Autor: Zadrąg, R. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

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

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Skocz do pozycji: 2.

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

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Skocz do pozycji: 3.

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

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Skocz do pozycji: 4.

Tytuł:: Identification of diagnostic parameter sensitivity during dynamic processes of a marine engine
Identyfikacja wrażliwości parametrów diagnostycznych podczas procesów dynamicznych okrętowego silnika spalinowego
Autorzy:: Zadrąg, R.
Kniaziewicz, T.
Powiązania:: https://bibliotekanauki.pl/articles/133430.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:: engine exhaust components
marine engines
engine diagnostics
składniki spalin silnika
silniki okrętowe
diagnostyka silników
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. Model is complemented with the tests on the single-cylinder research engine ZS. Also proposed is a measure of the sensitivity of the diagnostic parameter during dynamic processes.
Zmiana niektórych parametrów struktury silnika wpływa na zmianę emisji szkodliwych składników w spalinach. Dotyczy to przede wszystkim uszkodzeń występujących w układzie wymiany ładunku a także w układzie paliwowym i układzie doładowania silnika. Zmiany te mają zdecydowanie większe wartości podczas trwania stanów dynamicznych i towarzyszących im procesów przejściowych. Można więc mówić o różnej wrażliwości parametrów diagnostycznych na te same wymuszenia pochodzące od struktury silnika, ale realizowane w innych stanach obciążenia. W artykule przedstawiono model diagnostyczny silnika, w którym symptomami diagnostycznymi są wskaźniki i charakterystyki emisji gazowych składników spalin. Model uzupełniono wynikami badań na stanowisku jednocylindrowego silnika badawczego ZS. Zaproponowano również miary wrażliwości parametru diagnostycznego podczas procesów dynamicznych.
Źródło:: Combustion Engines; 2015, 54, 3; 1007-1014
2300-9896
2658-1442
Pojawia się w:: Combustion Engines
Dostawca treści:: Biblioteka Nauki

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