Calculation method for abrasion loss between engine air valve and valve seat and related device

Abstract

The invention discloses a method for calculating the abrasion loss between an engine air valve and a valve seat and a related device, and relates to the technical field of air valve abrasion quantification.The method comprises the steps that an impact abrasion model is established according to the influence of the impact angle when an exhaust valve is seated; a sliding wear model is established based on an Archard wear theory; then respectively calling an impact wear model and a sliding wear model, and calculating to obtain a normal impact wear amount, an impact sliding wear amount and a sliding wear amount; and calculating the total abrasion loss between the exhaust valve and the valve seat. According to the scheme, various kinds of abrasion between the exhaust valve and the valve seat are fully considered, for example, impact abrasion is specifically differentiated into normal impact abrasion and tangential impact sliding abrasion, sliding abrasion generated after the air valve is closed is further calculated, and compared with a traditional scheme only considering normal impact abrasion, the method has the advantages that the cost is reduced, and the working efficiency is improved. The calculation result about the abrasion loss is more accurate, and the scheme better conforms to the actual situation.

Description

Technical Field

[0001] The present application relates to the technical field of valve wear quantification, and in particular to a method for calculating the amount of wear between an engine valve and a valve seat and a related device. Background Art

[0002] The exhaust valve repeatedly impacts the valve seat during the operation of the engine. During the closing period, it contacts the valve seat due to the pressure of the gas in the cylinder, and is subjected to large mechanical and thermal loads. At the same time, the contact lubrication conditions between the valve and the valve seat are poor. In recent years, the degree of diesel engine strengthening has been continuously improved, and the emission requirements have been upgraded. The working environment of the valve and the valve seat has become more severe, and wear is prone to occur between the valve and the valve seat, which causes the valve to sink and the valve sealing performance to decrease, seriously affecting the working performance of the diesel engine. Therefore, it is crucial to establish an accurate wear model of the exhaust valve and the valve seat for the research and development of diesel engines and accurately calculate the amount of valve wear.

[0003] According to the dynamic analysis of the exhaust valve, when the valve is closed, it is affected by the valve spring force, and the valve impacts the valve seat at a certain speed, and the seating speed is usually between 0.2m / s-0.5m / s. When the material surface is subjected to high-speed instantaneous impact load, it will peel off, cut or plastically deform, which will lead to material loss and change of surface morphology. In addition to impact wear, when the valve is closed, it is affected by the gas pressure in the cylinder, and a large contact force will be generated between the valve and the valve seat, causing deformation of the contact between the valve and the valve seat, thereby generating sliding wear. In other words, from a microscopic point of view, the fatigue wear of the valve is the combined effect of the two mechanisms of impact wear and sliding wear under periodic alternating loads, and is the macroscopic manifestation of plastic deformation and microcracks on the valve surface. Therefore, accurately quantifying the wear amount when the valve is seated and the wear amount when the valve is closed is the prerequisite for accurately calculating the total wear amount of the exhaust valve. Summary of the invention

[0004] The purpose of this application is to provide a method and a related device for calculating the amount of wear between an engine valve and a valve seat, which can accurately calculate the amount of wear between an engine valve and a valve seat.

[0005] To achieve the above objectives, this application provides the following solutions:

[0006] In a first aspect, the present application provides a method for calculating the wear amount between an engine valve and a valve seat, comprising the following steps:

[0007] According to the influence of the impact angle when the exhaust valve is seated, an impact wear model is established; the impact wear model includes the normal impact wear caused by the impact normal force and the sliding wear caused by the impact tangential force.

[0008] Based on Archard wear theory, a sliding wear model is established; in the sliding wear model, the sliding wear amount is proportional to the sliding distance and the normal load, respectively; the sliding wear amount is inversely proportional to the hardness of the softer material.

[0009] According to the impact force, impact times and hardness of the softer material when the exhaust valve is seated, the impact wear model is called to calculate the normal impact wear and impact sliding wear.

[0010] According to the normal load, sliding distance and hardness of the softer material when the exhaust valve is closed, the sliding wear model is called to calculate the sliding wear amount.

[0011] The total wear between the exhaust valve and the valve seat is calculated based on the normal impact wear, impact sliding wear and sliding wear.

[0012] Optionally, according to the impact force, impact times and hardness of the softer material when the exhaust valve is seated, the impact wear model is called to calculate the normal impact wear amount and the impact sliding wear amount, which specifically includes the following steps:

[0013] According to the impact angle when the exhaust valve is seated, the impact force when the exhaust valve is seated is divided into normal impact force and tangential impact force.

[0014] Based on the normal impact force and the number of impacts, the impact wear model is called to calculate the normal impact wear amount.

[0015] Based on the tangential impact force, number of impacts and hardness of the softer material, the impact wear model is called to calculate the impact sliding wear amount.

[0016] Alternatively, the normal impact wear amount is calculated according to the following formula:

[0017] W 1 =KNF n nZLS .

[0018] Among them, W 1 is the normal impact wear, K is the normal impact wear coefficient, N is the number of impacts, F n is the normal impact force, n ZLS is the normal impact wear index.

[0019] Alternatively, the impact sliding wear amount is calculated according to the following formula:

[0020]

[0021] Among them, W 2 is the impact sliding wear amount, k is the impact sliding wear coefficient, N is the number of impacts, x is the impact sliding distance, F t is the tangential impact force, H is the hardness of the softer material, mZLS is the tangential impact slip index.

[0022] Alternatively, the sliding wear amount is calculated according to the following formula:

[0023]

[0024] Among them, W 3 is the sliding wear amount, p is the probability of generating abrasive particles in the micro-convex body, F is the normal load, l is the sliding distance, and H is the hardness of the softer material.

[0025] Optionally, it also includes:

[0026] Based on the effect of temperature on the hardness of the metal material and the current temperature, the hardness of the softer material at the current temperature is determined.

[0027] Optionally, the hardness of the softer material at the current temperature is determined according to the following formula:

[0028] H(T)=H 0 ·e -β·T .

[0029] Where H(T) is the hardness of the softer material at the current temperature, T is the current temperature, and H 0 is the hardness of the softer material at room temperature, e is the impact energy, and β is a constant related to the properties of the softer material.

[0030] In a second aspect, the present application provides a computer device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the method for calculating the amount of wear between an engine valve and a valve seat as described above.

[0031] In a third aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method for calculating the amount of wear between an engine valve and a valve seat as described above.

[0032] In a fourth aspect, the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the steps of the method for calculating the amount of wear between an engine valve and a valve seat as described above.

[0033] According to the specific embodiments provided in this application, this application discloses the following technical effects:

[0034] The present application provides a method and a related device for calculating the amount of wear between an engine valve and a valve seat. In the method, an impact wear model is established according to the influence of the impact angle when the exhaust valve is seated; and a sliding wear model is established based on Archard wear theory; then the impact wear model and the sliding wear model are respectively called to calculate the normal impact wear, impact sliding wear and sliding wear; according to the normal impact wear, impact sliding wear and sliding wear, the total wear between the exhaust valve and the valve seat is calculated. The above scheme of the present application fully considers various wear between the exhaust valve and the valve seat, such as specifically differentiating the impact wear into normal impact wear and tangential impact sliding wear. Compared with the traditional scheme that only considers normal impact wear, the calculation result of the impact wear amount of the present application is more accurate and more in line with the actual situation; at the same time, it also considers that when the valve is closed, it is affected by the gas pressure in the cylinder, and a large contact force is generated between the valve and the valve seat, resulting in deformation of the valve and the valve seat, thereby generating sliding wear, so that the total wear amount is more in line with the actual result, providing a basis for the improvement and development of diesel engines. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 A flow chart of a method for calculating the amount of wear between an engine valve and a valve seat provided in one embodiment of the present application.

[0037] Figure 2 A schematic diagram of the seating of a valve and a valve seat in a method for calculating the amount of wear between an engine valve and a valve seat provided in one embodiment of the present application.

[0038] Figure 3 A schematic diagram of the impact angle between a valve and a valve seat in a method for calculating the wear amount between a valve and a valve seat of an engine provided in one embodiment of the present application.

[0039] Figure 4 A schematic diagram of wear caused by friction between two materials in a method for calculating the amount of wear between an engine valve and a valve seat provided in one embodiment of the present application.

[0040] Figure 5 A basic principle diagram of the Archard model in a method for calculating the wear between an engine valve and a valve seat provided in one embodiment of the present application.

[0041] Figure 6This is a flow chart of step A3 in a method for calculating the amount of wear between an engine valve and a valve seat provided in one embodiment of the present application.

[0042] Figure 7 A schematic diagram of coating the surface of a valve in a method for calculating the amount of wear between an engine valve and a valve seat provided in one embodiment of the present application.

[0043] Figure 8 A schematic diagram of the structure of a computer device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0045] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0046] In an exemplary embodiment, Figure 1 The flowchart shown in the figure provides a method for calculating the wear amount between the engine valve and the valve seat, comprising the following steps:

[0047] A1. According to the influence of the impact angle when the exhaust valve is seated, an impact wear model is established; the impact wear model includes the normal impact wear caused by the impact normal force and the sliding wear caused by the impact tangential force.

[0048] During the diesel engine valve seating process, wear and tear occurs due to single or multiple impacts of the valve. The impact of the diesel engine valve closing will cause deformation, dents, indentations and cracks on the valve and valve seat surface. The valve repeatedly impacts the valve seat during the operation of the diesel engine, which will gradually increase the degree of wear and fatigue cracks on the valve and valve seat surface. At the same time, Figure 2 As shown in the figure, since the contact between the air valve and the valve seat is a conical surface contact, a force will be generated between the air valve and the valve seat in the direction of the conical surface, which will cause the material at the outlet of the impact pit to be extruded. Due to the high working environment temperature of the exhaust valve, the hardness and toughness of the material decrease. The material with lower hardness is more susceptible to impact and wear, while the material with higher toughness may produce plastic deformation under impact and is not easy to crack.

[0049] Most of the existing impact wear models are inspired by the erosion wear model, which believes that the wear amount is related to the impact velocity or impact energy. For example, Wellinger and Breckel studied the wear amount of different metal materials under the impact of spherical steel balls and proposed a semi-empirical relationship as shown in formula (1):

[0050]

[0051] Where W is the wear amount, mm 3 ; K is the impact wear coefficient; N is the number of impact cycles; V is the impact velocity; n wellinger It is the impact wear velocity index in the method proposed by Wellinger.

[0052] Fricke and Allen used a hammer impact wear device to study the impact wear of different types of steel and believed that the wear amount is related to the impact energy, as shown in formula (2):

[0053]

[0054] Among them, n Fricke is the impact wear velocity index in the method proposed by Fricke, e is the impact energy, and the calculation method is shown in formula (3):

[0055]

[0056] Among them, M is the effective mass and V is the impact velocity.

[0057] However, the erosion wear theory is applicable to the random collision of small solid particles with objects, and the scope of action is large. But for the exhaust valve of a diesel engine, when the valve is seated, the valve cone surface collides with the inclined surface on the valve seat, resulting in a certain angle between the impact direction and the target surface, such as Figure 3 As shown, compared with the normal impact angle, there will be a tangential force parallel to the target surface. Therefore, when establishing the impact wear model of the valve and the valve seat, the application takes into account the influence of the impact angle, and divides the impact wear of the valve into two parts. The valve impact force is divided into two parts: normal force and tangential force. That is, the normal component and the component along the tangential direction of the inclined plane are calculated separately. The calculation model is shown in formula (4):

[0058]

[0059] Among them, W 1 is the normal impact wear, K is the normal impact wear coefficient, N is the number of impacts, F n is the normal impact force, n ZLS is the normal impact wear index; W 2is the impact sliding wear amount, k is the impact sliding wear coefficient, x is the impact sliding distance, F t is the tangential impact force, H is the hardness of the softer material, m ZLS is the tangential impact slip index.

[0060] Mohanad Zalzalah and Roger Lewis conducted a large number of impact tests on austenitic steel and medium carbon steel at different angles to verify the accuracy of the above model. The impact wear coefficient and related index in the impact wear model established in this application use the data from them for the calculation of valve impact wear. Specifically, the normal impact wear coefficient K = 1.85×10 -9 , impact sliding wear coefficient k = 1.45 × 10 -7 , normal impact wear index n ZLS =0.816, tangential impact slip index m ZLS =1.850.

[0061] A2. Based on Archard wear theory, a sliding wear model is established; in the sliding wear model, the sliding wear amount is proportional to the sliding distance and the normal load respectively; the sliding wear amount is inversely proportional to the hardness of the softer material.

[0062] Sliding wear on the contact surface between the valve and the valve seat is a common form of friction wear, that is, under a certain load, the contact surface material gradually wears away due to the relative motion of the two objects in contact, such as Figure 4 The Archard wear theory proposed by British engineers Duncan Dowson and John Archard is the most classic theory in the study of sliding wear and is widely used. In this embodiment, the sliding wear amount of the gas valve and the valve seat is calculated based on this wear model.

[0063] The basic principle of Archard model is as follows Figure 5 As shown in the figure, the real material surface has roughness. When the two surfaces come into contact under a certain load, the micro-convex bodies on the material surface contact and bear the load. There is a difference in the hardness of the two materials that produce friction. The micro-convex bodies on the surface of the softer material will produce adhesion points with the micro-convex bodies on the surface of the harder material. Assume that the contact area of ​​each adhesion node is πa 2 , the friction normal load F is borne by n identical micro-convex bodies with a radius of a.

[0064] When the material undergoes plastic deformation, the normal load F and the yield limit σ of the softer material y , the relationship between:

[0065] F=σ y πa 2 n(5)

[0066] When relative sliding occurs between two materials generating friction, assuming that the wear debris generated by each micro-convex body during sliding is hemispherical, its volume is The total wear amount per unit sliding distance can be calculated by formula (6):

[0067]

[0068] From equation (5) and equation (6), we can get the following equation (7):

[0069]

[0070] Formula (7) assumes that each micro-convex body will produce an abrasive particle due to sliding shear when in contact, so the probability of producing abrasive particles in the micro-convex body needs to be considered, and the probability number is set to p. At the same time, the sliding distance l, in mm, also needs to be considered. The final expression of the sliding wear amount of the contact surface is shown in formula (8):

[0071]

[0072] For general elastic materials, the material yield limit σ y =H / 3, H is the Brinell hardness, wear amount (mm 3 ) The calculation formula can be changed to formula (9):

[0073]

[0074] According to the Archard wear calculation formula, the sliding wear of the material is proportional to the sliding distance l and the normal load F; the sliding wear is inversely proportional to the hardness H of the softer material.

[0075] In addition, the effect of temperature on the hardness of metal materials must also be considered. The relationship between the hardness of metal materials and temperature:

[0076] H(T)=H 0 ·e -β·T (10)

[0077] Where: H(T) is the hardness of the softer material at the current temperature, T is the current temperature, H 0 is the hardness of the softer material at room temperature, e is the impact energy, and β is a constant related to the properties of the softer material. As the temperature rises, the surface hardness of the metal material decreases, thereby increasing wear.

[0078] A3. According to the impact force, impact times and hardness of the softer material when the exhaust valve is seated, the impact wear model is called to calculate the normal impact wear and impact sliding wear. Figure 6 In the flowchart shown, step A3 specifically includes the following steps:

[0079] A31. According to the impact angle when the exhaust valve is seated, the impact force when the exhaust valve is seated is divided into normal impact force and tangential impact force.

[0080] A32. Based on the normal impact force and the number of impacts, the impact wear model is called to calculate the normal impact wear amount.

[0081] A33. Based on the tangential impact force, number of impacts and hardness of the softer material, the impact wear model is called to calculate the impact sliding wear amount.

[0082] In this embodiment, the wear amount between the air valve and the valve seat after N impacts is considered, and the number of impacts N here adopts the life of the air valve generally used in relevant literature as 18720000.

[0083] According to the impact force of the valve seat when the gas valve falls, the normal impact force and the tangential impact force are calculated, as shown in Table 1:

[0084] Table 1 Valve Seat Impact Force

[0085] Impact force(N) Valve cone angle (°) Normal impact force(N) Tangential impact force(N) Mechanical shock 6514 45 4606 4606 Thermal-Mechanical Coupling 8238 45 5825 5825

[0086] According to the comparison of the impact wear results calculated from the parameter list shown in Table 2, it can be seen that the impact wear caused by the collision between the valve and the valve seat under the action of pure mechanical load is 16.46mm. 3 , while the impact wear loss under the action of thermal-mechanical coupling is 24.33 mm 3 The temperature increases and the valve impact wear increases by 7.87mm 3 , it can be concluded that the tangential component of valve impact wear is greatly affected by the temperature field.

[0087] Table 2 Valve Seat Impact Wear Calculation List

[0088]

[0089] A4. According to the normal load, sliding distance and hardness of the softer material when the exhaust valve is closed, the sliding wear model is called to calculate the sliding wear amount. The calculation results of the sliding wear amount are shown in Table 3:

[0090] Table 3 Calculation results of sliding wear

[0091] Mechanical load Thermal-Mechanical Coupling <![CDATA[Single-cycle wear amount (mm 3 )]]> <![CDATA[4.05×10 -6 ]]> <![CDATA[1.76×10 -5 ]]> Number of impacts 18720000 18720000 <![CDATA[Total sliding wear amount (mm 3 )]]> 33.03 143.61

[0092] According to the calculation results in Table 3, the sliding loss between the valve and the valve seat under the mechanical load is 33.03 mm. 3 The sliding loss between the valve and the valve seat under the thermal-mechanical coupling is 143.61 mm 3 , the sliding wear of the air valve increases significantly after adding the temperature field.

[0093] A5. According to the normal impact wear, impact sliding wear and sliding wear, the total wear between the exhaust valve and the valve seat is calculated. The total wear of the valve is obtained by adding the impact wear and sliding wear of the valve, as shown in Table 4:

[0094] Table 4 Total wear between exhaust valve and valve seat

[0095] Mechanical load Thermal-Mechanical Coupling Total loss (mm3) 49.49 167.94

[0096] According to the calculation results in Table 4, compared with the mechanical load, the valve wear under the thermal-mechanical coupling after considering the temperature field increases by 239% (118.45 mm 3 ), it can be seen that temperature has a greater impact on valve wear.

[0097] In an exemplary embodiment, a computer device is provided. The computer device may be a server or a terminal. The internal structure diagram thereof may be as follows: Figure 8 As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, the steps of the method for calculating the wear amount between the engine valve and the valve seat mentioned in the above embodiment are implemented.

[0098] Those skilled in the art will understand that Figure 8 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0099] In an exemplary embodiment, a computer-readable storage medium is provided, storing a computer program, and when the computer program is executed by a processor, the steps in the above method embodiments are implemented.

[0100] In an exemplary embodiment, a computer program product is provided, including a computer program, and when the computer program is executed by a processor, the steps in the above method embodiments are implemented.

[0101] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0102] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM may be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).

[0103] The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. The non-relational database may include a distributed database based on blockchain, etc., but is not limited thereto. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but is not limited thereto.

[0104] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0105] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A method for calculating the wear between an engine valve and a valve seat, characterized in that: include: According to the influence of the impact angle when the exhaust valve is seated, an impact wear model is established; the impact wear model includes the normal impact wear caused by the impact normal force and the sliding wear caused by the impact tangential force; Based on Archard wear theory, a sliding wear model is established; in the sliding wear model, the sliding wear amount is proportional to the sliding distance and the normal load respectively; the sliding wear amount is inversely proportional to the hardness of the softer material; According to the impact force, impact times and hardness of the softer material when the exhaust valve is seated, the impact wear model is called to calculate the normal impact wear amount and the impact sliding wear amount; The sliding wear model is called according to the normal load, sliding distance and hardness of the softer material when the exhaust valve is closed to calculate the sliding wear amount; The total wear amount between the exhaust valve and the valve seat is calculated according to the normal impact wear amount, the impact sliding wear amount and the sliding wear amount.

2. The method for calculating the wear amount between the engine valve and the valve seat according to claim 1, characterized in that: According to the impact force, impact times and hardness of the softer material when the exhaust valve is seated, the impact wear model is called to calculate the normal impact wear amount and the impact sliding wear amount, specifically including: According to the impact angle when the exhaust valve is seated, the impact force when the exhaust valve is seated is divided into normal impact force and tangential impact force; Based on the normal impact force and the number of impacts, the impact wear model is called to calculate the normal impact wear amount; Based on the tangential impact force, the number of impacts and the hardness of the softer material, the impact wear model is called to calculate the impact sliding wear amount.

3. The method for calculating the wear amount between the engine valve and the valve seat according to claim 1, characterized in that: The normal impact wear amount is calculated according to the following formula: W1=KNF n nZLS ; Where W1 is the normal impact wear, K is the normal impact wear coefficient, N is the number of impacts, F n is the normal impact force, n ZLS is the normal impact wear index.

4. The method for calculating the wear amount between the engine valve and the valve seat according to claim 1, characterized in that: The impact sliding wear amount is calculated according to the following formula: Where W2 is the impact sliding wear, k is the impact sliding wear coefficient, N is the number of impacts, x is the impact sliding distance, F t is the tangential impact force, H is the hardness of the softer material, m ZLS is the tangential impact slip index.

5. The method for calculating the wear amount between the engine valve and the valve seat according to claim 1, characterized in that: The sliding wear amount is calculated according to the following formula: Among them, W3 is the sliding wear amount, p is the probability of generating abrasive particles in the micro-asperity, F is the normal load, l is the sliding distance, and H is the hardness of the softer material.

6. The method for calculating the wear amount between the engine valve and the valve seat according to any one of claims 4 to 5, characterized in that: Also includes: Based on the effect of temperature on the hardness of the metal material and the current temperature, the hardness of the softer material at the current temperature is determined.

7. The method for calculating the wear amount between the engine valve and the valve seat according to claim 6, characterized in that: Determine the hardness of the softer material at the current temperature according to the following formula: H(T)=H0·e -β·T ; Where H(T) is the hardness of the softer material at the current temperature, T is the current temperature, H0 is the hardness of the softer material at room temperature, e is the impact energy, and β is a constant related to the properties of the softer material.

8. A computer device comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method for calculating the amount of wear between an engine valve and a valve seat as described in any one of claims 1-7.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for calculating the amount of wear between an engine valve and a valve seat according to any one of claims 1 to 7 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the method for calculating the amount of wear between an engine valve and a valve seat according to any one of claims 1 to 7 is implemented.

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