ADDITIVES AND LUBRICATING OIL COMPOSITIONS FOR IMPROVING LOW SPEED PRE-IGNITION

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United States of America Patent

SERIAL NO

15047934

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Abstract

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A lubricating oil composition and method of operating a spark ignition combustion engine. The lubricating oil composition includes a major amount of a base oil of lubricating viscosity and an additive composition that includes an over-based detergent and a low-based/neutral detergent, wherein a total amount of calcium from the over-based and low-based/neutral detergent ranges from greater than 1100 ppm by weight to less than 2400 ppm by weight based on a total weight of the lubricating oil composition. The lubricating oil composition is effective to reduce low-speed pre-ignition events in a turbocharged gasoline engine lubricated with the lubricating oil composition.

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Patent Owner(s)

Patent OwnerAddress
AFTON CHEMICAL CORPORATION500 SPRING STREET RICHMOND VA 23219

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
FLETCHER, Kristin Richmond, US 14 42
LAM, William Y Glen Allen, US 44 330
STYER, Jeremy Glen Allen, US 9 30
YANG, Kongsheng Glen Allen, US 15 36

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