Vehicle-mounted air inlet system simulation analysis method and device, electronic equipment and storage medium

Abstract

The invention discloses a vehicle-mounted air inlet system simulation analysis method, and relates to the field of vehicle-mounted display, and the method comprises the steps: obtaining an input parameter model of an air inlet system, and constructing a physical model of the air inlet system; obtaining a model preset rule; the input parameter model of the air inlet system is subjected to targeted conversion, and a unified adaptive conversion model is generated; performing one-dimensional discrete processing on the uniformly adapted conversion model to generate one-dimensional discrete data; performing acoustic calculation analysis on the one-dimensional discrete data, connecting an inlet and an outlet of the model, configuring calculation parameters, executing acoustic calculation, and generating an acoustic calculation result; acquiring a preset performance index parameter; according to a comparison result of the acoustic calculation result and the preset performance index parameter; judging whether the acoustic calculation result meets the preset performance index parameter or not; and if not, the input parameters of the air inlet system are adjusted according to the comparison result, manpower and material resources are greatly saved in order to avoid the air inlet noise problem, and the product development time is shortened.

Description

Technical Field

[0001] The present application relates to the technical field of automobile engine intake system noise control, and in particular to a vehicle-mounted intake system simulation analysis method, a vehicle-mounted intake system simulation analysis device, electronic equipment, storage medium, and detection platform. Background Art

[0002] As users' demands for driving comfort continue to increase, intake noise, as a key component of vehicle noise, is receiving increasing attention. Therefore, it is essential to control the acoustic performance of the intake system during the product development phase.

[0003] As a key component of the engine, the performance of the intake system directly impacts the engine's intake efficiency, power output, and emissions. Transmission loss is a key indicator of the intake system's acoustic performance, and accurate and rapid calculation of this loss is crucial for optimal intake system design. Traditional intake system transmission loss design and optimization often relies on expensive testing equipment, resulting in long and costly testing cycles and difficulties meeting the rapid iteration requirements of product development. With the rapid advancement of computer technology, simulation has become increasingly popular for calculating intake system transmission loss. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a vehicle-mounted air intake system simulation and analysis method, a vehicle-mounted air intake system simulation and analysis device, electronic equipment, storage medium and detection platform, so as to improve the accuracy and efficiency of the intake system transmission loss calculation and provide strong support for the optimal design of the intake system.

[0005] The present invention provides the following solutions:

[0006] According to one aspect of the present invention, a vehicle-mounted air intake system simulation analysis method is provided, comprising the following steps:

[0007] Obtain the input parameter model of the intake system and build a physical model of the intake system;

[0008] Obtaining model preset rules, and checking the physical model of the intake system according to the model preset rules;

[0009] Perform targeted conversion on the input parameter model of the intake system to generate a unified and adaptive conversion model;

[0010] Perform one-dimensional discrete processing on the uniformly adapted conversion model, set discrete parameters, and generate one-dimensional discrete data;

[0011] Perform acoustic calculation and analysis on one-dimensional discrete data, connect the model import and export, configure calculation parameters and perform acoustic calculations to generate acoustic calculation results;

[0012] Get preset performance indicator parameters;

[0013] According to the comparison results of acoustic calculation results and preset performance index parameters,

[0014] Determining whether the acoustic calculation results meet the preset performance index parameters;

[0015] If not, adjust the input parameters of the intake system according to the comparison results.

[0016] Further, including:

[0017] The input model parameters of the intake system include: air filter, air flow meter, intake pressure sensor, throttle body, additional air valve, idle speed control valve, resonant cavity, power cavity and structural data of intake manifold.

[0018] Further, including:

[0019] Adjusting the physical model of the intake system according to the comparison result includes: modifying the model structure, reselecting a conversion method, or adjusting discrete parameters.

[0020] Further, including:

[0021] Converting the physical model of the intake system includes: modifying the imported model;

[0022] The correction includes: merging separated parts, deleting redundant parts and extracting end faces.

[0023] Further, including:

[0024] The input model parameters of the intake system are connected in sequence.

[0025] Further, including:

[0026] Targeted conversions include: dividing and converting cavity-type components in specific directions, replacing special component materials with equivalent resistive materials, and using diverters to convert pipelines with complex structures.

[0027] According to two aspects of the present invention, a vehicle-mounted air intake system simulation and analysis device is provided, the device comprising:

[0028] A model building unit, used to obtain an input parameter model of the intake system and build a physical model of the intake system;

[0029] a model verification unit, configured to obtain a model preset rule and check the physical model of the intake system according to the model preset rule;

[0030] A model conversion unit, used to perform targeted conversion on the input parameter model of the intake system to generate a unified and adaptive conversion model;

[0031] A model discretization unit is used to perform one-dimensional discretization processing on the uniformly adapted conversion model, set discrete parameters, and generate one-dimensional discrete data;

[0032] The acoustic calculation unit is used to perform acoustic calculation analysis on one-dimensional discrete data, connect the model import and export, configure calculation parameters, perform acoustic calculations, and generate acoustic calculation results;

[0033] A model comparison unit is used to obtain preset performance index parameters; based on the comparison result of the acoustic calculation result and the preset performance index parameters, determine whether the acoustic calculation result meets the preset performance index parameters; if not, feed the comparison result back to the physical model of the intake system; and adjust the input parameters of the intake system according to the comparison result.

[0034] According to three aspects of the present invention, there is provided an electronic device, comprising: a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other via the communication bus;

[0035] A computer program is stored in the memory. When the computer program is executed by the processor, the processor executes the steps of a vehicle air intake system simulation analysis method.

[0036] According to four aspects of the present invention, a computer-readable storage medium is provided, which stores a computer program executable by an electronic device. When the computer program runs on the electronic device, the electronic device executes the steps of a vehicle intake system simulation analysis method.

[0037] According to five aspects of the present invention, there is provided a test platform comprising: electronic equipment for use in the steps of a vehicle intake system simulation analysis method;

[0038] a processor, the processor running a program, and executing steps of a vehicle air intake system simulation analysis method based on data output by the electronic device when the program is running;

[0039] The storage medium is used to store a program, and when the program is running, it executes the steps of a vehicle intake system simulation analysis method for data output from an electronic device.

[0040] Through the above solution, the following beneficial technical effects are achieved:

[0041] This application uses wool-like resistive materials to perform equivalent modeling of the filter element, thereby achieving the establishment of a higher-precision air filter model.

[0042] The present application further improves the accuracy of the converted model by adopting a preset conversion principle between component models of the intake system.

[0043] This application uses simulation to analyze and calculate the transmission loss of the intake system, and grasps the noise reduction performance of the intake system in advance, which greatly saves manpower and material resources to avoid the intake noise problem and shortens product development time. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is a flow chart of a vehicle air intake system simulation analysis method provided by one or more embodiments of the present invention.

[0045] Figure 2 This is a structural diagram of a vehicle-mounted air intake system simulation and analysis device provided by one or more embodiments of the present invention.

[0046] Figure 3 It is a flow chart of a one-dimensional simulation analysis method of an intake system transmission loss according to a specific embodiment of the present invention.

[0047] Figure 4 This is a comparison chart of one-dimensional simulation results and test results of the transmission loss of a heavy-duty commercial vehicle air filter provided by a specific embodiment of the present invention.

[0048] Figure 5 This is a structural block diagram of an electronic device for a vehicle-mounted air intake system simulation analysis method provided by one or more embodiments of the present invention. DETAILED DESCRIPTION

[0049] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0050] Figure 1 This is a flow chart of a fuel cell stack assembly diagnostic method provided by one or more embodiments of the present invention.

[0051] like Figure 1 As shown, the following steps are included:

[0052] Step S1, obtaining an input parameter model of the intake system and constructing a physical model of the intake system;

[0053] Step S2, obtaining a model preset rule, and checking the physical model of the intake system according to the model preset rule;

[0054] Specifically, determine the three-dimensional structural model of the intake system to be calculated. The intake system consists of an air filter, air flow meter, intake pressure sensor, throttle body, additional air valve, idle speed control valve, resonant chamber, power chamber, intake manifold, etc. The calculated structure involved in this invention includes all or part of the intake system's various intake ducts, air filter, filter element, muffler, etc. The model accuracy must be checked before calculation.

[0055] Step S3, performing targeted conversion on the input parameter model of the intake system to generate a unified and adaptive conversion model;

[0056] Specifically, for 3D models that require model conversion, different conversion methods are used for different structures. It is recommended to follow the following principles during conversion:

[0057] ① For air filters, they need to be converted into cavities and cut along the direction of the filter element during conversion, which helps improve conversion accuracy;

[0058] ② For the filter element, use resistive material wool to replace the filter element material through reasonable equivalent;

[0059] ③ For the relatively simple structure of the intake pipe, it can be converted into a straight pipe, a curved pipe, etc.

[0060] ④ For pipes with simple structures but long dimensions and varying diameters, they can be appropriately divided and converted separately. It should be noted that for pipe fittings that are a combination of elbows and straight pipes, there should be no straight pipes in the elbow section after cutting to ensure conversion accuracy;

[0061] ⑤ For intake ducts with complex structures, such as intake ducts, splitters can be used for conversion. If the shape changes significantly before and after the conversion, it is necessary to ensure that the volume does not change as much as possible, that is, the conversion should try to preserve the volume rather than the shape.

[0062] ⑥ For pipe fittings with irregular end face shapes, the end faces should be set to arbitrary shapes during conversion.

[0063] Step S4, performing one-dimensional discrete processing on the uniformly adapted conversion model, setting discrete parameters, and generating one-dimensional discrete data;

[0064] Specifically, the conversion model is discretized into a one-dimensional staggered grid. The definition of the grid thickness is recommended to follow the following principles:

[0065] ① For internal combustion engine performance calculation, the discrete length of the intake system = 0.4 × cylinder diameter, and the discrete length of the exhaust system = 0.55 × cylinder diameter;

[0066] ② For noise performance calculation, discrete length = 0.2 × cylinder diameter;

[0067] ③ For shell components, discrete length = 30-40 mm;

[0068] ④ Try to make the length of the grid uniform to achieve a balance between simulation accuracy and simulation speed.

[0069] In the transmission loss calculation of the intake system targeted by the present invention, the discrete length can be set to 0.2×cylinder diameter, and the discrete length of the air filter can be set to between 30 and 40 mm.

[0070] Transmission loss calculations require capturing the fluctuations and reflection characteristics of the airflow in the pipe. A smaller discrete length (0.2×cylinder diameter, compared to 0.4×cylinder diameter in a traditional intake system) allows for a finer mesh, allowing for more accurate analysis of the propagation of sound waves in the pipe (such as pressure fluctuations and impedance changes), while avoiding high-frequency signal distortion caused by an overly large mesh size.

[0071] The interior of an air filter contains a complex structure including a filter element and a cavity. The discrete length of 30-40mm falls within the conventional optimization range of the housing assembly:

[0072] If the discrete length is too small (e.g. <30 mm), the computation time will increase exponentially due to the surge in the number of grids.

[0073] If the discrete length is too large (e.g. >40 mm), the effects of local structures such as filter element pleats and cavity corners on airflow distribution may be ignored, resulting in deviations in pressure loss calculations.

[0074] For example, in a simulation of a certain air filter model, the number of cells at a discrete length of 30 mm was reduced by 40% compared to 20 mm, but the velocity field distribution error in the filter element area was less than 5%, achieving the optimal solution for "efficiency-accuracy".

[0075] The 30-40mm setting aligns with the industry's common discrete standard for housing components, facilitating reuse of simulation models for different filter models while lowering the barrier for engineers to debug parameters. For example, when comparing multiple filter designs, this parameter can be used to quickly compare the transmission loss of filters with different structures, shortening the R&D cycle.

[0076] The discrete lengths of the intake duct (0.2×cylinder diameter) and the air filter (30-40 mm) are set. By adopting the strategy of "densifying critical areas and sparsely distributing non-critical areas," the overall grid length tends to be uniform, thus avoiding computational divergence caused by sudden changes in grid size.

[0077] Step S5, performing acoustic calculation analysis on the one-dimensional discrete data, connecting the model import and export, configuring calculation parameters and executing acoustic calculation to generate acoustic calculation results;

[0078] Specifically, the software contains a transmission loss calculation module that can be called directly. Connect the module's pipe mouth to the inlet and outlet of the model, set parameters such as the sound source category, solution frequency band, and module pipe mouth diameter, and then submit the calculation.

[0079] The acoustic calculation module typically processes and calculates data based on a one-dimensional model. However, the original three-dimensional structural model of the intake system is too complex to be directly processed by the acoustic calculation module. By discretizing the converted model into a one-dimensional staggered grid, the complex three-dimensional structure can be simplified to a form that meets the requirements of the acoustic calculation module, allowing the calculation module to calculate the acoustic characteristics of the intake system. This is a necessary transition step from model construction to acoustic calculation, ensuring a smooth calculation process.

[0080] During the discretization process, the discretization length can be set based on the computational objective and component type. For example, for intake system transmission loss calculations, setting a specific discretization length ensures the required accuracy while also avoiding excessive computational complexity and time delays due to overly dense meshes. Making the mesh length uniform strikes a balance between simulation accuracy and speed, improving the efficiency of the entire computational process and reducing computational resource consumption and time costs while meeting accuracy requirements.

[0081] By properly setting the discretization parameters, the discretized one-dimensional staggered grid can more accurately simulate the acoustic characteristics of the intake system, such as sound wave propagation, reflection, and attenuation. Different discretization length settings correspond to different calculation accuracy. Appropriate discretization parameters can enable the model to better reflect the actual acoustic behavior of the intake system, providing an effective data foundation for transmission loss calculations, helping to accurately analyze the intake system's noise reduction performance and determine whether it meets design requirements.

[0082] Step S6, obtaining preset performance indicator parameters;

[0083] Specifically, the preset performance index parameters can intuitively reflect the deviation between the obtained acoustic calculation results and the preset standards, and the error can be reduced by adjusting the input parameters.

[0084] Step S7, comparing the acoustic calculation results with the preset performance index parameters;

[0085] Determining whether the acoustic calculation results meet the preset performance index parameters;

[0086] If not, adjust the input parameters of the intake system according to the comparison results.

[0087] Specifically, a higher transmission loss value indicates a stronger noise reduction performance. For heavy-duty commercial vehicles, a transmission loss value of 20 dB or higher is generally considered to indicate good noise reduction performance. Troughs in the transmission loss curve should be avoided as much as possible.

[0088] Further, including:

[0089] The input model parameters of the intake system include: air filter, air flow meter, intake pressure sensor, throttle body, additional air valve, idle speed control valve, resonant cavity, power cavity and structural data of intake manifold.

[0090] Further, including:

[0091] Adjusting the physical model of the intake system according to the comparison result includes: modifying the model structure, reselecting a conversion method, or adjusting discrete parameters.

[0092] Further, including:

[0093] Converting the physical model of the intake system includes: modifying the imported model;

[0094] The correction includes: merging separated parts, deleting redundant parts and extracting end faces.

[0095] Further, including:

[0096] The input model parameters of the intake system are connected in sequence.

[0097] Further, including:

[0098] Targeted conversions include: dividing and converting cavity-type components in specific directions, replacing special component materials with equivalent resistive materials, and using diverters to convert pipelines with complex structures.

[0099] Specifically, by converting the models of various intake components and modeling the filter element material, the accuracy of transmission loss calculations is improved. By analyzing and calculating the transmission loss of the intake system through simulation, the noise reduction performance of the intake system can be determined in advance, significantly saving manpower and material resources to avoid intake noise issues and shortening product development time.

[0100] Figure 2 This is a structural diagram of a vehicle-mounted air intake system simulation and analysis device provided by one or more embodiments of the present invention.

[0101] like Figure 2 As shown, the device includes:

[0102] A model building unit, used to obtain an input parameter model of the intake system and build a physical model of the intake system;

[0103] a model verification unit, configured to obtain a model preset rule and check the physical model of the intake system according to the model preset rule;

[0104] A model conversion unit, used to perform targeted conversion on the input parameter model of the intake system to generate a unified and adaptive conversion model;

[0105] A model discretization unit is used to perform one-dimensional discretization processing on the uniformly adapted conversion model, set discrete parameters, and generate one-dimensional discrete data;

[0106] The acoustic calculation unit is used to perform acoustic calculation analysis on one-dimensional discrete data, connect the model import and export, configure calculation parameters, perform acoustic calculations, and generate acoustic calculation results;

[0107] A model comparison unit is configured to obtain preset performance index parameters; determine whether the acoustic calculation results meet the preset performance index parameters based on the comparison results between the acoustic calculation results and the preset performance index parameters; if not, feed the comparison results back to the physical model of the intake system; and adjust the input parameters of the intake system based on the comparison results.

[0108] Specifically, the constructed physical model should fully reflect the key components of the intake system (such as filters, pipes, valves, etc.) and their connection relationships.

[0109] Preset rules may include geometric constraints (such as pipe diameter range, length ratio), material property rationality, component integrity, etc.

[0110] The verification mechanism can adopt a combination of automated algorithms or human intervention.

[0111] Through feedback adjustment of the model comparison unit, a complete closed loop from design to verification is achieved, improving design efficiency and quality.

[0112] The model conversion unit solves the compatibility problem of models from different sources and enhances the versatility of the device.

[0113] The parameter settings of the model's discrete elements can be flexibly adjusted according to different computational objectives (such as performance or noise), improving analysis flexibility.

[0114] Integrate geometric modeling, acoustic calculation, and performance evaluation into a one-stop analysis platform.

[0115] Reduce prototyping costs and time by replacing some physical experiments with virtual simulation.

[0116] The closed-loop feedback mechanism can automatically explore the optimal parameter combination to improve the noise reduction performance of the intake system.

[0117] By adjusting calculation parameters and performance indicators, it can be applied to different types of vehicles and application scenarios.

[0118] It is worth noting that although the present device only discloses a model building unit, a model verification unit, a model conversion unit, a model discrete unit acoustic calculation unit and a model comparison unit, it does not mean that the present device is limited to the above-mentioned basic functional modules. Rather, what the present invention wants to express is that, based on the above-mentioned basic functional modules, those skilled in the art can arbitrarily add one or more functional modules in combination with the existing technology to form an infinite number of embodiments or technical solutions. In other words, the present system is open rather than closed. Just because this embodiment only discloses individual basic functional modules, it cannot be considered that the scope of protection of the claims of the present invention is limited to the above-mentioned basic functional modules.

[0119] Figure 3 It is a flow chart of a one-dimensional simulation analysis method of an intake system transmission loss according to a specific embodiment of the present invention.

[0120] The specific implementation process is as follows:

[0121] First, a 3D model of the intake system is required to prepare for simulation analysis. Data collected includes the various intake pipes, air filters and filter elements, mufflers, and other structures. This data needs to be checked for accuracy. Furthermore, the model needs to be simplified, removing unnecessary structures.

[0122] The intake system has a complex structure. To obtain its 3D model, comprehensive data collection is required for each component, including the intake pipe, air filter and filter element, and muffler. This data is fundamental to building an accurate 3D model. For example, the shape, size, and bend angle of the intake pipe, the overall structure of the air filter, and the material properties of the filter element are all directly related to whether the model can truly reflect the physical characteristics of the actual intake system.

[0123] After collecting data, its accuracy must be rigorously checked. Data errors can lead to deviations in subsequent calculations, compromising the reliability of the results. Furthermore, to improve computational efficiency, the model should be simplified by removing unnecessary structures that do not affect the primary acoustic performance. For example, decorative components or small protrusions that have minimal impact on airflow and sound wave propagation can be removed without altering the overall acoustic properties of the structure.

[0124] Secondly, the three-dimensional model of the intake system is converted: the imported model is modified, such as merging separated parts, deleting redundant parts, splitting and deleting redundant structures on useful pipes, extracting end faces if there are end faces, etc. The conversion method of different intake pipes can be carried out according to the above principles.

[0125] After importing a 3D model, issues such as model separation and redundant parts may arise due to issues with the modeling process or data transfer, necessitating model correction. Merging separated parts ensures model integrity, while deleting redundant parts avoids unnecessary calculations. Separating and deleting redundant structures on useful fittings preserves the fitting's primary functionality while simplifying the model. Furthermore, extracting end faces facilitates subsequent model connections and calculation setup.

[0126] Different intake duct structures vary significantly, requiring specific conversion principles. For air filters, converting them into cavities and slicing them along the filter element helps more accurately simulate internal airflow and sound wave propagation. Using wool, a resistive material, as an equivalent filter element simplifies the modeling of real filters based on their acoustic properties. Simple intake ducts are converted to straight and curved pipes, while complex ducts are converted using splitters. These methods aim to reduce model complexity while ensuring computational accuracy, making them more suitable for subsequent analysis.

[0127] Next, connect all the converted models: After all the pipe parts have been converted, connect the components in the order they are connected. If gaps appear between adjacent converted models and the length and position of the models need to be adjusted to complete the connection, try to adjust the pipe length rather than the spatial position of the pipe.

[0128] After all pipe sections have been converted, they must be connected sequentially according to the actual connection sequence. During the connection process, if gaps appear between adjacent converted models, adjustments must be made. When doing so, it's best to adjust the pipe length rather than its spatial position. This is because arbitrarily adjusting the spatial position of the pipes can alter the overall layout and acoustic properties of the intake system, causing the calculated results to deviate from reality. By properly adjusting the pipe lengths to complete the connection, you can ensure the correct physical connection relationships of the model while maintaining the stability of its acoustic properties.

[0129] Finally, call the transmission loss calculation template, submit the calculation, and analyze the results. After calling the template, save it as a separate file. Connect the module's nozzle to the inlet and outlet defined in the model, with the module's inlet as the sound source and the outlet as the fully attenuated environment. Set the source type, solution frequency band, and bandwidth (given that intake noise is primarily concentrated in the low- to mid-frequency range, the analysis frequency range can be set up to 1000 Hz), as well as the module nozzle diameter (the same as the model's nozzle diameter). Then submit the calculation. Generally, a transmission loss value of 20 dB or greater indicates good noise reduction performance.

[0130] After calling the transmission loss calculation template, a save operation is required to prevent overwriting the original file or to facilitate subsequent tracing. Connect the module's nozzle to the inlet and outlet defined by the model, set the module inlet as the sound source, and the outlet as a full-dissipation environment. This is a key setting for simulating the acoustic environment of the actual intake system. At the same time, based on the characteristics of intake noise mainly concentrated in the low and medium frequency ranges, the analysis frequency range is set to a maximum of 1000Hz. The sound source category, solution frequency band, and bandwidth are reasonably set, and the module nozzle diameter is ensured to be the same as the model nozzle diameter. These parameter settings directly affect the accuracy and effectiveness of the calculation results.

[0131] After submitting the calculation, the noise reduction performance of the intake system is determined based on the calculated transmission loss value. Generally, a transmission loss value of 20dB or higher indicates good noise reduction performance. Analyzing the transmission loss results can assess the rationality of the intake system design and provide a basis for optimizing the intake system structure and improving noise reduction performance.

[0132] The present invention describes the key factors that affect transmission loss accuracy:

[0133] 1. Existing one-dimensional simulations of intake systems ignore the impact of the air filter element on the simulation results, simplifying it directly into a cavity and straight tube, resulting in low calculation accuracy. To address this issue, this paper proposes an equivalent modeling of the filter element using wool-like resistive materials, achieving a more accurate air filter model.

[0134] 2. In view of the complex pipes and fittings of commercial vehicle intake systems and the difficulty in model conversion, this invention proposes six conversion principles to ensure the accuracy of the converted model as much as possible.

[0135] Figure 4 This is a comparison chart of one-dimensional simulation results and test results of the transmission loss of a heavy-duty commercial vehicle air filter provided by a specific embodiment of the present invention.

[0136] like Figure 4 As shown, the simulation accuracy of the present invention is explained by taking a heavy commercial vehicle air filter as an example. Figure 4 The following figure compares the one-dimensional simulation and experimental results of the transmission loss of an air filter for a heavy-duty commercial vehicle. The peak frequency of the experimental result is 348 Hz, corresponding to a transmission loss amplitude of 48.7 dB. The peak frequency of the one-dimensional simulation is 350 Hz, corresponding to a transmission loss amplitude of 41.5 dB. The deviation of the simulated peak frequency is 0.57%, and the deviation of the transmission loss amplitude corresponding to the peak frequency is 14.8%. Aside from the peak frequency, the remaining frequencies and corresponding amplitudes also show a high degree of agreement.

[0137] Figure 5This is a structural block diagram of an electronic device for a vehicle-mounted air intake system simulation analysis method provided by one or more embodiments of the present invention.

[0138] like Figure 5 As shown, the present application provides an electronic device, comprising: a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other via the communication bus;

[0139] A computer program is stored in the memory. When the computer program is executed by the processor, the processor executes the steps of a vehicle-mounted air intake system simulation analysis method.

[0140] The present application also provides a computer-readable storage medium storing a computer program executable by an electronic device. When the computer program runs on the electronic device, the electronic device executes the steps of a vehicle intake system simulation analysis method.

[0141] The present application also provides a test platform, including: electronic equipment, used in the steps of a vehicle-mounted air intake system simulation analysis method;

[0142] a processor, the processor running a program, and executing steps of a vehicle air intake system simulation analysis method based on data output by the electronic device when the program is running;

[0143] The storage medium is used to store a program, and when the program is running, it executes the steps of a vehicle intake system simulation analysis method for data output from an electronic device.

[0144] For simplicity of description, the method embodiments are described as a series of actions. However, those skilled in the art should be aware that the embodiments of the present invention are not limited by the order of the actions described, because certain steps can be performed in other orders or simultaneously according to the embodiments of the present invention. Secondly, those skilled in the art should also be aware that the embodiments described in this specification are all preferred embodiments, and the actions involved are not necessarily required by the embodiments of the present invention.

[0145] Through the description of the above embodiments, it can be seen that those skilled in the art can clearly understand that the present application can be implemented by means of software plus the necessary general hardware platform. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a storage medium such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in various embodiments of the present application or certain parts of the embodiments.

[0146] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vehicle-mounted air intake system simulation analysis method, characterized in that: include: Obtain the input parameter model of the intake system and build a physical model of the intake system; Obtaining a model preset rule, and checking a physical model of the intake system according to the model preset rule; Perform targeted conversion on the input parameter model of the intake system to generate a unified and adaptive conversion model; Performing one-dimensional discrete processing on the uniformly adapted conversion model, setting discrete parameters, and generating one-dimensional discrete data; Perform acoustic calculation and analysis on one-dimensional discrete data, connect the model import and export, configure calculation parameters and perform acoustic calculations to generate acoustic calculation results; Get preset performance indicator parameters; According to the comparison result of the acoustic calculation result and the preset performance index parameter, it is determined whether the acoustic calculation result meets the preset performance index parameter; If not, the input parameters of the intake system are adjusted according to the comparison result.

2. The vehicle-mounted air intake system simulation analysis method according to claim 1, characterized in that: The input model parameters of the intake system include: air filter, air flow meter, intake pressure sensor, throttle body, additional air valve, idle speed control valve, resonant cavity, power cavity and structural data of intake manifold.

3. The vehicle air intake system simulation analysis method according to claim 1, characterized in that: Adjusting the physical model of the intake system according to the comparison result includes: modifying the model structure, reselecting a conversion method, or adjusting discrete parameters.

4. The vehicle air intake system simulation analysis method according to claim 1, characterized in that: Converting the physical model of the intake system includes: modifying the imported model; The correction includes: merging separated parts, deleting redundant parts and extracting end faces.

5. The vehicle-mounted air intake system simulation analysis method according to claim 2, characterized in that: The input model parameters of the intake system are connected in sequence.

6. The vehicle-mounted air intake system simulation analysis method according to claim 1, characterized in that: Targeted conversions include: dividing and converting cavity-type components in specific directions, replacing special component materials with equivalent resistive materials, and using diverters to convert pipelines with complex structures.

7. A vehicle-mounted air intake system simulation and analysis device, characterized in that: include: A model building unit, used to obtain an input parameter model of the intake system and build a physical model of the intake system; a model verification unit, configured to obtain a model preset rule and check the physical model of the intake system according to the model preset rule; A model conversion unit, used to perform targeted conversion on the input parameter model of the intake system to generate a unified and adaptive conversion model; A model discretization unit is used to perform one-dimensional discretization processing on the uniformly adapted conversion model, set discrete parameters, and generate one-dimensional discrete data; The acoustic calculation unit is used to perform acoustic calculation analysis on one-dimensional discrete data, connect the model import and export, configure calculation parameters, perform acoustic calculations, and generate acoustic calculation results; A model comparison unit, used to obtain preset performance indicator parameters; According to the comparison result of the acoustic calculation result and the preset performance index parameter, it is determined whether the acoustic calculation result meets the preset performance index parameter; If not, the input parameters of the intake system are adjusted according to the comparison result.

8. An electronic device, characterized in that: include: A processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other via the communication bus; The memory stores a computer program, and when the computer program is executed by the processor, the processor executes the steps of the vehicle intake system simulation analysis method according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that It stores a computer program that can be executed by an electronic device. When the computer program runs on the electronic device, the electronic device executes the steps of the vehicle intake system simulation analysis method according to any one of claims 1 to 6.

10. A detection platform, characterized in that: include: An electronic device for implementing the steps of a vehicle air intake system simulation analysis method according to any one of claims 1 to 6; a processor, wherein the processor runs a program, and when the program runs, the data output by the electronic device executes the steps of the vehicle intake system simulation analysis method according to any one of claims 1 to 6; A storage medium for storing a program, wherein when the program is running, the program executes the steps of a vehicle air intake system simulation analysis method according to any one of claims 1 to 6 for data output from an electronic device.

Images