Fault identification method and device for engine suspension system

Abstract

The invention relates to a fault identification method and device for an engine suspension system, and belongs to the technical field of vehicle fault monitoring, and the fault identification method for the engine suspension system comprises the steps: determining the current working condition of a vehicle based on the current road spectrum information of the vehicle; obtaining load information of the engine suspension system, wherein the load information comprises a stress value of a suspension cushion, a displacement value of the suspension cushion and a suspension vibration acceleration value; and based on the current working condition of the vehicle and the load information, fault recognition is conducted on the engine suspension system. According to the method, the engine suspension system fault identification is realized, the flexibility of the fault identification process is improved, and the fault identification accuracy is improved.

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 suspension system. Background Art

[0002] The engine mount system is used to reduce and control the transmission of engine vibration and to support the engine. When the engine mount fails, it will generate a lot of noise, affect driving comfort, and also affect fuel efficiency and component life. Therefore, it is very important to identify engine mount system failures in a timely manner.

[0003] The existing suspension system fault identification scheme is mainly judged manually through abnormal noise and vibration, which is time-consuming. In addition, the vehicle needs to be stationary during the inspection, and the inspection personnel need to be on site during the inspection, which has certain limitations. The fault identification scheme that collects information through sensors is easily affected by other factors such as road conditions, and the identification accuracy is not high enough. Summary of the invention

[0004] In view of this, it is necessary to provide a method and device for fault identification of an engine suspension system to solve the problem that the existing suspension 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 mounting system, comprising: Determine the current working condition of the vehicle based on the current road spectrum information of the vehicle; Acquiring load information of the engine mounting system, wherein the load information includes a force value of a mounting cushion, a displacement value of the mounting cushion, and a mounting vibration acceleration value; Based on the current operating condition of the vehicle and the load information, fault identification is performed on the engine mount system.

[0006] In a possible implementation, the performing fault identification on the engine mount system based on the current working condition of the vehicle and the load information includes: Determining a first recognition result based on the current working 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; Fault identification is performed on the engine mount system based on the first identification result and the second identification result.

[0007] In a possible implementation, determining the first recognition result based on the current working 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 working condition of the vehicle and a force value of the suspension cushion.

[0008] In a possible implementation, determining the first recognition result based on a suspension cushion force threshold corresponding to the current working condition of the vehicle and a force value of the suspension cushion includes: 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 that the first recognition result is that the suspension cushion does not meet the requirement; 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, it is determined that the first recognition result is that the suspension cushion meets the requirement.

[0009] 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: 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 that the second recognition result is that the suspension is unreliable; 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, it is determined that the second recognition result is that the suspension is reliable.

[0010] 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: 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 reliable, determining that there is no fault in the engine suspension system; When 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 suspension system; 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, the first recognition result is re-determined after a preset time interval, and fault identification is performed on the engine suspension system based on the re-determined first recognition 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 suspension system based on the current operating condition of the vehicle.

[0011] In a possible implementation, the performing fault identification on the engine mount system based on the re-determined first identification result includes: When the first identification result re-determined is that the suspension cushion meets the requirement, determining that there is no fault in the engine suspension system; When the re-determined first identification result is that the suspension cushion does not meet the requirement, it is determined that there is a fault in the engine suspension system.

[0012] In a possible implementation, 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; When 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 is determined that the engine suspension system has a fault; 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 suspension system.

[0013] In a possible implementation, determining the current operating condition of the vehicle based on the current road spectrum information of the vehicle includes: Determine the current gearbox 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.

[0014] The present invention also provides a fault identification device for an engine mounting system, comprising: A determination module, used to determine the current working condition of the vehicle based on the current road spectrum information of the vehicle; An acquisition module, used to acquire load information of the engine mounting system, wherein the load information includes a force value of a mounting cushion, a displacement value of the mounting cushion, and a mounting vibration acceleration value; An identification module is used to identify faults of the engine mounting system based on the current working condition of the vehicle and the load information.

[0015] The present invention also provides an electronic device, including 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 suspension system fault identification method as described above is implemented.

[0016] The present invention also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the fault identification method of the engine suspension system as described above is implemented.

[0017] The beneficial effects of the present invention are as follows: the engine suspension system fault identification method and device provided by the present invention first determine the current operating condition of the vehicle through the current road spectrum information of the vehicle, and then identify the fault of the engine suspension system in combination with the current operating condition of the vehicle and the load information of the engine suspension system. While realizing the suspension system fault identification under the vehicle running state, the influence of the working condition on the identification process is taken into account, thereby improving the accuracy of the suspension system fault identification. While realizing the engine suspension 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

[0018] Figure 1 A schematic flow chart of an embodiment of a method for identifying a fault of an engine mounting system provided by the present invention; Figure 2 A schematic diagram of a flow chart of an embodiment of a vehicle operating condition determination process provided by the present invention; Figure 3 A schematic flow chart of an embodiment of an engine mount system fault diagnosis process provided by the present invention; Figure 4 A schematic diagram of an embodiment of the relationship between the force and displacement of a cushion provided by the present invention; Figure 5 A schematic structural diagram of an embodiment of a fault identification device for an engine mounting system provided by the present invention; Figure 6 A schematic structural diagram of an electronic device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are 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, but are not used to limit the scope of the present invention.

[0020] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0021] In the description of the present invention, reference to an "embodiment" means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive of other embodiments. It is explicitly and implicitly understood by those skilled in the art that the described embodiments may be combined with other embodiments.

[0022] The engine mount system is used to reduce and control the transmission of engine vibration and to support the engine. When the engine mount fails, it will generate a lot of noise, affect driving comfort, and also affect fuel efficiency and component life. Therefore, it is very important to identify engine mount system failures in a timely manner.

[0023] The existing suspension system fault identification scheme is mainly judged manually through abnormal noise and vibration, which is time-consuming. In addition, the vehicle needs to be stationary during the inspection, and the inspection personnel need to be on site during the inspection, which has certain limitations. The fault identification scheme that collects information through sensors is easily affected by other factors such as road conditions, and the identification accuracy is not high enough.

[0024] In order to solve the above problems, the present invention provides a fault identification method for an engine mounting system.

[0025] The specific embodiments are described in detail below: A specific embodiment of the present invention discloses a method for identifying a fault of an engine mounting system. Figure 1 Come and see, Figure 1 The present invention provides a flow chart of an embodiment of a method for identifying a fault of an engine mounting system, including steps S101 to S103, wherein: In step S101, the current operating condition of the vehicle is determined based on the current road spectrum information of the vehicle; In step S102, load information of the engine mounting system is obtained, wherein the load information includes a force value of a mounting cushion, a displacement value of the mounting cushion, and a mounting vibration acceleration value; In step S103, fault identification is performed on the engine mount system based on the current working condition of the vehicle and the load information.

[0026] During implementation, the current working condition of the vehicle can be determined first based on the current road spectrum information of the vehicle (such as vehicle speed, engine speed, engine output torque, operation route map, etc.). At the same time, the load information of the engine suspension system including the force value of the suspension cushion, the displacement value of the suspension cushion and the suspension vibration acceleration value can be obtained. The load information of the engine suspension system can be collected and then obtained through various sensors set in the engine suspension system. Finally, the engine suspension system can be fault-identified based on the current working condition of the vehicle and the load information of the engine suspension system.

[0027] Compared with the prior art, the engine suspension system fault identification method provided in this embodiment first determines the current operating condition of the vehicle through the current road spectrum information of the vehicle, and then combines the current operating condition of the vehicle with the load information of the engine suspension system to perform fault identification on the engine suspension system. While realizing the suspension system fault identification under the vehicle running state, it takes into account the influence of the working condition on the identification process, thereby improving the accuracy of suspension system fault identification. While realizing the engine suspension system fault identification, the present invention improves the flexibility of the fault identification process and improves the accuracy of fault identification.

[0028] Exemplarily, the performing fault identification on the engine mount system based on the current working condition of the vehicle and the load information includes: Determining a first recognition result based on the current working 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; Fault identification is performed on the engine mount system based on the first identification result and the second identification result.

[0029] Specifically, when the engine suspension system is fault-identified based on the current working condition of the vehicle and the load information of the engine suspension system, the first identification result can be determined based on the current working condition of the vehicle and the force value of the suspension cushion, and the second identification result can be determined based on the displacement value of the suspension cushion and the suspension vibration acceleration value. Then, the first identification result and the second identification result are combined to perform fault identification on the engine suspension system.

[0030] Exemplarily, determining the first recognition result based on the current working 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 working condition of the vehicle and a force value of the suspension cushion.

[0031] Specifically, when determining the first recognition result based on the current working condition of the vehicle and the force value of the suspension cushion, the suspension cushion force threshold corresponding to the current working condition of the vehicle can be determined first, and then the first recognition result can be determined based on the suspension cushion force threshold and the force value of the suspension cushion corresponding to the current working condition of the vehicle. The suspension cushion force threshold corresponding to the current working condition of the vehicle can be obtained by analyzing the suspension cushion force values ​​of the vehicle under various working conditions collected by the big data platform. By combining the current working condition of the vehicle to identify the fault of the suspension system, the accuracy of fault identification can be effectively improved.

[0032] Exemplarily, determining the first recognition result based on a suspension cushion force threshold corresponding to the current working condition of the vehicle and a force value of the suspension cushion includes: 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 that the first recognition result is that the suspension cushion does not meet the requirement; 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, it is determined that the first recognition result is that the suspension cushion meets the requirement.

[0033] 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.

[0034] Exemplarily, determining the second recognition result based on the displacement value of the suspension cushion and the suspension vibration acceleration value includes: 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 that the second recognition result is that the suspension is unreliable; 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, it is determined that the second recognition result is that the suspension is reliable.

[0035] Specifically, when determining the second identification result based on the displacement value of the suspension cushion and the suspension vibration acceleration value, the suspension cushion displacement threshold (e.g., 5 mm) and the suspension vibration acceleration threshold (e.g., 80% of the maximum acceleration) can be first determined based on the vehicle operation data collected by the big data platform.

[0036] 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 recognition 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 recognition result can be determined as the suspension is reliable.

[0037] Exemplarily, the performing fault identification on the engine mount system based on the first identification result and the second identification result includes: 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 reliable, determining that there is no fault in the engine suspension system; When 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 suspension system; 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, the first recognition result is re-determined after a preset time interval, and fault identification is performed on the engine suspension system based on the re-determined first recognition 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 suspension system based on the current operating condition of the vehicle.

[0038] Specifically, when fault identification of the engine suspension system is performed 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 identification can be performed 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 identification can be performed based on the current operating conditions of the vehicle.

[0039] Exemplarily, the performing fault identification on the engine mount system based on the re-determined first identification result includes: When the first identification result re-determined is that the suspension cushion meets the requirement, determining that there is no fault in the engine suspension system; When the re-determined first identification result is that the suspension cushion does not meet the requirement, it is determined that there is a fault in the engine suspension system.

[0040] 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.

[0041] Exemplarily, 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; When 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 is determined that the engine suspension system has a fault; 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 suspension system.

[0042] Specifically, 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, and it is necessary to perform fault identification on the engine suspension system according to the current operating condition of the vehicle, the suspension cushion displacement values ​​and suspension vibration acceleration values ​​of the vehicle under various operating conditions collected by the big data platform can be first analyzed to obtain the suspension cushion displacement threshold and suspension vibration acceleration threshold corresponding to the current operating condition of the vehicle.

[0043] If the displacement value of the suspension cushion is greater than the suspension cushion displacement threshold corresponding to the current operating condition of the vehicle, or the suspension vibration acceleration value is greater than the suspension vibration acceleration threshold corresponding to the current operating 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 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 can be determined that there is no fault in the engine suspension system.

[0044] Exemplarily, determining the current operating condition of the vehicle based on the current road spectrum information of the vehicle includes: Determine the current gearbox 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.

[0045] Specifically, when determining the current working condition of the vehicle based on the current road spectrum information of the vehicle, the current gearbox ratio of the vehicle can be determined based on the current vehicle speed, engine speed, rear axle speed ratio and wheel radius. For example, the current gearbox ratio of the vehicle can be determined based on the following formula:

[0046] in, Indicates the current gearbox ratio of the vehicle. represents the wheel radius, Indicates the engine speed, Indicates vehicle speed. Indicates the rear axle speed ratio.

[0047] Afterwards, the current operating condition of the vehicle 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.).

[0048] The technical solution of the present invention is better described below with reference to a specific embodiment: 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 obtains the load information of the suspension system through the sensor, and then uses the judgment module to judge whether the suspension system is normal, and finally combines the working condition information, map information and data collected by the sensor to finally judge whether the suspension system has a fault.

[0049] Combination Figure 2 Come and see, Figure 2 This is a flow chart of an embodiment of a vehicle operating condition determination process provided by the present invention. The vehicle's road spectrum information, including vehicle speed, engine speed, gearbox gear information, and rear axle speed ratio, is obtained through the Internet of Vehicles big data to obtain the vehicle's gearbox speed ratio:

[0050] The vehicle operating conditions can be derived based on the gearbox ratio and engine output torque, as well as the route map.

[0051] By installing three-force sensors on the engine suspension bracket and support, the force of the suspension system can be obtained, thereby obtaining the force of the soft pad. At the same time, the compression of the soft pad 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.

[0052] Combination Figure 3 Come and see, Figure 3 This is a flow chart of an embodiment of an engine mount system fault diagnosis process provided by the present invention. The process is specifically as follows: First, the monitoring module obtains the vehicle's working condition and the load information on the suspension system, and then the judgment module makes the following judgments: 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: Table 1: Correspondence between the force and working condition information of the suspension cushion

[0053] Judgment module B: judge whether the transmissibility and cushion displacement of the suspension system are greater than a preset threshold.

[0054] 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 use in the working conditions of the vehicle.

[0055] 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 car for inspection, check the suspension system and peripheral systems, and determine the source of the fault.

[0056] 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.

[0057] The present invention can effectively identify suspension system failures and increase the life of the suspension system by combining Internet of Vehicles big data.

[0058] The present invention also provides a fault identification device for an engine suspension 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 mounting system provided by the present invention. The fault identification device 500 for an engine mounting system includes: A determination module 501 is used to determine the current working condition of the vehicle based on the current road spectrum information of the vehicle; An acquisition module 502 is used to acquire load information of the engine mounting system, wherein the load information includes a force value of a mounting cushion, a displacement value of the mounting cushion, and a mounting vibration acceleration value; The identification module 503 is used to identify faults of the engine mounting system based on the current working condition of the vehicle and the load information.

[0059] The specific implementation of each module of the fault identification device of the engine mounting system can refer to the description of the fault identification method of the engine mounting system, and has similar beneficial effects, which will not be repeated here.

[0060] It should be noted that the fault identification device of the engine mounting system may be arranged in an existing engine mounting system, or may be arranged as an independent device, and the present invention does not make any specific limitation to this.

[0061] The embodiment of the present invention further provides an electronic device, Figure 6 Come and see, Figure 6 This is a structural schematic 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 fault identification method of the engine mount system as described above is implemented.

[0062] As a preferred embodiment, the electronic device 600 further includes a display 603 for displaying the processor 601 executing the engine mount system fault identification method as described above.

[0063] Exemplarily, the computer program may be divided into one or more modules / units, one or more modules / units are stored in the memory 602, and executed by the processor 601 to complete the present invention. One or more modules / units may be a series of computer program instruction segments that can complete 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, the acquisition module 502, and the identification module 503 in the above embodiment, and the specific functions of each module are as described above, and are not repeated here one by one.

[0064] The electronic device 600 may be a desktop computer, a notebook, a PDA or a smart phone with an adjustable camera module.

[0065] Among them, the processor 601 may be an integrated circuit chip with signal processing capabilities. The above-mentioned processor 601 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The disclosed methods, steps and logic block diagrams in the embodiments of the present invention can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0066] 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 read-only memory (EEPROM), etc. The memory 602 is used to store programs, and the processor 601 executes the program after receiving an execution instruction. The process definition method disclosed in any of the above embodiments of the present invention can be applied to the processor 601, or implemented by the processor 601.

[0067] The display 603 may be an LCD display screen or an LED display screen, for example, a display screen on a vehicle-mounted device.

[0068] Understandably, Figure 6 The structure shown is only a schematic diagram of a 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.

[0069] 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 fault identification of the engine mount system according to the present invention, and has similar beneficial effects as the method for fault identification of the engine mount system, which will not be described in detail here.

[0070] An embodiment of the present invention further provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the fault identification method of the engine mount system as described above is implemented.

[0071] Generally speaking, the computer instructions for implementing the method of the present invention can be carried by any combination of one or more computer-readable storage media. Non-transitory computer-readable storage media can include any computer-readable media except the signal itself that is temporarily propagating.

[0072] Computer-readable storage media may be, for example, but not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatuses, or devices, or any combination thereof. More specific examples of computer-readable storage media (a non-exhaustive list) include: an electrical connection having one or more conductors, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an 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 contains or stores a program that may be used by or in conjunction with an instruction execution system, apparatus, or device.

[0073] Computer program codes for performing the operations of the present invention may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages, such as Java, Smalltalk, C++, and conventional procedural programming languages, such as "C" or similar programming languages, in particular, Python suitable for neural network computing and platform frameworks based on TensorFlow, PyTorch, etc. may be used. The program code may be executed entirely on the user's computer, partially on the user's computer, as an independent 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 may 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 may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0074] Those skilled in the art will appreciate that all or part of the processes of the above-mentioned embodiments can be implemented by instructing related hardware through a computer program, and the program can be stored in a computer-readable storage medium, wherein the computer-readable storage medium is a disk, an optical disk, a read-only storage memory, or a random access memory, etc.

[0075] The present invention discloses a method and device for identifying faults of an engine suspension system. Firstly, the current working condition of the vehicle is determined by the current road spectrum information of the vehicle. Then, the faults of the engine suspension system are identified in combination with the current working condition of the vehicle and the load information of the engine suspension system. While realizing the identification of suspension system faults under the running state of the vehicle, the influence of the working condition on the identification process is taken into account, thereby improving the accuracy of the identification of suspension system faults. While realizing the identification of engine suspension system faults, the present invention improves the flexibility of the fault identification process and improves the accuracy of fault identification.

[0076] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A method for identifying a fault of an engine mounting system, characterized in that: include: Determine the current working condition of the vehicle based on the current road spectrum information of the vehicle; Acquiring load information of the engine mounting system, wherein the load information includes a force value of a mounting cushion, a displacement value of the mounting cushion, and a mounting vibration acceleration value; Based on the current operating condition of the vehicle and the load information, fault identification is performed on the engine mount system.

2. The fault identification method of the engine mounting system according to claim 1, characterized in that: The performing fault identification on the engine mounting system based on the current working condition of the vehicle and the load information includes: Determining a first recognition result based on the current working 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; Fault identification is performed on the engine mount system based on the first identification result and the second identification result.

3. The fault identification method of the engine mounting system according to claim 2, characterized in that: The determining of the first recognition result based on the current working 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 working condition of the vehicle and a force value of the suspension cushion.

4. The fault identification method of the engine mounting system according to claim 3, characterized in that: The determining the first recognition result based on the suspension cushion force threshold corresponding to the current working condition of the vehicle and the force value of the suspension cushion includes: 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 that the first recognition result is that the suspension cushion does not meet the requirement; 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, it is determined that the first recognition result is that the suspension cushion meets the requirement.

5. The fault identification method of the engine mounting system according to claim 4, characterized in that: The determining of the second recognition result based on the displacement value of the suspension cushion and the suspension vibration acceleration value comprises: 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 that the second recognition result is that the suspension is unreliable; 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, it is determined that the second recognition result is that the suspension is reliable.

6. The fault identification method of the engine mounting system according to claim 5, characterized in that: The performing fault identification on the engine mount system based on the first identification result and the second identification result includes: 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 reliable, determining that there is no fault in the engine suspension system; When 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 suspension system; 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, the first recognition result is re-determined after a preset time interval, and fault identification is performed on the engine suspension system based on the re-determined first recognition 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 suspension system based on the current operating condition of the vehicle.

7. The fault identification method of the engine mounting system according to claim 6, characterized in that: The performing fault identification on the engine mount system based on the re-determined first identification result includes: When the first identification result re-determined is that the suspension cushion meets the requirement, determining that there is no fault in the engine suspension system; When the re-determined first identification result is that the suspension cushion does not meet the requirement, it is determined that there is a fault in the engine suspension system.

8. The fault identification method of the engine mounting system according to claim 6, characterized in that: The performing fault identification on the engine mount system based on the current working 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; When 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 is determined that the engine suspension system has a fault; 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 suspension system.

9. The fault identification method of the engine mounting system according to any one of claims 1 to 8, characterized in that: The determining of the current working condition of the vehicle based on the current road spectrum information of the vehicle includes: Determine the current gearbox 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.

10. A fault identification device for an engine mounting system, characterized in that: include: A determination module, used to determine the current working condition of the vehicle based on the current road spectrum information of the vehicle; An acquisition module, used to acquire load information of the engine mounting system, wherein the load information includes a force value of a mounting cushion, a displacement value of the mounting cushion, and a mounting vibration acceleration value; An identification module is used to identify faults of the engine mounting system based on the current working condition of the vehicle and the load information.

Images