The theoretical study on influence of fuel injection pressure on combustion parameters of the marine 4-stroke engine

• Autorzy: Kowalski J.

Identyfikatory

DOI

10.5604/12314005.1213553

• Języki publikacji: EN

Abstrakty

EN

The manuscript presents the analysis of influence of fuel injection pressure on the combustion parameters of marine 4-stroke diesel engine. Analysis is based on computational fluid dynamic (CFD) model designed on the basis of the motion mesh of combustion chamber of the marine engine cylinder and air inlet and exhaust gas ducts. Presented model consists of models of fuel injection into combustion chamber, breaking-up and evaporation of the fuel, mixing with air and turbulent combustion with heat transfer to construction elements of the engine cylinder. Mentioned CFD model is validated according to boundary and initial conditions taken from direct measurements. The chosen research object is laboratory 4-stroke turbocharged Diesel engine with direct injection of the fuel and mechanically controlled of both cylinder valves and the injector. During the calculation the fuel dose, delivered into the engine cylinder was changed without any other changes in the initial and boundary conditions. This approach to the problem allows to the cause-effect analysis. The results of presented study are as follows: The increase of the fuel injection pressure causes the increase of fuel dose, delivered into the engine cylinder and the increase of intensity of both kinetic and diffusion stage of the combustion process. The result of this is the increase of pressure and temperature of the combustion and significant increase of the NOx fraction despite the decrease of the O2 content in the combustion chamber of the engine.

Słowa kluczowe

EN

marine engine; multidimensional model; combustion model; fuel injection pressure; CFD

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2016
• Tom: Vol. 23, No. 1
• Strony: 161--168
• Opis fizyczny: Bibliogr. 21 poz., rys.

Twórcy

autor

Kowalski J.

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

Bibliografia

• [1] Buyukkaya, E, Cerit, M. Experimental study of NOx emissions and injection timing of a low heat rejection diesel engine, Int J Therm Sci. 2008, 47(8):1096-1106.
• [2] Colin, O., Benkenida, A., The 3-Zones Extended Coherent Flame Model (ECFM3Z) for Computing Premixed/Diffusion Combustion, Oil & Gas Science and Technology – Rev., Vol. 59, No. 6, pp. 593-609, 2004.
• [3] Desantes, J, M, Benajes, J, Molina, S, González, C, A., The modification of the fuel injection rate in heavy-duty diesel engines, Appl Therm Eng., 24(17-18):2715-2726, 2004.
• [4] Desantes, J, M, Benajes, J, Molina, S, González, C, A., The modification of the fuel injection rate in heavy-duty diesel engines. Part 1: Effects on engine performance and emissions, Appl Therm Eng., 24(17-18): 2701-2714, 2004.
• [5] Desantes, J, M, Payri, R, Salvador, F, J, Gil, A., Development and validation of a theoretical model for diesel spray penetration, Fuel, 85 (7-8):910-917, 2006.
• [6] Dukowicz, J, K., Quasi-steady droplet change in the presence of convection, Informal report Los Alamos Scientific Laboratory, LA7997-MS, Los Alamos 1979.
• [7] Han, Z, Uludogan, A, Hampson, G, J, Reitz R, D., Mechanism of Soot and NOx Emission Reduction Using Multiple-injection in a Diesel Engine, 1996.
• [8] Jaworski, P., Kowalski, J., 3D mesh model for RANS numerical research on marine 4-stroke engine, Journal of Polish CIMAC, Vol. 9-1, pp. 87-94, 2014.
• [9] Kowalski, J., An experimental study of emission and combustion characteristics of marine diesel engine with fuel pump malfunctions, Applied Thermal Engineering, Vol. 65, pp. 469-476, 2014.
• [10] Kowalski, J., An experimental study of emission and combustion characteristics of marine diesel engine in case of cylinder valves leakage, Polish Maritime Research, Vol. 22, No. 3, pp. 90-98, 2015.
• [11] Kowalski, J., An experimental study of emission and combustion Characteristics of marine diesel engine with fuel Injector malfunctions, Polish Maritime Research, Vol. 23, No. 1, pp. 77-84, 2016.
• [12] Kowalski, J., Model procesu spalania w 4-suwowym silniku okrętowym, Mechanik, Vol. 10, pp. 49-58, 2015.
• [13] Kowalski, J., The analysis of influence of fuel spray angle on NOx fraction in the exhaust gas from marine 4-stroke diesel engine, Journal of KONES, Vol. 22, No. 3, pp. 309-316, 2015.
• [14] Kowalski, J., The analysis of influence of fuel spray angle on NOx fraction in the exhaust gas from marine 4-stroke diesel engine, Journal of KONES, Vol. 22, No. 3, pp. 309-316, 2015.
• [15] O’Rourke, P, J. Amsden, A, A., The Tab Method for Numerical Calculation of Spray Droplet Break-up, SAE Paper Technical 872089, SAE International 1987.
• [16] Özkan, M, Özkan, D, B, Özener, O, Yılmaz, H., Experimental study on energy and exergy analyses of a diesel engine performed with multiple injection strategies: Effect of pre-injection timing, Appl Therm Eng., 53(1):21-30, 2013.
• [17] Parlak, A, Yaşar, H, Haşimoglu, C, Kolip, A., The effects of injection timing on NOx emissions of a low heat rejection indirect diesel injection engine, Appl. Therm. Eng., 25 (17-18): 3042-3052, 2005.
• [18] Payri, F, Bermúdez, V, Payri, R, Salvador, F, J., The influence of cavitation on the internal flow and the spray characteristics in diesel injection nozzles, Fuel, 83 (4-5): 419-431, 2004.
• [19] Payri, R, Salvador, F, J, Gimeno, J, Zapata, L, D., Diesel nozzle geometry influence on spray liquid-phase fuel penetration in evaporative conditions, Fuel, 87 (7): 1165-1176, 2008.
• [20] Poinsot, T., Veynante, D., Theoretical and numerical combustion, Edwards 2005.
• [21] Zienkiewicz, O, C., Taylor, R, L., Finite Element Method, Vol. 3, Fluid Dynamics, Fifth Edition, Butterworth-Heinemann, Oxford 2000.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.