A testing method and device for an engine air passage

Abstract

The present application discloses a method and device for testing an engine air passage. The method includes: obtaining parameters of a first model corresponding to the air passage; determining a casting setting based on the parameters of the first model; obtaining an error setting through simulation, where the simulation is a process of simulating casting the first model using the casting setting, and the error setting is the error between the first model cast using the casting setting and the parameters of the first model; generating parameters of a second model using the casting setting and the error setting; printing a physical entity of the second model according to the parameters of the second model using a plaster 3D printing technology; testing performance parameters of the physical entity, and obtaining a result of the air passage test using the performance parameters as an index. The method disclosed in the present application obtains an error setting through simulation, generates parameters of the second model using the casting setting and the error setting, prints a physical entity of the second model through a plaster 3D technology, and uses the performance parameters of the physical entity as the performance parameters of the air passage, which improves the testing speed of the engine air passage compared with the prior art.

Description

Technical Field

[0001] The present application relates to the technical field of engine testing, and particularly to a method and device for testing an engine air passage. Background Art

[0002] The cylinder head is an important structural component of an engine. The air passage of the engine is located inside the cylinder head, and the air passage of the engine has a complex structure. During the development of the air passage, both the structure of the air passage and the performance parameters of the air passage need to be satisfied. The prior art provides a method for testing an engine air passage.

[0003] The prior art needs to first obtain the three-dimensional model of the designed air passage. A sand core is required during the casting process of the air passage. The prior art prints the sand core by 3D printing technology, casts the air passage using the sand core printed by 3D printing technology, obtains the three-dimensional model of the cast air passage by scanning the cast air passage, compares the three-dimensional model of the designed air passage and the three-dimensional model of the cast air passage, and obtains the test result of the engine air passage through the comparison. However, testing the engine air passage by the prior art is often slow.

[0004] Therefore, how to quickly test the engine air passage has become a problem that those skilled in the art are eager to solve. Summary of the Invention

[0005] Based on the above problems, the present application provides a method and device for testing an engine air passage to solve the problem of slow testing speed of the engine air passage in the prior art.

[0006] The embodiments of the present application disclose a method and device for testing an engine air passage. The method includes the following steps:

[0007] Obtain the parameters of the first model corresponding to the air passage;

[0008] Determine the casting settings based on the parameters of the first model. The casting settings include the steps used when casting the first model and the parameters corresponding to the steps;

[0009] Obtain the error settings through simulation. The simulation is to simulate the process of casting the first model using the casting settings. The error settings are the errors between the first model cast using the casting settings and the parameters of the first model;

[0010] Generate the parameters of the second model using the casting settings and the error settings;

[0011] Print the entity of the second model using gypsum 3D printing technology according to the parameters of the second model;

[0012] Test the performance parameters of the entity, and use the performance parameters as indicators to obtain the results of the airway test.

[0013] Optionally, the test method for the engine airway further includes:

[0014] Determine whether the performance parameter is less than a threshold;

[0015] If the performance parameter is less than the threshold, adjust the casting settings;

[0016] Use the adjusted casting settings as the casting settings to execute the step of obtaining the error settings through simulation.

[0017] Optionally, the step of adjusting the casting settings if the performance parameter is less than the threshold includes:

[0018] Adjust the parameters of the first model;

[0019] Use the adjusted parameters of the first model as the parameters of the first model to execute the step of determining the casting settings based on the parameters of the first model. The casting settings obtained using the adjusted parameters of the first model are different from the casting settings obtained using the parameters of the first model.

[0020] Optionally, the testing of the performance parameters of the entity includes:

[0021] Wrap the entity with resin to obtain a wrapped entity;

[0022] Obtain the chamfer of the valve seat hole;

[0023] Machine the wrapped entity based on the chamfer of the valve seat hole to obtain a test entity;

[0024] Conduct an airway blowing experiment on the test entity to obtain the swirl ratio and flow coefficient of the test entity;

[0025] Use the swirl ratio and the flow coefficient of the test entity as the performance parameters of the entity.

[0026] Optionally, the simulation includes: finite element simulation and finite difference simulation.

[0027] This application also discloses a testing device for an engine airway. The device includes:

[0028] A parameter acquisition module, which acquires the parameters of the first model corresponding to the airway;

[0029] A casting setting module, which determines the casting settings based on the parameters of the first model. The casting settings include the steps used when casting the first model and the parameters corresponding to the steps;

[0030] A simulation module that obtains an error setting through simulation. The simulation is a process of simulating the casting of the first model using the casting setting, and the error setting is the error between the first model cast using the casting setting and the parameters of the first model.

[0031] A second model parameter generation module that generates parameters of a second model using the casting setting and the error setting.

[0032] A printing module that prints a solid of the second model according to the parameters of the second model using gypsum 3D printing technology.

[0033] A testing module that tests the performance parameters of the solid and obtains the result of the airway test using the performance parameters as indicators.

[0034] Optionally, the testing device for the engine airway further includes:

[0035] A judgment module that judges whether the performance parameters are less than a threshold.

[0036] A casting setting adjustment module that adjusts the casting setting if the performance parameters are less than the threshold.

[0037] Use the adjusted casting setting as the casting setting to execute the step of obtaining the error setting through simulation.

[0038] Optionally, the casting setting adjustment module includes:

[0039] A first model parameter adjustment unit that adjusts the parameters of the first model.

[0040] Use the adjusted parameters of the first model as the parameters of the first model to execute the step of determining the casting setting based on the parameters of the first model.

[0041] This application also provides an electronic device, including a memory and a processor, where:

[0042] The memory is used to store a computer program.

[0043] The processor is used to execute the computer program to implement the above-mentioned method for testing the engine airway.

[0044] This application also provides a computer-readable storage medium for storing a computer program, where the computer program, when executed by a processor, implements the above-mentioned method for testing the engine airway.

[0045] Compared with the prior art, this application has the following beneficial effects:

[0046] The test method for the engine air passage in this application obtains the parameters of the first model corresponding to the air passage, determines the casting settings using the parameters of the first model, obtains the error settings through simulation, generates the parameters of the second model using the casting settings and the error settings, obtains the entity of the second model through 3D printing technology, tests the performance parameters of the entity, and uses the performance parameters of the entity as the test result of the engine air passage. Casting the engine takes a lot of time, while the method provided in this application does not require waiting for the casting of the engine air passage. By obtaining the parameters of the second model that is the same as the cast engine air passage, and using 3D printing technology to obtain the entity of the second model, the process of waiting for the casting of the engine air passage is omitted. The entity that can be used for testing the engine air passage is directly obtained using 3D printing technology, and the performance parameters of the entity are tested. Compared with the prior art, the time for testing the engine air passage is reduced. Brief Description of the Drawings

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0048] Figure 1 It is a flowchart of a test method for an engine air passage provided by the present application;

[0049] Figure 2 It is a flowchart of another test method for an engine air passage provided by the present application;

[0050] Figure 3 It is a schematic structural diagram of a test device for an engine air passage provided by the present application. Detailed Embodiments

[0051] As described above, currently, testing the engine air passage often requires casting the engine air passage, and the casting process takes a lot of time. Therefore, printing the core used in the casting process through 3D printing technology can reduce the time to a certain extent. In the above process, the time saved by obtaining the core through 3D printing technology is less, and it still takes a long time to test the engine air passage.

[0052] After research, there are at least two steps in the above-mentioned engine airway test process, namely obtaining a sand core and casting an engine using the sand core. The prior art reduces the time consumed in obtaining the sand core by printing the sand core through 3D printing technology. However, there are certain differences between the engine airway obtained by casting with the sand core printed by 3D printing technology and the engine airway obtained by casting with an actual sand core, which may lead to inaccurate testing. Moreover, compared with obtaining the sand core, the time spent in casting the engine using the sand core is much more. For the above considerations, the present application provides a method and device for testing an engine airway to solve the problem of slow testing speed of the engine airway in the prior art.

[0053] In order to enable those skilled in the art to better understand the solution of the present application, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0054] It can be understood that this method can be applied to a processing device, which is a processing device capable of performing engine airway testing, such as a terminal device or a server capable of performing engine airway testing. This method can be independently executed by the terminal device or the server, or can be applied to a network scenario where the terminal device and the server communicate, and is executed in cooperation with the terminal device and the server. Among them, the terminal device can be a device such as a computer or a mobile phone. The server can be understood as an application server or a Web server. In actual deployment, the server can be an independent server or a cluster server.

[0055] Figure 1 The following is a flowchart of a method for testing an engine airway provided by the present application. The method includes the following steps:

[0056] S101: Obtain the parameters of the first model corresponding to the airway.

[0057] The cylinder head is an important structural component of the engine. The airway of the engine is located inside the cylinder head. During the development of the engine airway, it is necessary to first design a three-dimensional model of the cylinder head and perform subsequent production tests based on the three-dimensional model of the cylinder head. Since the airway of the engine is located inside the cylinder head, after obtaining the three-dimensional model of the cylinder head, the processing device can obtain the parameters of the first model corresponding to the airway. The first model of the cylinder head can be designed through CAD or any other software capable of obtaining a three-dimensional model. The processing device can obtain the parameters of the first model of the airway, and these parameters are used to represent information such as the structure, shape, and / or size of the first model.

[0058] S102: Determine the casting settings based on the parameters of the first model.

[0059] Casting is a method of pouring liquid metal into a casting cavity adapted to the shape of the part and waiting for it to cool and solidify to obtain a casting. The air passage is formed by a sand core in the cylinder head, and the internal cavity of one cylinder head consists of multiple sand cores.

[0060] In actual casting, there are many steps. First, the structure of the sand core needs to be designed, the sand core is manufactured based on the designed structure of the sand core, and the manufactured sand core is assembled. In addition, there are also steps such as pouring liquid metal and solidification of liquid metal.

[0061] Based on the parameters of the first model of the air passage, the processing device can reverse-deduce the steps and the corresponding parameters of the steps through which the entity of the first model can be cast, and the reversed steps and the corresponding parameters of the steps are the casting settings.

[0062] S103: Obtain the error settings through simulation.

[0063] In the actual casting process, there are many errors. For example, when actually pouring liquid metal, the liquid metal has a large buoyancy force on the sand core, and this buoyancy force will have a certain impact on the position of the sand core; when the liquid metal solidifies, the liquid metal will shrink, and the shrinkage will generate internal stress, and the internal stress will form a compressing force on the sand core. The above errors are all physical errors existing in the actual casting process.

[0064] The simulation software will simulate the process of actually casting the air passage, and through calculation, errors such as the internal stress generated when the liquid metal solidifies and the deformation of the air passage can be obtained when casting the entity of the first model using the casting settings. The error between the entity of the first model cast in the actual casting process and the parameters of the first model obtained through simulation is the error setting.

[0065] The simulation method can be finite element simulation or finite difference simulation. Of course, it can also be other simulation forms, which should all fall within the protection scope of this application. And for simulation, casting simulation software such as MAGMA, ProCAST, AnyCasting, Flow-3D, etc. can be used.

[0066] S104: Generate the parameters of the second model using the casting settings and the error settings.

[0067] The processing device can generate the parameters of the second model using the above casting settings and error settings. The parameters of the second model are different from the parameters of the first model, and the difference between the parameters of the second model and the parameters of the first model is obtained using the error settings.

[0068] S105: Use the gypsum 3D printing technology to print the entity of the second model according to the parameters of the second model.

[0069] The gypsum 3D printing technology is not casting, so there are no errors such as internal stress in the casting process. The processing device uses the gypsum 3D printing technology to print the entity of the second model according to the parameters of the second model. The error between the entity of the second model obtained by the gypsum 3D printing technology and the parameters of the second model is about 0.7%, and this error will not affect the performance parameters of the engine air passage. The performance parameters of the entity of the second model obtained by the gypsum 3D printing technology are consistent with the theoretical performance parameters corresponding to the parameters of the second model.

[0070] S106: Test the performance parameters of the entity, and use the performance parameters as indicators to obtain the results of the air passage test.

[0071] The performance parameters here can be obtained by using the air passage swirl ratio and the flow coefficient of the air passage. During the test process, the entity of the second model can be assembled onto the air passage blowing test bench for the air passage blowing test, and parameters such as the air passage swirl ratio and the flow coefficient of the air passage can be obtained through the air passage blowing test. The swirl ratio is one of the parameters used to measure the air movement in the engine cylinder, and the magnitude of the swirl ratio value often has a direct impact on the performance such as the thermal efficiency of the engine. The flow coefficient is an index used to characterize the ability of the gas to pass through the air passage. Use the air passage swirl ratio and the flow coefficient of the air passage as indicators to obtain the results of the air passage test.

[0072] The above is a situation for testing the performance parameters of the entity. In addition to the swirl ratio and the flow coefficient, the entity performance parameters can also be any parameters that can represent the performance of the air passage, and the test method can also be any test method that can obtain the entity performance parameters. The processing device can use the performance parameters as indicators to obtain the results of the air passage test.

[0073] The method provided in this application obtains the error between the parameters of the first model obtained by simulation and the entity of the first model obtained in the actual casting process. The parameters of the second model are obtained through the error, and the entity of the second model is quickly printed according to the parameters of the second model by using the gypsum 3D printing technology, without waiting for a long time for actual casting. The performance parameters of the entity of the second model are used to obtain the results of the air passage test, which reduces the time of the air passage test compared with the prior art. In addition, the roughness of the entity of the second model printed by the gypsum 3D printing technology is lower. This application can accurately obtain the error setting through casting simulation. This error setting is the error between the model and the cast finished product in the actual casting process, and this error can better reflect the deviation of shape and size in the casting process. The blowing test is carried out on the entity of the second model with the actual product size and shape, and the result consistency is higher. The cost is lower compared with actual casting by using the gypsum 3D printing technology.

[0074] Considering the testing process of the engine air passage in the actual application scenario, the present application provides another testing method for the engine air passage. Figure 2 It is a flowchart of another testing method for the engine air passage provided by the present application. The method includes the following steps:

[0075] S201: Obtain the parameters of the first model corresponding to the air passage.

[0076] In the actual casting scenario, it is necessary to first design the three-dimensional model of the air passage. Here, the first model is the three-dimensional model of the air passage, and the processing device obtains the parameters of the first model based on the first model of the air passage.

[0077] S202: Determine the casting settings based on the parameters of the first model.

[0078] The casting settings here may include core design, casting process design, and corresponding parameters. The processing device determines the casting settings based on the parameters of the first model.

[0079] S203: Obtain the error settings through simulation.

[0080] Here, finite element or finite difference simulation software can be used to simulate the casting process of the air passage. The error settings are obtained through simulation. The error settings are the errors corresponding to casting the first model entity using the actual casting settings.

[0081] S204: Generate the parameters of the second model using the casting settings and the error settings.

[0082] The processing device combines the error settings and the casting settings to generate the parameters of the second model.

[0083] S205: Use the gypsum 3D printing technology to print the entity of the second model according to the parameters of the second model.

[0084] S206: Use resin to wrap the entity to obtain a wrapped entity.

[0085] The processing device can strengthen the entity with resin. For example, the surface of the entity is wrapped with resin, and the entity after wrapping with resin is used as the wrapped entity.

[0086] S207: Obtain the chamfer of the valve seat hole.

[0087] The wrapped entity includes a valve seat entity, and the valve seat entity is mainly connected to the valve. The valve seat has a bottom hole, and the chamfer of the bottom hole matches the valve cone angle of the valve. For example, if the cone angle of the valve is 30 degrees, the chamfer of the valve seat hole is 150 degrees; if the cone angle of the valve is 45 degrees, the chamfer of the valve seat hole is 135 degrees.

[0088] S208: Process the wrapped entity based on the chamfer of the valve seat hole to obtain a test entity.

[0089] The processing device obtains the chamfer of the valve seat hole, and processes the wrapped entity based on the chamfer of the valve seat hole. The processing method can be various ways such as cutting or grinding. Through processing, the chamfer of the valve seat hole of the wrapped entity is made to be the same as the angle of the obtained chamfer of the valve seat hole. The processed wrapped entity is used as the test entity, that is, the test entity has a chamfer of the valve seat hole adapted to the valve.

[0090] S209: Conduct an air passage blowing experiment on the test entity to obtain the swirl ratio and flow coefficient corresponding to the test entity.

[0091] Assemble the test entity onto the air passage blowing test bench, conduct an air passage blowing experiment on the test entity, and obtain the swirl ratio and flow coefficient of the test entity through the air passage blowing experiment.

[0092] One test entity corresponds to one chamfer of the valve seat hole. Similarly, a set of swirl ratio and flow coefficient can be obtained. In the actual test process, in order to adapt to various different valves, the method disclosed in this application can be used to obtain multiple wrapped entities. After obtaining multiple wrapped entities, obtain multiple chamfers of the valve seat hole that may be used, and obtain multiple test entities based on the multiple chamfers of the valve seat hole for the multiple wrapped entities. For example, the chamfers of the valve seat hole that may be used are three angles: 150 degrees, 135 degrees, and 120 degrees. Then, three wrapped entities can be generated first using the method disclosed in this application, and the chamfers of the valve seat holes of the three wrapped entities are processed to be 150 degrees, 135 degrees, and 120 degrees respectively, so as to obtain test entities adapted to three different valves. During the test, the air passage blowing experiment can also be conducted on the three test entities respectively to obtain three sets of swirl ratio and flow coefficient. Similarly, the optimal data can be selected from the three sets of swirl ratio and flow coefficient as the performance parameters.

[0093] S210: Determine whether the performance parameter is less than the threshold.

[0094] The threshold here can represent whether the entity is qualified. If it is less than the threshold, it means that the performance parameter of the entity is unqualified, and S209 needs to be executed.

[0095] S211: Adjust the casting settings.

[0096] The processing device can directly adjust the casting settings according to the performance parameter, or can adjust the casting settings by adjusting the parameters of the first model. If the method of adjusting the parameters of the first model is used to adjust the casting settings, then it is necessary to inversely deduce the new casting settings from the adjusted parameters of the first model, and this new casting setting is the adjusted casting setting. The new casting settings inversely deduced from the adjusted parameters of the first model are different from the casting settings obtained from the parameters of the original first model.

[0097] S212: The test is completed.

[0098] Figure 3 The structural schematic diagram of a test device for an engine air passage provided for this application. The test device for the engine air passage includes:

[0099] A parameter acquisition module 301 that acquires parameters of a first model corresponding to the air passage;

[0100] A casting setting module 302 that determines casting settings based on the parameters of the first model. The casting settings include the steps used when casting the first model and the parameters corresponding to the steps;

[0101] A simulation module 303 that obtains error settings through simulation. The simulation is to simulate the process of casting the first model using the casting settings, and the error settings are the errors between the first model cast using the casting settings and the parameters of the first model;

[0102] A second model parameter generation module 304 that generates parameters of a second model using the casting settings and the error settings;

[0103] A printing module 305 that prints a physical entity of the second model according to the parameters of the second model using gypsum 3D printing technology;

[0104] A test module 306 that tests the performance parameters of the physical entity and obtains the result of the air passage test using the performance parameters as indicators.

[0105] The test device for the engine air passage may further include:

[0106] A judgment module that judges whether the performance parameters are less than a threshold;

[0107] A casting setting adjustment module that adjusts the casting settings if the performance parameters are less than the threshold;

[0108] Use the adjusted casting settings as the casting settings to execute the step of obtaining error settings through simulation.

[0109] The casting setting adjustment module includes:

[0110] A first model parameter adjustment unit that adjusts the parameters of the first model;

[0111] Use the adjusted parameters of the first model as the parameters of the first model to execute the step of determining casting settings based on the parameters of the first model.

[0112] In practical applications, the computer-readable storage medium may adopt any combination of one or more computer-readable media. The computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium stores computer-readable program code, and when the computer-readable program code is executed by a processor, the test method for the engine air passage disclosed in the above embodiments is implemented.

[0113] The computer-readable storage medium may, for example, be but is not limited to an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples (a non-exhaustive list) of the computer-readable storage medium include: an electrical connection having one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this embodiment, the computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0114] The computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, which carries the computer-readable program code. Such a propagated data signal may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. The computer-readable signal medium may also be any computer-readable medium other than the computer-readable storage medium, which can send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0115] The program code contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wire, optical fiber, RF, etc., or any suitable combination of the above.

[0116] Computer program code for performing the operations of the present invention may be written in one or more programming languages or combinations thereof. The programming languages include object-oriented programming languages such as Java, Smalltalk, C++, and also include conventional procedural programming languages such as the "C" language or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, executed as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., connected through the Internet using an Internet service provider).

[0117] In some embodiments, the electronic device may be a mobile phone, a tablet computer, a desktop computer, a laptop computer, a notebook computer, an ultra-mobile personal computer (UMPC), a handheld computer, a netbook, a personal digital assistant (PDA), a wearable electronic device, a smart watch, etc. The present application does not impose any special restrictions on the specific forms of the above-mentioned electronic devices.

[0118] It should be noted that the various embodiments in this specification are described in a progressive manner. For the same or similar parts among the various embodiments, reference can be made to each other. Each embodiment focuses on the differences from other embodiments. In particular, for the device embodiments, since they are basically similar to the method embodiments, the description is relatively simple. For the relevant parts, reference can be made to the description of the method embodiments. The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components referred to as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. A person of ordinary skill in the art can understand and implement it without creative work.

[0119] As described above, this is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A test method for an engine air passage, characterized in that Including: Obtain the parameters of the first model corresponding to the air passage; The first model is a designed three-dimensional model; The parameters are used to represent the structure, shape, and / or size of the first model; Determine the casting settings based on the parameters of the first model, where the casting settings include the steps used when casting the first model and the parameters corresponding to the steps; Obtain the error settings through simulation. The simulation is to simulate the process of casting the first model using the casting settings, and the error settings are the errors between the first model entity cast in the actual casting process and the first model parameters obtained through simulation; Generate the parameters of the second model using the casting settings and the error settings; Use the gypsum 3D printing technology to print the entity of the second model according to the parameters of the second model; Test the performance parameters of the entity of the second model, and use the performance parameters as indicators to obtain the results of the air passage test.

2. The method according to claim 1, wherein The method further includes: Judge whether the performance parameters are less than the threshold; If the performance parameters are less than the threshold, adjust the casting settings; Use the adjusted casting settings as the casting settings and execute the step of obtaining the error settings through simulation.

3. The method according to claim 2, wherein The step of if the performance parameters are less than the threshold, then adjust the casting settings includes: Adjust the parameters of the first model; Use the adjusted parameters of the first model as the parameters of the first model and execute the step of determining the casting settings based on the parameters of the first model. The casting settings obtained using the adjusted parameters of the first model are different from the casting settings obtained using the parameters of the first model.

4. The method according to claim 1, characterized in that, The step of testing the performance parameters of the entity includes: Wrap the entity with resin to obtain a wrapped entity; Obtain the chamfer of the valve seat hole; Machine the wrapped entity based on the chamfer of the valve seat hole to obtain a test entity; Conduct an air passage blowing experiment on the test entity to obtain the swirl ratio and flow coefficient of the test entity; Use the swirl ratio and the flow coefficient of the test entity as the performance parameters of the entity.

5. The method according to claim 1, characterized in that, The simulation includes: finite element simulation and finite difference simulation.

6. A test device for an engine air passage, characterized in that, Including: A parameter acquisition module that acquires the parameters of the first model corresponding to the air passage; The first model is a designed three-dimensional model; The parameters are used to represent the structure, shape, and / or size of the first model; A casting setting module that determines the casting settings based on the parameters of the first model. The casting settings include the steps used when casting the first model and the parameters corresponding to the steps; A simulation module that obtains the error settings through simulation. The simulation is to simulate the process of casting the first model using the casting settings, and the error settings are the errors between the first model entity cast in the actual casting process and the first model parameters obtained through simulation; A second model parameter generation module that generates the parameters of the second model using the casting settings and the error settings; A printing module that uses the gypsum 3D printing technology to print the entity of the second model according to the parameters of the second model; A testing module that tests the performance parameters of the entity of the second model and uses the performance parameters as indicators to obtain the results of the air passage test.

7. The device according to claim 6, characterized in that, The device further includes: A judgment module that judges whether the performance parameter is less than a threshold value; A casting setting adjustment module that adjusts the casting settings if the performance parameter is less than the threshold value; Use the adjusted casting settings as the casting settings to execute the step of obtaining the error settings through simulation.

8. The device according to claim 6, characterized in that, The casting setting adjustment module includes: A first model parameter adjustment unit that adjusts the parameters of the first model; Use the adjusted parameters of the first model as the parameters of the first model to execute the step of determining the casting settings based on the parameters of the first model.

9. An electronic device, characterized in that, It includes a memory and a processor, wherein: The memory is used to store computer programs; The processor is used to execute the computer program to implement the test method for the engine air passage according to any one of claims 1-5.

10. A computer-readable storage medium, characterized in that, Used to store a computer program, wherein the computer program, when executed by the processor, implements the test method for the engine air passage according to any one of claims 1-5.

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