Full-synthetic continuously variable transmission (CVT) transmission fluid as well as preparation method and application thereof

A continuously variable transmission and transmission fluid technology, applied in the field of automobile transmission fluid, can solve the problems of less CVTF, large differentiation, and late CVT research, and achieve the effects of high transmission efficiency, excellent comprehensive performance, and excellent viscosity index

Inactive Publication Date: 2014-04-16
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] And domestic research is late about CVT, corresponding CVTF research is seldom, there is no fully synthetic CVTF patent report, only see one CN100448964C patent report about CVT transmission fluid, mainly explain with self-made naphthenic oil as CVTF base oil and Formula research, the highest traction coefficient is about 0.12, and has a very high viscosity index and low temperature fluidity
[0006] The transmission fluids in these domestic and foreign patents mainly use mineral oil as the base oil, and the traction coefficient is used to evaluate the performance of CVTF. Whether it can truly reflect the application performance of CVTF in the actual working conditions of CVT is worth exploring. In addition, the existing patents only evaluate some simple indicators of CVTF, such as viscosity index, low temperature performance, and viscosity, and the differences are large. More importantly, they do not evaluate the key indicators of CVTF, such as transmission efficiency, oxidation resistance, shear The overall performance of CVTF given by some patents cannot meet the special requirements of continuously variable transmissions.

Method used

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  • Full-synthetic continuously variable transmission (CVT) transmission fluid as well as preparation method and application thereof
  • Full-synthetic continuously variable transmission (CVT) transmission fluid as well as preparation method and application thereof
  • Full-synthetic continuously variable transmission (CVT) transmission fluid as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1: Preparation of fully synthetic continuously variable transmission transmission fluid

[0039] Heat 100Kg IV base oil to 45°C, add 5Kg polymethacrylate at a stirring speed of 500rpm, stir at 500rpm for 20min and dissolve completely; then add 0.6Kg trinonyl phosphite, 1.8Kg dialkyl disulfide Phosphate amine salt, 0.6Kg thiophosphated polyisobutylene barium salt, 2.4Kg high base number sulfurized alkyl phenol calcium, 6Kg polyisobutylene succinimide, 0.2Kg phenyl-α-naphthylamine, 0.4Kg2,2 ,4-trimethyl-1,2-dihydroquinoline polymer, 0.2Kg sterically hindered phenol derivative, 1Kg benzene triazole fatty acid ammonium salt and 2Kg imidazoline borate oleate were stirred at 500rpm for 60min to obtain the total synthesis CVT transmission fluid.

Embodiment 2

[0040] Example 2: Preparation of fully synthetic continuously variable transmission transmission fluid

[0041] Mix 100Kg IV base oil and 5Kg V base oil, heat to 60°C, add 3Kg polymethacrylate at a stirring speed of 800rpm, stir at 600rpm for 60min to dissolve completely; then add 0.25Kg trinonyl phosphite , 0.25Kg dialkyldithiophosphate amine salt, 0.8Kg sulfur phosphide polyisobutylene barium salt, 1.2Kg high base number sulfurized alkyl phenol calcium, 3.5Kg polyisobutylene succinimide, 0.1Kg phenyl- α-naphthylamine, 0.3Kg 2,2,4-trimethyl-1,2-dihydroquinoline polymer, 0.2Kg sterically hindered phenol derivative, 0.8Kg benzene triazole fatty acid ammonium salt and 1.2Kg imidazole oleate The boronic acid ester was stirred at 600 rpm for 90 min to obtain a fully synthetic continuously variable transmission fluid.

Embodiment 3

[0042] Example 3: Preparation of fully synthetic continuously variable transmission transmission fluid

[0043]Mix 100Kg IV base oil and 10Kg V base oil, heat to 60°C, add 3Kg polymethacrylate at a stirring speed of 600rpm, stir at 800rpm for 50min to dissolve completely; then add 0.8Kg trinonyl phosphite , 1.2Kg dialkyldithiophosphate amine salt, 1Kg sulfur phosphide polyisobutylene barium salt, 1.5Kg high base number sulfurized alkyl phenol calcium, 2Kg polyisobutylene succinimide, 0.1Kg phenyl-α- Naphthylamine, 0.25Kg 2,2,4-trimethyl-1,2-dihydroquinoline polymer, 0.15Kg sterically hindered phenol derivative, 0.5Kg benzene triazole fatty acid ammonium salt and 0.5Kg imidazoline boron oleate The ester was stirred at 800 rpm for 70 minutes to obtain a fully synthetic continuously variable transmission fluid.

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PUM

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Abstract

The invention belongs to the technical field of automobile transmission and discloses full-synthetic continuously variable transmission (CVT) transmission fluid as well as a preparation method and application thereof. The transmission fluid comprises the following components in parts by weight: 100 parts of type IV base oil, 0-20 parts of type V base oil, 0.5-2.4 parts of an anti-wear agent, 2-5 parts of viscosity index improvers, 1-3 parts of an alkaline-earth metal clearing agent, 2-6 parts of a dispersing agent, 0.3-0.8 part of an antioxidant and 1-3 parts of a friction modifier. The full-synthetic continuously variable transmission transmission fluid has excellent comprehensive performance, has excellent viscosity index, oxidation stability, shear stability, wear resistance, low-temperature resistance and high transmission efficiency, and can simultaneously meet strict service requirements of various CVTs.

Description

technical field [0001] The invention belongs to the technical field of automobile transmission fluid, and particularly relates to a fully synthetic continuously variable transmission transmission fluid and a preparation method and application thereof. Background technique [0002] In recent years, compared with AT and MT, more and more automobiles use CVT which has more fuel economy, less exhaust emission, more comfortable ride and lower cost. However, the transmission oil plays a very important role in the performance of the CVT. If a special CVTF is used, the transmission efficiency can be increased from 45% to more than 97%, the ride is comfortable, the fuel can be saved by about 15%, and the exhaust emission can be reduced by about 10%. %. Compared with other transmission oils, CVT has more stringent requirements for transmission fluids, such as high viscosity index, high shear stability, good anti-wear properties, good low temperature fluidity, high anti-oxidative stab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10M167/00C10N30/02C10N30/06C10N40/04
Inventor 杜群贵李茂生
Owner SOUTH CHINA UNIV OF TECH
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