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Lubricating oil composition, method for producing lubricating oil composition, and continuously variable transmission

A technology of lubricating oil composition and synthetic oil, which is applied in the directions of lubricating composition, petroleum industry, base material, etc., can solve problems such as difficult to take into account

Active Publication Date: 2020-10-27
IDEMITSU KOSAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For lubricating oil compositions used in traction-driven transmissions, from the viewpoint of ensuring high torque transmission capability, high temperature conditions are required (for example, if For automotive applications, a high traction coefficient of about 120°C is required. At the same time, in order to ensure low-temperature startability in cold regions such as North America and Northern Europe, low viscosity is required even at low temperatures (for example, about -40°C). Low temperature fluidity, but these properties are opposite properties, so it is difficult to balance

Method used

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  • Lubricating oil composition, method for producing lubricating oil composition, and continuously variable transmission
  • Lubricating oil composition, method for producing lubricating oil composition, and continuously variable transmission
  • Lubricating oil composition, method for producing lubricating oil composition, and continuously variable transmission

Examples

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Effect test

Embodiment 1

[0113] (Preparation of Lubricating Oil Compositions of Example 1 and Comparative Examples 1 to 6)

[0114] Lubricating oil compositions were produced by compounding according to the formulations shown in Table 1 below. Table 1 shows the evaluation results of properties and performances measured by the above-mentioned method for each lubricating oil composition obtained.

[0115] [Table 1]

[0116]

[0117] The naphthene-based synthetic oils, longifolene, and ester-based synthetic oils described in Table 1 used in this example were represented by the following chemical formulae.

[0118] [chemical 9]

[0119]

[0120] Naphthene-based synthetic oil: R in the general formula (2) shown in the above chemical formula 21 and R 23 is methyl, R 22 is methylene, X 21 and x 22 For bicyclo[2.2.1]heptane ring, p 21 is 2, p 22 1 naphthene-based synthetic oil.

[0121] · Longifolene mixture: (1S, 3aR, 4S, 8aS)-4,8,8-trimethyl-9-methylene-decahydro-1,4-methyl azulene (92 mass %...

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Abstract

Provided are the following: a lubricating oil composition which exhibits a balance between high traction coefficient and excellent low temperature fluidity to a higher degree and which contains (A) anaphthene-based synthetic oil having a high flash point of 140 DEG C or higher, (B) longifolene and (C) a prescribed monoester-based synthetic oil; a method for producing the lubricating oil composition; and a continuously variable transmission that uses the lubricating oil composition.

Description

technical field [0001] The present invention relates to a lubricating oil composition, a method for producing the lubricating oil composition, and a continuously variable transmission. Background technique [0002] Continuously variable transmissions, especially traction drive transmissions, are smaller and lighter than transmissions using gears, and can change gears without metal-to-metal contact, so they are less likely to generate noise. Therefore, traction-driven transmissions are being studied especially for applications centered on electric vehicles. [0003] For lubricating oil compositions used in traction-driven transmissions, a high traction coefficient is required under high temperature conditions (for example, about 120° C. for automotive applications) from the viewpoint of securing a large torque transmission capability, and at the same time , in order to ensure low-temperature startability in cold regions such as North America and Northern Europe, low-temperat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M105/02C10M105/04C10M105/34C10N20/00C10N20/02C10N30/00C10N30/02C10N40/02C10N40/04
CPCC10M169/04C10M2203/04C10M2203/045C10M2207/281C10M2215/28C10N2020/02C10N2020/071C10N2030/08C10N2030/06C10N2030/02C10N2040/045C10M2203/106C10N2020/067C10M105/02C10M105/34C10M2207/2805
Inventor 砂川洋二岩崎猛
Owner IDEMITSU KOSAN CO LTD
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