Electronic throttle blade profile optimization design method, device and equipment

Abstract

The application is suitable for the technical field of electronic throttle blade, and particularly relates to an electronic throttle blade profile optimization design method, device and equipment. The method comprises the following steps: determining a corresponding electronic throttle blade to-be-optimized curvature region according to different working conditions of an engine; determining a correlation between curvature parameters and air flow parameters of the electronic throttle blade front and back surfaces in the to-be-optimized curvature region; optimizing the curvature parameters of the to-be-optimized curvature region of the electronic throttle blade front surface according to a first correlation and a second correlation; optimizing the curvature parameters of the to-be-optimized curvature region of the electronic throttle blade back surface according to a third correlation and a fourth correlation; and determining the flow guide groove parameters of the electronic throttle blade front and back surfaces according to the optimized curvature parameters of the electronic throttle blade front and back surfaces. Therefore, the method provided by the application can solve the problems of large intake air fluctuation at small opening and airflow turbulence at large opening of the existing electronic throttle blade.

Description

Technical Field

[0001] This application belongs to the field of electronic throttle plate technology, and particularly relates to the method, device and equipment for optimizing the design of electronic throttle plate profile. Background Technology

[0002] Mainstream electronic throttle valve plates include symmetrical bevel type, elliptical disc type, and disc type. Among them, the symmetrical bevel type valve plate has two symmetrical bevels on its outer side, with a smooth transition at the intersection, so there is no need to distinguish the installation direction; the elliptical disc type valve plate is often paired with a cylindrical throat, whose long diameter coincides with the rotation axis of the throttle shaft, and can form a gap with the throat when closed to prevent scratches; the disc type valve plate can be adapted to the elliptical cylindrical throat, with the corresponding short diameter of the throat coinciding with the rotation axis of the throttle shaft.

[0003] In existing technologies, at a small throttle opening, the cross-sectional area of ​​the throttle body is extremely small. Even a slight change in the throttle body angle at this point can significantly alter the effective area of ​​the intake passage. Furthermore, the gap between the throttle body and the throat is already narrow, and the fuel-air mixture generated during engine operation easily accumulates here, forming carbon deposits. These carbon deposits alter the shape of the gap, making the intake passage irregular and causing uneven airflow. Traditional throttle body plates are mostly simple disc-shaped or symmetrical structures. At a large opening, the channel formed by the throttle body and the valve body becomes irregular. When high-speed airflow passes through both sides of the throttle body, airflow separation easily occurs, creating numerous eddies and turbulence. Therefore, existing electronic throttle body plates suffer from large fluctuations in intake volume at small openings and turbulent airflow at large openings. Summary of the Invention

[0004] This application provides a method, apparatus, and device for optimizing the design of electronic throttle body profiles, which can solve the problems of large fluctuations in intake volume at small openings and turbulent airflow at large openings in existing electronic throttle bodies.

[0005] In a first aspect, embodiments of this application provide a method for optimizing the design of electronic throttle body profiles, including: The corresponding curvature region to be optimized for the electronic throttle plate is determined according to different engine operating conditions; wherein, the operating conditions are idling, acceleration, partial load or deceleration fuel cut-off, and the curvature region to be optimized includes the inner region of the electronic throttle plate near the pivot and / or the outer region away from the pivot. The correlation between the curvature parameters and airflow parameters of the front and back surfaces of the electronic throttle plate in the region of curvature to be optimized is determined; wherein, the curvature parameters include the curvature of the inner region and the curvature of the outer region, the airflow parameters include airflow resistance parameters and air distribution parameters, the airflow resistance parameters are used to reflect the pressure loss when air flows through the throttle plate, the air distribution parameters are used to reflect the uniformity of the airflow at the throttle outlet, and the correlation includes a first correlation between the curvature parameters of the front surface of the electronic throttle plate and the airflow resistance parameters, a second correlation between the curvature parameters of the front surface of the electronic throttle plate and the air distribution parameters, a third correlation between the curvature parameters of the back surface of the electronic throttle plate and the airflow resistance parameters, and a fourth correlation between the curvature parameters of the back surface of the electronic throttle plate and the air distribution parameters. The curvature parameters of the curvature region to be optimized on the front of the electronic throttle plate are optimized based on the first correlation and the second correlation. The curvature parameters of the curvature region to be optimized on the reverse side of the electronic throttle plate are optimized based on the third and fourth correlation relationships. The parameters of the guide grooves on the front and back of the electronic throttle plate are determined based on the optimized curvature parameters of the front and back surfaces; wherein, the guide groove parameters include the shape and position of the multi-level guide grooves on the surface.

[0006] The technical solutions described in this application embodiment have at least the following technical effects: The electronic throttle plate profile optimization design method provided in this application determines the corresponding curvature region to be optimized for the electronic throttle plate based on different engine operating conditions; determines the correlation between the curvature parameters of the front and back sides of the electronic throttle plate in the curvature region to be optimized and the airflow parameters; optimizes the curvature parameters of the front side of the electronic throttle plate according to the first and second correlations; optimizes the curvature parameters of the back side of the electronic throttle plate according to the third and fourth correlations; and determines the guide groove parameters of the front and back sides of the electronic throttle plate based on the optimized curvature parameters. Therefore, the electronic throttle plate profile optimization design method provided in this application can optimize the inner curvature of the front side at small openings through the first and second correlations, which can stabilize the airflow resistance on the front side; and adjust the inner curvature of the back side by using the third and fourth correlations, which can balance the pressure on the back side and avoid excessive pressure on one side causing slight vibration of the valve plate, thereby preventing fluctuations in the cross-sectional area of ​​the intake passage. At large openings, optimizing the curvature of the outer front side guides airflow smoothly across the front, reducing edge eddies; optimizing the curvature of the outer back side prevents backflow on the back side. Simultaneously, a reasonable curvature design reduces overall flow resistance, ensuring uniform airflow velocity and preventing turbulence caused by excessively high or low velocities in some areas. Furthermore, the guide grooves further refine the airflow path at small openings and streamline high-speed airflow at large openings. In addition, optimizing the curvature of the valve plate's front and back surfaces reduces surface roughness and dead zones, while the negative pressure generated by the airflow carries away adhering oil mist and impurities, reducing the deposition rate of carbon deposits on the valve plate edges and both sides.

[0007] In one possible implementation of the first aspect, optimizing the curvature parameters of the region of curvature to be optimized on the front side of the electronic throttle plate according to the first correlation and the second correlation includes: When the air resistance parameter meets the first preset range, the first range of values ​​for the curvature parameter of the front of the electronic throttle plate under different operating conditions is obtained according to the first correlation. When the air distribution parameters meet the second preset range, a second range of values ​​for the curvature parameter of the electronic throttle plate front is determined based on the second correlation under different operating conditions. Based on each of the first value ranges and each of the second value ranges, a first optimized value for the curvature parameter of the front surface of the electronic throttle valve is determined; wherein, the first optimized value includes the curvature optimized value of the inner region and the curvature optimized value of the outer region.

[0008] In one possible implementation of the first aspect, determining a first optimized value for the curvature parameter of the front surface of the electronic throttle plate based on each of the first value ranges and each of the second value ranges includes: When it is determined that the curvature region to be optimized includes the inner region, the first parameter range of the first airflow parameter is determined according to the first value range and the second value range of the corresponding operating conditions; wherein, the first airflow parameter includes the inner flow cross-section width and the inner airflow velocity; When it is determined that the curvature region to be optimized includes the outer region, the second parameter range of the second airflow parameter is determined according to the first value range and the second value range of the corresponding operating conditions; wherein, the second airflow parameter includes the outer flow area and the outer airflow turbulence intensity; The first optimized value of the curvature parameter of the front surface of the electronic throttle valve is determined based on the first parameter range and the second parameter range.

[0009] In one possible implementation of the first aspect, optimizing the curvature parameters of the region of curvature to be optimized on the reverse side of the electronic throttle plate according to the third and fourth correlations includes: When the air flow resistance parameter meets the third preset range, the third range of values ​​for the curvature parameter of the electronic throttle plate under different operating conditions is obtained according to the third correlation. When the air distribution parameters meet the fourth preset range, the fourth range of values ​​for the curvature parameter of the electronic throttle plate under different operating conditions is determined based on the fourth correlation. Based on each of the third and fourth value ranges, a second optimized value for the curvature parameter of the reverse side of the electronic throttle plate is determined; wherein, the second optimized value includes the curvature optimized value of the inner region and the curvature optimized value of the outer region.

[0010] In one possible implementation of the first aspect, the method further includes: The curvature parameters of the region to be optimized on the reverse side of the electronic throttle valve are optimized based on the curvature parameters of the region to be optimized on the front side of the optimized electronic throttle valve.

[0011] In one possible implementation of the first aspect, determining the guide groove parameters of the front and back surfaces of the electronic throttle plate based on the optimized curvature parameters of the front and back surfaces includes: The parameters of the guide grooves on the front and back of the electronic throttle plate are determined based on the target airflow under different operating conditions and the optimized curvature parameters of the front and back of the electronic throttle plate.

[0012] In one possible implementation of the first aspect, the method further includes: The transition region is determined based on the inner region and the outer region; The curvature of the transition region is determined based on the optimized curvature parameters of the front and back surfaces of the electronic throttle plate.

[0013] In one possible implementation of the first aspect, the method further includes: The gap between the edge of the electronic throttle body and the valve body is determined based on the curvature of the outer region of the front and back sides of the optimized electronic throttle body. The diameter of the throttle plate is determined based on the gap.

[0014] Secondly, embodiments of this application provide an electronic throttle body profile optimization design device, comprising: The optimization curvature region module is used to determine the corresponding optimization curvature region of the electronic throttle plate according to different engine operating conditions; wherein, the operating conditions are idling, acceleration, partial load or deceleration fuel cut-off, and the optimization curvature region includes the inner region of the electronic throttle plate near the rotating shaft and / or the outer region away from the rotating shaft. The correlation module is used to determine the correlation between the curvature parameters and airflow parameters of the front and back sides of the electronic throttle plate in the region of curvature to be optimized; wherein, the curvature parameters include the curvature of the inner region and the curvature of the outer region, the airflow parameters include airflow resistance parameters and air distribution parameters, the airflow resistance parameters are used to reflect the pressure loss when air flows through the throttle plate, the air distribution parameters are used to reflect the uniformity of the airflow at the throttle outlet, and the correlation includes a first correlation between the curvature parameters and airflow resistance parameters of the front side of the electronic throttle plate, a second correlation between the curvature parameters and air distribution parameters of the front side of the electronic throttle plate, a third correlation between the curvature parameters and airflow resistance parameters of the back side of the electronic throttle plate, and a fourth correlation between the curvature parameters and air distribution parameters of the back side of the electronic throttle plate. The first optimization module is used to optimize the curvature parameters of the curvature region to be optimized on the front side of the electronic throttle plate according to the first correlation relationship and the second correlation relationship; The second optimization module is used to optimize the curvature parameters of the curvature region to be optimized on the reverse side of the electronic throttle plate according to the third and fourth correlation relationships. The guide groove parameter module is used to determine the guide groove parameters of the front and back surfaces of the electronic throttle plate based on the optimized curvature parameters of the front and back surfaces; wherein, the guide groove parameters include the shape and position of the multi-level guide grooves on the surface.

[0015] Thirdly, embodiments of this application provide an electronic throttle body profile optimization design device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method as described in any one of the first aspects above.

[0016] Fourthly, embodiments of this application provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements the method described in any of the first aspects above.

[0017] Fifthly, embodiments of this application provide a computer program product that, when run on an electronic throttle body profile optimization design device, causes the electronic throttle body profile optimization design device to execute the method described in any one of the first aspects above.

[0018] It is understood that the beneficial effects of the second to fifth aspects mentioned above can be found in the relevant descriptions in the first aspect mentioned above, and will not be repeated here. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a flowchart illustrating an embodiment of the electronic throttle plate profile optimization design method provided in this application; Figure 2 This is a schematic diagram illustrating the implementation process of steps S300, S330, S400, and S500 in the electronic throttle plate profile optimization design method provided in an embodiment of this application. Figure 3 This is a schematic diagram of the curves of curvature parameters and airflow parameters in the electronic throttle plate profile optimization design method provided in an embodiment of this application; Figure 4 This is a schematic diagram illustrating the optimization effect under different operating conditions in the electronic throttle plate profile optimization design method provided in an embodiment of this application; Figure 5 This is a schematic diagram of the electronic throttle plate profile optimization design device provided in the embodiments of this application; Figure 6 This is a schematic diagram of the structure of the electronic throttle plate profile optimization design device provided in the embodiments of this application. Detailed Implementation

[0021] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0022] It should be understood that, when used in this application specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or a collection thereof.

[0023] It should also be understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0024] As used in this application specification and the appended claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrases "if determined" or "if detected [the described condition or event]" may be interpreted, depending on the context, as meaning "once determined," "in response to determination," "once detected [the described condition or event]," or "in response to detection [the described condition or event]."

[0025] Furthermore, in the description of this application and the appended claims, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0027] In related technologies, when the throttle opening is small, the flow cross-sectional area of ​​the throttle body is extremely small. Even a slight change in the throttle body angle at this point can significantly alter the effective area of ​​the intake passage. Furthermore, the gap between the throttle body and the throat is already narrow, and the fuel-air mixture generated during engine operation easily accumulates here, forming carbon deposits. These carbon deposits alter the shape of the gap, making the intake passage irregular and causing uneven airflow. Traditional throttle body plates are mostly simple disc-shaped or symmetrical structures. When the opening is large, the channel formed by the throttle body and the valve body becomes irregular. When high-speed airflow passes through both sides of the throttle body, airflow separation easily occurs, forming numerous eddies and turbulence. Therefore, existing electronic throttle body plates suffer from large fluctuations in intake volume at small openings and turbulent airflow at large openings.

[0028] To address the aforementioned problems, this application provides a method, apparatus, and device for optimizing the design of an electronic throttle plate profile. In this method, the curvature region to be optimized for the corresponding electronic throttle plate is determined based on different engine operating conditions; the correlation between the curvature parameters of the front and back sides of the electronic throttle plate in the region to be optimized and the airflow parameters is determined; the curvature parameters of the front side of the electronic throttle plate are optimized based on a first and a second correlation; the curvature parameters of the back side of the electronic throttle plate are optimized based on a third and a fourth correlation; and the guide groove parameters of the front and back sides of the electronic throttle plate are determined based on the optimized curvature parameters. Therefore, the electronic throttle plate profile optimization design method provided in this application can optimize the inner curvature of the front side at small openings through the first and second correlations, allowing for stable airflow resistance on the front side; and adjust the inner curvature of the back side using the third and fourth correlations, balancing the pressure on the back side and preventing excessive pressure on one side from causing slight vibration of the valve plate, thereby preventing fluctuations in the cross-sectional area of ​​the intake passage. At large openings, optimizing the curvature of the outer front side guides airflow smoothly across the front, reducing edge eddies; optimizing the curvature of the outer back side prevents backflow on the back side. Simultaneously, a reasonable curvature design reduces overall flow resistance, ensuring uniform airflow velocity and preventing turbulence caused by excessively high or low velocities in some areas. Furthermore, the guide grooves further refine the airflow path at small openings and streamline high-speed airflow at large openings. In addition, optimizing the curvature of the valve plate's front and back surfaces reduces surface roughness and dead zones, while the negative pressure generated by the airflow carries away adhering oil mist and impurities, reducing the deposition rate of carbon deposits on the valve plate edges and both sides.

[0029] The electronic throttle plate profile optimization design method provided in this application embodiment can be applied to an electronic throttle plate profile optimization design device. In this case, the electronic throttle plate profile optimization design device is the executing subject of the electronic throttle plate profile optimization design method provided in this application embodiment. This application embodiment does not impose any restrictions on the specific type of electronic throttle plate profile optimization design device.

[0030] For example, the equipment for optimizing the design of electronic throttle body profiles can be an industrial computer, programmable logic controller, embedded control system, distributed control system, tablet computer, laptop computer, ultra-mobile personal computer (UMPC), netbook, desktop computer, laptop computer, handheld computing device, etc., but is not limited to these.

[0031] To better understand the electronic throttle body profile optimization design method provided in this application embodiment, the specific implementation process of the electronic throttle body profile optimization design method provided in this application embodiment will be described by way of example below.

[0032] Figure 1 This paper presents a schematic flowchart of an electronic throttle body profile optimization design method provided in an embodiment of this application. The electronic throttle body profile optimization design method includes: S100 determines the corresponding curvature region to be optimized for the electronic throttle plate based on different engine operating conditions. These operating conditions include idling, acceleration, partial load, or deceleration fuel cut-off. The curvature region to be optimized includes the inner region of the electronic throttle plate near the pivot and / or the outer region away from the pivot.

[0033] It is understandable that the inner area of ​​the electronic throttle plate near the pivot and the outer area away from the pivot can be determined by dividing the electronic throttle plate proportionally or according to a preset threshold.

[0034] For example, airflow distribution data under different operating conditions can be obtained through experimental testing or CFD (Computational Fluid Dynamics) simulation. Based on the airflow distribution data, the curvature region to be optimized for the electronic throttle plate corresponding to different engine operating conditions can be determined. For instance, under idling conditions, the throttle opening is small (approximately 3%-5%), the airflow velocity is low, and turbulence is easily generated. At this time, the curvature of the inner region (closer to the pivot) needs to be optimized to reduce turbulence losses. Under acceleration conditions, the throttle opening increases (20%-80%), and the airflow velocity in the outer region (far from the pivot) is high. The curvature of the outer region needs to be optimized to reduce flow resistance. A laser Doppler velocimeter (LDV) can be used to measure the airflow velocity field under various operating conditions on a real engine test bench, or three-dimensional flow field simulation can be performed using ANSYS Fluent software to extract the pressure distribution and velocity gradient data on the throttle plate surface. Then, the region to be optimized can be determined through statistical analysis.

[0035] S200, determine the correlation between the curvature parameters and airflow parameters of the front and back sides of the electronic throttle plate in the region of curvature to be optimized. The curvature parameters include the curvature of the inner and outer regions, and the airflow parameters include air resistance parameters and air distribution parameters. The air resistance parameter reflects the pressure loss when air flows through the throttle plate, and the air distribution parameter reflects the uniformity of the airflow at the throttle outlet. The correlations include a first correlation between the curvature parameters of the front side of the electronic throttle plate and the air resistance parameters, a second correlation between the curvature parameters of the front side of the electronic throttle plate and the air distribution parameters, a third correlation between the curvature parameters of the back side of the electronic throttle plate and the air resistance parameters, and a fourth correlation between the curvature parameters of the back side of the electronic throttle plate and the air distribution parameters.

[0036] It is understandable that air flow resistance parameter refers to pressure loss or the ratio of pressure loss to airflow, while air distribution parameter refers to airflow uniformity, which can be measured by the standard deviation of airflow velocity.

[0037] For example, regression analysis or machine learning models can be used to establish the correlation between curvature parameters and airflow parameters. For instance, different curvature combinations can be designed through orthogonal experiments (e.g., inner curvature radii R1=50mm, R2=60mm, outer curvature radii R3=80mm, R4=90mm), and the corresponding airflow resistance parameters (e.g., ΔP / Q, the ratio of pressure loss to airflow) and airflow uniformity (measured by the standard deviation of airflow velocity) can be measured in a wind tunnel experiment. The correlation between curvature parameters and flow resistance and uniformity can then be obtained using multiple linear regression or random forest algorithms. For example, the first correlation can be obtained through regression analysis: airflow resistance parameter = 0.02 × R 内 +0.01×R 外 +Constant term, second correlation: Standard deviation of airflow velocity = 0.01 × R 内 +0.005×R 外 + constant term.

[0038] S300 optimizes the curvature parameters of the curvature region to be optimized on the front of the electronic throttle plate based on the first and second correlation relationships.

[0039] For example, the curvature parameters of the region to be optimized on the front of the electronic throttle plate can be optimized using a gradient descent algorithm or a genetic algorithm based on the first and second correlation relationships (e.g., Figure 3 (As shown). For example, the objective function is to minimize the weighted sum of the air resistance parameter and the standard deviation of airflow uniformity (e.g., each with a weight of 0.5). The objective function value is calculated by iteratively adjusting the inner and outer curvature parameters, and the parameters are updated according to the gradient direction. For example, the initial parameter R... 内 =50mm, R 外=80mm, objective function value is 0.25; after multiple iterations, R 内 =55mm, R 外 =85mm, the objective function value is reduced to 0.18.

[0040] S400 optimizes the curvature parameters of the curvature region to be optimized on the reverse side of the electronic throttle plate based on the third and fourth correlation relationships.

[0041] For example, the curvature parameters of the curvature region to be optimized on the reverse side of the electronic throttle plate can be optimized using a gradient descent algorithm or a genetic algorithm based on the third and fourth correlation relationships.

[0042] S500 determines the guide groove parameters on the front and back of the electronic throttle plate based on the optimized curvature parameters of the front and back surfaces. These guide groove parameters include the shape and position of the multi-level guide grooves on the surface.

[0043] For example, the shape and location of the guide channel can be designed based on the optimized curvature parameters using geometric modeling software (such as SolidWorks) or fluid dynamics simulation (such as ANSYS Fluent). The shape of the guide channel is typically streamlined or V-shaped, and its location matches the optimized curvature region. For instance, a V-shaped guide channel with a depth of 2 mm and a width of 5 mm can be designed in the optimized inner region (R1=55 mm), and a streamlined guide channel with a depth of 3 mm and a width of 8 mm can be designed in the outer region (R3=85 mm).

[0044] In one possible implementation, please refer to Figure 2 S300, optimizes the curvature parameters of the curvature region to be optimized on the front of the electronic throttle plate according to the first and second correlation relationships, including: S310, when the air flow resistance parameter meets the first preset range, the first value range of the curvature parameter of the front of the electronic throttle plate under different working conditions is obtained according to the first correlation relationship.

[0045] For example, air resistance parameters (such as pressure loss ΔP) on the front of the electronic throttle can be obtained through wind tunnel experiments or CFD simulations under four operating conditions: idling, acceleration, partial load, and deceleration with fuel cut-off. For instance, ΔP = 0.3 kPa under idling and ΔP = 0.8 kPa under acceleration. A primary correlation between the front curvature parameters (inner radius of curvature R1, outer radius of curvature R2) and the air resistance parameters can be established using multiple linear regression or machine learning models (such as random forest). For example, ΔP = 0.02. R1+0.015 R2+C, where C is a constant term. Based on engine performance requirements, a first preset range for air resistance parameters is set (e.g., ΔP∈[0.2, 0.5]kPa). Substituting the upper and lower limits of ΔP into the regression model, the system of inequalities is solved to obtain the first range of values ​​for R1 and R2.

[0046] S320, when the air distribution parameters meet the second preset range, determines the second range of values ​​for the curvature parameters of the electronic throttle plate under different operating conditions based on the second correlation.

[0047] For example, under the same operating conditions, the airflow uniformity (e.g., the standard deviation of airflow velocity σ) at the throttle outlet can be obtained using particle image velocimetry (PIV) or CFD simulation. For instance, under acceleration conditions, σ = 0.3 m / s. A second correlation is established between the front curvature parameter and the airflow uniformity. For example, σ = 0.01. R1+0.008 R2+D, where D is a constant term. Based on the engine combustion efficiency requirements, the allowable range of σ is set (e.g., σ∈[0.2, 0.4]m / s). Substituting the upper and lower limits of σ into the regression model, the system of inequalities is solved to obtain the second range of values ​​for R1 and R2.

[0048] S330, based on each first value range and each second value range, determines the first optimized value of the curvature parameter of the front of the electronic throttle valve. The first optimized value includes the curvature optimized value of the inner region and the curvature optimized value of the outer region.

[0049] For example, the intersection of each first value range and its corresponding second value range can be taken. For instance, the intersection of R1∈[50,55]mm in the first value range and R1∈[48,53]mm in the second value range under idling conditions is R1∈[50,53]mm. Using airflow resistance parameters and airflow uniformity as optimization objectives, the first optimized value of the curvature parameter on the front of the electronic throttle plate is determined using a weighted summation method or the Pareto front method. For example, with weights allocated as 0.6 for airflow resistance parameter and 0.4 for airflow uniformity, the overall score is calculated as: Score=0.6. +0.4 The parameter combination with the highest score is selected as the first optimized value of the curvature parameter.

[0050] Through steps S310 to S330, flow resistance and uniformity are optimized respectively, ensuring the throttle valve meets performance requirements under different operating conditions. By distinguishing between the inner and outer regions, vortex and high-speed airflow issues are specifically addressed. A multi-objective optimization algorithm balances the conflict between flow resistance and uniformity, achieving optimal overall performance, with optimization results as shown below. Figure 4 As shown.

[0051] Optionally, please refer to Figure 2 S330, based on each first value range and each second value range, determines the first optimized value of the curvature parameter of the front of the electronic throttle valve, including: S331, when it is determined that the curvature region to be optimized includes the inner region, the first parameter range of the first airflow parameter is determined according to the first value range and the second value range of the corresponding operating conditions. The first airflow parameter includes the inner flow cross-sectional width and the inner airflow velocity.

[0052] For example, the throttle body can be divided into an inner region (closer to the axis, radius ranging from 0-30% of the throttle diameter) and an outer region (far from the axis, radius ranging from 30%-100%), centered on the electronic throttle body pivot. For instance, if the throttle diameter is 50mm, the radius of the inner region is 0-15mm. When the curvature region to be optimized includes the inner region, the inner flow cross-sectional width (W) in the first airflow parameter can be constructed. in ) and radius of curvature (R) in A correlation model between W and throttle opening (θ), for example, W in =R in s in ( 2)−d gap , where d gap The gap between the throttle body and the pipe wall (e.g., 0.5mm); the inner airflow velocity (V) in the first airflow parameter is constructed. in ): Derived from mass flow rate ( ) and flow cross-sectional area (A in =W in The correlation model (where L is the axial length of the throttle body) is used, for example, V in = / (ρ A in ), where ρ is the air density (e.g., 1.2 kg / m³). Solving the system of inequalities by combining the above correlation model, the first range of values, and the second range of values ​​yields W. in and V in The range of the first parameter.

[0053] S332, assuming the curvature region to be optimized includes the outer region, the second parameter range of the second airflow parameter is determined based on the first and second value ranges of the corresponding operating conditions. The second airflow parameter includes the outer flow area and the outer airflow turbulence intensity.

[0054] For example, when it is determined that the curvature region to be optimized includes the outer region, the outer flow area (A) in the second airflow parameter can be constructed. out ): with radius of curvature (R)out The correlation model between A and throttle opening, for example, A out =π R 2 out (1-cos(2θ))−A gap , where A gap The gap area is 10 mm²; the turbulence intensity (Tu) of the outer airflow in the second airflow parameter is determined by a turbulence model (e.g., k-ε model). out Related to flow area and speed, for example, Tu out =0.16 Re −1 / 8 V out / V ref Where Re is the Reynolds number, and V ref Let 10 m / s be the reference speed. Solving the system of inequalities using the above correlation model, the first range of values, and the second range of values, yields A. out and Tu out The range of the second parameter.

[0055] S333, determine the first optimized value of the curvature parameter of the front of the electronic throttle plate based on the first parameter range and the second parameter range.

[0056] For example, the range of the first parameter and the range of the second parameter can be used as constraints to establish the curvature parameter (R). in R out The optimization model is: min(w1) f1(R in ,R out )+w2 f2(R in ,R out In this equation, f1 is the flow resistance loss function, f2 is the turbulence loss function, and w1 and w2 are weights (e.g., 0.6 and 0.4). A genetic algorithm or particle swarm optimization algorithm is used to search for the optimal solution within the curvature parameter range to obtain the first optimized value of the curvature parameter of the electronic throttle plate's front side.

[0057] Through steps S331 to S333, airflow parameter models are established for the inner and outer regions respectively, achieving differentiated design of "controlling vortices in the low-speed zone and suppressing turbulence in the high-speed zone". By coupling the inner width / velocity and the outer area / turbulence intensity, the contradiction between flow resistance and uniformity is resolved. By dynamically adjusting the curvature parameter range under operating conditions, the throttle valve can meet performance requirements under all operating conditions.

[0058] In one possible implementation, please refer to Figure 2S400, optimizes the curvature parameters of the region to be optimized on the reverse side of the electronic throttle plate based on the third and fourth correlation relationships, including: S410, under the condition that the air flow resistance parameter meets the third preset range, the third range of values ​​for the curvature parameter of the electronic throttle plate under different working conditions is obtained according to the third correlation.

[0059] For example, the inverse curvature parameters (inner radius of curvature) can be established through wind tunnel experiments or CFD simulations. Rin,反 outer radius of curvature R out,反 ) and airflow resistance parameters (such as pressure loss ΔP) 反 Regression models of ΔP. For example, ΔP 反 =0.018 R in,反 +0.012 R out,反 +C 反 , where C 反 This is a constant term, determined through fitting experimental data. Based on engine performance requirements, ΔP is set... 反 The third preset range (such as ΔP under idling conditions) 反 ∈[0.15,0.25]kPa), ΔP 反 Substituting the upper and lower limits into the regression model, we solve the system of inequalities to obtain R. in,反 and R out,反 The third range of values.

[0060] S420, under the condition that the air distribution parameters meet the fourth preset range, determines the fourth range of values ​​for the curvature parameters of the electronic throttle plate under different operating conditions based on the fourth correlation.

[0061] For example, the inverse curvature parameter and airflow uniformity (such as the standard deviation of airflow velocity σ) can be established. 反 Regression models of σ. For example, σ 反 =0.009R in,反 +0.007 R out,反 +D 反 Based on the engine combustion stability requirements, σ ​​is set. 反 The fourth preset range (such as σ under partial load conditions) 反 ∈[0.15,0.25]m / s). σ 反 Substituting the upper and lower limits into the regression model, we solve the system of inequalities to obtain R. in,反 and R out,反 The fourth range of values.

[0062] S430, based on each third and fourth value range, determines the second optimized value of the curvature parameter of the reverse side of the electronic throttle plate. The second optimized value includes the curvature optimized value for the inner region and the curvature optimized value for the outer region.

[0063] For example, the intersection of the third and fourth value ranges under the same operating conditions can be taken. For instance, R under idling conditions. in,反 The intersection is [55, 58] mm, R out,反 The intersection is [65, 68] mm. Using air resistance parameters and airflow uniformity as optimization objectives, the Pareto optimal solution is obtained by employing a weighted summation method or the NSGA-II algorithm to obtain the second optimized value of the curvature parameter of the electronic throttle plate's reverse side. For example, with weights allocated as air resistance parameter 0.7 and airflow uniformity 0.3, the optimization objective function is: min(0.7...). +0.3 ).

[0064] Through steps S410 to S430, the step-by-step optimization ensures that the curvature parameters of the reverse side meet the requirements for flow resistance and uniformity under idling and acceleration conditions. The curvature parameters of the inner and outer sides are optimized separately to balance airflow resistance and airflow uniformity, achieving a synergistic improvement in engine power and economy.

[0065] In one possible implementation, please refer to Figure 2 The methods also include: S600 optimizes the curvature parameters of the area to be optimized on the back of the electronic throttle valve based on the curvature parameters of the area to be optimized on the front of the optimized electronic throttle valve.

[0066] For example, the curvature optimization values ​​of the inner and outer regions of the reverse side of the electronic throttle plate can be optimized accordingly based on the curvature optimization values ​​of the inner and outer regions of the curvature parameters of the curvature region to be optimized on the front side of the electronic throttle plate. For example, R in,反 =a R in R out,反 =b R out Where a and b are empirical coefficients that can be determined through CFD simulation and finite element analysis, such as a=0.95, b=1.02.

[0067] Through the above step S600, the front curvature parameter is mapped to the back curvature parameter to achieve coordinated optimization of the airflow on both sides, which is beneficial to improving the uniformity of airflow.

[0068] In one possible implementation, please refer to Figure 2S500, based on the optimized curvature parameters of the front and back surfaces of the electronic throttle valve, determines the parameters of the guide grooves on the front and back surfaces of the electronic throttle valve, including: S510 determines the guide groove parameters of the front and back of the electronic throttle plate based on the target airflow under different operating conditions and the optimized curvature parameters of the front and back of the electronic throttle plate.

[0069] It is understandable that the parameters of the flow channel can include the number of channels N. slot , slot width W slot , groove depth D slot and groove angle θ slot .

[0070] For example, the target airflow range can be determined based on the target airflow under different operating conditions, allowing the guide channel parameters and curvature parameters to work synergistically to achieve the minimum pressure loss ΔPmin and the maximum airflow uniformity, i.e., the minimum airflow standard deviation σmin, within the target airflow range. For instance, multi-objective particle swarm optimization (MOPSO) can be used, under the premise of satisfying constraints (W... slot ≥0.5mm, D slot ≤2mm, groove angle θ slot Multiple sets of guide vane parameters are randomly generated (∈[30°, 60°]). Each set of guide vane parameters is input into a CFD model (such as Fluent, STAR-CCM+). Combined with the optimized throttle body curvature parameters, the airflow field under different operating conditions is simulated to obtain pressure loss and airflow standard deviation. These are then input into the objective function to obtain the fitness value. The optimal guide vane parameters are iteratively solved based on the fitness value. The objective function is min(0.7). ΔP / ΔP ref +0.3 σ / σ ref ), where ΔP ref This is the reference pressure loss (e.g., 0.3 kPa), σ ref It is the reference airflow standard deviation (e.g., 0.15 m / s).

[0071] Through the above steps S510, through collaborative optimization and feedback correction, it is beneficial to reduce airflow separation and eddy current losses, enhance adaptability to all operating conditions, and optimize design efficiency and cost.

[0072] In one possible implementation, please refer to Figure 2 The methods also include: S700 determines the transition area based on the inner and outer regions.

[0073] It can be understood that the inner region is the region centered on the throttle body axis, the outer region is the region bounded by the edge of the throttle body, and the transition region is the annular region between the inner and outer regions.

[0074] S800 determines the curvature of the transition region based on the optimized curvature parameters of the front and back sides of the electronic throttle plate.

[0075] For example, the curvature of the transition region can be obtained by fitting a high-order polynomial curvature based on the curvature parameters of the optimized electronic throttle plate's front and back surfaces, so as to achieve a continuous and smooth change in curvature within the transition region.

[0076] Through the above steps S700 to S800, the curvature gradient and operating parameters are dynamically correlated to achieve adaptive adjustment of the curvature in the transition region, which is beneficial to enhance the adaptability of the entire operating condition.

[0077] In one possible implementation, please refer to Figure 2 The methods also include: S001, determine the gap between the edge of the electronic throttle body and the valve body based on the curvature of the outer region of the front and back sides of the optimized electronic throttle body.

[0078] For example, the gap between the edge of the electronic throttle body and the valve body can be determined based on the curvature of the outer regions of the optimized electronic throttle body's front and back surfaces. For instance, the curvature κ = 1 / R, and the gap δ = R. (1-cosθ / 2), where θ is the rotation angle of the throttle body from closed to the target opening.

[0079] S002, determine the diameter of the throttle plate based on the clearance.

[0080] For example, the diameter of the throttle valve can be determined based on the clearance, for instance, diameter D = α. (D valve +2δ max ), where α is the compensation coefficient (usually taken as 1.05-1.1), D valve It is the diameter of the valve body throat, δ max That is the maximum gap.

[0081] Through the steps S001 to S002 described above, precise clearance design helps reduce the rate of carbon buildup, extends the throttle body cleaning cycle, and lowers maintenance costs. Diameter matching ensures a smooth transition of airflow at the edge of the throttle body, which helps reduce turbulence losses and improves intake efficiency.

[0082] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0083] Corresponding to the electronic throttle plate profile optimization design method described in the above embodiments, this application also provides an electronic throttle plate profile optimization design device, the various modules of which can realize the various steps of the electronic throttle plate profile optimization design method. Figure 5 The diagram shows a structural block diagram of the electronic throttle plate profile optimization design device provided in the embodiments of this application. For ease of explanation, only the parts related to the embodiments of this application are shown.

[0084] Reference Figure 5 The device includes: The optimization curvature region module is used to determine the corresponding optimization curvature region of the electronic throttle plate according to different engine operating conditions; wherein, the operating conditions are idling, acceleration, partial load or deceleration fuel cut-off, and the optimization curvature region includes the inner region of the electronic throttle plate near the rotating shaft and / or the outer region away from the rotating shaft. The correlation module is used to determine the correlation between the curvature parameters and airflow parameters of the front and back sides of the electronic throttle plate in the region of curvature to be optimized; wherein, the curvature parameters include the curvature of the inner region and the curvature of the outer region, the airflow parameters include airflow resistance parameters and air distribution parameters, the airflow resistance parameters are used to reflect the pressure loss when air flows through the throttle plate, the air distribution parameters are used to reflect the uniformity of the airflow at the throttle outlet, and the correlation includes a first correlation between the curvature parameters and airflow resistance parameters of the front side of the electronic throttle plate, a second correlation between the curvature parameters and air distribution parameters of the front side of the electronic throttle plate, a third correlation between the curvature parameters and airflow resistance parameters of the back side of the electronic throttle plate, and a fourth correlation between the curvature parameters and air distribution parameters of the back side of the electronic throttle plate. The first optimization module is used to optimize the curvature parameters of the curvature region to be optimized on the front side of the electronic throttle plate according to the first correlation relationship and the second correlation relationship; The second optimization module is used to optimize the curvature parameters of the curvature region to be optimized on the reverse side of the electronic throttle plate according to the third and fourth correlation relationships. The guide groove parameter module is used to determine the guide groove parameters of the front and back surfaces of the electronic throttle plate based on the optimized curvature parameters of the front and back surfaces; wherein, the guide groove parameters include the shape and position of the multi-level guide grooves on the surface.

[0085] It should be noted that the information interaction and execution process between the above modules are based on the same concept as the method embodiments of this application. For details on their specific functions and technical effects, please refer to the method embodiments section, which will not be repeated here.

[0086] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above device can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0087] This application also provides an electronic throttle body profile optimization design device. Figure 6 This is a schematic diagram of the structure of an electronic throttle body profile optimization design device provided in one embodiment of this application. Figure 6 As shown, the electronic throttle body profile optimization design device 6 of this embodiment includes: at least one processor 60 ( Figure 6 Only one is shown in the image), at least one memory 61 ( Figure 6 (Only one is shown in the image) and a computer program 62 stored in the at least one memory 61 and executable on the at least one processor 60. When the processor 60 executes the computer program 62, it causes the electronic throttle plate profile optimization design device 6 to implement the steps in any of the above-described electronic throttle plate profile optimization design method embodiments, or causes the electronic throttle plate profile optimization design device 6 to implement the functions of each module / unit in the above-described device embodiments.

[0088] For example, the computer program 62 may be divided into one or more modules / units, which are stored in the memory 61 and executed by the processor 60 to complete this application. The one or more modules / units may be a series of computer program instruction segments capable of performing specific functions, which describe the execution process of the computer program 62 in the electronic throttle body profile optimization design device 6.

[0089] The electronic throttle body profile optimization design device 6 can be a computing device such as an industrial computer, programmable logic controller, embedded control system, distributed control system, desktop computer, laptop, handheld computer, and cloud server. This electronic throttle body profile optimization design device may include, but is not limited to, a processor 60 and a memory 61. Those skilled in the art will understand that... Figure 6 This is merely an example of the electronic throttle body profile optimization design device 6 and does not constitute a limitation on the electronic throttle body profile optimization design device 6. It may include more or fewer components than shown in the figure, or combine certain components, or different components, such as input / output devices, network access devices, buses, etc.

[0090] The processor 60 can be a Central Processing Unit (CPU), or it can be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor.

[0091] In some embodiments, the memory 61 may be an internal storage unit of the electronic throttle body profile optimization design device 6, such as a hard disk or memory of the electronic throttle body profile optimization design device 6. In other embodiments, the memory 61 may be an external storage device of the electronic throttle body profile optimization design device 6, such as a plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, etc., equipped on the electronic throttle body profile optimization design device 6. Further, the memory 61 may include both internal storage units and external storage devices of the electronic throttle body profile optimization design device 6. The memory 61 is used to store operating systems, applications, bootloaders, data, and other programs, such as the program code of computer programs. The memory 61 can also be used to temporarily store data that has been output or will be output.

[0092] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps in any of the above method embodiments.

[0093] This application provides a computer program product that, when run on an electronic throttle body profile optimization design device, enables the electronic throttle body profile optimization design device to implement the steps in any of the above-described method embodiments.

[0094] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments of this application can be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include at least: any entity or device capable of carrying the computer program code to the electronic throttle body profile optimization design device, a recording medium, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium, such as a USB flash drive, a portable hard drive, a magnetic disk, or an optical disk.

[0095] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0096] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0097] In the embodiments provided in this application, it should be understood that the disclosed electronic throttle plate profile optimization design device and method can be implemented in other ways. For example, the electronic throttle plate profile optimization design device embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0098] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0099] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A method for optimizing the design of electronic throttle valve profile, characterized in that, include: The corresponding curvature region to be optimized for the electronic throttle plate is determined according to different engine operating conditions; wherein, the operating conditions are idling, acceleration, partial load or deceleration fuel cut-off, and the curvature region to be optimized includes the inner region of the electronic throttle plate near the pivot and / or the outer region away from the pivot. The correlation between the curvature parameters and airflow parameters of the front and back surfaces of the electronic throttle plate in the region of curvature to be optimized is determined; wherein, the curvature parameters include the curvature of the inner region and the curvature of the outer region, the airflow parameters include airflow resistance parameters and air distribution parameters, the airflow resistance parameters are used to reflect the pressure loss when air flows through the throttle plate, the air distribution parameters are used to reflect the uniformity of the airflow at the throttle outlet, and the correlation includes a first correlation between the curvature parameters of the front surface of the electronic throttle plate and the airflow resistance parameters, a second correlation between the curvature parameters of the front surface of the electronic throttle plate and the air distribution parameters, a third correlation between the curvature parameters of the back surface of the electronic throttle plate and the airflow resistance parameters, and a fourth correlation between the curvature parameters of the back surface of the electronic throttle plate and the air distribution parameters. The curvature parameters of the curvature region to be optimized on the front of the electronic throttle plate are optimized based on the first correlation and the second correlation. The curvature parameters of the curvature region to be optimized on the reverse side of the electronic throttle plate are optimized based on the third and fourth correlation relationships. The parameters of the guide grooves on the front and back of the electronic throttle plate are determined based on the optimized curvature parameters of the front and back surfaces; wherein, the guide groove parameters include the shape and position of the multi-level guide grooves on the surface.

2. The electronic throttle plate profile optimization design method as described in claim 1, characterized in that, The step of optimizing the curvature parameters of the region to be optimized on the front side of the electronic throttle plate according to the first correlation and the second correlation includes: When the air resistance parameter meets the first preset range, the first range of values ​​for the curvature parameter of the front of the electronic throttle plate under different operating conditions is obtained according to the first correlation. When the air distribution parameters meet the second preset range, a second range of values ​​for the curvature parameter of the electronic throttle plate front is determined based on the second correlation under different operating conditions. Based on each of the first value ranges and each of the second value ranges, a first optimized value for the curvature parameter of the front surface of the electronic throttle valve is determined; wherein, the first optimized value includes the curvature optimized value of the inner region and the curvature optimized value of the outer region.

3. The electronic throttle plate profile optimization design method as described in claim 2, characterized in that, The step of determining the first optimized value of the curvature parameter of the front surface of the electronic throttle valve based on each of the first value ranges and each of the second value ranges includes: When it is determined that the curvature region to be optimized includes the inner region, the first parameter range of the first airflow parameter is determined according to the first value range and the second value range of the corresponding operating conditions; wherein, the first airflow parameter includes the inner flow cross-section width and the inner airflow velocity; When it is determined that the curvature region to be optimized includes the outer region, the second parameter range of the second airflow parameter is determined according to the first value range and the second value range of the corresponding operating conditions; wherein, the second airflow parameter includes the outer flow area and the outer airflow turbulence intensity; The first optimized value of the curvature parameter of the front surface of the electronic throttle valve is determined based on the first parameter range and the second parameter range.

4. The electronic throttle plate profile optimization design method as described in claim 1, characterized in that, The optimization of the curvature parameters of the region to be optimized on the reverse side of the electronic throttle plate based on the third and fourth correlation relationships includes: When the air flow resistance parameter meets the third preset range, the third range of values ​​for the curvature parameter of the electronic throttle plate under different operating conditions is obtained according to the third correlation. When the air distribution parameters meet the fourth preset range, the fourth range of values ​​for the curvature parameter of the electronic throttle plate under different operating conditions is determined based on the fourth correlation. Based on each of the third and fourth value ranges, a second optimized value for the curvature parameter of the reverse side of the electronic throttle plate is determined; wherein, the second optimized value includes the curvature optimized value of the inner region and the curvature optimized value of the outer region.

5. The electronic throttle body profile optimization design method as described in claim 1, characterized in that, The method further includes: The curvature parameters of the region to be optimized on the reverse side of the electronic throttle valve are optimized based on the curvature parameters of the region to be optimized on the front side of the optimized electronic throttle valve.

6. The electronic throttle body profile optimization design method as described in claim 1, characterized in that, The step of determining the guide groove parameters of the front and back surfaces of the electronic throttle valve based on the optimized curvature parameters of the front and back surfaces includes: The parameters of the guide grooves on the front and back of the electronic throttle plate are determined based on the target airflow under different operating conditions and the optimized curvature parameters of the front and back of the electronic throttle plate.

7. The electronic throttle plate profile optimization design method as described in claim 1, characterized in that, The method further includes: The transition region is determined based on the inner region and the outer region; The curvature of the transition region is determined based on the optimized curvature parameters of the front and back surfaces of the electronic throttle plate.

8. The electronic throttle plate profile optimization design method as described in claim 1, characterized in that, The method further includes: The gap between the edge of the electronic throttle body and the valve body is determined based on the curvature of the outer region of the front and back sides of the optimized electronic throttle body. The diameter of the throttle plate is determined based on the gap.

9. A device for optimizing the design of electronic throttle valve plate profile, characterized in that, include: The optimization curvature region module is used to determine the corresponding optimization curvature region of the electronic throttle plate according to different engine operating conditions; wherein, the operating conditions are idling, acceleration, partial load or deceleration fuel cut-off, and the optimization curvature region includes the inner region of the electronic throttle plate near the rotating shaft and / or the outer region away from the rotating shaft. The correlation module is used to determine the correlation between the curvature parameters and airflow parameters of the front and back sides of the electronic throttle plate in the region of curvature to be optimized; wherein, the curvature parameters include the curvature of the inner region and the curvature of the outer region, the airflow parameters include airflow resistance parameters and air distribution parameters, the airflow resistance parameters are used to reflect the pressure loss when air flows through the throttle plate, the air distribution parameters are used to reflect the uniformity of the airflow at the throttle outlet, and the correlation includes a first correlation between the curvature parameters and airflow resistance parameters of the front side of the electronic throttle plate, a second correlation between the curvature parameters and air distribution parameters of the front side of the electronic throttle plate, a third correlation between the curvature parameters and airflow resistance parameters of the back side of the electronic throttle plate, and a fourth correlation between the curvature parameters and air distribution parameters of the back side of the electronic throttle plate. The first optimization module is used to optimize the curvature parameters of the curvature region to be optimized on the front side of the electronic throttle plate according to the first correlation relationship and the second correlation relationship; The second optimization module is used to optimize the curvature parameters of the curvature region to be optimized on the reverse side of the electronic throttle plate according to the third and fourth correlation relationships. The guide groove parameter module is used to determine the guide groove parameters of the front and back surfaces of the electronic throttle plate based on the optimized curvature parameters of the front and back surfaces; wherein, the guide groove parameters include the shape and position of the multi-level guide grooves on the surface.

10. An electronic throttle body profile optimization design device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the method as described in any one of claims 1 to 8.

Images