The oil film parameters of the wankel engine apex seal in aspects of durability of mating elements

• Autorzy: Iskra A. , Babiak M. , Kałużny J. , Marszałkowski K.
• Języki publikacji: EN

Abstrakty

EN

The Wankel engine is one of only few alternatives to the reciprocating engines. The advantages such as good value of maximum engine power to its mass ratio are still present and can have great sense in selected fields of application, for example General Aviation. Nevertheless the disadvantages of the Wankel engine design have never lost its importance and still pose an obstacle to wider use of the Wankel engine. One of the main drawbacks is the rotor sealing system design, especially the apex seal where single siat has to fulfil a purpose of conventional engine piston rings pack. Moreover the unfavourable changes of the apex seal angle of attack causes that optimal shape of the apex seal sliding surface, in aspects of the oil film parameters, can not be achieved. These results in worsening of apex seal elements mating conditions, reducing its effectiveness and durability. In the paper authors present results of simulation researches where oil film parameters, for example oil film thickness, which determines apex seal durability, were obtained for different engine operating conditions and various shapes of apex seal sliding surface geometry. The results indicate possible directions during apex seal designing process which should provide oil film continuity in whole rotor angle position range and for wide engine operation conditions range.

Słowa kluczowe

EN

combustion engines; Wankel engine; apex seal; oil film parameters

• 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: 199--206
• Opis fizyczny: Bibliogr. 5 poz., rys.

Twórcy

autor

Iskra A.

autor

Babiak M.

autor

Kałużny J.

autor

Marszałkowski K.

• Poznań University of Technology, Institute of Combustion Engines and Transport Piotrowo Street 3, 60-965 Poznań, Poland tel: [phone],fax: [phone],

Bibliografia

• [1] Bernhard, M., Silniki spalinowe o tłokach obrotowych, WKiŁ, Warszawa 1964.
• [2] Froede, W., The NSU-Wankel Rotating Combustion Engine, SAE, Detroit 1961.
• [3] Iskra, A., Rozkład filmu olejowego na gładzi cylindrowej silnika tłokowego, Rozprawa habilitacyjna, Politechnika Poznanska, Poznań 1987.
• [4] Pinkus, O., Sternlicht, B., Theory of hydrodynamic lubrication, McGraw-Hill Book Company Inc., New York, Toronto, London 1961.
• [5] Serdecki, W., Wpływ pierścieni uszczelniajacych na kszta􀃡towanie filmu olejowego na cylindrowej silnika spalinowego, Rozprawa habilitacyjna, Politechnika Poznańska, Poznań 1990.