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A Study of Antiseizure Properties of Motor Oils in Crankshaft Bearings
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English
Abstract
Relative comparison of the antiseizure properties of motor oils in crankshaft main bearing was studied by observing the sudden temperature rise at the surface treated bearing, fitted in a Japanese 1.8 1 gasoline engine, using twenty-eight experimental oils and five commercial low viscosity oils. The results obtained are as follows.
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1.
The antiseizure properties of the single grade oils depend directly on their viscosities, and higher viscosity oils have preferable property.
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2.
In case of the multigrade oils, viscosity index improvers (VIIs) play an important role, and the antiseizure properties of the SAE 5W-30 oils vary from that of the SAE 20 single grade oil to the SAE 30 sigle grade oil depending on the VII contained.
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3.
Detergent inhibitor packages and friction modifiers contained in the multigrade oils have a little effect on the antiseizure property.
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Authors
Topic
Citation
Kotani, T., Yamada, S., Okumura, K., and Kobayashi, Y., "A Study of Antiseizure Properties of Motor Oils in Crankshaft Bearings," SAE Technical Paper 821197, 1982, https://doi.org/10.4271/821197.Also In
References
- Haviland Merrill L. Goodwin, Kalcolm C. “Fuel Economy Improvements with Friction-Hodified Engine Oils in EPA and Road Tests” SAE Paper 790945
- Lohuis, J.R. Murphy, J.A. Rogers, T.W. “The Performance of Fuel-Saving Engine Oils” SAE Paper 800436
- Hamaguchi, H. Maeda, Y. Maeda, T. “Fuel Efficient Motor Oil for Japanese Passenger Cars” SAE Paper 810316
- Pike, W.C. Banks, F.R. Kulik, S. “A Simple High Shear Viscometer - Aspects of Correlation with Engine Performance” SAE Paper 780981
- Neudörfl, P. “The Effect of Polymers in Multigrade Lubricating Oils on Engine Wear” SAE Paper 760269
- Stambaugh, R.L. Kopko, R.J. Bennett, P.A. “The Relationship of Journal Bearing Wear to Multigrade Engine Oil Viscometric Properties” SAE Paper 770627
- du Parquet J. Godet, A. “Assessment of Lubrication Conditions in a Big-End Bearing by Temperature Measurements --- Correlation with High Shear Viscosity” SAE Paper 780980
- Smith, M.F. Jr Stewart, R.M. Stringer, H.R. “Shear Stability of Multigrade Crankcase Oils in Cars, Laboratory Engine, and Bench Tests” SAE Paper 720946
- Kuroiwa, M. Preprint A-2, Japan Petroleum Institute 20th Technical Meeting 1977