CN111117748A - Energy-saving long-life low-ash diesel engine oil composition - Google Patents
Energy-saving long-life low-ash diesel engine oil composition Download PDFInfo
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- 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
- C10M169/048—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution, non-macromolecular and macromolecular compounds
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- 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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/08—Inorganic acids or salts thereof
- C10M2201/084—Inorganic acids or salts thereof containing sulfur, selenium or tellurium
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- 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
- C10M2205/022—Ethene
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- 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
- C10M2205/04—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing aromatic monomers, e.g. styrene
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- 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
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/14—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/144—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings containing hydroxy groups
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- 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
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- 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
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
- C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
- C10M2219/086—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms containing sulfur atoms bound to carbon atoms of six-membered aromatic rings
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- Chemical & Material Sciences (AREA)
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- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
Abstract
The invention discloses an energy-saving long-life low-ash diesel engine oil composition, which comprises the following components in percentage by weight: 17 to 21.4 percent of composite additive; 4.5 to 12 percent of viscosity index improver; 0.2 to 0.5 percent of antioxidant; 0.3 to 0.5 percent of pour point depressant; base oil: the balance; wherein the composite additive contains salicylate. The product of the invention has lower ash content, excellent base number retentivity, high-temperature oxidation resistance and abrasion resistance while protecting the engine containing the DPF after-treatment device, can provide excellent protection for meeting the national VI emission engine, has longer service life and can effectively prolong the oil change period. In addition, the invention can provide excellent fuel economy performance on the premise of protecting the durability of the engine, and can help improve the comprehensive fuel economy of the heavy commercial vehicle.
Description
Technical Field
The invention relates to a diesel engine oil composition, in particular to an energy-saving long-life low-ash diesel engine oil composition.
Background
Energy conservation, environmental protection and prolonged oil change period have become three major driving forces for promoting the regeneration of internal combustion engine oil. With the increasing emphasis on environmental issues in various countries, stricter exhaust emission standards have been developed in succession. Emission limits and emission standards of pollutants for heavy-duty diesel vehicles (sixth stage of China) are officially issued in 2018, 6 and 22 months, and are officially implemented with 2019, 7 and 1 months. In order to meet the requirements of the national emission standards of six, OEM manufacturers are continuously raising engines, such as adopting Exhaust Gas Recirculation (EGR), common rail, and the like, and simultaneously matching with exhaust gas after-treatment technologies such as Selective Catalytic Reduction (SCR), particulate filter (DPF), and the like to reduce exhaust gas emissions, wherein DPF is the after-treatment technology that heavy commercial vehicles must adopt to meet the national emission standards of VI. The DPF is mainly used to capture Particulate Matter (PM) in exhaust emissions, which is mainly solid carbon black, sulfated ash, and partially incompletely combusted fuel or engine oil. The blockages caused by sulfated ash are non-renewable, and the main sources are sulfur in the fuel and additive components (sulfur, calcium, and phosphorus) in the lubricant. Therefore, medium and low ash diesel engine oils (sulfated ash no greater than 1.0%) are a necessary trend to meet national VI emission regulations for diesel engines.
Meanwhile, OEM manufacturers upgrade through engine technologies and provide engine oil matched with the engine technologies in a long oil change period to improve product competitiveness, improve influence of products on users and the industry and achieve improvement of sales volume of the whole automobile. As is known, diesel engine oil matched with engines of large main engine plants in China is released in a long oil change period, and the oil change mileage is 60000-120000 kilometers. The release of the engine oil in the long oil change period not only reduces the generation amount of the waste engine oil and the brought treatment cost to a certain extent, accords with the advanced energy-saving and environment-friendly idea, but also reduces the oil change frequency of the vehicle, and brings the promotion of comprehensive economic benefits for terminal users. According to the knowledge of the penmen, the diesel engine oil with long oil change period released in the current domestic market is the engine discharged by China IV and China V, the post-treatment system of the engine is not provided with DPF, the specification of the oil product is mainly API CI-4, CI-4+ or ACEA E4/E7, the sulfated ash content of the product is high and is 1.2% -1.9%, therefore, the oil product can not meet the lubricating requirement of the engine with DPF after-treatment in the future, and the durability and the service life of the post-treatment device can be reduced. On the other hand, in the aspect of fuel consumption of heavy commercial vehicles, GB30510-2018 limit on fuel consumption of heavy commercial vehicles is also formally published in 2018 in 2 and 6 months, and the standard takes 'the limit on fuel consumption is increased by about 15% on the basis of 2015 in 2020' as an overall energy-saving target. And the most economical and easily achieved way for improving the fuel economy of heavy-duty vehicles is through the reduction of the viscosity of lubricating oil and the optimization of the formula. Currently, the OEM manufacturers abroad start to use low-viscosity diesel engine oil such as 5W-30 on heavy commercial vehicle engines, and the latest specification API FA-4 of the diesel engine oil also provides reference for energy-saving low-viscosity diesel engine oil.
In summary, as the VI emission regulations of the heavy-duty commercial vehicles become stricter and the consumption limit of fuel economy becomes stricter, and the requirement of long oil change period is satisfied, the challenge for diesel engine oil is higher, and the diesel engine oil needs to be effectively balanced to satisfy the relationship of emission, durability, energy conservation and long service life. Although patents CN107892978A and CN105542922B both disclose an energy-saving diesel engine oil with long oil change mileage and a preparation method thereof, the viscosity grade is 15W-40, and the oil is developed based on national V emission engines, and the oil has higher sulfated ash content and cannot meet the engine lubrication requirements of the latest national VI emission regulations.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a low-ash long-life energy-saving diesel engine oil composition which has excellent base number retention, high-temperature oxidation resistance and abrasion resistance, lower ash content and longer service life while protecting an engine containing a DPF after-treatment device.
The technical scheme is as follows: the invention relates to an energy-saving long-life low-ash diesel engine oil composition, which comprises the following raw materials in percentage by weight: compound additive: 17% -21.4%; viscosity index improver: 4.5% -12%; antioxidant: 0.2 to 0.5 percent; pour point depressant: 0.3 to 0.5 percent; base oil: the balance; wherein the composite additive contains salicylate.
Preferably, the base oil comprises hydroisomerization III base oil and synthetic ester base oil, and the addition amount of the synthetic ester base oil is 8-20%.
Preferably, the composite additive comprises infinium D3336 or infinium D3504L.
Preferably, the viscosity index improver is a hydrogenated styrene diene copolymer, and the shear stability index of the viscosity index improver is less than or equal to 10.
Preferably, the viscosity index improver comprises SV163, SV201 or SV 203.
Preferably, the hydroisomerized group III base oil comprises 100N, 150N or 250N; the synthetic ester base oil is KETJENLUBE16 or Priolube 3970.
Preferably, the total base number of the composite additive is 60-70 mg KOH/g, and the sulfated ash content is 4.6-6.5%.
Preferably, the pour point depressant comprises polymethyl methacrylate.
Preferably, the antioxidant is a thioether phenol type antioxidant.
Preferably, the viscosity grade of the engine oil is 10W-40, 10W-30 or 5W-30, and the sulfated ash content of the oil is less than or equal to 1.0%.
Has the advantages that: compared with the prior art, the invention can obtain the following beneficial effects: 1. the oil product of the invention adopts a unique salicylate additive technology, provides higher base number (the base number is more than or equal to 12), oxidation resistance and corrosion and rust resistance on the premise of lower ash content, has excellent base number retention capacity, and prolongs the oil change period of the oil product on the premise of ensuring that the oil product meets the lubricating requirements of national VI emission engines and the compatibility with a post-treatment system. 2. The base oil is a mixture of III-type oil and synthetic ester base oil, the viscosity index improver adopts hydrogenated styrene-isoprene with a shear stability index of less than or equal to 10, the synthetic ester base oil can improve the stability of a salicylate additive and avoid the precipitation of the additive due to long-time storage, and the high-shear stability viscosity ensures that an oil product has a longer oil change period. 3. The invention breaks through the viscosity grade limitation of 15W-40 or even 20W-50 when the traditional engine oil is used, provides the low-viscosity diesel engine oil 5W-30/10W-30, and uses the hydrogenated styrene diene copolymer adhesive with the ultrahigh shear stability index in a matching way, thereby not only ensuring that the oil has better low-temperature performance and fuel economy performance, but also ensuring that the anti-shear stability is outstanding, ensuring that the viscosity of the oil is basically kept unchanged in the using process, and ensuring that good durability protection is provided for the engine. 4. Compared with the traditional CJ-410W-40, the product provided by the invention has good fuel economy in an OM501LA FE rack, and can improve the fuel lifting effect by 0.2-1.0%.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments.
The starting materials used in the following examples are all commercially available unless otherwise specified.
The composite additives Infineum D3336 and Infineum D3504L are from Union of Runki, Inc.; the viscosity index improvers SV163, SV201 and SV203 are from Union of Runko; pour point depressants Viscoplex 1-300, Viscoplex1-180 were from Windonggaseit, Germany. The thioether phenol type antioxidants L115 and L118 are from Heshi wall chemical company.
Example 1
10W-40 of long-life low-ash diesel engine oil which is prepared by blending the following components in percentage by mass:
group III base oil 100N: 22.8 percent
Group III base oil 250N: 29.2 percent
20 percent of synthetic ester Prolube 3970
Finger adhesive SV 203: 6.0 percent
Diesel engine oil complexing agent D3336: 21.4 percent
Thioether phenol type antioxidant L115: 0.3 percent of
Polymethyl methacrylate V1-300: 0.3 percent of
Example 2
5W-30 parts of long-life low-ash diesel engine oil which is prepared by blending the following components in percentage by mass:
group III base oil 100N: 53.7 percent;
group III base oil 150N: 4 percent;
synthetic ester KETJENLUBE16: 8%
Finger adhesive SV 163: 12 percent of
Engine compound agent D3336: 21.4 percent
Thioether phenol type antioxidant L115: 0.5 percent
Polymethyl methacrylate V1-300: 0.4 percent
Example 3
10W-30 parts of long-life low-ash diesel engine oil which is prepared by blending the following components in percentage by mass:
group III base oil 150N: 63%;
synthesis of ester Priolube 3970: 15 percent of
Finger adhesive SV 201: 4.5 percent
Engine complexing agent infinemum D3504L: 17 percent of
Thioether phenol type antioxidant L118: 0.2 percent of
Polymethyl methacrylate V1-180: 0.3 percent of
Comparative example 1
The basic procedure was as in example 1, except that the synthetic ester of this example was added in an amount of < 8%. Group III base oil 100N: 37.8 percent
Group III base oil 250N: 29.2 percent
Synthetic ester Prolube 3970: 5%
Diesel engine oil complexing agent D3336: 21.4 percent
Thioether phenol type antioxidant L115: 0.3 percent of
Finger adhesive SV 203: 6.0 percent
Polymethyl methacrylate V1-300: 0.3 percent of
Comparative example 2
The basic procedure was the same as in example 1, except that the synthetic ester of this example was added in an amount of > 20%. Group III base oil 100N: 17.8 percent
Group III base oil 250N: 29.2 percent
Synthetic ester Prolube 3970: 25%
Diesel engine oil complexing agent D3336: 21.4 percent
Thioether phenol type antioxidant L115: 0.3 percent of
Finger adhesive SV 203: 6.0 percent
Polymethyl methacrylate V1-300: 0.3 percent of
Comparative example 3
The basic procedure was the same as in example 1, except that the adhesive used in this example had a shear stability index > 10.
Group III base oil 100N: 32.8 percent
Group III base oil 250N: 29.2 percent
10% of synthetic ester Prolube 3970
Diesel engine oil complexing agent D3336: 21.4 percent
Thioether phenol type antioxidant L115: 0.3 percent of
Finger adhesive SV 261: 6.0 percent
Polymethyl methacrylate V1-300: 0.3 percent of
Comparative example 4
The basic procedure was the same as in example 1, except that the additive package used in this example did not contain salicylate.
Group III base oil 100N: 15.0 percent
Group III base oil 250N: 51.9 percent
10% of synthetic ester Prolube 3970
Diesel engine oil complexing agent D3314: 17 percent of
Thioether phenol type antioxidant L115: 0.3 percent of
Finger adhesive SV 203: 5.5 percent
Polymethyl methacrylate V1-300: 0.3 percent of
TABLE 1 Performance index data for the oils of the examples
As can be seen from the data in the table 1, the product of the invention has lower ash content, the sulfated ash content is not more than 1.0%, the product has excellent base number retention, high-temperature oxidation resistance, shear stability and wear resistance while protecting the engine containing the DPF after-treatment device, can provide excellent protection for meeting the national VI emission engine, has longer service life, and can meet the requirement of the oil change period of the engine of 80000-120000 km. In addition, compared with CJ-410W-40 oil products, the fuel economy performance can be improved by 0.21-1.0%, and the comprehensive fuel economy of the heavy commercial vehicle can be improved.
Comparative examples 1 and 2 show that the content of the synthetic ester base oil is less than 8% and the content of the synthetic ester base oil is more than 20%, respectively, and it can be seen from the data in table 1 that when the content of the synthetic ester base oil is less than 8%, the additive amount of the composite additive is high, the polarity of the type III base oil is poor, the additive solubility is poor, and the additive is easy to separate out after long-term storage, which affects the product performance; and when the content of the synthetic ester base oil is more than 20%, the compatibility of the finished oil to rubber is poor, and the swelling property to nitrile rubber is obvious. According to the API standard requirement, the volume change rate of the lubricating oil to the silicon rubber, the fluororubber and the nitrile rubber is as follows in sequence: -5 to 40, -2 to 3 and-5 to 10. When the content of the synthetic ester exceeds 20%, the volume change rate of the nitrile rubber can exceed the standard.
The comparative example 3 is a hydrogenated styrene-isoprene sticking agent with a shear stability index of 25, and as can be seen from the data in table 1, the oil blended by the sticking agent has poor shear stability, the kinematic viscosity change rate at 100 ℃ after 90 times of diesel nozzle shearing reaches 12.12%, and the viscosity of the oil is reduced too fast under the action of long-time shearing in the use process, so that the abnormal wear of an engine is caused, and the long-life use requirement of 80000km cannot be met.
Comparative example 4 is that the complex additive does not contain salicylate, and as can be seen from the data in table 1, although the base number of the oil can reach the level of using the salicylate-containing complex additive, the sulfated ash content of the oil is higher, exceeding 1.0%, which cannot meet the engine lubrication use requirement of the DPF-containing after-treatment device, and long-term use can cause blockage of the DPF after-treatment system, increase of exhaust back pressure and influence on engine power.
Claims (10)
1. An energy-saving long-life low-ash diesel engine oil composition is characterized by comprising the following raw materials in percentage by weight: 17 to 21.4 percent of composite additive; 4.5 to 12 percent of viscosity index improver; 0.2 to 0.5 percent of antioxidant; 0.3 to 0.5 percent of pour point depressant; base oil: the balance; wherein the composite additive contains salicylate.
2. The energy-saving long-life low-ash diesel engine oil composition according to claim 1, wherein the base oil comprises a hydroisomerized group III base oil and a synthetic ester base oil, and the synthetic ester base oil is added in an amount of 8 to 20% of the total amount of the base oil.
3. The energy efficient long life low ash diesel engine oil composition of claim 1, wherein the complex additive comprises infinium D3336 or infinium D3504L.
4. The energy efficient long life low ash diesel engine oil composition of claim 1 wherein the viscosity index improver is a hydrogenated styrene diene copolymer and the viscosity index improver has a shear stability index of 10 or less.
5. The energy efficient long life low ash diesel engine oil composition of claim 1, wherein the viscosity index improver comprises SV163, SV201, or SV 203.
6. The energy efficient long life low ash diesel engine oil composition of claim 2, wherein the hydroisomerized group III base oil comprises 100N, 150N, or 250N; the synthetic ester base oil is KETJENLUBE16 or Priolube 3970.
7. The energy-saving long-life low-ash diesel engine oil composition as claimed in claim 1, wherein the total base number of the composite additive is 60-70 mg KOH/g, and the sulfated ash content is 4.6-6.5%.
8. The energy efficient long life low ash diesel engine oil composition of claim 1, wherein said pour point depressant comprises polymethyl methacrylate.
9. The energy efficient long life low ash diesel engine oil composition of claim 1, wherein said antioxidant is a thioether phenol type antioxidant.
10. The energy efficient long life low ash diesel engine oil composition of claim 1, wherein said engine oil viscosity grade is 10W-40, 10W-30, or 5W-30, and said oil has a sulfated ash content of 1.0% or less.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114350425A (en) * | 2021-02-25 | 2022-04-15 | 赫因道夫润滑科技(上海)有限公司 | Long-life diesel engine oil for generator set and preparation method thereof |
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| US20090163393A1 (en) * | 2007-12-21 | 2009-06-25 | Boffa Alexander B | Lubricating oil compositions for internal combustion engines |
| CN106398831A (en) * | 2016-08-31 | 2017-02-15 | 龙蟠润滑新材料（天津）有限公司 | Anti-wear energy-saving type diesel engine oil composition |
| CN109135889A (en) * | 2018-08-14 | 2019-01-04 | 青岛冠军石油化学有限公司 | A kind of efficient peace and quiet h type engine h oil of ester-contaning compounds and preparation method thereof |
| CN109321337A (en) * | 2018-11-01 | 2019-02-12 | 江苏龙蟠科技股份有限公司 | A kind of engine oil composition and preparation method with low-friction coefficient |
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2020
- 2020-01-13 CN CN202010035158.8A patent/CN111117748B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090163393A1 (en) * | 2007-12-21 | 2009-06-25 | Boffa Alexander B | Lubricating oil compositions for internal combustion engines |
| CN106398831A (en) * | 2016-08-31 | 2017-02-15 | 龙蟠润滑新材料（天津）有限公司 | Anti-wear energy-saving type diesel engine oil composition |
| CN109135889A (en) * | 2018-08-14 | 2019-01-04 | 青岛冠军石油化学有限公司 | A kind of efficient peace and quiet h type engine h oil of ester-contaning compounds and preparation method thereof |
| CN109321337A (en) * | 2018-11-01 | 2019-02-12 | 江苏龙蟠科技股份有限公司 | A kind of engine oil composition and preparation method with low-friction coefficient |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114350425A (en) * | 2021-02-25 | 2022-04-15 | 赫因道夫润滑科技(上海)有限公司 | Long-life diesel engine oil for generator set and preparation method thereof |
| CN114350425B (en) * | 2021-02-25 | 2023-08-15 | 赫因道夫润滑科技(上海)有限公司 | Diesel engine oil of long-life generator set and preparation method thereof |
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