Supercharger diagnosis method and device, electronic equipment and storage medium

Abstract

Embodiments of the present application disclose a supercharger diagnosis method and device, electronic equipment and a storage medium. The method comprises: injecting an actual supercharging pressure value of an engine supercharger at at least one supercharging working condition point in a vehicle real-time simulation subsystem, wherein the vehicle real-time simulation subsystem is arranged in a whole vehicle virtual diagnosis calibration system comprising a supercharging fault diagnosis subsystem; for each supercharging working condition point, determining a target supercharging pressure value of the supercharging working condition point configured in the supercharging fault diagnosis subsystem, and calculating a supercharging pressure deviation of the target supercharging pressure value and the actual supercharging pressure value of the supercharging working condition point; and determining a diagnosis result of the engine supercharger at the supercharging working condition point according to the supercharging pressure deviation. The technical scheme of the embodiments of the present application realizes relatively convenient and effective diagnosis of the engine supercharger, reduces the occupation of manpower and material resources, and reduces diagnosis cost and shortens the diagnosis cycle.

Description

Technical Field

[0001] The present invention relates to the field of engine control technology, and in particular to a turbocharger diagnostic method, device, electronic device and storage medium. Background Technology

[0002] Engine turbochargers primarily increase the intake air density of an engine by compressing air, thereby increasing the engine's power output per unit volume. This improves the engine's air-fuel mixture regulation, enhances combustion efficiency, and ultimately saves fuel and reduces emissions. Therefore, engine turbochargers have been widely adopted.

[0003] In related technologies, engine turbochargers are typically diagnosed through real-vehicle testing. However, real-vehicle testing conditions are often quite stringent. For example, vehicles need to be tested in various extreme environments. This diagnostic method not only requires significant manpower and resources but also presents technical challenges such as high costs and long diagnostic cycles. Summary of the Invention

[0004] This invention provides a turbocharger diagnostic method, device, electronic equipment, and storage medium to achieve a more convenient and effective diagnosis of engine turbochargers, which not only reduces the occupation of manpower and material resources, but also reduces diagnostic costs and shortens the diagnostic cycle.

[0005] According to one aspect of the present invention, a turbocharger diagnostic method is provided, the method comprising:

[0006] The actual boost pressure value of the engine turbocharger at at least one boost operating point is injected into the vehicle real-time simulation subsystem, wherein the vehicle real-time simulation subsystem is set in the vehicle virtual diagnostic calibration system that includes a boost fault diagnosis subsystem;

[0007] For each boosting operating point, determine the target boosting pressure value configured in the boosting fault diagnosis subsystem for the boosting operating point, and calculate the boosting pressure deviation between the target boosting pressure value and the actual boosting pressure value of the boosting operating point.

[0008] Based on the boost pressure deviation, the diagnostic result of the engine turbocharger at the boost operating point is determined.

[0009] According to another aspect of the present invention, a turbocharger diagnostic device is provided. The device includes:

[0010] The pressure value injection module is used to inject the actual boost pressure value of the engine turbocharger at at least one boost operating point into the vehicle real-time simulation subsystem, wherein the vehicle real-time simulation subsystem is set in the vehicle virtual diagnostic calibration system that includes a boost fault diagnosis subsystem.

[0011] The boost deviation calculation module is used to determine the target boost pressure value configured in the boost fault diagnosis subsystem for each boost operating point, and to calculate the boost pressure deviation between the target boost pressure value and the actual boost pressure value of the boost operating point.

[0012] The diagnostic result acquisition module is used to determine the diagnostic result of the engine turbocharger at the boost pressure point based on the boost pressure deviation.

[0013] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0014] At least one processor; and

[0015] A memory communicatively connected to the at least one processor; wherein,

[0016] The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the turbocharger diagnostic method according to any embodiment of the present invention.

[0017] According to another aspect of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium storing computer instructions for causing a processor to execute and implement the turbocharger diagnostic method according to any embodiment of the present invention.

[0018] The technical solution of this invention, by injecting the actual boost pressure value of the engine turbocharger at at least one boost operating point into the vehicle real-time simulation subsystem, wherein the vehicle real-time simulation subsystem is set in a vehicle virtual diagnostic calibration system including a boost fault diagnosis subsystem; for each boost operating point, a target boost pressure value configured in the boost fault diagnosis subsystem is determined, and the boost pressure deviation between the target boost pressure value and the actual boost pressure value of the boost operating point is calculated; based on the boost pressure deviation, the diagnostic result of the engine turbocharger at the boost operating point is determined. This technical solution of the present invention achieves a more convenient and effective diagnosis of the engine turbocharger, reducing manpower and material resources, lowering diagnostic costs, and shortening the diagnostic cycle.

[0019] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a flowchart illustrating a turbocharger diagnostic method provided in Embodiment 1 of the present invention;

[0022] Figure 2 This is a schematic diagram of the vehicle virtual diagnostic calibration system for a turbocharger diagnostic method provided in Embodiment 1 of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of a turbocharger diagnostic device provided in Embodiment 2 of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of an electronic device provided in Embodiment 3 of the present invention. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0026] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0027] It is understood that the data involved in this technical solution (including but not limited to the data itself, the acquisition or use of the data) shall comply with the requirements of relevant laws, regulations and related provisions.

[0028] Example 1

[0029] Figure 1 This is a flowchart illustrating a turbocharger diagnostic method provided in Embodiment 1 of the present invention. This embodiment is applicable to the diagnosis of engine turbochargers. The method can be executed by a turbocharger diagnostic device, which can be implemented in hardware and / or software. The turbocharger diagnostic device can be configured in an electronic device such as a computer or server.

[0030] like Figure 1 As shown, the method in this embodiment includes:

[0031] S110. Inject the actual boost pressure value of the engine turbocharger at at least one boost operating point into the vehicle real-time simulation subsystem. The vehicle real-time simulation subsystem is set in the whole vehicle virtual diagnostic calibration system that includes a boost fault diagnosis subsystem.

[0032] The boost pressure point can be the operating parameters of the engine turbocharger under specific speed and load conditions. The actual boost pressure value can be understood as the boost pressure value obtained after the engine turbocharger operates according to the boost pressure point.

[0033] Specifically, the actual boost pressure value of the engine turbocharger at at least one boost operating point is obtained. This obtained actual boost pressure value can then be injected into the vehicle real-time simulation subsystem of the vehicle virtual diagnostic calibration system.

[0034] In this embodiment of the invention, before injecting the actual boost pressure value of the engine turbocharger at at least one boost operating point into the vehicle real-time simulation subsystem, the method further includes: controlling the engine turbocharger to operate according to the operating parameters of each boost operating point, and obtaining the actual boost pressure value of the engine turbocharger at each boost operating point.

[0035] The operating parameters can be understood as pre-set test parameters for the engine turbocharger. These parameters may include engine speed and load. For example, the operating parameters for the turbocharger operating point are shown in Table 1:

[0036]

[0037] Optionally, controlling the engine turbocharger to operate according to the operating parameters of each turbocharger operating point to obtain the actual turbocharger pressure value at each turbocharger operating point may include: controlling the engine turbocharger to operate according to the operating parameters of each turbocharger operating point, and collecting the actual turbocharger pressure value at each turbocharger operating point by calling the data acquisition subsystem of the vehicle virtual diagnostic calibration system.

[0038] Specifically, the engine turbocharger is scanned according to each boosting operating point. During the scanning process, different temperature points and different altitudes can be set in the environmental chamber for each boosting operating point, and temperature compensation corrections are performed for different temperature points and atmospheric pressure compensation corrections are performed for different altitudes.

[0039] In this embodiment of the invention, the vehicle virtual diagnostic calibration system can be a system built in simulation software based on the vehicle's system configuration. The vehicle virtual diagnostic calibration system may include a vehicle real-time simulation subsystem (…). Figure 2 The vehicle real-time simulation system HIL and the booster fault diagnosis subsystem (in the system) Figure 2 The automatic testing software for models / signals and the data acquisition subsystem (in the system) Figure 2 (Calibration software in the system). The vehicle real-time simulation subsystem can be a closed-loop system composed of multiple engine system controllers connected to a real-time simulation model via hardware-in-the-loop configuration. The turbocharger fault diagnosis subsystem can be understood as a subsystem used to diagnose the vehicle real-time simulation subsystem. The data acquisition subsystem can be understood as a subsystem used to collect fault diagnosis data obtained after diagnosing the vehicle real-time simulation subsystem.

[0040] In this embodiment of the invention, the vehicle real-time simulation subsystem may include, but is not limited to, an engine module, a vehicle module, a transmission system, a cooling module, an environmental correction module, and an after-processing module. The engine module may be a module composed of a one-dimensional engine model. For example, the engine module may include, but is not limited to, cylinders of the engine body model, torque of the engine body model, friction of the engine body model, intercooler of the air circuit model, turbocharger of the air circuit model, high and low rail pressure of the fuel circuit model, and injectors of the fuel circuit model. The engine module can reflect detailed changes in parameters such as engine speed, load, air-fuel ratio, ignition angle, VVT, coolant temperature, intake and exhaust temperatures, and atmospheric pressure in real time during the engine process. The vehicle module can be understood as a simplified model of the vehicle's electrical accessories and other subsystems. The transmission system can be understood as a simple simulation model of the gearbox. The cooling module may include one and two coolant temperature units. The environmental correction module may include an intake air temperature unit and an atmospheric pressure correction unit. The after-processing module may include, but is not limited to, an exhaust unit and a tailpipe unit. Furthermore, the vehicle virtual diagnostic calibration system may also include an engine ECU controller (…). Figure 2 The ECU and signal measurement and conversion control module are included.

[0041] S120. For each boosting operating point, determine the target boosting pressure value configured in the boosting fault diagnosis subsystem for the boosting operating point, and calculate the boosting pressure deviation between the target boosting pressure value and the actual boosting pressure value of the boosting operating point.

[0042] The target boost pressure value can be understood as the boost pressure value pre-configured for each boost operating point in the boost fault diagnosis subsystem. The boost pressure deviation can be calculated based on the target boost pressure value and the actual boost pressure value at the boost operating point.

[0043] Specifically, for each boost operating point, the target boost pressure value configured in the boost fault diagnosis subsystem can be determined. The actual boost pressure value for that boost operating point can also be determined. After determining the target and actual boost pressure values ​​for each boost operating point, the difference between them can be calculated to obtain the difference calculation result. This difference calculation result can then be used as the boost pressure deviation of the engine turbocharger at that boost operating point.

[0044] In this embodiment of the invention, the method for obtaining the target boost pressure value configured for the boost operating point in the boost fault diagnosis subsystem may specifically include: obtaining the diagnostic boost pressure value of the engine turbocharger at each boost operating point; injecting each of the diagnostic boost pressure values ​​into the boost fault diagnosis subsystem to obtain the actual diagnostic result of each of the diagnostic boost pressure values; and adjusting the initial boost pressure value of each boost operating point in the boost fault diagnosis subsystem based on each of the diagnostic boost pressure values ​​and the actual diagnostic result of each of the diagnostic boost pressure values ​​to obtain the target boost pressure value configured for each of the boost operating points in the boost fault diagnosis subsystem.

[0045] The diagnostic boost pressure value can be the boost pressure value obtained after the engine turbocharger operates under the operating parameters of various preset boost operating points. The operating parameters of the preset boost operating points can be set according to actual needs and are not specifically limited here. The actual diagnostic result can be the diagnostic result obtained after injecting the diagnostic boost pressure value into the boost fault diagnosis subsystem. The initial boost pressure value can be understood as the original boost pressure value set for the boost operating point in the boost fault diagnosis subsystem. Optionally, the initial boost pressure value can be the default boost pressure value. The initial boost pressure values ​​for different boost operating points can be the same or different.

[0046] In this embodiment of the invention, adjusting the initial boost pressure value of each boost operating point in the boost fault diagnosis subsystem based on the diagnostic boost pressure values ​​and the actual diagnostic results of each diagnostic boost pressure value may include: for each boost operating point, determining the expected diagnostic result and the actual diagnostic result of the diagnostic boost pressure value at that boost operating point; then comparing the expected diagnostic result and the actual diagnostic result for consistency; if the comparison is inconsistent, the initial boost pressure value of the boost operating point in the boost fault diagnosis subsystem may be adjusted. It is understood that if the comparison is consistent, it indicates that no adjustment of the initial boost pressure value of the boost operating point in the boost fault diagnosis subsystem is required. The expected diagnostic result can be understood as the theoretically obtainable diagnostic result after diagnosing the diagnostic boost pressure value of the engine turbocharger at the boost operating point.

[0047] S130. Based on the boost pressure deviation, determine the diagnostic result of the engine turbocharger at the boost operating point.

[0048] The diagnostic result can be obtained by diagnosing the engine turbocharger at the boost pressure operating point based on the boost pressure deviation. In this embodiment of the invention, determining the diagnostic result of the engine turbocharger at the boost pressure operating point based on the boost pressure deviation can include: if the boost pressure deviation is greater than a preset upper threshold, a first diagnostic result of excessive boost pressure of the engine turbocharger at the boost pressure operating point can be generated; if the boost pressure deviation is less than a preset lower threshold, a second diagnostic result of excessive boost pressure of the engine turbocharger at the boost pressure operating point can be generated; if the boost pressure deviation is neither greater than the preset upper threshold nor less than the preset lower threshold, a third diagnostic result of normal boost pressure of the engine turbocharger at the boost pressure operating point can be generated.

[0049] The preset upper threshold can be understood as the upper limit of the boost pressure deviation. The preset lower threshold can be understood as the lower limit of the boost pressure deviation. In this embodiment of the invention, the preset upper and lower thresholds are dynamically adjusted according to actual needs. The first diagnostic result indicates that the boost pressure of the engine turbocharger at the boost operating point is too high. The second diagnostic result indicates that the boost pressure of the engine turbocharger at the boost operating point is too low. The third diagnostic result indicates that the boost pressure of the engine turbocharger at the boost operating point is normal.

[0050] Based on the above embodiments, the method may further include: repairing a boosting fault in the engine turbocharger at the boosting operating point. Specifically, repairing a boosting fault in the engine turbocharger at the boosting operating point may include: automatically repairing the boosting fault in the engine turbocharger at the boosting operating point by invoking a preset fault repair module.

[0051] Based on the above embodiments, the method further includes: acquiring all diagnostic results of the engine turbocharger at each of the turbocharging operating points, wherein the all diagnostic results may include normal diagnostic results and abnormal diagnostic results. The normal diagnostic results may be the third diagnostic result, and the abnormal diagnostic results may include the first diagnostic result and / or the second diagnostic result; if the distribution of the normal diagnostic results and the abnormal diagnostic results is normally distributed, then turbocharger diagnostic data of the engine turbocharger can be acquired for real-vehicle verification based on the turbocharger diagnostic data. The turbocharger diagnostic data may be data used to diagnose the engine turbocharger. For example, the turbocharger diagnostic data may include parameters set in the vehicle real-time simulation subsystem. In this embodiment of the invention, real-vehicle verification based on the turbocharger diagnostic data can achieve fault robustness verification. The criterion for determining that the distribution of the normal diagnostic results and the abnormal diagnostic results is normally distributed can be the 3σ rule of normal distribution.

[0052] The technical solution of this invention, by injecting the actual boost pressure value of the engine turbocharger at at least one boost operating point into the vehicle real-time simulation subsystem, wherein the vehicle real-time simulation subsystem is set in a vehicle virtual diagnostic calibration system including a boost fault diagnosis subsystem; for each boost operating point, a target boost pressure value configured in the boost fault diagnosis subsystem is determined, and the boost pressure deviation between the target boost pressure value and the actual boost pressure value of the boost operating point is calculated; based on the boost pressure deviation, the diagnostic result of the engine turbocharger at the boost operating point is determined. This technical solution of the present invention achieves a more convenient and effective diagnosis of the engine turbocharger, reducing manpower and material resources, lowering diagnostic costs, and shortening the diagnostic cycle.

[0053] Example 2

[0054] Figure 3 This is a schematic diagram of a turbocharger diagnostic device provided in Embodiment 2 of the present invention. Figure 3 As shown, the device includes: a pressure value injection module 210, a pressure deviation calculation module 220, and a diagnostic result acquisition module 230.

[0055] The pressure value injection module 210 is used to inject the actual boost pressure value of the engine turbocharger at at least one boost condition point into the vehicle real-time simulation subsystem. The vehicle real-time simulation subsystem is set in the whole vehicle virtual diagnostic calibration system that includes a boost fault diagnosis subsystem.

[0056] The boost deviation calculation module 220 is used to determine the target boost pressure value configured in the boost fault diagnosis subsystem for each boost operating point, and to calculate the boost pressure deviation between the target boost pressure value and the actual boost pressure value of the boost operating point.

[0057] The diagnostic result acquisition module 230 is used to determine the diagnostic result of the engine turbocharger at the boost pressure point based on the boost pressure deviation.

[0058] The technical solution of this invention, by injecting the actual boost pressure value of the engine turbocharger at at least one boost operating point into the vehicle real-time simulation subsystem, wherein the vehicle real-time simulation subsystem is set in a vehicle virtual diagnostic calibration system including a boost fault diagnosis subsystem; for each boost operating point, a target boost pressure value configured in the boost fault diagnosis subsystem is determined, and the boost pressure deviation between the target boost pressure value and the actual boost pressure value of the boost operating point is calculated; based on the boost pressure deviation, the diagnostic result of the engine turbocharger at the boost operating point is determined. This technical solution of the present invention achieves a more convenient and effective diagnosis of the engine turbocharger, reducing manpower and material resources, lowering diagnostic costs, and shortening the diagnostic cycle.

[0059] Optionally, the diagnostic results receiving module 230 is used for:

[0060] If the boost pressure deviation is greater than a preset upper limit threshold, a first diagnostic result is generated that the boost pressure of the engine turbocharger is too high at the boost operating point;

[0061] If the boost pressure deviation is less than a preset lower threshold, a second diagnostic result is generated indicating that the boost pressure of the engine turbocharger is too low at the boost operating point.

[0062] If the boost pressure deviation is not greater than a preset upper limit threshold and the boost pressure deviation is not less than a preset lower limit threshold, then a third diagnostic result is generated indicating that the boost pressure of the engine turbocharger is normal at the boost operating point.

[0063] Optionally, the device further includes an actual pressure value acquisition module; wherein, the actual pressure value acquisition module is used for:

[0064] Before injecting the actual boost pressure value of the engine turbocharger at at least one boost condition point into the vehicle real-time simulation subsystem, the engine turbocharger is controlled to operate according to the operating parameters of each boost condition point to obtain the actual boost pressure value of the engine turbocharger at each boost condition point.

[0065] Optionally, the actual pressure value acquisition module is specifically used for:

[0066] The engine turbocharger is controlled to operate according to the operating parameters of each boosting point, and the actual boost pressure value of the engine turbocharger at each boosting point is collected by calling the data acquisition subsystem of the vehicle virtual diagnostic calibration system.

[0067] Optionally, the device further includes a target pressure value acquisition module; wherein the target pressure value acquisition module is used for:

[0068] The diagnostic boost pressure values ​​of the engine turbocharger at each boost operating point are obtained, and each of the diagnostic boost pressure values ​​is injected into the boost fault diagnosis subsystem to obtain the actual diagnostic results of each of the diagnostic boost pressure values.

[0069] Based on the diagnostic boost pressure values ​​and the actual diagnostic results of the diagnostic boost pressure values, the initial boost pressure values ​​of each boost operating point in the boost fault diagnosis subsystem are adjusted to obtain the target boost pressure values ​​configured for each boost operating point in the boost fault diagnosis subsystem.

[0070] Optionally, the device further includes a fault repair module; wherein the fault repair module is used for:

[0071] Repair the boosting failure of the engine turbocharger at the boosting operating point.

[0072] Optionally, the device further includes a turbocharger diagnostic data acquisition module; wherein the turbocharger diagnostic data is used for:

[0073] Obtain all diagnostic results of the engine turbocharger at each of the turbocharging operating points, wherein all diagnostic results include normal diagnostic results and abnormal diagnostic results, the normal diagnostic results are the third diagnostic results, and the abnormal diagnostic results include the first diagnostic results and / or the second diagnostic results;

[0074] If the distribution of the normal diagnostic results and the abnormal diagnostic results follows a normal distribution, then the turbocharger diagnostic data of the engine turbocharger is obtained, and real-vehicle verification is performed based on the turbocharger diagnostic data.

[0075] The turbocharger diagnostic device provided in this embodiment of the invention can execute the turbocharger diagnostic method provided in any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the method.

[0076] It is worth noting that the various units and modules included in the above-mentioned turbocharger diagnostic device are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be achieved; in addition, the specific names of each functional unit are only for easy differentiation and are not used to limit the protection scope of the embodiments of the present invention.

[0077] Example 3

[0078] Figure 4 A schematic diagram of an electronic device 10 that can be used to implement embodiments of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0079] like Figure 4 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 may also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0080] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0081] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as booster diagnostic methods.

[0082] In some embodiments, the turbocharger diagnostic method may be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the turbocharger diagnostic method described above may be performed. Alternatively, in other embodiments, processor 11 may be configured to perform the turbocharger diagnostic method by any other suitable means (e.g., by means of firmware).

[0083] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0084] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0085] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0086] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0087] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0088] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0089] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0090] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for diagnosing a turbocharger, characterized in that, The method includes: The actual boost pressure value of the engine turbocharger at at least one boost operating point is injected into the vehicle real-time simulation subsystem. The vehicle real-time simulation subsystem is set in the whole vehicle virtual diagnostic calibration system that includes a boost fault diagnosis subsystem. The vehicle real-time simulation subsystem includes an engine module, a whole vehicle module, a transmission system, a cooling module, an environmental correction module, and an after-processing module. For each boosting operating point, determine the target boosting pressure value configured in the boosting fault diagnosis subsystem for the boosting operating point, and calculate the boosting pressure deviation between the target boosting pressure value and the actual boosting pressure value of the boosting operating point. Based on the boost pressure deviation, determine the diagnostic result of the engine turbocharger at the boost operating point; The step of determining the diagnostic result of the engine turbocharger at the boost pressure point based on the boost pressure deviation includes: If the boost pressure deviation is greater than a preset upper limit threshold, a first diagnostic result is generated that the boost pressure of the engine turbocharger is too high at the boost operating point; If the boost pressure deviation is less than a preset lower threshold, a second diagnostic result is generated indicating that the boost pressure of the engine turbocharger is too low at the boost operating point. If the boost pressure deviation is not greater than a preset upper limit threshold and the boost pressure deviation is not less than a preset lower limit threshold, then a third diagnostic result is generated indicating that the boost pressure of the engine turbocharger is normal at the boost operating point. The method further includes: Obtain all diagnostic results of the engine turbocharger at each of the turbocharging operating points, wherein all diagnostic results include normal diagnostic results and abnormal diagnostic results, the normal diagnostic results are the third diagnostic results, and the abnormal diagnostic results include the first diagnostic results and / or the second diagnostic results; If the distribution of the normal diagnostic results and the abnormal diagnostic results follows a normal distribution, then the turbocharger diagnostic data of the engine turbocharger is obtained, and real-vehicle verification is performed based on the turbocharger diagnostic data.

2. The method according to claim 1, characterized in that, The method further includes injecting the actual boost pressure value of the engine turbocharger at at least one boost point into the vehicle real-time simulation subsystem: The engine turbocharger is controlled to operate according to the operating parameters of each turbocharger operating point, and the actual boost pressure value of the engine turbocharger at each turbocharger operating point is obtained.

3. The method according to claim 2, characterized in that, The control engine turbocharger operates according to the operating parameters at each turbocharger operating point, obtaining the actual boost pressure value of the engine turbocharger at each turbocharger operating point, including: The engine turbocharger is controlled to operate according to the operating parameters of each boosting point, and the actual boost pressure value of the engine turbocharger at each boosting point is collected by calling the data acquisition subsystem of the vehicle virtual diagnostic calibration system.

4. The method according to claim 1, characterized in that, The method further includes: The diagnostic boost pressure values ​​of the engine turbocharger at each boost operating point are obtained, and each of the diagnostic boost pressure values ​​is injected into the boost fault diagnosis subsystem to obtain the actual diagnostic results of each of the diagnostic boost pressure values. Based on the diagnostic boost pressure values ​​and the actual diagnostic results of the diagnostic boost pressure values, the initial boost pressure values ​​of each boost operating point in the boost fault diagnosis subsystem are adjusted to obtain the target boost pressure values ​​configured for each boost operating point in the boost fault diagnosis subsystem.

5. The method according to claim 1, characterized in that, The method further includes: Repair the boosting failure of the engine turbocharger at the boosting operating point.

6. A turbocharger diagnostic device, characterized in that, The device includes: The pressure value injection module is used to inject the actual boost pressure value of the engine turbocharger at at least one boost operating point into the vehicle real-time simulation subsystem, wherein the vehicle real-time simulation subsystem is set in the whole vehicle virtual diagnostic calibration system including the boost fault diagnosis subsystem; The boost deviation calculation module is used to determine the target boost pressure value configured in the boost fault diagnosis subsystem for each boost operating point, and to calculate the boost pressure deviation between the target boost pressure value and the actual boost pressure value of the boost operating point. The diagnostic result acquisition module is used to determine the diagnostic result of the engine turbocharger at the turbocharger operating point based on the boost pressure deviation. The vehicle real-time simulation subsystem includes an engine module, a vehicle module, a transmission system, a cooling module, an environmental correction module, and an after-processing module. The diagnostic result acquisition module is specifically used for: If the boost pressure deviation is greater than a preset upper limit threshold, a first diagnostic result is generated that the boost pressure of the engine turbocharger is too high at the boost operating point; If the boost pressure deviation is less than a preset lower threshold, a second diagnostic result is generated indicating that the boost pressure of the engine turbocharger is too low at the boost operating point. If the boost pressure deviation is not greater than a preset upper limit threshold and the boost pressure deviation is not less than a preset lower limit threshold, then a third diagnostic result is generated indicating that the boost pressure of the engine turbocharger is normal at the boost operating point. The device further includes: The turbocharger diagnostic data acquisition module is used to acquire all diagnostic results of the engine turbocharger at each turbocharging operating point. The total diagnostic results include normal diagnostic results and abnormal diagnostic results. The normal diagnostic results are the third diagnostic results, and the abnormal diagnostic results include the first diagnostic results and / or the second diagnostic results. If the distribution of the normal diagnostic results and the abnormal diagnostic results is normally distributed, the turbocharger diagnostic data of the engine turbocharger is acquired, and real-vehicle verification is performed based on the turbocharger diagnostic data.

7. An electronic device, characterized in that, The electronic device includes: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the turbocharger diagnostic method according to any one of claims 1-5.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that cause a processor to execute the turbocharger diagnostic method according to any one of claims 1-5.

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