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Engine lubricant composition

A lubricant composition, engine technology, applied in the direction of lubricating composition, additives, petroleum industry, etc., can solve the problems of improving engine cleanliness, not describing polyalkylene glycol, not increasing gasoline or diesel fuel consumption, etc.

Inactive Publication Date: 2020-09-01
TOTAL MARKETING SERVICES SA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, the document does not describe the use of specific polyalkylene glycols to improve engine cleanliness without increasing gasoline or diesel fuel consumption

Method used

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  • Engine lubricant composition
  • Engine lubricant composition
  • Engine lubricant composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0171] The control composition T was prepared as follows 1 and composition L 1 and L 2 :

[0172] - mixtures of Group III base oils,

[0173] - Additive package including ZnDTP type antiwear additives, amino and phenolic antioxidants, succinimide type dispersants, salicylate type detergents,

[0174] - molybdenum dithiocarbamate (MoDTC),

[0175] - a star-shaped hydrogenated, styrene / isoprene (HIS) viscosity index improver polymer having a mass Mw equal to 498700 (measured according to standard ASTM D5296), having a mass Mn equal to 325900 (measured according to standard ASTM D5296 ), having a polydispersity index equal to 1.5.

[0176] - polyalkylmethacrylate (PAMAd) grafted with vinylpyrrolidone units, having a mass Mw equal to 206900 (measured according to standard ASTM D5296), having a mass Mn equal to 75320 (measured according to standard ASTM D5296), having equal to a polydispersity index of 2.7,

[0177] - BO / PO (butylene oxide / propylene oxide) PAG with a mass ra...

Embodiment 2

[0194] A control composition T was prepared from the same ingredients as above, except that another polyalkylene glycol was used as follows 2 and composition C 1 -C 4 : BO / PO PAG with a mass ratio of 50 / 50, a KV100 equal to 4 cSt (measured according to standard ASTM D445) and a molar mass equal to 505 g / mol (measured according to standard ASTM D4274).

[0195] The proportions in mass percent of the different ingredients are shown in Table III below. The ratio of the mixture of base oil and viscosity index improver polymer is adjusted such that for grade 5W-30, the lubricant composition T 2 、C 1 -C 4 have equal viscosity.

[0196] Then, the lubricant composition T is measured on the driven DW10C test engine 2 、C 1 -C 4 "Fuel Economy" gain. The conditions for this test are as follows:

[0197] The engine is driven by a generator making it possible to enforce a rotational speed between 750 and 3000 rpm, while a torque sensor makes it possible to measure the frictional t...

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Abstract

The invention relates to an engine lubricant composition. The engine lubricant composition comprises at least one base oil, at least one polymer viscosity index improver and at least one polyalkyleneglycol obtained by polymerization or copolymerization of alkylene oxides comprising from 3 to 8 carbon atoms, including at least one epoxybutane, and the amount of the polyalkylene glycol is 1-28% bymass relative to the total mass of the lubricant composition. The use of at least one polyalkylene glycol obtained by the polymerization or copolymerization of alkylene oxides comprising 3 to 8 carbonatoms, including at least one epoxybutane, in base oils improves the engine cleanliness without increasing, or actually and simultaneously reducing the consumption of gasoline or diesel fuel of an engine.

Description

[0001] This application is a divisional application of the Chinese invention patent application with the application number 201380027811.4, the application date is May 3, 2013, and the invention name is "engine lubricant composition". technical field [0002] The present invention relates to a lubricant composition for engines, in particular for gasoline or diesel vehicles, the use of which makes it possible to simultaneously obtain a satisfactory degree of engine cleanliness and a reduction in fuel consumption of said vehicles. Background technique [0003] Energy efficiency of motor vehicle engines and reducing fuel consumption are growing concerns. It is known that the lubricants for the engines used in said vehicles play an important role in this respect. [0004] In order to formulate "fuel economy" or fuel economy lubricants, it is known to act on the viscosity of the lubricant base used. It is also known to use viscosity index (VI) improver polymers, or to use fricti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N40/25C10N30/02C10N30/04C10N30/06
CPCC10M145/00C10M145/26C10M145/32C10M157/00C10M2203/1025C10M2205/02C10M2205/022C10M2205/028C10M2205/04C10M2207/026C10M2207/262C10M2207/289C10M2209/084C10M2209/105C10M2209/106C10M2215/064C10M2215/28C10M2219/068C10M2223/045C10N2030/04C10N2030/02C10N2030/54C10N2040/252C10N2040/253C10N2040/255C10M2217/028C10N2010/12C10N2020/04C10N2020/02C10N2010/04C10M2205/06C10N2060/02C10M145/34C10M161/00
Inventor J.格林N.奥布雷希特N.凯利杰
Owner TOTAL MARKETING SERVICES SA
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