This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
The Influence of Polymer Additives on Journal Bearing Performance
Annotation ability available
Sector:
Language:
English
Abstract
The temporary viscosity loss experienced by non-Newtonian lubricants, operating in a simulated engine bearing, has been determined. Included in the study were; lubricant blends containing 13 commonly-used viscosity index improvers and six commercial multigraded engine oils. Bearing friction and minimum oil-film thickness data were used to determine the temporary viscosity loss. For the 13 viscosity index improvers, this temporary loss ranged from 20-96% of the polymer contributed viscosity. Results indicate that low shear rate viscosity determinations, such as the currently used ASTM D445, should not be used to characterize the behavior of these lubricants in high-speed engine bearings.
Recommended Content
Technical Paper | A Study of Lubricating Oil Performance in a Journal Bearing Rig |
Technical Paper | Radioactive Tracer Measurements of Engine Bearing Wear |
Technical Paper | Assessment of Shear Stability Methods for European Engine Oils |
Authors
Citation
Rosenberg, R., "The Influence of Polymer Additives on Journal Bearing Performance," SAE Technical Paper 750692, 1975, https://doi.org/10.4271/750692.Also In
References
- Rosenberg R.C. “A Method for Determining the Influence of Multi-Graded Oils on Journal Bearing Performance.” SAE Transactions 82 1973 paper 740383
- Savage M.W. Bowman L.O. “Radioactive Tracer Measurements of Engine Bearing Wear.” SAE Transactions 65 1957 635 640
- Okrent E.H. “The Effect of Lubricant Viscosity and Composition on Engine Friction and Bearing Wear.” ASLE Transactions 4 1961 97 108
- Okrent E.H. “The Effect of Lubricant Viscosity and Composition on Engine Friction and Bearing Wear II.” ASLE Transactions 4 1961 257 262
- DuBois G.B. Ocvirk F.W. Wehe R.L. “Study of Effect of a Non-Newtonian Oil on Friction and Eccentricity Ratio of a Plain Journal Bearing.” NASA Technical Note, D-427 May 1960
- Tao F.F. Philippoff W. “Hyrdodynamic Behavior of Viscoelastic Liquids in a Simulated Journal Bearing.” ASLE Transactions 10 1967 302 315
- Wada S. Hayashi H. “Hydrodynamic Lubrication of Journal Bearings by Pseudo-Plastic Lubricants. (Part I-Theoretical Studies and Part II-Experimental Studies) “Bulletin of the Japan Soc. of Mech. Engr. 14 69 1971 268 286
- Horowitz H.H. Steidler E.E. “The Calculated Journal Bearing Performance of Polymer-Thickened Lubricants.” ASLE Transactions 3 1960 124 133
- Ng C.W. Saibel E. “Nonlinear Viscosity Effects in Slider Bearing Lubrication.” ASME Transactions, J. Basic Engineering 84 1962 192 196
- Hsu Y.C. Saibel E. “Slider Bearing Performance with a Non-Newtonian Lubricant.” ASLE Transactions 8 1965 191 194
- Tipei N. Rohde S.M. “Lubricant Fluid Films with Directional Variable Viscosity.” ASME Transactions Journal of Lubrication Technology 96 2 1973 267 274
- Cameron A. “The Principles of Lubrication.” New York John Wiley and Sons, Inc. 1966
- Hays D.F. “A Variational Approach to Lubrication Problems and the Solution of the Finite Journal Bearing.” ASME Transactions, Journal of Basic Engr. 81 1959 13 23
- Stambaugh R.L. Kopko R.J. “Behavior of Non-Newtonian Lubricants in High Shear Rate Applications.” SAE Transactions 82 1973 paper 730487
- Harnoy A. Hanin M. “Second Order, Elastico-Viscous Lubricants in Dynamically Loaded Bearings.” ASLE Transactions 17 3 1974 166 171
- Davies M. J. Walters K. “The Behaviour of Non-Newtonian Lubricants in Journal Bearings-A Theoretical Study,” The Rheology of Lubricants Cavenport T. C. Wiley & Sons 1973 66
- Horowitz H. H. Steidler F. E. “Calculated Performance of Non-Newtonian Lubricants in Finite Width Journal Bearings,” ASLE Trans. 4 1961 275 281
- Pinkus O. Sternlicht B. “Theory of Hydrodynamic Lubrication,” McGraw-Hill 1961 35
- Beerbower A. “Scientific and Technical Applications Forecast-Boundary Lubrication,” Dept. of the Army 1972 125 142
- Horowitz H. H. “Predicting the Effects of Temperature and Shear on the Viscosity of V.I. Improved Lubricants,” I & E Chem. 50 1958 1089-94
- Walker D. L. Sanborn D. M. Winer W. O. “Molecular Degradation of Lubricants in Sliding Elastohydrodynamic Contacts,” ASME preprint 74-LUB-35 Oct. 9 1974
- Stambaugh R. L. Kopko R. J. “A Test Procedure for Evaluating Temporary-Shear Loss of Engine Lubricants,” SAE Paper 750379 Detroit 1975