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Lubricating oil base oil, lubricating oil composition containing lubricating oil base oil, and continuously variable transmission using lubricating oil composition

一种润滑油基础油、环化合物的技术，应用在润滑组合物、基料、有机化学等方向，达到高牵引系数、优异低温流动性的效果

Active Publication Date: 2020-11-10
IDEMITSU KOSAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, in order to ensure low-temperature startability in cold regions such as North America and Northern Europe, low-temperature fluidity such as low viscosity is required even at low temperature conditions (for example, around -40°C), but these properties are opposite properties, so Difficult to balance

Method used

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  • Lubricating oil base oil, lubricating oil composition containing lubricating oil base oil, and continuously variable transmission using lubricating oil composition
  • Lubricating oil base oil, lubricating oil composition containing lubricating oil base oil, and continuously variable transmission using lubricating oil composition
  • Lubricating oil base oil, lubricating oil composition containing lubricating oil base oil, and continuously variable transmission using lubricating oil composition

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Embodiment

[0144] Next, the present invention is further specifically described through examples, but the present invention is not limited by these examples.

[0145] The properties and performance of lubricating base oils were measured by the following methods.

[0146] (1) Kinematic viscosity

[0147] The kinematic viscosity at 40°C and 100°C was measured in accordance with JIS K 2283:2000.

[0148] (2) Viscosity Index (VI)

[0149] Obtained according to JIS K 2283:2000.

[0150] (3) Density at 15°C

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Abstract

Provided are a lubricant base oil, a lubricant composition containing the lubricant base oil, and a continuously variable transmission using the lubricant composition. The lubricant base oil gives consideration to a high traction coefficient and excellent low-temperature fluidity in a higher dimension, and has a high flash point. The lubricant base oil contains a cyclic compound having at least (i) a bridged bicyclic ring in which two rings are bonded together so as to share three or more carbon atoms, and (ii) an acyloxy group or a hydrocarbyloxycarbonyl group containing a branched hydrocarbon group having a main chain having 4 or more carbon atoms.

Description

technical field [0001] The present invention relates to a lubricating oil base oil, a lubricating oil composition containing the lubricating oil base oil, and a continuously variable transmission using the lubricating oil composition. 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 for applications such as transmissions for power generation with quietness, especially for electric vehicles. [0003] From the viewpoint of securing a large torque transmission capacity, lubricating oil compositions used in traction drive transmissions require high traction coefficients under high temperature conditions (for example, around 140° C.). On the other hand, in order to ensure low-temperature startability in cold regio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M105/32C10M105/34C10N30/00C10N30/02C10N40/04
CPCC10M105/34C10N2030/06C10N2030/02C10N2020/02C10N2040/046C10M2203/04C10M2203/045C10N2040/045C10M2207/2815C10N2020/071C10M2207/085C10M2207/2805C07C69/753C07C2602/42C07C2602/44
Inventor 绪方贤一小岛明雄岩崎猛
Owner IDEMITSU KOSAN CO LTD
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