Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "Zadrąg, R." wg kryterium: Autor

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-8 z 8
    Tytuł:
    Creating a ranking of diagnostic parameters for the dynamic process of marine combustion engine in the aspect of multi-criteria evaluations
    Autorzy:
    Zadrąg, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/2073645.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    diagnostic
    marine diesel engine
    exhaust gas toxicity
    multi-equation models
    diagnostyka
    silnik Diesla
    toksyczność spalin
    modele wielorównaniowe
    Opis:
    The change of some of the engine’s structural parameters affects the change of toxic compound emission in exhaust gases. It mainly applies to the damage sustained by the charge exchange system as well as the fuel system and the engine supercharging system. These changes are definitely higher during dynamic states and the related transient states. As such, it is possible to speak of a diverse sensitivity of the diagnostic parameters on the exact same excitations which come from the structure of the engine but are realized in other states of load. In the paper presented is the diagnostic model of an engine, based on the theory of multi-equation models, in which the diagnostic symptoms are the indices and characteristics of exhaust gas compound emissions. For the sake of this paper, the modal value of the structure parameters was assumed to be the change in the angle of advance of the fuel injection. The diagnostic model of the engine was supplemented with the results of research conducted on a station equipped with a single cylinder CI test engine. In previous works of the author, the information capacity index method (the Hellwig method) was suggested for the measurement of the sensitivity of a diagnostic parameter. Based on this method, a ranking of diagnostic parameters can be created, which divides the collection of diagnostic transients into stimulators, destimulators and nominants. This normalization of the collection seems to be helpful during making a diagnostic decision.
    Źródło:
    Journal of Polish CIMEEAC; 2016, 11, 1; 211--218
    1231-3998
    Pojawia się w:
    Journal of Polish CIMEEAC
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Technical state assessment of charge exchange system of self-ignition engine, based on the exhaust gas composition testing
    Autorzy:
    Rudnicki, J.
    Zadrąg, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/258598.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    diagnostic model
    self-ignition engine
    exhaust gas components
    artificial neural networks
    Opis:
    This paper presents possible use of results of exhaust gas composition testing of self - ignition engine for technical state assessment of its charge exchange system under assumption that there is strong correlation between considered structure parameters and output signals in the form of concentration of toxic compounds (ZT) as well as unambiguous character of their changes. Concentration of the analyzed ZT may be hence considered to be symptoms of engine technical state. At given values of the signals and their estimates it is also possible to determine values of residues which may indicate a type of failure. Available tool programs aimed at analysis of experimental data commonly make use of multiple regression model which allows to investigate effects and interaction between model input quantities and one output variable. Application of multi-equation models provides great freedom during analysis of measurement data as it makes it possible to simultaneously analyze effects and interaction of many output variables. It may be also implemented as a tool for preparation of experimental material for other advanced diagnostic tools such as neural networks which , in contrast to multi-equation models, make it possible to recognize a state at multistate classification and - in consequence – to do diagnostic inference. Here , these authors present merits of application of the above mentioned analytical tools on the example of tests conducted on an experimental engine test stand.
    Źródło:
    Polish Maritime Research; 2017, S 1; 203-212
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Multiequation models as diagnostic tools for measuring the operational fluidity of the container handling terminal
    Autorzy:
    Zadrąg, R.
    Pac, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/2073606.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    multi-equation models
    simulation
    container terminal
    modele wielorównaniowe
    symulacja
    terminal kontenerowy
    Opis:
    The article presents the continuation of the authors’ research on the problem of the operational fluidity of cargo handling sea terminals, based on the example of the DCT. The article presents a solution based on the multiequation models and applied to analyze the operational fluidity of terminals in the transshipment and feeder relation. To provide a solution to the problem of the functioning of sea-land supply chains at the terminal, the GRETL software has been applied.
    Źródło:
    Journal of Polish CIMEEAC; 2017, 12, 1; 125--137
    1231-3998
    Pojawia się w:
    Journal of Polish CIMEEAC
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The identification of toxic compound emission sensitivity as a diagnostic parameter during dynamic processes of the marine engine
    Autorzy:
    Zadrąg, R.
    Kniaziewicz, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/2073657.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    diagnostic
    theory of experiments
    marine diesel engine
    exhaust gas toxicity
    multi-equation models
    Opis:
    Changing some parameters of the engine structure alters the emission of harmful components in the exhaust gas. This applies in particular to the damage of charge exchange system as well as fuel system and engine supercharger. These changes are much greater during the dynamic states and their accompanying transitional processes. The different sensitivity of diagnostic parameters to the same force, coming from the engine structure, but realized in other loading conditions can be discussed. Presented in the paper is a model of the engine diagnostic, in which symptoms are indicators of diagnostic and emission characteristics of gaseous exhaust components. For the purpose of the paper the parameters were taken as the dominant structure in the change of fuel injection timing. The diagnostic engine model, based on the theory of multi-equation models, was supplemented by the results of the tests on the single-cylinder research engine ZS. Also proposed is a measure of the sensitivity of the diagnostic parameter during dynamic processes. The following paper is building on the problem previously published by the authors in [X].
    Źródło:
    Journal of Polish CIMEEAC; 2015, 10, 1; 161--170
    1231-3998
    Pojawia się w:
    Journal of Polish CIMEEAC
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimalization of sorbent feeding in the dry method of flue gas desulfarization
    Autorzy:
    Kwiatkowski, P.
    Zadrąg, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/2073590.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    sulfur oxides
    exhaust gas toxicity
    exhaust gas desulfurization
    dry method
    FGD
    tlenki siarki
    toksyczność spalin
    odsiarczanie spalin
    suche metody odsiarczania spalin
    Opis:
    The swiftly developing sea transport contributes to a considerable increase of fuel usage in the international shipping, which results in the escalation of toxic compounds emitted into the atmosphere. It is followed by the constantly heightened requirements limiting those emissions. In the case of sulfur oxide emission, inside of SECA (Sulfur Emission Control Area), the maximum content of sulfur in the shipping fuels used on the territorial seas was reduced to 0.1% per mass unit, but at the same time the legislator allows the ability to use a desulfurization installation working in a closed configuration. One of the desulfurization methods fulfilling those requirements is the dry method of desulfurization. In this paper are presented the results of research conducted on this very topic in the Department of Marine and Land Power Plants. The focus is the presentation of formulated characteristics of adsorbent feeding by an injection system dedicated to the dry method.
    Źródło:
    Journal of Polish CIMEEAC; 2017, 12, 1; 51--58
    1231-3998
    Pojawia się w:
    Journal of Polish CIMEEAC
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ranking of toxic compound concentrations as diagnostic parameetrs of marine internal combustion engine
    Autorzy:
    Zadrąg, R.
    Kniaziewicz, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/259107.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    diagnostic model
    Diesel engine
    exhaust components
    ranking of parameters
    Opis:
    Changing selected engine structure parameters, especially fuel system parameters, affects the emission of harmful compounds in the exhaust gas. Changes in harmful compound emission are frequently ambiguous, as they highly depend on parameters controlling the combustion process. An additional problem is that simple interactions are frequently accompanied with mutual influence of these parameters. Therefore, we can say about different sensitivity of diagnostic parameters to the same excitations coming from the engine structure but executed at different loading states. When the set of diagnostic parameters is numerous and the values of these parameters are similar, there is a real problem with their correct classification, frequently based on subjective assessment by the analyst. In the article, the authors propose a methodology to classify the recorded diagnostic parameters. In earlier works by the authors [4,6,7], the information capacity index method (the Hellwig method) was proposed as the measure of diagnostic parameter sensitivity. Based on this method, a rankling of diagnostic parameters can be created which divides the set of diagnostic variables into stimulators and destimulators. Novel authors’ approach to the presented problem consists in including nominants, i.e. variables with the most favourable value for the analysed aspect of the research, in the set of diagnostic variables. This normalisation of the set is believed to be helpful for making a diagnostic decision free from analyst’s arbitrariness. The zero unitarization method can also be helpful in creating diagnostic tests.
    Źródło:
    Polish Maritime Research; 2018, S 1; 234-242
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Problems of modelling toxic compounds emitted by a marine internal combustion engine in unsteady states
    Autorzy:
    Rudnicki, J.
    Zadrąg, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/259322.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    technical diagnostics
    diesel engine
    dynamic processes
    neural network
    Opis:
    Contemporary engine tests are performed based on the theory of experiment. The available versions of programmes used for analysing experimental data make frequent use of the multiple regression model, which enables examining effects and interactions between input model parameters and a single output variable. The use of multi-equation models provides more freedom in analysing the measured results, as those models enable simultaneous analysis of effects and interactions between many output variables. They can also be used as a tool in preparing experimental material for other advanced diagnostic tools, such as the models making use of neural networks which, when properly prepared, enable also analysing measurement results recorded during dynamic processes. The article presents advantages of the use of the abovementioned analytical tools and a sample application of the neural model developed based on the results of examination carried out on the engine research rig.
    Źródło:
    Polish Maritime Research; 2014, 4; 57-65
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of oxygenated diesel-n-butanol fuel blends on combustion, performance, and exhaust emissions of a turbocharged crdi diesel engine
    Autorzy:
    Labeckas, G.
    Slavinskas, S.
    Rudnicki, J.
    Zadrąg, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/259929.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    diesel engine
    diesel-n-butanol blends
    combustion phenomenon
    performance efficiency
    smoke
    pollutant emissions
    Opis:
    The article deals with the effects made by using various n-butanol-diesel fuel blends on the combustion history, engine performance and exhaust emissions of a turbocharged four-stroke, four-cylinder, CRDI 1154HP (85 kW) diesel engine. At first, load characteristics were taken when running an engine with normal diesel fuel (DF) to have ‘baseline’ parameters at the two ranges of speed of 1800 and 2500 rpm. Four a fossil diesel (class 1) and normal butanol (n-butanol) fuel blends possessing 1 wt%, 2 wt%, 3 wt%, and 4 wt% (by mass) of n-butanol-bound oxygen fractions were prepared by pouring 4.65 wt% (BD1), 9.30 wt% (BD2), 13.95 wt% (BD3), and 18.65 wt% (BD4) n-butanol to diesel fuel. Then, load characteristics were taken when an engine with n-butanol-oxygenated fuel blends at the same speeds. Analysis of the changes occurred in the autoignition delay, combustion history, the cycle-to-cycle variation, engine efficiency, smoke, and exhaust emissions NOx, CO, THC obtained with purposely designed fuel blends was performed on comparative bases with the corresponding values measured with ‘baseline’ diesel fuel to reveal the potential developing trends.
    Źródło:
    Polish Maritime Research; 2018, 1; 108-120
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies