CN107892978B - Long-life energy-saving diesel engine oil composition and preparation method thereof - Google Patents

Long-life energy-saving diesel engine oil composition and preparation method thereof Download PDF

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CN107892978B
CN107892978B CN201711131349.9A CN201711131349A CN107892978B CN 107892978 B CN107892978 B CN 107892978B CN 201711131349 A CN201711131349 A CN 201711131349A CN 107892978 B CN107892978 B CN 107892978B
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base oil
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engine oil
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CN107892978A (en
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冯心凭
朱弟文
邓翠花
朱鸿浩
李洪高
柯金元
梁亚媚
梁奇瑞
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Guangdong Nanyou Petrochemical Co ltd
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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
    • C10M169/047—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution and macromolecular compounds
    • 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
    • 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
    • C10M2203/102—Aliphatic fractions
    • C10M2203/1025—Aliphatic fractions 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
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/283—Esters of polyhydroxy compounds
    • C10M2207/2835—Esters of polyhydroxy compounds 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
    • 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
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties
    • C10N2020/02—Viscosity; 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
    • C10N2030/04—Detergent property or dispersant property
    • 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
    • C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
    • 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
    • C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
    • 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
    • C10N2030/54—Fuel economy
    • 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
    • C10N2030/72—Extended drain
    • 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
    • C10N2040/25—Internal-combustion engines
    • C10N2040/252—Diesel engines

Abstract

The invention relates to a long-life energy-saving diesel engine oil composition and a preparation method thereof, wherein the diesel engine oil composition is prepared by adding self-made 250N cutting fractions, preferably polyol ester TRS6810 and a mixture of Ketjenlube2700 and Ketjenlube3100 through the synergistic effect of the components, can meet the quality grade requirement of GB11122-2006 CI-415W40, has excellent cleaning and dispersing properties, high-temperature oxidation resistance and wear and friction resistance, can obviously reduce the friction coefficient of each friction part of a diesel engine under various different working conditions, improves the comprehensive fuel economy of a vehicle, has good fuel economy retaining capacity, ensures that an oil product has a lasting energy-saving and friction-reducing effect in the whole oil change period, effectively protects the durability of the engine, and obtains better technical effects.

Description

Long-life energy-saving diesel engine oil composition and preparation method thereof
Technical Field
The invention relates to the technical field of lubricating oil, in particular to a long-life energy-saving diesel engine oil composition and a preparation method thereof.
Background
Along with the development of the automobile industry, the comprehensive performance of a diesel engine is further improved, the performance of diesel engine oil is improved according to corresponding requirements, energy conservation and oil change period extension are driving forces for promoting the updating of the internal combustion engine oil, so that the diesel engine oil is required to have good high-temperature detergency, oxidation resistance and wear and friction resistance, a severe test is provided for the diesel engine oil, the diesel engine oil with higher specification is required to meet the lubricating requirements of the diesel engine, the energy consumption and tail gas emission are increased due to the sharp increase of the automobile holding capacity, the environmental pollution is quite remarkable, along with the implementation of the pollutant emission standard of motor vehicles in the fifth stage of China, the automotive lubricating oil in China meets new challenges, and the energy-saving development towards lower viscosity, more rigorous volatility requirements and better fuel economy is a remarkable development trend of the current engine oil.
Chinese patent CN201610009374.9 discloses an energy-saving diesel engine oil with an ultra-long oil change mileage and a preparation method thereof, wherein the composition comprises a diesel engine oil complexing agent, an antiwear agent, an antioxidant, a viscosity index improver, an anti-foaming agent and the balance of synthetic base oil. The composition has good wear resistance and friction reduction, oxidation stability and thermal stability, and can effectively prolong the oil change period; the sulfur-phosphorus-free antiwear agent is used for effectively improving the wear resistance and the friction reduction without accelerating the oxidation of oil products; the base oil is added with alkyl poly benzyl toluene, and the good compounding effect of the alkyl poly benzyl toluene and the antioxidant is utilized, so that the antioxidant performance of the oil product is improved, the service cycle of the oil product is greatly prolonged, and the purpose of overlength oil change is achieved.
60% of the effective energy generated by fuel combustion in the engine working is lost in the cylinder cooling and exhausting process, 40% is used as power, and 25% of the effective energy for providing power is lost in friction, so that the improvement of the engine oil performance and the reduction of the friction loss are effective ways for improving the fuel economy, and meanwhile, the service performance of the engine oil is required to be improved and the oil change period is prolonged for saving non-renewable petroleum resources.
Disclosure of Invention
The invention aims to disclose a long-life energy-saving diesel engine oil composition and a preparation method thereof, and the long-life energy-saving diesel engine oil composition can reduce friction loss, improve the service performance of engine oil and prolong the oil change period of the engine oil.
The technical scheme for realizing the long-life energy-saving diesel engine oil composition and the preparation method thereof is as follows:
the long-life energy-saving diesel engine oil composition comprises the following components in percentage by weight: base oil A: 2% -6%, base oil B: 33% -45%, base oil C: 35-45%, 8-18% of diesel engine oil complexing agent, friction modifier: 2-6% and pour point depressant: 0.05-0.5 percent of synthetic ester, wherein the base oil A is synthetic ester, the base oil B is prepared by cutting 250N of II base oil, the base oil C is one or a mixture of 500N of I base oil and 500N of II base oil, the diesel oil complexing agent is the diesel oil complexing agent with the American highest standard APICI-4 or above, the friction modifier is low-polarity and high-viscosity polymeric ester, and the pour point depressant is polymethacrylate.
Further, the base oil A is selected from polyol ester TRS6810, the polyol ester is compositely synthesized by polyol and saturated fatty acid ester, the saturated fatty acid ester is selected from one or a mixture of more of trihydroxymethyl propane ester, pentaerythritol oleate, trimellitate and neopentyl polyol ester, the polyol ester belongs to the V-type base oil in API classification, and the polyol ester has the characteristics of excellent thermal-oxygen stability, excellent solubility and cleanness, good lubricating performance, low volatility and the like, can effectively prevent carbon deposition and oil sludge generation, and promotes effective operation of an engine, so that the oil change period is prolonged.
Further, the base oil B is a bottom fraction product prepared by performing reduced pressure distillation cutting on 250N type II base oil through a molecular distillation technology, and the cutting process conditions are that the temperature is 200 ℃ and the pressure is 10-5MPa, the kinematic viscosity of the base oil B at 40 ℃ is controlled to be 50mm2/s～58mm2The viscosity index is more than 135, and the kinematic viscosity of the base oil B at 40 ℃ is controlled to be 53mm2/s～55mm2Compared with the conventional base oil, the base oil B has the advantages of excellent thermal oxidation stability and thermal stability, lower volatility, excellent viscosity-temperature property, good additive sensitivity and the like.
Further, the base oil C is II type base oil 500N with the viscosity index of more than 90, the II type base oil with the viscosity index of more than 90 is obtained by hydrogenation and catalytic cracking under certain pressure, and compared with the conventional base oil, the base oil C has the advantages of low sulfur, low nitrogen and low aromatic hydrocarbon content, excellent thermal oxidation stability, lower volatility, excellent viscosity-temperature property, good additive sensitivity and the like.
Further, the diesel engine oil composite agent is a mixture of a diesel engine oil composite agent HiTEC8799B and a multifunctional reinforcing agent HiTEC8757B of Afton company (Afton), the weight ratio of the HiTEC8799B to the multifunctional reinforcing agent HiTEC8757B is 3.5: 1-4.5: 1, the diesel engine oil composite agent is prepared by using high-quality detergents, dispersants, oxidation and corrosion inhibitors, ashless antioxidants, wear reducing agents and the like, and the piston carbon filling and cylinder wear of the engine can be remarkably improved by mixing the HiTEC8799B and the multifunctional reinforcing agent HiTEC8757B, and the diesel engine oil composite agent has excellent soot dispersion, oxidation resistance, corrosion resistance and wear resistance, and can effectively protect the engine and prolong the service life of the engine.
Further, the diesel engine oil complexing agent HiTEC8799B has the following parameters: the flash point is lowest 135, and the kinematic viscosity at 100 ℃ is 152mm2(s) a density of 0.956g/ml at 15 ℃ and a total base number of 66mgKOH/g, said multifunctional strengthening agent HiTEC8757B having the following parameters: the flash point is minimum 120 ℃, the kinematic viscosity at 100 ℃ is 12mm2(s), a density of 1.087g/ml at 15 ℃ and a total base number of 155 mgKOH/g.
Furthermore, the friction improver is a mixture of Ketjenlube2700 and Ketjenlube3100 of Italy Mantique chemical industry, Inc. (Italytich chemical S.P.A), the weight ratio of the Ketjenlube2700 to the Ketjenlube3100 is 0.3: 1-1: 1, the Ketjenlube2700 has very high viscosity, and the kinematic viscosity at 40 ℃ is as high as 11000mm2(ii)/s, viscosity index of 255, and the ester synthetic oil Ketjenlube2700 showed an unusual low-thickening effect at low temperatures when formulated,therefore, the friction modifier has the effects of a tackifier with stable shearing, the Ketjenlube3100 has excellent intermiscibility, and plays a role in solubilizing in a system of the Ketjenlube2700 and low-polarity mineral oil, and the Ketjenlube3100 has very excellent intermiscibility and can directly replace PAO100, so that the formula is simpler, the comprehensive cost is lower, more importantly, the performance can be improved well, especially, the friction and the lubricating performance are improved.
Further, the ester synthetic oil Ketjenlube2700 has the following parameters: kinematic viscosity at 40 ℃ of 11000mm2S, kinematic viscosity at 100 ℃ of 700mm2The viscosity index is 255, the density at 20 ℃ is 0.963g/ml, the flash point is 270 ℃, the pour point is-10 ℃, the acid value is 0.08mgKOH/g, and the Ketjenlube3100 for the ester synthetic oil has the following parameters: kinematic viscosity at 40 ℃ of 990mm2S, kinematic viscosity at 100 ℃ of 94mm2(ii)/s, viscosity index of 174, density of 0.930g/ml at 20 ℃, flash point of 260 ℃, pour point of-36 ℃ and acid value of 0.05 mgKOH/g.
Further, the pour point depressant is selected from polymethacrylates, preferably Viscoplex1-156, and improves the low-temperature fluidity of the oil product.
A preparation method of long-life energy-saving diesel oil comprises the following steps:
1) cutting 250N of II base oil, adding the cut fraction and one or two mixtures of 500N of I base oil and 500N of II base oil into a blending kettle, heating to 85 ℃, and stirring for 1 h;
2) adding synthetic ester, keeping the temperature at 60 ℃, adding the diesel engine oil complexing agent, continuously stirring for 0.5h, adding the friction modifier and the pour point depressant, continuously stirring for 3h, and cooling to room temperature to obtain the long-life energy-saving diesel engine oil composition.
The invention has the beneficial effects that: the composition of the invention can meet the quality grade requirement of GB11122-2006 CI-415W40, has excellent cleaning and dispersing properties, high-temperature oxidation resistance and wear and friction resistance, can obviously reduce the friction coefficient of each friction part of a diesel engine under various different working conditions, improves the comprehensive fuel economy of a vehicle, has good fuel economy retaining capacity, ensures that an oil product has a lasting energy-saving and friction-reducing effect in the whole oil change period, effectively protects the durability of the engine, and obtains better technical effects by the synergistic effect of the components, particularly by adding a self-made 250N cutting fraction, preferably a mixture of polyol ester TRS6810 and Ketjenlube2700 and Ketjenlube 3100.
Drawings
FIG. 1 is a graph showing the load characteristics of a long life energy saving diesel engine 1000r/min using a commercially available CI-415W40 diesel engine oil.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b): the long-life energy-saving diesel engine oil composition comprises the following components in percentage by weight: base oil A: 2% -6%, base oil B: 33% -45%, base oil C: 35-45%, 8-18% of diesel engine oil complexing agent, friction modifier: 2-6% and pour point depressant: 0.05-0.5 percent of synthetic ester, wherein the base oil A is synthetic ester, the base oil B is prepared by cutting 250N of II base oil, the base oil C is one or a mixture of 500N of I base oil and 500N of II base oil, the diesel oil complexing agent is the diesel oil complexing agent with the American highest standard APICI-4 or above, the friction modifier is low-polarity and high-viscosity polymeric ester, and the pour point depressant is polymethacrylate.
The base oil A is selected from polyol ester TRS6810, the polyol ester is compositely synthesized from polyol and saturated fatty acid ester, the saturated fatty acid ester is selected from one or a mixture of trihydroxy methyl propane ester, pentaerythritol oleate, trimellitate and neopentyl polyol ester, the polyol ester belongs to the V-th base oil in API classification, and the polyol ester has the characteristics of excellent thermal oxygen stability, excellent solubility and cleanness, good lubricating performance, low volatility and the like, can effectively prevent carbon deposition and oil sludge generation, and promotes effective operation of an engine, so that the oil change period is prolonged.
The base oil B is a tower bottom fraction product prepared by carrying out reduced pressure distillation cutting on II-type base oil 250N by a molecular distillation technology, and the cutting fraction process conditions are that the temperature is 200 ℃ and the pressure is 10-5MPa, the kinematic viscosity of the base oil B at 40 ℃ is controlled to be 50mm2/s～58mm2The viscosity index is more than 135, and the kinematic viscosity of the base oil B at 40 ℃ is controlled to be 53mm2/s～55mm2Compared with the conventional base oil, the base oil B has the advantages of excellent thermal oxidation stability and thermal stability, lower volatility, excellent viscosity-temperature property, good additive sensitivity and the like.
The base oil C is II-type base oil 500N with the viscosity index of more than 90, the II-type base oil with the viscosity index of more than 90 is obtained by hydrogenation and catalytic cracking under certain pressure, and compared with the conventional base oil, the base oil C has the advantages of low sulfur, low nitrogen, low aromatic hydrocarbon content, excellent thermal oxidation stability, lower volatility, excellent viscosity-temperature property, good additive sensitivity and the like.
The diesel engine oil composite agent is a mixture of a diesel engine oil composite agent HiTEC8799B and a multifunctional reinforcing agent HiTEC8757B of Afton company (Afton), USA, the weight ratio of the HiTEC8799B to the multifunctional reinforcing agent HiTEC8757B is 3.5: 1-4.5: 1, the diesel engine oil composite agent is prepared by using high-quality detergents, dispersants, oxidation and corrosion inhibitors, ashless antioxidants, friction reducers and the like, and the piston carbon charging and cylinder wear of an engine can be remarkably improved by mixing the diesel engine oil composite agent HiTEC8799B and the multifunctional reinforcing agent HiTEC8757B, and the diesel engine oil composite agent has excellent soot dispersion, oxidation, corrosion resistance and abrasion resistance, can effectively protect the engine and can prolong the service life of the engine.
The diesel engine oil complexing agent HiTEC8799B has the following parameters: the flash point is lowest 135, and the kinematic viscosity at 100 ℃ is 152mm2(s) a density of 0.956g/ml at 15 ℃ and a total base number of 66mgKOH/g, said multifunctional strengthening agent HiTEC8757B having the following parameters: the flash point is minimum 120 ℃, the kinematic viscosity at 100 ℃ is 12mm2(s), a density of 1.087g/ml at 15 ℃ and a total base number of 155 mgKOH/g.
The friction improver is a mixture of Ketjenlube2700 and Ketjenlube3100 of Italy Manchu chemical industry Co., Ltd (Italmatch chemical S.p.A), the weight ratio of the Ketjenlube2700 to the Ketjenlube3100 is 0.3: 1-1: 1, the viscosity of the Ketjenlube2700 is very high, and the kinematic viscosity at 40 ℃ is as high as 11000mm2s, viscosity index of 255, the ester synthetic oil Ketjenlube2700 showed an unusual low thickening effect at low temperatures when formulated, therefore, the compound oil has the efficacy of a tackifier with stable shearing, and the Ketjenlube3100 of the ester synthetic oil has excellent compatibility, plays a role in solubilizing in a system of the ester synthetic oil Ketjenlube2700 and the low-polarity mineral oil, since the ester synthetic oil Ketjenlube3100 has excellent compatibility, can directly replace PAO100, so that the formula is simpler, the comprehensive cost is lower, more importantly, the performance can be well improved, especially the friction and the lubricating performance, the friction modifier selected by the invention not only has good compatibility with a composite additive, can improve the film forming performance of an oil product and reduce the friction, and the oil has excellent thermal oxidation stability, can improve the cleaning and dispersing performance of oil products, and avoids carbon deposition on parts such as a combustion chamber, a piston ring, an air valve and the like.
The ester synthetic oil Ketjenlube2700 has the following parameters: kinematic viscosity at 40 ℃ of 11000mm2S, kinematic viscosity at 100 ℃ of 700mm2The viscosity index is 255, the density at 20 ℃ is 0.963g/ml, the flash point is 270 ℃, the pour point is-10 ℃, the acid value is 0.08mgKOH/g, and the Ketjenlube3100 for the ester synthetic oil has the following parameters: kinematic viscosity at 40 ℃ of 990mm2S, kinematic viscosity at 100 ℃ of 94mm2(ii)/s, viscosity index of 174, density of 0.930g/ml at 20 ℃, flash point of 260 ℃, pour point of-36 ℃ and acid value of 0.05 mgKOH/g.
The pour point depressant is selected from polymethacrylates, preferably Viscoplex1-156, and improves the low-temperature fluidity of the oil product.
The preparation method of the long-life energy-saving diesel oil comprises the following steps: adding 250N cut fraction of II base oil and one or two mixtures of 500N of I base oil and 500N of II base oil into a blending kettle, heating to 85 ℃, stirring for 1h, adding synthetic ester, keeping the temperature at 60 ℃, adding a diesel engine oil complexing agent, continuing to stir for 0.5h, adding a friction modifier and a pour point depressant, continuing to stir for 3h, and cooling to room temperature to obtain the long-life energy-saving diesel engine oil composition.
And (3) testing main performances: 6 samples of the long-life energy-saving diesel engine oil composition of the application are taken, the content of each component in the 6 samples has difference, and the main performance of the commercial CI-415W40 diesel engine oil is taken as a comparison object.
TABLE 1 first set of sample Components
Figure BDA0001469620850000091
Figure BDA0001469620850000101
TABLE 2 second set of sample Components
Figure BDA0001469620850000102
TABLE 3 third group of sample Components
Figure BDA0001469620850000103
Figure BDA0001469620850000111
TABLE 4 fourth set of sample Components
Figure BDA0001469620850000112
TABLE 5 fifth set of sample Components
Figure BDA0001469620850000113
TABLE 6 sixth set of sample Components
Figure BDA0001469620850000114
Figure BDA0001469620850000121
TABLE 7 Performance index data for each group of sample oils
Figure BDA0001469620850000122
And (4) conclusion: as can be seen from the data in Table 7, the product obtained by the invention has proper high-temperature shear viscosity and low-temperature dynamic viscosity, and compared with the commercially available CI-415W40 diesel engine oil, the evaporation loss is obviously reduced, the wear-scar diameter and the friction coefficient are obviously reduced, the good lubricating antifriction property and low volatility are shown, and the excellent fuel economy and the durable protection to the engine of the oil are ensured.
Testing the performance of an engine:
a first group of samples in the main performance test and commercially available CI-415W40 diesel engine oil are selected and sent to an automobile quality supervision and inspection center (Xiangyang) automobile test field of the high and new area of Xiangyang city in Hubei province for carrying out the automobile engine performance test.
The inspection basis is as follows: GB/T18297-2001 automobile engine performance test method
The detection method comprises the following steps: engine Performance comparisons
And (4) checking items: engine power test, mechanical loss test, and load characteristic test for automobile
The specification and model of the engine are as follows: ISLe29040
The results of the power test, the mechanical loss test and the load characteristic test are shown in tables 8 and 9 and FIG. 1
TABLE 8 Power test results
Figure BDA0001469620850000131
Figure BDA0001469620850000141
TABLE 9 mechanical loss test results
Figure BDA0001469620850000142
And (4) conclusion: as can be seen from the data in Table 8, the long life energy efficient diesel engine oil of the present application has a higher corrected available power and a lower corrected specific fuel consumption than the commercially available CI-415W40 diesel oil, whether the engine is operating at a high speed or a low speed.
As can be seen from the data in Table 9, the long-life energy-saving diesel engine oil of the present application has significantly smaller mechanical loss torque than the commercially available CI-415W40 diesel engine oil under the condition of high engine speed, which shows that the long-life energy-saving diesel engine oil of the present application has better lubricating and friction reducing performance than the commercially available CI-415W40 diesel engine oil.
In fig. 1, the x-axis represents the corrected effective torque (N × m), the y-axis represents the corrected specific fuel consumption, the curve 1 represents the curve of the commercially available CI-415W40 diesel engine oil, and the curve 2 represents the curve of the diesel engine oil of the present application, and it can be seen from fig. 1 that the corrected specific fuel consumption of the long-life energy-saving diesel engine oil of the present application is lower than that of the commercially available CI-415W40 diesel engine oil as the corrected effective torque increases at the engine speed of 1000 r/min.
To summarize: the long-life energy-saving diesel engine oil can meet the quality grade requirement of GB11122-2006 CI-415W40, and engine performance tests show that the long-life energy-saving diesel engine oil has good fuel economy retention capacity, so that the oil is ensured to have a lasting energy-saving and friction-reducing effect in the whole oil change period, the durability of an engine is effectively protected, and a good technical effect is achieved.

Claims (6)

1. The long-life energy-saving diesel engine oil composition is characterized by comprising the following components in percentage by weight: base oil A: 2% -6%, base oil B: 33% -45%, base oil C: 35-45%, 8-18% of diesel engine oil complexing agent, friction modifier: 2-6% and pour point depressant: 0.05 percent to 0.5 percent;
the base oil A is synthetic ester, and the base oil A is selected from polyol ester TRS 6810;
the base oil B is a product of a bottom fraction obtained by cutting 250N type II base oil by vacuum distillation through a molecular distillation technology, and the kinematic viscosity of the base oil B at 40 ℃ is controlled to be 50mm2/s～58mm2(ii)/s, viscosity index of 135 or more;
the base oil C is one or a mixture of two of group I base oil 500N and group II base oil 500N;
the friction modifier is a mixture of ester synthetic oil Ketjenlube2700 and Ketjenlube3100, and the weight ratio of the Ketjenlube2700 to the Ketjenlube3100 is 0.3: 1-1: 1;
the pour point depressant is polymethacrylate.
2. The long-life energy-saving diesel engine oil composition as claimed in claim 1, wherein the kinematic viscosity of the base oil B at 40 ℃ is controlled to be 53mm2/s～55mm2/s。
3. The long life energy saving diesel engine oil composition as set forth in claim 1, wherein said base oil B is a group II base oil 250N passing condition of temperature 200 ℃ and pressure 10-5MPa cutting fraction.
4. The long-life energy-saving diesel engine oil composition as claimed in claim 1, wherein the base oil C is 500N group II base oil with viscosity index of 90 or more.
5. The long-life energy-saving diesel engine oil composition as claimed in claim 1, wherein the diesel engine oil complexing agent is a mixture of a diesel engine oil complexing agent HiTEC8799B and a multifunctional reinforcing agent HiTEC8757B, and the weight ratio of the diesel engine oil complexing agent HiTEC8799B to the multifunctional reinforcing agent HiTEC8757B is 3.5: 1-4.5: 1.
6. The method for preparing a long-life energy-saving diesel engine oil composition as claimed in any one of claims 1 to 5, characterized by comprising the steps of:
1) cutting 250N of II base oil, adding the cut fraction and one or two mixtures of 500N of I base oil and 500N of II base oil into a blending kettle, heating to 85 ℃, and stirring for 1 h;
2) adding synthetic ester, keeping the temperature at 60 ℃, adding the diesel engine oil complexing agent, continuously stirring for 0.5h, adding the friction modifier and the pour point depressant, continuously stirring for 3h, and cooling to room temperature.
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CN109825383A (en) * 2019-02-02 2019-05-31 江苏云瀚股份有限公司 Car engine lubrication system greasy filth exempts to tear cleaning compositions and preparation method and application open
CN110982598A (en) * 2019-12-12 2020-04-10 无锡科捷化学有限公司 Heavy-duty diesel engine oil and preparation method thereof
CN111363606A (en) * 2020-04-08 2020-07-03 江苏拉雅科技有限公司 Diester-nucleus-based lubricating oil composition for diesel engine and preparation method thereof
CN112694938A (en) * 2020-12-28 2021-04-23 广东南油石化有限公司 Motor oil for electric automobile and preparation method thereof
CN113174285B (en) * 2021-04-27 2022-08-30 中国石油化工股份有限公司 Engine oil composition, preparation method thereof and method for improving energy saving performance and/or bearing abrasion resistance of engine

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CN105542922A (en) * 2016-01-07 2016-05-04 北京雅士科莱恩石油化工有限公司 Energy-saving diesel engine oil with ultra-long oil change mileage and preparation method thereof
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