turbine. The detailed data follows that the contamination are usually in: flow channels supercharger – 56%, turbine flow channels – 22%, air cooler – 11%, air filter – 6%, scavenging system elements – 4%, other elements – 1%. The technical condition influence of air filter, compressor and air cooler was analyzed. The analysis was supported by the results of their own research, carried out in the laboratory on the marine diesel engine, four– stroke 3AL25/30 SULZER, supercharged turbocharger VTR160N Brown Boveri. The research was performed in the form of an active experiment to simulate contamination of particular elements of the turbocharging system. Technical condition change of the air filter, the air compressor and the air cooler have been investigated.
    Źródło:
    Journal of KONES; 2013, 20, 1; 375-380
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Research on influence of selected control parameters of the injection system marine diesel engine on its exhaust gas toxicity
    Autorzy:
    Witkowski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/246698.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    ship diesel engine
    injection system
    heavy fuel oil
    control parameters
    exhaust gas toxicity
    Opis:
    This paper devoted to pollution of the atmosphere due marine diesel engines in operation. In the paper presented are results of the investigations carried out in the Gdynia Maritime Academy laboratory with the use of a ship diesel engine, one-cylinder, two-stroke, crosshead of longitudinal scavenging, which was loaded by means of the water brake. This diesel engine combusting heavy fuel oil IF 40. The test-involved effect of two selected control parameters of fuel injection system ship diesel engine: fuel injection pressure and injection advance angle. Both selected control parameters were changed during the experiment separately, each of them three times. And so: changing the fuel injection pressure - for three selected values: 18, 22 and 26 MPa; changing the fuel injection advance angle - for three selected values: -10 centigrade, -13 centigrade and -16 centigrade before the piston's top dead centre (BTDC). The measurements were performed within the wide range of engine load at the permanent rotational speed of 220 rpm. For each of the above selected values six measurements were performed at the following engine loads: 25%, 40%, 50%, 60%, 70% and 80% nominal loads. Control parameters to change the injection pump and injector engine, during operation of the engine, by means of a supplementary-scaled instrumentation of the injector and injection pump. Owing to this is was not necessary to stop the engine before each successive test cycle. This way of realization of the measurements guaranteed running them in steady conditions. The elimination of influence of possible disturbances witch could arise from multiple starting and stopping the engine improved accuracy and reliability of the obtained results.
    Źródło:
    Journal of KONES; 2012, 19, 2; 551-556
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Problematyka zanieczyszczenia atmosfery przez statki wykorzystywane w transporcie morskim
    The problematics of atmospheric pollution by ships used in maritime transport
    Autorzy:
    Witkowski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/310932.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Naukowo-Wydawniczy "SPATIUM"
    Tematy:
    transport morski
    zanieczyszczenie atmosfery
    ograniczenie emisji związków toksycznych
    silnik okrętowy spalinowy
    maritime transport
    atmospheric pollution
    reduction of toxic emissions
    ship diesel engine
    Opis:
    W artykule omówiona została problematyka zanieczyszczenia atmosfery związkami toksycznymi emitowanymi przez statki, głównie przez okrętowe silniki tłokowe, stosowane powszechnie zarówno do napędu głównego statków jak i w elektrowniach statkowych. Zarówno rozwój transportu morskiego jak i troska o środowisko naturalne spowodowały, że w latach 90-tych ubiegłego wieku podjęto w Międzynarodowej Organizacji Morskiej (IMO) prace nad aneksem VI do konwencji MARPOL 73/78. Poprzez stosowanie w praktyce określonych w aneksie norm ograniczenia emisji związków toksycznych, oczekuje się wymiernych korzyści dla środowiska. W artykule na podstawie omówionych wyników badań własnych wskazano, jako jedną z metod ograniczenia emisji do atmosfery związków toksycznych, zasilanie silników okrętowych mieszaninami paliwa ropopochodnego z estrami oleju roślinnego. W badaniach stosowano mieszaninę okrętowego oleju napędowego (MDO) z estrem oleju rzepakowego (RME) w różnych proporcjach.
    The paper discusses problems of air pollution by toxic compounds emitted by ships, mainly by marine piston engines, which are commonly used both for main propulsion of ships and in power plants ships. Both, the development of marine transport and care for the environmental caused that in the 90s of the last century in the International Maritime Organization (IMO) has been undertaken work to develop the Annex VI of MARPOL 73/78. Through using in practice, standards reduce emissions of toxic compounds, which it is set out in the Annex, environmental benefits are expected. In the paper, on the basis discussed of own research results, indicated as one way to reduce atmospheric emissions of toxic compounds, combustion in marine diesel engine mixtures of petroleum fuel from vegetable oil esters. In the research mixture of marine diesel oil (MDO) with an of rape-seed oil methyl ester (RME) in different proportioned was used.
    Źródło:
    Autobusy : technika, eksploatacja, systemy transportowe; 2016, 17, 6; 468-473
    1509-5878
    2450-7725
    Pojawia się w:
    Autobusy : technika, eksploatacja, systemy transportowe
    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
      Wyświetlanie 1-5 z 5

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