LUBRICANT OIL COMPOSITION
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United States of America Patent
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N/A
Issued Date -
Dec 22, 2016
app pub date -
Mar 4, 2015
filing date -
Mar 4, 2014
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Provided is a lubricating oil composition favorable for reducing friction in a sliding mechanism equipped with a piston ring and a liner, in a device having the sliding mechanism. The lubricating oil composition contains a lubricant base oil, (1) a polymethacrylate and/or an olefin copolymer having a mass-average molecular weight of 100,000 to 600,000, and (2) an ester-type ashless friction modifier and/or an amine-type ashless friction modifier, and has a shear viscosity at 150° C. of 2.3 mPa· or more and less than 3.7 mPa·s.
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