发明名称 |
LUBRICANTS WITH ZINC DIALKYL DITHIOPHOSPHATE AND THEIR USE IN BOOSTED INTERNAL COMBUSTION ENGINES |
摘要 |
A lubricating oil composition and method of for providing an acceptable number of low-speed pre-ignition events in a boosted internal combustion engine using the lubricating oil composition. The lubricating oil composition includes greater than 50 wt.% of a base oil of lubricating viscosity, and an additive composition that includes an overbased calcium-containing detergent having a TBN greater than 225 mg KOH/g, and one or more zinc dialkyl dithiophosphate compounds are derived from a molar ratio of secondary alcohol to primary alcohol of 20:100 to about 100:0 and have an average total carbon content of greater than 10 carbon atoms per mole of phosphorous. The lubricating oil compositions contains the overbased calcium-containing detergent in an amount to provide greater than 900 ppm to less than 2400 ppm by weight calcium, and at least 0.01 wt.% of the zinc dialkyl dithiophosphate, both amounts based on the total weight of the lubricating oil composition. |
申请公布号 |
WO2017011691(A1) |
申请公布日期 |
2017.01.19 |
申请号 |
WO2016US42336 |
申请日期 |
2016.07.14 |
申请人 |
AFTON CHEMICAL CORPORATION |
发明人 |
FLETCHER, Kristin;LAM, William Y.;YANG, Kongsheng;STYER, Jeremy |
分类号 |
C10M163/00 |
主分类号 |
C10M163/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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