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    Wyświetlanie 1-7 z 7
    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:
    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:
    Identification of indicators sensitivity of emissions as a diagnostic parameter during the dynamic process of marine diesel engine
    Identyfikacja wrażliwości wskaźników emisji jako parametrów diagnostycznych podczas procesów dynamicznych okrętowego silnika spalinowego
    Autorzy:
    Zadrąg, Ryszard
    Bogdanowicz, Artur
    Powiązania:
    https://bibliotekanauki.pl/articles/329416.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
    Tematy:
    marine diesel engine
    exhaust gas toxicity
    dynamic states
    emission
    okrętowy silnik spalinowy
    toksyczność spalin
    stany dynamiczne
    emisja
    Opis:
    The change of some parameters of an engine structure affects emission of harmful components in engine’s exhaust. This applies first of all to damages in a charge exchange system as well as in a fuel system and an engine supercharging system. These changes are significantly greater during dynamic states and in the time transient processes. It is possible to talk about different sensitivities of emission factors understood here as diagnostic parameters for the same extortion from the structure of the engine but executed in other load states. The article presents a diagnostic model of the engine in which the diagnostic symptoms are indicators and characteristics of the emission of gaseous exhaust components. The model was supplemented with the results of tests on the real object, which was a marine diesel engine. Propose measures of the sensitivity of the diagnostic parameter during dynamic processes - processes characterized by high variability of waveforms, which variability causes problems not only of measurement nature, but also often interpretive.
    Zmiana niektórych parametrów struktury silnika wpływa na zmianę emisji składników szkodliwych w spalinach. Dotyczy to przede wszystkim uszkodzeń następujących w układzie wymiany ładunku a także w układzie paliwowym i układzie doładowania silnika. Zmiany te są zdecydowanie większe podczas trwania stanów dynamicznych i towarzyszących im procesów przejściowych. Można więc mówić o różnej wrażliwości wskaźników emisji rozumianych tutaj jako parametrów diagnostycznych na te same wymuszenia pochodzące od struktury silnika, ale realizowane w innych stanach obciążenia. W referacie przedstawiono model diagnostyczny silnika, w którym symptomami diagnostycznymi są wskaźniki i charakterystyki emisji gazowych składników spalin. Model uzupełniono wynikami badań na obiekcie rzeczywistym, którym był okrętowy silnik spalinowy. Zaproponowano również miary wrażliwości parametru diagnostycznego podczas procesów dynamicznych - procesów charakteryzujących się dużą zmiennością przebiegów, która to zmienność powoduje problemy nie tylko natury pomiarowej, ale również często interpretacyjnej.
    Źródło:
    Diagnostyka; 2019, 20, 3; 79-86
    1641-6414
    2449-5220
    Pojawia się w:
    Diagnostyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Utilization of the zero unitarization method for the building of a ranking for diagnostic marine engine parameters
    Autorzy:
    Zadrąg, R.
    Kniaziewicz, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/133246.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    diagnostic
    theory of experiments
    marine diesel engine
    exhaust gas toxicity
    multi-equation models
    diagnostyka
    teoria eksperymentów
    silnik okrętowy
    toksyczność spalin
    modele wielorównaniowe
    Opis:
    Changing some of the parameters of the engine structure affects the emission of harmful components in the exhaust gases. This primarily concerns damage in the cargo exchange system as well as in the fuel system and engine boost system. Changes in emissions of harmful compounds are often ambiguous, depending largely on the parameters that shape the combustion process. An additional problem is that often simple but undesired interactions occur with the interaction of these parameters. It is therefore possible to speak of different diagnostic parameters' sensitivity to the same extractions from the engine structure, but implemented in other load states. In cases where the set of parameters is numerous and the values of these parameters are similar, there is a real problem with their proper classification, often based on the discretion of the researcher. In the paper the authors propose a methodology for classification of acquired diagnostic parameters. In previous papers [4, 5], Hellwig's method of information capacity index was proposed as a measure of diagnostic parameter sensitivity. This method can be used to build a diagnostic parameter ranking that divides the set of diagnostic variables into stimulators, destimulators and nominators. This normalization of the set seems to be helpful in making a diagnostic decision not influenced by the discretion of the researcher. The zero unitary method can also be helpful in creating diagnostic tests.
    Źródło:
    Combustion Engines; 2017, 56, 4; 44-50
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of the impact of damage to the injection system on the emission of toxic substances in a spark-ignition internal combustion engine
    Autorzy:
    Dziubiński, Mieczysław
    Siemionek, Ewa
    Drozd, Artur
    Żur, Paweł
    Ścirka, Michał
    Tatarynow, Dawid
    Powiązania:
    https://bibliotekanauki.pl/articles/133801.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    spark-ignition internal combustion engine
    exhaust gas toxicity
    exhaust gas standards
    injection system damage
    exhaust gas analyzer
    silnik spalinowy o zapłonie iskrowym
    toksyczność spalin
    normy emisji spalin
    uszkodzenie układu wtryskowego
    analizator spalin
    Opis:
    The article presented analyses the impact of damage to the injection system on the emission of toxic subsumes in a spark-ignition internal combustion engine. The work focuses on the basic elements of the injection system, which include injectors, throttle position sensor, coolant temperature sensor and lambda sensor. In addition, a catalytic reactor has been included in the context of its direct cooperation with the injection system under set conditions. The toxicity of exhaust gases of different spark-ignition engines fueled with petrol or gas in determined operating conditions using the MAHA MGT5 exhaust gas analyser was tested. The content of toxic substances in the exhaust gases was recorded for the correct settings of the injection system and for the engine working with damage to this system. The tests carried out will allow to assess the impact of the damage of the injection system on the toxicity of exhaust gases.
    Źródło:
    Combustion Engines; 2019, 58, 4; 112-118
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Selection of an algorithms controlling operation of supercharged compression ignition engine with additional fueling with CNG gas
    Autorzy:
    Stelmasiak, Z.
    Larisch, J.
    Pietras, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/134262.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    compressed natural gas
    dual fuel engine
    work parameters
    toxicity
    smoke
    engine controlling
    gaz ziemny sprężony
    silnik dwupaliwowy
    parametry użytkowe
    toksyczność
    zadymienie spalin
    sterowanie silnika
    Opis:
    The article presents an issues concerning selection of controlling algorithms for operation of supercharged compression ignition engine fueled additionally with CNG gas, including implemented control procedures, adjustment algorithms and operational algorithms. As the result, the engine which is run in dual fuel system operates under control of two controllers, factory ECU controller, governing fueling with the base fuel (Diesel oil) and all fueling parameters, and the second controller for gaseous fuel supply. Priority of operation of the controllers relates to fueling with Diesel oil, while the gas is treated as supplementary fuel. Due to possibility of usage of factorymade original ECU controller as used with Diesel oil supply; it has been presented proposal of its software in form of array algorithms.
    Źródło:
    Combustion Engines; 2017, 56, 3; 42-48
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Issues related to naturally aspirated and supercharged CI engines fueled with diesel oil and CNG gas
    Autorzy:
    Stelmasiak, Z.
    Larisch, J.
    Pietras, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/132886.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    compressed natural gas
    dual fuel engine
    work parameters
    toxicity
    smoke
    engine controlling
    silnik dwupaliwowy
    gaz ziemny sprężony
    sterowanie silnika
    zadymienie spalin
    parametry użytkowe
    toksyczność
    Opis:
    The study presents results of a research work on two various Diesel engines adapted for dual fuel feeding with CNG gas and diesel oil. The first engine is naturally aspirated, medium-sized engine, corresponding to engines mounted as power units in trucks and buses. Natural gas was used as the main fuel to this engine, and amount of diesel oil was reduced to minimum according to criterion of correct operation of injection system and reliable ignition of gaseous mixture. The second engine was a high-speed, supercharged engine of Fiat 1.3 MJT type, destined to powering of passenger cars. This engine is equipped with modern engine technologies, high-pressure injection system of Common Rail type with division of fuel dose and recirculation of exhaust gases, with catalytic converter and DPF filter. To fueling of this engine was used small additive of gas, aimed at reduction of smokiness of exhaust gases. Performed research has shown beneficial effect of gas on engine efficiency, reduction of concentration of nitrogen oxides, smokiness of exhaust gases and emission of particulate matter. Simultaneously, however, emissions of carbon monoxide and hydrocarbons had increased, especially in area of partial engine loads. Results of the study are pointing at possibility of installation of dual fuel system in traction engines with different size.
    Źródło:
    Combustion Engines; 2017, 56, 2; 24-31
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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