Lubricating oil composition for transmission

A technology of lubricating oil composition and transmission, applied in the direction of lubricating composition, petroleum industry, etc., can solve the problem of sufficient research on the use of transmissions, achieve excellent anti-wear joint performance, and improve the effect of anti-wear

Active Publication Date: 2019-06-07
JX NIPPON OIL & ENERGY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Although studies have been made on lubricating oils for engines (Patent Document 2) and lubricating oils for power steering (Patent Document 3) having sliding parts using aluminum-based alloys, they cannot be said to be sufficiently developed for transmission applications. Research

Method used

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  • Lubricating oil composition for transmission
  • Lubricating oil composition for transmission

Examples

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Embodiment 1～25 and comparative example 1～8

[0141] Each of the lubricating oil compositions shown in Examples 1 to 25 of Table 1 (made to have a kinematic viscosity of 5.3 mm at 100° C. 2 / s) and each lubricating oil composition shown in Comparative Examples 1 to 8 for comparison, the wear resistance of each aluminum alloy was evaluated, and the results are listed in Table 1 together. The proportion of the base oil is based on the total amount of the base oil, and the addition amount of each additive is based on the total amount of the composition.

[0142] The wear resistance was evaluated using an SRV tester manufactured by Optimol. The test conditions were set as load 50N, vibration frequency 50Hz, amplitude 2mm, time 30min, and oil temperature was evaluated at 20°C and 80°C. The material of the test piece is column (steel) / disk: (Al die-casting material; ADC12).

[0143] As shown by the results in Table 1, when using the compositions of Examples 1 to 25 described in the present invention, compared with Comparative...

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Abstract

The invention provides a lubricating oil composition for speed changers. The lubricating oil composition has the advantages of low viscosity, excellent oil consumption saving performance, and realization of excellent wear resistance and excellent wear resistant wound jointing property of sliding parts made of Al series alloys. The lubricating oil composition for speed changers comprises lubricating oil base oil (A) with the kinematic viscosity of 1.5-4.5mm<2> / s at 100DEG C, 50-250ppm of a boron-containing ashless dispersant (by B) (B), 50-500ppm of a metal series detergent (by metal) (C) selected from at least one of alkali metal sulfonate, alkali metal salicylate, alkaline earth metal sulfonate and alkaline earth metal salicylate, and 100-600ppm of a phosphorus compound (by P) (D), and the kinematic viscosity of the composition at 100DEG C is below 6.2mm<2> / s.

Description

technical field [0001] The present invention relates to a lubricating oil composition for a transmission. Specifically, it relates to a lubricating oil composition for a transmission that is excellent in fuel efficiency and is particularly suitable for a transmission having a sliding portion of an aluminum-based alloy. The present invention relates to a transmission lubricating oil composition which is particularly suitable for lubricating sliding parts of oil pumps and / or hydraulic control valves and / or valve bodies, and used in automatic transmissions. Background technique [0002] In recent years, in order to reduce carbon dioxide gas in the background of environmental problems, it is urgent to save fuel consumption of automobiles, and there is a strong demand for automatic transmissions to contribute to the improvement of fuel consumption. One of the methods for reducing fuel consumption of an automatic transmission includes reducing the viscosity of the automatic transm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/04C10N30/06C10N30/04C10N40/04
Inventor 栗原功
Owner JX NIPPON OIL & ENERGY CORP
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