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Special gear lubricating oil composition for high speed train

A technology for gear lubricating oil and high-speed trains, applied in lubricating compositions, petroleum industry, etc., can solve the problem of high-speed scratch resistance, high-temperature detergency, high-temperature stability, energy saving and friction reduction, which cannot meet the lubrication requirements of high-speed train gear transmission systems, etc. problem, to achieve the effects of excellent high-speed scratch resistance, low production cost, and broad application prospects

Active Publication Date: 2014-01-15
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the gear oil of the train transmission system generally adopts the heavy-duty vehicle gear oil that meets the requirements of API GL-5 specifications. Lubrication Requirements for Train Gear Transmission System

Method used

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  • Special gear lubricating oil composition for high speed train
  • Special gear lubricating oil composition for high speed train
  • Special gear lubricating oil composition for high speed train

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Lubricating oil composition (I), it comprises: 84.8wt% hydroisomerization dewaxed type III base oil No. 4 oil (component A); 14.0wt% polymethacrylate (component B) of molecular weight 800 ); 1.5wt% polya-olefin (component C); 6.0wt% RHY4208GL-5 vehicle gear oil compounding agent (component D); 1.0wt% acidic lauryl phosphite (component E) ; 0.2 wt% thiadiazole n-octyl mercaptan formaldehyde condensate (component F); 2.0 wt% polyisobutenyl succinimide (component G); 0.5 wt% ethylene glycol oleate (Component H). Lubricating oil composition (II) is the same except that 84.8wt% of hydroisomerization dewaxed Group III base oil No. 4 oil in component (A) is replaced by 84.8wt% poly-olefin synthetic oil PAO-4 Composition (I). Lubricating oil composition (Ⅲ) is the same as composition (I) except that 84.8wt% hydroisomerized dewaxed Group III base oil No. 4 oil of component (A) is replaced by 84.8wt% diester synthetic oil. Lubricating oil composition (Ⅳ) is the same as composi...

Embodiment 2

[0027] Lubricating oil composition (Ⅴ), it comprises: the polyalkene synthetic oil PAO-4 of wt%, the diester synthetic oil (component A) of wt%; The polymethacrylate of the molecular weight 800 of 20.0wt% ( Component B); 0.1wt% poly-olefin (component C); 5.0wt% RHY4208A GL-5 vehicle gear oil compound (component D); 0.5wt% acidic lauryl phosphite ( Component E); 0.05 wt% of thiadiazole n-octylamine formaldehyde condensate, 0.05 wt% of n-octyl thiadiazole (component F); 5.0 wt% of borophosphorylated polyisobutenyl succinimide (Component G); 0.3% by weight molybdenum di-n-octyldithiocarbamate (Component H). Lubricating oil composition (VI) is the same as composition (V) except that 0.5 wt% of acidic lauryl phosphite in component (E) is replaced by 0.5 wt% of dodecyl phosphonate. Lubricating oil composition (VII) is the same as composition (V) except that 0.5 wt% of acidic lauryl phosphite in component (E) is replaced by 0.5 wt% of dodecyl phosphate. The test results of composit...

Embodiment 3

[0033] Additive composition (Ⅻ), it includes: 55.6wt% poly-alkene synthetic oil PAO4, 14.4wt% ester synthetic oil diester (component A); 20.0wt% polymethacrylate (component B); 0.1wt% polya-olefin (component C); 3.8wt% RHY4208A API GL-5 vehicle gear oil compound (component D); 0.5wt% dodecyl phosphite, 0.5wt % of dodecyl phosphonate (component E); 0.1wt% of thiadiazole octadecylamine formaldehyde condensate (component F); 2.0wt% of boron phosphated polyisobutenyl succinimide ( Component G); 0.5wt% borated glycerol oleate, 0.25wt% molybdenum di-n-butyldithiocarbamate, 0.25wt% organic molybdenum amine compound (component H). The evaluation results of composition (XII) are listed in Table 3.

[0034] Table 3 Composition (XII) evaluation results

[0035]

[0036]

[0037] The experimental results show that the lubricating oil composition (Ⅻ) has not only passed the L-42, L-37, L-33, L-60, L-60-1 gear bench and FZG gear machine test, but also has the same test as the commer...

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Abstract

The present invention provides a special gear lubricating oil composition for a high speed train. The special gear lubricating oil composition comprises: (A) at least a high viscosity index hydrorefining III mineral oil, or polyolefin synthesis oil, or ester synthesis oil, or an any combination selected from the above components; (B) at least a viscosity index improver; (C) at least a pour point depressant; (D) at least a vehicle gear oil composite additive; (E) at least a phosphorus-containing anti-wear additive; (F) at least a metal deactivation additive; (G) at least an ash-free dispersion additive; and (H) at least an energy-saving friction-reduction agent. The lubricating oil composition has characteristics of excellent high speed anti-scratching performance, excellent high temperature detergency and excellent energy-saving friction-reduction performance, wherein the high speed anti-scratching performance of the lubricating oil composition can be increased by 33% and transmission efficiency can be increased by 15% compared with the commercially available API GL-5 vehicle gear oil.

Description

(1) Technical field [0001] The invention relates to a lubricating oil composition, in particular to an energy-saving lubricating oil composition used in high-speed train gear transmission systems, and belongs to the technical field of lubricating oil and lubricating oil additives. (2) Background technology [0002] With the comprehensive high-speed development of my country's railways, the lubrication requirements for high-speed train gear transmission systems are becoming more and more stringent, mainly in the following aspects: (1) High-speed transmission requires that the transmission system gear lubricants have better high-speed anti-abrasion performance; (2) High speed leads to an increase in the oil temperature of the transmission gearbox, which requires the gear oil of the transmission system to have better high temperature detergency and thermal oxidation stability; (3) The popularization of high-speed railways requires the gear oil of the transmission system to have b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N40/04C10N30/06C10N30/10
Inventor 伏喜胜续景糜莉萍
Owner PETROCHINA CO LTD
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