An engine mount durability test equivalent method and system

Abstract

The present invention discloses an engine mount durability test equivalence method and system. The method comprises: obtaining load data of the engine mount under a vehicle durability test condition, the load data including at least the maximum, minimum, and root mean square (RMS) values ​​of the acceleration load of the engine mount in a preset direction; sorting the test conditions in sequence according to preset rules based on the maximum, minimum, and RMS values ​​of the acceleration load of the engine mount in the preset direction, and obtaining a sorted table of the test conditions in the preset direction; obtaining multiple target conditions arranged at preset positions from the sorted table, and determining a target test condition based on the multiple target conditions; and using the target test condition for the durability test of the engine mount. The present invention solves the problem of low efficiency of engine mount durability testing in the prior art.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and in particular to an engine mount durability test equivalent method and system. Background Art

[0002] With the development of society, cars have become commonplace in every household. As a crucial component of the vehicle's powertrain, the engine mount not only withstands the forces and torques from the road and engine, but also mitigates the impact of vibration. To withstand the impact of vibration for extended periods and ensure safe and stable driving, the engine mount must possess sufficient rigidity and durability. The engine mount system must, at a minimum, withstand all dynamic forces and torques acting on the powertrain both internally and externally during driving; and isolate vibrations generated by the road and engine excitation, minimizing damage to the vehicle body and powertrain.

[0003] However, when a vehicle travels on uneven roads, the engine mount is subject to both engine and road vibrations. This prolonged vibration load can cause fatigue damage, directly impacting the vehicle's service life. Therefore, thorough verification of the engine mount's durability is essential during the initial stages of vehicle design.

[0004] In the existing technology, most domestic OEMs basically integrate the durability verification of the engine suspension system into the comprehensive durability verification plan of the whole vehicle. However, the comprehensive durability plan of the whole vehicle has a long cycle and is relatively inefficient when used for engine suspension durability testing. Summary of the Invention

[0005] In view of this, an object of the present invention is to provide an engine mount durability test equivalent method and system, aiming to solve the problem of low efficiency of engine mount durability test in the prior art.

[0006] The embodiment of the present invention is implemented as follows:

[0007] An engine mount durability test equivalent method, the method comprising:

[0008] Obtaining load data of the engine mount under a vehicle durability test condition, the load data including at least a maximum value, a minimum value, and a root mean square value of an acceleration load of the engine mount in a preset direction;

[0009] Sorting the test conditions in sequence according to a preset rule based on the maximum value, minimum value, and root mean square value of the acceleration load of the engine mount in a preset direction, and obtaining a ranking table of the test conditions in the preset direction;

[0010] Acquire multiple target operating conditions arranged at preset positions from the sorting table, and determine a target test operating condition based on the multiple target operating conditions;

[0011] The target test condition is used for the durability test of the engine mount.

[0012] Furthermore, in the above-mentioned engine mount durability test equivalent method, wherein the preset directions include the X direction, Y direction, and Z direction of the engine mount, the step of obtaining load data of the engine mount under the vehicle durability test condition, wherein the load data at least includes the maximum value, minimum value, and root mean square value of the acceleration load of the engine mount in the preset directions, comprises:

[0013] Obtain load data of the engine mount under a vehicle durability test condition, wherein the load data at least includes a maximum value, a minimum value, and a root mean square value of acceleration loads of the engine mount in the X direction, the Y direction, and the Z direction, respectively.

[0014] Furthermore, in the above-mentioned engine mount durability test equivalent method, the step of obtaining a plurality of target operating conditions arranged at preset positions from the sorting table and determining a target test operating condition based on the plurality of target operating conditions includes:

[0015] A plurality of target operating conditions arranged in the X direction, the Y direction, and the Z direction at preset positions are obtained from the sorting table, and a union of target test operating conditions respectively determined by the plurality of target operating conditions is determined as the target test operating condition.

[0016] Furthermore, the engine mount durability test equivalent method further includes, before the step of applying the target test condition to the engine mount durability test:

[0017] Obtaining a power spectral density of the engine mount when tested under the target test condition, and a reference power spectral density of the engine mount when tested under the vehicle durability test condition;

[0018] Determining whether an error between the power spectral density and the reference power spectral density is within a preset error range;

[0019] If so, the step of applying the target test condition to the durability test of the engine mount is performed.

[0020] Furthermore, in the above-mentioned engine mount durability test equivalent method, the step of sequentially sorting the test conditions according to the maximum value, minimum value, and root mean square value of the acceleration load of the engine mount in a preset direction according to a preset rule and obtaining a sorting table of the test conditions in the preset direction includes:

[0021] Sorting the test conditions in descending order according to the maximum value, minimum value, and root mean square value of the acceleration load of the engine mount in the preset direction, and obtaining a ranking table of the test conditions in the preset direction;

[0022] The steps of obtaining a plurality of target operating conditions arranged at preset positions from the sorting table and determining a target test operating condition according to the plurality of target operating conditions include:

[0023] A plurality of target operating conditions with a preset number of digits before arrangement are obtained from the sorting table, and a target test operating condition is determined based on the plurality of target operating conditions.

[0024] Another object of the present invention is to provide an engine mount durability test equivalent system, the system comprising:

[0025] a load data acquisition module, configured to acquire load data of the engine mount under a vehicle durability test condition, the load data including at least a maximum value, a minimum value, and a root mean square value of the acceleration load of the engine mount in a preset direction;

[0026] a ranking table acquisition module, configured to sequentially sort the test conditions according to a preset rule based on the maximum value, minimum value, and root mean square value of the acceleration load of the engine mount in a preset direction, and obtain a ranking table of the test conditions in the preset direction;

[0027] a first determining module, configured to obtain a plurality of target operating conditions arranged at preset positions from the sorting table, and determine a target test operating condition based on the plurality of target operating conditions;

[0028] A test module is used to apply the target test condition to the durability test of the engine mount.

[0029] Furthermore, in the above engine mount durability test equivalent system, the preset directions include the X direction, Y direction, and Z direction of the engine mount, and the load data acquisition module is specifically configured to:

[0030] Obtain load data of the engine mount under a vehicle durability test condition, wherein the load data at least includes a maximum value, a minimum value, and a root mean square value of acceleration loads of the engine mount in the X direction, the Y direction, and the Z direction, respectively.

[0031] Furthermore, in the above engine mount durability test equivalent system, the first determination module is specifically configured to:

[0032] A plurality of target operating conditions arranged in the X direction, the Y direction, and the Z direction at preset positions are obtained from the sorting table, and a union of target test operating conditions respectively determined by the plurality of target operating conditions is determined as the target test operating condition.

[0033] Furthermore, the engine mount durability test equivalent system further comprises:

[0034] a power spectrum density acquisition module, configured to acquire the power spectrum density of the engine mount when tested under the target test condition, and a reference power spectrum density of the engine mount when tested under the vehicle durability test condition;

[0035] a judging module, configured to judge whether an error between the power spectrum density and the reference power spectrum density is within a preset error range;

[0036] The second determining module is configured to use the target test condition for the durability test of the engine mount when it is determined that the error between the power spectrum density and the reference power spectrum density is within a preset error range.

[0037] Furthermore, in the above engine mount durability test equivalent system, the ranking module is specifically configured to:

[0038] Sorting the test conditions in descending order according to the maximum value, minimum value, and root mean square value of the acceleration load of the engine mount in the preset direction, and obtaining a ranking table of the test conditions in the preset direction;

[0039] The first determining module is specifically configured to:

[0040] A plurality of target operating conditions with a preset number of digits before arrangement are obtained from the sorting table, and a target test operating condition is determined based on the plurality of target operating conditions.

[0041] The present invention obtains load data in a whole vehicle durability test condition, and according to the obtained data, sorts a plurality of test conditions by using maximum values, minimum values ​​and root mean square values ​​to obtain a target condition, and then determines a target test condition based on the target condition. When performing an engine mount durability test, the target test condition can be used to replace a large number of test conditions required to implement the engine mount durability test in a whole vehicle durability test, thereby reducing the test conditions and thus reducing the engine mount durability test cycle, thereby improving the efficiency of the engine mount durability test and solving the problem of low durability test efficiency in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is a flow chart of an equivalent method for engine mount durability testing provided in the first embodiment of the present invention;

[0043] Figure 2 This is a flow chart of an equivalent method for engine mount durability testing provided in a second embodiment of the present invention;

[0044] Figure 3 This is a structural block diagram of an engine mount durability test equivalent system provided in the third embodiment of the present invention.

[0045] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0046] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The drawings illustrate several embodiments of the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0047] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed types.

[0049] With the development of society, cars have become commonplace in every household. As a crucial component of the vehicle's powertrain, the engine mount not only withstands the forces and torques from the road and engine but also mitigates the impact of vibration. To withstand the impact of vibration over time and ensure safe and stable driving, the engine mount must possess sufficient rigidity and durability. The engine mount system must, at a minimum, perform the following functions: withstand all dynamic forces and torques acting on the powertrain both internally and externally during driving; and isolate vibrations generated by the road and engine excitation, minimizing damage to the vehicle body and powertrain.

[0050] However, when a vehicle travels on uneven roads, the engine mount is subject to both engine and road vibrations. This prolonged vibration load can cause fatigue damage, directly impacting the vehicle's service life. Therefore, thorough verification of the engine mount's durability is essential during the initial stages of vehicle design.

[0051] In the existing technology, most domestic OEMs basically integrate the durability verification of the engine suspension system into the comprehensive durability verification plan of the whole vehicle. However, the comprehensive durability plan of the whole vehicle has a long cycle and is relatively inefficient when used for engine suspension durability testing.

[0052] The following will describe in detail how to improve the efficiency of engine mount durability testing with reference to specific embodiments and accompanying drawings.

[0053] Example 1

[0054] See also Figure 1 , which shows an equivalent method for engine mount durability testing in the first embodiment of the present invention, and the method includes steps S10 to S13.

[0055] Step S10 , obtaining load data of the engine mount under a vehicle durability test condition, wherein the load data at least includes a maximum value, a minimum value, and a root mean square value of the acceleration load of the engine mount in a preset direction.

[0056] Among them, the whole vehicle durability test conditions are the test conditions of engine durability obtained through the whole vehicle durability test plan, that is, the test conditions in the target specifications of the existing engine suspension durability test. Exemplarily, the test conditions include but are not limited to road strips, bumpy roads, vibrating roads, shift high loops, gravel roads, bumpy roads, 20% slopes, and highways.

[0057] Specifically, the durability of the engine mount depends largely on the load applied during the test. By acquiring load data, we can preliminarily determine the test conditions that play a major role in the engine mount durability test. The root mean square value of the engine mount acceleration can represent the overall severity of the working road surface. The preset directions include the X, Y, and Z directions of the engine mount, and the maximum, minimum, and root mean square values ​​of the acceleration loads of the engine mount in the X, Y, and Z directions are obtained.

[0058] Step S11 , sorting the test conditions in sequence according to a preset rule based on the maximum value, minimum value and root mean square value of the acceleration load of the engine mount in a preset direction, and obtaining a sorting table of the test conditions in the preset direction.

[0059] Among them, the test conditions can be sorted according to the maximum value, minimum value and root mean square value of the acceleration load of the engine mount in the preset direction. For example, according to the maximum value of the acceleration load of the engine mount in the X direction, the test conditions are arranged in order from large to small according to the size of the maximum value; according to the minimum value of the acceleration load of the engine mount in the Y direction, the test conditions are arranged in order from large to small according to the size of the minimum value; and according to the root mean square value of the acceleration load of the engine mount in the Z direction, the test conditions are arranged in order from large to small according to the size of the root mean square value.

[0060] For example, the sorting table may be as shown in Table 1 to Table 3 below:

[0061] Table 1: Ranking of maximum acceleration values ​​in the X direction in various engine mount working conditions:

[0062]

[0063] Table 2: Ranking of minimum X-direction acceleration values ​​in various engine mount operating conditions:

[0064]

[0065] Table 3: Ranking of the root mean square (RMS) acceleration in the X direction in various engine mount operating conditions:

[0066]

[0067] Step S12: acquiring a plurality of target operating conditions arranged at preset positions from the sorting table, and determining a target test operating condition based on the plurality of target operating conditions.

[0068] Correspondingly, according to the sorting situation in the above table, multiple target operating conditions arranged in preset positions in the sorting table can be obtained, for example, the target operating conditions at the top of the maximum value, minimum value and root mean square value in the sorting table are obtained, for example, the target operating conditions corresponding to the top 5 maximum values, minimum values ​​and root mean square values ​​in the sorting table are selected, and the target test conditions of the engine suspension durability test are determined according to the target operating conditions. Specifically, the union of the target operating conditions corresponding to the maximum values, minimum values ​​and root mean square values ​​is used as the target test condition.

[0069] When the selected preset direction is only the X direction, the union of multiple target operating conditions can be directly determined as the target test condition. For example, as shown in Tables 1 to 3, the target test conditions ultimately determined are the road strip road, the first pothole-bump road, the second vibration road, the third vibration road, the gravel road, the shift high loop, and the second pothole-bump road. When multiple preset directions are selected, such as the X, Y, and Z directions, the union of the target operating conditions in different directions can be first obtained, and then the unions obtained in different directions can be further combined to obtain the final target test condition.

[0070] Step S13: Using the target test condition for the durability test of the engine mount.

[0071] Among them, the determined target test conditions are used for the durability test of the engine mount. During the durability test of the engine mount, the engine mount durability is tested through the target test conditions. Compared with the prior art of testing the durability of the engine mount at the same time through the whole vehicle durability test, the requirements of the engine durability mount test can be achieved without going through a large number of test conditions. Moreover, the results of the engine mount durability test can be equivalent to the test results of the engine mount durability tested in the whole vehicle durability test plan.

[0072] In summary, the engine mount durability test equivalent method in the above embodiment of the present invention obtains the load data in the whole vehicle durability test condition, and obtains the target condition by sorting the multiple test conditions using the maximum value, minimum value and root mean square value according to the acquired data, and then determines the target test condition based on the target condition. When performing the engine mount durability test, the target test condition can be used to replace the large number of test conditions required to achieve the engine mount durability test in the whole vehicle durability test, thereby reducing the test conditions and thus reducing the engine mount durability test cycle, thereby improving the efficiency of the engine mount durability test and solving the problem of low durability test efficiency in the prior art.

[0073] Example 2

[0074] See also Figure 2 , which shows an equivalent method for engine mount durability testing in a second embodiment of the present invention, and the method includes steps S20 to S25.

[0075] Step S20 , obtaining load data of the engine mount under a vehicle durability test condition, wherein the load data at least includes a maximum value, a minimum value, and a root mean square value of the acceleration load of the engine mount in a preset direction.

[0076] Step S21 , sorting the test conditions in sequence according to a preset rule based on the maximum value, minimum value and root mean square value of the acceleration load of the engine mount in a preset direction, and obtaining a sorting table of the test conditions in the preset direction.

[0077] Step S22 , obtaining a plurality of target operating conditions arranged at preset positions from the sorting table, and determining a target test operating condition based on the plurality of target operating conditions.

[0078] Step S23 , obtaining the power spectrum density of the engine mount when tested under the target test condition, and the reference power spectrum density of the engine mount when tested under the vehicle durability test condition.

[0079] It can be understood that in order to improve the accuracy of the engine mount durability test, before determining the equivalent scheme of the engine mount relative to the existing durability test, the target test conditions used for the equivalent are verified. Specifically, the power spectrum density of the engine mount when tested under the target test conditions and the reference power spectrum density of the engine mount when tested under the vehicle durability test conditions are obtained. The rationality of the equivalent scheme is determined based on the error value between the reference power spectrum density in the target scheme of the existing specification and the power spectrum density in the equivalent scheme proposed in the present invention.

[0080] In addition, after the verification is completed, the equivalent solution proposed in this application is verified to be equivalent to the existing solution. The target specification test and solution specification test are respectively carried out on the powertrain test bench and the 12-channel four-post test bench on 6 mature prototype vehicles of the same batch. The comparison of the test results is shown in Table 4:

[0081] Table 4

[0082]

[0083] According to the engine mount failure mileage and failure test percentage of the prototype vehicle of the existing scheme specification and the equivalent scheme specification in the above table, it can be seen that the verification effect of the two specifications on the engine mount is equivalent.

[0084] Step S24 , determining whether the error between the power spectrum density and the reference power spectrum density is within a preset error range; if so, executing step S25 .

[0085] Among them, the error range can be set according to actual conditions. On the other hand, the error range can also be set according to industry standards and national standards.

[0086] Step S25: Using the target test condition for the durability test of the engine mount.

[0087] In summary, the engine mount durability test equivalent method in the above embodiment of the present invention obtains load data in the whole vehicle durability test condition, and obtains the target condition by sorting multiple test conditions using the maximum value, minimum value and root mean square value according to the acquired data, and then determines the target test condition based on the target condition. When conducting the engine mount durability test, the target test condition can be used to replace the large number of test conditions required to achieve the engine mount durability test in the whole vehicle durability test, thereby reducing the test conditions and thus reducing the engine mount durability test cycle, thereby improving the efficiency of the engine mount durability test, and verifying the target test condition in the equivalent scheme before determining the equivalent target test condition, thereby solving the low efficiency of the engine mount durability test in the prior art and improving the accuracy of the durability test.

[0088] Example 3

[0089] See also Figure 3 , shown is an engine mount durability test equivalent system provided in a third embodiment of the present invention, the system comprising:

[0090] A load data acquisition module 100 is configured to acquire load data of the engine mount under a vehicle durability test condition, wherein the load data includes at least a maximum value, a minimum value, and a root mean square value of the acceleration load of the engine mount in a preset direction;

[0091] A ranking table acquisition module 200 is configured to sequentially sort the test conditions according to a preset rule based on the maximum value, minimum value, and root mean square value of the acceleration load of the engine mount in a preset direction, and obtain a ranking table of the test conditions in the preset direction;

[0092] A first determination module 300 is configured to obtain a plurality of target operating conditions arranged at preset positions from the sorting table, and determine a target test operating condition based on the plurality of target operating conditions;

[0093] The test module 400 is configured to use the target test condition for the durability test of the engine mount.

[0094] Furthermore, in the above engine mount durability test equivalent system, the preset directions include the X direction, Y direction, and Z direction of the engine mount, and the load data acquisition module is specifically configured to:

[0095] Obtain load data of the engine mount under a vehicle durability test condition, wherein the load data at least includes a maximum value, a minimum value, and a root mean square value of acceleration loads of the engine mount in the X direction, the Y direction, and the Z direction, respectively.

[0096] Furthermore, in the above engine mount durability test equivalent system, the first determination module is specifically configured to:

[0097] A plurality of target operating conditions arranged in the X direction, the Y direction, and the Z direction at preset positions are obtained from the sorting table, and a union of target test operating conditions respectively determined by the plurality of target operating conditions is determined as the target test operating condition.

[0098] Furthermore, the engine mount durability test equivalent system further comprises:

[0099] a power spectrum density acquisition module, configured to acquire the power spectrum density of the engine mount when tested under the target test condition, and a reference power spectrum density of the engine mount when tested under the vehicle durability test condition;

[0100] a judging module, configured to judge whether an error between the power spectrum density and the reference power spectrum density is within a preset error range;

[0101] The second determining module is configured to use the target test condition for the durability test of the engine mount when it is determined that the error between the power spectrum density and the reference power spectrum density is within a preset error range.

[0102] Furthermore, in the above engine mount durability test equivalent system, the ranking module is specifically configured to:

[0103] Sorting the test conditions in descending order according to the maximum value, minimum value, and root mean square value of the acceleration load of the engine mount in the preset direction, and obtaining a ranking table of the test conditions in the preset direction;

[0104] The first determining module is specifically configured to:

[0105] A plurality of target operating conditions with a preset number of digits before arrangement are obtained from the sorting table, and a target test operating condition is determined based on the plurality of target operating conditions.

[0106] The functions or operation steps implemented when the above modules are executed are substantially the same as those in the above method embodiments and will not be repeated here.

[0107] The technical features of the above embodiments can be combined arbitrarily. In order 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.

[0108] Those skilled in the art will appreciate that the logic and / or steps represented in the flowcharts or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, apparatus, or device (e.g., a computer-based system, a system including a processor, or other system that can fetch and execute instructions from an instruction execution system, apparatus, or device), or in conjunction with such instruction execution system, apparatus, or device. For purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by an instruction execution system, apparatus, or device, or in conjunction with such instruction execution system, apparatus, or device.

[0109] More specific examples (a non-exhaustive list) of computer-readable media include the following: an electrical connection with one or more wires (electronic devices), a portable computer disk cartridge (magnetic devices), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disc read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting, or processing it in another suitable manner as necessary, and then storing it in a computer memory.

[0110] It should be understood that various components of the present invention may be implemented using hardware, software, firmware, or a combination thereof. In the aforementioned embodiments, multiple steps or methods may be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one or a combination of the following technologies known in the art may be used: a discrete logic circuit having logic gate circuits for implementing logic functions on data signals, an application-specific integrated circuit having suitable combinational logic gate circuits, a programmable gate array (PGA), a field-programmable gate array (FPGA), etc.

[0111] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0112] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An engine mount durability test equivalent method, characterized in that: The method comprises: Obtaining load data of the engine mount under a vehicle durability test condition, the load data including at least a maximum value, a minimum value, and a root mean square value of an acceleration load of the engine mount in a preset direction; Sorting the test conditions in sequence according to a preset rule based on the maximum value, minimum value, and root mean square value of the acceleration load of the engine mount in a preset direction, and obtaining a ranking table of the test conditions in the preset direction; Acquire multiple target operating conditions arranged at preset positions from the sorting table, and determine a target test operating condition based on the multiple target operating conditions; The target test condition is used for the durability test of the engine mount.

2. The engine mount durability test equivalent method according to claim 1, characterized in that: The preset directions include the X direction, the Y direction, and the Z direction of the engine mount. The step of obtaining load data of the engine mount under the vehicle durability test condition, wherein the load data at least includes a maximum value, a minimum value, and a root mean square value of the acceleration load of the engine mount in the preset directions, comprises: Obtain load data of the engine mount under a vehicle durability test condition, wherein the load data at least includes a maximum value, a minimum value, and a root mean square value of acceleration loads of the engine mount in the X direction, the Y direction, and the Z direction, respectively.

3. The engine mount durability test equivalent method according to claim 2, characterized in that: The step of obtaining a plurality of target operating conditions arranged at preset positions from the sorting table and determining a target test operating condition according to the plurality of target operating conditions includes: A plurality of target operating conditions arranged in the X direction, the Y direction, and the Z direction at preset positions are obtained from the sorting table, and a union of target test operating conditions respectively determined by the plurality of target operating conditions is determined as the target test operating condition.

4. The engine mount durability test equivalent method according to claim 1, characterized in that: Before the step of applying the target test condition to the durability test of the engine mount, the method further includes: Obtaining a power spectral density of the engine mount when tested under the target test condition, and a reference power spectral density of the engine mount when tested under the vehicle durability test condition; Determining whether an error between the power spectral density and the reference power spectral density is within a preset error range; If so, the step of applying the target test condition to the durability test of the engine mount is performed.

5. The engine mount durability test equivalent method according to claim 1, characterized in that: The step of sequentially sorting the test conditions according to a preset rule based on the maximum value, minimum value, and root mean square value of the acceleration load of the engine mount in the preset direction and obtaining a sorting table of the test conditions in the preset direction includes: Sorting the test conditions in descending order according to the maximum value, minimum value, and root mean square value of the acceleration load of the engine mount in the preset direction, and obtaining a ranking table of the test conditions in the preset direction; The steps of obtaining a plurality of target operating conditions arranged at preset positions from the sorting table and determining a target test operating condition according to the plurality of target operating conditions include: A plurality of target operating conditions with a preset number of digits before arrangement are obtained from the sorting table, and a target test operating condition is determined based on the plurality of target operating conditions.

6. An engine mount durability test equivalent system, characterized in that: The system comprises: a load data acquisition module, configured to acquire load data of the engine mount under a vehicle durability test condition, the load data including at least a maximum value, a minimum value, and a root mean square value of the acceleration load of the engine mount in a preset direction; a ranking table acquisition module, configured to sequentially sort the test conditions according to a preset rule based on the maximum value, minimum value, and root mean square value of the acceleration load of the engine mount in a preset direction, and obtain a ranking table of the test conditions in the preset direction; a first determining module, configured to obtain a plurality of target operating conditions arranged at preset positions from the sorting table, and determine a target test operating condition based on the plurality of target operating conditions; A test module is used to apply the target test condition to the durability test of the engine mount.

7. The engine mount durability test equivalent system according to claim 6, characterized in that: The preset directions include the X direction, Y direction, and Z direction of the engine mount, and the load data acquisition module is specifically used to: Obtain load data of the engine mount under a vehicle durability test condition, wherein the load data at least includes a maximum value, a minimum value, and a root mean square value of acceleration loads of the engine mount in the X direction, the Y direction, and the Z direction, respectively.

8. The engine mount durability test equivalent system according to claim 7, characterized in that: The first determining module is specifically configured to: A plurality of target operating conditions arranged in the X direction, the Y direction, and the Z direction at preset positions are obtained from the sorting table, and a union of target test operating conditions respectively determined by the plurality of target operating conditions is determined as the target test operating condition.

9. The engine mount durability test equivalent system according to claim 6, characterized in that: The system further comprises: a power spectrum density acquisition module, configured to acquire the power spectrum density of the engine mount when tested under the target test condition, and a reference power spectrum density of the engine mount when tested under the vehicle durability test condition; a judging module, configured to judge whether an error between the power spectrum density and the reference power spectrum density is within a preset error range; The second determining module is configured to use the target test condition for the durability test of the engine mount when it is determined that the error between the power spectrum density and the reference power spectrum density is within a preset error range.

10. The engine mount durability test equivalent system according to claim 6, characterized in that: The sorting table acquisition module is specifically used for: Sorting the test conditions in descending order according to the maximum value, minimum value, and root mean square value of the acceleration load of the engine mount in the preset direction, and obtaining a ranking table of the test conditions in the preset direction; The first determining module is specifically configured to: A plurality of target operating conditions with a preset number of digits before arrangement are obtained from the sorting table, and a target test operating condition is determined based on the plurality of target operating conditions.

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