MINERAL BASE OIL, LUBRICANT COMPOSITION, INTERNAL COMBUSTION ENGINE, LUBRICATING METHOD OF INTERNAL COMBUSTION ENGINE

Provided is a mineral base oil satisfying the following requirements (I) to (III): ¢ Requirement (I): a kinematic viscosity at 100°C is 2 mm 2 /s or more and less than 7 mm 2 /s; ¢ Requirement (II): a viscosity index is 100 or more; and ¢ Requirement (III): a temperature gradient |·*| of complex...

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Bibliographische Detailangaben
Hauptverfasser:	ANZAI, Hisao, KASAI, Moritsugu, KURODA, Norihiro
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING CHEMISTRY CRANKCASE VENTILATING ENGINE PLANTS IN GENERAL FUELS HEATING INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS LIGHTING LUBRICANTS LUBRICATING COMPOSITIONS LUBRICATING INTERNAL COMBUSTION ENGINES LUBRICATING OF MACHINES OR ENGINES IN GENERAL MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING METALLURGY PEAT PETROLEUM, GAS OR COKE INDUSTRIES STEAM ENGINES TECHNICAL GASES CONTAINING CARBON MONOXIDE USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION WEAPONS
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Beschreibung
Zusammenfassung:	Provided is a mineral base oil satisfying the following requirements (I) to (III): ¢ Requirement (I): a kinematic viscosity at 100°C is 2 mm 2 /s or more and less than 7 mm 2 /s; ¢ Requirement (II): a viscosity index is 100 or more; and ¢ Requirement (III): a temperature gradient \|·*\| of complex viscosity between two temperature points -10°C and -25°C is 60 Pa·s/°C or less as measured with a rotary rheometer under conditions at an angular velocity of 6.3 rad/s and a strain amount of 0.1 to 100%. The foregoing mineral base oil can become a lubricating oil composition having desirable low-temperature viscosity characteristics, including low-temperature fuel consumption and low-temperature engine start-up performance, and also having excellent high-temperature piston detergency.