A method, device and equipment for testing and verifying an engine air passage
By using casting simulation and selective laser sintering printing technology to rapidly manufacture and test engine air passages, the problem of difficulty in iterative verification caused by casting deviations has been solved, enabling rapid iteration and efficient verification of air passage development.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WEICHAI POWER CO LTD
- Filing Date
- 2023-02-16
- Publication Date
- 2026-04-21
AI Technical Summary
In the existing technology, the casting process of engine air passages is subject to casting deviations, which lead to differences between the design model and the actual product structure. This makes it impossible to quickly iterate and verify the design, resulting in a long manufacturing cycle and failing to meet development requirements such as eddy ratio and flow coefficient.
By obtaining a casting model of the engine cylinder head, casting simulation software is used to predict deformation. Selective laser sintering printing technology is then used to print a solid model of the engine intake manifold. The solid parameters are compared with the design parameters, and the casting process is adjusted to achieve rapid iterative verification.
It enables rapid testing of airway performance indicators, shortens the manufacturing cycle, improves the accuracy and efficiency of airway development, and ensures dimensional consistency.
Smart Images
Figure CN115979658B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of casting technology, specifically to a testing and verification method, apparatus, and equipment for engine air passages. Background Technology
[0002] The engine's intake ports, located inside the cylinder head, have a complex structure. During the casting process of engine intake ports, due to casting deviations, discrepancies often exist between the design test model and the actual product structure. This can lead to products that meet design requirements in testing ultimately failing to meet design specifications. To meet development requirements such as eddy ratio and flow coefficient, the intake ports, while possessing a specific product structure, must also exhibit high precision and consistency. Existing technology involves comparing the physical intake port with a CAD model using scanning technology. However, this process requires waiting for the cylinder head to be manufactured, necessitating continuous mold modifications and a long manufacturing cycle. This results in problems such as large casting deviations and the inability to quickly iterate and verify during engine intake port development.
[0003] Therefore, how to achieve rapid iterative verification of the consistency between the engine cylinder head CAD model and the development model during the engine cylinder head mold manufacturing process, so as to shorten the engine cylinder head mold manufacturing cycle, is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention
[0004] In view of this, embodiments of this application provide a testing and verification method, apparatus, and equipment for engine air passages, enabling rapid iterative verification of the consistency between the engine cylinder head CAD model and the development model, thereby shortening the manufacturing cycle of the engine cylinder head mold.
[0005] To address the above problems, the technical solutions provided in this application are as follows:
[0006] A method for testing and verifying engine air intakes, the method comprising:
[0007] Obtain the casting model of the engine cylinder head;
[0008] The casting model is input into the casting simulation software to obtain the deformation of the casting model;
[0009] Based on the deformation, a modified engine cylinder head model is obtained;
[0010] Selective laser sintering printing technology was used to print the engine intake port portion of the modified engine cylinder head model to obtain a solid model of the engine intake port.
[0011] Obtain the physical parameters of the engine air passage entity and compare the physical parameters with the design parameters;
[0012] In response to the comparison result indicating that the entity parameters are inconsistent with the design parameters, the casting process of the casting model is adjusted according to the comparison result, thereby adjusting the casting model, or the engine cylinder head correction model is adjusted according to the comparison result.
[0013] In one possible implementation, the method further includes:
[0014] In response to adjusting the casting process based on the comparison results, thereby adjusting the casting model, the steps of obtaining the casting model of the engine cylinder head and subsequent steps are performed until the solid parameters are consistent with the design parameters.
[0015] In one possible implementation, the method further includes:
[0016] In response to adjusting the engine cylinder head correction model based on the comparison results, the adjusted engine cylinder head correction model is used as the engine cylinder head correction model, and the steps of obtaining the model parameters of the engine cylinder head correction model and subsequent steps are executed until the entity parameters are consistent with the design parameters.
[0017] In one possible implementation, inputting the casting model into casting simulation software to obtain the deformation of the casting model includes:
[0018] The casting model is input into the casting simulation software to obtain the casting model parameters;
[0019] The deformation of the casting model is obtained based on the casting model parameters.
[0020] In one possible implementation, the casting simulation software includes either finite element simulation software or finite difference simulation software.
[0021] In one possible implementation, the material used to print the engine air passage body using selective laser sintering printing technology is a polymer powder material.
[0022] In one possible implementation, the casting model of the engine cylinder head is obtained by sand core design and casting process design according to the actual casting process of the cylinder head.
[0023] A testing and verification device for engine air intake, the device comprising:
[0024] The first acquisition unit is used to acquire the casting model of the engine cylinder head;
[0025] The second acquisition unit is used to input the casting model into the casting simulation software to obtain the deformation of the casting model.
[0026] The third acquisition unit is used to acquire the engine cylinder head correction model based on the deformation.
[0027] The fourth acquisition unit is used to print the engine intake port portion in the engine cylinder head correction model using selective laser sintering printing technology to obtain a solid model of the engine intake port.
[0028] The fifth acquisition unit is used to acquire the physical parameters of the engine air passage entity;
[0029] The comparison unit is used to compare the entity parameters with the design parameters;
[0030] An adjustment unit, responding to the comparison result of the comparison unit indicating that the entity parameters are inconsistent with the design parameters, is used to adjust the casting process of the casting model according to the comparison result, thereby adjusting the casting model, or to adjust the engine cylinder head correction model according to the comparison result.
[0031] A test and verification device for an engine air passage, the device comprising a memory and a processor, the memory for storing programs or code, and the processor for running the programs or code stored in the memory to implement the test and verification method for the engine air passage as described in any of the preceding claims.
[0032] A computer-readable storage medium storing code, wherein when the code is executed, a device executing the code implements the test and verification method for engine air passages as described in any of the preceding claims.
[0033] Compared with the prior art, this application has the following beneficial effects:
[0034] This application provides a method, apparatus, and equipment for testing and verifying engine air passages. Specifically, when implementing the engine air passage testing and verification method provided in this application, a casting model of the engine cylinder head is first obtained and input into casting simulation software to obtain the deformation of the casting model. Then, a modified engine cylinder head model is obtained based on the deformation, and the engine air passage portion of the modified engine cylinder head model is printed using selective laser sintering printing technology to obtain a solid model of the engine air passage. The solid parameters of the solid engine air passage are then obtained and compared with the design parameters. If the comparison result shows that the solid parameters are inconsistent with the design parameters, the casting process of the casting model is adjusted according to the comparison result, thereby adjusting the casting model, or the modified engine cylinder head model is adjusted according to the comparison result. This application predicts the deformation of the cylinder head casting process based on casting simulation software and uses printing technology for rapid manufacturing and testing. While ensuring dimensional consistency, it can quickly test the performance indicators of the air passage, improving the accuracy and efficiency of air passage development. Attached Figure Description
[0035] To more clearly illustrate the technical solutions in this embodiment or the prior art, the drawings used in the description of the embodiment or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0036] Figure 1 A flowchart illustrating a method for testing and verifying an engine air passage provided in an embodiment of this application;
[0037] Figure 2 This is a schematic diagram of the structure of a test and verification device for an engine air passage provided in an embodiment of this application. Detailed Implementation
[0038] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.
[0039] To facilitate understanding of the technical solutions provided in the embodiments of this application, the background technology involved in the embodiments of this application will be described below.
[0040] The engine's intake manifold, located inside the cylinder head, has a complex structure and is a critical component, providing a passage for air to enter and exit the cylinders. During the engine intake manifold manufacturing process, due to casting deviations, discrepancies often exist between the design test model and the actual product structure. This can lead to products that meet design requirements in testing failing to ultimately achieve design specifications. To meet development requirements such as eddy ratio and flow coefficient, the intake manifold, while possessing a specific product structure, must also exhibit high precision and consistency. Existing technologies utilize Computational Fluid Dynamics (CFD) simulation software, Six Sigma tools, Blu-ray 3D scanning, and FEV intake manifold performance testing benches to identify sources of manufacturing process variation, optimize processes, and reduce manufacturing process variation, thereby effectively ensuring the consistency of engine intake manifold performance. Using a photogrammetric 3D scanner to scan the object and comparing the resulting 3D point cloud model with the original CAD model allows for analysis of the differences between the final product and the original design. This provides a simple, fast, and accurate way to detect shape and position errors in complex shapes, improving product quality. The intake manifold sand core is printed using 3DP (3D powder bonding technology). The advantage of this technology is that it is suitable for manufacturing sand cores with certain complex structures. However, since the process requires waiting for the cylinder head product to be manufactured, the molds need to be constantly modified, resulting in a long manufacturing cycle. This leads to problems such as large casting deviations and the inability to quickly iterate and verify during the development of engine air passages.
[0041] To address this issue, this application provides a method, apparatus, and equipment for testing and verifying engine intake manifolds. First, a casting model of the engine cylinder head is obtained and input into casting simulation software to determine its deformation. Then, a modified engine cylinder head model is obtained based on the deformation, and the engine intake manifold portion of the modified model is printed using selective laser sintering (SLS) technology to obtain a solid model of the engine intake manifold. Next, the solid parameters of the solid engine intake manifold are obtained and compared with design parameters. If the comparison result shows that the solid parameters are inconsistent with the design parameters, the casting process of the casting model is adjusted based on the comparison result, thereby adjusting the casting model, or the modified engine cylinder head model is adjusted based on the comparison result. This application predicts the deformation during the casting process of the cylinder head casting based on casting simulation software and uses printing technology for rapid manufacturing and testing. While ensuring dimensional consistency, it can quickly test the performance indicators of the intake manifold, improving the accuracy and efficiency of intake manifold development.
[0042] See Figure 1 The figure is a flowchart of a test and verification method for an engine air passage provided in an embodiment of this application, as shown below. Figure 1As shown, the test and verification method for this engine air intake can include steps S101-S106:
[0043] S101: Obtain the casting model of the engine cylinder head.
[0044] To implement the testing and verification method for engine intake ports, the engine intake port testing and verification system must first obtain a casting model of the engine cylinder head.
[0045] In one possible implementation, the casting model of the engine cylinder head refers to a CAD model that matches the actual engine cylinder head, constructed to achieve solid casting of the engine cylinder head. Casting is a method of pouring molten metal into a casting cavity adapted to the shape of the part, allowing it to cool and solidify to obtain the part or blank. The air passages are formed on the casting using sand cores; the internal cavity of a cylinder head consists of multiple different sand cores. In actual casting, the relevant process structure of the sand cores needs to be designed first, followed by core making and assembly, which may result in some deviations. During the actual pouring of molten metal, the molten metal exerts significant buoyancy on the sand cores, affecting their position. As the metal solidifies, the molten metal contracts, generating internal stress, which also creates compressive force on the sand cores, and tension or compression occurs at different locations within the metal itself. These factors can lead to differences between the resulting casting and the design model.
[0046] In one possible implementation, the casting model of the engine cylinder head is obtained by sand core design and casting process design according to the actual casting process of the cylinder head.
[0047] The resulting casting model of the engine cylinder head can recreate the actual casting process of the engine cylinder head, thus taking into account the influencing factors in the actual casting process, and thereby enabling the prediction of the actual deformation of the engine cylinder head during subsequent simulation.
[0048] S102: Input the casting model into the casting simulation software to obtain the deformation of the casting model.
[0049] To predict the deformation of the casting model during the casting process, after obtaining the casting model of the engine cylinder head, it is necessary to input the casting model of the engine cylinder head into the casting simulation software. At this time, the casting simulation software can simulate the actual casting process of the engine cylinder head to obtain the deformation of the casting model.
[0050] In one possible implementation, the casting model is input into casting simulation software to obtain the deformation of the casting model, including A1-A2:
[0051] A1: Input the casting model into the casting simulation software to obtain the casting model parameters.
[0052] To obtain the deformation of the engine cylinder head casting model, the casting model of the engine cylinder head must first be input into the casting simulation software.
[0053] In one possible implementation, the casting model parameters can be, but are not limited to, parameters reflecting whether there are problems with the cylinder head casting process, such as filling, solidification, and stress. Filling refers to the process of pouring molten metal into the mold during casting to fill it completely. Solidification refers to the process of the molten metal in the cylinder head changing from a liquid to a solid state. Stress refers to the internal forces generated between different parts of the cylinder head when it deforms due to external factors (force, humidity, temperature changes, etc.) to resist these external factors and attempt to restore the object from its deformed position to its original position.
[0054] In one possible implementation, the casting simulation software includes finite element simulation software or finite difference simulation software, such as professional casting simulation software like MAGMA, ProCAST, AnyCasting, and Flow-3D.
[0055] A2: Obtain the deformation of the casting model based on the casting model parameters.
[0056] When the casting model parameters differ from the target parameters, it indicates that the casting model is deformed. Therefore, after inputting the casting model into the casting simulation software to obtain the casting model parameters, the deformation of the casting model can be determined based on these parameters. For example, if the target cylinder head stress is A, but the casting simulation software obtains a cylinder head stress of B from the casting model, the difference between the casting model parameters and the target parameters allows us to determine the specific deformation of the casting model due to the different stresses.
[0057] S103: Obtain the engine cylinder head correction model based on the deformation.
[0058] Because the casting model of the engine cylinder head is subject to deformation, a solid model of the engine intake manifold cannot be directly printed from this casting model. A solid model of the engine intake manifold printed directly from this casting model cannot be used as a standard model. Therefore, after obtaining the deformation details of the casting model, the casting model of the engine cylinder head needs to be adjusted according to the deformation details to obtain a corrected model of the engine cylinder head.
[0059] S104: Use selective laser sintering printing technology to print the engine intake port portion of the engine cylinder head correction model to obtain a solid model of the engine intake port.
[0060] After obtaining the modified engine cylinder head model, selective laser sintering (SLS) technology can be used to print the engine intake manifold portion within the modified cylinder head model, thus creating a solid model of the engine intake manifold. Selective Laser Sintering (SLS) is a powerful 3D printing technology belonging to the powder bed fusion process family. It can produce high-precision and durable parts suitable for end-use, small-batch production, or prototype manufacturing. SLS enables the rapid fabrication of the intake manifold. A laser beam scans across the powder material layer, raising the powder temperature to its melting point, sintering it, and bonding it to the underlying formed parts, accumulating layer by layer to form a solid. Selectable powders include PA12, PA12-GF, PA6-GF, and PA12-AL. These powders have low density and tensile strengths between 40-77 MPa. Their advantages include the absence of support during printing, resulting in parts without layered textures. Optimal surface roughness can reach the 10µm level. SLS 3D printing can be used for both prototyping functional polymer components and small-scale production runs because it offers high design freedom, high precision, and produces parts with good and consistent mechanical properties. 3D printing, also known as additive manufacturing, is a rapid prototyping technology. It's a technique that uses digital model files as a basis and employs bondable materials such as powdered metals or plastics to construct objects layer by layer.
[0061] In one possible implementation, the material used to print the engine air passage body using selective laser sintering printing technology is a polymer powder material.
[0062] S105: Obtain the physical parameters of the engine air passage entity and compare the physical parameters with the design parameters.
[0063] To verify whether the obtained engine air passage entity meets the design standards, after obtaining the engine air passage entity model, the entity parameters of the engine air passage entity can also be obtained and compared with the design parameters.
[0064] In one possible implementation, the physical parameters refer to parameters such as the swirl ratio and flow coefficient of the actual engine intake manifold. The swirl ratio is one of the parameters used to measure the airflow within the engine cylinder. The magnitude of the swirl ratio often directly affects the engine's thermal efficiency and other performance characteristics. The flow coefficient is an indicator used to characterize the ability of gas to pass through the intake manifold.
[0065] In one possible implementation, the design parameters refer to parameters such as the vortex ratio and flow coefficient of the ideal engine air passage entity.
[0066] S106: In response to the comparison result that the entity parameters are inconsistent with the design parameters, the casting process of the casting model is adjusted according to the comparison result, thereby adjusting the casting model, or the engine cylinder head correction model is adjusted according to the comparison result.
[0067] When the comparison result shows that the entity parameters are inconsistent with the design parameters, it indicates that the obtained engine intake manifold entity does not meet the design standards. This may be due to problems in the casting process during the casting of the engine cylinder head casting model, or it may be due to problems in the engine intake manifold entity model itself. Therefore, at this time, the casting process of the casting model can be adjusted according to the comparison result, thereby adjusting the casting model, or the engine cylinder head correction model can be adjusted according to the comparison result.
[0068] In one possible implementation, the method further includes:
[0069] In response to adjusting the casting process based on the comparison results, thereby adjusting the casting model, the steps of obtaining the casting model of the engine cylinder head and subsequent steps are performed until the solid parameters are consistent with the design parameters.
[0070] When the comparison results indicate that there is a problem with the casting model, the casting process needs to be adjusted to adjust the casting model. Then, the casting model of the engine cylinder head with the casting process adjusted is obtained, and subsequent steps are performed until the entity parameters are consistent with the design parameters.
[0071] In one possible implementation, the method further includes:
[0072] In response to adjusting the engine cylinder head correction model based on the comparison results, the adjusted engine cylinder head correction model is used as the engine cylinder head correction model, and the steps of obtaining the model parameters of the engine cylinder head correction model and subsequent steps are executed until the entity parameters are consistent with the design parameters.
[0073] When the comparison results indicate that there is a problem with the engine cylinder head correction model, it is necessary to adjust the engine cylinder head correction model, and use the adjusted engine cylinder head correction model as the engine cylinder head correction model, and perform subsequent steps until the entity parameters are consistent with the design parameters.
[0074] Based on the content of S101-S106, firstly, a casting model of the engine cylinder head is obtained. Then, the casting model is input into casting simulation software to obtain the deformation of the casting model, and a modified engine cylinder head model is obtained based on the deformation. Next, selective laser sintering (SLS) printing technology is used to print the engine intake port portion of the modified engine cylinder head model to obtain a solid model of the engine intake port, and the solid parameters of the solid model are obtained and compared with the design parameters. Finally, when the comparison result shows that the solid parameters are inconsistent with the design parameters, the casting process of the casting model is adjusted according to the comparison result, thereby adjusting the casting model, or the modified engine cylinder head model is adjusted according to the comparison result. This application predicts the deformation of the cylinder head casting process based on casting simulation software and uses printing technology for rapid manufacturing and testing. While ensuring dimensional consistency, it can quickly test the performance indicators of the intake port, improving the accuracy and efficiency of intake port development.
[0075] The above are some specific implementations of the engine air passage testing and verification method provided in this application. Based on this, this application also provides a corresponding testing and verification device for engine air passages. The device provided in this application will be described below from the perspective of functional modularity.
[0076] See Figure 2 This figure is a schematic diagram of the structure of a test and verification device for an engine air passage provided in an embodiment of this application. Figure 2 As shown, the test and verification device for the engine air intake includes:
[0077] The first acquisition unit 201 is used to acquire the casting model of the engine cylinder head.
[0078] In one possible implementation, the casting model of the engine cylinder head refers to a CAD model that matches the actual engine cylinder head, constructed to achieve solid casting of the engine cylinder head. Casting is a method of pouring molten metal into a casting cavity adapted to the shape of the part, allowing it to cool and solidify to obtain the part or blank. The air passages are formed on the casting using sand cores; the internal cavity of a cylinder head consists of multiple different sand cores. In actual casting, the relevant process structure of the sand cores needs to be designed first, followed by core making and assembly, which may result in some deviations. During the actual pouring of molten metal, the molten metal exerts significant buoyancy on the sand cores, affecting their position. As the metal solidifies, the molten metal contracts, generating internal stress, which also creates compressive force on the sand cores, and tension or compression occurs at different locations within the metal itself. These factors can lead to differences between the resulting casting and the design model.
[0079] In one possible implementation, the casting model of the engine cylinder head is obtained by sand core design and casting process design according to the actual casting process of the cylinder head.
[0080] The second acquisition unit 202 is used to input the casting model into the casting simulation software to obtain the deformation of the casting model.
[0081] The third acquisition unit 203 is used to acquire the engine cylinder head correction model according to the deformation.
[0082] The fourth acquisition unit 204 is used to print the engine air passage portion in the engine cylinder head correction model using selective laser sintering printing technology to obtain a solid model of the engine air passage.
[0083] In one possible implementation, the material used to print the engine air passage body using selective laser sintering printing technology is a polymer powder material.
[0084] The fifth acquisition unit 205 is used to acquire the physical parameters of the engine air passage entity.
[0085] The comparison unit 206 is used to compare the entity parameters with the design parameters.
[0086] In one possible implementation, the physical parameters refer to parameters such as the swirl ratio and flow coefficient of the actual engine intake manifold. The swirl ratio is one of the parameters used to measure the airflow within the engine cylinder. The magnitude of the swirl ratio often directly affects the engine's thermal efficiency and other performance characteristics. The flow coefficient is an indicator used to characterize the ability of gas to pass through the intake manifold.
[0087] In one possible implementation, the design parameters refer to parameters such as the vortex ratio and flow coefficient of the ideal engine air passage entity.
[0088] The adjustment unit 207, in response to the comparison result of the comparison unit indicating that the entity parameters are inconsistent with the design parameters, is used to adjust the casting process of the casting model according to the comparison result, thereby adjusting the casting model, or to adjust the engine cylinder head correction model according to the comparison result.
[0089] In one possible implementation, the device further includes:
[0090] The first execution unit, in response to adjusting the casting process according to the comparison result to adjust the casting model, executes the steps of obtaining the casting model of the engine cylinder head and subsequent steps until the entity parameters are consistent with the design parameters.
[0091] In one possible implementation, the device further includes:
[0092] The second execution unit, in response to adjusting the engine cylinder head correction model according to the comparison result, uses the adjusted engine cylinder head correction model as the engine cylinder head correction model, and executes the steps of obtaining the model parameters of the engine cylinder head correction model and subsequent steps until the entity parameters are consistent with the design parameters.
[0093] In one possible implementation, the device further includes:
[0094] The input unit is used to input the casting model into the casting simulation software to obtain the casting model parameters.
[0095] In one possible implementation, the casting model parameters can be, but are not limited to, parameters reflecting whether there are problems with the cylinder head casting process, such as filling, solidification, and stress. Filling refers to the process of pouring molten metal into the mold during casting to fill it completely. Solidification refers to the process of the molten metal in the cylinder head changing from a liquid to a solid state. Stress refers to the internal forces generated between different parts of the cylinder head when it deforms due to external factors (force, humidity, temperature changes, etc.) to resist these external factors and attempt to restore the object from its deformed position to its original position.
[0096] In one possible implementation, the casting simulation software includes finite element simulation software or finite difference simulation software, such as professional casting simulation software like MAGMA, ProCAST, AnyCasting, and Flow-3D.
[0097] The sixth acquisition unit is used to acquire the deformation of the casting model based on the casting model parameters.
[0098] In addition, this application embodiment also provides a test and verification device for engine air passages. The device includes a memory and a processor. The memory is used to store programs or code, and the processor is used to run the programs or code stored in the memory to implement the above-described test and verification method for engine air passages.
[0099] In addition, this application embodiment also provides a computer-readable storage medium, characterized in that the computer-readable storage medium stores code, and when the code is run, the device running the code implements the above-described test and verification method for engine air passage.
[0100] This application provides a testing and verification device for engine intake manifolds. After the first acquisition unit 201 acquires the casting model of the engine cylinder head, the second acquisition unit 202 inputs the casting model into casting simulation software to obtain the deformation of the casting model. Then, the third acquisition unit 203 acquires a modified engine cylinder head model based on the deformation. The fourth acquisition unit 204 then uses selective laser sintering printing technology to print the engine intake manifold portion of the modified engine cylinder head model to obtain a solid model of the engine intake manifold. Next, the fifth acquisition unit 205 acquires the solid parameters of the solid engine intake manifold. The comparison unit 206 then compares the solid parameters with the design parameters. If the comparison result of the comparison unit is that the solid parameters are inconsistent with the design parameters, the adjustment unit 207 adjusts the casting process of the casting model based on the comparison result to adjust the casting model, or adjusts the modified engine cylinder head model based on the comparison result. This application uses casting simulation software to predict the deformation of cylinder head castings during the casting process, and uses printing technology for rapid manufacturing and testing. While ensuring dimensional consistency, it can quickly test the performance indicators of the air passage, thus improving the accuracy and efficiency of air passage development.
[0101] The foregoing provides a detailed description of a testing and verification method, apparatus, and device for an engine air passage provided in this application. The various embodiments in the specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.
[0102] It should be understood that in this application, "at least one (item)" means one or more, and "more than" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.
[0103] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0104] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein can be implemented directly by hardware, a software module executed by a processor, or a combination of both. The software module can be located in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.
[0105] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A test and verification method for engine air intake, characterized in that, The method includes: Obtain the casting model of the engine cylinder head; The casting model is input into the casting simulation software to obtain the deformation of the casting model; Based on the deformation, a modified engine cylinder head model is obtained; Selective laser sintering printing technology was used to print the engine intake port portion of the modified engine cylinder head model to obtain a solid model of the engine intake port. Obtain the physical parameters of the engine air passage entity and compare the physical parameters with the design parameters; In response to the comparison result that the entity parameters are inconsistent with the design parameters, the casting process of the casting model is adjusted according to the comparison result, thereby adjusting the casting model, or the engine cylinder head correction model is adjusted according to the comparison result. The physical parameters include the vortex ratio and flow coefficient of the actual engine air passage entity; The design parameters include the vortex ratio and flow coefficient of the ideal engine air passage body.
2. The method according to claim 1, characterized in that, The method further includes: In response to adjusting the casting process based on the comparison results, thereby adjusting the casting model, the steps of obtaining the casting model of the engine cylinder head and subsequent steps are performed until the solid parameters are consistent with the design parameters.
3. The method according to claim 1, characterized in that, The method further includes: In response to adjusting the engine cylinder head correction model based on the comparison results, the adjusted engine cylinder head correction model is used as the engine cylinder head correction model, and the steps of obtaining the model parameters of the engine cylinder head correction model and subsequent steps are executed until the entity parameters are consistent with the design parameters.
4. The method according to claim 1, characterized in that, The step of inputting the casting model into the casting simulation software to obtain the deformation of the casting model includes: The casting model is input into the casting simulation software to obtain the casting model parameters; The deformation of the casting model is obtained based on the casting model parameters.
5. The method according to claim 4, characterized in that, The casting simulation software includes: finite element simulation software or finite difference simulation software.
6. The method according to claim 1, characterized in that, The material used to print the engine air passage body using selective laser sintering printing technology is polymer powder.
7. The method according to claim 1, characterized in that, The casting model of the engine cylinder head is obtained by sand core design and casting process design according to the actual casting process of the cylinder head.
8. A testing and verification device for engine air passages, characterized in that, The device includes: The first acquisition unit is used to acquire the casting model of the engine cylinder head; The second acquisition unit is used to input the casting model into the casting simulation software to obtain the deformation of the casting model. The third acquisition unit is used to acquire the engine cylinder head correction model based on the deformation. The fourth acquisition unit is used to print the engine intake port portion in the engine cylinder head correction model using selective laser sintering printing technology to obtain a solid model of the engine intake port. The fifth acquisition unit is used to acquire the physical parameters of the engine air passage entity; The comparison unit is used to compare the entity parameters with the design parameters; An adjustment unit, in response to the comparison result of the comparison unit indicating that the entity parameters are inconsistent with the design parameters, is used to adjust the casting process of the casting model according to the comparison result, thereby adjusting the casting model, or to adjust the engine cylinder head correction model according to the comparison result; The physical parameters include the vortex ratio and flow coefficient of the actual engine air passage entity; The design parameters include the vortex ratio and flow coefficient of the ideal engine air passage body.
9. A testing and verification device for engine air passages, characterized in that, The device includes a memory and a processor, the memory being used to store programs or code, and the processor being used to run the programs or code stored in the memory to implement the test and verification method for the engine air passage as described in any one of claims 1-7.
10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores code, and when the code is executed, the device running the code implements the test and verification method for the engine air passage as described in any one of claims 1-7.
Citation Information
Patent Citations
Method and device for testing air passage of engine
CN115931369A