Lubricating Oil Composition

a technology of lubricating oil and composition, applied in the direction of liquid carbonaceous fuels, fuel additives, additives, etc., can solve the problems of oxidation catalysts being poisoned and less effective, and achieve the effect of reducing the tendency of base stocks to deteriora
US20110245120A1Inactive Publication Date: 2011-10-06BERSTREETCAR RICHARD D +2
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
BERSTREETCAR RICHARD D
Publication Date
2011-10-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

A lubricating oil composition having a phosphorus content of up to 0.12 wt %, a sulfated ash content of up to 1.2 wt % comprising (a) a major amount of an oil of lubricating viscosity; (b) an alkali metal or alkaline earth metal alkyl salicylate lubricating oil detergent providing from 7-15 mmol salicylate soap per kilogram of lubricating oil composition; (c) one or more dispersants providing the lubricating oil composition with from at least 0.12 wt % to 0.20 wt % atomic nitrogen, based on the weight of the lubricating oil composition, and (d) a dispersant-viscosity modifier.
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Description

[0001] The present invention relates to lubricating oil compositions. More particularly, the present invention relates to lubricating oil compositions for use in engines comprising emission control systems.BACKGROUND OF THE INVENTION

[0002] Environmental concerns have led to continued efforts to reduce the CO, hydrocarbon and nitrogen oxide (NOx) emissions of compression ignited (diesel-fueled) and spark ignited (gasoline-fueled) light duty internal combustion engines. Further, there have been continued efforts to reduce the particulate emissions of compression ignited light duty internal combustion engines. To meet the current and upcoming emission standards for vehicles, original equipment manufacturers (OEMs) rely on the use of exhaust gas after-treatment devices. Such exhaust gas after-treatment devices may include exhaust gas recirculation arrangements and cooled exhaust gas recirculation arrangements, catalytic converters, which can contain one or more oxidation catalysts, NOx st...

Claims

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