Internal combustion micro-chambers and micro-engines

• Autorzy: Kraszewska H. , Rusin M.
• Języki publikacji: EN

Abstrakty

EN

Technological progress caused miniaturization of internal-combustion engines. They found application in many areas. The acquaintance of the ignition and combustion processes in the small volumes, the solution of the problem of piston movement under the influence of a pulse combustion in chambers, the choice of materials and problems related with the mixtures and exhaust creation, all these issues require a exact acquaintance for the purpose of optimization of the micro engine performance. In the paper, some issues are talked over on the base of investigations performed on the small volume chambers in single compression machines and in the shaftless two-cycle engine. Researched was the influence of the micro chamber size and of the area/volume ratio value on the processes of combustion occurring in the very small volumes and with the large values of area/volume ratio. Together with raise of the area/volume ratio, the value of the combustion pressure impulse becomes lower. The influence of the chamber material type on the combustion processes was defined, both in the single compression machine as in the micro engine. The existence of micro chamber size influence on the combustion limits of the fuel/air mixtures was designated. It has been determined that the range of the combustion limit is decreased with diminishing of the combustion chamber diameter, at the same time these changes are not the function of the area/volume ratio value changes. The maximum values of the combustion pressure appeared when chamber was supplied with stoichiometric mixture, irrespective of the chamber dimensions.

Słowa kluczowe

EN

internal combustion engine; microengine; shaft less engine; combustion chamber

• 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: 2008
• Tom: Vol. 15, No. 4
• Strony: 283--288
• Opis fizyczny: Bibliogr. 11 poz., rys.

Twórcy

autor

Kraszewska H.

autor

Rusin M.

• Institute of Aeronautics Al. Krakowska 110/114, 02 - 265 Warszawa, Poland tel. [phone], fax. [phone],

Bibliografia

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• [5] Kirtas M., Disseau M., Scarborough D., Jagoda J. and Menon S., Combustion Dynamics in a High-Aspect Ratio Engine, 29th International Symposium on Combustion, July 2002.
• [6] Aichlmayr H. T., Kittelson D. B. and Zachariah M. R., Engineering Science, 57: 4161-4171, 2002.
• [7] Jarosinski, J. and Podfilipski, J., Influence of Catalysis on Combustion in Spark Ignition Engine, SAE Technical Paper Series, 2001-01-1338, 2001.
• [8] Kirtas, M., Menon, S., Large-Eddy Simulations of Flow-Combustion Dynamics in a High-Aspect-Ratio Micro-Engine, SIAM 9th International Conference on Numerical Combustion, Sorrento, Italy, April 8-10, 2002.
• [9] http://www.darpa.mil/tto/MAW/mav_auvsi.html.
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