A method and device for optimizing the size of a main lubrication pipeline of a hybrid transmission

Abstract

The application provides a hybrid transmission active lubrication pipeline size optimization method and device, the method comprising: constructing a first oil path model according to a hybrid transmission model to be optimized; performing simulation calculation according to the first oil path model to obtain a first simulation flow calculation result; when the first simulation flow calculation result indicates that the flow of each lubrication position does not meet the target flow demand, adjusting the lubrication position nozzle size in the first oil path model, and determining a second oil path model when the adjustment is reasonable; performing simulation calculation according to the second oil path model to obtain a second simulation flow calculation result; when the second simulation flow calculation result indicates that the flow of each lubrication position meets the target flow demand, and the pipeline inlet pressure is less than the pipeline inlet pressure limit value, output the updated nozzle size. The method and device can automatically optimize the size of the hybrid transmission active lubrication pipeline, thereby shortening the simulation operation time and improving the size optimization speed.

Description

Technical Field

[0001] This application relates to the field of new energy hybrid transmission technology, and more specifically, to a method and apparatus for optimizing the size of active lubrication pipelines in a hybrid transmission. Background Technology

[0002] In the design and manufacturing of new energy hybrid transmissions, reducing oil churning losses and ensuring adequate lubrication of all components are crucial for improving overall performance and reliability. Existing methods typically rely on first establishing a simulation model for calculations, then technicians manually adjusting the nozzle dimensions at each lubrication point based on the simulation results, and then conducting another simulation, iterating repeatedly to optimize the dimensions. However, in practice, it has been found that existing methods are resource-intensive, time-consuming, and prolong the development cycle. Summary of the Invention

[0003] The purpose of this application is to provide a method and apparatus for optimizing the size of the active lubrication pipeline of a hybrid transmission. This method can automatically optimize the size of the active lubrication pipeline of a hybrid transmission without manual intervention, which greatly shortens the simulation operation time, improves the size optimization speed, and shortens the development cycle.

[0004] The first aspect of this application provides a method for optimizing the size of the active lubrication pipeline in a hybrid transmission, including:

[0005] Based on the hybrid transmission model to be optimized, construct the first oil circuit model;

[0006] The simulation calculation is performed based on the first oil circuit model to obtain the first simulation flow rate calculation result;

[0007] Obtain the required parameters; wherein, the required parameters include at least the target flow rate requirement, the pipeline inlet pressure limit, and the machining tool size table;

[0008] When it is determined from the first simulation flow calculation result that the flow rate at each lubrication position does not meet the target flow rate requirement, the nozzle size at the lubrication position in the first oil circuit model is adjusted according to the machining tool size table and the first simulation flow calculation result to obtain the updated nozzle size;

[0009] When it is determined that the updated nozzle size is reasonable, the nozzle size of the oil circuit model is set according to the updated nozzle size to obtain the set second oil circuit model;

[0010] The simulation calculation results of the second oil circuit model are obtained by performing simulation calculations.

[0011] When it is determined from the second simulated flow calculation result that the flow rate at each lubrication location meets the target flow rate requirement, it is determined from the second simulated flow calculation result whether the pipeline inlet pressure is less than the pipeline inlet pressure limit.

[0012] If so, output the updated nozzle size.

[0013] Furthermore, the step of constructing a first oil circuit model based on the hybrid transmission model to be optimized includes:

[0014] Obtain the hybrid transmission model to be optimized, the first configuration parameter, and the second configuration parameter; wherein, the first configuration parameter includes at least the nozzle parameter and the initial nozzle size value; and the second configuration parameter includes at least the boundary condition parameter and the output parameter.

[0015] An initial oil circuit model is constructed based on the hybrid transmission model;

[0016] The initial oil circuit model is configured with parameters according to the first configuration parameters to obtain the first configuration model;

[0017] The first oil circuit model is meshed to obtain the second configuration model;

[0018] The second configuration model is configured according to the second configuration parameters to obtain the configured first oil circuit model.

[0019] Further, the step of performing simulation calculations based on the first oil circuit model to obtain the first simulated flow rate calculation result includes:

[0020] The simulation region of the first oil circuit model is initialized to obtain the initialized oil circuit model.

[0021] The solution parameters of the initial oil circuit model are adjusted to obtain the simulation model;

[0022] The simulation calculation is performed based on the model to be simulated to obtain the first simulation flow calculation result.

[0023] Further, adjusting the nozzle size at the lubrication location in the first oil circuit model based on the machining tool size table and the first simulation flow calculation result to obtain the updated nozzle size includes:

[0024] The simulated flow rate results for each lubrication location are determined based on the first simulated flow rate calculation results.

[0025] The simulated flow rate results for each lubrication location are compared with the target flow rate requirement to obtain the comparison results;

[0026] Based on the comparison results, the size of the lubrication nozzle is adjusted to obtain the adjusted nozzle size;

[0027] Based on the machining tool size table and the adjusted nozzle size, determine the updated nozzle size.

[0028] Furthermore, the method also includes:

[0029] Based on the updated nozzle size and the simulated flow rate results at each lubrication location, the flow rate at each lubrication location after the update is predicted, and the flow rate prediction results are obtained.

[0030] Based on the flow prediction results, determine the impact of adjusting the nozzle size at the lubrication location on other lubrication locations;

[0031] Determine whether the updated nozzle size is reasonable based on the influence of other lubrication locations;

[0032] If so, output the updated nozzle size, and perform the setting of the nozzle size of the oil circuit model according to the updated nozzle size to obtain the set second oil circuit model.

[0033] Furthermore, the method also includes:

[0034] When it is determined that the updated nozzle size is unreasonable based on the influence of other lubrication locations, the process of adjusting the nozzle size of the lubrication location in the first oil circuit model according to the machining tool size table and the first simulation flow calculation result is executed to obtain the updated nozzle size.

[0035] Furthermore, after performing simulation calculations based on the second oil circuit model to obtain the second simulated flow rate calculation result, the method further includes:

[0036] When it is determined from the second simulated flow rate calculation result that the flow rate at each lubrication position does not meet the target flow rate requirement, the nozzle size at the lubrication position in the second oil circuit model is readjusted according to the machining tool size table and the second simulated flow rate calculation result to obtain the updated nozzle size. Then, the flow rate at each lubrication position after the update is predicted based on the updated nozzle size and the simulated flow rate result of each lubrication position to obtain the flow rate prediction result.

[0037] Furthermore, the method also includes:

[0038] When the pipeline inlet pressure is determined to be not less than the pipeline inlet pressure limit based on the second simulated flow calculation result, an alarm message indicating that the pipeline inlet pressure exceeds the limit is output.

[0039] A second aspect of this application provides a hybrid transmission active lubrication line size optimization device, the hybrid transmission active lubrication line size optimization device comprising:

[0040] The building unit is used to build the first oil circuit model based on the hybrid transmission model to be optimized;

[0041] The first simulation unit is used to perform simulation calculations based on the first oil circuit model to obtain the first simulation flow rate calculation result.

[0042] An acquisition unit is used to acquire demand parameters; wherein, the demand parameters include at least the target flow rate demand, the pipeline inlet pressure limit, and the machining tool size table;

[0043] The size adjustment unit is used to adjust the nozzle size of the lubrication position in the first oil circuit model according to the machining tool size table and the first simulation flow calculation result when it is determined that the flow rate of each lubrication position does not meet the target flow rate requirement based on the first simulation flow calculation result, so as to obtain the updated nozzle size.

[0044] The size setting unit is used to set the nozzle size of the oil circuit model according to the updated nozzle size when it is determined that the updated nozzle size is reasonable, so as to obtain the set second oil circuit model.

[0045] The second simulation unit is used to perform simulation calculations based on the second oil circuit model to obtain the second simulation flow rate calculation results.

[0046] The first judgment unit is used to determine whether the pipeline inlet pressure is less than the pipeline inlet pressure limit based on the second simulation flow calculation result when it is determined that the flow rate at each lubrication position meets the target flow rate requirement based on the second simulation flow calculation result.

[0047] The first output unit is used to output the updated nozzle size when it is determined that the pipeline inlet pressure is less than the pipeline inlet pressure limit.

[0048] Furthermore, the building unit includes:

[0049] A sub-unit is used to acquire the hybrid transmission model to be optimized, the first configuration parameter, and the second configuration parameter; wherein, the first configuration parameter includes at least the nozzle parameter and the initial nozzle size value; and the second configuration parameter includes at least the boundary condition parameter and the output parameter.

[0050] Construct sub-units to build an initial oil circuit model based on the hybrid transmission model;

[0051] A configuration subunit is used to configure the parameters of the initial oil circuit model according to the first configuration parameters to obtain a first configuration model;

[0052] Divide the model into sub-units to perform mesh generation on the first oil circuit model, thereby obtaining a second configuration model;

[0053] The configuration subunit is further configured to configure the second configuration model according to the second configuration parameters to obtain the configured first oil circuit model.

[0054] Furthermore, the first simulation unit includes:

[0055] An initialization subunit is used to initialize the simulation region of the first oil circuit model to obtain an initialized oil circuit model.

[0056] The first adjustment subunit is used to adjust the solution parameters of the initial oil circuit model to obtain the simulation model;

[0057] The simulation subunit is used to perform simulation calculations based on the model to be simulated to obtain the first simulation flow calculation result.

[0058] Furthermore, the size adjustment unit includes:

[0059] The first determining subunit is used to determine the simulated flow rate results for each lubrication location based on the first simulated flow rate calculation results.

[0060] The comparison subunit is used to compare the simulated flow rate results of each lubrication location with the target flow rate requirement to obtain a comparison result.

[0061] The second adjustment subunit is used to adjust the size of the lubrication position nozzle according to the comparison result, so as to obtain the adjusted nozzle size.

[0062] The second determining subunit is used to determine the updated nozzle size based on the machining tool size table and the adjusted nozzle size.

[0063] Furthermore, the hybrid transmission active lubrication pipeline size optimization device also includes:

[0064] The prediction unit is used to predict the flow rate of each lubrication position after the update based on the updated nozzle size and the simulated flow rate results of each lubrication position, and obtain the flow rate prediction result.

[0065] The determining unit is used to determine the impact of adjusting the nozzle size at the lubrication position on other lubrication positions based on the flow prediction result.

[0066] The second judgment unit is used to determine whether the updated nozzle size is reasonable based on the influence of the other lubrication positions.

[0067] The first output unit is further configured to output the updated nozzle size when the updated nozzle size is reasonable, and trigger the size setting unit to set the nozzle size of the oil circuit model according to the updated nozzle size, so as to obtain the set second oil circuit model.

[0068] Furthermore, the size adjustment unit is also used to adjust the lubrication position nozzle size in the first oil circuit model according to the machining tool size table and the first simulation flow calculation result when the updated nozzle size is unreasonable, so as to obtain the updated nozzle size.

[0069] Furthermore, the size adjustment unit is also used to, after the second simulation unit performs simulation calculations based on the second oil circuit model and obtains the second simulation flow calculation result, determine based on the second simulation flow calculation result that the flow rate at each lubrication position does not meet the target flow rate requirement, readjust the nozzle size of the lubrication position in the second oil circuit model according to the machining tool size table and the second simulation flow calculation result, obtain an updated nozzle size, and trigger the prediction unit to predict the flow rate of each lubrication position after the size update based on the updated nozzle size and the simulation flow rate result of each lubrication position, and obtain a flow prediction result.

[0070] Furthermore, the hybrid transmission active lubrication pipeline size optimization device also includes:

[0071] The second output unit is used to output an alarm message indicating that the inlet pressure exceeds the limit when the inlet pressure is determined to be not less than the limit value based on the second simulated flow calculation result.

[0072] A third aspect of this application provides an electronic device including a memory and a processor, the memory storing a computer program, the processor running the computer program to cause the electronic device to perform the hybrid transmission active lubrication line size optimization method as described in any of the first aspects of this application.

[0073] The fourth aspect of this application provides a computer-readable storage medium storing computer program instructions, which, when read and executed by a processor, perform the method for optimizing the active lubrication pipeline size of a hybrid transmission as described in any of the first aspects of this application.

[0074] The beneficial effects of this application are as follows: the method and apparatus can rapidly optimize the dimensions of active lubrication pipelines based on programs and simulations; specifically, the simulation process can be closed-loop controlled through a programmable mechanism, and the simulation results can be judged by setting conditions such as minimum flow rate. If the judgment results do not meet the requirements, adjustments are made based on the current nozzle size, and the simulation calculation is re-entered until the target is achieved. Based on this, the method and apparatus can greatly shorten the simulation operation time, improve the speed of size optimization, and shorten the development cycle. Attached Figure Description

[0075] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0076] Figure 1 A schematic flowchart illustrating a method for optimizing the size of an active lubrication pipeline in a hybrid transmission, as provided in an embodiment of this application.

[0077] Figure 2 A schematic flowchart illustrating another method for optimizing the size of the active lubrication pipeline of a hybrid transmission provided in this application embodiment;

[0078] Figure 3 A schematic diagram illustrating an example of optimizing the size of an active lubrication pipeline for a hybrid transmission, provided as an embodiment of this application;

[0079] Figure 4 A schematic diagram of a hybrid transmission active lubrication pipeline size optimization device provided in this application embodiment;

[0080] Figure 5 A schematic diagram of another hybrid transmission active lubrication pipeline size optimization device provided in an embodiment of this application. Detailed Implementation

[0081] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0082] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0083] Example 1

[0084] Please refer to Figure 1 , Figure 1 This embodiment provides a flowchart illustrating a method for optimizing the size of the active lubrication piping in a hybrid transmission. The method includes:

[0085] S101. Based on the hybrid transmission model to be optimized, construct the first oil circuit model.

[0086] S102. Perform simulation calculations based on the first oil circuit model to obtain the first simulation flow rate calculation results.

[0087] S103. Obtain the required parameters; among which, the required parameters include at least the target flow rate requirement, the pipeline inlet pressure limit, and the machining tool size table.

[0088] S104. When it is determined from the first simulation flow calculation results that the flow rate at each lubrication position does not meet the target flow rate requirement, the nozzle size at the lubrication position in the first oil circuit model is adjusted according to the machining tool size table and the first simulation flow calculation results to obtain the updated nozzle size.

[0089] As an optional implementation, the method further includes:

[0090] When it is determined from the first simulation flow rate calculation results that the flow rate at each lubrication point meets the target flow rate requirement, it is determined from the first simulation flow rate calculation results whether the pipeline inlet pressure is less than the pipeline inlet pressure limit.

[0091] If so, obtain the current nozzle size of the first oil path model and output the current nozzle size;

[0092] If not, proceed to step S104 to adjust the nozzle size at the lubrication position in the first oil circuit model based on the machining tool size table and the first simulation flow calculation result, and obtain the updated nozzle size.

[0093] S105. When it is determined that the updated nozzle size is reasonable, the nozzle size of the oil circuit model is set according to the updated nozzle size to obtain the set second oil circuit model.

[0094] S106. Perform simulation calculations based on the second oil circuit model to obtain the second simulation flow rate calculation results.

[0095] As an optional implementation, after performing simulation calculations based on the second oil circuit model to obtain the second simulated flow rate calculation result, the method further includes:

[0096] When it is determined from the second simulation flow calculation results that the flow rate at each lubrication position does not meet the target flow rate requirement, the nozzle size of the lubrication position in the second oil circuit model is readjusted according to the machining tool size table and the second simulation flow calculation results to obtain the updated nozzle size. Then, the above-mentioned process of predicting the flow rate of each lubrication position after the update based on the updated nozzle size and the simulation flow rate results of each lubrication position is performed to obtain the flow prediction result.

[0097] S107. When it is determined from the second simulation flow calculation result that the flow rate at each lubrication position meets the target flow rate requirement, determine whether the pipeline inlet pressure is less than the pipeline inlet pressure limit based on the second simulation flow calculation result. If yes, proceed to step S108; otherwise, end this process.

[0098] S108, Output the updated nozzle size.

[0099] In this embodiment, the subject executing the method can be a computing device such as a computer or server, and no limitation is made in this embodiment.

[0100] In this embodiment, the subject executing the method can also be a smart device such as a smartphone or tablet, and no limitation is made in this embodiment.

[0101] As can be seen, the hybrid transmission active lubrication pipeline size optimization method described in this embodiment can automatically optimize the size of the hybrid transmission active lubrication pipeline without manual intervention, which greatly shortens the simulation operation time, improves the size optimization speed, and shortens the development cycle.

[0102] Example 2

[0103] Please refer to Figure 2 , Figure 2 This embodiment provides a flowchart illustrating a method for optimizing the size of the active lubrication piping in a hybrid transmission. The method includes:

[0104] S201. Obtain the hybrid transmission model to be optimized, the first configuration parameter, and the second configuration parameter.

[0105] In this embodiment, the first configuration parameter includes at least the nozzle parameter and the initial nozzle size value; the second configuration parameter includes at least the boundary condition parameter and the output parameter.

[0106] S202. Construct an initial oil circuit model based on the hybrid transmission model.

[0107] In this embodiment, the method can first analyze the oil circuit and lubrication points of the hybrid transmission model, extract the fluid region from the oil circuit inlet to each outlet, and then name each outlet according to the lubrication point to facilitate flow result statistics and program variable input identification, thereby completing the extraction of the oil circuit model.

[0108] S203. Configure the parameters of the initial oil circuit model according to the first configuration parameters to obtain the first configuration model.

[0109] In this embodiment, the nozzle in the first configuration parameter is set as a parameter form, so that the new size value can be used as a parameter input after program optimization.

[0110] In this embodiment, the initial value of the nozzle diameter at each lubrication position needs to be set in the first round of simulation. Subsequently, the nozzle size value is determined by the program and then input from the interface between the simulation software and the program into the first configuration parameter.

[0111] S204. Mesh the first oil circuit model to obtain the second configuration model.

[0112] In this embodiment, the method can first import the model that has been set up above into mesh generation units; then, set up a fine mesh for smaller locations such as each nozzle; then, set the boundary layer parameters; and finally, generate a volume mesh.

[0113] S205. Configure the parameters of the second configuration model according to the second configuration parameters to obtain the configured first oil circuit model.

[0114] In this embodiment, when setting the boundary condition parameters in the second configuration parameters, the turbulence model can be set first; then the lubricating oil property parameters can be set as parameters, and the default values ​​of the lubricating oil properties can be set; finally, the inlet and outlet boundary conditions can be set, and the inlet flow rate can be set as a parameter.

[0115] In this embodiment, when setting the output parameters in the second configuration parameters, the outlet flow rate and inlet pressure can be set as output parameters respectively; and after the calculation is completed, the distribution state of the oil in the oil circuit is saved and output as an image.

[0116] S206. Initialize the simulation region of the first oil circuit model to obtain the initialized oil circuit model.

[0117] S207. Adjust the solution parameters of the initial oil circuit model to obtain the simulation model.

[0118] In this embodiment, the method first initializes the simulation region and then adjusts other solution parameters. Only after this can the method begin simulation calculations.

[0119] S208. Perform simulation calculations based on the model to be simulated to obtain the first simulation flow calculation result.

[0120] In this embodiment, the method can store the simulation results in the simulation software after the simulation is completed, and the program can read them into the program variables, which facilitates data storage and result analysis and optimization.

[0121] S209. Obtain the required parameters; among which, the required parameters include at least the target flow rate requirement, the pipeline inlet pressure limit, and the machining tool size table.

[0122] In this embodiment, the method can read the target flow rate requirement, flow rate tolerance, pipeline inlet pressure limit, lubricating oil property curve, oil temperature, variable names corresponding to the model, and machining tool size table stored in an Excel spreadsheet.

[0123] In this embodiment, the flow rate requirement for each lubrication point can be a flow rate range. In active lubrication calculations, it is often set as the lower limit of the flow rate, but sometimes it is also set as the flow velocity requirement.

[0124] In this embodiment, the flow tolerance is the error exceeding the lower limit of the flow rate. Specifically, if the simulated flow rate is slightly less than the target flow rate requirement but still within the tolerance range, the flow rate is considered to meet the requirement. The tolerance is generally set to 2.5%, meaning that if the simulated flow rate is greater than 97.5% of the target requirement, the requirement is considered met.

[0125] In this embodiment, the pipeline inlet pressure limit is a preset maximum pipeline inlet pressure limit, used to prevent excessive pressure from causing oil pump failure.

[0126] In this embodiment, the lubricating oil property curve includes scatter plot values ​​of the lubricating oil's kinematic viscosity, dynamic viscosity, density, thermal conductivity, specific heat capacity, etc., as a function of temperature. After determining the simulated oil temperature, the scatter plots need to be interpolated to determine the lubricating oil properties.

[0127] In this embodiment, the oil temperature varies depending on the operating conditions.

[0128] In this embodiment, the program variable names are consistent with the variable names in the simulation model, which facilitates data identification and transmission.

[0129] In this embodiment, the machining tool size table is used to machine the nozzles at each lubrication location, and is determined based on the standard tool sizes available from the manufacturer.

[0130] In this embodiment, the method can first read the simulation flow calculation results, save the simulation results and nozzle size data to Excel, and then proceed with subsequent steps.

[0131] In this embodiment, the method can read simulation calculation results through a program and save them in an Excel spreadsheet, typically storing results such as flow rate and pressure. Except for the first round of simulation, the program controls the optimization of the dimensions of each lubrication point, finally outputting the adjusted dimensional data and flow simulation results, reducing manual intervention time and improving simulation efficiency.

[0132] S210. When it is determined from the first simulation flow calculation result that the flow rate at each lubrication position does not meet the target flow rate requirement, the simulation flow rate result at each lubrication position is determined from the first simulation flow calculation result.

[0133] S211. Compare the simulated flow rate results of each lubrication location with the target flow rate requirement to obtain the comparison results.

[0134] S212. Adjust the size of the lubrication nozzle based on the comparison results to obtain the adjusted nozzle size.

[0135] In this embodiment, the method compares the simulated flow rate results of each lubrication location with the flow rate requirement, and considers reducing the nozzle size of the current lubrication location when the simulated flow rate is much greater than the required flow rate; and considers increasing the nozzle size of the current lubrication location when the simulated flow rate is much less than the required flow rate.

[0136] S213. Determine the updated nozzle size based on the machining tool size table and the adjusted nozzle size.

[0137] In this embodiment, since the dimensions of the machining tools are mostly fixed values ​​rather than continuously changing, it is necessary to determine the updated nozzle dimensions based on the machining tool dimension table.

[0138] As an optional implementation, after step S213, the method further includes:

[0139] Determine whether the updated nozzle size is reasonable. If so, proceed to step S214.

[0140] As a further optional implementation, determining whether the updated nozzle size is reasonable includes:

[0141] Based on the updated nozzle size and the simulated flow rate at each lubrication location, the flow rate at each lubrication location after the update is predicted, and the flow rate prediction results are obtained.

[0142] The impact of adjusting the nozzle size at the lubrication point on other lubrication points is determined based on the flow rate prediction results.

[0143] Determine whether the updated nozzle size is reasonable based on the impact of other lubrication points;

[0144] If so, output the updated nozzle size and perform the above steps to set the nozzle size of the oil circuit model based on the updated nozzle size to obtain the set second oil circuit model.

[0145] As a further optional implementation, the method also includes:

[0146] When it is determined that the updated nozzle size is unreasonable based on the influence of other lubrication locations, the above-mentioned adjustment of the nozzle size at the lubrication location in the first oil circuit model is performed based on the machining tool size table and the first simulation flow calculation results to obtain the updated nozzle size.

[0147] In this embodiment, the method can predict the flow rate of each lubrication position after the update based on the current simulation results and the changes in the size of the lubrication nozzle before and after optimization, using empirical formulas, to determine whether the updated size is reasonable.

[0148] In this embodiment, if the outlet flow rate decreases below the required flow rate or increases significantly after size adjustment, the nozzle size still needs to be readjusted; if the predicted flow rate is reasonable, the nozzle size is then determined for output. Therefore, this step can determine the impact on other lubrication locations.

[0149] S214. When it is determined that the updated nozzle size is reasonable, the nozzle size of the oil circuit model is set according to the updated nozzle size to obtain the set second oil circuit model.

[0150] In this embodiment, the method can import the updated nozzle size into the model through a program and software interface, and then re-perform the simulation calculation and numerical analysis optimization process until the flow rate meets the target requirements. Therefore, this method can output the nozzle size.

[0151] S215. Perform simulation calculations based on the second oil circuit model to obtain the second simulation flow rate calculation results.

[0152] S216. When it is determined from the second simulation flow calculation result that the flow rate at each lubrication position meets the target flow rate requirement, determine whether the pipeline inlet pressure is less than the pipeline inlet pressure limit based on the second simulation flow calculation result. If yes, proceed to step S217; otherwise, proceed to step S218.

[0153] In this embodiment, the method can determine the oil inlet pressure when the flow rate at each lubrication point meets the requirements. Under normal circumstances, the inlet pressure is less than the pipeline inlet pressure limit. If the inlet pressure is greater than the limit, the program will issue a warning to the user, and the main pipeline size needs to be optimized according to the actual situation.

[0154] S217. Output the updated nozzle size and end this process.

[0155] S218, output an alarm message indicating that the inlet pressure of the output pipeline exceeds the limit, and end this process.

[0156] Please refer to Figure 3 , Figure 3 A schematic diagram illustrating an example of optimizing the size of the active lubrication piping in a hybrid transmission is shown. Figure 3 The method mainly comprises three parts: simulation calculation, numerical analysis and optimization, and data setup and storage. Specifically, this method can automatically optimize the dimensions of active lubrication pipelines by setting up a simulation model, writing a program, and setting optimization targets, thereby greatly reducing operation and waiting time, improving the speed of dimension optimization, and shortening the development cycle.

[0157] In this embodiment, the subject executing the method can be a computing device such as a computer or server, and no limitation is made in this embodiment.

[0158] In this embodiment, the subject executing the method can also be a smart device such as a smartphone or tablet, and no limitation is made in this embodiment.

[0159] As can be seen, the hybrid transmission active lubrication pipeline size optimization method described in this embodiment can automatically optimize the size of the hybrid transmission active lubrication pipeline without manual intervention, which greatly shortens the simulation operation time, improves the size optimization speed, and shortens the development cycle.

[0160] Example 3

[0161] Please refer to Figure 4 , Figure 4 This is a schematic diagram of a hybrid transmission active lubrication pipeline size optimization device provided in this embodiment. Figure 4 As shown, the hybrid transmission active lubrication line size optimization device includes:

[0162] Construction unit 310 is used to construct the first oil circuit model based on the hybrid transmission model to be optimized;

[0163] The first simulation unit 320 is used to perform simulation calculations based on the first oil circuit model to obtain the first simulation flow rate calculation result;

[0164] The acquisition unit 330 is used to acquire the demand parameters; wherein, the demand parameters include at least the target flow rate demand, the pipeline inlet pressure limit, and the machining tool size table;

[0165] The size adjustment unit 340 is used to adjust the nozzle size of the lubrication position in the first oil circuit model according to the machining tool size table and the first simulation flow calculation results when it is determined that the flow rate of each lubrication position does not meet the target flow rate requirement based on the first simulation flow calculation results, so as to obtain the updated nozzle size.

[0166] The size setting unit 350 is used to set the nozzle size of the oil circuit model according to the updated nozzle size when it is determined that the updated nozzle size is reasonable, so as to obtain the set second oil circuit model.

[0167] The second simulation unit 360 is used to perform simulation calculations based on the second oil circuit model to obtain the second simulation flow calculation results.

[0168] The first judgment unit 370 is used to determine whether the pipeline inlet pressure is less than the pipeline inlet pressure limit based on the second simulation flow calculation result when it is determined that the flow rate at each lubrication position meets the target flow rate requirement based on the second simulation flow calculation result.

[0169] The first output unit 380 is used to output the updated nozzle size when it is determined that the pipeline inlet pressure is less than the pipeline inlet pressure limit.

[0170] In this embodiment, the explanation of the active lubrication pipeline size optimization device for the hybrid transmission can be referred to the description in Embodiment 1 or Embodiment 2, and will not be repeated here.

[0171] As can be seen, the hybrid transmission active lubrication pipeline size optimization device described in this embodiment can automatically optimize the size of the hybrid transmission active lubrication pipeline without manual intervention, which greatly shortens the simulation operation time, improves the size optimization speed, and shortens the development cycle.

[0172] Example 4

[0173] Please refer to Figure 5 , Figure 5 This is a schematic diagram of a hybrid transmission active lubrication pipeline size optimization device provided in this embodiment. Figure 5 As shown, the hybrid transmission active lubrication line size optimization device includes:

[0174] Construction unit 310 is used to construct the first oil circuit model based on the hybrid transmission model to be optimized;

[0175] The first simulation unit 320 is used to perform simulation calculations based on the first oil circuit model to obtain the first simulation flow rate calculation result;

[0176] The acquisition unit 330 is used to acquire the demand parameters; wherein, the demand parameters include at least the target flow rate demand, the pipeline inlet pressure limit, and the machining tool size table;

[0177] The size adjustment unit 340 is used to adjust the nozzle size of the lubrication position in the first oil circuit model according to the machining tool size table and the first simulation flow calculation results when it is determined that the flow rate of each lubrication position does not meet the target flow rate requirement based on the first simulation flow calculation results, so as to obtain the updated nozzle size.

[0178] The size setting unit 350 is used to set the nozzle size of the oil circuit model according to the updated nozzle size when it is determined that the updated nozzle size is reasonable, so as to obtain the set second oil circuit model.

[0179] The second simulation unit 360 is used to perform simulation calculations based on the second oil circuit model to obtain the second simulation flow calculation results.

[0180] The first judgment unit 370 is used to determine whether the pipeline inlet pressure is less than the pipeline inlet pressure limit based on the second simulation flow calculation result when it is determined that the flow rate at each lubrication position meets the target flow rate requirement based on the second simulation flow calculation result.

[0181] The first output unit 380 is used to output the updated nozzle size when it is determined that the pipeline inlet pressure is less than the pipeline inlet pressure limit.

[0182] As an optional implementation, the building unit 310 includes:

[0183] Acquisition subunit 311 is used to acquire the hybrid transmission model to be optimized, the first configuration parameter and the second configuration parameter; wherein, the first configuration parameter includes at least the nozzle parameter and the initial nozzle size value; the second configuration parameter includes at least the boundary condition parameter and the output parameter;

[0184] Subunit 312 is constructed to build the initial oil circuit model based on the hybrid transmission model;

[0185] Configuration subunit 313 is used to configure the parameters of the initial oil circuit model according to the first configuration parameters to obtain the first configuration model;

[0186] Sub-units 314 are used to mesh the first oil circuit model to obtain the second configuration model;

[0187] The configuration subunit 313 is also used to configure the parameters of the second configuration model according to the second configuration parameters to obtain the configured first oil circuit model.

[0188] As an optional implementation, the first simulation unit 320 includes:

[0189] Initialize subunit 321 to initialize the simulation region of the first oil circuit model and obtain the initialized oil circuit model;

[0190] The first adjustment subunit 322 is used to adjust the solution parameters of the initial oil circuit model to obtain the simulation model;

[0191] Simulation subunit 323 is used to perform simulation calculations based on the model to be simulated to obtain the first simulation flow calculation result.

[0192] As an optional implementation, the size adjustment unit 340 includes:

[0193] The first determining subunit 341 is used to determine the simulated flow rate results for each lubrication position based on the first simulated flow rate calculation results.

[0194] Comparison subunit 342 is used to compare the simulated flow rate results of each lubrication location with the target flow rate requirement to obtain the comparison results;

[0195] The second adjustment subunit 343 is used to adjust the size of the lubrication position nozzle according to the comparison result, so as to obtain the adjusted nozzle size;

[0196] The second determining subunit 344 is used to determine the updated nozzle size based on the machining tool size table and the adjusted nozzle size.

[0197] As an optional implementation, the hybrid transmission active lubrication line size optimization device further includes:

[0198] The prediction unit 390 is used to predict the flow rate of each lubrication position after the update based on the updated nozzle size and the simulated flow rate results of each lubrication position, and obtain the flow prediction result.

[0199] The determination unit 400 is used to determine the impact of adjusting the nozzle size at the lubrication position on other lubrication positions based on the flow prediction results.

[0200] The second judgment unit 410 is used to judge whether the updated nozzle size is reasonable based on the influence of other lubrication locations.

[0201] The first output unit 380 is also used to output the updated nozzle size when the updated nozzle size is reasonable, and to trigger the size setting unit 350 to set the nozzle size of the oil circuit model according to the updated nozzle size, so as to obtain the set second oil circuit model.

[0202] As an optional implementation, the size adjustment unit 340 is also used to adjust the size of the lubrication position nozzle in the first oil circuit model according to the machining tool size table and the first simulation flow calculation result when the updated nozzle size is unreasonable, so as to obtain the updated nozzle size.

[0203] As an optional implementation, the size adjustment unit 340 is also used to, after the second simulation unit 360 performs simulation calculations based on the second oil circuit model and obtains the second simulation flow calculation result, determine based on the second simulation flow calculation result that the flow rate at each lubrication position does not meet the target flow rate requirement, readjust the nozzle size of the lubrication position in the second oil circuit model according to the machining tool size table and the second simulation flow calculation result, obtain the updated nozzle size, and trigger the prediction unit 390 to predict the flow rate of each lubrication position after the size update based on the updated nozzle size and the simulation flow rate result of each lubrication position, and obtain the flow prediction result.

[0204] As an optional implementation, the hybrid transmission active lubrication line size optimization device further includes:

[0205] The second output unit 420 is used to output an alarm message indicating that the inlet pressure exceeds the limit when the inlet pressure is determined to be not less than the limit value based on the second simulation flow calculation result.

[0206] In this embodiment, the explanation of the active lubrication pipeline size optimization device for the hybrid transmission can be referred to the description in Embodiment 1 or Embodiment 2, and will not be repeated here.

[0207] As can be seen, the hybrid transmission active lubrication pipeline size optimization device described in this embodiment can automatically optimize the size of the hybrid transmission active lubrication pipeline without manual intervention, which greatly shortens the simulation operation time, improves the size optimization speed, and shortens the development cycle.

[0208] This application provides an electronic device, including a memory and a processor. The memory stores a computer program, and the processor runs the computer program to enable the electronic device to perform the hybrid transmission active lubrication pipeline size optimization method in embodiment 1 or embodiment 2 of this application.

[0209] This application provides a computer-readable storage medium storing computer program instructions. When the computer program instructions are read and executed by a processor, the method for optimizing the size of the active lubrication pipeline of a hybrid transmission as described in Embodiment 1 or Embodiment 2 of this application is executed.

[0210] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can also be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram and / or flowchart, and combinations of blocks in block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0211] In addition, the functional modules in the various embodiments of this application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0212] If the aforementioned functions are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0213] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0214] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0215] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A method for optimizing the size of the active lubrication pipeline in a hybrid transmission, characterized in that, The method comprises the following steps: constructing a first oil path model according to a hybrid transmission model to be optimized; performing simulation calculation according to the first oil path model to obtain a first simulation flow calculation result; obtaining demand parameters; wherein the demand parameters at least include a target flow demand, a pipeline inlet pressure limit value and a machining tool size table; when it is judged that the flow of each lubrication position does not meet the target flow demand according to the first simulation flow calculation result, adjusting the lubrication position nozzle size in the first oil path model according to the machining tool size table and the first simulation flow calculation result to obtain an updated nozzle size; when it is judged that the updated nozzle size is reasonable, setting the nozzle size of the oil path model according to the updated nozzle size to obtain a set second oil path model; performing simulation calculation according to the second oil path model to obtain a second simulation flow calculation result; when it is judged that the flow of each lubrication position meets the target flow demand according to the second simulation flow calculation result, judging whether the pipeline inlet pressure is less than the pipeline inlet pressure limit value according to the second simulation flow calculation result; if yes, outputting the updated nozzle size.

2. The method of claim 1, wherein, The method of constructing a first oil path model according to a hybrid transmission model to be optimized comprises the following steps: obtaining a hybrid transmission model to be optimized, first configuration parameters and second configuration parameters; wherein the first configuration parameters at least include nozzle parameters and initial nozzle size values; the second configuration parameters at least include boundary condition parameters and output parameters; constructing an initial oil path model according to the hybrid transmission model; performing parameter configuration on the initial oil path model according to the first configuration parameters to obtain a first configuration model; performing grid division on the first oil path model to obtain a second configuration model; performing parameter configuration on the second configuration model according to the second configuration parameters to obtain a configured first oil path model.

3. The method of claim 1, wherein, The method of performing simulation calculation according to the first oil path model to obtain a first simulation flow calculation result comprises the following steps: performing simulation region initialization on the first oil path model to obtain an initialized oil path model; performing solving parameter adjustment on the initialized oil path model to obtain a model to be simulated; performing simulation calculation according to the model to be simulated to obtain a first simulation flow calculation result.

4. The method of claim 1, wherein, The method of adjusting the lubrication position nozzle size in the first oil path model according to the machining tool size table and the first simulation flow calculation result to obtain an updated nozzle size comprises the following steps: determining simulation flow results of each lubrication position according to the first simulation flow calculation result; comparing the simulation flow results of each lubrication position with the target flow demand to obtain a comparison result; adjusting the lubrication position nozzle size according to the comparison result to obtain an adjusted nozzle size; determining an updated nozzle size according to the machining tool size table and the adjusted nozzle size.

5. The method of claim 4, wherein, The method further comprises the following steps: predicting the flow of each lubrication position after size updating according to the updated nozzle size and the simulation flow results of each lubrication position to obtain a flow prediction result; determine an influence of the adjusted nozzle size on other lubrication positions according to the flow prediction result; determine whether the updated nozzle size is reasonable according to the influence of the adjusted nozzle size on other lubrication positions; if yes, output the updated nozzle size and perform the nozzle size setting according to the updated nozzle size on the oil circuit model to obtain a set second oil circuit model.

6. The method of claim 5, wherein, The method further comprises: when it is determined that the updated nozzle size is unreasonable according to the influence of the adjusted nozzle size on other lubrication positions, perform the adjustment of the nozzle size of the lubrication position in the first oil circuit model according to the machining tool size table and the first simulation flow calculation result to obtain an updated nozzle size.

7. The method of claim 5, wherein, after the simulation calculation according to the second oil circuit model to obtain a second simulation flow calculation result, the method further comprises: when it is determined that the flow of each lubrication position does not meet the target flow requirement according to the second simulation flow calculation result, adjust the nozzle size of the lubrication position in the second oil circuit model according to the machining tool size table and the second simulation flow calculation result to obtain an updated nozzle size, and perform the prediction of the flow of each lubrication position after the size adjustment according to the updated nozzle size and the simulation flow result of each lubrication position to obtain a flow prediction result.

8. The method of claim 5, wherein, The method further comprises: when it is determined that the pipeline inlet pressure is not less than the pipeline inlet pressure limit value according to the second simulation flow calculation result, output an alarm information that the pipeline inlet pressure exceeds the limit value.

9. A hybrid transmission active lubrication line size optimization device, characterized by, The hybrid transmission active lubrication pipeline size optimization device comprises: a construction unit configured to construct a first oil circuit model according to a hybrid transmission model to be optimized; a first simulation unit configured to perform simulation calculation according to the first oil circuit model to obtain a first simulation flow calculation result; an acquisition unit configured to acquire demand parameters; wherein the demand parameters at least include a target flow requirement, a pipeline inlet pressure limit value, and a machining tool size table; a size adjustment unit configured to adjust the nozzle size of the lubrication position in the first oil circuit model according to the machining tool size table and the first simulation flow calculation result when it is determined that the flow of each lubrication position does not meet the target flow requirement according to the first simulation flow calculation result, to obtain an updated nozzle size; a size setting unit configured to set the nozzle size of the oil circuit model according to the updated nozzle size when it is determined that the updated nozzle size is reasonable, to obtain a set second oil circuit model; a second simulation unit configured to perform simulation calculation according to the second oil circuit model to obtain a second simulation flow calculation result; a first judgment unit configured to determine whether the pipeline inlet pressure is less than the pipeline inlet pressure limit value according to the second simulation flow calculation result when it is determined that the flow of each lubrication position meets the target flow requirement according to the second simulation flow calculation result; a first output unit configured to output the updated nozzle size when it is determined that the pipeline inlet pressure is less than the pipeline inlet pressure limit value.

10. An electronic device, comprising: The electronic device comprises a memory for storing a computer program and a processor for running the computer program to enable the electronic device to perform the hybrid transmission active lubrication pipeline size optimization method of any one of claims 1 to 8.

11. A readable storage medium, characterized by, The readable storage medium stores computer program instructions, and the computer program instructions are read and run by a processor to perform the hybrid transmission active lubrication pipeline size optimization method of any one of claims 1 to 8.

Images