Research of flame propagation in combustion system with semi-open combustion chamber for gasoline SI engines

• Autorzy: Leżański T. , Sęczyk J. , Wolański P.
• Języki publikacji: EN

Abstrakty

EN

Some results of visualization researches of combustion system with divided, semi - open combustion chamber for SI engines, using rapid compression machine (RPM) and experimental visualization engine (EVE) are presented in his paper. Short description of combustion system operation, description of test stands and research equipment can be found in the paper. The tests were performed at stoichiometric ratio natural gas-air and propane-air mixtures. A few the most characteristic of results are shown; to explain how should be operate the combustion system, to yield the better performance. They are compared the research results (photographs of combustion sequence, diagrams of in-cylinder pressure histories) during visualization testing with using RCM and EVE. During RCM testing we obtained the combustion photographs in the plain pass in cylinder axis but during ECE testing at the plain perpendicular to the cylinder axis. All researches shown that the best performance are yielded when a spark advance angle (ignition timing) is such selected that stream outflow prechamber to main combustion chamber starts when the piston is at TDC and it has adequate energy to travel a main combustion chamber with higher velocity than burning velocity in quiescent chamber. Then the shortest time of combustion, the highest peak pressure in the cycle and bigger useful working are yielded. The impact of spark advance angle on flame propagation process into combustion chamber in extreme cases has been analyzed too.

Słowa kluczowe

EN

SI engines; engine combustion systems; combustion process visualization

• 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: 2011
• Tom: Vol. 18, No. 2
• Strony: 251--260
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Leżański T.

autor

Sęczyk J.

autor

Wolański P.

• Institute of Heat Engineering, Warsaw University of Technology Nowowejska Street 21/25 Warszawa, Poland tel.:[phone],

Bibliografia

• [1] Leżański, T., Sęczyk, J., Wolański, P., Effects of Application of New Combustion System in a Commercial Spark Ignition Engine (in Polish), Combustion Engines – Silniki Spalinowe, No. 3, (146), Radom 2011.
• [2] Leżański, T., Sęczyk, J., Wolański, P., Some Problems of Combustion System Operation with Semi-Open Combustion Chamber for Spark Ignition Engine, Journal of KONES Powertrain and Transport, Vol. 17, No. 4, pp. 287-294, 2010.
• [3] Leżański, T., Sęczyk, J., Wolański, P., Influence of Ignition Advance Angle on Combustion in Internal Combustion Spark Ignition Engines with Semi-Open Combustion Chamber, Combustion Engines – Silniki Spalinowe, pp. 365-370, Opole 2009.
• [4] Leżański, T., Sęczyk, J., Wolański, P., Research of Influence of Design Parameters on combustion System Operation for Engines (in Polish), Journal of KONES Powertrain and Transport, Vol. 16, No. 4, pp. 265-276, 2009.
• [5] Leżański, T., Sęczyk, J., Wolański, P., Using of High-Speed Photography to Research of Ignition Process in SI Engines with Semi-Open Combustion Chamber (in Polish), Journal of KONES Powertrain and Transport, Vol. 16, No. 4, pp. 277-286, 2009.
• [6] Leżański, T., Wolański, P., Investigation of New Combustion System with Prechamber for Spark Ignition, 347-354.