Crankshaft hole adjustment method, equipment, storage medium and device

Abstract

The present invention discloses a crankshaft bore adjustment method, apparatus, storage medium, and device. The method comprises: determining a target torque parameter and a target temperature; increasing the amount of protrusion of the lower cylinder crankshaft bore based on the target temperature; and increasing the amount of protrusion of the lower cylinder crankshaft bore based on the target torque parameter. The present invention increases the amount of protrusion of the lower cylinder crankshaft bore based on the target torque parameter and the target temperature, thereby preventing deformation of the reassembled portion of the upper and lower cylinder crankshaft bores after disassembly and reassembly.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and in particular to a crankshaft hole adjustment method, equipment, storage medium and device. Background Art

[0002] Nowadays, automobile engines are formed by combining an upper cylinder block and a lower cylinder block. Due to certain specific needs, the upper cylinder block and the lower cylinder block of the engine need to be disassembled and reassembled. However, when the upper cylinder block and the lower cylinder block are combined, the crankshaft hole of the upper cylinder block and the crankshaft hole of the lower cylinder block cannot be aligned, resulting in deformation of the crankshaft hole.

[0003] The above content is only used to assist in understanding the technical solution of the present invention and does not constitute an admission that the above content is prior art. Summary of the Invention

[0004] The main purpose of the present invention is to provide a crankshaft hole adjustment method, equipment, storage medium and device, aiming to solve the technical problem of crankshaft hole deformation caused by disassembly and reassembly of the upper cylinder block and lower cylinder block of the engine.

[0005] To achieve the above object, the present invention provides a crankshaft hole adjustment method, which comprises the following steps:

[0006] Determine target torque parameters and target temperature;

[0007] increasing the outward displacement of the crankshaft hole of the lower cylinder block based on the target temperature;

[0008] The outward displacement of the lower cylinder crankshaft hole is increased based on the target torque parameter.

[0009] Optionally, after the step of increasing the outward displacement of the lower cylinder crankshaft hole based on the target temperature, the method further comprises:

[0010] The crankshaft bore temperature of the upper cylinder block is maintained constant according to the target temperature.

[0011] Optionally, the target temperature includes a first target temperature and a second target temperature, the first target temperature is higher than the second target temperature, the first target temperature is used to increase the outward displacement of the crankshaft hole of the lower cylinder, and the second target temperature is used to keep the crankshaft hole temperature of the upper cylinder constant.

[0012] Optionally, the step of determining the target torque parameter and the target temperature includes:

[0013] Determine target torque parameters according to assembly torque parameters;

[0014] The target temperature is determined based on the ambient temperature and the temperature difference between the upper and lower cylinders.

[0015] Optionally, the step of determining the target torque parameter according to the assembly torque parameter includes:

[0016] The target torque parameter is determined according to the assembly torque parameter and the torque parameter range.

[0017] Optionally, the step of determining the target torque parameter according to the assembly torque parameter further includes:

[0018] The target torque parameter is determined according to the assembly torque parameter and the angle parameter range.

[0019] Optionally, the step of determining the target temperature according to the ambient temperature and the temperature difference between the upper cylinder and the lower cylinder includes:

[0020] Determine the target temperature of the upper cylinder according to the ambient temperature;

[0021] The target temperature of the lower cylinder is determined according to the temperature difference between the upper cylinder and the lower cylinder and the target temperature of the upper cylinder.

[0022] In addition, to achieve the above-mentioned purpose, the present invention also proposes a crankshaft hole adjustment device, which includes a memory, a processor, and a crankshaft hole adjustment program stored in the memory and run on the processor, and the crankshaft hole adjustment program is configured to implement the crankshaft hole adjustment method described above.

[0023] In addition, to achieve the above-mentioned purpose, the present invention also proposes a storage medium, on which a crankshaft hole adjustment program is stored. When the crankshaft hole adjustment program is executed by a processor, the crankshaft hole adjustment method described above is implemented.

[0024] In addition, to achieve the above-mentioned purpose, the present invention also provides a crankshaft hole adjustment device, which includes: a data determination module and a crankshaft hole enlargement module;

[0025] The data determination module is used to determine the target torque parameter and the target temperature. The crankshaft hole is divided into an upper cylinder crankshaft hole and a lower cylinder crankshaft hole;

[0026] The crankshaft hole enlarging module is used to increase the outward displacement of the lower cylinder crankshaft hole based on the target temperature;

[0027] The crankshaft hole enlarging module is further used to increase the outward displacement of the lower cylinder crankshaft hole based on the target torque parameter.

[0028] The present invention discloses a crankshaft bore adjustment method, apparatus, storage medium, and device. The method comprises: determining a target torque parameter and a target temperature; increasing the amount of protrusion of the lower cylinder crankshaft bore based on the target temperature; and increasing the amount of protrusion of the lower cylinder crankshaft bore based on the target torque parameter. The present invention increases the amount of protrusion of the lower cylinder crankshaft bore based on the target torque parameter and the target temperature, thereby preventing deformation of the reassembled portion of the upper and lower cylinder crankshaft bores after disassembly and reassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural diagram of a crankshaft hole adjustment device in a hardware operating environment according to an embodiment of the present invention;

[0030] Figure 2 Schematic diagram of the process of the first embodiment of the crankshaft hole adjustment method of the present invention;

[0031] Figure 3 Schematic diagram of the process of the second embodiment of the crankshaft hole adjustment method of the present invention;

[0032] Figure 4 Schematic diagram of the process of the third embodiment of the crankshaft hole adjustment method of the present invention;

[0033] Figure 5 This is a structural block diagram of the first embodiment of the crankshaft hole adjustment device of the present invention.

[0034] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0035] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0036] Reference Figure 1 , Figure 1 This is a schematic diagram of the crankshaft hole adjustment device structure in the hardware operating environment involved in the embodiment of the present invention.

[0037] like Figure 1As shown, the crankshaft hole adjustment device may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to implement communication between these components. The user interface 1003 may include a display screen. Optionally, the user interface 1003 may also include a standard wired interface or a wireless interface. In the present invention, the wired interface of the user interface 1003 may be a USB interface. The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a wireless fidelity (Wi-Fi) interface). The memory 1005 may be a high-speed random access memory (RAM) or a non-volatile memory (NVM), such as a disk storage device. The memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0038] Those skilled in the art will understand that Figure 1 The structure shown in the figure does not constitute a limitation of the crankshaft hole adjustment device, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0039] like Figure 1 As shown, the memory 1005 identified as a computer storage medium may include an operating system, a network communication module, a user interface module, and a crankshaft bore adjustment program.

[0040] exist Figure 1 In the crankshaft hole adjustment device shown, the network interface 1004 is mainly used to connect to the background server and communicate data with the background server; the user interface 1003 is mainly used to connect to the user device; the crankshaft hole adjustment device calls the crankshaft hole adjustment program stored in the memory 1005 through the processor 1001, and executes the crankshaft hole adjustment method provided by the embodiment of the present invention.

[0041] Based on the above hardware structure, an embodiment of the crankshaft hole adjustment method of the present invention is proposed.

[0042] Reference Figure 2 , Figure 2 1 is a flow chart of a first embodiment of a crankshaft hole adjustment method according to the present invention, and provides a first embodiment of a crankshaft hole adjustment method according to the present invention.

[0043] Step S10: Determine target torque parameters and target temperature.

[0044] It should be noted that the execution subject of this embodiment can be a computer software device with data processing, network communication and program running functions, such as a crankshaft hole adjustment device, or other electronic devices that can achieve the same or similar functions. This embodiment does not impose any restrictions on this.

[0045] It should be understood that in actual production, the upper and lower cylinder blocks are assembled at room temperature, and the bolts are tightened directly according to the torque requirements for engine assembly on the product drawing. Then the crankshaft hole is processed, and the crankshaft hole is bored and reamed using the current conventional boring tool with guide bar. Before the upper and lower cylinder blocks are disassembled, it is completely possible to 100% guarantee that the aperture and roundness are qualified. However, after the upper and lower cylinder blocks are disassembled and reassembled according to the torque in the drawing, the roundness of the crankshaft hole decreases very seriously, that is, the crankshaft hole will be deformed. There is an error between the roundness of the crankshaft hole before and after the upper and lower cylinder blocks are removed from the cover. Therefore, reducing the crankshaft hole roundness error after the cylinder block assembly is removed and reassembled has become a difficult problem to solve.

[0046] In order to overcome the above-mentioned defects, this embodiment increases the protrusion amount of the lower cylinder crankshaft hole based on the target temperature after determining the target torque parameter and the target temperature, and increases the protrusion amount of the lower cylinder crankshaft hole based on the target torque parameter, thereby reducing the roundness error of the crankshaft hole after the cylinder assembly is disassembled and reassembled through the target torque parameter and the target temperature.

[0047] It should be noted that after the upper and lower cylinder blocks are reassembled, the diameter of the crankshaft hole of the reassembled upper cylinder block will be smaller than the diameter of the upper cylinder block crankshaft hole before reassembly, and the diameter of the crankshaft hole of the reassembled lower cylinder block will be larger than the diameter of the crankshaft hole of the reassembled lower cylinder block before reassembly. Therefore, based on the principle of thermal expansion and contraction, the amount of expansion of the lower cylinder block crankshaft hole will be reduced during reassembly by increasing the target temperature. That is, the diameter of the lower cylinder block crankshaft hole will be reduced. The target torque parameter can be used to increase the amount of expansion of the lower cylinder block crankshaft hole, that is, to increase the diameter of the lower cylinder block crankshaft hole.

[0048] It should be noted that when the upper and lower cylinder blocks are reassembled by bolts, they will be assembled according to the torque requirements for engine assembly on the product drawing, and then the crankshaft hole will be bored and reamed by a boring tool with a guide bar. The diameter of the crankshaft hole before and after the machining allowance is removed is different, and the rigidity is also different. Under the premise of the same crankshaft hole deformation, the bolt tightening torque required before the crankshaft hole machining is greater than that after machining. Therefore, after increasing the bolt torque, the target torque parameter is obtained, which increases the outward displacement in the direction of the lower cylinder block joint surface, so that the hole in this direction has less removal allowance, thereby compensating for part of the outward displacement after the cover is removed and reassembled.

[0049] It should be noted that in actual production, the disassembly and reassembly of the upper and lower cylinder blocks are carried out at room temperature. Utilizing the principle of thermal expansion and contraction of materials, the temperature of the lower cylinder block is made higher than that of the upper cylinder block during assembly, and the crankshaft hole of the lower cylinder block expands in advance to reduce the amount of material removed from the crankshaft hole of the lower cylinder block, thereby reducing the amount of protrusion of the crankshaft hole of the lower cylinder block after removal of the cover and reassembly, thereby achieving the purpose of reducing the roundness error of the crankshaft hole and compensating for the insufficient protrusion of the arc part when increasing the bolt torque and increasing the assembly.

[0050] It is understandable that the temperatures of the upper cylinder and the lower cylinder need to be determined separately. The temperature of the upper cylinder is determined first. Since there is a temperature difference between the upper and lower cylinders, the temperature of the lower cylinder is determined based on the temperature of the upper cylinder. The target temperature includes both the temperature of the upper cylinder and the temperature of the lower cylinder.

[0051] Step S20: increasing the outward displacement of the lower cylinder crankshaft hole based on the target temperature.

[0052] It should be noted that the outward displacement of the lower cylinder crankshaft hole is increased by the target temperature, that is, the lower cylinder is heated by the target temperature. According to the principle of thermal expansion and contraction, heating the lower cylinder will cause the lower cylinder to expand, thereby increasing the outward displacement of the lower cylinder crankshaft hole.

[0053] It can be understood that the assembly of the upper and lower cylinder blocks is carried out at room temperature, and the target temperature will be higher than room temperature. Therefore, due to the principle of thermal expansion and contraction, the crankshaft hole of the lower cylinder block will shrink inward at room temperature, which reduces the outward displacement of the crankshaft hole of the lower cylinder block.

[0054] It can be understood that the crankshaft hole is divided into an upper cylinder crankshaft hole and a lower cylinder crankshaft hole, and the upper cylinder crankshaft hole and the lower cylinder crankshaft hole are both semicircular, which are combined to form a complete crankshaft hole.

[0055] It should be noted that the outward extension of the lower cylinder crankshaft hole can be the length extending outward from both ends of the lower cylinder crankshaft hole, that is, the increased diameter part of the lower cylinder crankshaft hole after reorganization based on the diameter of the lower cylinder crankshaft hole before reorganization.

[0056] Step S30: increasing the outward displacement of the lower cylinder crankshaft hole based on the target torque parameter.

[0057] It is understandable that due to the principle of thermal expansion and contraction, when the upper and lower cylinder blocks are assembled at room temperature after the lower cylinder block is heated, the diameter of the crankshaft hole of the lower cylinder block after reassembly will be smaller than the diameter of the crankshaft hole of the lower cylinder block before reassembly. Therefore, it is necessary to increase the tightening torque of the bolts, thereby increasing the diameter of the crankshaft hole of the lower cylinder block after reassembly, that is, increasing the protrusion amount of the crankshaft hole of the lower cylinder block.

[0058] It should be noted that the target torque parameter is an appropriate increase in the torque based on the assembly torque required by the product drawing. The optimal torque, i.e. the target torque, can be selected based on the test deformation.

[0059] This embodiment determines a target torque parameter and a target temperature; increases the amount of protrusion of the lower cylinder crankshaft hole based on the target temperature; and increases the amount of protrusion of the lower cylinder crankshaft hole based on the target torque parameter. By increasing the amount of protrusion of the lower cylinder crankshaft hole based on the target torque parameter and the target temperature, the present invention prevents deformation of the reassembled portion of the upper and lower cylinder crankshaft holes after disassembly and reassembly.

[0060] Reference Figure 3 , Figure 3 This is a flow chart of the second embodiment of the crankshaft hole adjustment method of the present invention, based on the above Figure 2 The first embodiment shown provides a second embodiment of the crankshaft hole adjustment method of the present invention.

[0061] In the second embodiment, after step 20, the method further includes:

[0062] Step S201: maintaining the crankshaft hole temperature of the upper cylinder constant according to the target temperature.

[0063] It is understandable that before the upper and lower cylinders are reassembled, the upper and lower cylinders need to be assembled with temperature control. Temperature control equipment can be used to control the upper and lower cylinders separately. For example, the temperature of the upper cylinder is controlled at 22℃+4 / -6℃, and the temperature of the lower cylinder is: greater than or equal to 10℃ than the temperature of the upper cylinder.

[0064] It should be noted that two constant temperature air conditioning devices can be used to perform constant temperature control on the upper cylinder body and the lower cylinder body respectively.

[0065] It is understandable that the upper cylinder temperature can be controlled at 22°C + 4 / -6°C and the lower cylinder temperature can be set to be greater than or equal to 10°C higher than the upper cylinder temperature according to different seasons and ambient temperature changes.

[0066] Furthermore, in order to reduce the crankshaft hole error, the target temperature includes a first target temperature and a second target temperature, the first target temperature is higher than the second target temperature, the first target temperature is used to increase the outward displacement of the lower cylinder crankshaft hole, and the second target temperature is used to keep the crankshaft hole temperature of the upper cylinder constant.

[0067] It should be noted that when the thermostatic parts of the upper and lower cylinders are taken out and assembled, the assembly should be completed within 90 seconds as much as possible. If unqualified parts are tightened, the upper and lower cylinders need to be re-assembled after thermostatic assembly.

[0068] This embodiment maintains the crankshaft hole temperature of the upper cylinder constant according to the target temperature, and can regulate the temperature of the lower cylinder by the temperature difference between the upper and lower cylinders, thereby reducing the crankshaft hole roundness error and preventing deformation of the crankshaft hole when the upper and lower cylinders are assembled at room temperature.

[0069] Reference Figure 4 , Figure 4 This is a flow chart of the third embodiment of the crankshaft hole adjustment method of the present invention, based on the above Figure 2 The first embodiment shown here provides a third embodiment of the crankshaft hole adjustment method of the present invention.

[0070] In the third embodiment, the step S10 further includes:

[0071] Step S101: determining target torque parameters according to assembly torque parameters.

[0072] It can be understood that the assembly torque parameter is the basic torque parameter required by the product drawing, and the target torque parameter is determined by appropriately increasing the assembly torque parameter.

[0073] It can be understood that the assembly torque parameter is increased according to the torque parameter range, and the optimal target torque parameter is determined through continuous testing and based on the deformation of the crankshaft hole after the test.

[0074] It should be noted that after the target torque parameters are determined, the bolts will reassemble the upper cylinder body and the lower cylinder body according to the target torque parameters.

[0075] Furthermore, in order to reduce the roundness error of the crankshaft hole, step S101 in this embodiment may include:

[0076] The target torque parameter is determined according to the assembly torque parameter and the torque parameter range.

[0077] It should be noted that the assembly torque parameter and the torque parameter range determine that the target torque parameter is the torque tightening torque, that is, the machining assembly torque = product assembly torque + 5 to 10 N.m, and 5 to 10 N.m is the torque parameter range.

[0078] It should be noted that the torque parameter range can be verified through experiments to obtain the optimal torque parameter range, and the torque with the smallest crankshaft hole roundness is selected as the optimal torque for curing.

[0079] Furthermore, in order to reduce the roundness error of the crankshaft hole, step S101 in this embodiment further includes:

[0080] The target torque parameter is determined according to the assembly torque parameter and the angle parameter range.

[0081] It is understandable that determining the target torque parameter based on the assembly torque parameter and the angle parameter range is another method for determining the target torque parameter. This embodiment does not limit this, and the user can select an appropriate method for determining the target torque parameter according to specific needs.

[0082] It should be noted that the torque tightening method can also be machining assembly torque = product assembly torque + 10° to 20°, where 10° to 20° is the angle parameter range.

[0083] It should be noted that the specific value of the angle parameter range can be verified through experiments to obtain the optimal angle parameter range, and the angle with the smallest crankshaft hole roundness is selected as the optimal angle parameter for curing.

[0084] Step S102: determining a target temperature according to the ambient temperature and the temperature difference between the upper cylinder and the lower cylinder.

[0085] It is understandable that, since the environment or seasons are changing, it is necessary to first determine the ambient temperature and then determine the target temperature based on the ambient temperature and the temperature difference between the upper and lower cylinders.

[0086] It should be noted that, since the lower cylinder needs to be heated, there will be a temperature difference between the lower cylinder and the upper cylinder, and the temperature difference range can be set according to user needs.

[0087] Furthermore, in order to compensate for the insufficient amount of partial outward displacement of the crankshaft hole roundness when increasing the bolt torque to increase the assembly, step S102 of this embodiment may include:

[0088] Determine the target temperature of the upper cylinder according to the ambient temperature;

[0089] The target temperature of the lower cylinder is determined according to the temperature difference between the upper cylinder and the lower cylinder and the target temperature of the upper cylinder.

[0090] It should be noted that the temperature of the upper cylinder can be set within the range of 22℃+4 / -6℃ according to the seasons and changes in ambient temperature. For example, the temperature can be set to 25℃ in summer and 17℃ in winter.

[0091] It is understandable that the temperature difference between the upper and lower cylinders needs to be determined in advance, which is set by the user. For example, the temperature of the lower cylinder is set 10°C higher than the temperature of the upper cylinder. For example, when the temperature of the upper cylinder is set to 25°C in summer, the temperature of the lower cylinder is set to 35°C. When the temperature of the upper cylinder is set to 17°C in winter, the temperature of the lower cylinder is set to 27°C.

[0092] This embodiment determines a target torque parameter based on the assembly torque parameter and a target temperature based on the ambient temperature and the temperature difference between the upper and lower cylinder blocks. By determining the target torque parameter and target temperature, this embodiment adjusts the lower cylinder crankshaft bore based on the target torque parameter and target temperature, thereby increasing the amount of protrusion of the lower cylinder crankshaft bore and preventing deformation of the crankshaft bore after the upper and lower cylinder blocks are reassembled.

[0093] In addition, an embodiment of the present invention further provides a storage medium, on which a crankshaft hole adjustment program is stored. When the crankshaft hole adjustment program is executed by a processor, the crankshaft hole adjustment method described above is implemented.

[0094] In addition, refer to Figure 5 , an embodiment of the present invention further provides a crankshaft hole adjustment device, the crankshaft hole adjustment device comprising: a data determination module 10 and a crankshaft hole enlargement module 20;

[0095] The data determination module 10 is used to determine the target torque parameter and the target temperature. The crankshaft hole is divided into an upper cylinder crankshaft hole and a lower cylinder crankshaft hole;

[0096] The crankshaft hole enlarging module 20 is used to increase the outward displacement of the lower cylinder crankshaft hole based on the target temperature;

[0097] The crankshaft hole enlarging module 20 is further configured to increase the protrusion amount of the lower cylinder crankshaft hole based on the target torque parameter.

[0098] This embodiment determines a target torque parameter and a target temperature; increases the amount of protrusion of the lower cylinder crankshaft hole based on the target temperature; and increases the amount of protrusion of the lower cylinder crankshaft hole based on the target torque parameter. By increasing the amount of protrusion of the lower cylinder crankshaft hole based on the target torque parameter and the target temperature, the present invention prevents deformation of the reassembled portion of the upper and lower cylinder crankshaft holes after disassembly and reassembly.

[0099] Based on the first embodiment of the crankshaft hole adjustment device of the present invention, a second embodiment of the crankshaft hole adjustment device of the present invention is proposed.

[0100] In this embodiment, the crankshaft hole enlarging module 20 is used to maintain a constant temperature of the crankshaft hole of the upper cylinder according to the target temperature.

[0101] Furthermore, the crankshaft hole enlargement module 20 is also used for the target temperature including a first target temperature and a second target temperature, the first target temperature is higher than the second target temperature, the first target temperature is used to increase the outward displacement of the crankshaft hole of the lower cylinder, and the second target temperature is used to keep the crankshaft hole temperature of the upper cylinder constant.

[0102] Furthermore, the crankshaft hole enlarging module 20 is also used to determine the target torque parameter according to the assembly torque parameter.

[0103] Furthermore, the crankshaft hole enlarging module 20 is further configured to determine a target temperature according to the ambient temperature and the temperature difference between the upper cylinder block and the lower cylinder block.

[0104] Furthermore, the crankshaft hole enlarging module 20 is further configured to determine a target torque parameter according to the assembly torque parameter and the torque parameter range.

[0105] Furthermore, the crankshaft hole enlarging module 20 is further configured to determine a target torque parameter according to an assembly torque parameter and a rotation angle parameter range.

[0106] Furthermore, the crankshaft hole enlarging module 20 is also used to determine the target temperature of the upper cylinder according to the ambient temperature.

[0107] Furthermore, the crankshaft hole enlarging module 20 is further configured to determine a target temperature of the lower cylinder according to a temperature difference between the upper cylinder and the lower cylinder and the target temperature of the upper cylinder.

[0108] Other embodiments or specific implementations of the crankshaft hole adjustment device of the present invention can refer to the above-mentioned method embodiments and will not be repeated here.

[0109] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or system. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or system comprising the element.

[0110] The serial numbers of the above embodiments of the present invention are for description only and do not represent the advantages or disadvantages of the embodiments.

[0111] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, or of course by hardware, but in many cases the former is a better embodiment. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as a read-only memory image (ROM) / random access memory (RAM), a magnetic disk, or an optical disk), and includes a number of instructions for enabling a terminal device (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present invention.

[0112] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A crankshaft hole adjustment method, characterized in that: The crankshaft hole includes an upper cylinder crankshaft hole and a lower cylinder crankshaft hole, and the crankshaft hole adjustment method includes the following steps: Determine target torque parameters and target temperature; increasing the outward displacement of the crankshaft hole of the lower cylinder block based on the target temperature; increasing the outward displacement of the lower cylinder crankshaft hole based on the target torque parameter; After the step of increasing the outward displacement of the lower cylinder crankshaft hole based on the target temperature, the method further includes: maintaining a constant crankshaft bore temperature of the upper cylinder block according to the target temperature; The target temperature includes a first target temperature and a second target temperature, the first target temperature is higher than the second target temperature, the first target temperature is used to increase the outward displacement of the lower cylinder crankshaft hole, and the second target temperature is used to keep the crankshaft hole temperature of the upper cylinder constant.

2. The crankshaft hole adjustment method according to claim 1, wherein: The step of determining the target torque parameter and the target temperature includes: Determine target torque parameters according to assembly torque parameters; The target temperature is determined based on the ambient temperature and the temperature difference between the upper and lower cylinders.

3. The crankshaft hole adjustment method according to claim 2, wherein: The step of determining the target torque parameter according to the assembly torque parameter includes: The target torque parameter is determined according to the assembly torque parameter and the torque parameter range.

4. The crankshaft hole adjustment method according to claim 2, wherein: The step of determining the target torque parameter according to the assembly torque parameter further includes: The target torque parameter is determined according to the assembly torque parameter and the angle parameter range.

5. The crankshaft hole adjustment method according to claim 2, wherein: The step of determining the target temperature according to the ambient temperature and the temperature difference between the upper cylinder and the lower cylinder comprises: Determine the target temperature of the upper cylinder according to the ambient temperature; The target temperature of the lower cylinder is determined according to the temperature difference between the upper cylinder and the lower cylinder and the target temperature of the upper cylinder.

6. A crankshaft hole adjustment device, characterized in that: The crankshaft hole adjustment device includes: a memory, a processor, and a crankshaft hole adjustment program stored in the memory and executable on the processor. When the crankshaft hole adjustment program is executed by the processor, the steps of the crankshaft hole adjustment method according to any one of claims 1 to 5 are implemented.

7. A storage medium, characterized in that: The storage medium stores a crankshaft hole adjustment program, which, when executed by a processor, implements the steps of the crankshaft hole adjustment method according to any one of claims 1 to 5.

8. A crankshaft hole adjustment device, characterized in that: The crankshaft hole adjustment device includes: a data determination module and a crankshaft hole enlargement module; The data determination module is used to determine the target torque parameter and the target temperature. The crankshaft hole is divided into an upper cylinder crankshaft hole and a lower cylinder crankshaft hole; The crankshaft hole enlarging module is used to increase the outward displacement of the lower cylinder crankshaft hole based on the target temperature; The crankshaft hole enlarging module is further configured to increase the outward displacement of the lower cylinder crankshaft hole based on the target torque parameter; The crankshaft hole adjustment device is also used to maintain the crankshaft hole temperature of the upper cylinder constant according to the target temperature; the target temperature includes a first target temperature and a second target temperature, the first target temperature is higher than the second target temperature, the first target temperature is used to increase the outward displacement of the crankshaft hole of the lower cylinder, and the second target temperature is used to maintain the crankshaft hole temperature of the upper cylinder constant.

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