A Test Procedure for Evaluating Temporary-Shear Loss of Engine Lubricants
作者： R. L. Stambaugh , R.J. Kopko
DOI: 10.4271/750379
关键词:
摘要: Temporary shear loss characteristics of multigraded engine oils were measured in a newly developed oil pump rig. Correlations the results with high pressure capillary viscometry data indicate that test apparatus generates rates range 2--3 X 10 to 5th power s minus one power. One advantage this technique over similar mechanical approaches is rig causes virtually no permanent degradation. Test are reported for variety polymer types, and relationship temporary losses discussed. /GMRL/
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