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Method Of Lubricating An Internal Combustion Engine

a technology of internal combustion engine and compression ignition, which is applied in the petroleum industry, lubricant compositions, etc., can solve the problems of increasing scrutiny of certain alkylphenols and products prepared from them, and achieve the effects of enhancing deposit control, and reducing the impact of soot and soot-related wear

Inactive Publication Date: 2018-02-15
THE LUBRIZOL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

The patent is about a new lubricating oil for use in diesel engines that can help reduce soot, deposits, wear and improve cleanliness. This technology can make engines run better and last longer with less maintenance.

Problems solved by technology

However, certain alkylphenols and products prepared from them have come under increased scrutiny due to their association as potential endocrine disruptive materials.

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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[0270]A series of 15W-40 engine lubricants in Group II base oil of lubricating viscosity are prepared containing the additives described above as well as conventional additives including polymeric viscosity modifier, ashless succinimide dispersant, overbased detergents, as well as other performance additives as follows (Table 1). The phosphorus, sulfur and ash contents of each of the examples are also presented in the table in part to show that each example has a similar amount of these materials and so provide a proper comparison between the comparative and invention examples.

TABLELubricating Compositions1EX1EX2EX3EX4EX5EX615W-40Base OilBalance to 100%1Overbased calcium sulfonate0.700.701.041.041.041.04(Metal ratio 9.2)2Calcium sulfonate (metal0.2650.2650.800.800.800.80ratio 2.7)3Overbased Calcium phenate40.490.490000“Neutral” Calcium phenate0.290.290000Succinimide dispersant53.53.51.7501.751.75Aryl amine succinimide0.50.30.50.30.30.5dispersant6Borated dispersant A700000.540Borated...

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Abstract

The disclosed technology 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 sulfonate detergent having a metal ratio of 10 to 40, an alkaline earth metal sulfonate detergent having a metal ratio of 3 to 9, and a TBN of 81 to 180 mg KOH / g, wherein the sulfonate detergents provide a total amount of sulfonate substrate of 1 wt % to 3 wt % of the lubricating composition, 0.1 to 1.2 wt % of antioxidant, wherein at least 20 wt % of the antioxidant is a phenolic antioxidant, a borated compound present in an amount to deliver 25 ppm to 300 ppm of boron, the lubricating composition has a sulfated ash content of 0.5 wt % to not more than 1.5 wt %, and the lubricating composition has a TBN of 6.5 to 15 mg KOH / g.

Description

FIELD OF INVENTION[0001]The disclosed technology provides 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 sulfonate detergent having a metal ratio of 10 to 40, an alkaline earth metal sulfonate detergent having a metal ratio of 3 to 9, and a TBN of 81 to 180 mg KOH / g, wherein the sulfonate detergents provide a total amount of sulfonate substrate of 1 wt % to 3 wt % of the lubricating composition, 0.1 to 1.2 wt % of antioxidant, wherein at least 20 wt % of the antioxidant is a phenolic antioxidant, a borated compound present in an amount to deliver 25 ppm to 300 ppm of boron, the lubricating composition has a sulfated ash content of 0.5 wt % to not more than 1.5 wt %, and the lubricating composition has a TBN of 6.5 to 15 mg KOH / g.BACKGROUND OF THE INVENTION[0002]Phenol-based ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C10M169/04
CPCC10M169/048C10M2227/062C10M2207/026C10M2219/022C10M2223/045C10M2215/065C10N2220/021C10N2230/041C10N2230/06C10N2230/52C10N2240/10C10M2203/1025C10M2207/027C10M2207/028C10M2207/262C10M2215/064C10M2215/28C10M2219/044C10M2219/046C10M2227/061C10M2205/022C10M2205/024C10M2217/06C10N2020/04C10N2030/041C10N2030/04C10N2030/52C10N2030/12C10N2030/06C10N2020/01C10N2060/14C10N2040/25C10N2040/252C10N2010/04C10N2030/10
Inventor MAYHEW, ALEXANDRAWILBY, ROBERT I.
Owner THE LUBRIZOL CORP
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