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Wyszukujesz frazę "Morawski, L." wg kryterium: Autor

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    Wyświetlanie 1-6 z 6
    Tytuł:
    The microprocessor device for measurements of torque and rotational speed on the propeller shaft of ship
    Urządzenie do pomiaru momentu i prędkości obrotowej na wale śruby napędowej statku
    Autorzy:
    Morawski, L.
    Szuca, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/158019.pdf
    Data publikacji:
    2007
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    okrętowy układ napędowy
    silnik napędu głównego
    pomiar momentu
    momentomierz
    ship's propulsion unit
    main engine
    torquemeter
    Opis:
    The paper presents the new model of torque meter designed in Gdynia Maritime University and Research-Production Enterprise for Maritime Industry "ENAMOR" Ltd., Gdynia. The general idea of measurement makes use of the torsion angle measured on a shaft section (400 mm) using the photo-optical technique. Torque meter unit is equipped with Programmable Logic Device (PLC) for calculations, external parameters acquisition (ex.: speed, trim, shaft generator power etc.) and measured data storage in memory. This unit (bearing a symbol ETNP-8) has also possibility to measure instantaneous fluctuations of the torque and engine rotational speed as a function of the shaft rotation angle. Displaying time-histories of those parameters on the monitor screen of an external PC computer gives the operator an opportunity to make a preliminary performance assessment for each individual cylinder in the engine, and for the drive system as a whole. As an example, the analysis and processing of the measured torque and rotational speed fluctuations are presented. The measurements were done on the training ship m/s Horyzont II, owned by the Gdynia Maritime University.
    Referat przedstawia urządzenie do pomiaru momentu i prędkości kątowej na wale śruby, wykorzystujące fotooptyczny pomiar kąta skręcenia wału. Na podstawie mierzonych czasów trwania zębów i szczelin dwóch tarczy zębowych wyznaczana jest prędkość obrotowa, moment i moc na wale oraz teoretyczne zużycie paliwa. Dołączony do urządzenia zewnętrzny komputer PC, z odpowiednim oprogramowaniem umożliwia pomiar wartości chwilowych momentu i prędkości obrotowej w funkcji kąta położenia wału korbowego. Pomiary wartości chwilowych zawierają informację diagnostyczną o pracy układu napędowego statku.
    Źródło:
    Pomiary Automatyka Kontrola; 2007, R. 53, nr 12, 12; 5-7
    0032-4140
    Pojawia się w:
    Pomiary Automatyka Kontrola
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study on fuel injector with Hydraulic Amplifier (HADI) on the example of Mercedes-Benz Actros vehicle with OM 471.9 engine
    Autorzy:
    Mórawski, Ł
    Trawiński, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/242432.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    diesel engine
    common rail systems
    fuel injectors
    injection rate modulation
    boot injection
    silnik Diesla
    system common rail
    wtryskiwacze paliwa
    modulacja szybkości wtrysku
    rozruch silnika
    Opis:
    One of the recent trends in heavy-duty engines has been the introduction of common rail injector with hydraulic amplifier (HADI − Hydraulically Amplified Diesel Injector) capable of considerable fuel pressure injection increase in reference to fuel pressure prevailing in rail of common rail fuel system. An example of a solution of this type of injectors is the two-valve CRIN4 injectors manufactured by Bosch. They allow the control of the fuel flow rate during injection process and therefore have an impact on the combustion process. In this article, advantages related to their use are described, which allow the engines with such injectors to meet the limits of the admissible content of toxic compounds in the exhaust gases defined in the EURO VI standard. An experimental study of the operation of the Bosch IV generation common rail system was performed on the Mercedes-Benz Actros. During measurement engine load, engine speed, waveforms (electric currents) controlling operation of the selected injectors, fuel pressure in the rail and the control current of high pressure pump control valve (metering unit) were registered. Interpretations of recorded waveforms were made, indicating the areas of application of the various modes operation. The use of CRIN4 injectors for the rapid reduction of fuel pressure in rail was observed, which supports the metering unit (ZME) for pressure control.
    Źródło:
    Journal of KONES; 2018, 25, 1; 307-316
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The ship control system for trajectory tracking experiments with physical model of tanker
    Autorzy:
    Morawski, L.
    Vinh, N. C.
    Pomirski, J.
    Rak, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/258464.pdf
    Data publikacji:
    2007
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    nonlinear control
    ship control
    track-keeping
    Opis:
    This paper presents a cascade system which stabilizes the transverse deviation of the ship in relation to the set path. The ship’s path is determined as a broken line with specified coordinates of way points. Three controllers are used in the system. The primary controller is the trajectory controller. It generates the set value of heading for the course control system or angular velocity for the turning control system. The course control system is used on the straight line of the set trajectory while the turning controller is used during a change of the set trajectory segment. The characteristics of the nonlinear controllers are selected in such a way that the properties of the control system with the rate of turn controller are modelled by the first-order inertia, while the system with the course keeping controller is modelled by a second-order linear term. The presented control system was tested in Matlab-Simulink environment. The results of tests performed on a lake are presented and discussed.
    Źródło:
    Polish Maritime Research; 2007, S 2; 49-53
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    New technologies in transport in the face of challenges of economy 4.0
    Autorzy:
    Kolasińska-Morawska, K.
    Sułkowski, Ł.
    Morawski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/198163.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    transport
    4.0 economy
    new technology
    innovations
    Internet of Things
    gospodarka 4.0
    technologia nowoczesna
    innowacje
    Internet przedmiotów
    Opis:
    Nowadays, the dynamics of variability marked by technologisation and digitisation cannot be underestimated. New technologies identified with Economy 4.0 affect almost every dimension of the modern world. The level of competitiveness of modern economies is determined by the implementation and diffusion of innovations based on new technologies. Artificial Intelligence, the Internet of Things (IoT), the Internet of Everything (IoE), hyperconnectivity, cloud computing applications and services, Big Data Analytics (BDA), Big-Data-as-a-Service (BDaaS), automation and robotisation are just a few of the technologies that the authors found worth looking at in more detail with regard to transport. Digital transformation is also a new opportunity as well as a challenge for business. This paper indicates the metamorphosis that transport has undergone as a result of the injection of new technologies. The presented material has been collected in the course of the source research carried out using the idiographic method. A critical analysis of available documents and literature, as well as digital sources, has made it possible to identify the benefits of injecting new technologies in transport as an effect of adaptability to the digital age.
    Źródło:
    Zeszyty Naukowe. Transport / Politechnika Śląska; 2019, 102; 73-83
    0209-3324
    2450-1549
    Pojawia się w:
    Zeszyty Naukowe. Transport / Politechnika Śląska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cavity Ring Down Measurement of the (1, 0) B $\text{}^{2}$Σ$\text{}_{u}^{+}$ - X $\text{}^{2}$Σ$\text{}_{g}^{+}$ Absorption Band of the N$\text{}_{2}^{+}$ Cation
    Autorzy:
    Fulara, J.
    Łapiński, L.
    Morawski, O.
    Prochorow, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1968912.pdf
    Data publikacji:
    1998-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    33.20.Lg
    39.30.+w
    Opis:
    The ultraviolet (1, 0) B $\text{}^{2}$Σ$\text{}_{u}^{+}$ - X $\text{}^{2}$Σ$\text{}_{g}^{+}$ transition in the N$\text{}_{2}^{+}$ cation was measured with the absorption cavity ring down technique. The N$\text{}_{2}^{+}$ cations were produced in a stationary DC discharge in nitrogen under reduced ( ≈ 0.5 Tr) pressure. The weak band due to the (4, 0) A $\text{}^{2}$Π$\text{}_{u}$ - X $\text{}^{2}$Σ$\text{}_{g}^{+}$ transition in the red part of the spectrum was also recorded. Several of the observed transitions correspond to absorptions from the vibrationally excited (ν'=1) states of N$\text{}_{2}^{+}$ and to absorptions from the neutral N$\text{}_{2}$ molecules in the triplet state.
    Źródło:
    Acta Physica Polonica A; 1998, 93, 5-6; 723-730
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of titanium dioxide modification on the antibacterial properties
    Autorzy:
    Rokicka, P.
    Markowska-Szczupak, A.
    Kowalczyk, Ł.
    Kowalska, E.
    Morawski, A. W.
    Powiązania:
    https://bibliotekanauki.pl/articles/778569.pdf
    Data publikacji:
    2016
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    antibacterial properties
    Escherichia coli K12
    modified photocatalysts
    titanium dioxide
    visible-responsive photocatalysts
    Opis:
    Antibacterial properties of 15 titania photocatalysts, mono- and dual-modified with nitrogen and carbon were examined. Amorphous TiO2 , supplied by Azoty Group Chemical Factory Police S.A., was used as titania source (Ar-TiO2 , C-TiO2 , N-TiO2 ;2 and N,C-Ti2 2 calcined at 300°C, 400°C, 500°C, 600°C, 700°C). The disinfection ability was examined against Escherichia coli K12 under irradiation with UV and artificial sunlight and in dark conditions. It has been found the development of new photocatalysts with enhanced interaction ability with microorganisms might be a useful strategy to improve disinfection method conducted under artificial sunlight irradiation. The efficiency of disinfection process conducted under artificial sunlight irradiation with carbon (C-TiO2 ) and carbon/nitrogen (N,C-TiO2 ) photocatalysts was similar as obtained under UV irradiation. Furthermore, during dark incubation, any toxicity of the photocatalyst was noted.
    Źródło:
    Polish Journal of Chemical Technology; 2016, 18, 4; 56-64
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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