The analysis of the ECFM-3Z combustion model in the marine 4-stroke engine for the exhaust gas composition

• Autorzy: Kowalski J.
• Języki publikacji: EN

Abstrakty

EN

The paper presents ECFM-3Z combustion model analysis in the marine, 4-stroke diesel engine. The purpose of the modeling was to determine the composition of the exhaust gas. This composition depends on the composition of the combustible mixture, combustion time and thermodynamic conditions prevailing in the engine cylinder during the working process. Mentioned parameters are variable in time and space, and therefore require the use of 3-dimensional model based on the finite volume method, taking into account the fuel injection, brake-up and evaporation, mixing with air, auto-ignition and combustion. All models presented in the literature are adapted to the parameters of relatively small engines. Different marine engine parameters require significant modifications taking into account the heat exchange with the structural elements of the engine, leakage through piston rings and energy losses by riction. It should also be noted that dimensions of the marine engine require careful optimization of spatial moving meshes according to computation time and quality of results. Paper presents influence of mixing time, start of injection and autoignition delay on modeling results of the exhaust gas composition.

Słowa kluczowe

EN

marine engine; multidimensional model; mixing time; autoignition delay; ECFM-3Z; combustion model

PL

silniki morskie; model wielowymiarowy; czas mieszania; opóźnianie samozapłonu; ECFM-3Z; model spalania

• Wydawca: Faculty of Ocean Engineering and Ship Technology, Gdańsk University of Technology
• Czasopismo: Journal of Polish CIMAC
• Rocznik: 2014
• Tom: Vol. 9, no 1
• Strony: 95--102
• Opis fizyczny: Bibliogr. 16 poz., rys., wykr., tab.

Twórcy

autor

Kowalski J.

• Gdynia Maritime University Department of Engineering Sciences Morska Street 81-87, 81-225 Gdynia, Poland tel.: [phone], fax: [phone]

Bibliografia

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