Transmission lubrication analysis method and system, storage medium and equipment

Abstract

The invention provides a transmission lubrication analysis method and system, a storage medium and equipment, and the method comprises the steps: building a pipeline geometric model through the basic information of a to-be-tested transmission sample box, weighing the information of each flow working condition into the corresponding pipeline geometric model, building a hydrodynamic model of the to-be-tested transmission sample box, and carrying out the measurement of the to-be-tested transmission sample box. The method comprises the following steps: acquiring a to-be-tested transmission sample box, performing distribution calculation on each pipeline flow in the to-be-tested transmission sample box through a wired volumetric method to obtain a calculation result, determining whether to perform simulation operation on a lubrication process in a fluid dynamic model or not according to the calculation result, then simulating the lubrication process in the fluid dynamic model through a meshless method, and outputting a simulation result. According to the method, simulation of the transmission is provided, accurate, efficient, real-time and quantitative monitoring of each flow and lubrication state of the hybrid power transmission is realized, guidance is provided for design and test, the research and development efficiency is improved, and the research and development cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of transmission fluid simulation analysis, and in particular to a transmission lubrication analysis method, system, storage medium and equipment. Background Art

[0002] The hybrid transmission uses different power coupling modes between the engine and the motor to maintain the engine and the motor in a high-efficiency range, thereby comprehensively improving the power and economy. The active lubrication system is widely used in hybrid transmissions with its high integration, efficient cooling effect, low oil volume and low oil churning loss. Sufficient lubricating oil is a necessary condition to ensure the normal operation of motors, bearings, gears, etc.

[0003] At present, in the development of active lubrication systems for hybrid transmissions, after the transmission prototype is produced, repeated tests are usually required to verify the lubrication flow, and no targeted test system has been developed. As a result, in current experimental operations, it is necessary to continuously adjust and improve various lubrication structures according to the verified lubrication flow. This process consumes more experimental resources and manpower costs, and the corresponding modification and adjustment cycle is longer, which also reduces R&D efficiency to a certain extent and increases R&D costs. Summary of the invention

[0004] Based on this, the purpose of the present invention is to provide a transmission lubrication analysis method, system, storage medium and equipment, so as to fundamentally solve the problem that a targeted test system has not been developed in the current development of hybrid transmission active lubrication systems, which has reduced R&D efficiency and increased R&D costs to a certain extent.

[0005] A transmission lubrication analysis method according to an embodiment of the present invention includes: Acquire basic information of the transmission sample box to be tested, the basic information at least including information of each pipeline and flow condition information corresponding to each pipeline information, and construct a pipeline geometric model based on the pipeline information; Weighting each of the flow condition information into the corresponding pipeline geometric model, establishing a fluid dynamic model of the transmission sample box to be tested, and submitting the calculation to determine whether the calculation result meets the preset requirements; If so, the lubrication process in the fluid dynamics model is simulated by a gridless method, and the simulation results are output to be determined as the simulated lubrication analysis data of the transmission sample box to be tested.

[0006] Furthermore, the pipeline information at least includes the geometric models of the main oil circuit and the oil suction end of the gearbox to be tested, wherein the main oil circuit is a connecting pipeline from the hydraulic oil pump outlet to each nozzle, and the oil suction end is a connecting pipeline from the oil suction port to the oil inlet of the hydraulic pump.

[0007] Furthermore, the step of weighting each of the flow condition information into the corresponding pipeline geometric model to establish the fluid dynamic model of the transmission sample box to be tested includes: The flow condition information is added to the grid algorithm, the geometric models of the main line and the oil suction end are processed respectively, and the flow distribution model of the main line and the fluid dynamic model of the oil suction end are built, and the relevant parameters are determined according to the actual working condition of the transmission sample box to be tested; The relevant parameters include at least oil temperature, oil quality and total flow rate.

[0008] Furthermore, the calculation is submitted to determine whether the calculation result meets the preset requirements: Based on the finite volume algorithm, and in combination with the flow distribution model of the main line, the fluid dynamics model of the oil suction end and the relevant parameters, the flow distribution calculation of the transmission sample box to be tested is implemented to obtain the pressure loss load spectrum between the main line and the oil suction end, and the lubrication flow of each branch extending along the main line, and it is determined whether the pressure loss load spectrum and the lubrication flow of each branch meet the preset conditions.

[0009] Furthermore, the step of simulating the lubrication process in the fluid dynamics model by a gridless method and outputting the simulation result to determine the simulated lubrication analysis data of the transmission sample box to be tested includes: Based on the gridless method, the lubrication flow of each branch is used as the flow inlet, and a lubrication model of the transmission sample to be tested is established. The movements of the motor rotors, gears, shafts and other moving parts in the actual working conditions are set in turn. After all the settings are loaded, the lubrication process is simulated to obtain the simulated lubrication analysis data of the transmission sample to be tested.

[0010] Furthermore, after the step of simulating the lubrication process in the fluid dynamics model by the gridless method and outputting the simulation result to determine it as the simulated lubrication analysis data of the transmission sample box to be tested, the following steps are further included: Performing post-processing evaluation on the simulated lubrication analysis data of the transmission sample to be tested, and determining whether the evaluation result meets the preset requirements; If so, it is determined that the transmission sample to be tested is qualified. A transmission lubrication analysis system according to an embodiment of the present invention comprises: A model building module, used to obtain basic information of the transmission sample box to be tested, the basic information at least including information of each pipeline and flow condition information corresponding to each pipeline information, and to build a pipeline geometric model based on the pipeline information; An evaluation and analysis module, used for weighting each of the flow condition information into the corresponding pipeline geometric model, establishing a fluid dynamic model of the transmission sample box to be tested, and submitting the calculation to determine whether the calculation result meets the preset requirements, and if so, executing the first execution module; The first execution module is used to simulate the lubrication process in the fluid dynamics model by using a gridless method, and output the simulation results to determine the simulated lubrication analysis data of the transmission sample box to be tested.

[0011] The present invention also provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the above-mentioned transmission lubrication analysis method is implemented.

[0012] The present invention also proposes a transmission lubrication analysis device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, to implement the above-mentioned transmission lubrication analysis method.

[0013] Compared with the prior art: the transmission lubrication analysis method in the above-mentioned embodiment of the present invention constructs a pipeline geometry model through the basic information of the transmission sample box to be tested, weights each flow condition information to the corresponding pipeline geometry model, establishes a fluid dynamic model of the transmission sample box to be tested, and distributes and calculates each pipeline flow in the transmission sample box to be tested through the wired volume method to obtain a calculation result, and determines whether to simulate the lubrication process in the fluid dynamics model according to the calculation result. After that, the lubrication process in the fluid dynamics model is simulated through the gridless method, and the simulation result is output, which is determined as the simulated lubrication analysis data of the transmission sample box to be tested, and the final result is obtained, and a simulation simulation of the transmission is proposed, and the simulation evaluation of the sample box is completed in the early stage of transmission preparation, which saves transmission development time and improves R&D efficiency. It solves the problem that in the current development of hybrid transmission active lubrication system, a targeted test system has not been developed, which reduces R&D efficiency to a certain extent and increases R&D cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a flow chart of a transmission lubrication analysis method in a first embodiment of the present invention; Figure 2 is a schematic structural diagram of a transmission lubrication analysis system in a third embodiment of the present invention; Figure 3 It is a schematic structural diagram of a transmission lubrication analysis device in a fourth embodiment of the present invention.

[0015] The following specific implementations will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0016] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0017] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0019] Embodiment 1 See also Figure 1 , shown is a transmission lubrication analysis method in a first embodiment of the present invention, and the method specifically includes steps S01 to S03.

[0020] Step S01, obtaining basic information of a transmission sample box to be tested, the basic information at least including information of each pipeline and flow condition information corresponding to each pipeline information, and constructing a pipeline geometric model based on the pipeline information.

[0021] In the specific implementation, the basic information of the transmission sample box to be tested is obtained through a computer, and the acquisition method can be data import or manual input by the operator according to the basic information of the current transmission sample box to be tested, wherein the basic information at least includes the information of each pipeline in the transmission sample box to be tested, and the flow condition information corresponding to each pipeline. It should be noted that the pipeline information at least includes the main oil circuit and the geometric model of the suction end of the transmission to be tested, wherein the main oil circuit is a connecting pipeline from the hydraulic oil pump outlet to each nozzle, and the suction end is a connecting pipeline from the suction port to the hydraulic pump inlet, and the flow condition information of the pipeline includes the pipeline shape and internal Diameter size, connectivity, and the basic adaptive flow of the pipeline calculated in combination with the pipeline shape, inner diameter size and connectivity, that is, the flow condition information of the pipeline. It is further explained that the flow condition information is only used as the reference flow data of the pipeline when it leaves the factory, which can be understood by those skilled in the art, and is imported as a basic parameter for subsequent model construction. The specific total flow of the subsequent transmission sample box to be tested needs to be finally determined after specific analysis of each connected pipeline. After that, the pipeline geometric model of the transmission sample box to be tested is constructed in combination with the basic information of the transmission sample box to be tested, which can be understood as establishing a geometric model of the main oil circuit and the oil suction end.

[0022] Step S02, weighting each flow condition information to the corresponding pipeline geometry model, establishing the fluid dynamic model of the transmission sample box to be tested, and submitting the calculation to determine whether the calculation result meets the preset requirements. If so, execute step S03, if not, execute step S01.

[0023] In the specific implementation, the reference flow data of each pipeline in the main oil circuit and the oil suction end calculated in step S1 is imported into the corresponding pipeline geometry model. It can be understood that the pipeline geometry model in the constructed transmission sample box to be tested is assigned, and the fluid dynamic model of the transmission sample box to be tested is formed. Then, based on the finite volume algorithm software, such as STAR-CCM+, the detailed calculation of the flow distribution of each pipeline in the fluid dynamic model is performed. In addition, in the assignment process, in order to ensure the accuracy of subsequent calculation results, relevant parameters such as oil temperature, oil quality, and total flow can also be added, where the total flow is the sum of the required flow of each component obtained according to empirical formulas and design manuals. The above-mentioned acquisition of relevant parameters is common knowledge of technicians in this field. In addition, STAR-CCM+ is a powerful computational fluid dynamics (CFD) software that is widely used in aerospace, automotive, biomedicine, construction, chemistry, electronic devices, energy, oil and gas, environment, ships and rotating machinery and other industries. Its powerful mesh generation tools, complete physical models and advanced CFD technology enable it to cope with challenges in various fluid calculation fields. At the same time, the software is equipped with the latest mesh generation technology created by CD-adapco, which can complete a series of operations such as complex shape data input, surface preparation (such as wrapping, simplifying geometry, automatic hole filling, preventing component contact, checking leakage, etc.), surface mesh reconstruction and automatic body mesh generation. It supports multiple mesh types such as polyhedral mesh, hexahedral core mesh, dodecahedral core mesh, tetrahedral mesh, etc. Among them, the polyhedral mesh can achieve a 3~10 times improvement in computing performance compared to the tetrahedral mesh while maintaining the same calculation accuracy. Then, the pipeline flow distribution is performed through STAR-CCM+ to obtain the pressure loss load spectrum between the main pipeline and the oil suction end, as well as the lubrication flow of each branch extending along the main pipeline.

[0024] Furthermore, for judging whether the calculation results meet the preset requirements, specifically, judging whether the pressure loss load spectrum and the lubrication flow of each branch meet the preset conditions, it should be noted that for whether the amount of lubricating oil meets the preset conditions, the preset conditions are all provided with reference values, and the reference values ​​are all bound to the corresponding transmission sample box models, which are common knowledge in the field and will not be elaborated in detail here. Afterwards, if the pressure loss load spectrum and the lubrication flow of each branch meet the preset conditions, step S03 is executed; if they do not meet the preset conditions, step S01 is returned to be executed, and adjustments are made based on the abnormal pipelines and continuous judgments are made.

[0025] Step S03, simulating the lubrication process in the fluid dynamics model by using a gridless method, and outputting the simulation results to determine the simulated lubrication analysis data of the transmission sample to be tested.

[0026] In the specific implementation, the lubrication flow of each branch obtained in step S02 is used as the flow inlet, and based on the gridless method, a computational fluid dynamics lubrication model of the transmission sample to be tested is established, and the movement of each motor rotor, gear, shaft and other moving parts in the actual working condition is set in turn. After all the settings are loaded, the lubrication process is simulated, wherein the gridless method software can be PreonLab, and PreonLab can model the structure in the gearbox in detail without structural simplification, thereby ensuring the consistency between the simulation and the experiment. This capability enables users to accurately simulate and analyze complex structures in the gearbox, such as gear trains, oil guide grooves, oil accumulation grooves, etc., such as ray tracing technology: PreonLab uses advanced ray tracing technology to accurately simulate light, and has built-in color properties of many commonly used materials, such as water, engine oil, glass, steel and rubber. This enables the software to output visual effects close to real materials and improve the authenticity of the simulation.

[0027] In summary, the transmission lubrication analysis method in the above-mentioned embodiment of the present invention constructs a pipeline geometry model through the basic information of the transmission sample box to be tested, weights each flow condition information to the corresponding pipeline geometry model, establishes a fluid dynamics model of the transmission sample box to be tested, and distributes and calculates each pipeline flow in the transmission sample box to be tested through the wired volume method to obtain a calculation result, and determines whether to simulate the lubrication process in the fluid dynamics model according to the calculation result. After that, the lubrication process in the fluid dynamics model is simulated through the gridless method, and the simulation result is output, which is determined as the simulated lubrication analysis data of the transmission sample box to be tested, and the final result is obtained, and a simulation simulation of the transmission is proposed, which realizes accurate and efficient real-time quantitative monitoring of each flow and lubrication state of the hybrid transmission, provides guidance for design and experiment, improves R&D efficiency, reduces R&D cost, and solves the problem that no targeted test system has been developed in the development of active lubrication system of hybrid transmission, which reduces R&D efficiency to a certain extent and increases R&D cost.

[0028] Embodiment 2 See also Figure 2 , shown is a transmission lubrication analysis method in a second embodiment of the present invention, and the method shown specifically includes steps S11 to S14.

[0029] Step S11, obtaining basic information of the transmission sample box to be tested, wherein the basic information at least includes information of each pipeline and flow condition information corresponding to each pipeline information, and constructing a pipeline geometric model based on the pipeline information.

[0030] Step S12, weighting each of the flow condition information into the corresponding pipeline geometric model, establishing a fluid dynamic model of the transmission sample box to be tested, and submitting the calculation to determine whether the calculation result meets the preset requirements. If so, executing step S13.

[0031] Step S13, simulating the lubrication process in the fluid dynamics model by using a gridless method, and outputting the simulation results to determine the simulated lubrication analysis data of the transmission sample box to be tested.

[0032] Step S14, performing post-processing evaluation on the simulated lubrication analysis data of the transmission sample to be tested, and determining whether the evaluation result meets the preset requirements. If so, executing step S15, if not, executing step S13.

[0033] Step S15, determining whether the transmission sample to be tested is qualified.

[0034] The specific implementation of step S14 to step S15 needs to be explained, and the post-processing evaluation includes setting a monitoring surface to monitor the lubrication flow of each component; counting the oil infiltration area and oil infiltration time of core components such as the motor, the flow uniformity and injection posture of each nozzle of the motor, and judging whether the simulated lubrication analysis data of the transmission sample to be tested meets the preset requirements. The preset requirements are common knowledge in the field and are not elaborated here. When it is judged that the requirements are not met, the corresponding local digital model of the transmission is optimized and modified, and step S13 is repeated until the preset requirements are met, and then the technical report is compiled and the design is frozen.

[0035] Embodiment 3 Another aspect of the present invention is to provide a transmission lubrication analysis system. Figure 3 , shown is a transmission lubrication analysis system in a third embodiment of the present invention, the system comprising: The model building module 11 is used to obtain basic information of the transmission sample box to be tested, wherein the basic information at least includes information of each pipeline and flow condition information corresponding to each pipeline information, and build a pipeline geometric model based on the pipeline information; An evaluation and analysis module 12 is used to weight each of the flow condition information to the corresponding pipeline geometric model, establish a fluid dynamic model of the transmission sample box to be tested, and submit calculations to determine whether the calculation results meet the preset requirements. If so, execute the first execution module 13; The first execution module 13 is used to simulate the lubrication process in the fluid dynamics model by using a gridless method, and output the simulation results to be determined as the simulated lubrication analysis data of the transmission sample box to be tested.

[0036] Furthermore, in some optional embodiments of the present invention, a post-processing module is also included: The post-processing module is used to perform post-processing evaluation on the simulated lubrication analysis data of the transmission sample to be tested, and determine whether the evaluation result meets the preset requirements. If so, the second execution module is executed, and if not, the first execution module 13 is executed.

[0037] The second execution module is used to determine whether the transmission sample to be tested is qualified.

[0038] Embodiment 4 Another aspect of the present invention also provides a transmission lubrication analysis device, see Figure 3 , shown is a transmission lubrication analysis device according to a fourth embodiment of the present invention, comprising a memory 20, a processor 10, and a computer program 30 stored in the memory and executable on the processor, wherein the processor 10 implements the transmission lubrication analysis method as described above when executing the computer program 30.

[0039] Among them, the transmission lubrication analysis device can specifically be a processor 10, which in some embodiments can be a central processing unit (CPU), a controller, a microcontroller, a microprocessor or other data processing chip, used to run the program code stored in the memory 20 or process data, such as executing access restriction programs.

[0040] The memory 20 includes at least one type of readable storage medium, which includes flash memory, hard disk, multimedia card, card-type memory (e.g., SD or DX memory, etc.), magnetic memory, disk, optical disk, etc. In some embodiments, the memory 20 can be an internal storage unit of the plane design review system, such as the hard disk of the transmission lubrication analysis system. In other embodiments, the memory 20 can also be an external storage system of the transmission lubrication analysis system, such as a plug-in hard disk equipped on the transmission lubrication analysis system, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card, etc. Further, the memory 20 can also include both an internal storage unit and an external storage system of the transmission lubrication analysis system. The memory 20 can be used not only to store application software and various types of data installed in the transmission lubrication analysis system, but also to temporarily store data that has been output or is to be output.

[0041] It should be pointed out that Figure 3 The structure shown does not constitute a limitation on the transmission lubrication analysis system. In other embodiments, the transmission lubrication analysis system may include fewer or more components than shown in the figure, or combine certain components, or arrange the components differently.

[0042] The embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon, and when the program is executed by a processor, the transmission lubrication analysis method as described above is implemented.

[0043] Those skilled in the art will appreciate that the logic and / or steps represented in the flowchart or otherwise described herein, for example, may be considered as an ordered list of executable instructions for implementing logical functions, and may be embodied in any computer-readable medium for use by an instruction execution system, system or device (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, system or device and execute instructions), or in conjunction with such instruction execution systems, systems or devices. For purposes of this specification, a "computer-readable medium" may be any system that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, system or device, or in conjunction with such instruction execution systems, systems or devices.

[0044] More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic systems), a portable computer disk cartridge (magnetic systems), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber system, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be a paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering or, if necessary, processing in another suitable manner, and then stored in a computer memory.

[0045] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or a combination thereof: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0047] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A transmission lubrication analysis method, characterized in that: The method comprises: Acquire basic information of the transmission sample box to be tested, the basic information at least including information of each pipeline and flow condition information corresponding to each pipeline information, and construct a pipeline geometric model based on the pipeline information; Weighting each of the flow condition information into the corresponding pipeline geometric model, establishing a fluid dynamic model of the transmission sample box to be tested, and submitting the calculation to determine whether the calculation result meets the preset requirements; If so, the lubrication process in the fluid dynamics model is simulated by a gridless method, and the simulation results are output to be determined as the simulated lubrication analysis data of the transmission sample box to be tested.

2. A transmission lubrication analysis method according to claim 1, characterized in that: The pipeline information at least includes the geometric models of the main oil circuit and the oil suction end of the gearbox to be tested, wherein the main oil circuit is a connecting pipeline from the hydraulic oil pump outlet to each nozzle, and the oil suction end is a connecting pipeline from the oil suction port to the oil inlet of the hydraulic pump.

3. A transmission lubrication analysis method according to claim 2, characterized in that: The step of weighting each of the flow condition information into the corresponding pipeline geometric model to establish the fluid dynamic model of the transmission sample box to be tested comprises: The flow condition information is added to the grid algorithm, the geometric models of the main line and the oil suction end are processed respectively, and the flow distribution model of the main line and the fluid dynamic model of the oil suction end are built, and the relevant parameters are determined according to the actual working condition of the transmission sample box to be tested; The relevant parameters include at least oil temperature, oil quality and total flow rate.

4. A transmission lubrication analysis method according to claim 3, characterized in that: The calculation is submitted to determine whether the calculation result meets the preset requirements: Based on the finite volume algorithm, and in combination with the flow distribution model of the main line, the fluid dynamics model of the oil suction end and the relevant parameters, the flow distribution calculation of the transmission sample box to be tested is implemented to obtain the pressure loss load spectrum between the main line and the oil suction end, and the lubrication flow of each branch extending along the main line, and it is determined whether the pressure loss load spectrum and the lubrication flow of each branch meet the preset conditions.

5. A transmission lubrication analysis method according to claim 4, characterized in that: The step of simulating the lubrication process in the fluid dynamics model by a gridless method and outputting the simulation result to determine the simulated lubrication analysis data of the transmission sample box to be tested comprises: Based on the gridless method, the lubrication flow of each branch is used as the flow inlet, and a lubrication model of the transmission sample to be tested is established. The movements of the motor rotors, gears, shafts and other moving parts in the actual working conditions are set in turn. After all the settings are loaded, the lubrication process is simulated to obtain the simulated lubrication analysis data of the transmission sample to be tested.

6. A transmission lubrication analysis method according to claim 1, characterized in that: After the step of simulating the lubrication process in the fluid dynamics model by the gridless method and outputting the simulation result to determine it as the simulated lubrication analysis data of the transmission sample box to be tested, the following steps are further included: Performing post-processing evaluation on the simulated lubrication analysis data of the transmission sample to be tested, and determining whether the evaluation result meets the preset requirements; If so, it is determined that the transmission sample to be tested is qualified.

7. A transmission lubrication analysis system, characterized in that: The system comprises: A model building module, used to obtain basic information of the transmission sample box to be tested, the basic information at least including information of each pipeline and flow condition information corresponding to each pipeline information, and to build a pipeline geometric model based on the pipeline information; An evaluation and analysis module, used for weighting each of the flow condition information into the corresponding pipeline geometric model, establishing a fluid dynamic model of the transmission sample box to be tested, and submitting the calculation to determine whether the calculation result meets the preset requirements, and if so, executing the first execution module; The first execution module is used to simulate the lubrication process in the fluid dynamics model by using a gridless method, and output the simulation results to determine the simulated lubrication analysis data of the transmission sample box to be tested.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the transmission lubrication analysis method as described in any one of claims 1 to 6 is implemented.

9. A transmission lubrication analysis device, characterized in that: The invention comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the transmission lubrication analysis method according to any one of claims 1 to 6 is implemented.

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