Method and device for optimizing size of active lubrication pipeline of hybrid transmission

Abstract

The invention provides a hybrid transmission active lubrication pipeline size optimization method and device, and the method comprises the steps: building a first oil path model according to a to-be-optimized hybrid transmission model; simulation calculation is conducted according to the first oil way model, and a first simulation flow calculation result is obtained; when the first simulation flow calculation result indicates that the flow of each lubricating position does not meet the target flow requirement, adjusting the nozzle size of the lubricating position in the first oil way model, and determining a second oil way model when the adjustment is reasonable; simulation calculation is conducted according to the second oil way model, and a second simulation flow calculation result is obtained; when the second simulation flow calculation result indicates that the flow of each lubricating position meets the target flow requirement and the pipeline inlet pressure is smaller than the pipeline inlet pressure limit value, the updated nozzle size is output. According to the method and the device, the size of the active lubrication pipeline of the hybrid transmission can be automatically optimized, so that the simulation operation time can be shortened, and the size optimization speed is increased.

Description

Technical Field

[0001] The present application relates to the technical field of new energy hybrid transmissions, and more specifically, to a method and device for optimizing the size of active lubrication pipelines of hybrid transmissions. Background Art

[0002] In the design and manufacturing process of new energy hybrid transmissions, reducing oil churning losses and ensuring adequate lubrication of all components are key links to improving overall performance and reliability. Existing methods usually rely on first establishing a simulation model for calculation, and then technicians manually adjust the nozzle size of each lubrication position based on the simulation results, and then simulate again, and iterate repeatedly to achieve size optimization. However, in practice, it is found that the existing methods consume manpower and material resources, take a long time, and extend the development cycle. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a method and device for optimizing the size of the active lubrication pipeline of a hybrid transmission, which can automatically optimize the size of the active lubrication pipeline of the hybrid transmission without the need for human intervention, greatly shortening the simulation operation time, which is beneficial to improving the size optimization speed and shortening the development cycle.

[0004] A first aspect of the present application provides a method for optimizing the size of an active lubrication pipeline of a hybrid transmission, comprising:

[0005] Constructing a first oil circuit model according to the hybrid transmission model to be optimized;

[0006] Perform simulation calculation according to the first oil circuit model to obtain a first simulation flow calculation result;

[0007] Obtaining demand parameters; wherein the demand parameters at least include target flow demand, pipeline inlet pressure limit and machining tool size table;

[0008] When it is determined according to the first simulation flow calculation result that the flow rate of each lubrication position does not meet the target flow requirement, adjusting 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;

[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 a set second oil circuit model;

[0010] Perform simulation calculation according to the second oil circuit model to obtain a second simulation flow calculation result;

[0011] When it is determined according to the second simulation flow calculation result that the flow at each lubrication position meets the target flow requirement, it is determined according to the second simulation flow calculation result whether the pipeline inlet pressure is less than the pipeline inlet pressure limit value;

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

[0013] Furthermore, constructing a first oil circuit model according to the hybrid transmission model to be optimized includes:

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

[0015] constructing an initial oil circuit model according to the hybrid transmission model;

[0016] Performing parameter configuration on the initial oil circuit model according to the first configuration parameters to obtain a first configuration model;

[0017] Meshing the first oil circuit model to obtain a second configuration model;

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

[0019] Further, performing simulation calculation according to the first oil circuit model to obtain a first simulation flow calculation result includes:

[0020] Initializing the simulation area of ​​the first oil circuit model to obtain an initialized oil circuit model;

[0021] Adjusting the parameters of the initialized oil circuit model to obtain a model to be simulated;

[0022] A simulation calculation is performed according to the model to be simulated to obtain a first simulation flow calculation result.

[0023] Further, the adjusting 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 includes:

[0024] Determine the simulation flow results of each lubrication position according to the first simulation flow calculation result;

[0025] Comparing the simulated flow results of each lubrication position with the target flow requirement to obtain a comparison result;

[0026] Adjusting the nozzle size at the lubrication position according to the comparison result to obtain an adjusted nozzle size;

[0027] An updated nozzle size is determined according to the machining tool size table and the adjusted nozzle size.

[0028] Furthermore, the method further comprises:

[0029] According to the updated nozzle size and the simulated flow results of each lubrication position, the flow size of each lubrication position after the updated size is predicted to obtain a flow prediction result;

[0030] Determine the effect of adjusting the nozzle size of the lubrication position on other lubrication positions according to the flow prediction result;

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

[0032] If yes, the updated nozzle size is output, and the nozzle size setting of the oil circuit model according to the updated nozzle size is performed to obtain a set second oil circuit model.

[0033] Furthermore, the method further comprises:

[0034] When it is determined that the updated nozzle size is unreasonable based on the influence of the other lubrication positions, the nozzle size of 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 an updated nozzle size.

[0035] Furthermore, after performing simulation calculation according to the second oil circuit model to obtain a second simulation flow calculation result, the method further includes:

[0036] When it is determined according to the second simulation flow calculation result that the flow of each lubrication position does not meet the target flow 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 result to obtain an updated nozzle size, and the flow size of each lubrication position after the updated size is predicted according to the updated nozzle size and the simulation flow results of each lubrication position to obtain a flow prediction result.

[0037] Furthermore, the method further comprises:

[0038] When it is determined according to the second simulation flow calculation result that the pipeline inlet pressure is not less than the pipeline inlet pressure limit, an alarm message that the pipeline inlet pressure exceeds the limit is output.

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

[0040] A construction unit, configured to construct a first oil circuit model according to a hybrid transmission model to be optimized;

[0041] A first simulation unit, used for performing simulation calculation according to the first oil circuit model to obtain a first simulation flow calculation result;

[0042] An acquisition unit, used for acquiring demand parameters; wherein the demand parameters at least include a target flow demand, a pipeline inlet pressure limit, and a machining tool size table;

[0043] a size adjustment unit, configured to adjust the size of the lubrication position nozzles 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 when it is determined that the flow rate of each lubrication position does not meet the target flow rate requirement according to the first simulation flow calculation result;

[0044] A size setting unit, for setting 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;

[0045] A second simulation unit, used for performing simulation calculation according to the second oil circuit model to obtain a second simulation flow calculation result;

[0046] A first judgment unit is used to judge 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 judged that the flow rate of each lubrication position meets the target flow rate requirement according to 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 construction unit comprises:

[0049] An acquisition subunit, used to acquire a hybrid transmission model to be optimized, a first configuration parameter, and a second configuration parameter; wherein the first configuration parameter at least includes a nozzle parameter and an initial nozzle size value; and the second configuration parameter at least includes a boundary condition parameter and an output parameter;

[0050] A construction subunit, configured to construct an initial oil circuit model according to the hybrid transmission model;

[0051] A configuration subunit, configured to perform parameter configuration on the initial oil circuit model according to the first configuration parameters to obtain a first configuration model;

[0052] A division subunit, used for performing grid division on the first oil circuit model to obtain a second configuration model;

[0053] The configuration subunit is further used to perform parameter configuration on the second configuration model according to the second configuration parameters to obtain a configured first oil circuit model.

[0054] Furthermore, the first simulation unit includes:

[0055] An initialization subunit, used to initialize the simulation area of ​​the first oil circuit model to obtain an initialized oil circuit model;

[0056] A first adjustment subunit is used to adjust the solution parameters of the initialized oil circuit model to obtain a model to be simulated;

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

[0058] Furthermore, the size adjustment unit includes:

[0059] A first determination subunit, used to determine a simulation flow result of each lubrication position according to the first simulation flow calculation result;

[0060] A comparison subunit, used for comparing the simulated flow results of each lubrication position with the target flow requirement to obtain a comparison result;

[0061] A second adjustment subunit is used to adjust the nozzle size of the lubrication position according to the comparison result to obtain an adjusted nozzle size;

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

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

[0064] A prediction unit, configured to predict the flow rate of each lubrication position after the updated size according to the updated nozzle size and the simulated flow rate results of each lubrication position, and obtain a flow rate prediction result;

[0065] A determination unit, configured to determine, based on the flow prediction result, the effect of adjusting the nozzle size of the lubrication position on other lubrication positions;

[0066] A second judgment unit, used for judging whether the updated nozzle size is reasonable according to the influence of the other lubrication positions;

[0067] The first output unit is also used 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 to obtain a set second oil circuit model.

[0068] Furthermore, the size adjustment unit is also 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 to obtain an updated nozzle size when the updated nozzle size is unreasonable.

[0069] Furthermore, the size adjustment unit is also used to 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 after the second simulation unit performs simulation calculation according to the second oil circuit model to obtain the second simulation flow calculation result, and to obtain an updated nozzle size; and trigger the prediction unit to predict the flow size of each lubrication position after the updated size according to the updated nozzle size and the simulation flow results of each lubrication position to obtain a flow prediction result.

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

[0071] The second output unit is used to output an alarm message that the pipeline inlet pressure exceeds the limit value when it is judged that the pipeline inlet pressure is not less than the pipeline inlet pressure limit value according to the second simulation flow calculation result.

[0072] A third aspect of the present application provides an electronic device, including a memory and a processor, wherein the memory is used to store a computer program, and the processor runs the computer program to enable the electronic device to execute the hybrid transmission active lubrication line size optimization method described in any one of the first aspect of the present application.

[0073] A fourth aspect of the present application provides a computer-readable storage medium storing computer program instructions, which, when read and executed by a processor, executes the hybrid transmission active lubrication pipeline size optimization method described in any one of the first aspect of the present application.

[0074] The beneficial effects of the present application are as follows: the method and device can quickly optimize the size of the active lubrication pipeline based on the program and simulation; specifically, the simulation process can be closed-loop controlled by a programmable program, the simulation result can be judged by setting conditions such as the minimum flow rate, and when the judgment result does not meet the requirements, the current nozzle size is adjusted and the simulation calculation is re-entered until the goal is achieved. Based on this, the method and device can greatly shorten the simulation operation time, improve the size optimization speed, and shorten the development cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0076] Figure 1 A schematic flow chart of a method for optimizing the size of an active lubrication pipeline of a hybrid transmission provided in an embodiment of the present application;

[0077] Figure 2 A schematic flow chart of another hybrid transmission active lubrication pipeline size optimization method provided in an embodiment of the present application;

[0078] Figure 3 A schematic diagram of an example process for optimizing the size of an active lubrication pipeline of a hybrid transmission provided in an embodiment of the present application;

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

[0080] Figure 5 A schematic diagram of the structure of another hybrid transmission active lubrication pipeline size optimization device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0081] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0082] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0083] Example 1

[0084] Please see Figure 1 , Figure 1 A flow chart of a hybrid transmission active lubrication pipeline size optimization method provided in this embodiment. The hybrid transmission active lubrication pipeline size optimization method includes:

[0085] S101. Construct a first oil circuit model according to a hybrid transmission model to be optimized.

[0086] S102, performing simulation calculation according to the first oil circuit model to obtain a first simulation flow calculation result.

[0087] S103, obtaining demand parameters; wherein the demand parameters at least include target flow demand, pipeline inlet pressure limit and machining tool size table.

[0088] S104. When it is determined according to the first simulation flow calculation result that the flow at each lubrication position does not meet the target flow requirement, the nozzle size of 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 an updated nozzle size.

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

[0090] When it is determined according to the first simulation flow calculation result that the flow at each lubrication position meets the target flow requirement, it is determined according to the first simulation flow calculation result whether the pipeline inlet pressure is less than the pipeline inlet pressure limit;

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

[0092] If not, execute step S104 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 to obtain an updated nozzle size.

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

[0094] S106. Perform simulation calculation according to the second oil circuit model to obtain a second simulation flow calculation result.

[0095] As an optional implementation, after performing simulation calculation according to the second oil circuit model to obtain a second simulation flow calculation result, the method further includes:

[0096] When it is determined based on the second simulation flow calculation result that the flow rate of each lubrication position does not meet the target flow 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 result to obtain an updated nozzle size, and the above-mentioned method is performed based on the updated nozzle size and the simulation flow results of each lubrication position to predict the flow size of each lubrication position after the updated size to obtain a flow prediction result.

[0097] S107. When it is determined according to the second simulation flow calculation result that the flow at each lubrication position meets the target flow requirement, determine according to the second simulation flow calculation result whether the pipeline inlet pressure is less than the pipeline inlet pressure limit. If so, execute step S108; if not, end this process.

[0098] S108. Output the updated nozzle size.

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

[0100] In this embodiment, the execution subject of the method may also be a smart device such as a smart phone, a tablet computer, etc., which is not limited in this embodiment.

[0101] It can be seen that 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 the need for human intervention, greatly shortening the simulation operation time, which is beneficial to improving the size optimization speed and shortening the development cycle.

[0102] Example 2

[0103] Please see Figure 2 , Figure 2 A flow chart of a hybrid transmission active lubrication pipeline size optimization method provided in this embodiment. The hybrid transmission active lubrication pipeline size optimization method includes:

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

[0105] In this embodiment, 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.

[0106] S202: construct an initial oil circuit model according to the hybrid transmission model.

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

[0108] S203: Perform parameter configuration on the initial oil circuit model according to the first configuration parameters to obtain a first configuration model.

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

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

[0111] S204, meshing the first oil circuit model to obtain a second configuration model.

[0112] In this embodiment, the method can first import the above-mentioned set model into the grid division unit; then set the encrypted grid for each nozzle and other small-sized positions; then set the boundary layer parameters; and finally, generate the volume grid.

[0113] S205 . Perform parameter configuration on the second configuration model according to the second configuration parameters to obtain a 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 lubricant physical property parameters can be set as parameters, and the lubricant physical property default values ​​can be set; finally, the inlet and outlet boundary conditions can be set, and the inlet flow rate can be set as parameters.

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

[0116] S206: Initialize the simulation area of ​​the first oil circuit model to obtain an initialized oil circuit model.

[0117] S207, adjusting the solution parameters of the initialized oil circuit model to obtain a model to be simulated.

[0118] In this embodiment, the method may first initialize the simulation region, and then adjust other solution parameters. After that, the method may start the simulation calculation.

[0119] S208. Perform simulation calculation according to the model to be simulated to obtain a 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 reads them into program variables, which is convenient for data storage and result analysis optimization.

[0121] S209, obtaining demand parameters; wherein the demand parameters at least include target flow demand, pipeline inlet pressure limit, and machining tool size table.

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

[0123] In this embodiment, the flow rate requirement of each lubrication position may be a flow rate range, which is often set as a flow rate lower limit in active lubrication calculations, and may also be set as a flow rate requirement.

[0124] In this embodiment, the flow tolerance is the error exceeding the flow lower limit. If the simulated flow is slightly less than the target flow requirement but still within the tolerance range, it can be considered that the flow meets the requirement. The tolerance is generally set to 2.5%, that is, the simulated flow is greater than 97.5% of the target requirement, which is considered to meet the requirement.

[0125] In this embodiment, the pipeline inlet pressure limit is a preset maximum pipeline inlet pressure limit, which is used to avoid oil pump failure caused by excessive pressure.

[0126] In this embodiment, the lubricant oil physical property curve includes scattered point values ​​of the lubricant oil's kinematic viscosity, dynamic viscosity, density, thermal conductivity, specific heat capacity, etc. that vary with temperature; after determining the simulated oil temperature, the scattered points need to be interpolated to determine the lubricant oil properties.

[0127] In this embodiment, the oil temperature is different according to different working conditions.

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

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

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

[0131] In this embodiment, the method can read the simulation calculation results through the program and save them in an Excel table, usually saving the flow rate and pressure results. Among them, except for the first round of simulation, the size optimization of each lubrication position is controlled by the program, and finally the adjusted size data and flow rate simulation results are output, which reduces the time of manual participation and improves the simulation efficiency.

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

[0133] S211, comparing the simulated flow results of each lubrication position with the target flow requirement to obtain a comparison result.

[0134] S212, adjusting the nozzle size of the lubrication position according to the comparison result to obtain an adjusted nozzle size.

[0135] In this embodiment, the method compares the simulated flow results of each lubrication position with the flow demand, and when the simulated flow is much larger than the required flow, considers reducing the nozzle size of the current lubrication position; when the simulated flow is much smaller than the required flow, considers increasing the nozzle size of the current lubrication position.

[0136] S213, determining an updated nozzle size according to the machining tool size table and the adjusted nozzle size.

[0137] In this embodiment, since the machining tool size is mostly fixed rather than continuously changing, it is necessary to determine the updated nozzle size according to the machining tool size table.

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

[0139] Determine whether the updated nozzle size is reasonable, if so, execute step S214.

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

[0141] According to the updated nozzle size and the simulated flow results of each lubrication position, the flow size of each lubrication position after the updated size is predicted to obtain the flow prediction result;

[0142] Determine the impact of adjusting the nozzle size at the lubrication position on other lubrication positions based on the flow prediction results;

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

[0144] If yes, the updated nozzle size is output, and the nozzle size setting of the oil circuit model according to the updated nozzle size is performed to obtain a set second oil circuit model.

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

[0146] When it is determined that the updated nozzle size is unreasonable based on the influence of other lubrication positions, the above-mentioned 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 is performed to obtain the updated nozzle size.

[0147] In this embodiment, the method can predict the flow rate of each lubrication position after the updated size through an empirical formula based on the current simulation results and the change in the nozzle size of the lubrication position before and after optimization, so as to determine whether the updated size is reasonable.

[0148] In this embodiment, after the size adjustment, when the flow rate of some outlets decreases to below the flow demand or increases significantly, the nozzle size still needs to be readjusted; if the predicted flow rate result is reasonable, the nozzle size is determined and output. It can be seen that this step can complete the judgment of the impact on other lubrication positions.

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

[0150] In this embodiment, the method can import the updated nozzle size into the model through the program and software interface, and re-perform the simulation calculation part and the numerical analysis optimization program flow until the flow rate meets the target demand. It can be seen that the method can complete the output of the nozzle size.

[0151] S215. Perform simulation calculation according to the second oil circuit model to obtain a second simulation flow calculation result.

[0152] S216. When it is determined according to the second simulation flow calculation result that the flow at each lubrication position meets the target flow requirement, determine according to the second simulation flow calculation result whether the pipeline inlet pressure is less than the pipeline inlet pressure limit. If so, execute step S217; if not, execute step S218.

[0153] In this embodiment, the method can judge the oil circuit inlet pressure when the flow rate at each lubrication position meets the demand. Under normal circumstances, the inlet pressure can be lower than the pipeline inlet pressure limit. If the inlet pressure is higher than the limit, the user is warned through the program, 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 the warning message that the inlet pressure of the pipeline exceeds the limit, and end this process.

[0156] Please see Figure 3 , Figure 3 An example flow diagram of optimizing the size of the active lubrication pipeline of a hybrid transmission is shown. Figure 3 The method mainly includes three parts: simulation calculation, numerical analysis optimization, and data setting and storage. Specifically, the method can realize automatic optimization of active lubrication pipeline size by setting simulation models, writing programs, and setting optimization goals, thereby greatly reducing operation and waiting time, improving size optimization speed, and shortening the development cycle.

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

[0158] In this embodiment, the execution subject of the method may also be a smart device such as a smart phone, a tablet computer, etc., which is not limited in this embodiment.

[0159] It can be seen that 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 the need for human intervention, greatly shortening the simulation operation time, which is beneficial to improving the size optimization speed and shortening the development cycle.

[0160] Example 3

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

[0162] A construction unit 310, configured to construct a first oil circuit model according to a hybrid transmission model to be optimized;

[0163] A first simulation unit 320, used to perform simulation calculation according to the first oil circuit model to obtain a first simulation flow calculation result;

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

[0165] The size adjustment unit 340 is 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 to obtain an updated nozzle size when it is determined that the flow rate of each lubrication position does not meet the target flow rate requirement according to the first simulation flow calculation result;

[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 a set second oil circuit model;

[0167] A second simulation unit 360 is used to perform simulation calculation according to the second oil circuit model to obtain a second simulation flow calculation result;

[0168] A first judgment unit 370 is used to judge 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 judged that the flow rate of each lubrication position meets the target flow rate requirement according to 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 hybrid transmission active lubrication pipeline size optimization device can refer to the description in Example 1 or Example 2, and will not be further elaborated in this embodiment.

[0171] It can be seen that 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 the need for human intervention, which greatly shortens the simulation operation time, is beneficial to improving the size optimization speed, and is beneficial to shortening the development cycle.

[0172] Example 4

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

[0174] A construction unit 310, configured to construct a first oil circuit model according to a hybrid transmission model to be optimized;

[0175] A first simulation unit 320, used to perform simulation calculation according to the first oil circuit model to obtain a first simulation flow calculation result;

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

[0177] The size adjustment unit 340 is 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 to obtain an updated nozzle size when it is determined that the flow rate of each lubrication position does not meet the target flow rate requirement according to the first simulation flow calculation result;

[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 a set second oil circuit model;

[0179] A second simulation unit 360 is used to perform simulation calculation according to the second oil circuit model to obtain a second simulation flow calculation result;

[0180] A first judgment unit 370 is used to judge 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 judged that the flow rate of each lubrication position meets the target flow rate requirement according to 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 construction unit 310 includes:

[0183] The 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 at least includes the nozzle parameter and the initial nozzle size value; the second configuration parameter at least includes the boundary condition parameter and the output parameter;

[0184] A construction subunit 312 is used to construct an initial oil circuit model according to the hybrid transmission model;

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

[0186] A division subunit 314 is used to perform grid division on the first oil circuit model to obtain a second configuration model;

[0187] The configuration subunit 313 is further used to perform parameter configuration on the second configuration model according to the second configuration parameters to obtain a configured first oil circuit model.

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

[0189] The initialization subunit 321 is used to initialize the simulation area of ​​the first oil circuit model to obtain an initialized oil circuit model;

[0190] The first adjustment subunit 322 is used to adjust the solution parameters of the initialized oil circuit model to obtain a model to be simulated;

[0191] The simulation subunit 323 is used to perform simulation calculation according to the model to be simulated to obtain a first simulation flow calculation result.

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

[0193] A first determination subunit 341 is used to determine the simulation flow result of each lubrication position according to the first simulation flow calculation result;

[0194] A comparison subunit 342 is used to compare the simulated flow results of each lubrication position with the target flow requirement to obtain a comparison result;

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

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

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

[0198] A prediction unit 390 is used to predict the flow rate of each lubrication position after the updated size according to the updated nozzle size and the simulated flow rate results of each lubrication position, and obtain a flow rate prediction result;

[0199] A determination unit 400, for determining the influence of adjusting the nozzle size of the lubrication position on other lubrication positions according to the flow prediction result;

[0200] The second judgment unit 410 is used to judge whether the updated nozzle size is reasonable according to the influence of other lubrication positions;

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

[0202] As an optional implementation, the size adjustment unit 340 is also 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 to obtain an updated nozzle size when the updated nozzle size is unreasonable.

[0203] As an optional implementation, the size adjustment unit 340 is also used to perform simulation calculations according to the second oil circuit model in the second simulation unit 360. After obtaining the second simulation flow calculation results, when it is determined that the flow of each lubrication position does not meet the target flow requirement based on the second simulation flow calculation results, 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 an updated nozzle size, and the prediction unit 390 is triggered to predict the flow size of each lubrication position after the updated size based on the updated nozzle size and the simulation flow results of each lubrication position to obtain a flow prediction result.

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

[0205] The second output unit 420 is used to output an alarm message that the pipeline inlet pressure exceeds the limit value 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.

[0206] In this embodiment, the explanation of the hybrid transmission active lubrication pipeline size optimization device can refer to the description in Example 1 or Example 2, and will not be further elaborated in this embodiment.

[0207] It can be seen that 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 the need for human intervention, which greatly shortens the simulation operation time, is beneficial to improving the size optimization speed, and is beneficial to shortening the development cycle.

[0208] An embodiment of the present application provides an electronic device, including a memory and a processor, wherein the memory is used to store a computer program, and the processor runs the computer program to enable the electronic device to execute the method for optimizing the size of active lubrication pipelines of a hybrid transmission in Embodiment 1 or Embodiment 2 of the present application.

[0209] An embodiment of the present 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 active lubrication pipelines of a hybrid transmission in Embodiment 1 or Embodiment 2 of the present application is executed.

[0210] In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely schematic. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices, methods and computer program products according to multiple embodiments of the present application. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a code, and the module, a program segment or a part of a code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

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

[0212] If the functions are implemented in the form of software function 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 the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0213] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0214] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0215] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A method for optimizing the size of active lubrication pipelines of a hybrid transmission, characterized in that: include: Constructing a first oil circuit model according to the hybrid transmission model to be optimized; Perform simulation calculation according to the first oil circuit model to obtain a first simulation flow calculation result; Obtaining demand parameters; wherein the demand parameters at least include target flow demand, pipeline inlet pressure limit and machining tool size table; When it is determined according to the first simulation flow calculation result that the flow rate of each lubrication position does not meet the target flow requirement, adjusting 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; 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 a set second oil circuit model; Perform simulation calculation according to the second oil circuit model to obtain a second simulation flow calculation result; When it is determined according to the second simulation flow calculation result that the flow at each lubrication position meets the target flow requirement, it is determined according to the second simulation flow calculation result whether the pipeline inlet pressure is less than the pipeline inlet pressure limit value; If so, the updated nozzle size is output.

2. The method for optimizing the size of active lubrication pipelines of a hybrid transmission according to claim 1, characterized in that: The step of constructing a first oil circuit model according to the hybrid transmission model to be optimized includes: Acquire a hybrid transmission model to be optimized, a first configuration parameter, and a second configuration parameter; wherein the first configuration parameter at least includes a nozzle parameter and an initial nozzle size value; and the second configuration parameter at least includes a boundary condition parameter and an output parameter; constructing an initial oil circuit model according to the hybrid transmission model; Performing parameter configuration on the initial oil circuit model according to the first configuration parameters to obtain a first configuration model; Meshing the first oil circuit model to obtain a second configuration model; The second configuration model is parameter configured according to the second configuration parameters to obtain a configured first oil circuit model.

3. The method for optimizing the size of active lubrication pipelines of a hybrid transmission according to claim 1, characterized in that: The performing simulation calculation according to the first oil circuit model to obtain a first simulation flow calculation result includes: Initializing the simulation area of ​​the first oil circuit model to obtain an initialized oil circuit model; Adjusting the parameters of the initialized oil circuit model to obtain a model to be simulated; A simulation calculation is performed according to the model to be simulated to obtain a first simulation flow calculation result.

4. The method for optimizing the size of active lubrication pipelines of a hybrid transmission according to claim 1, characterized in that: The step of adjusting 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 to obtain an updated nozzle size includes: Determine the simulation flow results of each lubrication position according to the first simulation flow calculation result; Comparing the simulated flow results of each lubrication position with the target flow requirement to obtain a comparison result; Adjusting the nozzle size at the lubrication position according to the comparison result to obtain an adjusted nozzle size; An updated nozzle size is determined according to the machining tool size table and the adjusted nozzle size.

5. The method for optimizing the size of active lubrication pipelines of a hybrid transmission according to claim 4, characterized in that: The method further comprises: According to the updated nozzle size and the simulated flow results of each lubrication position, the flow size of each lubrication position after the updated size is predicted to obtain a flow prediction result; Determine the effect of adjusting the nozzle size of the lubrication position on other lubrication positions according to the flow prediction result; Determine whether the updated nozzle size is reasonable based on the impact of other lubrication positions; If yes, the updated nozzle size is output, and the nozzle size setting of the oil circuit model according to the updated nozzle size is performed to obtain a set second oil circuit model.

6. The method for optimizing the size of active lubrication pipelines of a hybrid transmission according to claim 5, characterized in that: The method further comprises: When it is determined that the updated nozzle size is unreasonable based on the influence of the other lubrication positions, the nozzle size of 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 an updated nozzle size.

7. The method for optimizing the size of active lubrication pipelines of a hybrid transmission according to claim 5, characterized in that: After performing simulation calculation according to the second oil circuit model to obtain a second simulation flow calculation result, the method further includes: When it is determined according to the second simulation flow calculation result that the flow of each lubrication position does not meet the target flow 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 result to obtain an updated nozzle size, and the flow size of each lubrication position after the updated size is predicted according to the updated nozzle size and the simulation flow results of each lubrication position to obtain a flow prediction result.

8. The method for optimizing the size of active lubrication pipelines of a hybrid transmission according to claim 5, characterized in that: The method further comprises: When it is determined according to the second simulation flow calculation result that the pipeline inlet pressure is not less than the pipeline inlet pressure limit, an alarm message that the pipeline inlet pressure exceeds the limit is output.

9. A hybrid transmission active lubrication pipeline size optimization device, characterized in that: 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, used for performing simulation calculation according to the first oil circuit model to obtain a first simulation flow calculation result; An acquisition unit, used for acquiring demand parameters; wherein the demand parameters at least include a target flow demand, a pipeline inlet pressure limit, and a machining tool size table; a size adjustment unit, configured 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 to obtain an updated nozzle size when it is determined that the flow rate of each lubrication position does not meet the target flow rate requirement according to the first simulation flow calculation result; A size setting unit, for setting 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, used for performing simulation calculation according to the second oil circuit model to obtain a second simulation flow calculation result; A first judgment unit is used to judge 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 judged that the flow rate of each lubrication position meets the target flow rate requirement according to the second simulation flow calculation result; 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.

10. An electronic device, characterized in that: The electronic device comprises a memory and a processor, wherein the memory is used to store a computer program, and the processor runs the computer program to enable the electronic device to execute the method for optimizing the size of active lubrication lines of a hybrid transmission according to any one of claims 1 to 8.

11. A readable storage medium, characterized in that: The readable storage medium stores computer program instructions, and 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 according to any one of claims 1 to 8 is executed.

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