Design method and device of technological cylinder cover, storage medium and computer equipment

Abstract

The embodiment of the invention provides a process cylinder cover design method and device, a storage medium and computer equipment. The method comprises the following steps: establishing a first finite element analysis model of the engine assembly product; loading the first finite element analysis model according to a first axial force to obtain a first bolt deformation amount; establishing a second finite element analysis model of the engine process product; loading the second finite element analysis model according to the first axial force to obtain a second bolt deformation amount; and designing the process cylinder cover according to the first finite element analysis model, the second finite element analysis model, the first bolt deformation and the second bolt deformation. According to the technical scheme, the technological cylinder cover is designed according to the first finite element analysis model, the second finite element analysis model, the first bolt deformation amount and the second bolt deformation amount, rapid design of the technological cylinder cover is achieved, and the problems that the technological cylinder cover is large in design difficulty and low in analysis processing efficiency are solved; and the structural design period of the process cylinder cover is shortened.

Description

[0001] The present application relates to the technical field of engines, and in particular to a design method and device for a process cylinder head, a storage medium and a computer device.

[0002] After the engine is assembled, the cylinder body and the cylinder hole are deformed due to factors such as bolt axial force. The deformation of the cylinder hole leads to weaker sealing performance of the piston ring, larger friction between the piston and the cylinder hole, and problems such as large piston air leakage, high oil consumption, and rising piston friction power, which reduces the performance of the engine.

[0003] In the related art, a process cylinder head is used to assemble the engine cylinder body, and the cylinder hole is machined and honed. The process cylinder head simulates the stiffness distribution of the product cylinder head. After the process cylinder head is assembled, the cylinder hole produces the same deformation as the product cylinder head. The corresponding cylinder hole deformation is removed during machining and honing to achieve small cylinder hole deformation after the product cylinder head is assembled. However, in the related art, the error in removing the corresponding cylinder hole deformation during machining and honing is large, and it takes a long time, so that the designed process cylinder head has a large error, low accuracy, and low efficiency.

[0004] Therefore, the embodiments of the present application provide a design method and device for a process cylinder head, a storage medium and a computer device to realize rapid design of the process cylinder head, solve the problems of large design difficulty and low analysis and processing efficiency, and shorten the structure design cycle of the process cylinder head.

[0005] In one aspect, the embodiments of the present application provide a design method for a process cylinder head, comprising:

[0006] establishing a first finite element analysis model of an engine assembly product;

[0007] loading the first finite element analysis model according to a first axial force to obtain a first bolt deformation;

[0008] establishing a second finite element analysis model of an engine process product;

[0009] loading the second finite element analysis model according to the first axial force to obtain a second bolt deformation;

[0010] designing a process cylinder head according to the first finite element analysis model, the second finite element analysis model, the first bolt deformation, and the second bolt deformation.

[0011] Optionally, the first finite element analysis model of the engine assembly product is established, comprising:

[0012] ​​​establishing a first finite element analysis model of a cylinder head or cylinder head assembly, a cylinder block or cylinder block assembly, a cylinder gasket or cylinder gasket assembly, and a cylinder head bolt of an engine assembly product.

[0013] Optionally, the second finite element analysis model of the engine process product comprises:

[0014] establishing a second finite element analysis model of a cylinder head or cylinder head assembly, a cylinder block or cylinder block assembly, a cylinder gasket or cylinder gasket assembly, and a cylinder head bolt of an engine process product.

[0015] Optionally, the process cylinder head is designed according to the stiffness of the cylinder head or cylinder head assembly in the first finite element analysis model, the stiffness of the cylinder head or cylinder head assembly in the second finite element analysis model, the first bolt deformation, and the second bolt deformation.

[0016] designing the process cylinder head according to the stiffness of the cylinder head or cylinder head assembly in the first finite element analysis model, the stiffness of the cylinder head or cylinder head assembly in the second finite element analysis model, the first bolt deformation, and the second bolt deformation.

[0017] Optionally, the process cylinder head is designed according to the stiffness of the cylinder head or cylinder head assembly in the first finite element analysis model, the stiffness of the cylinder head or cylinder head assembly in the second finite element analysis model, the first bolt deformation, and the second bolt deformation.

[0018] When the stiffness of the cylinder head or cylinder head assembly in the second finite element analysis model is a first set value of the stiffness of the cylinder head or cylinder head assembly in the first finite element analysis model, and the shrinkage between the first bolt deformation and the second bolt deformation is less than a second set value, the process cylinder head is determined.

[0019] Optionally, the engine assembly product comprises a plurality of cylinder head bolts, and the first bolt deformation comprises a cylinder hole deformation corresponding to each cylinder head bolt in the engine assembly product.

[0020] Optionally, the engine process product comprises a plurality of cylinder head bolts, and the second bolt deformation comprises a cylinder hole deformation corresponding to each cylinder head bolt in the engine process product.

[0021] In another aspect, an embodiment of the present application provides a design device of a process cylinder head, comprising:

[0022] The first establishing module is configured to establish a first finite element analysis model of an engine assembly product.

[0023] The first loading module is configured to load the first finite element analysis model according to a first axial force to obtain a first bolt deformation.

[0024] The second establishing module is configured to establish a second finite element analysis model of an engine process product.

[0025] The second loading module is configured to load the second finite element analysis model according to the first axial force to obtain a second bolt deformation amount.

[0026] The design module is configured to design a process cylinder cover according to the first finite element analysis model, the second finite element analysis model, the first bolt deformation amount, and the second bolt deformation amount.

[0027] In another aspect, an embodiment of the present application provides a storage medium including a stored program, wherein the program controls a device in which the storage medium is located to perform the method for designing a process cylinder cover when the program is executed.

[0028] In another aspect, an embodiment of the present application provides a computer device including a memory and a processor, the memory being configured to store information including program instructions, and the processor being configured to control execution of the program instructions, wherein the program instructions are loaded and executed by the processor to implement the steps of the method for designing a process cylinder cover.

[0029] In the technical scheme of the method for designing a process cylinder cover provided by the embodiment of the present application, a first finite element analysis model of an engine assembly product is established, the first finite element analysis model is loaded according to a first axial force to obtain a first bolt deformation amount, a second finite element analysis model of an engine process product is established, the second finite element analysis model is loaded according to the first axial force to obtain a second bolt deformation amount, and a process cylinder cover is designed according to the first finite element analysis model, the second finite element analysis model, the first bolt deformation amount, and the second bolt deformation amount. In the technical scheme provided by the embodiment of the present application, the process cylinder cover is designed according to the first finite element analysis model, the second finite element analysis model, the first bolt deformation amount, and the second bolt deformation amount, which realizes rapid design of the process cylinder cover, solves the problems of great design difficulty and low analysis and processing efficiency of the process cylinder cover, and shortens the structural design cycle of the process cylinder cover. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0031] Figure 1 A flowchart of a method for designing a process cylinder cover provided by the related art;

[0032] Figure 2 A flowchart of a method for designing a process cylinder cover provided by an embodiment of the present application;

[0033] Figure 3 This is a schematic diagram of a design device for a process cylinder head according to an embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of a computer device provided in an embodiment of the present invention.

Detailed Implementation Methods

[0035] To better understand the technical solution of the present invention, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] It should be understood that the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0037] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” as used in the embodiments of this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0038] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0039] The key to a good process cylinder head design lies in whether it has the same rigidity distribution as the product cylinder head.

[0040] The related technology provides a design method for a process cylinder head. Figure 1 A flowchart of a process cylinder head design method provided for related technologies, such as Figure 1 As shown, the process cylinder head design method includes: 1. Determining parameters such as bolt height and hole diameter, and establishing an initial process cylinder head structure based on experience. 2. Using finite element analysis, establishing a finite element analysis model considering components such as the product cylinder head / process cylinder head, cylinder head bolts, cylinder block (cylinder liner), and cylinder head gasket. 3. Handling the cylinder bore deformation of each cylinder bore in the engine, processing the deformation into 2nd-5th order (or additionally considering 0th and 6th-8th order) deformation amounts through Fourier transform. 4. Comparing the Fourier cylinder bore deformation amounts corresponding to the product cylinder head and process cylinder head states, and optimizing the process cylinder head structure accordingly. 5. Repeating steps 2-4 until all objectives are achieved, completing the process cylinder head structure design.

[0041] In related technologies, taking a common 4-cylinder inline engine as an example, it is necessary to complete 5-10 height evaluation points for each of the four cylinders, along with deformation data of the 2nd, 3rd, 4th, or even more orders, generating at least 60 evaluation indicators. This results in a large amount of post-processing data and low efficiency. Coupling issues may exist between the evaluation points; structural optimization for one indicator may affect other target evaluation points (e.g., between cylinders, or between adjacent orders), leading to unsatisfactory optimization results and low optimization efficiency. Furthermore, the post-processing analysis chain is long, and the evaluation indicators cannot directly correspond to the cylinder head stiffness distribution, making it inconvenient to utilize finite element automatic optimization methods (such as topology optimization).

[0042] To address the technical problems in related technologies, one embodiment of the present invention provides a design method for a process cylinder head. Figure 2 A flowchart illustrating a design method for a process cylinder head according to an embodiment of the present invention is shown below. Figure 2 As shown, the method includes:

[0043] Step 102: Establish the first finite element analysis model of the engine assembly product.

[0044] In this embodiment of the invention, each step is performed by a computer device. For example, the computer device includes a computer, a tablet computer, etc.

[0045] Specifically, a first finite element analysis model is established for the cylinder head or cylinder head assembly, cylinder block or cylinder block assembly, cylinder head gasket or cylinder head gasket assembly, and cylinder head bolts of the engine assembly product. The cylinder head of the engine assembly product is the product cylinder head.

[0046] Step 104: Apply the first axial force to the first finite element analysis model to obtain the deformation of the first bolt.

[0047] In this embodiment of the invention, the engine assembly includes multiple cylinder head bolts, and the first bolt deformation includes the cylinder bore deformation corresponding to each cylinder head bolt in the engine assembly. For example, if there are 10 cylinder head bolts, the cylinder bore deformation corresponding to each cylinder head bolt is X1-X10, where X1-X10 is the target value for the process cylinder head design.

[0048] In the embodiment of the present application, the mechanism of the cylinder bore deformation is that the stiffness system of the cylinder head, cylinder gasket, cylinder body (cylinder sleeve) and cylinder head bolt is deformed under the clamping of the bolt axial force, the cylinder bore deformation is the deflection of the cylinder body in the longitudinal direction after being pressed, the cylinder bore deformation of different angles is the longitudinal deflection of the cylinder bore, that is, the cylinder bore deformation of the section circle. The bolt axial force is the excitation, the cylinder bore deformation is the response, and the shrinkage deformation of the cylinder head, cylinder gasket and cylinder body after being clamped is the transmission path of the excitation to the response. The engine cylinder head bolts are assembled by the angle method, and it can be considered that the bolt axial forces are the same, that is, the excitations are the same, the cylinder bore deformations are the same, that is, the responses are the same, and the transmission paths are the same. The same transmission path represents that the shrinkage amounts of the process / product cylinder head, cylinder gasket and cylinder body clamped by the cylinder head bolt are the same. The clamping of the bolt axial force is simulated by the finite element analysis, which is realized by the plane loading with the same size and direction between the cylinder head nut and the cylinder body thread, and the shrinkage amount of the bolt loading surface is the shrinkage amount of the clamped system. The cylinder bore deformations are consistent, and the shrinkage amounts of the bolt shrinkage surfaces are consistent. Therefore, the shrinkage amount of the cylinder head bolt can be used as an evaluation index for the design of the process cylinder head.

[0049] In the embodiment of the present application, the first axial force can be set according to the actual situation, and the first axial force can be the actual axial force of the assembled engine assembly product.

[0050] Step 106, a second finite element analysis model of the engine process product is established.

[0051] Specifically, the second finite element analysis model of the cylinder head or cylinder head assembly, the cylinder body or cylinder body assembly, the cylinder gasket or cylinder gasket assembly and the cylinder head bolt of the engine process product is established. The cylinder head of the engine process product is a process cylinder head.

[0052] Step 108, the second finite element analysis model is loaded according to the first axial force, and the second bolt deformation amount is obtained.

[0053] In the embodiment of the present application, the engine process product includes a plurality of cylinder head bolts, and the second bolt deformation amount includes the cylinder bore deformation amount corresponding to each cylinder head bolt in the engine process product. For example, there are 10 cylinder head bolts, and the cylinder bore deformation amount corresponding to the cylinder head bolt is x1-x10. x1 is compared with X1, x2 is compared with X2, and so on. If xn>Xn, it indicates that the stiffness of the process cylinder head is lower than that of the product cylinder head, and the stiffness of the process cylinder head needs to be strengthened. This step can be automatically optimized by using topology optimization and the like.

[0054] Step 110, a process cylinder head is designed according to the first finite element analysis model, the second finite element analysis model, the first bolt deformation amount and the second bolt deformation amount.

[0055] Specifically, the process cylinder head is designed according to the stiffness of the cylinder head or the cylinder head assembly in the first finite element analysis model, the stiffness of the cylinder head or the cylinder head assembly in the second finite element analysis model, the first bolt deformation and the second bolt deformation.

[0056] In the embodiment of the present application, when the stiffness of the cylinder head or the cylinder head assembly in the second finite element analysis model is a first set value of the stiffness of the cylinder head or the cylinder head assembly in the first finite element analysis model, and the shrinkage between the first bolt deformation and the second bolt deformation is less than a second set value, the process cylinder head is determined.

[0057] In the embodiment of the present application, the first set value and the second set value can be set according to actual conditions, for example, the first set value is 100%-105%, and the second set value is 3%. That is, the overall stiffness of the process cylinder head is about 100%-105% of the product cylinder head, and the shrinkage between the bolts is less than 3%, so that a more ideal process cylinder head structure can be achieved, and the design of the process cylinder head achieves the target.

[0058] In the technical scheme provided by the embodiment of the present application, the first finite element analysis model of the engine assembly product is established, the first bolt deformation is obtained by loading the first axial force on the first finite element analysis model, the second finite element analysis model of the engine process product is established, the second bolt deformation is obtained by loading the first axial force on the second finite element analysis model, and the process cylinder head is designed according to the first finite element analysis model, the second finite element analysis model, the first bolt deformation and the second bolt deformation. In the technical scheme provided by the embodiment of the present application, the process cylinder head is designed according to the first finite element analysis model, the second finite element analysis model, the first bolt deformation and the second bolt deformation, which realizes the rapid design of the process cylinder head, solves the problems of large design difficulty and low analysis and processing efficiency of the process cylinder head, and shortens the structure design cycle of the process cylinder head.

[0059] In the technical scheme provided by the embodiment of the present application, compared with the analysis method of Fourier transform processing cylinder hole deformation, the post-processing process is reduced, and the analysis result can be directly evaluated. The evaluation points that can be evaluated at the same time are reduced from more than 60 to 10 (4-cylinder engine has 10 evenly distributed cylinder head bolts), so that the structure optimization scheme is more effective, and the automatic optimization method such as topology optimization is facilitated, and the design efficiency is greatly improved.

[0060] In the technical scheme provided by the embodiment of the present application, the optimization difficulty of the process cylinder head is reduced, and the optimization efficiency and optimization effect are obviously improved. According to experiments, the optimization efficiency can be improved by about 70%.

[0061] An embodiment of the present application provides a design device of a process cylinder head. Figure 3 A structural schematic diagram of the design device of the process cylinder head provided by an embodiment of the present application is shown in Figure 3As shown, the device comprises a first establishing module 11, a first loading module 12, a second establishing module 13, a second loading module 14 and a design module 15.

[0062] The first establishing module 11 is configured to establish a first finite element analysis model of an engine assembly product.

[0063] The first loading module 12 is configured to load the first finite element analysis model according to a first axial force to obtain a first bolt deformation amount.

[0064] The second establishing module 13 is configured to establish a second finite element analysis model of an engine process product.

[0065] The second loading module 14 is configured to load the second finite element analysis model according to the first axial force to obtain a second bolt deformation amount.

[0066] The design module 15 is configured to design a process cylinder cover according to the first finite element analysis model, the second finite element analysis model, the first bolt deformation amount and the second bolt deformation amount.

[0067] In the embodiment of the application, the first establishing module 11 is specifically configured to establish a first finite element analysis model of a cylinder cover or a cylinder cover assembly, a cylinder body or a cylinder body assembly, a cylinder gasket or a cylinder gasket assembly and a cylinder cover bolt of the engine assembly product.

[0068] In the embodiment of the application, the second establishing module 13 is specifically configured to establish a second finite element analysis model of a cylinder cover or a cylinder cover assembly, a cylinder body or a cylinder body assembly, a cylinder gasket or a cylinder gasket assembly and a cylinder cover bolt of the engine process product.

[0069] In the embodiment of the application, the design module 15 is specifically configured to design a process cylinder cover according to the stiffness of the cylinder cover or the cylinder cover assembly in the first finite element analysis model, the stiffness of the cylinder cover or the cylinder cover assembly in the second finite element analysis model, the first bolt deformation amount and the second bolt deformation amount.

[0070] In the embodiment of the application, the design module 15 is specifically configured to determine the process cylinder cover when the stiffness of the cylinder cover or the cylinder cover assembly in the second finite element analysis model is a first set value of the stiffness of the cylinder cover or the cylinder cover assembly in the first finite element analysis model, and the shrinkage between the first bolt deformation amount and the second bolt deformation amount is less than a second set value.

[0071] In the embodiment of the application, the engine assembly product comprises a plurality of cylinder cover bolts, and the first bolt deformation amount comprises a cylinder hole deformation amount corresponding to each cylinder cover bolt in the engine assembly product.

[0072] In the embodiment of the application, the engine process product comprises a plurality of cylinder cover bolts, and the second bolt deformation amount comprises a cylinder hole deformation amount corresponding to each cylinder cover bolt in the engine process product.

[0073] The technical scheme provided by the embodiment of the present application comprises the following steps: a first finite element analysis model of an engine assembly product is established; the first finite element analysis model is loaded according to a first axial force to obtain a first bolt deformation amount; a second finite element analysis model of an engine process product is established; the second finite element analysis model is loaded according to the first axial force to obtain a second bolt deformation amount; and a process cylinder cover is designed according to the first finite element analysis model, the second finite element analysis model, the first bolt deformation amount and the second bolt deformation amount. In the technical scheme provided by the embodiment of the present application, the process cylinder cover is designed according to the first finite element analysis model, the second finite element analysis model, the first bolt deformation amount and the second bolt deformation amount, so that the rapid design of the process cylinder cover is realized, the problems of great design difficulty and low analysis and processing efficiency of the process cylinder cover are solved, and the structural design cycle of the process cylinder cover is shortened.

[0074] The design device of the process cylinder cover provided by the embodiment of the present application can be used to realize the design method of the process cylinder cover in the above Figure 2 The specific description can be referred to the embodiment of the design method of the process cylinder cover.

[0075] The embodiment of the present application provides a storage medium, which comprises a stored program, wherein when the program is running, the device where the storage medium is located is controlled to perform each step of the embodiment of the design method of the process cylinder cover, and the specific description can be referred to the embodiment of the design method of the process cylinder cover.

[0076] The embodiment of the present application provides a computer device, which comprises a memory and a processor, the memory is used to store information comprising program instructions, and the processor is used to control the execution of the program instructions, the program instructions are loaded and executed by the processor to realize each step of the embodiment of the design method of the process cylinder cover, and the specific description can be referred to the embodiment of the design method of the process cylinder cover.

[0077] Figure 4 A schematic diagram of a computer device provided by the embodiment of the present application is shown in FIG. 20. Figure 4 As shown in FIG. 20, the computer device 20 of the embodiment comprises a processor 21, a memory 22 and a computer program 23 stored in the memory 22 and executable on the processor 21, and the computer program 23 realizes the design method applied to the process cylinder cover in the embodiment when executed by the processor 21, and details are not repeated here. Alternatively, the computer program realizes the functions of each model / unit in the design device of the process cylinder cover in the embodiment when executed by the processor 21, and details are not repeated here.

[0078] The computer device 20 comprises, but is not limited to, the processor 21 and the memory 22. Those skilled in the art can understand that Figure 4The computer device 20 is only an example and does not constitute a limitation on the computer device 20, which can include more or fewer components than shown, or combine some components, or have different components, for example, the computer device can also include an input / output device, a network access device, a bus, etc.

[0079] The processor 21 can be a central processing unit (CPU), and can also be other general-purpose processors, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor.

[0080] The memory 22 can be an internal storage unit of the computer device 20, for example, a hard disk or a memory of the computer device 20. The memory 22 can also be an external storage device of the computer device 20, for example, a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. Further, the memory 22 can include both the internal storage unit and the external storage device of the computer device 20. The memory 22 is used to store computer programs and other programs and data required by the computer device. The memory 22 can also be used to temporarily store data that has been output or will be output.

[0081] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described system, device and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be described here.

[0082] In several embodiments provided by the present application, it should be understood that the disclosed system, device and method can be implemented by other means. For example, the above-described device embodiments are only schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units or components shown or discussed can be indirect coupling or communication connection through some interfaces, devices or units, and can be electrical, mechanical or other forms.

[0083] The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, i.e., may be located in one place, or may be distributed to multiple network units. Part or all of the units may be selected according to actual needs to achieve the purpose of the embodiment.

[0084] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of hardware plus software functional unit.

[0085] The integrated unit realized in the form of software functional unit can be stored in a computer readable storage medium. The software functional unit stored in a storage medium includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute part of the steps of the method described in each embodiment of the present application. The foregoing storage medium includes a variety of storage media that can store program codes, such as a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0086] The above is only the preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method of designing a process head, characterized by, The method comprises the following steps: establishing a first finite element analysis model of an engine assembly product; loading the first finite element analysis model according to a first axial force to obtain a first bolt deformation amount; establishing a second finite element analysis model of an engine process product; loading the second finite element analysis model according to the first axial force to obtain a second bolt deformation amount; designing a process cylinder cover according to the first finite element analysis model, the second finite element analysis model, the first bolt deformation amount and the second bolt deformation amount.

2. The method of claim 1, wherein, The step of establishing the first finite element analysis model of the engine assembly product comprises: establishing a first finite element analysis model of a cylinder cover or a cylinder cover assembly, a cylinder body or a cylinder body assembly, a cylinder gasket or a cylinder gasket assembly and a cylinder cover bolt of the engine assembly product.

3. The method of claim 1, wherein, The step of establishing the second finite element analysis model of the engine process product comprises: establishing a second finite element analysis model of a cylinder cover or a cylinder cover assembly, a cylinder body or a cylinder body assembly, a cylinder gasket or a cylinder gasket assembly and a cylinder cover bolt of the engine process product.

4. The method of claim 1, wherein, The step of designing the process cylinder cover according to the first finite element analysis model, the second finite element analysis model, the first bolt deformation amount and the second bolt deformation amount comprises: designing the process cylinder cover according to a stiffness of the cylinder cover or the cylinder cover assembly in the first finite element analysis model, a stiffness of the cylinder cover or the cylinder cover assembly in the second finite element analysis model, the first bolt deformation amount and the second bolt deformation amount.

5. The method of claim 4, wherein, The step of designing the process cylinder cover according to the stiffness of the cylinder cover or the cylinder cover assembly in the first finite element analysis model, the stiffness of the cylinder cover or the cylinder cover assembly in the second finite element analysis model, the first bolt deformation amount and the second bolt deformation amount comprises: when the stiffness of the cylinder cover or the cylinder cover assembly in the second finite element analysis model is a first set value of the stiffness of the cylinder cover or the cylinder cover assembly in the first finite element analysis model, and a shrinkage amount between the first bolt deformation amount and the second bolt deformation amount is less than a second set value, determining the process cylinder cover.

6. The method of claim 1, wherein, The engine assembly product comprises a plurality of cylinder cover bolts, and the first bolt deformation amount comprises a cylinder hole deformation amount corresponding to each cylinder cover bolt in the engine assembly product.

7. The method of claim 1, wherein, The engine process product comprises a plurality of cylinder cover bolts, and the second bolt deformation amount comprises a cylinder hole deformation amount corresponding to each cylinder cover bolt in the engine process product.

8. A design apparatus of a process head, characterized by comprising: The method comprises the following steps: a first establishing module for establishing a first finite element analysis model of an engine assembly product; a first loading module for loading the first finite element analysis model according to a first axial force to obtain a first bolt deformation amount; a second establishing module for establishing a second finite element analysis model of an engine process product; a second loading module for loading the second finite element analysis model according to the first axial force to obtain a second bolt deformation amount; a designing module for designing a process cylinder cover according to the first finite element analysis model, the second finite element analysis model, the first bolt deformation amount and the second bolt deformation amount.

9. A storage medium, characterized by The storage medium comprises a stored program, wherein when the program is running, the device where the storage medium is located performs the method for designing the process cylinder cover according to any one of claims 1 to 7.

10. A computer device comprising a memory for storing information including program instructions, and a processor for controlling execution of the program instructions, characterized in that, The program instructions, when loaded and executed by the processor, implement the steps of the method for designing a process cylinder head according to any one of claims 1 to 7.

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