This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Theoretical and Experimental Investigations of Oil Films for Application to Piston Ring Lubrication
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 01, 1992 by SAE International in United States
Annotation ability available
A theoretical model was developed to better understand the lubrication of piston rings. Models like this are important for studying oil consumption and its contribution to emission. The model suggests that temperature gradients and viscous heating in the oil film can be neglected if it is assumed the oil is the same temperature as the cylinder wall. A simple model suggests that vibrations will not affect the calculated film thickness significantly.
Oil film thickness was measured in a Cameron Plint wear test rig and in a diesel engine. Evidence of oil starvation was observed in both tests. Measured and predicted film thickness correlated well on the wear test rig. Engine tests showed some unexpected trends, however the theory predicts oil film thicknesses of the same order of magnitude as the measured results.
Measured results showed that separation occurs at the rear boundary of the ring. For modelling, the Reynolds boundary condition has the best correlation with experimental data.
|Technical Paper||Effect of Cylinder Lubrication on Piston Slap|
|Technical Paper||An Analysis of Swirling Flow in Cylinder for Predicting D.I. Diesel Engine Performance|
|Technical Paper||Induction Swirl Ratio in D.I. Diesel Engine|
CitationRichardson, D. and Borman, G., "Theoretical and Experimental Investigations of Oil Films for Application to Piston Ring Lubrication," SAE Technical Paper 922341, 1992, https://doi.org/10.4271/922341.
- Rangert, B. “Hydrodynamic Piston Ring Lubrication With Reference to Lubricating Oil Consumption,” 1974
- Dowson, D. et al. “Piston Ring Lubrication, Part II. Theoretical Analysis of a Single Ring and Complete Ring Pack,” “ Energy Conservation Through Fluid Film Lubrication Technology : Frontiers in Research and Design ,” ASME Publication New York 1979
- Moore, S.L. Hamilton, G.M. “The Partially Lubricated Piston Ring,” Journal Mech. Engr. Sci. 19 2 81 89 1977
- Keribar, R. Dursunkaya, Z. Flemming, M.F. “An Integrated Model of Ring Pack Performance,” Journal of Engineering for Gas Turbines and Power Transactions of the ASME 113 382 389 1991
- Ting, L.L. “Lubricated Piston Rings and Cylinder Bore Wear,” Wear Control Handbook ASME 609 667 1980
- Yonezawa, T. Kanda, H. “Analysis of Cavitation Erosion on Cylinder Liner and Cylinder Block,” SAE Paper 850401 1985
- Furuhama, S. Sasaki, S. Kojima, M. “Piston Friction Force and Piston Ring Oil Film Thickness,” SAE paper 8405067 1984
- Furuhama, S. Asahi, C. Hiruma, M. “Measurement of Piston Ring Oil Film Thickness in an Operating Engine,” ASLE 1982
- Richardson, D.E. Borman, G.L. “Using Fiber Optics and Laser Fluorescence for Measuring Thin Oil Films with Application to Engines,” SAE Paper 912388
- Richardson, D.E. “The Development and Implementation of Theoretical and Experimental Methods for Studying Oil Films in Engine Cylinder,” Department of Mechanical Engineering, University of Wisconsin - Madison 1990
- Johnson, M.W. Mangkoesoebroto, S.P. “Thin Film Theory for the Power Law Fluid With Application to Piston Ring Lubrication,” 1992 SAE Fuels and Lubes Meeting 1992
- Jeng Y.R. “Theoretical Analysis of Piston Ring Lubrication, Part II - Starved Lubrication and Its Application to a Complete Ring Pack,” STLE Tribology Transactions Montreal May 1991
- Allen, D.G. Dudley, B.R. Middleton, B. Parker, D.A. “Prediction of Piston Ring-Cylinder Bore Oil Film Thickness in Two Particular Engines and Correlation with Experimental Evidence” Piston Ring Scuffing, Mechanical Engineering Publications 107 124 1976
- Wada, S. et al. J. JLSE 16 1 50 1971
- Moore, S.L. Hamilton, G.M. “Negative Pressures Under a Lubricated Piston Ring,” Journal Mech. Engr. Sci. 20 1 49 57 1978
- Wakuri, Y. et al. “Oil-film Behavior of Reciprocating Slider with Circular Profile. (Optical Measurement of Oil-film Separation Boundary),” Bull. JSME 24 194 1462 1469 1981
- Kuo, T el al. “Calculation of Flow in the Piston-Cylinder-Ring Crevices of a Homogeneous-Charge Engine and Comparison with Experiment,” SAE Paper 890838 1989
- LeFeuvre, T. “Instantaneous Metal Temperatures and Heat Fluxes in a Diesel Engine,” Department of Mechanical Engineering, University of Wisconsin-Madison 1968
- Furuhama, S. Suzuki, H. “Temperature Distribution of Piston Rings and Piston in High Speed Diesel Engine,” Bull. JSME Paper No. 174-12 22 174 1788 1795 Dec. 1979
- Chen, S.K. Flynn, P.F. “Development of a Single Cylinder Compression Ignition Research Engine,” SAE Paper 650733 1965
- Phen, R. Borman, G. “Measurements of Cylinder Liner Oil Film Thickness in a Motored Diesel Engine,” 1993 SAE Congress 1993