Temporary Viscosity Loss and Its Relationship to Journal Bearing Performance 780374
To determine the correlation between journal bearing performance and viscosity loss in a capillary, viscosities of eleven base oil-polymer blends were measured in a high-shear, pressurized capillary viscometer (High-Shear Capillary Viscometer, HSCV) at shear rates from 100 to nearly 1 000 000 s-1. Although low-shear kinematic viscosities do not predict bearing performance differences found by Rosenberg with the same oil blends, HSCV viscosities at shear rates near 500 000 s-1 correlate well with the bearing performance data. Differences among polymers are strongly related to molecular weight.
Citation: McMillan, M. and Murphy, C., "Temporary Viscosity Loss and Its Relationship to Journal Bearing Performance," SAE Technical Paper 780374, 1978, https://doi.org/10.4271/780374. Download Citation
Author(s):
Michael L. McMillan, Chester K. Murphy
Affiliated:
Fuels and Lubricants Dept., General Motors Research Labs
Pages: 17
Event:
1978 Automotive Engineering Congress and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 1978 Transactions-V87-A
Related Topics:
Bearings
Kinematics
Polymers
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