Lubricating fluid for internal combustion engines fueled with alternative combustion fuels having high auto-ignition temperatures
AssigneeAfton Chemical Corporation
InventorsWilliam Anderson, Kenneth Garelick, Nathaniel Cain, Tara Loosmore
Life of this patent
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Abstract
A lubricating oil composition configured for lubricating an internal combustion engine fueled with an alternative fuel having an auto-ignition temperature greater than about 700K. The lubricating oil composition includes select amounts of a viscosity modifier olefin copolymer and/or a select detergent system to mitigate stochastic pre-ignition in internal combustion engines when fueled with the alternative fuels.
Claims20
A lubricating oil composition configured for lubricating an internal combustion engine fueled with a fuel having an auto-ignition temperature greater than about 700K, the lubricating oil composition comprising:
- one or more base oils of lubricating viscosity, wherein the one or more base oils include one or more API Group I base oils, one or more API Group II base oils, or combinations thereof;
- and
- an overbased magnesium-containing metal detergent having a TBN of at least about 200 mg KOH/g (ASTM D2896) and providing about 1000 to about 3000 ppm of magnesium to the lubricating oil composition.
Dependencies are inferred from the claim text.