LUBRICANT COMPOSITION FOR AUTOMOBILE ENGINE LUBRICATION

PROBLEM TO BE SOLVED: To provide a lubricant composition that is highly fuel-efficient and has high wear resistance and is particularly suited for lubrication of a motorcycle four-cycle gasoline engine or a diesel engine vehicle having an exhaust gas after-treatment device.SOLUTION: A lubricant comp...

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Bibliographic Details
Main Authors ANDO KOKI, NAKAZATO MORIKUNI
Format Patent
LanguageEnglish
Published 19.09.2013
Subjects
CHEMISTRY
FUELS
INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS
LUBRICANTS
LUBRICATING COMPOSITIONS
METALLURGY
PEAT
PETROLEUM, GAS OR COKE INDUSTRIES
TECHNICAL GASES CONTAINING CARBON MONOXIDE
USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION
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Summary:PROBLEM TO BE SOLVED: To provide a lubricant composition that is highly fuel-efficient and has high wear resistance and is particularly suited for lubrication of a motorcycle four-cycle gasoline engine or a diesel engine vehicle having an exhaust gas after-treatment device.SOLUTION: A lubricant composition, which is a lubricating oil composition having an SAE viscosity grade of 5W20, comprises a base oil and predetermined amounts of additive components comprising a nitrogen-containing ash-free dispersant, an alkali earth metal-containing detergent, a phosphorus-containing anti-wear agent, an antioxidant, and a viscosity index-improving agent, wherein the viscosity index is within a range of 140 to 230, the high-shear viscosity at 150°C is 2.9 mPa_s or higher, and the NOACK evaporation loss is 13% or less.
Bibliography:Application Number: JP20120051849