Development of a Method for the Prediction of Pressure-Viscosity Coefficients of Lubricating Oils Based on Free-Volume Theory

[+] Author and Article Information
C. S. Wu, E. E. Klaus, J. L. Duda

Department of Chemical Engineering, The Pennsylvania State University, University Park, PA 16802

J. Tribol 111(1), 121-128 (Jan 01, 1989) (8 pages) doi:10.1115/1.3261861 History: Received July 22, 1987; Online October 29, 2009


A simple method based on free-volume theory to predict the pressure-viscosity coefficients of liquid lubricants has been developed. The method only requires the viscosity-temperature relationship and the viscosity at the temperature of interest. The method provides good accuracy when it was tested for 162 data points for various fluid types over wide ranges of temperature and viscosity.

Copyright © 1989 by ASME
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