Research of combustion system with semi-open combustion chamber in a commercial spark ignition engine

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

Abstrakty

EN

During the research of a new combustion system with semi-open combustion chamber for SI engines with use of the rapid compression machine (RCM) and visualisation experimental engine (VEE) it was proved that the application of this system results in shortening of the combustion time, increasing of the maximum cycle pressure and, in effect, increase of the combustion efficiency. The aim of the research using a commercial spark ignition engine was to prove that the similar results (as in RCM and VEE) could be obtained in a wide range of automotive engine operating parameters. In this research the two cylinder, four-stroke air-cooled SI engine, with volume displacement 650 cm³ from Fiat 126 motorcar was used. This engine was fitted with a modified cylinder head and ignition distributor. Two types of prechamber with different shape were installed in different locations into the cylinder head but the ignition distributor had fixed, preadjusted, ignition advance angle in the full range of engine speed. The wide-open throttle characteristics including power, specific fuel consumption and exhaust emission versus engine speed and load characteristics including: specific fuel consumption and exhaust emission versus engine torque were determined for different ignition advance angles. In the lower range of the ignition advance angle the engine showed stable operation at lower speed but unstable at high speed and, inversely, if the ignition advance angle was high the engine operation was stable at the higher speed and unstable at the lower. The engine characteristics during unstable operation were deteriorating. The research results show that improvement of the engine characteristics can be obtained in the full range of operating parameters if the ignition advance angle is varied continuously with the variation of engine speed. The ignition advance angle for the engine fitted with the new combustion system, which was subject of this research, was different form the ignition advance angle for standard engine.

Słowa kluczowe

EN

SI engines; combustion; combustion chamber of piston engines; exhaust emission

• 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. 4
• Strony: 283--290
• Opis fizyczny: Bibliogr. 18 poz., rys.

Twórcy

autor

Leżański T.

• Warsaw University of Technology Institute of Heat Engineering Nowowiejska Street 21/25, 00-661 Warszawa tel.: [phone]

autor

Sęczyk J.

• Warsaw University of Technology Institute of Heat Engineering Nowowiejska Street 21/25, 00-661 Warszawa tel.: [phone]

autor

Wolański P.

• Warsaw University of Technology Institute of Heat Engineering Nowowiejska Street 21/25, 00-661 Warszawa tel.: [phone]

Bibliografia

• [1] Glinka, W, Leżański, T., Wolański, P., Zastosowanie fotografii szybkiej do badań spalania w silnikach SI z półotwartą komorą wstępną, Journal of KONES, Vol. 14, 2007.
• [2] Haller, P., Jankowski, A., Kolanek, C., Walkowiak, W., Microemulsions as fuel for diesel engine, Journal of KONES, Vol. 19, No. 3, pp. 165-170, 2012.
• [3] Heywood, J. B., Internal Combustion Engine Fundamentals, McGraw-Hill, New York 1988.
• [4] Jankowski, A., Chosen Problems of Combustion Processes of Advanced Combustion Engine, Journal of KONES, Vol. 20, No. 3, DOI: 10.5604/12314005.1136852, pp. 203-208, 2013.
• [5] Jankowski, A., Influence of chosen parameters of water fuel microemulsion on combustion processes, emission level of nitrogen oxides and fuel consumption of ci engine; Journal of KONES, Vol. 18, No. 4 2011.
• [6] Jankowski, A., Kowalski, M., Environmental Pollution Caused by a Direct Injection Engine, Journal of KONES, Vol. 22, No. 3, DOI: 10.5604/12314005.1168461, pp. 133-138, 2015.
• [7] Jankowski, A., Modelling of Combustion Processes of Liquid Fuels, Journal of KONES 2012, Powertrain and Transport, Vol. 19, No 4, pp. 239-244, Warsaw 2012.
• [8] Jankowski, A., Sandel, A., Jankowska-Siemińska, B. Sęczyk, J. Measurement of drop size distribution in fuel sprays by laser methods, Journal of KONES Vol. 8 No. 3-4, pp. 334-345, 2001.
• [9] Jankowski, A., Sandel, A., Seczyk, J., Jankowska-Sieminska, B., Some problems of improvement of fuel efficiency and emissions in internal combustion engines, Journal of KONES, Vol. 9, No. 3-4, pp. 333-356, 2002.
• [10] Jankowski, A., Study of the influence of different factors on combustion processes (Part one), Journal of KONES, Vol. 16, No. 1, pp. 209-216, 2009.
• [11] Jankowski, A., Study of the influence of different factors on combustion processes (Part two), Journal of KONES 2009, Vo. 16, No. 3 pp. 135-140, 2009.
• [12] Jankowski, A., Test Stand for Modelling of Combustion Processes of Liquid Fuels, Journal of KONES, Vol. 21, No. 2, DOI: 10.5604/12314005.1133885, pp. 121-126, 2015.
• [13] Jankowski, A., Test Stand for Modelling of Combustion Processes of Liquid Fuels, Journal of KONES, Vol. 21, No. 2, DOI: 10.5604/12314005.1133885, pp. 121-126, 2015.
• [14] Leżański, T., Badania silnika o zapłonie iskrowym wyposażonego w nowy system spalania z półotwartą komorą spalania, Sprawozdanie merytoryczne z realizacji projektu badawczego Nr 4T12D 029 30, Warszawa 2009.
• [15] Leżański, T., Rychter, T., Teodorczyk, A., Prechamber combustion system studies using rapid compression machine, Journal of KONES International Combustion Engines, Vol. 7, No. 1-2, Warsaw-Lublin 2000.
• [16] Zurek, J., Jankowski, A., Experimental and Numerical Modelling of Combustion Process of Liquid Fuels Under Laminar Conditions, Journal of KONES, Vol. 22, No. 3, DOI: 10.5604/12314005.1134559, pp. 309-316, 2015.
• [17] Zurek, J., Jankowski, A., Experimental and Numerical Modelling of Combustion Process of Liquid Fuels Under Laminar Conditions, Journal of KONES, Vol. 22, No. 3, DOI: 10.5604/12314005.1134559, pp. 309-316, 2015.
• [18] Zurek, J., Kowalski, M., Jankowski, A., Modelling of Combustion Process of Liquid Fuels under Turbulent Conditions, Journal of KONES, Vol. 22, No. 4, DOI: 10.5604/12314005.1168562, pp. 355-344, 2015.

Uwagi

PL

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