CN114806681A - Lubricating oil composition for special hybrid transmission of passenger car - Google Patents
Lubricating oil composition for special hybrid transmission of passenger car Download PDFInfo
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- CN114806681A CN114806681A CN202210287390.XA CN202210287390A CN114806681A CN 114806681 A CN114806681 A CN 114806681A CN 202210287390 A CN202210287390 A CN 202210287390A CN 114806681 A CN114806681 A CN 114806681A
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- lubricating oil
- hybrid transmission
- oil composition
- passenger car
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 47
- 239000010687 lubricating oil Substances 0.000 title claims abstract description 27
- 239000000203 mixture Substances 0.000 title claims abstract description 24
- 239000002199 base oil Substances 0.000 claims abstract description 21
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 8
- 239000002131 composite material Substances 0.000 claims abstract description 8
- 239000000654 additive Substances 0.000 claims abstract description 7
- 230000000996 additive effect Effects 0.000 claims abstract description 7
- 230000000994 depressogenic effect Effects 0.000 claims abstract description 7
- 239000003921 oil Substances 0.000 claims description 24
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 10
- 229920013639 polyalphaolefin Polymers 0.000 claims description 8
- 230000007797 corrosion Effects 0.000 claims description 6
- 238000005260 corrosion Methods 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 229920000193 polymethacrylate Polymers 0.000 claims description 5
- 101100407030 Arabidopsis thaliana PAO2 gene Proteins 0.000 claims description 3
- 239000003963 antioxidant agent Substances 0.000 claims description 2
- 230000003078 antioxidant effect Effects 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 239000003599 detergent Substances 0.000 claims description 2
- 239000002270 dispersing agent Substances 0.000 claims description 2
- 239000013538 functional additive Substances 0.000 claims description 2
- 239000002736 nonionic surfactant Substances 0.000 claims description 2
- 238000012360 testing method Methods 0.000 claims description 2
- 239000006260 foam Substances 0.000 abstract description 7
- 230000001050 lubricating effect Effects 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- 239000010718 automatic transmission oil Substances 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000008139 complexing agent Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 102100034701 Cilia- and flagella-associated protein 20 Human genes 0.000 description 1
- 101000946179 Homo sapiens Cilia- and flagella-associated protein 20 Proteins 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/1006—Petroleum or coal fractions, e.g. tars, solvents, bitumen used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/0206—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
- C10M2209/084—Acrylate; Methacrylate
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/02—Pour-point; Viscosity index
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/08—Resistance to extreme temperature
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
- C10N2040/042—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for automatic transmissions
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
Abstract
The invention discloses a high-viscosity-index lubricating oil composition for a special hybrid transmission of a passenger vehicle, which comprises the following components in percentage by weight: 79.57-81.65% of base oil, 7.5-10% of viscosity index improver, 10.2-10.5% of composite additive, 0.2-0.3% of pour point depressant and defoaming agent: 0.03 to 0.05 percent. The lubricating oil composition has low viscosity, high viscosity index, excellent low-temperature fluidity, thermal oxidation stability, friction property and electrochemical property, small high-temperature foam, excellent wear resistance protection for gears and bearings, torque loss reduction and power transmission improvement, and is particularly suitable for lubricating a special hybrid transmission of a passenger car.
Description
Technical Field
The invention relates to a lubricating oil composition for a passenger car, in particular to a lubricating oil composition for a special hybrid transmission of the passenger car.
Background
In recent years, new energy electric vehicles have been rapidly developed. New energy electric vehicles are classified into pure electric vehicles (BEV), Hybrid Electric Vehicles (HEV), plug-in hybrid electric vehicles (PHEV), extended-range electric vehicles (REEV), and fuel cell vehicles (FCEV). The Hybrid Electric Vehicle (HEV) is a new energy vehicle which is closest to the traditional vehicle, integrates the advantages of an internal combustion engine and a motor, is a technical scheme which can solve the problems of energy conservation and emission reduction in a short term at present and is easy to realize, and will become the mainstream of the market for a long time in the future. Compared with the traditional internal combustion engine automobile, the Hybrid Electric Vehicle (HEV) has lower noise and vibration level and has higher comfort degree than the traditional internal combustion engine automobile. The generator is used as basic power, the motor is used as assistance, oil consumption can be reduced, partial energy is recycled, energy transfer efficiency is improved, and emission is reduced.
The hybrid transmission is used as a power core of a hybrid automobile, and can influence the cost, energy consumption and emission of the hybrid passenger car to a great extent. The hybrid transmission is divided into an Add-on transmission (i.e., a P-type hybrid transmission) modified based on a conventional automatic transmission and a hybrid dedicated transmission DHT integrated with an electric machine based on a conventional automatic transmission. Among other things, the hybrid-dedicated transmission DHT will be the future development direction of hybrid transmissions. Compared with the traditional gearbox, the driving motor is added in the electric vehicle driving system of the hybrid electric vehicle, so that higher requirements on oil products are provided. For better heat dissipation, it is desirable that the oil possess a lower viscosity; in order to ensure the safety of the motor, the oil product needs more excellent insulating property and electrochemical property; in order to ensure the sealing performance of the oil product and the parts of the motor and the transmission, the oil product is required to have excellent material compatibility.
Most of lubricating oil for the hybrid transmission on the market at present adopts traditional automatic transmission oil, and the lubricating oil cannot meet the lubricating requirements of the hybrid transmission in the aspects of low-temperature performance, copper sheet corrosion, electrochemical performance and the like, and the formula composition and performance of the special oil for the hybrid transmission, which is disclosed in patent CN109705959A, are similar to those of the special oil for the transmission automatic transmission, so that the special oil for the hybrid transmission has no obvious advantages.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a lubricating oil composition for a special hybrid transmission of a passenger car, which has high viscosity index, excellent low-temperature fluidity, thermal oxidation stability, friction characteristic, electrochemical characteristic and small high-temperature foam, and provides reliable lubrication protection for the special hybrid transmission of the passenger car.
The technical scheme is as follows: the lubricating oil composition for the special hybrid transmission of the passenger car comprises the following components in percentage by weight: 79.57-81.65% of base oil, 7.5-10% of viscosity index improver, 10.2-10.5% of composite additive, 0.2-0.3% of pour point depressant and defoaming agent: 0.03-0.05%.
Preferably, the Base oils are hydrogenated Base oil and polyalphaolefin Base oil, the hydrogenated Base oil is Base oil 3CST, and the polyalphaolefin Base oil is PAO2 and PAO 3.5.
Preferably, the viscosity index improver is a polymethacrylate adhesive, and the polymethacrylate adhesive is Viscoplex 7-200 or Viscoplex 7-310.
Preferably, the composite additive is one or more of a plurality of functional additives including a detergent dispersant, an extreme pressure antiwear agent, an antioxidant and an anti-foaming agent.
Preferably, the composite additive is LP 21788 or LP 4318.
Preferably, the defoaming agent is a special nonionic surfactant synthetic AC AMH 2.
Preferably, the pour point depressant is Viscoplex 1-300 or Viscoplex 1-254.
Preferably, the viscosity of the lubricating oil composition for the special hybrid transmission of the passenger car is 4.0-5.5mm 2 The viscosity index is not lower than 250, and the copper content in the oil is not more than 50ppm after the oil is subjected to a copper sheet corrosion test for 168 hours at 150 ℃.
Has the advantages that: compared with the prior art, the invention has the following remarkable advantages: (1) the invention has high viscosity index and excellent low-temperature fluidity, and the invention selects special base oil and polymethacrylate adhesive, the viscosity index is higher than 250, the viscosity is 4.0-5.5mm 2 The Brookfield viscosity at minus 40 ℃ is below 2000mPa.s, which is far lower than that of the traditional automatic transmission oil, and the transmission efficiency and the power transmission of the transmission are improved; (2) the oil product has excellent electrochemical properties, and the oil product has excellent synchronizer properties and friction properties and excellent copper corrosion by using the multifunctional special composite additiveThe oil has protectiveness and electrochemical characteristics, the copper content of the oil is lower than 50ppm after the oil passes through the temperature of 150 ℃ for 168 hours, the volume resistivity can reach 142 MOmega.m at the temperature of 30 ℃, the breakdown voltage can reach 50KV, and reliable protection is provided for the safe operation of the hybrid transmission; (3) the high-temperature foam resistance is excellent, the 150 ℃ high-temperature foam of the existing automatic transmission oil is mostly 80-100 mL/mL, and the 150 ℃ high-temperature foam of the product is not more than 50/0mL/mL, so that the high-temperature foam resistance is excellent, the integrity of a lubricating oil film of an oil product at high temperature is ensured, and the reliable lubrication protection is improved for transmission parts.
Detailed Description
The technical solution of the present invention is further illustrated by the following examples.
Example 1
The lubricating oil composition for the special hybrid transmission of the passenger vehicle in the embodiment is prepared by blending the following components in percentage by weight:
example 2
The lubricating oil composition for the special hybrid transmission of the passenger vehicle in the embodiment is prepared by blending the following components in percentage by weight:
| components | The weight percentage content |
| Hydrogenated base oil GTL3 | 40.65％ |
| Poly alpha olefin base oil PAO2 | 12％ |
| Poly alpha olefin base oil PAO3.5 | 29％ |
| Viscoplex 7-310 | 7.5％ |
| Complexing agent LP4318 | 10.5％ |
| Defoaming agent synthetic AC AMH2 | 0.05％ |
| Pour point depressant Viscoplex 1-300 | 0.3％ |
Comparative example
The comparative example is a formula of traditional automatic transmission oil and is prepared by blending the following components in percentage by weight:
| components | The weight percentage content |
| Hydrogenated base oil Yubase 3 | 40％ |
| III hydrogenated base oil 100N | 44.7％ |
| Viscoplex 12-095 | 5％ |
| Complexing agent infinemum T4311 | 10％ |
| Pour point depressant Viscoplex 1-300 | 0.3％ |
The main performance indexes of the products of the above examples are shown in Table 1.
TABLE 1 Performance index data for the oils of the examples
As can be seen from the comparative evaluation data in Table 1 above, the lubricating oil compositions for a hybrid transmission obtained in examples 1 and 2 have higher viscosity index and lower temperature fluidity than the conventional automatic transmission oil, the viscosity index is higher than 250, and the Brookfield viscosity at-40 ℃ is below 2000mPa.s, which is much lower than that of the conventional automatic transmission oil. From the results of 150 ℃ and 168h copper corrosion experiments, the copper element content of the oil product after 150 ℃ and 168h is lower than 50ppm, the 150 ℃ high-temperature foam is smaller, the oil product is obviously superior to the related performance of the traditional automatic transmission oil, the corrosion of copper-containing parts of a hybrid transmission can be effectively avoided, and a complete and reliable lubricating oil film and lubricating protection are provided for bearings and gears under a high-temperature working condition. In addition, the oil product of the invention also has higher volume resistivity and breakdown voltage, which shows that the oil product has more excellent electrochemical characteristics and can ensure the safe operation of the hybrid transmission.
Claims (10)
1. A lubricating oil composition for a hybrid transmission for passenger cars, characterized in that: comprises the following components in percentage by weight: 79.57-81.65% of base oil, 7.5-10% of viscosity index improver, 10.2-10.5% of composite additive, 0.2-0.3% of pour point depressant and defoaming agent: 0.03 to 0.05 percent.
2. The lubricating oil composition for a passenger car hybrid transmission according to claim 1, characterized in that: the base oil is hydrogenated base oil and poly alpha-olefin base oil.
3. The lubricating oil composition for a hybrid transmission for passenger cars according to claim 2, characterized in that: the hydrogenated Base oil was Base oil 3CST and the polyalphaolefin Base oils were PAO2 and PAO 3.5.
4. The lubricating oil composition for a passenger car hybrid transmission according to claim 1, characterized in that: the viscosity index improver is a polymethacrylate adhesive.
5. The lubricating oil composition for a passenger car hybrid transmission according to claim 4, wherein: the polymethacrylate adhesive is Viscoplex 7-200 or Viscoplex 7-310.
6. The lubricating oil composition for a passenger car hybrid transmission according to claim 1, characterized in that: the composite additive is one or more of a plurality of functional additives including a detergent dispersant, an extreme pressure antiwear agent, an antioxidant and an anti-foaming agent.
7. The lubricating oil composition for a passenger car hybrid transmission according to claim 6, wherein: the composite additive is LP 21788 or LP 4318.
8. The lubricating oil composition for a passenger car hybrid transmission according to claim 1, characterized in that: the defoaming agent is a special nonionic surfactant synthetic AC AMH 2.
9. The lubricating oil composition for a passenger car hybrid transmission according to claim 1, characterized in that: the pour point depressant is Viscoplex 1-300 or Viscoplex 1-254.
10. The lubricating oil composition for a passenger car hybrid transmission according to claim 1, characterized in that: the viscosity of the lubricating oil composition for the special hybrid transmission of the passenger car is 4.0-5.5mm 2 The viscosity index is not lower than 250, and the copper content in the oil is not more than 50ppm after the oil is subjected to a copper sheet corrosion test for 168 hours at 150 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210287390.XA CN114806681A (en) | 2022-03-23 | 2022-03-23 | Lubricating oil composition for special hybrid transmission of passenger car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210287390.XA CN114806681A (en) | 2022-03-23 | 2022-03-23 | Lubricating oil composition for special hybrid transmission of passenger car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114806681A true CN114806681A (en) | 2022-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210287390.XA Pending CN114806681A (en) | 2022-03-23 | 2022-03-23 | Lubricating oil composition for special hybrid transmission of passenger car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114806681A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009242547A (en) * | 2008-03-31 | 2009-10-22 | Nippon Oil Corp | Automotive transmission oil composition |
| WO2016152463A1 (en) * | 2015-03-20 | 2016-09-29 | 三洋化成工業株式会社 | Viscosity index improver, lubricant composition, and method for manufacturing lubricant composition |
| CN106967485A (en) * | 2017-03-31 | 2017-07-21 | 烟台德高石油有限公司 | Gear box oil and preparation method for the composition and preparation method of hybrid electric vehicle gearshift case oil and comprising said composition |
| CN107828480A (en) * | 2017-10-30 | 2018-03-23 | 江苏龙蟠科技股份有限公司 | A kind of high-performance synthesis type power-assisted steering fluid composition and preparation method thereof |
| CN111117747A (en) * | 2020-01-13 | 2020-05-08 | 龙蟠润滑新材料（天津）有限公司 | Lubricating oil composition for integrated electric drive assembly speed reducer |
| CN113930270A (en) * | 2021-09-24 | 2022-01-14 | 亚培烯科技（杭州）有限公司 | Lubricating oil composition for improving low-temperature fluidity and preparation method and application thereof |
-
2022
- 2022-03-23 CN CN202210287390.XA patent/CN114806681A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009242547A (en) * | 2008-03-31 | 2009-10-22 | Nippon Oil Corp | Automotive transmission oil composition |
| WO2016152463A1 (en) * | 2015-03-20 | 2016-09-29 | 三洋化成工業株式会社 | Viscosity index improver, lubricant composition, and method for manufacturing lubricant composition |
| CN106967485A (en) * | 2017-03-31 | 2017-07-21 | 烟台德高石油有限公司 | Gear box oil and preparation method for the composition and preparation method of hybrid electric vehicle gearshift case oil and comprising said composition |
| CN107828480A (en) * | 2017-10-30 | 2018-03-23 | 江苏龙蟠科技股份有限公司 | A kind of high-performance synthesis type power-assisted steering fluid composition and preparation method thereof |
| CN111117747A (en) * | 2020-01-13 | 2020-05-08 | 龙蟠润滑新材料（天津）有限公司 | Lubricating oil composition for integrated electric drive assembly speed reducer |
| CN113930270A (en) * | 2021-09-24 | 2022-01-14 | 亚培烯科技（杭州）有限公司 | Lubricating oil composition for improving low-temperature fluidity and preparation method and application thereof |
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Application publication date: 20220729 |