Fault identification method and device for engine mounting system

Abstract

The present invention relates to a method and device for identifying engine mount system faults, belonging to the technical field of vehicle fault monitoring. The method comprises: determining the vehicle's current operating condition based on the vehicle's current road profile information; obtaining load information of the engine mount system, the load information including the force value of the suspension cushion, the displacement value of the suspension cushion, and the suspension vibration acceleration value; and performing fault identification on the engine mount system based on the vehicle's current operating condition and the load information. While achieving engine mount system fault identification, the present invention improves the flexibility of the fault identification process and increases the accuracy of fault identification.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle fault monitoring, and in particular to a fault identification method and device for an engine mounting system. Background Art

[0002] The engine mount system is used to reduce and control the transmission of engine vibration and provide support for the engine. Failure of the engine mount can generate loud noise, impacting driving comfort, fuel efficiency, and component life. Therefore, timely identification of engine mount system failures is crucial.

[0003] Existing suspension system fault identification solutions primarily rely on manual analysis of unusual noises and vibrations, which can be time-consuming. Furthermore, the vehicle must be stationary and inspectors must be present during testing, which presents certain limitations. Fault identification solutions that rely on sensor-based information are easily affected by factors such as road conditions, resulting in limited accuracy. Summary of the Invention

[0004] In view of this, it is necessary to provide a method and device for identifying a fault of an engine mount system, so as to solve the problem that the existing mount system fault identification scheme has certain limitations and the identification accuracy is not high enough.

[0005] In order to solve the above problems, the present invention provides a fault identification method for an engine mount system, comprising:

[0006] Determine the vehicle's current operating condition based on the vehicle's current road spectrum information;

[0007] Acquiring load information of the engine mounting system, wherein the load information includes a force value of the mounting pad, a displacement value of the mounting pad, and a mounting vibration acceleration value;

[0008] Fault identification is performed on the engine mount system based on the current operating condition of the vehicle and the load information.

[0009] In one possible implementation, the performing fault identification on the engine mount system based on the current operating condition of the vehicle and the load information includes:

[0010] Determining a first recognition result based on the current operating condition of the vehicle and the force value of the suspension cushion;

[0011] determining a second recognition result based on the displacement value of the suspension cushion and the suspension vibration acceleration value;

[0012] Fault identification is performed on the engine mount system based on the first identification result and the second identification result.

[0013] In one possible implementation, determining the first recognition result based on the current operating condition of the vehicle and the force value of the suspension cushion includes:

[0014] The first recognition result is determined based on a suspension cushion force threshold corresponding to the current operating condition of the vehicle and a force value of the suspension cushion.

[0015] In one possible implementation, determining the first recognition result based on a suspension cushion force threshold corresponding to the current operating condition of the vehicle and a force value of the suspension cushion includes:

[0016] When the force value of the suspension cushion is greater than a suspension cushion force threshold corresponding to the current operating condition of the vehicle, determining the first recognition result as that the suspension cushion does not meet the requirements;

[0017] When the force value of the suspension cushion is less than or equal to a suspension cushion force threshold corresponding to the current working condition of the vehicle, the first recognition result is determined to be that the suspension cushion meets the requirement.

[0018] In a possible implementation, determining the second recognition result based on the displacement value of the suspension cushion and the suspension vibration acceleration value includes:

[0019] When the displacement value of the suspension cushion is greater than the suspension cushion displacement threshold, or the suspension vibration acceleration value is greater than the suspension vibration acceleration threshold, determining the second recognition result as unreliable suspension;

[0020] When the displacement value of the suspension cushion is less than or equal to the suspension cushion displacement threshold, and the suspension vibration acceleration value is less than or equal to the suspension vibration acceleration threshold, the second recognition result is determined to be suspension reliable.

[0021] In a possible implementation, the performing fault identification on the engine mount system based on the first identification result and the second identification result includes:

[0022] If it is determined that the first recognition result is that the suspension cushion meets the requirements and the second recognition result is that the suspension is reliable, determining that there is no fault in the engine mounting system;

[0023] If it is determined that the first recognition result is that the suspension cushion does not meet the requirements, and the second recognition result is that the suspension is unreliable, determining that there is a fault in the engine mounting system;

[0024] If it is determined that the first recognition result is that the suspension cushion does not meet the requirements and the second recognition result is that the suspension is reliable, re-determine the first recognition result after a preset time interval, and perform fault identification on the engine mount system based on the re-determined first recognition result;

[0025] When it is determined that the first identification result is that the suspension cushion meets the requirements and the second identification result is that the suspension is unreliable, fault identification is performed on the engine mount system based on the current operating condition of the vehicle.

[0026] In a possible implementation, the performing fault identification on the engine mount system based on the re-determined first identification result includes:

[0027] If the re-determined first identification result is that the suspension cushion meets the requirements, determining that there is no fault in the engine mounting system;

[0028] When the re-determined first identification result is that the suspension cushion does not meet the requirements, it is determined that there is a fault in the engine mounting system.

[0029] In one possible implementation, the performing fault identification on the engine mount system based on the current operating condition of the vehicle includes:

[0030] determining a suspension cushion displacement threshold and a suspension vibration acceleration threshold corresponding to the current operating condition of the vehicle based on the current operating condition of the vehicle;

[0031] If the displacement value of the suspension cushion is greater than a suspension cushion displacement threshold corresponding to the current operating condition of the vehicle, or if the suspension vibration acceleration value is greater than a suspension vibration acceleration threshold corresponding to the current operating condition of the vehicle, it is determined that a fault exists in the engine mounting system;

[0032] When the displacement value of the suspension cushion is less than or equal to the suspension cushion displacement threshold corresponding to the current operating condition of the vehicle, and the suspension vibration acceleration value is less than or equal to the suspension vibration acceleration threshold corresponding to the current operating condition of the vehicle, it is determined that there is no fault in the engine mounting system.

[0033] In one possible implementation, determining the current operating condition of the vehicle based on the current road spectrum information of the vehicle includes:

[0034] Determine the current transmission ratio of the vehicle based on the current vehicle speed, engine speed, rear axle speed ratio, and wheel radius;

[0035] Determine the vehicle's current operating condition based on the vehicle's current transmission ratio, engine output torque, and operating roadmap.

[0036] The present invention also provides a fault identification device for an engine mounting system, comprising:

[0037] A determination module, for determining the current operating condition of the vehicle based on the current road spectrum information of the vehicle;

[0038] an acquisition module, configured to acquire load information of the engine mounting system, wherein the load information includes a force value of the mounting pad, a displacement value of the mounting pad, and a mounting vibration acceleration value;

[0039] An identification module is used to identify faults of the engine mounting system based on the current operating condition of the vehicle and the load information.

[0040] The present invention also provides an electronic device comprising a memory and a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the engine mount system fault identification method as described above is implemented.

[0041] The present invention further provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the fault identification method of the engine mount system as described above is implemented.

[0042] The beneficial effects of the present invention are as follows: the engine mount system fault identification method and device provided by the present invention first determine the vehicle's current operating condition through the vehicle's current road spectrum information, and then identify the engine mount system fault in combination with the vehicle's current operating condition and the load information of the engine mount system. While realizing the suspension system fault identification under the vehicle's operating state, the influence of the operating condition on the identification process is taken into account, thereby improving the accuracy of the suspension system fault identification. While realizing the engine mount system fault identification, the present invention improves the flexibility of the fault identification process and improves the accuracy of fault identification. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A schematic flow chart of an embodiment of a method for identifying a fault of an engine mount system provided by the present invention;

[0044] Figure 2 A schematic flow chart of an embodiment of a vehicle operating condition determination process provided by the present invention;

[0045] Figure 3 A schematic flow chart of an embodiment of an engine mount system fault diagnosis process provided by the present invention;

[0046] Figure 4 A schematic diagram of an embodiment of the relationship between the force and displacement of a cushion provided by the present invention;

[0047] Figure 5A schematic structural diagram of an embodiment of a fault identification device for an engine mounting system provided by the present invention;

[0048] Figure 6 This is a structural diagram of an embodiment of an electronic device provided by the present invention. DETAILED DESCRIPTION

[0049] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, and are not used to limit the scope of the present invention.

[0050] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. Furthermore, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0051] In the description of the present invention, reference to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute a separate or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the described embodiment may be combined with other embodiments.

[0052] The engine mount system is used to reduce and control the transmission of engine vibration and provide support for the engine. Failure of the engine mount can generate loud noise, impacting driving comfort, fuel efficiency, and component life. Therefore, timely identification of engine mount system failures is crucial.

[0053] Existing suspension system fault identification solutions primarily rely on manual analysis of unusual noises and vibrations, which can be time-consuming. Furthermore, the vehicle must be stationary and inspectors must be present during testing, which presents certain limitations. Fault identification solutions that rely on sensor-based information are easily affected by factors such as road conditions, resulting in limited accuracy.

[0054] In order to solve the above problems, the present invention provides a fault identification method for an engine mount system.

[0055] The specific embodiments are described in detail below:

[0056] A specific embodiment of the present invention discloses a fault identification method for an engine mounting system, combining Figure 1 Come and see, Figure 1 This is a flow chart of an embodiment of a method for identifying a fault of an engine mount system provided by the present invention, comprising steps S101 to S103, wherein:

[0057] In step S101, the current operating condition of the vehicle is determined based on the current road spectrum information of the vehicle;

[0058] In step S102, load information of the engine mounting system is obtained, wherein the load information includes a force value of the mounting cushion, a displacement value of the mounting cushion, and a mounting vibration acceleration value;

[0059] In step S103 , fault identification is performed on the engine mount system based on the current operating condition of the vehicle and the load information.

[0060] During implementation, the vehicle's current operating condition is first determined based on current road conditions (e.g., vehicle speed, engine speed, engine output torque, and operating route map). Simultaneously, engine mount system load information, including the force applied to the mount cushions, the displacement of the mount cushions, and the mount vibration acceleration, is acquired. This engine mount system load information can be collected and acquired using various sensors within the system. Finally, the vehicle's current operating condition and engine mount system load information can be used to identify engine mount system faults.

[0061] Compared with the prior art, the engine mount system fault identification method provided in this embodiment first determines the vehicle's current operating condition through the vehicle's current road spectrum information, and then combines the vehicle's current operating condition with the load information of the engine mount system to identify the engine mount system fault. While realizing the suspension system fault identification under the vehicle's operating state, it takes into account the impact of the operating conditions on the identification process, thereby improving the accuracy of the suspension system fault identification. While realizing the engine mount system fault identification, the present invention improves the flexibility of the fault identification process and improves the accuracy of fault identification.

[0062] Exemplarily, the performing fault identification on the engine mount system based on the current operating condition of the vehicle and the load information includes:

[0063] Determining a first recognition result based on the current operating condition of the vehicle and the force value of the suspension cushion;

[0064] determining a second recognition result based on the displacement value of the suspension cushion and the suspension vibration acceleration value;

[0065] Fault identification is performed on the engine mount system based on the first identification result and the second identification result.

[0066] Specifically, when identifying engine mount system faults based on the vehicle's current operating conditions and load information, a first identification result can be determined based on the vehicle's current operating conditions and the force applied to the mount cushions, and a second identification result can be determined based on the mount cushions' displacement and the mount vibration acceleration. The first and second identification results are then combined to identify engine mount system faults.

[0067] Exemplarily, determining the first recognition result based on the current operating condition of the vehicle and the force value of the suspension cushion includes:

[0068] The first recognition result is determined based on a suspension cushion force threshold corresponding to the current operating condition of the vehicle and a force value of the suspension cushion.

[0069] Specifically, when determining the first recognition result based on the vehicle's current operating condition and the suspension cushion force value, the suspension cushion force threshold corresponding to the vehicle's current operating condition can be determined first. Then, based on the suspension cushion force threshold and the suspension cushion force value corresponding to the vehicle's current operating condition, the first recognition result can be determined. The suspension cushion force threshold corresponding to the vehicle's current operating condition can be obtained by analyzing the suspension cushion force values ​​of the vehicle under various operating conditions collected by a big data platform. By incorporating the vehicle's current operating condition into suspension system fault identification, the accuracy of fault identification can be effectively improved.

[0070] Exemplarily, determining the first recognition result based on a suspension cushion force threshold corresponding to the current operating condition of the vehicle and a force value of the suspension cushion includes:

[0071] When the force value of the suspension cushion is greater than a suspension cushion force threshold corresponding to the current operating condition of the vehicle, determining the first recognition result as that the suspension cushion does not meet the requirements;

[0072] When the force value of the suspension cushion is less than or equal to a suspension cushion force threshold corresponding to the current working condition of the vehicle, the first recognition result is determined to be that the suspension cushion meets the requirement.

[0073] Specifically, when determining the first recognition result based on the suspension cushion force threshold and the force value of the suspension cushion corresponding to the current working condition of the vehicle, if the force value of the suspension cushion is greater than the suspension cushion force threshold corresponding to the current working condition of the vehicle, then it can be determined that the first recognition result is that the suspension cushion does not meet the requirements; if the force value of the suspension cushion is less than or equal to the suspension cushion force threshold corresponding to the current working condition of the vehicle, then it can be determined that the first recognition result is that the suspension cushion meets the requirements.

[0074] Exemplarily, determining the second recognition result based on the displacement value of the suspension cushion and the suspension vibration acceleration value includes:

[0075] When the displacement value of the suspension cushion is greater than the suspension cushion displacement threshold, or the suspension vibration acceleration value is greater than the suspension vibration acceleration threshold, determining the second recognition result as unreliable suspension;

[0076] When the displacement value of the suspension cushion is less than or equal to the suspension cushion displacement threshold, and the suspension vibration acceleration value is less than or equal to the suspension vibration acceleration threshold, the second recognition result is determined to be suspension reliable.

[0077] Specifically, when determining the second identification result based on the displacement value and suspension vibration acceleration value of the suspension cushion, the suspension cushion displacement threshold (for example, 5 mm) and the suspension vibration acceleration threshold (for example, 80% of the maximum acceleration) can be first determined based on the vehicle operation data collected by the big data platform.

[0078] If the displacement value of the suspension cushion is greater than the suspension cushion displacement threshold, or the suspension vibration acceleration value is greater than the suspension vibration acceleration threshold, then the second identification result can be determined as the suspension is unreliable; if the displacement value of the suspension cushion is less than or equal to the suspension cushion displacement threshold, and the suspension vibration acceleration value is less than or equal to the suspension vibration acceleration threshold, then the second identification result can be determined as the suspension is reliable.

[0079] Exemplarily, the performing fault identification on the engine mount system based on the first identification result and the second identification result includes:

[0080] If it is determined that the first recognition result is that the suspension cushion meets the requirements and the second recognition result is that the suspension is reliable, determining that there is no fault in the engine mounting system;

[0081] If it is determined that the first recognition result is that the suspension cushion does not meet the requirements, and the second recognition result is that the suspension is unreliable, determining that there is a fault in the engine mounting system;

[0082] If it is determined that the first recognition result is that the suspension cushion does not meet the requirements and the second recognition result is that the suspension is reliable, re-determine the first recognition result after a preset time interval, and perform fault identification on the engine mount system based on the re-determined first recognition result;

[0083] When it is determined that the first identification result is that the suspension cushion meets the requirements and the second identification result is that the suspension is unreliable, fault identification is performed on the engine mount system based on the current operating condition of the vehicle.

[0084] Specifically, when the engine suspension system fault is identified based on the first identification result and the second identification result, if the first identification result is determined to be that the suspension cushion meets the requirements, and the second identification result is that the suspension is reliable, then it can be determined that there is no fault in the engine suspension system; if the first identification result is determined to be that the suspension cushion does not meet the requirements, and the second identification result is that the suspension is unreliable, then it can be determined that there is a fault in the engine suspension system; if the first identification result is determined to be that the suspension cushion does not meet the requirements, and the second identification result is that the suspension is reliable, then the first identification result can be re-determined after a preset time interval (for example, 1 hour), and the engine suspension system fault can be identified based on the re-determined first identification result; if the first identification result is determined to be that the suspension cushion meets the requirements, and the second identification result is that the suspension is unreliable, then the engine suspension system fault can be identified based on the current operating conditions of the vehicle.

[0085] Exemplarily, the performing fault identification on the engine mount system based on the re-determined first identification result includes:

[0086] If the re-determined first identification result is that the suspension cushion meets the requirements, determining that there is no fault in the engine mounting system;

[0087] When the re-determined first identification result is that the suspension cushion does not meet the requirements, it is determined that there is a fault in the engine mounting system.

[0088] Specifically, when the first identification result is determined to be that the suspension cushion does not meet the requirements, and the second identification result is that the suspension is reliable, and it is necessary to perform fault identification on the engine suspension system based on the re-determined first identification result, if the re-determined first identification result is that the suspension cushion meets the requirements, it can be determined that there is no fault in the engine suspension system; if the re-determined first identification result is that the suspension cushion does not meet the requirements, it can be determined that there is a fault in the engine suspension system.

[0089] Exemplarily, the performing fault identification on the engine mount system based on the current operating condition of the vehicle includes:

[0090] determining a suspension cushion displacement threshold and a suspension vibration acceleration threshold corresponding to the current operating condition of the vehicle based on the current operating condition of the vehicle;

[0091] If the displacement value of the suspension cushion is greater than a suspension cushion displacement threshold corresponding to the current operating condition of the vehicle, or if the suspension vibration acceleration value is greater than a suspension vibration acceleration threshold corresponding to the current operating condition of the vehicle, it is determined that a fault exists in the engine mounting system;

[0092] When the displacement value of the suspension cushion is less than or equal to the suspension cushion displacement threshold corresponding to the current operating condition of the vehicle, and the suspension vibration acceleration value is less than or equal to the suspension vibration acceleration threshold corresponding to the current operating condition of the vehicle, it is determined that there is no fault in the engine mounting system.

[0093] Specifically, when it is determined that the first recognition result is that the suspension cushion meets the requirements, and the second recognition result is that the suspension is unreliable, and it is necessary to identify the fault of the engine suspension system according to the current working condition of the vehicle, the suspension cushion displacement values ​​and suspension vibration acceleration values ​​of the vehicle under various working conditions collected by the big data platform can be analyzed to obtain the suspension cushion displacement threshold and suspension vibration acceleration threshold corresponding to the current working condition of the vehicle.

[0094] If the displacement value of the suspension cushion is greater than the suspension cushion displacement threshold corresponding to the current working condition of the vehicle, or the suspension vibration acceleration value is greater than the suspension vibration acceleration threshold corresponding to the current working condition of the vehicle, it can be determined that there is a fault in the engine suspension system; if the displacement value of the suspension cushion is less than or equal to the suspension cushion displacement threshold corresponding to the current working condition of the vehicle, and the suspension vibration acceleration value is less than or equal to the suspension vibration acceleration threshold corresponding to the current working condition of the vehicle, it can be determined that there is no fault in the engine suspension system.

[0095] Exemplarily, determining the current operating condition of the vehicle based on the current road spectrum information of the vehicle includes:

[0096] Determine the current transmission ratio of the vehicle based on the current vehicle speed, engine speed, rear axle speed ratio, and wheel radius;

[0097] Determine the vehicle's current operating condition based on the vehicle's current transmission ratio, engine output torque, and operating roadmap.

[0098] Specifically, when determining the vehicle's current operating condition based on the vehicle's current road profile information, the vehicle's current transmission ratio can first be determined based on the vehicle's current speed, engine speed, rear axle speed ratio, and wheel radius. For example, the vehicle's current transmission ratio can be determined using the following formula:

[0099]

[0100] in, Indicates the vehicle's current gearbox ratio. represents the wheel radius, Indicates the engine speed, Indicates vehicle speed, Indicates the rear axle speed ratio.

[0101] Afterwards, the vehicle's current operating condition can be preliminarily judged based on the vehicle's current transmission ratio and engine output torque, and then combined with the operating route map to determine the vehicle's current operating condition (such as uphill and downhill, turning, acceleration, deceleration, etc.).

[0102] The following is a specific embodiment to better illustrate the technical solution of the present invention:

[0103] The present invention first obtains the vehicle's road spectrum information through the big data of the Internet of Vehicles, and then obtains the vehicle's working condition. Then, it obtains the load information of the suspension system through sensors. Then, through the judgment module, it determines whether the suspension system status is normal. Finally, it combines the working condition information, map information and data collected by the sensors to finally determine whether the suspension system has a fault.

[0104] Combine Figure 2 Come and see, Figure 2 This is a flow chart of an embodiment of the vehicle operating condition determination process provided by the present invention. By acquiring the vehicle's road profile information, including vehicle speed, engine speed, transmission gear information, and rear axle speed ratio, the vehicle's transmission speed ratio can be obtained through Internet of Vehicles big data:

[0105]

[0106] The vehicle operating conditions can be derived based on the transmission ratio, engine output torque, and the route map.

[0107] By installing three-force sensors on the engine suspension bracket and support, the force on the suspension system can be obtained, and thus the force on the cushion can be obtained. At the same time, the compression of the cushion can be obtained through the displacement sensor, and the suspension vibration acceleration value can be obtained through the acceleration sensors at the frame end and the engine end.

[0108] Combine Figure 3 Come and see, Figure 3 This is a flow chart of an embodiment of the engine mount system fault diagnosis process provided by the present invention. The process is specifically as follows:

[0109] First, the monitoring module obtains the vehicle's operating conditions and the load information on the suspension system. Then, the judgment module makes the following judgments:

[0110] Judgment module A: Through the force of the suspended cushion and the working condition information, it can be judged whether the cushion meets the requirements. Figure 4 Come and see, Figure 4 This is a schematic diagram of an embodiment of the relationship between the force and displacement of the cushion provided by the present invention. The force and working condition information of the suspended cushion are shown in Table 1:

[0111] Table 1: Correspondence between the force and working condition information of the suspension cushion

[0112]

[0113] Judgment module B: determines whether the transmissibility and cushion displacement of the suspension system are greater than a preset threshold.

[0114] The sampling interval is 1 hour. The judgment is made by combining the judgment modules A+B. If only A does not meet the requirements, the observation can be continued and the sampling interval can be shortened to make another judgment. If the requirements are still not met after the second judgment, the information will be fed back and it will be preliminarily judged that the cushion is not suitable for the working conditions of the vehicle.

[0115] If B does not meet the requirements and A does not meet the requirements at the same time, the information will be returned to the controller and the driver will need to stop the vehicle for inspection, check the suspension system and surrounding systems, and determine the source of the fault.

[0116] If B is not satisfied but A is satisfied, it is necessary to make a judgment based on the road conditions and working conditions provided by big data. For example, different road conditions can be identified through big data and characteristic values ​​can be extracted, namely plain expressways, plain ordinary roads, plain urban roads, hilly expressways, hilly ordinary roads, hilly urban roads, mountain expressways, mountain ordinary roads and mountain urban roads. The above different road conditions correspond to different characteristic values, which can be used to further judge the suspension system failure.

[0117] By combining Internet of Vehicles big data, the present invention can effectively identify suspension system faults and improve the life of the suspension system.

[0118] The embodiment of the present invention also provides a fault identification device for an engine mounting system, Figure 5 Come and see, Figure 5 This is a schematic structural diagram of an embodiment of a fault identification device for an engine mount system provided by the present invention. The fault identification device 500 for an engine mount system includes:

[0119] A determination module 501 is configured to determine a current operating condition of the vehicle based on the vehicle's current road profile information;

[0120] An acquisition module 502 is configured to acquire load information of the engine mounting system, wherein the load information includes a force value of the mounting pad, a displacement value of the mounting pad, and a mounting vibration acceleration value;

[0121] The identification module 503 is configured to identify faults of the engine mounting system based on the current operating condition of the vehicle and the load information.

[0122] The specific implementation of each module of the fault identification device of the engine mount system can refer to the description of the fault identification method of the engine mount system, and has similar beneficial effects, which will not be repeated here.

[0123] It should be noted that the fault identification device of the engine mounting system may be provided in an existing engine mounting system or may be provided as an independent device, and the present invention does not impose any specific limitation on this.

[0124] The embodiment of the present invention further provides an electronic device, Figure 6 Come and see, Figure 6 This is a structural diagram of an embodiment of an electronic device provided by the present invention. The electronic device 600 includes a processor 601, a memory 602, and a computer program stored in the memory 602 and executable on the processor 601. When the processor 601 executes the program, the engine mount system fault identification method described above is implemented.

[0125] As a preferred embodiment, the electronic device 600 further includes a display 603 for displaying the engine mount system fault identification method executed by the processor 601 .

[0126] Exemplarily, the computer program may be divided into one or more modules / units, one or more of which are stored in the memory 602 and executed by the processor 601 to implement the present invention. One or more modules / units may be a series of computer program instruction segments capable of performing specific functions, and the instruction segments are used to describe the execution process of the computer program in the electronic device 600. For example, the computer program may be divided into the determination module 501, acquisition module 502, and identification module 503 in the above-mentioned embodiment. The specific functions of each module are as described above and are not further described here.

[0127] The electronic device 600 may be a desktop computer, notebook, PDA, or smart phone with an adjustable camera module.

[0128] Processor 601 may be an integrated circuit chip with signal processing capabilities. The processor 601 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), or a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present invention. The general-purpose processor may be a microprocessor or any conventional processor.

[0129] The memory 602 may be, but is not limited to, a random access memory (RAM), a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), etc. The memory 602 is used to store programs. The processor 601 executes the programs after receiving an execution instruction. The process definition method disclosed in any of the aforementioned embodiments of the present invention may be applied to the processor 601 or implemented by the processor 601.

[0130] The display 603 may be an LCD display or an LED display, for example, a display on a vehicle-mounted device.

[0131] It is understandable that Figure 6 The structure shown is only a schematic diagram of the structure of the electronic device 600. The electronic device 600 may also include Figure 6 More or fewer components as shown. Figure 6 Each component shown in the figure can be implemented by hardware, software or a combination thereof.

[0132] The electronic device provided according to the above embodiment of the present invention can be implemented with reference to the specific description of the method for identifying a fault of an engine mount system according to the present invention, and has similar beneficial effects as the method for identifying a fault of an engine mount system, which will not be described in detail here.

[0133] An embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon. When the program is executed by a processor, the above-mentioned method for identifying a fault of an engine mount system is implemented.

[0134] Generally speaking, computer instructions for implementing the method of the present invention may be carried by any combination of one or more computer-readable storage media. Non-transitory computer-readable storage media may include any computer-readable media except for signals that are temporarily propagating.

[0135] A computer-readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples (a non-exhaustive list) of computer-readable storage media include: an electrical connection having one or more conductors, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In this document, a computer-readable storage medium may be any tangible medium that can contain or store a program for use by or in connection with an instruction execution system, apparatus, or device.

[0136] Computer program code for performing the operations of the present invention can be written in one or more programming languages, or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as C or similar programming languages. In particular, Python, which is suitable for neural network computing, and platform frameworks such as TensorFlow and PyTorch can be used. The program code can be executed entirely on the user's computer, partially on the user's computer, as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0137] Those skilled in the art will appreciate that all or part of the process steps of the above-described embodiments can be implemented by instructing related hardware through a computer program, and the program can be stored in a computer-readable storage medium, such as a magnetic disk, an optical disk, a read-only memory, or a random access memory.

[0138] The present invention discloses a method and device for identifying faults of an engine mount system. First, the current operating condition of the vehicle is determined by the current road spectrum information of the vehicle. Then, the engine mount system faults are identified in combination with the current operating condition of the vehicle and the load information of the engine mount system. While realizing the identification of mount system faults under the vehicle running state, the influence of the operating condition on the identification process is taken into account, thereby improving the accuracy of the mount system fault identification. While realizing the identification of engine mount system faults, the present invention improves the flexibility of the fault identification process and improves the accuracy of the fault identification.

[0139] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed by the present invention should be covered by the scope of protection of the present invention.

Claims

1. A method for identifying a fault of an engine mount system, characterized in that: include: Determine the vehicle's current operating condition based on the vehicle's current road spectrum information; Acquiring load information of the engine mounting system, wherein the load information includes a force value of the mounting pad, a displacement value of the mounting pad, and a mounting vibration acceleration value; performing fault identification on the engine mount system based on the current operating condition of the vehicle and the load information; The performing fault identification on the engine mount system based on the current operating condition of the vehicle and the load information includes: Determining a first recognition result based on the current operating condition of the vehicle and the force value of the suspension cushion; determining a second recognition result based on the displacement value of the suspension cushion and the suspension vibration acceleration value; performing fault identification on the engine mount system based on the first identification result and the second identification result; The determining of the current operating condition of the vehicle based on the current road spectrum information of the vehicle includes: Determine the current transmission ratio of the vehicle based on the current vehicle speed, engine speed, rear axle speed ratio, and wheel radius; Determine the vehicle's current operating condition based on the vehicle's current transmission ratio, engine output torque, and operating roadmap; When the force value of the suspension cushion is greater than the suspension cushion force threshold corresponding to the current working condition of the vehicle, determining the first recognition result as that the suspension cushion does not meet the requirements; When the force value of the suspension cushion is less than or equal to the suspension cushion force threshold corresponding to the current working condition of the vehicle, determining the first recognition result as that the suspension cushion meets the requirement; When the displacement value of the suspension cushion is greater than the suspension cushion displacement threshold, or the suspension vibration acceleration value is greater than the suspension vibration acceleration threshold, determining the second recognition result as unreliable suspension; When the displacement value of the suspension cushion is less than or equal to the suspension cushion displacement threshold, and the suspension vibration acceleration value is less than or equal to the suspension vibration acceleration threshold, determining that the second recognition result is reliable suspension; If it is determined that the first recognition result is that the suspension cushion meets the requirements and the second recognition result is that the suspension is reliable, it is determined that there is no fault in the engine mounting system; If it is determined that the first identification result is that the suspension cushion does not meet the requirements, and the second identification result is that the suspension is unreliable, it is determined that there is a fault in the engine mounting system; If the first identification result is determined to be that the suspension cushion does not meet the requirements and the second identification result is that the suspension is reliable, re-determine the first identification result after a preset time interval, and perform fault identification on the engine mount system based on the re-determined first identification result; When it is determined that the first identification result is that the suspension cushion meets the requirements and the second identification result is that the suspension is unreliable, fault identification is performed on the engine mount system based on the current operating condition of the vehicle.

2. The engine mount system fault identification method according to claim 1, characterized in that: The determining of a first recognition result based on the current operating condition of the vehicle and the force value of the suspension cushion includes: The first recognition result is determined based on a suspension cushion force threshold corresponding to the current operating condition of the vehicle and a force value of the suspension cushion.

3. The fault identification method of the engine mount system according to claim 1, characterized in that: The performing fault identification on the engine mount system based on the re-determined first identification result includes: If the re-determined first identification result is that the suspension cushion meets the requirements, determining that there is no fault in the engine mounting system; When the re-determined first identification result is that the suspension cushion does not meet the requirements, it is determined that there is a fault in the engine mounting system.

4. The fault identification method of the engine mount system according to claim 1, characterized in that: The performing fault identification on the engine mount system based on the current operating condition of the vehicle includes: determining a suspension cushion displacement threshold and a suspension vibration acceleration threshold corresponding to the current operating condition of the vehicle based on the current operating condition of the vehicle; If the displacement value of the suspension cushion is greater than a suspension cushion displacement threshold corresponding to the current operating condition of the vehicle, or if the suspension vibration acceleration value is greater than a suspension vibration acceleration threshold corresponding to the current operating condition of the vehicle, it is determined that a fault exists in the engine mounting system; When the displacement value of the suspension cushion is less than or equal to the suspension cushion displacement threshold corresponding to the current operating condition of the vehicle, and the suspension vibration acceleration value is less than or equal to the suspension vibration acceleration threshold corresponding to the current operating condition of the vehicle, it is determined that there is no fault in the engine mounting system.

5. A fault identification device for an engine mounting system, characterized in that: include: A determination module, for determining the current operating condition of the vehicle based on the current road spectrum information of the vehicle; an acquisition module, configured to acquire load information of the engine mounting system, wherein the load information includes a force value of the mounting pad, a displacement value of the mounting pad, and a mounting vibration acceleration value; an identification module, configured to identify a fault of the engine mount system based on a current operating condition of the vehicle and the load information; The performing fault identification on the engine mount system based on the current operating condition of the vehicle and the load information includes: Determining a first recognition result based on the current operating condition of the vehicle and the force value of the suspension cushion; determining a second recognition result based on the displacement value of the suspension cushion and the suspension vibration acceleration value; performing fault identification on the engine mount system based on the first identification result and the second identification result; The determining of the current operating condition of the vehicle based on the current road spectrum information of the vehicle includes: Determine the current transmission ratio of the vehicle based on the current vehicle speed, engine speed, rear axle speed ratio, and wheel radius; Determine the vehicle's current operating condition based on the vehicle's current transmission ratio, engine output torque, and operating roadmap; When the force value of the suspension cushion is greater than the suspension cushion force threshold corresponding to the current working condition of the vehicle, determining the first recognition result as that the suspension cushion does not meet the requirements; When the force value of the suspension cushion is less than or equal to the suspension cushion force threshold corresponding to the current working condition of the vehicle, determining the first recognition result as that the suspension cushion meets the requirement; When the displacement value of the suspension cushion is greater than the suspension cushion displacement threshold, or the suspension vibration acceleration value is greater than the suspension vibration acceleration threshold, determining the second recognition result as unreliable suspension; When the displacement value of the suspension cushion is less than or equal to the suspension cushion displacement threshold, and the suspension vibration acceleration value is less than or equal to the suspension vibration acceleration threshold, determining that the second recognition result is reliable suspension; If it is determined that the first recognition result is that the suspension cushion meets the requirements and the second recognition result is that the suspension is reliable, it is determined that there is no fault in the engine mounting system; If it is determined that the first identification result is that the suspension cushion does not meet the requirements, and the second identification result is that the suspension is unreliable, it is determined that there is a fault in the engine mounting system; If the first identification result is determined to be that the suspension cushion does not meet the requirements and the second identification result is that the suspension is reliable, re-determine the first identification result after a preset time interval, and perform fault identification on the engine mount system based on the re-determined first identification result; When it is determined that the first identification result is that the suspension cushion meets the requirements and the second identification result is that the suspension is unreliable, fault identification is performed on the engine mount system based on the current operating condition of the vehicle.

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