Effect of asymmetric elliptical shapes of the sealing ring sliding surface on the main parameters of the oil film

• Autorzy: Wróblewski P.

Identyfikatory

DOI

10.19206/CE-2017-114

• Języki publikacji: EN

Abstrakty

EN

This article discusses the results of simulation studies of the effect of selected sealing ring sets with asymmetrical elliptical sliding surfaces on the oil layer thickness distribution over the whole operating range of an internal combustion engine. The problem of calculating the sliding surface coverage with visco-elastic oil film as well as in mixed friction conditions is discussed. The effect of asymmetrical elliptical sliding surfaces particularly on the dimensionless slip and squeeze indicators was determined, defining these surfaces ability to produce an oil film. The research results presented in this article show that there exists a real possibility of friction loss reduction in the cylinder and sealing rings contact area, while maintaining the oil film continuity between the sliding surfaces.

Słowa kluczowe

EN

rings with asymmetrical sliding surface shape; friction loss; oil film; quantification of lubricant oil consumption

PL

straty tarcia; film olejowy; zużycie oleju smarowego

• Wydawca: Polskie Towarzystwo Naukowe Silników Spalinowych
• Czasopismo: Combustion Engines
• Rocznik: 2017
• Tom: R. 56, nr 1
• Strony: 84--93
• Opis fizyczny: Bibliogr. 16 poz., wykr.

Twórcy

autor

Wróblewski P.

• Faculty of Machines and Transport at Poznan University of Technology

Bibliografia

• [1] AKALIN, O., NEWAZ, G.M. Piston ring-cylinder bore friction modelling in mixed lubrication regime: Part I – Analytical results. J Tribol 2001, 123(1), 211-218.
• [2] ISKRA, A. Rozkład filmu olejowego na gładzi cylindrowej silnika spalinowego, Rozprawy nr 181, Politechnika Poznańska 1987.
• [3] ISKRA, A. Efekty sprężystości olejów syntetycznych a straty tarcia w silniku spalinowym, Journal of KONES’97, Warszawa–Nałęczów 1997.
• [4] JAKUBIAK, L., GEMBARA, J. Ocena sprężystych własności olejów smarnych i ich wpływ na parametry współpracy tłoka z cylindrem w silniku spalinowym. KONSSPAL. Wrocław 2000.
• [5] SERDECKI, W. Analysis of ring pressure distribution on a deformed cylinder face. Journal of POLISH CIMAC. Energetic aspects, 2012, 7(1), Gdańsk.
• [6] STYLES, G., RAHMANI, R., RAHNEJAT, H. et al. Incycle and life-time friction transcience in piston ring-liner conjunction under mixed regime of lubrication. Int J Engine Res. 2014, 15(7), 862-876.
• [7] TAULOR, R.I. Squeeze film lubrication in piston rings and reciprocating contacts, Institution of Mechanical Engineers, Journal of Engineering Tribology, 2015, UK.
• [8] TIAN, T., WONG, V.W., HEYWOOD, J.B. A piston ringpack film thickness and friction model for multigrade oils and rough surfaces. SAE. 1996, 962032.
• [9] TIAN, T. Dynamic behaviors of piston rings and their practical impact – part ii: oil transport, friction, and wear of ring/liner interface and the effects of piston and ring dynamics. Proc. Inst. Mech. Eng., Part J: Journal of Engineering Tribology. 2002, 216.
• [10] WOLFF, A. Numerical analysis of piston ring pack operation of a marine two-stroke engine. Combustion Engines. 2011, 3.
• [11] WOLFF, A., PIECHNA, J. Numerical simulation of piston ring pack operation in the case of mixed lubrication. The Archive of Mech. Engineering, 2005, LII(33).
• [12] MAKSAK, W.I. Microsliding and Contact Stiffness of Metallic Bodies, Nauka, Moskau 1975.
• [13] FREDRIKSSON, B. Experimental determination frictional properties in araldite b contacts, Rep. LiTH-IKP-R-061, Linköping Institute of Technology, 1975.
• [14] ETSION, I. Revisiting the Catteano-Mindlin concept of interfacial slip in tangentially loaded compliant bodies, Trans. ASME, Journal of Tribology. 2010, 132, 020801-1-020801-9, 2010.
• [15] LIOU, J.L., LIN, J.F. A modified fractal microcontact model developed for asperity heights with variable morphology parameters. Wear. 2010, 268, 133-144.
• [16] WRÓBLEWSKI, P., ISKRA, A. Geometry of shape of profiles of the sliding surface of ring seals in the aspect of friction losses and oil film parameters. Combustion Engines. 2016, 167(4), 24-38.