CN113201386A - Gasoline engine oil of SP grade and preparation method thereof - Google Patents
Gasoline engine oil of SP grade and preparation method thereof 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
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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
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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
- C10M2205/0206—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers used as base material
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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
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/024—Propene
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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
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/06—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing conjugated dienes
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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
- C10M2205/16—Paraffin waxes; Petrolatum, e.g. slack wax
- C10M2205/163—Paraffin waxes; Petrolatum, e.g. slack wax used as base material
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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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Abstract
The invention discloses an SP-grade gasoline engine oil and a preparation method thereof, belonging to the technical field of lubricating oil. The gasoline engine oil comprises the following raw materials in percentage by mass: compounding agent of gasoline and engine oil: 5% -12%; viscosity index improver: 4% -10%; pour point depressant: 0.1% -0.5%; base oil A: 10% -30%; base oil B: 50 to 80 percent. The preparation method comprises the following steps: and sequentially adding the pour point depressant, the viscosity index improver, the gasoline engine oil complexing agent, the base oil A and the base oil B into a blending kettle, uniformly mixing, stirring and filtering to obtain the SP-grade gasoline engine oil. By adopting the technical scheme of the invention, a product with better comprehensive performance can be obtained, the viscosity-temperature performance is higher, the low-temperature fluidity is more excellent, the fuel economy is better, the shearing resistance is better, the significance of very important progress is achieved, and better protection is provided for a novel engine which is adapted to national six regulations.
Description
Technical Field
The invention belongs to the technical field of lubricating oil, and particularly relates to SP-grade gasoline engine oil and a preparation method thereof.
Background
In order to meet the increasingly stringent environmental protection regulations and energy-saving requirements issued by the state and meet the emission standards of the state six, automobile manufacturers adopt the engine miniaturization, the direct injection technology, the turbocharging increasing technology, the friction reducing technology, the exhaust aftertreatment and combustion technology and the like to further improve the fuel economy of vehicles and meet the requirements of emission and the like. For passenger vehicles, according to the trend of a traditional power system, the conventional large displacement is gradually replaced by the conventional small displacement, 2.0 is gradually developed into 1.6L, 1.5L and 1.3L, and the turbocharging is comprehensively popularized from natural suction. These changes require higher quality oil to provide adequate hardware protection, prevent vehicle operation problems, and also improve fuel economy by using lower viscosity grades.
At present, the mainstream grade in the engine lubricating oil market is API SN and SN plus, and with the continuous development of the industry, SL and oil products with the grade below can be gradually replaced by products with higher grade. The SP specification gasoline engine oil is the API (American Petroleum institute) specification technical acceptance of API SP/GF-6 gasoline engine oil which is formally issued to the world on 1/5 of 2020. The specification is developed and completed in 10 years, and formally replaces the API SN/GF-5Plus specification to become the highest grade of gasoline engine oil in the global quality grade. After the API AP standard is brand new and upgraded, the lubricating oil is also provided with more severe requirements, and a new engine oil era is started.
Through search, the Chinese patent application numbers are: 202010070372.7, filing date: the invention is named as follows on 21 days 1 month in 2020: a coal-based fully-synthesized SN-grade lubricating oil and a preparation method thereof. The coal-based fully synthetic SN-grade lubricating oil comprises the following components in percentage by weight: 40-55 wt% of 1# coal-based base oil, 25-40 wt% of 2# coal-based base oil, 7-10 wt% of gasoline engine oil complexing agent, 0.3-0.8 wt% of pour point depressant, 6-10 wt% of viscosity index improver and 0.02 wt% of composite anti-foaming agent; the preparation method comprises the steps of compounding the complexing agent, blending the base oil and preparing the lubricating oil.
For another example, the chinese patent application No. is: 202010757613.5, filing date: the invention is named as follows in 7-31.2020: an oil-saving long-life type low-ash gasoline engine oil and a preparation method thereof. The gasoline engine oil in the application comprises the following raw materials in parts by weight: 45-70 parts of three types of base oil, 3-25 parts of synthetic hydrocarbon base oil, 4-12 parts of synthetic ester base oil, 7.9-9.3 parts of SP/GF6 complexing agent, 2-10 parts of composite adhesive, 0.1-0.5 part of pour point depressant and 0.1-1.5 parts of organic friction reducer. The lubricating oils obtained in the above two applications can improve fuel economy to some extent, but the overall performance thereof still needs to be further improved.
Disclosure of Invention
1. Problems to be solved
Aiming at the problem that the comprehensive performance of the SP-grade gasoline engine oil on the market needs to be further improved in all aspects, the invention provides the SP-grade gasoline engine oil and a preparation method thereof. By adopting the technical scheme of the invention, the problems can be effectively solved, and various performance indexes of the gasoline engine oil can meet the relevant standards of the gasoline engine oil with the SP specification, and the gasoline engine oil has higher fuel economy. Meanwhile, the preparation process is simple, the temperature is low, the energy consumption is low, and the industrialization is easy to realize.
2. Technical scheme
In order to solve the problems, the technical scheme adopted by the invention is as follows:
the invention relates to SP grade gasoline engine oil which comprises the following raw materials in percentage by mass: compounding agent of gasoline and engine oil: 5% -12%; viscosity index improver: 4% -10%; pour point depressant: 0.1% -0.5%; base oil A: 10% -30%; base oil B: 50 to 80 percent.
Further, the gasoline engine oil complexing agent adopts any one or more of Afton HiTEC11458, Lubrizol PV1410 or Lubrizol PV 1510.
Further, the viscosity index improver is any one of an ethylene propylene copolymer and a hydrogenated styrene diene copolymer.
Further, the viscosity index improver is preferably any one of chevrolet 8900E, luborun 7067C, or luyinglian SV 260.
Further, the pour point depressant is any one of polyalphaolefin or polymethacrylate.
Still further, the pour point depressant is preferably any one of Romanks 1-248, Romanks 1-300, or RIPP-T866.
Furthermore, the base oil A is selected from four types of base oil 100N or three types of base oil 100N; the base oil B is selected from four types of base oil 150N or three types of base oil 150N.
Further, the base oil a is preferably any one of PAO 164, 4CST, X420; the base oil B is preferably any one of PAO 166, 6CST, X430.
The preparation method of the SP specification gasoline engine oil comprises the following process steps: and sequentially adding the pour point depressant, the viscosity index improver, the gasoline engine oil complexing agent, the base oil A and the base oil B into a blending kettle according to the height sequence of the components, uniformly mixing, stirring and filtering to obtain the SP specification gasoline engine oil.
Furthermore, when the components are mixed, the temperature is raised, the temperature is controlled to be 45-65 ℃, and the stirring time is 1-2 h; heating and stirring until all the components are uniformly mixed, filtering while the components are hot, and cooling to room temperature.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the SP-grade gasoline engine oil, the components and the proportion thereof are optimally designed, particularly, the adding types of a gasoline engine oil complexing agent and base oil are optimized, and through the synergistic effect among the components, on one hand, the low-temperature valve abnormal sound can be effectively improved, the wear protection of a timing chain is enhanced, the wear and the chain elongation are reduced while the national six-emission standard is met, and the SP-grade gasoline engine oil has strong protection performance even under low viscosity; on the other hand, the low-speed pre-ignition (LSPI) phenomenon of the turbocharged engine can be effectively reduced, the knocking phenomenon is reduced, the service life of the engine is prolonged, the fuel economy performance is enhanced, and the strict requirement of the six national vehicles on the fuel economy is completely met. Meanwhile, the oil product of the invention can further improve the oxidation resistance and the cleaning performance of the existing gasoline engine oil, and can fully keep the cleanness of the piston, the valve and other parts in the engine when in use.
(2) The gasoline and engine oil compound agent of the SP grade is preferably one of Afton HiTEC11458, Lubrizol PV1410 or Lubrizol PV1510, and after being mixed with other components, the compound agent can effectively inhibit the occurrence of low-speed pre-ignition events, protect an engine timing chain system, control the generation of sediments to improve the piston detergency and improve the fuel economy, so that the performances of all aspects are excellent and balanced.
(3) According to the SP-grade gasoline engine oil, the specific selection and proportion of the viscosity index improver and the pour point depressant are optimized, the low-temperature fluidity of the obtained oil can be effectively improved after the viscosity index improver and the pour point depressant are added, and the SP-grade gasoline engine oil has good viscosity performance and viscosity retention performance, has very important progressive significance compared with some SP-grade gasoline engine oils sold on the market, and greatly improves the comprehensive performance indexes of the SP-grade gasoline engine oil.
(4) According to the SP-grade gasoline engine oil, the base oil is added in proportion and optimized, the base oil A and the base oil B are respectively blended by adopting three types or four types of base oil with two different types for use, compared with the traditional synthesized lubricating oil, the low-temperature performance and the additive sensitivity of the obtained product can be effectively further improved, and the base oil is added into a system to enable the obtained oil to obtain excellent viscosity-temperature performance, oxidation resistance, lower evaporation loss and the like.
(5) According to the preparation method of the SP-grade gasoline engine oil, the preparation operation and process parameters are optimized, and particularly, the temperature and the stirring time of each component are accurately controlled, so that the added additives can be effectively and completely fused into the base oil, the synergistic effect can be exerted to the greatest extent, the excellent comprehensive performance of the obtained oil is ensured, and meanwhile, the preparation method is simple in process, low in temperature, low in energy consumption and easy to realize industrialization.
Drawings
FIG. 1 is a graph showing the results of performance tests of gasoline engine oil products obtained in example 1 and comparative example 1 of the present invention.
Detailed Description
With the continuous development of the industry, the demand for lubricating oil with higher quality is greater and greater, and most of the gasoline engine oil sold on the market at present only has excellent performance in one aspect or a plurality of aspects, and oil products with excellent comprehensive performance are difficult to obtain. The invention provides gasoline engine oil adapted to GB 18352.6-2016 (limit for emission of light automobile pollutants) and a measurement method (sixth stage in China), which is prepared from the following raw materials in percentage by mass: compounding agent of gasoline and engine oil: 5% -12%, viscosity index improver: 4% -10%, pour point depressant: 0.1% -0.5%, base oil A: 10% -30%, base oil B: 50 to 80 percent. By optimally designing the components and the proportion thereof, particularly optimizing the addition types of the gasoline engine oil complexing agent and the base oil, and by the synergistic effect among the components, on one hand, the low-temperature valve abnormal sound can be effectively improved, the wear protection of a timing chain is enhanced, the wear and the chain elongation are reduced while the national six-emission standard is met, and the high-temperature valve oil composition has strong protection performance even under low viscosity; on the other hand, the low-speed pre-ignition (LSPI) phenomenon of the turbocharged engine can be effectively reduced, the knocking phenomenon is reduced, the service life of the engine is prolonged, the fuel economy performance is enhanced, and the strict requirement of the six national vehicles on the fuel economy is completely met. Meanwhile, the oil product of the invention can further improve the oxidation resistance and the cleaning performance of the existing gasoline engine oil, and can fully keep the cleanness of the piston, the valve and other parts in the engine when in use.
Specifically, the gasoline engine oil complexing agent is an API SP grade gasoline engine oil complexing agent, and any one or more of Afton HiTEC11458, Lubrizol PV1410 and Lubrizol PV1510 can be preferably selected. The gasoline and engine oil complexing agent is added into an oil product, so that on one hand, the obtained oil product can effectively inhibit the occurrence of a low-speed pre-ignition event, protect a timing chain system of an engine, control the generation of sediments to improve the detergency of a piston, improve the fuel economy and ensure excellent and balanced performances in all aspects. On the other hand, the quality of the blended oil can meet the latest requirements of the specifications of OEM gasoline engine oil in Europe and America, and the blended oil has excellent oxidation resistance, abrasion resistance, high-temperature detergency and the like.
The viscosity index improver is any one of ethylene-propylene copolymer and hydrogenated styrene diene copolymer, and can be preferably any one of Chevrolet 8900E, Luborun 7067C or Runshui SV 260. The three viscosity index improvers are added into the oil product, so that the shearing property and the tackifying property of the oil product can be effectively improved, and the oil product has good viscosity-temperature performance and viscosity retention property.
The pour point depressant is any one of poly-alpha-olefin or polymethacrylate, preferably any one of Romanks 1-248, Romanks 1-300 or RIPP-T866, and can effectively reduce the pour point of the oil product and improve the low-temperature fluidity of the oil product by selecting the type and optimizing the proportion.
According to the oil product, the additive is dissolved in the base oil, the type of the base oil is optimized, and the base oil is blended for use, so that the comprehensive performance of the oil product is greatly improved compared with the traditional synthesized lubricating oil. Specifically, the base oil A is selected from four (or three) types of base oil 100N, also called industrial white oil and paraffin oil, and is a mixture of refined liquid hydrocarbons obtained from petroleum. Any one of PAO 164, 4CST and X420 can be preferably selected, and the oil product has good low-temperature performance, viscosity-temperature performance, oxidation resistance, low evaporation loss and the like through the combined action of the PAO 164, the 4CST and the X420 and other components. The base oil B is 150N of four (or three) types of base oil, is also a mixture of refined liquid hydrocarbons obtained from petroleum, and has higher viscosity than 100N of the four (or three) types of base oil. Any of PAO 166, 6CST, and X430 may be preferred, and the addition thereof can provide blended oil products with good low temperature performance and additive feel.
The invention also provides a preparation method of the SP grade gasoline engine oil, which comprises the following specific process operations: sequentially adding the pour point depressant, the viscosity index improver, the gasoline engine oil complexing agent, the base oil A and the base oil B into a blending kettle according to the height sequence of the components, heating to 45-65 ℃, heating and stirring for 1-2 hours until the components are uniformly mixed, filtering when the components are hot, and cooling to room temperature to obtain the SP-grade gasoline engine oil. The SP-grade gasoline engine oil disclosed by the invention is simple in preparation process, low in temperature, low in energy consumption and easy to realize industrialization. Meanwhile, the obtained oil product has the following characteristics: (1) improve the low-temperature valve abnormal sound. (2) The wear protection of the timing chain is enhanced, the wear and the chain elongation are reduced, and the timing chain has strong protection performance under low viscosity. (3) The low-speed pre-ignition (LSPI) phenomenon of the turbocharged engine is reduced, the knocking phenomenon is reduced, and the service life of the engine is prolonged. (4) The fuel economy performance is enhanced, and the strict requirements of the six vehicles in China on the fuel economy are met. (5) Improve the oxidation resistance and the cleaning performance, and keep the cleanness of the piston, the valve and other parts in the engine.
The invention is further described with reference to specific examples.
Example 1
The SP grade gasoline engine oil of the embodiment is composed of the following raw materials in percentage by mass: the gasoline and engine oil complexing agent adopts Lubrizol PV 1410: 7.9 percent; the viscosity index improver adopts RunYing combination SV 260: 8 percent; the pour point depressant is RIPP-T866: 0.3 percent; base oil a used PAO 164: 17.6 percent; the base oil B is selected from PAO 166: 66.2 percent.
The preparation method comprises the following steps: sequentially adding the components into a blending kettle according to the height sequence of the components, heating to 60 ℃, heating and stirring for 1.5 hours until the components are uniformly mixed and the appearance is clear, filtering while the components are hot, and cooling to room temperature to obtain the SP grade gasoline engine oil, and detecting the performance index of the obtained product, wherein the detection result is shown in figure 1.
Example 2
The SP grade gasoline engine oil of the embodiment is composed of the following raw materials in percentage by mass: the gasoline and engine oil complexing agent adopts Lubrizol PV 1410: 12 percent; the viscosity index improver adopts a Chevrolet 8900E: 7.5 percent; the pour point depressant is prepared from Romanks 1-248: 0.5 percent; the base oil A is selected from 4 CST: 30 percent; the base oil B is selected from PAO 166: 50 percent.
The preparation method comprises the following steps: and sequentially adding the components into a blending kettle according to the height sequence of the components, heating to 55 ℃, heating and stirring for 1.5 hours until the components are uniformly mixed and the appearance is clear, filtering while the components are hot, and cooling to room temperature to obtain the SP grade gasoline engine oil, wherein the performance index of the obtained product is detected, and the detection result is basically as in example 1.
Example 3
The SP grade gasoline engine oil of the embodiment is composed of the following raw materials in percentage by mass: the gasoline and engine oil complexing agent adopts Lubrizol PV 1510: 5 percent; the viscosity index improver adopts RunYing combination SV 260: 4.9 percent; the pour point depressant is prepared from 1 to 300 parts of Romanx: 0.1 percent; the base oil A is X420: 10 percent; the base oil B is selected from 6 CST: 80 percent.
The preparation method comprises the following steps: and sequentially adding the components into a blending kettle according to the height sequence of the components, heating to 45 ℃, heating and stirring for 1h until the components are uniformly mixed and the appearance is clear, filtering while the components are hot, and cooling to room temperature to obtain the SP grade gasoline engine oil, wherein the performance indexes of the obtained product are detected, and the detection result is basically as in example 1.
Example 4
The SP grade gasoline engine oil of the embodiment is composed of the following raw materials in percentage by mass: the gasoline and engine oil complexing agent adopts Afton HiTEC11458 and Lubrizol PV1410 (mixed in any ratio): 9 percent; the viscosity index improver adopts Luborun 7067C: 4 percent; the pour point depressant is RIPP-T866: 0.5 percent; the base oil A is X420: 20 percent; the base oil B is X430: 66.5 percent.
The preparation method comprises the following steps: and sequentially adding the components into a blending kettle according to the height sequence of the components, heating to 50 ℃, heating and stirring for 1h until the components are uniformly mixed and the appearance is clear, filtering while the components are hot, and cooling to room temperature to obtain the SP grade gasoline engine oil, wherein the performance indexes of the obtained product are detected, and the detection result is basically as in example 1.
Example 5
The SP grade gasoline engine oil of the embodiment is composed of the following raw materials in percentage by mass: the gasoline and engine oil complexing agent is Afton HiTEC11458, Lubrizol PV1410 and Lubrizol PV1510 (mixed in any ratio): 8 percent; the viscosity index improver adopts a Chevrolet 8900E: 10 percent; the pour point depressant is prepared from Romanks 1-248: 0.2 percent; the base oil A is X420: 25 percent; the base oil B is selected from 6 CST: 56.8 percent.
The preparation method comprises the following steps: and sequentially adding the components into a blending kettle according to the height sequence of the components, heating to 56 ℃, heating and stirring for 1h until the components are uniformly mixed and the appearance is clear, filtering while the components are hot, and cooling to room temperature to obtain the SP grade gasoline engine oil, wherein the performance indexes of the obtained product are detected, and the detection result is basically as in example 1.
Comparative example 1
The comparative example adopts the lubricating oil of Jiazhen brand, and concretely, the model number is SP 5W-30, and the lubricating oil is produced by Jiazhen Limited company. The performance index is detected, and the detection result is shown in fig. 1.
With reference to fig. 1, it is found through comparison that the results of performance tests of the SP-grade gasoline engine oil prepared in this embodiment 1 are greatly improved as a whole as compared with those of comparative example 1, and the SP-grade gasoline engine oil has a very important improvement meaning such as higher viscosity-temperature performance, more excellent low-temperature fluidity, better fuel economy, and better shear resistance, thereby providing better protection for a novel engine adapted to the national six regulations.
Claims (10)
1. The SP grade gasoline engine oil is characterized by comprising the following raw materials in percentage by mass: compounding agent of gasoline and engine oil: 5% -12%; viscosity index improver: 4% -10%; pour point depressant: 0.1% -0.5%; base oil A: 10% -30%; base oil B: 50 to 80 percent.
2. The SP grade gasoline engine oil of claim 1, wherein: the gasoline and engine oil complexing agent adopts any one or a combination of more of Afton HiTEC11458, Lubrizol PV1410 or Lubrizol PV 1510.
3. The SP grade gasoline engine oil of claim 1, wherein: the viscosity index improver is any one of ethylene-propylene copolymer and hydrogenated styrene-diene copolymer.
4. The SP grade gasoline engine oil of claim 3, wherein: the viscosity index improver is preferably any one of the Chevrolet 8900E, Luborun 7067C or Runfoin SV 260.
5. The SP grade gasoline engine oil of claim 1, wherein: the pour point depressant is any one of poly-alpha-olefin or polymethacrylate.
6. The SP grade gasoline engine oil of claim 5, wherein: the pour point depressant is preferably any one of Romanks 1-248, Romanks 1-300, or RIPP-T866.
7. An SP grade gasoline engine oil according to any one of claims 1-6, characterized in that: the base oil A is four types of base oil 100N or three types of base oil 100N; the base oil B is selected from four types of base oil 150N or three types of base oil 150N.
8. The SP grade gasoline engine oil of claim 7, wherein: the base oil A is preferably any one of PAO 164, 4CST and X420; the base oil B is preferably any one of PAO 166, 6CST, X430.
9. A method for preparing the SP grade gasoline engine oil according to any of claims 1-8, characterized by the process steps of: and sequentially adding the pour point depressant, the viscosity index improver, the gasoline engine oil complexing agent, the base oil A and the base oil B into a blending kettle according to the height sequence of the components, uniformly mixing, stirring and filtering to obtain the SP specification gasoline engine oil.
10. The method of claim 9 for preparing an SP grade gasoline engine oil, wherein: adding the components one by one from low to high, heating to 45-65 ℃, starting stirring when the temperature is raised to 30 ℃, stirring for 1-2 hours, uniformly mixing the components, filtering while hot, and finally cooling to room temperature.
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