A highly clean and energy-saving internal combustion engine oil and preparation method thereof

Abstract

The present invention relates to the field of internal combustion engine oil preparation, and in particular to a highly clean and energy-saving internal combustion engine oil and a preparation method thereof. The present invention pre-configures raw materials of internal combustion engine oil and preliminarily preheats and mixes, obtains a surface image of a mixed liquid after heating and stirring, and an average force value of a stirring rod during heating and stirring, determines the dispersion density and concentrated area of ​​additive particles based on the surface image, calculates an additive polymerization tendency characterization coefficient in combination with the average force value, determines emulsification parameters and performs shear emulsification, stops shear emulsification after a predetermined period, obtains the distribution of polymerization features in the surface image, calculates a dispersion characterization value in combination with a chromaticity change of the emulsion, determines whether the shear emulsification process enters a stable dispersion moment, facilitates subsequent adaptive selection of a shear emulsification processing method, and further saves energy, optimizes the process, ensures efficiency, improves the dispersibility of additive particles, makes the additive particles evenly dispersed in the base oil, and enhances the stability of the internal combustion engine oil.

Description

Technical Field

[0001] The invention relates to the field of internal combustion engine oil preparation, and in particular to a highly clean and energy-saving internal combustion engine oil and a preparation method thereof. Background Art

[0002] With the continuous development of internal combustion engines, the requirements for internal combustion engine oil are becoming higher and higher. Internal combustion engine oil needs to have good lubrication properties, antioxidant properties, anti-wear properties, and cleaning and dispersion properties to ensure the normal operation of the internal combustion engine and extend its service life. Therefore, the preparation method of internal combustion engine oil needs to be continuously innovated and improved to meet the needs of internal combustion engine development.

[0003] Chinese patent publication number: CN103740450A, discloses a micro-nano engine oil and a preparation method thereof, wherein the components and mass percentage of the micro-nano engine oil are: PAO 40% to 70%; adipic acid ester 5% to 30%; polyol ester 1% to 5%; engine oil compounding agent 5% to 10%; viscosity index improver 2% to 12%; pour point depressant 0.2% to 0.5%; compounded micro-nano anti-wear agent 0.1% to 4%, wherein the micro-nano anti-wear agent is micro-nano metal particles processed by centrifugal separation, grinding and dispersion, centrifugal treatment and other processes, and finally uniformly suspended in PAO to prepare a micro-nano concentrated liquid, and the micro-nano concentrated liquid is mixed into an engine oil mixture with PAO as the base oil, and the finished product can be obtained after only constant temperature stirring for 1 hour after mixing.

[0004] However, there are still the following problems in the prior art:

[0005] During the preparation of internal combustion engine oil, when the base oil and additive particles are shear emulsified, the local concentration of additive particles is prone to be too high, and the additives are not evenly dispersed in the base oil. The stability of the internal combustion engine oil is reduced, which may lead to a decrease in oil performance, such as lubricity, antioxidant properties, etc., affecting the lubrication and cleaning properties of the internal combustion engine oil. Summary of the invention

[0006] To this end, on the one hand, the present invention provides a method for preparing a highly clean and energy-saving internal combustion engine oil, which is used to overcome the problem in the prior art that the local concentration of additive particles is too high during the shear emulsification process, resulting in uneven dispersion and weakening the stability of the internal combustion engine oil.

[0007] To achieve the above object, the present invention provides a method for preparing a highly clean and energy-saving internal combustion engine oil, which comprises:

[0008] Step S1, pre-configuring the raw materials of the internal combustion engine oil, wherein the pre-configuration includes configuring the base oil of the internal combustion engine oil and required additives;

[0009] Step S2, preliminarily preheating and mixing the pre-configured raw material of the internal combustion engine oil, including heating and stirring the raw material of the internal combustion engine oil, and obtaining a surface image of the mixed liquid after the heating and stirring is completed and an average force value of the stirring rod during the heating and stirring process;

[0010] Step S3, determining the dispersion density and concentrated area of ​​the additive particles based on the surface image, and calculating the additive aggregation tendency characterization coefficient in combination with the average force value;

[0011] Step S4, determining the emulsification parameters based on the additive polymerization tendency characterization coefficient, pouring the preliminarily preheated mixed solution into an emulsification tank for shear emulsification, wherein:

[0012] After a predetermined period, the shear emulsification is stopped, the surface image of the emulsion is obtained to extract the distribution of the polymerization features in the surface image, and the dispersion characterization value is calculated in combination with the chromaticity change of the emulsion to determine whether the shear emulsification process has entered a stable dispersion moment, and whether to perform ultrasonic treatment on the emulsion and adjust the emulsification parameters before shear emulsification based on the dispersion characterization value;

[0013] Or, maintain the corresponding emulsification parameters to complete shear emulsification;

[0014] Wherein, the emulsification parameters include shear emulsification speed and shear emulsification time.

[0015] Furthermore, in step S3, the process of determining the dispersion density and the concentration area includes:

[0016] Collecting the contours of additive particles in the surface image;

[0017] Determine the two-dimensional coordinates of the contour of each additive particle, determine the adjacent distance between the contour of each additive particle and another contour of the nearest additive, and determine the variance of the adjacent distance as the dispersion density;

[0018] The area average of each additive profile was calculated and the area average was determined as the concentrated area.

[0019] Furthermore, in step S3, the additive polymerization tendency characterization coefficient is calculated according to formula (1):

[0020] (1)

[0021] In formula (1), G represents the coefficient characterizing the aggregation tendency of the additive, M represents the dispersion density, M0 represents the preset dispersion density standard threshold, S represents the concentration area, S0 represents the preset concentration area standard threshold, n represents the number of times the force value is obtained, Fi represents the force value of the stirring rod detected for the i-th time, ∆F represents the average force value of the stirring rod during the heating and stirring process, and F0 represents the preset force threshold.

[0022] Furthermore, in the step S4, determining the emulsification parameter based on the additive polymerization tendency characterization coefficient includes:

[0023] The determined emulsification parameters are positively correlated with the coefficient characterizing the polymerization tendency of the additive.

[0024] Furthermore, in step S4, the process of obtaining the surface image of the emulsion, extracting the distribution of the aggregation features in the surface image, and calculating the dispersion characterization value in combination with the chromaticity change of the emulsion includes:

[0025] Collecting the contours of additive particles in the surface image;

[0026] determining as aggregate features the contours of additive particles having an area greater than a predetermined aggregate area threshold;

[0027] determining the ratio of the total area of ​​each polymeric feature to the total area of ​​the liquid surface;

[0028] According to formula (2), the dispersion characterization value is calculated:

[0029] (2)

[0030] In formula (2), W represents the dispersion characterization value, P represents the ratio of the total area of ​​the aggregated features to the total area of ​​the liquid surface, P0 represents the preset standard ratio threshold, α represents the weight coefficient of the ratio of the total area of ​​the aggregated features to the total area of ​​the liquid surface, N represents the chromaticity change, N0 represents the preset chromaticity change threshold, and β represents the chromaticity change weight coefficient.

[0031] Furthermore, in step S4, determining whether the shear emulsification process has entered a stable dispersion moment includes:

[0032] If the dispersion characterization value in the surface image is less than a preset dispersion characterization standard threshold, it is determined that a stable dispersion moment has been entered.

[0033] Furthermore, in step S4, based on whether the shear emulsification process has entered a stable dispersion moment, a specific processing method for shear emulsification is selected, including:

[0034] If the dispersion reaches a stable state, the corresponding emulsification parameters are maintained to complete the shear emulsification.

[0035] If the stable dispersion moment has not been reached, it is determined whether to perform ultrasonic treatment on the emulsion and adjust the emulsification parameters based on the dispersion characteristic value.

[0036] Furthermore, in step S4, determining whether to perform ultrasonic treatment on the emulsion based on the dispersion characterization value includes:

[0037] If the dispersion characterization value is greater than or equal to a preset dispersion characterization standard threshold value, it is determined that the emulsion is to be subjected to ultrasonic treatment.

[0038] Furthermore, in step S4, adjusting the emulsification parameters based on the dispersion characterization value includes:

[0039] Increasing the emulsification parameter, the increase in the emulsification parameter is positively correlated with the dispersion characterization value.

[0040] Furthermore, the high-clean and energy-saving internal combustion engine oil prepared according to the above-mentioned high-clean and energy-saving internal combustion engine oil preparation method comprises: base oil and additives,

[0041] The base oil includes poly-alpha-olefin, and the additive includes sulfurized alkyl phenate calcium and dialkyl dithiophosphate zinc.

[0042] Compared with the prior art, the present invention pre-configures the raw materials of the internal combustion engine oil and performs preliminary preheating and mixing, obtains the surface image of the mixed liquid after the heating and stirring is completed, and the average force value of the stirring rod during the heating and stirring process, determines the dispersion density and concentrated area of ​​the additive particles based on the surface image, calculates the additive polymerization tendency characterization coefficient in combination with the average force value, determines the emulsification parameters and performs shear emulsification, stops the shear emulsification after a predetermined period, obtains the distribution of the polymerization characteristics in the surface image, calculates the dispersion characterization value in combination with the chromaticity change of the emulsion, determines whether the shear emulsification process enters the stable dispersion moment, and facilitates the subsequent adaptive selection of the specific treatment method of the shear emulsification, thereby saving energy, optimizing the process, ensuring efficiency, improving the dispersibility of the additive particles, making the additive particles evenly dispersed in the base oil, and enhancing the stability of the internal combustion engine oil.

[0043] In particular, the present invention determines the dispersion density and concentrated area of ​​additive particles through surface images and calculates the additive aggregation tendency characterization coefficient in combination with the average force value. In actual situations, during the heating and stirring process, a large number of additive particles may be placed, which may cause some additive particles to agglomerate. After the additive particles agglomerate, they are easy to float and aggregate on the liquid surface, and the fluidity of the base oil will also affect the tendency of additive particles to agglomerate. The present application characterizes the fluidity of the base oil through the average force value of the stirring rod, and then, through image data collection, the dispersion density and concentrated area of ​​the additive particles are combined with the average force value of the stirring rod to characterize the aggregation tendency of the additive particles, providing data support for the subsequent determination of emulsification parameters, and then, facilitating the subsequent adaptive selection of specific processing methods for shear emulsification, thereby saving energy, optimizing the process, ensuring efficiency, improving the dispersibility of the additive particles, making the additive particles evenly dispersed in the base oil, and enhancing the stability of the internal combustion engine oil.

[0044] In particular, the present invention determines whether the shear emulsification process has entered a stable dispersion moment by calculating a dispersion characterization value based on the distribution of polymerization features in the surface image and the change in the chromaticity of the emulsion. In actual situations, some additive particles tend to aggregate and float up at the initial stage of shear emulsification, resulting in poor shear emulsification. As the shear emulsification proceeds, the volume of the additive particles after aggregation will decrease, but some additive particles still aggregate, affecting the shear emulsification process. In addition, the present application considers determining the distribution of polymerization features through surface images to characterize the dispersion of the additive particle aggregates. In addition, since the base oil will undergo a chromaticity change as the additive particles melt, the present application considers calculating a dispersion characterization value based on the above phenomenon to determine whether the shear emulsification process has entered a stable dispersion moment, adaptively performing ultrasonic treatment on the emulsion and adjusting the emulsification parameters, thereby saving energy, optimizing the process, ensuring efficiency, improving the dispersibility of the additive particles, making the additive particles evenly dispersed in the base oil, and enhancing the stability of the internal combustion engine oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 A schematic diagram of the steps of a method for preparing a highly clean and energy-saving internal combustion engine oil according to an embodiment of the invention;

[0046] Figure 2 A logic decision diagram for determining the time of entering stable dispersion according to an embodiment of the invention;

[0047] Figure 3 A logical decision diagram for selecting a method for treating an emulsion according to an embodiment of the invention. DETAILED DESCRIPTION

[0048] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0049] See also Figures 1 to 3 As shown, Figure 1 This is a schematic diagram of the steps of the method for preparing a highly clean and energy-saving internal combustion engine oil according to an embodiment of the present invention. Figure 2 This is a logic decision diagram for determining the time of entering stable dispersion according to an embodiment of the invention. Figure 3 The logical decision diagram for selecting the treatment method of the emulsion according to the embodiment of the invention is as follows: the preparation method of the highly clean and energy-saving internal combustion engine oil of the invention comprises:

[0050] Step S1, pre-configuring the raw materials of the internal combustion engine oil, wherein the pre-configuration includes configuring the base oil of the internal combustion engine oil and required additives;

[0051] Step S2, preliminarily preheating and mixing the pre-configured raw material of the internal combustion engine oil, including heating and stirring the raw material of the internal combustion engine oil, and obtaining a surface image of the mixed liquid after the heating and stirring is completed and an average force value of the stirring rod during the heating and stirring process;

[0052] Step S3, determining the dispersion density and concentrated area of ​​the additive particles based on the surface image, and calculating the additive aggregation tendency characterization coefficient in combination with the average force value;

[0053] Step S4, determining the emulsification parameters based on the additive polymerization tendency characterization coefficient, pouring the preliminarily preheated mixed solution into an emulsification tank for shear emulsification, wherein:

[0054] After a predetermined period, the shear emulsification is stopped, the surface image of the emulsion is obtained to extract the distribution of the polymerization features in the surface image, and the dispersion characterization value is calculated in combination with the chromaticity change of the emulsion to determine whether the shear emulsification process has entered a stable dispersion moment, and whether to perform ultrasonic treatment on the emulsion and adjust the emulsification parameters before shear emulsification based on the dispersion characterization value;

[0055] Or, maintain the corresponding emulsification parameters to complete shear emulsification;

[0056] Wherein, the emulsification parameters include shear emulsification speed and shear emulsification time.

[0057] Specifically, there is no limitation on the equipment for heating and stirring the engine oil raw material. It only needs to provide an internal space for heating and stirring the engine oil raw material to obtain a mixed liquid, such as a stirrer. Of course, other forms can also be used, which will not be repeated here.

[0058] Specifically, there is no limitation on the equipment for detecting the force value of the stirring rod during the heating and stirring process. It is only necessary to provide an instrument for measuring the pressure exerted on the stirring rod, such as a pressure sensor. The pressure sensor can be set on the stirring rod to detect the force value of the stirring rod. The pressure sensor can detect the force value of the detection rod at a predetermined frequency. Of course, other forms can also be used, which will not be elaborated here.

[0059] Specifically, there is no limitation on the specific structure of the emulsification tank for shear emulsification. The main structure of the emulsification tank includes an emulsification head and an agitator, which is the prior art and will not be described in detail.

[0060] Specifically, an ultrasonic device may be arranged in the emulsification tank to emit ultrasonic waves to the emulsion, which will not be described in detail.

[0061] Specifically, the shear emulsification speed is the rotation speed of the agitator, and the shear emulsification time is the operation time of the emulsification tank.

[0062] Specifically, in step S3, the process of determining the dispersion density and the concentration area includes:

[0063] Collecting the contours of additive particles in the surface image;

[0064] Determine the two-dimensional coordinates of the contour of each additive particle, determine the adjacent distance between the contour of each additive particle and another contour of the nearest additive, and determine the variance of the adjacent distance as the dispersion density;

[0065] The area average of each additive profile was calculated and the area average was determined as the concentrated area.

[0066] Specifically, there is no limitation on the method of identifying the contour of additive particles. Preferably, an edge recognition algorithm can be used, or K-means clustering can be used to identify clusters and use the clusters as the contour of the additive. Of course, other methods can also be used, which will not be described in detail.

[0067] It is understandable that due to surface tension, some additive particles will aggregate into one piece after floating up, and the overall edge profile of the single additive particle can be used as the additive particle profile.

[0068] Specifically, in step S3, the additive polymerization tendency characterization coefficient is calculated according to formula (1):

[0069] (1)

[0070] In formula (1), G represents the coefficient characterizing the aggregation tendency of the additive, M represents the dispersion density, M0 represents the preset dispersion density standard threshold, S represents the concentration area, S0 represents the preset concentration area standard threshold, n represents the number of times the force value is obtained, Fi represents the force value of the stirring rod detected for the i-th time, ∆F represents the average force value of the stirring rod during the heating and stirring process, and F0 represents the preset force threshold.

[0071] Specifically, in this embodiment, the dispersion density standard threshold M0, the concentrated area standard threshold S0 and the force threshold F0 are preset, and a number of internal combustion engine oil raw material mixed liquid samples that have completed preheating and mixing are obtained. The dispersion density, concentrated area and stirring rod force value of each internal combustion engine oil mixed liquid sample are simultaneously obtained, and the dispersion density average value ∆M0, the concentrated area average value ∆S0 and the stirring rod average force value ∆F are solved. It is set that M0=r1×∆M0, S0=r1×∆S0, F0=r2×∆F0, r1 represents the first accuracy coefficient, r2 represents the second accuracy coefficient, 1.15<r1<1.25, 1.1<r2<1.15.

[0072] Specifically, the present invention determines the dispersion density and concentrated area of ​​additive particles through surface images and calculates the additive aggregation tendency characterization coefficient in combination with the average force value. In actual situations, during the heating and stirring process, a large number of additive particles may be placed, which may cause some additive particles to agglomerate. After the additive particles agglomerate, they tend to float and aggregate on the liquid surface, and the fluidity of the base oil will also affect the tendency of additive particles to agglomerate. The present application characterizes the fluidity of the base oil through the average force value of the stirring rod, and then, through image data collection, the dispersion density and concentrated area of ​​the additive particles are combined with the average force value of the stirring rod to characterize the tendency of additive particles to agglomerate, providing data support for the subsequent determination of emulsification parameters, and then, facilitating the subsequent adaptive selection of specific treatment methods for shear emulsification, thereby saving energy, optimizing the process, ensuring efficiency, improving the dispersibility of the additive particles, making the additive particles evenly dispersed in the base oil, and enhancing the stability of the internal combustion engine oil.

[0073] Specifically, in step S4, determining the emulsification parameter based on the additive polymerization tendency characterization coefficient includes:

[0074] The determined emulsification parameters are positively correlated with the coefficient characterizing the polymerization tendency of the additive.

[0075] In this embodiment, optionally,

[0076] The additive polymerization tendency characterization coefficient is compared with the first additive polymerization tendency characterization threshold value E1 and the second additive polymerization tendency characterization threshold value E2,

[0077] If E>E2, the shear emulsification speed is determined to be the first shear emulsification speed c1, and c1=0.4c0 is set;

[0078] If E1≤E≤E2, the shear emulsification speed is determined to be the second shear emulsification speed c2, and c2=0.3c0 is set;

[0079] If E<E1, the shear emulsification speed is determined to be the third shear emulsification speed c3, and c3=0.2c0 is set;

[0080] Among them, c0 represents the standard shear emulsification rate, E1=1.3E0, E2=1.5E0.

[0081] The additive polymerization tendency characterization coefficient is compared with the first additive polymerization tendency characterization threshold value E1 and the second additive polymerization tendency characterization threshold value E2, the shear emulsification speed and the shear emulsification time.

[0082] If E>E2, the shear emulsification time is determined to be the first shear emulsification time q1, and q1=0.3q0 is set;

[0083] If E1≤E≤E2, the shear emulsification time is determined to be the second shear emulsification time c2, and q2=0.2q0 is set;

[0084] If E<E1, the shear emulsification time is determined to be the third shear emulsification time c3, and q3=0.1q0 is set;

[0085] Among them, q0 represents the standard shear emulsification time, E1=1.3E0, E2=1.5E0.

[0086] E0 represents the standard value of the aggregation tendency characterization coefficient, and E0 is selected within the interval [0.5, 1].

[0087] Specifically, in step S4, the process of obtaining the surface image of the emulsion, extracting the distribution of the aggregation features in the surface image, and calculating the dispersion characterization value in combination with the chromaticity change of the emulsion includes:

[0088] Collecting the contours of additive particles in the surface image;

[0089] determining as aggregate features the contours of additive particles having an area greater than a predetermined aggregate area threshold;

[0090] determining the ratio of the total area of ​​each polymeric feature to the total area of ​​the liquid surface;

[0091] According to formula (2), the dispersion characterization value is calculated:

[0092] (2)

[0093] In formula (2), W represents the dispersion characterization value, P represents the ratio of the total area of ​​the aggregated features to the total area of ​​the liquid surface, P0 represents the preset standard ratio threshold, α represents the weight coefficient of the ratio of the total area of ​​the aggregated features to the total area of ​​the liquid surface, N represents the chromaticity change, N0 represents the preset chromaticity change threshold, and β represents the chromaticity change weight coefficient.

[0094] Specifically, in this embodiment, the standard ratio threshold value P0 of the total area of ​​the aggregate features to the total area of ​​the liquid surface and the threshold value N0 of the chromaticity change are pre-set, and the surface images of the emulsion during several shear emulsification processes are obtained, and the total area and chromaticity values ​​of each aggregate feature are simultaneously obtained. The average value ∆P0 of the ratio of the total area of ​​the aggregate features to the total area of ​​the liquid surface and the average value ∆N0 of the chromaticity change are solved, and it is set that P0=c1×∆P0, ∆N0=c2×∆N0, z1 represents the first offset coefficient, z2 represents the second offset coefficient, 1.2<z1<1.3, 1.15<z2<1.2.

[0095] α is 0.65 and β is 0.35.

[0096] The scheduled period can be selected within the interval [5min, 10min].

[0097] Specifically, in step S4, determining whether the shear emulsification process has entered a stable dispersion moment includes:

[0098] If the dispersion characterization value in the surface image is less than a preset dispersion characterization standard threshold, it is determined that a stable dispersion moment has been entered.

[0099] The standard dispersion characterization threshold H0 is selected in the interval [0.85, 0.95].

[0100] In particular, the present invention determines whether the shear emulsification process has entered a stable dispersion moment by calculating a dispersion characterization value based on the distribution of polymerization features in the surface image and the change in the chromaticity of the emulsion. In actual situations, some additive particles tend to aggregate and float up at the initial stage of shear emulsification, resulting in poor shear emulsification. As the shear emulsification proceeds, the volume of the additive particles after aggregation will decrease, but some additive particles still aggregate, affecting the shear emulsification process. In addition, the present application considers determining the distribution of polymerization features through surface images to characterize the dispersion of the additive particle aggregates. In addition, since the base oil will undergo a chromaticity change as the additive particles melt, the present application considers calculating a dispersion characterization value based on the above phenomenon to determine whether the shear emulsification process has entered a stable dispersion moment, adaptively performing ultrasonic treatment on the emulsion and adjusting the emulsification parameters, thereby saving energy, optimizing the process, ensuring efficiency, improving the dispersibility of the additive particles, making the additive particles evenly dispersed in the base oil, and enhancing the stability of the internal combustion engine oil.

[0101] Specifically, in step S4, based on whether the shear emulsification process has entered a stable dispersion moment, a specific processing method for shear emulsification is selected, including:

[0102] If the dispersion reaches a stable state, the corresponding emulsification parameters are maintained to complete the shear emulsification.

[0103] If the stable dispersion moment has not been reached, it is determined whether to perform ultrasonic treatment on the emulsion and adjust the emulsification parameters based on the dispersion characteristic value.

[0104] Specifically, in step S4, determining whether to perform ultrasonic treatment on the emulsion based on the dispersion characterization value includes:

[0105] If the dispersion characterization value is greater than or equal to a preset dispersion characterization standard threshold value, it is determined that the emulsion is to be subjected to ultrasonic treatment.

[0106] Specifically, in step S4, adjusting the emulsification parameters based on the dispersion characterization value includes:

[0107] Increasing the emulsification parameter, the increase in the emulsification parameter is positively correlated with the dispersion characterization value.

[0108] In this embodiment, optionally,

[0109] The dispersion characterization value is compared with the first dispersion characterization threshold value H1 and the second dispersion characterization threshold value H2, and the shear emulsification speed and the shear emulsification time are measured.

[0110] If H>H2, the increase value of the shear emulsification rate is determined to be the first shear emulsification rate increase value z1, and z1=0.3z0 is set;

[0111] If H1≤H≤H2, the increase value of the emulsification speed is determined to be the second adjustment value z2, and z2=0.2z0 is set;

[0112] If H

[0113] Among them, z0 represents the current shear emulsification speed, H1=1.2H0, H2=1.3H0.

[0114] The dispersion characterization value is compared with a first dispersion characterization threshold H1 and a second dispersion characterization threshold H2,

[0115] If H>H2, the adjustment value of the shear emulsification time is determined to be the first adjustment value u1, and u1=0.3u0;

[0116] If H1≤H≤H2, the adjustment value of the shear emulsification time is determined to be the second adjustment value u2, and u2=0.2u0 is set;

[0117] If H

[0118] Among them, z0 represents the initial shear emulsification time, H1=1.2H0, H2=1.3H0.

[0119] Specifically, the high-clean and energy-saving internal combustion engine oil prepared according to the high-clean and energy-saving internal combustion engine oil preparation method comprises: base oil and additives,

[0120] The base oil includes poly-alpha-olefin, and the additives include calcium alkyl phenoxide sulphurization and zinc dialkyl dithiophosphate.

[0121] Specifically, polyalphaolefin synthetic oil is made through complex chemical reactions, with neatly arranged molecules, high viscosity index and excellent antioxidant properties, thermal stability, low volatility and high cleanliness. The additives include anti-wear agents such as zinc dialkyl dithiophosphate and detergent dispersants such as calcium sulfide alkylphenol.

[0122] ​​So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A method for preparing a highly clean and energy-saving internal combustion engine oil, characterized in that: include: Step S1, pre-configuring the raw materials of the internal combustion engine oil, wherein the pre-configuration includes configuring the base oil of the internal combustion engine oil and required additives; Step S2, preliminarily preheating and mixing the pre-configured raw material of the internal combustion engine oil, including heating and stirring the raw material of the internal combustion engine oil, and obtaining a surface image of the mixed liquid after the heating and stirring is completed and an average force value of the stirring rod during the heating and stirring process; Step S3, determining the dispersion density and concentrated area of ​​the additive particles based on the surface image, and calculating the additive aggregation tendency characterization coefficient in combination with the average force value; Step S4, determining the emulsification parameters based on the additive polymerization tendency characterization coefficient, pouring the preliminarily preheated mixed solution into an emulsification tank for shear emulsification, wherein: After a predetermined period, the shear emulsification is stopped, the surface image of the emulsion is obtained to extract the distribution of the polymerization features in the surface image, and the dispersion characterization value is calculated in combination with the chromaticity change of the emulsion to determine whether the shear emulsification process has entered a stable dispersion moment, and whether to perform ultrasonic treatment on the emulsion and adjust the emulsification parameters before shear emulsification based on the dispersion characterization value; Or, maintain the corresponding emulsification parameters to complete shear emulsification; Wherein, the emulsification parameters include shear emulsification speed and shear emulsification time; In step S3, the process of determining the dispersion density and the concentration area includes: Collecting the contours of additive particles in the surface image; Determine the two-dimensional coordinates of the contour of each additive particle, determine the adjacent distance between the contour of each additive particle and another contour of the nearest additive, and determine the variance of the adjacent distance as the dispersion density; Calculate the average area of ​​each additive profile, and determine the average area as the concentrated area; In step S3, the additive polymerization tendency characterization coefficient is calculated according to formula (1): （1） In formula (1), G represents the coefficient of characterization of the aggregation tendency of the additive, M represents the dispersion density, M0 represents the preset dispersion density standard threshold, S represents the concentration area, S0 represents the preset concentration area standard threshold, n represents the number of times the force value is obtained, Fi represents the force value of the stirring rod detected for the i-th time, ∆F represents the average force value of the stirring rod during the heating and stirring process, and F0 represents the preset force threshold; In step S4, the process of obtaining the surface image of the emulsion, extracting the distribution of the aggregation features in the surface image, and calculating the dispersion characterization value in combination with the chromaticity change of the emulsion includes: Collecting the contours of additive particles in the surface image; determining as aggregate features the contours of additive particles having an area greater than a predetermined aggregate area threshold; determining the ratio of the total area of ​​each polymeric feature to the total area of ​​the liquid surface; According to formula (2), the dispersion characterization value is calculated: （2） In formula (2), W represents the dispersion characterization value, P represents the ratio of the total area of ​​the aggregated features to the total area of ​​the liquid surface, P0 represents the preset standard ratio threshold, α represents the weight coefficient of the ratio of the total area of ​​the aggregated features to the total area of ​​the liquid surface, N represents the chromaticity change, N0 represents the preset chromaticity change threshold, and β represents the chromaticity change weight coefficient.

2. The method for preparing highly clean and energy-saving internal combustion engine oil according to claim 1, characterized in that: In the step S4, determining the emulsification parameter based on the additive polymerization tendency characterization coefficient includes: The determined emulsification parameters are positively correlated with the coefficient characterizing the polymerization tendency of the additive.

3. The method for preparing highly clean and energy-saving internal combustion engine oil according to claim 1, characterized in that: In step S4, determining whether the shear emulsification process has entered a stable dispersion moment includes: If the dispersion characterization value in the surface image is less than a preset dispersion characterization standard threshold, it is determined that a stable dispersion moment has been entered.

4. The method for preparing highly clean and energy-saving internal combustion engine oil according to claim 1, characterized in that: In step S4, based on whether the shear emulsification process has entered a stable dispersion moment, a specific processing method for selecting shear emulsification includes: If the dispersion reaches a stable state, the corresponding emulsification parameters are maintained to complete the shear emulsification. If the stable dispersion moment has not been reached, it is determined whether to perform ultrasonic treatment on the emulsion and adjust the emulsification parameters based on the dispersion characteristic value.

5. The method for preparing highly clean and energy-saving internal combustion engine oil according to claim 1, characterized in that: In the step S4, determining whether to perform ultrasonic treatment on the emulsion based on the dispersion characterization value includes: If the dispersion characterization value is greater than or equal to a preset dispersion characterization standard threshold value, it is determined that the emulsion is to be subjected to ultrasonic treatment.

6. The method for preparing highly clean and energy-saving internal combustion engine oil according to claim 1, characterized in that: In step S4, adjusting the emulsification parameters based on the dispersion characterization value includes: Increasing the emulsification parameter, the increase in the emulsification parameter is positively correlated with the dispersion characterization value.

7. A high-clean and energy-saving internal combustion engine oil prepared by the method for preparing high-clean and energy-saving internal combustion engine oil according to any one of claims 1 to 6, characterized in that: Including: base oil and additives, The base oil includes poly-alpha-olefin, and the additive includes sulfurized alkyl phenate calcium and dialkyl dithiophosphate zinc.

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