CI engine as a case study of thermomechanical FE analysis of the piston - piston rings - cylinder system

• Autorzy: Szurgott P. , Niezgoda T.
• Języki publikacji: EN

Abstrakty

EN

The compression-ignition engine as a case study of a methodology of the numerical modelling and simulation of the piston - piston rings - cylinder system was presented in the paper. Thermomechanical FE analysis, taking into account thermal and mechanical loads, was carried out using the MSC.Marc/Mentat software. The mechanical loads included loads due to inertial and gas forces as well. A three dimensional solid geometrical model of the considered set was developed using AutoCAD software, whereas the finite element mesh was generated using Altair HyperMesh. Kinematic boundary conditions - the vertical displacement and acceleration of the piston - were described by the corresponding curves as a function of time for selected engine speed. Changes in pressure on the piston crown were estimated based on data from the engine manufacturer and the corresponded indicator diagram available in the literature. The results of thermomechanical FE analysis were presented in the form of stress and/or displacement contours. The main aim of the analysis was to determine the deformation of the piston depending of on the piston material. Two types of material were compared - the actual one PA12 aluminum alloy and the new composite material with low hysteresis. The second material was characterized by slight differences of the coefficient of thermal expansion for heating and cooling.

Słowa kluczowe

EN

engine piston; composite piston; thermomechanical analysis; FE analysis

• 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: 2012
• Tom: Vol. 19, No. 1
• Strony: 399--406
• Opis fizyczny: Bibliogr. 13 poz., rys.

Twórcy

autor

Szurgott P.

autor

Niezgoda T.

• Military University of Technology Department of Mechanics and Applied Computer Science Gen. Sylwestra Kaliskiego Street 2, 00-908 Warsaw, Poland tel.: [phone], fax: [phone],

Bibliografia

• [1] Wajand, J. A., Wajand, J. T., Medium- and High-Speed Combustion Piston Engines [in Polish: Tłokowe silniki spalinowe średnio- i szybkoobrotowe], WNT, Warszawa 2005.
• [2] Bordes, C., Numerical Simulation of a Combustion Engine Piston with Surface Coating under Thermo-Mechanical Load, Master Thesis, Ecole Nationale Supérieure d’Ingénieurs des Etudes des Techniques d’Armements, 2004.
• [3] Budzik, G., Jaskólski, J., Thermal Loads of Pistons in Combustion Engines [in Polish: Obciążenia cieplne tłoków silników spalinowych], Rzeszow University of Technology Publishing House, Rzeszow 2004.
• [4] Szurgott, P., Niezgoda, T., Thermomechanical FE Analysis of the Engine Piston Made of Composite Material with Low Histeresis, Journal of KONES Powertrain and Transport, Vol. 18, No. 1, pp. 645–650, 2011.
• [5] http://www.pzl-wola.pl/index.php?page=silnikis, last retrieved on March 20, 2011.
• [6] A Method for Optimal Selection of Models in Complex Mechanical Systems of the Means of Transport [in Polish], Final Report, Project No. 5 T12C 039 24, Military University of Technology, Warsaw 2006.
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• [8] Johansson, S., Nilsson, P. H., Ohlsson, R., Rosén, B.-G., Experimental Friction Evaluation of Cylinder Liner/Piston Ring Contact, Wear, Vol. 271, Iss. 3–4, pp. 625–633, 2011.
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• [10] Kaźmierczak, A., Friction and Wear of the Piston – Piston Rings – Cylinder System [in Polish: Tarcie i zużycie zespołu tłok – pierścienie – cylinder], Wroclaw University of Technology Publishing House, Wroclaw 2005.
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• [12] Ashby, M. F., Jones, D. R. H., Engineering Materials 2, An Introduction to Microstructures, Processing and Design [in Polish: Materiały inżynierskie – Tom 2: kształtowanie struktury i właściwości, dobór materiałów], WNT, Warszawa 1996.
• [13] ASM Metals Handbook, ASM International, 2001.