This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Temporary Engine Oil Viscosity Changes at High Temperatures
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 01, 1975 by SAE International in United States
Annotation ability available
The work starts with the investigation of the temporary viscosity loss of engine oils (SAE Paper No. 740976) and extends to the evaluation of the temporary viscosity changes on multigrade engine oils at the crankshaft bearings of European gasoline engines.
In view of this, oil temperature is measured and a calculation is made of the distribution of shear rates and pressures acting on the lubricant film at the central crankshaft bearing of a European engine.
Then an experimental evaluation is made of the temporary viscosity changes at high temperature of a multigrade oil under the separate action of high shear rates and pressures.
A rolling-ball viscometer is used to measure the temporary viscosity of oil under pressure.
Finally, an attempt is made to draw up a balance of the temporary viscosity of a multigrade oil in the different points of the bearing under examination.
CitationBusetto, G., Capello, G., Giulio, U., and Volpi, E., "Temporary Engine Oil Viscosity Changes at High Temperatures," SAE Technical Paper 750862, 1975, https://doi.org/10.4271/750862.
- Eirich F.R. “Rheology, Theory and Application” New York (USA) Academic Press 1972
- Jakobsen J. Sanborn D.M. Winer W.O. “Simulation of Severe Shear Conditions in Lubrication” Paper 730482 SAE National Automobile Engineering Meeting Detroit (USA) May 1973
- Lyons J.A. “High Shear Viscometry” Esso Symposium “La Modifica della Viscosita' nei Lubrificanti” Milano (Italy) May 1973
- Johnson R.H. Wright W.A. “The Rheology of a Multigraded Motor Oil” SAE Transactions 77 1968 Paper 680072
- Wright W.A. Johnson R.H. “Rheological Properties of Automatic Transmission Fluid” Paper 680437 SAE Mid-Year Meeting Detroit (USA) May 1968
- Novak J.D. Winer W.O. “Some Measurements of High Pressure Lubricant Rheology” Trans. ASME, Journal of Lubrication Technology July 1968
- Jones, W.R. Jr. Johnson R.L. Winer W.O. Sanborn D.M. “Pressure-Viscosity Measurements for Several Lubricants to 5.5·10 8 Newtons per Square Meter and 149°C” NASA Technical Note D-7736
- Appeldoorn J.K. Okrent E.H. Philippoff W. “Viscosity and Elasticity at High Pressures and High Shear Rates” Session on Fundamental Research during the 27th Mid-Year Meeting of the American Petroleum Institute's Division of Refining San Francisco (USA) May 1962
- Philippoff W. “Viscoelasticity of Polymer Solutions at High Pressure and Ultrasonic Frequencies” Journal of Applied Physics 34 May 1963
- Foord C.A. Hammann W.C. Cameron A. “Evaluation of Lubricants Using Optical Elastohydrodinamics” ASLE Transactions 11 1 January 1969
- Westlake F.S. Cameron A. “Optical Elastohydrodynamic Fluid Testing” ASME/ASLE Lubrication Conference Pittsburgh (USA) October 1971
- 1975 SAE Handbook SAE Inc. Warrendale (USA) 1975
- Busetto G.F. Giulio U. Volpi E. “Temporary Viscosity Loss of Engine Oils” Paper 740976 SAE Automobile Engineering Meeting Toronto (Canada) October 1974
- Lo R.S. “Digital Simulation of Engine Lubrication System” Paper 710205 SAE Automotive Engineering Congress Detroit (USA) January 1971
- Schilling A. “Les Huiles pour Moteurs et le Graissage des Moteurs” Edition Technip Paris (France) 1962
- Cameron A. “Basic Lubrication Theory” Longman, London (G.B.) 1971
- Rossi G.C. “Progettazione di cuscinetti di strisciamento cilindrici corti sottoposti a carico costante e in regime di lubrificazione fluente” Ingegneria Meccanica 3 March 1965
- O'Connor J.J. Boyd J. Avallone E.A. “Standard Handbook of Lubrication Engineering” McGraw-Hill Book Co. New York (USA) 1968
- Van Wazer J.R. Lyons J.W. Kim, K.Y. Colwall R.E. “Viscosity and Flow Measurement” Interscience Publishers New York (USA) 1963
- Pressure-Viscosity Report ASME 1953
- Dowson D. Higginson G.R. “Elasto-Hydrodynamic Lubrication” Pergamon Press London (G.B.) 1966
- Lee K.M. Cheng H.S. “The Pressure and Deformation Profiles between Two Normally Approaching Lubricated Cylinders” Trans. ASME, Journal of Lubrication Technology July 1973