Laboratory Methods for Predicting the Viscosity Loss of Polymer Thickened Hydraulic Fluids 680438
The viscosity stability of automatic transmission fluids as measured by the sonic oscillator failed to correlate with that determined in continuous high speed driving. The development of a test based on the use of a power steering pump is described. The effects of motor speed, oil pressure, and oil temperature were determined. Test conditions are described which permit prediction of used oil viscosities for transmission fluids. This test is independent of the chemical class of the V.I. improver.
Citation: Stambaugh, R. and Preuss, A., "Laboratory Methods for Predicting the Viscosity Loss of Polymer Thickened Hydraulic Fluids," SAE Technical Paper 680438, 1968, https://doi.org/10.4271/680438. Download Citation
Author(s):
R. L Stambaugh, A. F. Preuss
Affiliated:
Research Div., Rohm and Haas Co.
Pages: 7
Event:
Mid-Year Meeting
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Transmission fluids
Automatic transmissions
Power steering
Chemicals
Polymers
Pumps
Pressure
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