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Shear rheological characterization of motor oilsMeasurements of high pressure viscosity, traction coefficient, and EHD film thickness were performed on twelve commercial automotive engine oils, a reference oil, two unformulated base oils and two unformated base oil and polymer blends. An effective high shear rate inlet viscosity was calculated from film thickness and pressure viscosity coefficient. The difference between measured and effective viscosity is a function of the polymer type and concentration. Traction measurements did not discriminate mileage formulated oils from those not so designated.
Document ID
19880060335
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Bair, Scott
(Georgia Inst. of Tech. Atlanta, GA, United States)
Winer, Ward O.
(Georgia Institute of Technology Atlanta, United States)
Date Acquired
August 13, 2013
Publication Date
July 1, 1988
Publication Information
Publication: STLE Tribology Transactions
Volume: 31
ISSN: 0569-8197
Subject Category
Nonmetallic Materials
Accession Number
88A47562
Funding Number(s)
CONTRACT_GRANT: NSG-3106
CONTRACT_GRANT: DOT-RS56-80-C-00015
Distribution Limits
Public
Copyright
Other

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