Method of lubricating an internal combustion engine

Inactive Publication Date: 2016-11-10
THE LUBRIZOL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0060]In another embodiment the invention provides for the use of a lubricating composition disclosed herein to provide at least one of reduced soot, reduced

Problems solved by technology

However, certain alkylphenols and products prepared from them have come under incre

Method used

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  • Method of lubricating an internal combustion engine
  • Method of lubricating an internal combustion engine
  • Method of lubricating an internal combustion engine

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Example

[0061]The present invention provides a method for lubricating an internal combustion engine and a use as disclosed above.

Oils of Lubricating Viscosity

[0062]The lubricating composition comprises an oil of lubricating viscosity. Such oils include natural and synthetic oils, oil derived from hydrocracking, hydrogenation, and hydrofinishing, unrefined, refined, re-refined oils or mixtures thereof. A more detailed description of unrefined, refined and re-refined oils is provided in International Publication WO2008 / 147704, paragraphs [0054] to

[0063](a similar disclosure is provided in US Patent Application 2010 / 197536, see [0072] to [0073]). A more detailed description of natural and synthetic lubricating oils is described in paragraphs [0058] to [0059] respectively of WO2008 / 147704 (a similar disclosure is provided in US Patent Application 2010 / 197536, see [0075] to [0076]). Synthetic oils may also be produced by Fischer-Tropsch reactions and typically may be hydroisomerised Fischer-Trop...

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Abstract

The invention provides a method of lubricating a compression-ignition internal combustion engine with a maximum laden mass over 2,700 kg comprising supplying to the engine a lubricating composition comprising: an oil of lubricating viscosity, a 300 TBN or higher alkaline earth metal sulphonate detergent having a metal ratio of 10 to 40, 0.1 wt % to 4 wt % of a borated polyisobutylene succinimide dispersant, wherein the polyisobutylene from which the borated polyisobutylene succinimide is derived has a number average molecular weight of 550 to 1150, and 0.1 wt % to 6 wt % of a polyisobutylene succinimide, wherein the polyisobutylene from which polyisobutylene succinimide is derived has a number average molecular weight of 1550 to 2500, 0 wt % to 0.2 wt % of a phenolic based detergent, wherein the total amount of soap delivered by the alkaline earth metal sulphonate (typically calcium sulphonate) is 0.4 to 1 wt % of the lubricating composition, and wherein the lubricating composition has a sulphated ash content of not more than 1.5 wt %.

Description

FIELD OF INVENTION[0001]The invention provides a method of lubricating a compression-ignition internal combustion engine with a maximum laden mass over 2,700 kg comprising supplying to the engine a lubricating composition comprising: an oil of lubricating viscosity, a 300 TBN or higher alkaline earth metal sulphonate detergent having a metal ratio of 10 to 40, 0.1 wt % to 4 wt % of a borated polyisobutylene succinimide dispersant, wherein the polyisobutylene from which the borated polyisobutylene succinimide is derived has a number average molecular weight of 550 to 1150, and 0.1 wt % to 6 wt % of a polyisobutylene succinimide, wherein the polyisobutylene from which polyisobutylene succinimide is derived has a number average molecular weight of 1550 to 2500, 0 wt % to 0.2 wt % of a phenolic based detergent, the total amount of soap delivered by the alkaline earth metal sulphonate (typically calcium sulphonate) is 0.4 to 1 wt % of the lubricating composition, and the lubricating comp...

Claims

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Application Information

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IPC IPC(8): C10M161/00
CPCC10M161/00C10M2217/06C10M2219/044C10M2219/046C10M2207/027C10M2223/045C10N2220/021C10N2230/04C10N2230/10C10N2230/06C10N2230/52C10N2230/45C10N2240/102C10M163/00C10M167/00C10M2205/022C10M2207/026C10M2207/028C10M2207/262C10M2215/064C10M2215/086C10M2219/082C10M2219/084C10M2205/02C10M2215/28C10M2219/088C10M2219/089C10N2020/04C10N2030/04C10N2010/04C10N2030/06C10N2030/43C10N2030/42C10N2030/45C10N2030/52C10N2040/252C10N2060/14C10M2205/024C10N2030/10
Inventor GALIC RAGUZ, MARYLOOP, JOHN G.
Owner THE LUBRIZOL CORP
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