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Lubricating oil composition

A technology of lubricating oil composition and olefin polymer, applied in lubricating composition, petroleum industry, additives, etc., can solve the problem of expensive base oil

Inactive Publication Date: 2009-07-29
INFINEUM INT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Group IV and V base stocks are more expensive than Group I, II and III mineral oil base stocks

Method used

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  • Lubricating oil composition
  • Lubricating oil composition
  • Lubricating oil composition

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Experimental program
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Embodiment

[0133] According to API CJ-4 and CI-4 specification (1.0 mass % SASH, 0.4 mass % sulfur and 0.12 mass % phosphorus), formulate SAE 5W40 grade lubricant in the blend of 4 cSt. and 6 cSt. III base oil, its Contains base oil, dispersant (combination of boronated and non-borated dispersant), detergent (combination of calcium phenate, calcium sulfonate and magnesium sulfonate detergent), ZDDP, soot dispersant, ashless Combination of sulfur phenolic antioxidant and amine antioxidant (total 0.7% by mass), molybdenum dithiocarbamate compound, viscosity modifier, pour point depressant and 1% by mass of polybutene (PIB) with Mn of 950 ). The resulting oil had a boron content of 65 ppm, a magnesium content of 1156 ppm, a molybdenum content of 44 ppm, a TBN of 9.9, and 79% of the TBN produced by the overbased detergent (52% of the composition's TBN) was cleaned by the overbased magnesium agent provided.

[0134] The wear of the valve train using the above lubricants was measured in the ...

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Abstract

The invention relates to a lubricating oil composition, provides a SAE 0W and SAE 5W multigrade crankcase lubricating oil composition for heavy duty diesel (HDD) engines meeting the performance requirements of at least one of the API CJ-4; API-CI-4, and / or ACEA E7 specifications, having a sulfated ash content of no greater than 1.0 mass %, a sulfur content of no greater than 0.4 mass %, and a phosphorus content of no greater than 0.12 mass %, formulated with a major amount of oil of lubricating viscosity including less than about 30 mass %, based on the total mass of oil of lubricating viscosity, of Group IV and / or Group V base stock, at least 0.3 mass %, of a non-hydrogenated olefin polymer; and greater than about 40 ppm of boron.

Description

technical field [0001] The present invention relates to a SAE 0W and SAE 5W multigrade crankcase lubricant for heavy duty diesel (HDD) engines, having less than 50% by mass of Group IV and V base oils, containing phosphorus based antiwear agents, phosphorus The amount of base antiwear agent introduces no more than 1200 ppm phosphorus in the lubricant, and the lubricant meets the wear performance requirements of API CJ-4, API CI-4 and / or ACEA E7 specifications. Background technique [0002] Crankcase lubricants contain a base oil and additives that delay the degradation of the base oil and improve its performance. Such additives typically include dispersants, overbased and neutral salts of organic acids, corrosion inhibitors, antiwear agents, antioxidants, friction modifiers, defoamers and demulsifiers. These additives can be combined into packages, sometimes referred to as detergent inhibitor (or DI) packages. Additives in such kits can include functionalized polymers, but...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M143/00
CPCC10N2210/02C10N2220/021C10N2260/14C10M167/00C10M2205/026C10M2203/1025C10N2230/44C10N2230/43C10N2230/45C10M2207/028C10M2219/068C10N2230/06C10N2230/52C10N2240/102C10M2223/045C10N2230/42C10M2219/046C10N2020/04C10N2010/04C10N2030/06C10N2030/44C10N2030/43C10N2030/42C10N2030/45C10N2030/52C10N2040/252C10N2060/14C10N2010/12C10N2020/02
Inventor N·Z·迪格斯T·J·穆拉内R·R·萨尔盖罗
Owner INFINEUM INT LTD
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