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A Test to Relate The Loss of Hydrodynamic Lubrication in an Automotive Journal Bearing to Lubricant Viscosity
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Abstract
This paper describes an engine oil test that uses an electrical contact method to determine the loads at which hydrodynamic lubrication is lost in an actual automotive journal bearing. The test is calibrated using newtonian oils so that the effective viscosities of non-newtonian test oils can be determined and compared to those of newtonian oils of specific viscosity grades.
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Dancy, J., Marshall, H., and Oliver, C., "A Test to Relate The Loss of Hydrodynamic Lubrication in an Automotive Journal Bearing to Lubricant Viscosity," SAE Technical Paper 810798, 1981, https://doi.org/10.4271/810798.Also In
References
- Stambaugh R. L. Kopko R. J. “Behavior of Non-Newtonian Lubricants in High Shear Rate Applications,” SAE Paper 730487 , ibid
- Bell J. C. Voisey M. A. “Some Relationships Between the Viscometric Properties of Motor Oils and Performance in European Engines.” SAE Paper 770378 , published in SAE SP 416 (ASTM STP-621) “The Relationship Between Engine Oil Viscosity and Engine Performance,” Part I, SAE 1977
- Lane G. Roberts D. C. Tims J. M. “Measurement of the Viscosity of Multigrade Oils in a Running Engine,” SAE Paper 770379 , ibid
- Stambaugh R. L. Kopko R. J. Bennett P. A. “The Relationship of Journal Bearing Wear to Multigrade Engine Oil Viscometric Properties.” SAE Paper 770637 , published in SAE SP 419 (ASTM STP 621-S1) “The Relationship Between Engine Oil viscosity and Engine Performance - Part II,” SAE 1977
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- Dancy J. H. Marshall H. T. Oliver C. R. “Determining Frictional Characteristics of Engine Oils by Engine Friction and Viscosity Measurements.” SAE Paper 800364 , published in SAE SP-460 (ASTM STP-621-S4) “The Relationship Between Engine Oil Viscosity and Engine Performance - Part V and Part VI” SAE 1980
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- DenHerder M. J. Harnach J. W. Wester D. w. “Oil Viscosity at High Shear Rates Measured by a Floating Journal Bearing.” SAE Paper 780375 , published in SAE SP-429 (ASTM STP-621-S2), SAE 1978
- Pike W. C. Banks P. R. Kulik S. “A Simple High Shear Viscometer - Aspects of Correlations With Engine Performance.” SAE Paper 780981 , published in SAE SP-434 (ASTM STP-621-S3), SAE 1978
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- Bartz W. J. Wissussek D. “The Influence of the Effective Viscosity of Non-Newtonian Oil on the Behavior of Journal Bearings,” ASLE Paper 8G-LC-5C-1 presented at the ASME-ASLE International Lubrication Conference August 1980