Wyniki wyszukiwania - BazTech

1

Evaluation of the impact of the thermal state of a diesel engine on its efficiency

Zacharewicz Marcin, Zadrąg Ryszard, Bogdanowicz Artur, Socik Paweł, Wirkowski Paweł, Hołownia Jakub

Combustion Engines

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2024

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R. 63, nr 1

30--36

EN

The paper presents the results of model and empirical research on the influence of the thermal state of a diesel engine (oil temperature) on its indicated (thermal) efficiency. The paper contains a test plan, including a description of the test object, test equipment, and measurement points on a real object. In the following part, the results of tests carried out on a real object (laboratory single-cylinder engine) and the results of model tests obtained on the original engine model are presented. The results are presented both in tabular and graphical form. The obtained test results allowed to determine the relative value of the influence of the engine's thermal state on its efficiency for various operating conditions (load and rotational speed).

2

Evaluation of the impact of supplying a marine diesel engine with a mixture of diesel oil and n-butanol on its efficiency and emission of toxic compounds

Zacharewicz Marcin, Socik Paweł, Wirkowski Paweł, Zadrąg Ryszard, Bogdanowicz Artur

Combustion Engines

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2023

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R. 62, nr 4

40--47

EN

The article presents the results of research on the impact of feeding marine reciprocating internal combustion engines with blends of diesel fuel and n-butanol on their performance parameters. The study includes a research plan and empirical results, in which the engine efficiency and emissions of harmful compounds in the exhaust gases were determined. A promising aspect is also the decrease in the concentration of NOx, which has a positive impact on reducing the toxicity of exhaust gases. An important aspect of the passive defence of a vessel is the reduction of exhaust gas temperature under nominal loads.

3

Assessment of turbine engines exhaust emissions from vessels propulsion systems

Wirkowski Paweł

Diagnostyka

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2019

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Vol. 20, No. 2

97--103

EN

The issue taken in the article concerns vessels using gas turbine engines as part of propulsion systems and is an addition to previously conducted research in the field of vessels impact on the environment. The author's purpose was to determine the impact on the natural environment of the frigate's operation, in the aspect of ecological indicators. As part of research, measurements of harmful compounds concentration in the engine exhaust during frigate's cruise with simultaneous registration of engine operation parameters were carried out. The obtained results from the conducted measurements were the subject of a comparative analysis with the engine load values. The comparison of the obtained data made it possible to assign concentration values of particular harmful exhaust compounds to the appropriate engine load conditions during the cruise. On the basis of the analyzes carried out, emission factors for harmful exhaust emissions were determined. These factors allow determining the mass of harmful compounds emitted to the atmosphere from marine gas turbine engines during the operation of the Oliver Hazard Perry frigate.

PL

Zagadnienie podjęte w artykule dotyczy oceny wpływu jednostek pływających wykorzystujących w układach napędowych turbinowe silniki spalinowe na środowisko. Celem jest określenie oddziaływania na środowisko naturalne człowieka eksploatacji okrętu klasy fregata, w aspekcie wskaźników ekologicznych. W ramach badań przeprowadzono pomiary stężenia związków szkodliwych zawartych w spalinach silników podczas rejsu okrętu z jednoczesną rejestracją parametrów pracy silników. Uzyskane wyniki z przeprowadzonych pomiarów poddano analizie porównawczej z wartościami obciążenia silników. Wspólne zestawienie uzyskanych danych umożliwiło przypisanie wartości stężenia poszczególnych związków szkodliwych spalin odpowiednim stanom obciążenia silnika w trakcie rejsu. Na podstawie przeprowadzonych analiz wyznaczono wskaźniki emisji związków szkodliwych spalin. Wskaźniki te umożliwiają wyznaczenie masy emitowanych do atmosfery związków szkodliwych zawartych w spalinach okrętowych silników turbinowych podczas eksploatacji okrętu typu Oliver Hazard Perry.

4

The influence of operating conditions of the marine gas turbine engine on the level of emission of pollutants contained in the exhaust

Wirkowski Paweł, Markowski Jarosław

Combustion Engines

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2019

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R. 58, nr 3

218--223

EN

Pollution emission tests from turbine engines used for the main propulsion of vessels require measurement of the concentration of harmful compounds in the exhaust and assessment of the exhaust gases mass generated by the engine. The concentration of harmful compounds can be determined in a direct way by measuring it in the stream of exhaust gases. However, due to the large output of exhaust gases, the mass of exhaust gases must be determined indirectly. To do this it is necessary to carry out a series of tests and analyzes that will enable parameterization of operating conditions. The obtained parameters and functional relations between them can be used to assess the mass of generated exhaust gases. The article presents analyzes related to the methodology for assessing the mass of exhaust gases generated by the main propulsion turbine engine of the vessel, and the manner of their use in the assessment of emission of harmful exhaust gases.