Power-assisted steering oil composition

An oil composition, power steering technology, applied in the direction of lubricating composition, petroleum industry, etc., can solve the problems of abnormal wear in the start-up stage, there is no power steering oil in extremely cold areas, frequent problems, etc., and achieve the best low temperature fluidity and The effect of excellent viscosity-temperature, susceptibility, and good compatibility

Active Publication Date: 2017-04-26
LIAONING RUNDI AUTOMOTVE ENVIRONMENTAL PROTECTIONTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Conventional power steering oil cannot meet the normal operation of the power steering system under extremely cold conditions, which will cause abnormal wear during the start-up phase
When the conventional power steering oil works at high temperature in the power steering system, its viscosity is low and cannot form a continuous oil film, which will easily cause abnormal wear of the power steering system
Moreover, these products are not designed according to the use environment and working conditions, so problems occur frequently
[0006] The power steering system of domestic and foreign vehicles mainly uses 6#, 8# hydraulic transmission fluid and ATF automatic transmission fluid. Since they are not special oil products, their performance cannot meet the requirements of power steering systems under low temperature conditions.
Moreover, there is currently no power steering oil suitable for extremely cold regions.

Method used

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  • Power-assisted steering oil composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Choose to account for the base oil of 94.5% of the total weight of the present invention, 0.195% of polyisobutylene bis-succinimide, 0.5% of polymethyl methacrylate, 0.03% of tolyltriazole derivatives, 4% of styrene Polyester, 0.5% sulfurized isobutylene, 0.08% dialkyl diphenylamine, 0.03% neutral trimethylphenol phosphate, 0.005% composite antifoaming agent, 0.04% high base value synthetic calcium sulfonate, 0.04 % medium alkali value synthetic calcium sulfonate, 0.08% neutral barium dinonyl naphthalene sulfonate; the base oil is selected from adipate glycol ether ester accounting for 66.14% of the total weight of the base oil, accounting for 33.86% of the total weight of the base oil PAO2. Preparation method: Turn on the gear pump, open the feed valve, start stirring, put in the base oil first, then put in various additives in turn, after feeding, raise the temperature to 55°C, keep for 4 hours until all the additives are mixed evenly.

Embodiment 2

[0044]Choose to account for the base oil of 94.005% of the total weight of the present invention, 0.09% polyisobutylene polysuccinimide, 0.05% monosuccinimide, 0.3% polyacrylate, 0.2% polyalpha-olefin, 0.04 % of tolyltriazole derivatives, 4.5% of poly-n-butyl vinyl polyether, 0.2% of di-n-butyl phosphite, 0.3% of triphenyl thiophosphate, 0.06% of copper-containing salt compounds, 0.05% Zinc Dialkyl Dithiophosphate, 0.005% Simethicone, 0.04% Low Base Value Synthetic Calcium Sulfonate, 0.06% Low Base Value Calcium Petroleum Sulfonate, 0.1% Sodium Petroleum Sulfonate; base oil The adipate glycol ether ester accounting for 68.09% of the total weight of the base oil, the PAO2 accounting for 26.59% of the total weight of the base oil, and the PAO4 accounting for 5.32% of the total weight of the base oil are selected for use. Preparation method: Turn on the gear pump, open the feed valve, start stirring, put in the base oil first, then put in various additives in turn, after feeding,...

Embodiment 3

[0045] Select the base oil that accounts for 93.525% of the total weight of the present invention, 0.3% polymer succinimide, 0.4% vinyl acetate copolymer, 0.03% thiadiazole derivatives, 2% polymethacrylate, 3% polyisobutylene, 0.4% aminothioester, 0.1% copper-containing salt compound, 0.08% bis-octyl ZDDP, 0.005% simethicone, 0.04% super-based synthetic magnesium sulfonate, 0.04% Sulfurized alkyl phenate, 0.08% dodecenyl succinic acid; base oil selection accounted for 64.27% of the total weight of the base oil adipate glycol ether ester, accounted for 30.47% of the total weight of the base oil PAO2, accounting for the base oil Total weight 5.26% PAO6. Preparation method: Turn on the gear pump, open the feed valve, start stirring, put in the base oil first, then put in various additives in turn, after feeding, raise the temperature to 55°C, keep for 4 hours until all the additives are mixed evenly. Example 4,

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Abstract

The invention relates to a power-assisted steering oil composition, and mainly aims to solve a problem that the power-assisted steering oil suitable for extremely cold areas is not found at present. The power-assisted steering oil composition comprises the following components by weight: 93.525-94.5% of base oil, 0.14-0.3% of a dispersant, 0.35-0.5% of a pour point depressant, 0.03-0.05% of a metal deactivator, 4.0-5.0% of a viscosity index improver, 0.3-0.5% of an extreme pressure antiwear agent, 0.06-0.1% of an antioxidant, 0.03-0.08% of an oxidation and corrosion inhibitor, 0.005% of an anti-foam agent, 0.08-0.1% of detergent and 0.08-0.1% of an anti-rust agent. The power-assisted steering oil composition has advantages of excellent low temperature fluidity and viscosity temperature property, high flash point, and good anti-foam property.

Description

[0001] Technical field: [0002] The invention relates to a power steering oil composition, in particular to a power steering oil filled in a power steering pump. [0003] Background technique: [0004] The power steering is a new technology that reduces the steering force of the driver. When the driver is steering, the engine drives the power pump to provide steering assistance. The driver can use it to achieve greater steering with a smaller steering force. Force control, so as to reduce the driver's physical exertion of manipulating the steering wheel, and the power steering oil is a kind of medium oil filled in the power steering pump, which plays the role of transmitting pressure and buffering. [0005] Conventional power steering oil cannot meet the normal operation of the power steering system under extremely cold conditions, and will cause abnormal wear during the start-up phase. Conventional power steering oil has low viscosity and cannot form a continuous oil film wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N30/08C10N30/18
CPCC10M169/048C10M2205/02C10M2205/0206C10M2205/022C10M2205/024C10M2205/026C10M2207/12C10M2207/144C10M2207/281C10M2207/282C10M2209/08C10M2209/084C10M2209/102C10M2209/103C10M2215/064C10M2215/223C10M2217/06C10M2219/044C10M2219/06C10M2219/082C10M2219/087C10M2219/106C10M2223/041C10M2223/045C10M2223/047C10M2223/049C10M2229/041C10N2030/08C10N2030/18C10N2010/02C10N2010/04
Inventor 王宝峰邹建波孙慧罗旭东
Owner LIAONING RUNDI AUTOMOTVE ENVIRONMENTAL PROTECTIONTECH
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