Lubricating composition suitable for diesel engines
AssigneeExxonMobil Research and Engineering Company
InventorsKevin Louis Crouthamel, Vincent Mark Carey, Peter Calcavecchio, Evelyn Nobles Drake, Kevin John Kelly, Liehpao Oscar Farng
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Abstract
An improved lubricating composition suitable for diesel engines comprising a major amount of at least one oil of lubricating viscosity and a minor amount of an alkylamine-alkylphosphate additive. The alkylamine-alkylphosphate additive comprises from at least 1.25 equivalents of alkylamine to 1.0 equivalents of alkylphosphate.
Claims9
A method comprising;
- enhancing corrosion and wear protection properties of a fully formulated marine diesel engine oil composition designed for use in engines burning high-sulfur containing residual fuels by composition having metal detergents from 0.5 wt % to 30 wt % of the composition wherein the metal detergents, calcium phenate, magnesium phenates, calcium sulfurates, magnesium sulfonates, calcium salicylate, magnesium salicylates, and any combination thereof adding to a natural oil from about 0.05 to 2.5 wt % of an alkylamine-alkylphosphate additive comprising at least 1.25 equivalents of alkylamine to 1.0 equivalents of alkylphosphate.
A method for reducing corrosion and wear in diesel engines operating on high sulfur fuels, the method comprising lubricating the engine with a lubricating composition comprising a major amount of a natural oil of lubricating viscosity and from about 0.05 to 2.5 wt % of an alkylamine-alkylphosphate additive comprising from at least 1.25 equivalents of alkylamine to 1.0 equivalents of alkylphosphate.
Dependencies are inferred from the claim text.