Modelling of process of injection and combustion in two - cycle engine

• Autorzy: Cygnar M.
• Języki publikacji: EN

Abstrakty

EN

Article presents simulated research and visualization of combustion process of four-cylinder test engine based on the spark ignition engine Toyota Yaris 1.300 cm3, equipped with two systems of power supply i.e. : fundamental and ignition. Two methods of initiating the combustion process were applied in the engine, that is : from spark ignition and after it has turned off - the combustion is initiated by means of the injection of the ignition dose. The conducted research was aimed at revealing the differences in the combustion process and the engine performance, especially the changes of pressure in the cylinder for that kind of dual-fuel power engine supply. The ignition dose injected to cylinder was equal to about 5% of the general mass of the fuel given to the engine. The mass of the fuel injected to the infold manifold determined the remaining part, and direct injection of fuel took place for several dozen rotation degrees of the crankshaft before TDC (Top Dead Centre). A spatial grid of the engine's model (preprocessor) was created as well as the modification of the source KIVA 3V program was executed, consisting of taking into account two systems of injection. It is necessary to mention, that KIVA 3V program contains only one source of fuel's injection as a default. On two-dimensional graphs, the courses of changes of pressure and temperature are presented as well as the change of the mass of the injected ignition dose. A simulation was conducted for chosen rotation angles of the crankshaft, for the purpose of a radical analysis of thermodynamic parameters along with an analysis of the toxic components of the exhaust fumes. The conclusions of the conducted simulated research confirm the reduction of fuel consumption with a simultaneous reduction of the emissions of toxic exhaust fumes components.

Słowa kluczowe

EN

two cycle engine; two fuel injection systems

• 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: 2012
• Tom: Vol. 19, No. 3
• Strony: 75--84
• Opis fizyczny: Bibliogr. 9 poz., rys.

Twórcy

autor

Cygnar M.

• State Higher Vocational School in Nowy Sącz Institute of Engineering Zamenhofa 1 Street, 30-300 Nowy S..cz, Poland tel.: [phone], fax: [phone],

Bibliografia

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• [2] Amdsen, A., KIVA-3: A KIVA Program with Block-Structured Mesh for Complex Geometries, LA-1 2503-MS, UC-361, National Laboratory, Los Alamos 1993.
• [3] Amdsen, A., et al., A Computer Program for Two- and Three-Dimensional Fluid Flows with Chemical Reactions and Fuel Sprays, National Laboratory, Los Alamos 1985.
• [4] Amsden, A., O’Rourke, P. J., Butler, T. D., KIVA-II, A Computer Program for Chemically Reactive Flows with Sprays, National Laboratory LA-11560-MS, Los Alamos 1989.
• [5] O’Rurke, P., Amsden, A., The TAB Method for Numerical Calculation of Spray Droplet Breakup, SAE Technical Paper No. 872089, 1987.
• [6] Spalding, D. B., Combustion and Mass Transfer, Pergamon Press, 1979.
• [7] Spalding, D. B., GENTRA User Guide, CHAM, London 1997.
• [8] Teodorczyk, A., Wysga, P., Symulacje komputerowe procesów spalania w silnikach tłokowych, II Krajowe Sympozjum Komputerowe systemy wspomagania prac inżynierskich w przemyśle i transporcie, Zakopane 1998.
• [9] The GENTRA User Guide, TR200,TR211 CHAM, London 1997.