Method for lubricating a continuously variable transmission, and a continuously variable transmission

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United States of America Patent

PATENT NO 9725672
APP PUB NO 20120316092A1
SERIAL NO

13579636

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Abstract

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A lubricating oil composition for a continuously variable transmission contains at a specific content: (A) a mineral oil or PAO having a sulfur content of 0.03 mass % or less and a kinematic viscosity at 100 degrees C. from 1.5 mm2/s to 3 mm2/s; (B) a mineral oil or PAO having a sulfur content of 0.03 mass % or less and a kinematic viscosity at 100 degrees C. from 5.5 mm2/s to 8 mm2/s; (C) PAO having a kinematic viscosity at 100 degrees C. from 30 mm2/s to 400 mm2/s; and (D) a polymethacrylate having a mass average molecular weight of 10000 to 40000, in which the total content of the components (C) and (D) is 19 mass % or more and the lubricating oil composition has a kinematic viscosity at 100 degrees C. from 5.5 mm2/s to 6.5 mm2/s and a kinematic viscosity at −20 degrees C. of 680 mm2/s or less.

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Patent Owner(s)

Patent OwnerAddress
NISSAN MOTOR CO LTD (25%)2 TAKARA-CHO KANAGAWA-KU YOKOHAMA-SHI KANAGAWA 221-0023

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Arakawa, Yoshie Fuji, JP 5 33
Fujita, Hiroshi Ichihara, JP 287 3126
Ichihashi, Toshihiko Ichihara, JP 14 132
Kojima, Kenji Fuji, JP 189 1826
Maeda, Makoto Fuji, JP 78 613
Usuki, Hideki Fuji, JP 21 141

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