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Hydrodynamic Lubrication Applied to Bearings with Oscillating Motion in Internal Combustion Engines
Technical Paper
2005-01-4004
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This work has for purpose to develop a mathematical model for the hydrodynamic lubrication of bearings with oscillating motion. The motivation lies in the tribology of internal combustion engines, specifically the lubrication problem at the bearing existing between the connecting rod and the piston pin. This kind of bearing does not perform a complete rotation, thus characterizing a new class of oscillating motion bearings. For the analysis of lubrication, a viscous fluid flow with negligible inertia inside a narrow gap formed by two surfaces is considered. The surfaces can be considered flat and are inclined to each other. The inner surface is fixed whereas the outer one performs an oscillating motion which generates a combined Couette-Poiseuille flow inside the gap. Using the same assumptions as in classical Reynolds' lubrication equation, the simplified mass and momentum conservation equations are analytically solved to determine the velocity and pressure distributions. It is shown that at the limit when the oscillation frequency tends to zero, these distributions give Reynolds' results back. The forces on the inner surface are obtained and shown in graphical form.
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Citation
Neto, I., Cavalca, K., and Bannwart, A., "Hydrodynamic Lubrication Applied to Bearings with Oscillating Motion in Internal Combustion Engines," SAE Technical Paper 2005-01-4004, 2005, https://doi.org/10.4271/2005-01-4004.Also In
References
- Cataruzzi, E. F. 1998 “Modelagem de Mancais Hidrodinâmicos Multilobulares” Unicamp Campinas, Brazil
- Cunha, C. 2003 “Métodos Numéricos - 2 a ed.” Editora Unicamp Campinas, Brasil
- Gander, W. Gautschi, W. 2000 “Adaptive Quadrature - Revisited” BIT 40 1 084 101
- Gresham, R.M. 2004 “What's Tribology” Tribology and Lubrication Technology 60 11 26 28
- Hamrock, B.J. Schmid, S.R. Jacobson, B.O. 2004 “Fundamentals of Fluid Film Lubrication - 2nd ed” Marcel Dekker, Inc. New York
- Helmetag, K. 2004 “Lubrication Formulation: Developing a Simple Model” Tribology and Lubrication Technology 60 1 20 24
- Heywood, J. B. 1988 “Internal Combustion Engine Fundamentals” McGraw-Hill. Inc.
- Krämer, E. 1993 “Dynamics of Rotors and Foundations” Springer-Verlag Berlin Heidelberg, Germany
- Norton, R. L. 1996 “Machine Design” Prentice Hall Inc.
- Shampine, L. F. Reichelt M. W. 1997 “The Matlab ODE Suite” Society for Industrial and Applied Mathematics 18 1 1 22
- Stoterau, R. L. 2004 “Tribologia” Universidade Federal de Santa Catarina, Centro Tecnológico, Departamento de Engenharia Mecânica
- Trindade, M.A Sampaio, R. 2001 “On the Numerical Integration of Rigid Body Nonlinear Dynamics in Presence of Parameters Singularities” Journal of the Brazilian Society of Mechanical Sciences 23 1
- White, F. M. 1974 “Viscous Fluid Flow - 2nd ed” McGraw-Hill. Inc.