A protection agent for lubricating system of hybrid engine and preparation method thereof

Abstract

The application belongs to the technical field of engines, and particularly relates to an oil-electric hybrid engine lubricating system protective agent and a preparation method. In view of the problems of a large friction coefficient, poor oxidation resistance, and a too fast reduction speed of the total alkalinity of an engine lubricating system, the following scheme is provided. The weight parts of raw materials of the oil-electric hybrid engine lubricating system protective agent include 45-55 parts of V-type base oil, 15-20 parts of organic molybdenum nonmetallic anti-wear agent, 8-12 parts of an antioxidant, 7-12 parts of a viscosity improver, and 10-15 parts of a composite additive. The raw materials of the organic molybdenum nonmetallic anti-wear agent include nanoscale organic molybdenum, monobutyldiformimide ashless, and petroleum sulfonate. The movement mode of surface friction is changed into rolling friction, the friction coefficient is effectively reduced, the extreme pressure performance is improved, excellent anti-wear and anti-friction and oxidation resistance are achieved, and the reduction speed of the total alkalinity of the engine lubricating system is slowed down.

Description

Technical Field

[0001] This invention relates to the field of engine technology, and in particular to a protective agent for the lubrication system of a hybrid electric engine and its preparation method. Background Technology

[0002] Chinese patent application number 201910823827.5 discloses an engine lubricating and anti-wear protective agent and its preparation method, aiming to solve the problem of enhancing the lubrication effect of existing engine oils. This invention comprises the following raw materials in parts by weight: 70-95 parts α-olefin anhydride polymer, 5-20 parts base oil, 2-5 parts antioxidant, 0.2-1 parts passivating agent, and 3-10 parts anti-wear agent. When the finished product of this invention is added to engine oil, it can increase the lubricating viscosity of the oil under harsh climatic conditions and operating conditions, restore the smoothness and sealing of piston rings, enhance the stability of the engine oil, restore engine horsepower, reduce noise, and reduce fuel consumption. This product, when used with engine oil, can form a tough protective oil film on the metal surfaces of engine parts, increasing lubrication efficiency, significantly reducing engine wear, enhancing the protection of engine parts, thereby extending the engine's overhaul mileage and ultimately extending the engine's service life.

[0003] However, there are also some problems with the lubricating and anti-wear protective agent for this engine and its preparation method. For example, the lubrication system of a hybrid engine has higher requirements. The friction coefficient of a traditional car engine lubrication system is relatively large, which will aggravate the wear of internal parts. In addition, its anti-oxidation performance is poor, the formation rate of gum and carbon deposits in the engine lubrication system is relatively fast, and the decrease rate of the total base value of the engine lubrication system is too fast. Summary of the Invention

[0004] Based on the problems of high friction coefficient, poor oxidation resistance, and excessively rapid decrease in total base value of engine lubrication system in the background technology, this invention proposes a protective agent for the lubrication system of hybrid electric engines and its preparation method.

[0005] This invention proposes a protective agent for the lubrication system of a hybrid electric engine. The raw materials, by weight, include: 45-55 parts of Group V base oil, 15-20 parts of organic molybdenum non-metallic anti-wear agent, 8-12 parts of antioxidant, 7-12 parts of viscosity improver, and 10-15 parts of composite additive. The raw materials of the organic molybdenum non-metallic anti-wear agent include nano-sized organic molybdenum, ashless monosuccinimide, and petroleum sulfonate. The composite additive includes extreme pressure agent, pour point depressant, antifoaming agent, polyether, non-metallic anti-knock agent, and metallic rust inhibitor. This agent transforms the surface friction motion mode into rolling friction, effectively reducing the coefficient of friction, improving extreme pressure performance, and exhibiting excellent anti-wear, friction reduction, and oxidation resistance properties, thus slowing down the rate of decrease in the total base value of the engine lubrication system.

[0006] Preferably, the Group V base oil comprises synthetic hydrocarbons, ester base oils, and recycled base oils, with the weight ratio of synthetic hydrocarbons, ester base oils, and recycled base oils controlled at 2:4:4. The Group V base oils ensure the dispersion and compatibility of the materials.

[0007] Preferably, the method for preparing the Group V base oil involves obtaining synthetic hydrocarbons, ester base oils, and recycled base oils, then pouring these materials into a high-speed mixer and stirring at high speed for 15 minutes to obtain the Group V base oil. This method effectively ensures the quality of the base oil.

[0008] Preferably, the ratio of nano-sized organic molybdenum, ashless monosuccinimide, and petroleum sulfonate in the organic molybdenum non-metallic anti-wear agent is controlled at 2:2:3 to ensure the wear resistance of the material.

[0009] Preferably, the preparation method of the organic molybdenum non-metallic anti-wear agent is as follows: nano-sized organic molybdenum, ashless monosuccinimide and petroleum sulfonate are obtained, poured into a reaction vessel and stirred. The reaction vessel is heated to 45℃~120℃ and stirred for 2 hours~3.5 hours. Ultrasonic dispersion is performed using an ultrasonic machine for 1 hour~3 hours. After uniform dispersion, the organic molybdenum non-metallic anti-wear agent is obtained, which can ensure the material's effectiveness.

[0010] Preferably, the antioxidant raw materials include 2,6-di-tert-butyl-α-dimethylamino-p-cresol, carbamate, and phosphorous acid, and the viscosity improver is polyhydrogenated styrene isoprene, to ensure the antioxidant effect and improve viscosity.

[0011] Preferably, the weight ratio of extreme pressure agent, pour point depressant, antifoaming agent, polyether, non-metallic anti-knock agent and metallic rust inhibitor in the composite additive is controlled at 3:1:1:2:2:1 to enhance the protection effect on the lubrication system.

[0012] A method for preparing a protective agent for the lubrication system of a hybrid electric engine includes the following steps:

[0013] S1: Obtain Group V base oil and organic molybdenum non-metallic anti-wear agent. Pour Group V base oil into a reaction vessel, then add organic molybdenum non-metallic anti-wear agent and stir for 60 to 100 minutes to obtain mixed oil.

[0014] S2: The antioxidant, viscosity improver and composite additive are poured into the high-speed mixing equipment one after another. During the mixing process, the temperature is raised to 45℃~55℃ and the mixing speed is increased to 1220r / min~1360r / min. The mixture is stirred for 30 minutes~60 minutes to obtain the mixture.

[0015] S3: Pour the mixture into the mixed oil, stir and react in a reaction vessel, and after stirring for 1 hour, use an ultrasonic generator to perform ultrasonic treatment and ultrasonic dispersion for 40 to 50 minutes to obtain the lubrication system protectant for hybrid electric engines.

[0016] Preferably, in step S1, the temperature is raised to 45℃~60℃ and the stirring speed is increased to 320r / min~360r / min during the stirring process to ensure the stirring and mixing effect.

[0017] Preferably, in step S2, after the mixture is stirred evenly, it is ground using a grinding device until it passes through a 300-mesh sieve, making the mixture finer and facilitating the mixing and compatibility of the materials.

[0018] The beneficial effects of this invention are:

[0019] 1. This invention contains organic molybdenum active ingredients, which decompose into nanoscale chemical reaction films under high temperature and high pressure. These films are stacked on the metal surface in a layered microcrystalline structure, changing the surface friction of the metal from sliding friction to rolling friction, effectively reducing the coefficient of friction and improving extreme pressure performance.

[0020] 2. This application contains amino high-temperature antioxidant groups, which can enhance the high-temperature oxidation resistance of lubricating oil under high compression ratio and high temperature conditions, delay the formation of gum and carbon deposits in the engine lubrication system, and slow down the rate of decrease in the total base number of the engine lubrication system.

[0021] By transforming surface friction into rolling friction, the coefficient of friction is effectively reduced, extreme pressure performance is improved, and excellent anti-wear, anti-friction, and anti-oxidation properties are achieved, thus slowing down the rate of decrease in the total base number of the engine lubrication system. Attached Figure Description

[0022] Figure 1 This is a flowchart illustrating the workflow proposed in this invention. Detailed Implementation

[0023] The present invention will be further explained below with reference to specific embodiments.

[0024] Reference Figure 1 Example 1

[0025] This embodiment proposes a protective agent for the lubrication system of a hybrid electric engine. The raw materials include, by weight: 50 parts of Group V base oil, 18 parts of organic molybdenum non-metallic anti-wear agent, 11 parts of antioxidant, 9 parts of viscosity improver, and 12 parts of composite additive. The raw materials for the organic molybdenum non-metallic anti-wear agent include nano-sized organic molybdenum, ashless monosuccinimide, and petroleum sulfonate. The composite additive includes extreme pressure agent, pour point depressant, antifoaming agent, polyether, non-metallic anti-knock agent, and metallic rust inhibitor. The Group V base oil includes synthetic hydrocarbons, ester base oils, and recycled base oils, with the weight ratio of synthetic hydrocarbons, ester base oils, and recycled base oils controlled at 2:4:4. The preparation method of the Group V base oil is as follows: obtain synthetic hydrocarbons, ester base oils, and recycled base oils, and pour them into the interior of a high-speed mixer. High-speed stirring was performed for 15 minutes to obtain Group V base oil. The ratio of nano-sized organic molybdenum, ashless monosuccinimide, and petroleum sulfonate in the organic molybdenum non-metallic anti-wear agent was controlled at 2:2:3. The preparation method of the organic molybdenum non-metallic anti-wear agent was as follows: nano-sized organic molybdenum, ashless monosuccinimide, and petroleum sulfonate were obtained, poured into a reaction vessel, and stirred. The reaction vessel was heated to 60°C and stirred for 2.5 hours. Ultrasonic dispersion was performed using an ultrasonic machine. After uniform dispersion for 2 hours, the organic molybdenum non-metallic anti-wear agent was obtained. The raw materials for the antioxidant included 2,6-di-tert-butyl-α-dimethylamino-p-cresol, carbamate, and phosphorous acid. The viscosity improver was polyhydrogenated styrene isoprene. The weight ratio of extreme pressure agent, pour point depressant, antifoaming agent, polyether, non-metallic anti-knock agent, and metal rust inhibitor in the composite additive was controlled at 3:1:1:2:2:1.

[0026] A method for preparing a protective agent for the lubrication system of a hybrid electric engine includes the following steps:

[0027] S1: Obtain Group V base oil and organic molybdenum non-metallic anti-wear agent. Pour Group V base oil into a reaction vessel, then add organic molybdenum non-metallic anti-wear agent and stir. During stirring, raise the temperature to 56℃ and increase the stirring speed to 350r / min. Stir for 86 minutes to obtain mixed oil.

[0028] S2: The antioxidant, viscosity improver and composite additive are poured into the high-speed mixing equipment one after another. During the mixing process, the temperature is raised to 52℃ and the mixing speed is increased to 1280r / min. The mixture is mixed for 45 minutes. After the mixture is evenly mixed, it is ground with a grinding equipment until it passes through a 300-mesh sieve to obtain the mixture.

[0029] S3: Pour the mixture into the mixed oil, stir and react in the reaction vessel, mix and stir for 1 hour, then use an ultrasonic generator to perform ultrasonic treatment and ultrasonic dispersion for 45 minutes to obtain the lubrication system protectant for the hybrid electric engine.

[0030] Reference Figure 1 Example 2

[0031] This embodiment proposes a protective agent for the lubrication system of a hybrid electric engine. The raw materials include, by weight: 50 parts of Group V base oil, 20 parts of organic molybdenum non-metallic anti-wear agent, 10 parts of antioxidant, 9 parts of viscosity improver, and 11 parts of composite additive. The raw materials for the organic molybdenum non-metallic anti-wear agent include nano-sized organic molybdenum, ashless monosuccinimide, and petroleum sulfonate. The composite additive includes extreme pressure agent, pour point depressant, antifoaming agent, polyether, non-metallic anti-knock agent, and metallic rust inhibitor. The Group V base oil includes synthetic hydrocarbons, ester base oils, and recycled base oils, with the weight ratio of synthetic hydrocarbons, ester base oils, and recycled base oils controlled at 2:4:4. The preparation method of the Group V base oil is as follows: obtain synthetic hydrocarbons, ester base oils, and recycled base oils, and pour them into the interior of a high-speed mixer. High-speed stirring was performed for 15 minutes to obtain Group V base oil. The ratio of nano-sized organic molybdenum, ashless monosuccinimide, and petroleum sulfonate in the organic molybdenum non-metallic anti-wear agent was controlled at 2:2:3. The preparation method of the organic molybdenum non-metallic anti-wear agent was as follows: nano-sized organic molybdenum, ashless monosuccinimide, and petroleum sulfonate were obtained, poured into a reaction vessel, and stirred. The reaction vessel was heated to 60°C and stirred for 2.5 hours. Ultrasonic dispersion was performed using an ultrasonic machine for 2 hours. After uniform dispersion, the organic molybdenum non-metallic anti-wear agent was obtained. The raw materials for the antioxidant included 2,6-di-tert-butyl-α-dimethylamino-p-cresol, carbamate, and phosphorous acid. The viscosity improver was polyhydrogenated styrene isoprene. The weight ratio of extreme pressure agent, pour point depressant, antifoaming agent, polyether, non-metallic anti-knock agent, and metallic rust inhibitor in the composite additive was controlled at 3:1:1:2:2:1.

[0032] A method for preparing a protective agent for the lubrication system of a hybrid electric engine includes the following steps:

[0033] S1: Obtain Group V base oil and organic molybdenum non-metallic anti-wear agent. Pour Group V base oil into a reaction vessel, then add organic molybdenum non-metallic anti-wear agent and stir. During stirring, raise the temperature to 56℃ and increase the stirring speed to 350r / min. Stir for 86 minutes to obtain mixed oil.

[0034] S2: The antioxidant, viscosity improver and composite additive are poured into the high-speed mixing equipment one after another. During the mixing process, the temperature is raised to 52℃ and the mixing speed is increased to 1280r / min. The mixture is mixed for 45 minutes. After the mixture is evenly mixed, it is ground with a grinding equipment until it passes through a 300-mesh sieve to obtain the mixture.

[0035] S3: Pour the mixture into the mixed oil, stir and react in the reaction vessel, mix and stir for 1 hour, then use an ultrasonic generator to perform ultrasonic treatment and ultrasonic dispersion for 45 minutes to obtain the lubrication system protectant for the hybrid electric engine.

[0036] Reference Figure 1 Example 3

[0037] This embodiment proposes a protective agent for the lubrication system of a hybrid electric engine. The raw materials, by weight, include: 53 parts of Group V base oil, 17 parts of organic molybdenum non-metallic anti-wear agent, 9 parts of antioxidant, 8 parts of viscosity modifier, and 13 parts of composite additives. The organic molybdenum non-metallic anti-wear agent comprises nano-sized organic molybdenum, ashless monosuccinimide, and petroleum sulfonate. The composite additives include extreme pressure agents, pour point depressants, antifoaming agents, polyethers, non-metallic anti-knock agents, and metallic rust inhibitors. The Group V base oil comprises synthetic hydrocarbons, ester base oils, and recycled base oils, with the weight ratio of synthetic hydrocarbons, ester base oils, and recycled base oils controlled at 2:4:4. The preparation method of the Group V base oil involves obtaining synthetic hydrocarbons, ester base oils, and recycled base oils, and then pouring them into the interior of a high-speed mixer for further processing. High-speed stirring was performed for 15 minutes to obtain Group V base oil. The ratio of nano-sized organic molybdenum, ashless monosuccinimide, and petroleum sulfonate in the organic molybdenum non-metallic anti-wear agent was controlled at 2:2:3. The preparation method of the organic molybdenum non-metallic anti-wear agent was as follows: nano-sized organic molybdenum, ashless monosuccinimide, and petroleum sulfonate were obtained, poured into a reaction vessel, and stirred. The reaction vessel was heated to 60°C and stirred for 2.5 hours. Ultrasonic dispersion was performed using an ultrasonic machine for 2 hours. After uniform dispersion, the organic molybdenum non-metallic anti-wear agent was obtained. The raw materials for the antioxidant included 2,6-di-tert-butyl-α-dimethylamino-p-cresol, carbamate, and phosphorous acid. The viscosity improver was polyhydrogenated styrene isoprene. The weight ratio of extreme pressure agent, pour point depressant, antifoaming agent, polyether, non-metallic anti-knock agent, and metal rust inhibitor in the composite additive was controlled at 3:1:1:2:2:1.

[0038] A method for preparing a protective agent for the lubrication system of a hybrid electric engine includes the following steps:

[0039] S1: Obtain Group V base oil and organic molybdenum non-metallic anti-wear agent. Pour Group V base oil into a reaction vessel, then add organic molybdenum non-metallic anti-wear agent and stir. During stirring, raise the temperature to 56℃ and increase the stirring speed to 350r / min. Stir for 86 minutes to obtain mixed oil.

[0040] S2: The antioxidant, viscosity improver and composite additive are poured into the high-speed mixing equipment one after another. During the mixing process, the temperature is raised to 52℃ and the mixing speed is increased to 1280r / min. The mixture is mixed for 45 minutes. After the mixture is evenly mixed, it is ground with a grinding equipment until it passes through a 300-mesh sieve to obtain the mixture.

[0041] S3: Pour the mixture into the mixed oil, stir and react in the reaction vessel, mix and stir for 1 hour, then use an ultrasonic generator to perform ultrasonic treatment and ultrasonic dispersion for 45 minutes to obtain the lubrication system protectant for the hybrid electric engine.

[0042] Reference Figure 1 Example 4

[0043] This embodiment proposes a protective agent for the lubrication system of a hybrid electric engine. The raw materials include, by weight: 49 parts of Group V base oil, 16 parts of organic molybdenum non-metallic anti-wear agent, 11 parts of antioxidant, 11 parts of viscosity improver, and 13 parts of composite additive. The raw materials for the organic molybdenum non-metallic anti-wear agent include nano-sized organic molybdenum, ashless monosuccinimide, and petroleum sulfonate. The composite additive includes extreme pressure agent, pour point depressant, antifoaming agent, polyether, non-metallic anti-knock agent, and metallic rust inhibitor. The Group V base oil includes synthetic hydrocarbons, ester base oils, and recycled base oils, with the weight ratio of synthetic hydrocarbons, ester base oils, and recycled base oils controlled at 2:4:4. The preparation method of the Group V base oil is as follows: obtain synthetic hydrocarbons, ester base oils, and recycled base oils, and pour them into the interior of a high-speed mixer. High-speed stirring was performed for 15 minutes to obtain Group V base oil. The ratio of nano-sized organic molybdenum, ashless monosuccinimide, and petroleum sulfonate in the organic molybdenum non-metallic anti-wear agent was controlled at 2:2:3. The preparation method of the organic molybdenum non-metallic anti-wear agent was as follows: nano-sized organic molybdenum, ashless monosuccinimide, and petroleum sulfonate were obtained, poured into a reaction vessel, and stirred. The reaction vessel was heated to 60°C and stirred for 2.5 hours. Ultrasonic dispersion was performed using an ultrasonic machine for 2 hours. After uniform dispersion, the organic molybdenum non-metallic anti-wear agent was obtained. The raw materials for the antioxidant included 2,6-di-tert-butyl-α-dimethylamino-p-cresol, carbamate, and phosphorous acid. The viscosity improver was polyhydrogenated styrene isoprene. The weight ratio of extreme pressure agent, pour point depressant, antifoaming agent, polyether, non-metallic anti-knock agent, and metallic rust inhibitor in the composite additive was controlled at 3:1:1:2:2:1.

[0044] A method for preparing a protective agent for the lubrication system of a hybrid electric engine includes the following steps:

[0045] S1: Obtain Group V base oil and organic molybdenum non-metallic anti-wear agent. Pour Group V base oil into a reaction vessel, then add organic molybdenum non-metallic anti-wear agent and stir. During stirring, raise the temperature to 56℃ and increase the stirring speed to 350r / min. Stir for 86 minutes to obtain mixed oil.

[0046] S2: The antioxidant, viscosity improver and composite additive are poured into the high-speed mixing equipment one after another. During the mixing process, the temperature is raised to 52℃ and the mixing speed is increased to 1280r / min. The mixture is mixed for 45 minutes. After the mixture is evenly mixed, it is ground with a grinding equipment until it passes through a 300-mesh sieve to obtain the mixture.

[0047] S3: Pour the mixture into the mixed oil, stir and react in the reaction vessel, mix and stir for 1 hour, then use an ultrasonic generator to perform ultrasonic treatment and ultrasonic dispersion for 45 minutes to obtain the lubrication system protectant for the hybrid electric engine.

[0048] Reference Figure 1 Example 5

[0049] This embodiment proposes a protective agent for the lubrication system of a hybrid electric engine. The raw materials include, by weight: 50 parts of Group V base oil, 15 parts of organic molybdenum non-metallic anti-wear agent, 8 parts of antioxidant, 12 parts of viscosity improver, and 15 parts of composite additive. The raw materials for the organic molybdenum non-metallic anti-wear agent include nano-sized organic molybdenum, ashless monosuccinimide, and petroleum sulfonate. The composite additive includes extreme pressure agent, pour point depressant, antifoaming agent, polyether, non-metallic anti-knock agent, and metallic rust inhibitor. The Group V base oil includes synthetic hydrocarbons, ester base oils, and recycled base oils, with the weight ratio of synthetic hydrocarbons, ester base oils, and recycled base oils controlled at 2:4:4. The preparation method of the Group V base oil is as follows: obtain synthetic hydrocarbons, ester base oils, and recycled base oils, and pour them into the interior of a high-speed mixer. High-speed stirring was performed for 15 minutes to obtain Group V base oil. The ratio of nano-sized organic molybdenum, ashless monosuccinimide, and petroleum sulfonate in the organic molybdenum non-metallic anti-wear agent was controlled at 2:2:3. The preparation method of the organic molybdenum non-metallic anti-wear agent was as follows: nano-sized organic molybdenum, ashless monosuccinimide, and petroleum sulfonate were obtained, poured into a reaction vessel, and stirred. The reaction vessel was heated to 60°C and stirred for 2.5 hours. Ultrasonic dispersion was performed using an ultrasonic machine for 2 hours. After uniform dispersion, the organic molybdenum non-metallic anti-wear agent was obtained. The raw materials for the antioxidant included 2,6-di-tert-butyl-α-dimethylamino-p-cresol, carbamate, and phosphorous acid. The viscosity improver was polyhydrogenated styrene isoprene. The weight ratio of extreme pressure agent, pour point depressant, antifoaming agent, polyether, non-metallic anti-knock agent, and metallic rust inhibitor in the composite additive was controlled at 3:1:1:2:2:1.

[0050] A method for preparing a protective agent for the lubrication system of a hybrid electric engine includes the following steps:

[0051] S1: Obtain Group V base oil and organic molybdenum non-metallic anti-wear agent. Pour Group V base oil into a reaction vessel, then add organic molybdenum non-metallic anti-wear agent and stir. During stirring, raise the temperature to 56℃ and increase the stirring speed to 350r / min. Stir for 86 minutes to obtain mixed oil.

[0052] S2: The antioxidant, viscosity improver and composite additive are poured into the high-speed mixing equipment one after another. During the mixing process, the temperature is raised to 52℃ and the mixing speed is increased to 1280r / min. The mixture is mixed for 45 minutes. After the mixture is evenly mixed, it is ground with a grinding equipment until it passes through a 300-mesh sieve to obtain the mixture.

[0053] S3: Pour the mixture into the mixed oil, stir and react in the reaction vessel, mix and stir for 1 hour, then use an ultrasonic generator to perform ultrasonic treatment and ultrasonic dispersion for 45 minutes to obtain the lubrication system protectant for the hybrid electric engine.

[0054] The lubrication system protectants prepared in Examples 1 to 5 are compared with conventional lubrication system protectants, as shown in the table below:

[0055]

[0056] For the oxidation induction period, the test method is described in ASTM D2272.

[0057] The average coefficient of friction was determined by the "four-ball test" under the following conditions: 74℃, 40.0 kgf, 1200 rpm, and 30 min.

[0058] The total alkali number was tested according to GB11121 standard.

[0059] As can be seen from the table above, the friction coefficient and antioxidant properties of the lubrication system protectant prepared by the present invention are significantly improved, the rate of decrease in the total base number of the engine lubrication system is slowed down, and embodiment two is the best embodiment.

[0060] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A protection agent for a lubrication system of a hybrid engine, characterized in that, The weight parts of raw materials include: 45-55 parts of V type base oil, 15-20 parts of organic molybdenum non-metallic anti-wear agent, 8-12 parts of antioxidant, 7-12 parts of viscosity improver and 10-15 parts of composite additive, the raw materials of organic molybdenum non-metallic anti-wear agent include nano organic molybdenum, ash-free monobutyl succinimide and petroleum sulfonate, and the composite additive includes extreme pressure agent, pour point depressant, antifoaming agent, polyether, non-metallic anti-knock agent and metal anti-rust agent; The V type base oil includes synthetic hydrocarbons, ester base oil and regenerated base oil, and the weight ratio of the synthetic hydrocarbons, ester base oil and regenerated base oil is controlled to be 2:4:4; The preparation method of the V type base oil comprises the following steps: obtaining synthetic hydrocarbons, ester base oil and regenerated base oil, and pouring the synthetic hydrocarbons, ester base oil and regenerated base oil into a high-speed stirrer for high-speed stirring, and then obtaining the V type base oil after stirring for 15 minutes. The ratio of nano organic molybdenum, ash-free monobutyl succinimide and petroleum sulfonate in the organic molybdenum non-metallic anti-wear agent is controlled to be 2:2:

3. The preparation method of the organic molybdenum non-metallic anti-wear agent comprises the following steps: obtaining nano organic molybdenum, ash-free monobutyl succinimide and petroleum sulfonate, pouring them into a reaction kettle for stirring, heating the reaction kettle to 45-120 DEG C, stirring for 2-3.5 hours, and then performing ultrasonic dispersion treatment by using an ultrasonic machine for 1-3 hours, so that the organic molybdenum non-metallic anti-wear agent is obtained after uniform dispersion. The raw materials of the antioxidant include 2,6-di-tert-butyl alpha-dimethylamino-p-cresol, carbamate and phosphorous acid.

2. The lubricating system protectant for a hybrid engine of claim 1, wherein, The viscosity improver is polyhydrogenated styrene isoprene.

3. The lubricating system protectant for a hybrid engine of claim 1, wherein, The weight ratio of the extreme pressure agent, pour point depressant, antifoaming agent, polyether, non-metallic anti-knock agent and metal anti-rust agent in the composite additive is controlled to be 3:1:1:2:2:

1.

4. A method of preparing the oil-electric hybrid engine lubricating system protectant of claim 1, characterized by, The method comprises the following steps: S1: obtaining V type base oil and organic molybdenum non-metallic anti-wear agent, pouring the V type base oil into a reaction kettle, and then pouring the organic molybdenum non-metallic anti-wear agent for stirring, so that the mixed oil is obtained after stirring for 60-100 minutes; S2: pouring the antioxidant, viscosity improver and composite additive into a high-speed stirring device in sequence, increasing the temperature to 45-55 DEG C and the stirring speed to 1220-1360 r / min during the stirring process, and then stirring for 30-60 minutes, so that the mixture is obtained; S3: pouring the mixture into the mixed oil, stirring by using a reaction kettle, performing ultrasonic treatment by using an ultrasonic generator after mixing and stirring for 1 hour, and then performing ultrasonic dispersion for 40-50 minutes, so that the oil-electric hybrid engine lubrication system protective agent is obtained.

5. The method of claim 4, wherein the oil-electric hybrid engine lubrication system protectant is prepared by the steps of: In the S1, the temperature is increased to 45-60 DEG C and the stirring speed is increased to 320-360 r / min during the stirring process.

6. The method of claim 4, wherein the oil-electric hybrid engine lubrication system protectant is prepared by the steps of: In the S2, the grinding equipment is used for grinding after the stirring is uniform, and the grinding is performed until the mixture passes through a 300-mesh sieve.

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