Some Relationships Between the Viscometric Properties of Motor Oils and Performance in European Engines 770378
Piston ring wear, bearing wear and fuel consumption have been measured in European engines run under fully warmed-up conditions at steady speed and load. The engines were lubricated with motor oils which were formulated from a range of types and concentrations of VI improvers and base oil blends. The viscosities, viscosity/temperature relationships and viscosity/shear-rate characteristics of these formulations varied widely. The results for all the oils tested showed a poor correlation with their low shear-rate viscosities measured at 210°F or 150°C but a good correlation with their viscosities measured at shear rates of 105 to 106 sec-1.
Citation: Bell, J. and Voisey, M., "Some Relationships Between the Viscometric Properties of Motor Oils and Performance in European Engines," SAE Technical Paper 770378, 1977, https://doi.org/10.4271/770378. Download Citation
Author(s):
J. C. Bell, M. A. Voisey
Affiliated:
Shell Research Ltd., Thornton Research Centre
Pages: 14
Event:
1977 International Automotive Engineering Congress and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 1977 Transactions-V86-A
Related Topics:
Fuel consumption
Lubricating oils
Wear
Pistons
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