Journal
TRIBOLOGY TRANSACTIONS
Volume 45, Issue 3, Pages 390-396Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/10402000208982564
Keywords
viscosity; viscosity-pressure behavior; elastohydrodynamic lubrication; hydrodynamic lubrication; viscosity-temperature behavior
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The piezoviscous effect is accurately characterized for a number of representative lubricating oil base stocks and a simple, well-defined hydrocarbon. Procedures for the generation of accurate pressure-viscosity coefficients are outlined. The reciprocal asymptotic isoviscous pressure may be measured to within perhaps 1%. The piezoviscous effect may be important to automotive fuel economy. The departure from exponential behavior at very low pressure becomes more pronounced at high temperature.
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