Dispersant viscosity index improver for enhanced wear protection of engine oils

A technology of engine oil and dispersant, applied in the directions of additives, petroleum industry, lubrication indicating device, etc., can solve problems such as poor fuel economy and achieve the effect of improving performance

Active Publication Date: 2022-05-27
AFTON CHEMICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Fluids with relatively high HTHS viscosities typically exhibit poor fuel economy due to the formation of thicker oil films at the boundaries of engine surfaces during engine operation

Method used

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  • Dispersant viscosity index improver for enhanced wear protection of engine oils
  • Dispersant viscosity index improver for enhanced wear protection of engine oils
  • Dispersant viscosity index improver for enhanced wear protection of engine oils

Examples

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example

[0300] The following examples are illustrative and not limiting of the methods and compositions of the present disclosure. In the following examples, the effect of incorporating a dispersant viscosity index improver (DVII) in an engine oil composition on soot treatment, wear protection and sludge treatment was determined. The DVII used in these examples is an amine functionalized olefin copolymer dispersant viscosity index improver comprising the reaction product of an acylated ethylene-propylene copolymer and a polyamine compound as described herein.

[0301] Table 3 summarizes the components used in Examples 1-6.

[0302] table 3

[0303]

[0304]

[0305] The engine oils of Examples 1-6 were tested using the OM646LA wear test to evaluate wear protection in the engine.

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Abstract

An engine oil composition comprising: greater than 50 wt % of a base oil of lubricating viscosity selected from Group III, IV or V base oils and mixtures thereof; 0.1 wt % - 10 wt % of a dispersant viscosity index improver, The viscosity index improver is the reaction product of an olefin copolymer, an acylating agent, and a polyamine; one or more calcium-containing detergents that provide from about 900 ppmw to about 2500 ppmw to the engine oil composition calcium; and one or more molybdenum-containing compounds. The SAE viscosity grade of the engine oil composition is 0W-X or 5W-X, where X = 16, 20, 30, or 40; phosphorus is from about 500 ppmw to about 1000 ppmw; and a total sulfated ash content as measured by ASTM D874 Not more than 1.2wt%. Methods of lubricating or operating the engine using the engine oil composition are also described.

Description

technical field [0001] The present disclosure relates to engine oils containing multifunctional olefin copolymer viscosity index improvers. More specifically, engine oil compositions comprising multifunctional olefin copolymer viscosity index improvers can provide one or more of good thickening power, excellent dispersibility, improved soot handling, wear protection, and piston cleanliness kind. Background technique [0002] In recent years, the emphasis on fuel economy has increased. One approach to improving vehicle fuel economy is to design new lubricating oils that reduce friction and have lower high temperature high shear ("HTHS") viscosities, while maintaining film thicknesses that meet good durability. Attempts to improve fuel economy and reduce vehicle CO 2 Emissions, the use and regulation of low viscosity grades by Original Equipment Manufacturers (OEMs) are becoming more common. In Europe, some OEMs are considering 0W-xx and 5W-xx viscosity grades for passenge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/04F01M11/10C10N30/02C10N30/06C10N40/25
CPCC10M169/04C10M159/12C10M2203/1025C10M2217/06C10N2010/12C10N2030/02C10N2010/04C10N2030/45C10N2040/252C10N2040/25C10M169/048C10M2205/022C10M2205/0285C10M2207/028C10M2219/046C10N2020/04C10N2030/04C10N2030/06C10N2030/40C10N2030/42C10N2040/253C10M2205/024C10N2020/02C10M169/045C10N2030/68
Inventor 保罗·兰塞姆纪尧姆·卡朋特
Owner AFTON CHEMICAL
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