Some problems of combustion system operation with semi-open combustion chamber for spark ignition engine

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

Abstrakty

EN

The some problems concern of the new combustion system operation with semi open combustion chamber, which can be used in spark ignitions internal combustion engines are presented in this paper. These considerations are based on the visualization research results, with using rapid compression machine (RCM). In this researched combustion system the original combustion chamber was divided by partition in prechamber and main combustion chamber. This division of the original combustion chamber exists only when the piston is close to TDC, for the rest of the cycle the chambers arefully open. Ignition is initiated in the prechamber using electric spark plug, but the mixture in main combustion chamber is ignited by the stream of the burned gases injected from prechamber through the orifice in partition, if the ignition advance angle is correct. If the ignition advance angle is incorrect the mixture from prechamber will be outflowing through the orifice in partition and through the slot which is created between the partition and piston crowns. This last stream is swirled on the partition edge, what causes decrease of the stream speed outflowed from the orifice in partition to main combustion chamber. If the ignition advance angle is too big, then a peak pressure and compression work is very big because the burned gases are compressed instead of the fresh air/fuel mixture. This causes that the effective work is small and combustion efficiency is small.

Słowa kluczowe

EN

SI engine; rapid compression machine; combustion; combustion process visualization; ignition advance angle

• 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: 2010
• Tom: Vol. 17, No. 4
• Strony: 287--294
• Opis fizyczny: Bibliogr. 9 poz., rys.

Twórcy

autor

Leżański T.

autor

Sęczyk J.

autor

Wolański P.

• Institute of Heat Engineering, Warsaw University of Technology ul. Nowowiejska 21/25, 00-665 Warszawa, Poland tel.:[phone],

Bibliografia

• [1] Leżański, T., Badania silnika o zapłonie iskrowym wyposażonego w nowy system spalania z półotwartą komora spalani,. Sprawozdanie merytoryczne z realizacji projektu badawczego Nr 4T12D 029 30, Warszawa 2009.
• [2] 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. No PTNSS-2009-SC-169, 2009.
• [3] Leżański, T., Rychter, T., Teodorczyk, A., Prechamber Combustion System Studies Using Rapid Compression Machin,. Journal of KONES. International Combustion Engines. Vol.7, No 1-2, 2000.
• [4] Glinka. W., Leżański, T., Wolański, P., Zastosowanie fotografii szybkiej do badań spalania w silnikach SI z półotwartą komora wstepna, Journal of KONES. Internal Combustion Engines, Vol.14, No. 4, 2007.
• [5] Heywood, J. B., Internal Combustion Engine Main combustion chambers, McGraw-Hill, New York, 1988.
• [6] Rychter T., Teodorczyk A.: An Evaluation of Effectiveness of the Combustion Jet in Dual Chamber Configuration, Archivum Combustionis Vol.4, No.3 ,1984.
• [7] Kowalewicz A.: Systemy spalania szybkoobrotowych tłokowych silników spalinowych, WKŁ, Warszawa 1990.
• [8] Leżański, T., Sęczyk, J., Wolański, P., Research of Influence of Design Parameters on Combustion System Operation for SI Engines, Journal of KONES Internal Combustion Engines, Vol. 16, No 4, 2009.
• [9] Leżański, T., Sęczyk, J., Siwiec, S., Wolański, P., Using of High Speed Photography to Research of Ignition Process in SI Engines with Semi Open Combustion Chamber, Journal of KONES Internal Combustion Engines, Vol. 16, No 4, 2009.