Method, device and equipment for diagnosing sealing performance of pressure release valve supercharger and medium

Abstract

The invention discloses a sealing diagnosis method, device and equipment for a pressure release valve supercharger and a medium, and relates to the technical field of sealing detection, and the method comprises the following steps: controlling the opening and closing of the pressure release valve supercharger, and recording the pressure of the pressure release valve supercharger in an opening state and a closing state; judging whether the pressure difference of the pressure release valve superchargers in the opening state and the closing state is larger than a preset pressure difference threshold value or not; if yes, it is determined that the pressure release valve supercharger does not leak; and if not, determining that the pressure release valve supercharger leaks. Whether leakage exists or not is judged by directly measuring the pressure when the pressure release valve is opened or closed, a pipeline in the pressure release valve is prevented from being in a high-load state for a long time, a supercharger is prevented from being in an overspeed state for a long time, and safety and user experience in the diagnosis process are improved.

Description

Technical Field

[0001] This invention relates to the field of sealing performance testing technology, and in particular to a method, apparatus, equipment, and medium for diagnosing the sealing performance of a pressure relief valve booster. Background Technology

[0002] As a crucial component for increasing intake airflow and engine power, the turbocharger's performance directly determines a vehicle's power output, fuel economy, and emissions levels. The stability of turbocharger capacity not only affects acceleration response and high-speed performance but is also closely related to the engine's long-term reliability. The wastegate provides the engine with a wider adjustable range, allowing the vehicle to flexibly optimize power output, match different driving conditions, and effectively manage exhaust temperature. However, if there is leakage in the seal between the turbocharger and the wastegate, it will directly lead to the failure of the system control logic: in a leaking state, the turbocharger will continuously operate at overspeed, not only accelerating turbocharger bearing wear and causing overspeed failure risks but also potentially leading to serious consequences such as unexpected vehicle breakdown, excessive emissions, and a sharp drop in fuel economy.

[0003] Currently, testing the sealing performance of turbochargers and pressure relief valves requires increasing the gas pressure under high load, putting the pressure relief valve and turbocharger in an overspeed, high-pressure state, which increases the possibility of component damage. Therefore, there is an urgent need for a control logic that can diagnose pipeline leaks in real time during normal vehicle operation without high load operation, in order to avoid the high risks and inefficiencies of traditional methods and ensure the safe and reliable operation of the turbocharging system. Summary of the Invention

[0004] This invention provides a method, apparatus, equipment, and medium for diagnosing the sealing performance of a pressure relief valve booster, in order to solve the technical problem in the related art where testing the sealing performance of a pressure relief valve booster requires high-load pressurization, which may lead to component damage or reduced component life.

[0005] Firstly, a method for diagnosing the sealing performance of a pressure relief valve booster is provided, comprising the following steps: Control the opening and closing of the pressure relief valve booster and record the pressure at the inlet and outlet of the pressure relief valve booster in the open and closed states; Determine whether the pressure difference between the pressure relief valve and the booster in the open and closed states is greater than a preset pressure difference threshold. If yes, then the pressure relief valve booster is confirmed to be leak-free; if no, then the pressure relief valve booster is confirmed to be leaking.

[0006] In some embodiments, before controlling the opening and closing of the pressure relief valve booster and recording the opening and closing states, the method further includes: The system acquires vehicle operating parameters and preset diagnostic conditions. When the vehicle operating parameters are within the preset threshold range and the preset diagnostic conditions are met, the system controls the actuator to reach the required preset position.

[0007] In some embodiments, the vehicle operating parameters and preset diagnostic conditions include: The vehicle operating parameters include: vehicle speed, vehicle gas cylinder pressure, and atmospheric temperature and pressure. The preset diagnostic conditions include: engine not injecting fuel, engine powered on, brake not activated, gear set to the required gear, and engine speed and speed change rate within the preset range.

[0008] In some embodiments, the method for diagnosing the sealing performance of the pressure relief valve booster is characterized in that, when acquiring vehicle operating parameters and preset diagnostic conditions, and controlling the actuator to reach a preset position when the vehicle operating parameters are within a preset threshold range and meet the preset diagnostic conditions, the method includes: Control the actuator to move to the preset position; Determine whether the deviation between the current position and the preset position of the actuator is within a preset deviation threshold; If yes, confirm that the actuator has reached the preset position; otherwise, repeatedly control the actuator to move towards the preset position until the deviation between the current position and the preset position is within the preset deviation threshold.

[0009] In some embodiments, the method for diagnosing the sealing performance of the pressure relief valve booster is characterized by further comprising, before controlling the opening and closing of the pressure relief valve booster and recording the opening and closing states, the pressure entering and exiting the pressure relief valve booster: Determine whether the opening or closing time of the pressure relief valve booster is greater than or equal to a time threshold. If yes, proceed to the next judgment step; otherwise, do not proceed to the next judgment step.

[0010] In some embodiments, the method for diagnosing the sealing performance of the pressure relief valve booster is characterized in that: the preset time threshold is not less than 2 seconds.

[0011] In some embodiments, the method for diagnosing the sealing performance of the pressure relief valve booster is characterized in that determining whether the pressure difference between the pressure relief valve booster in the open and closed states is greater than a preset pressure difference threshold includes: For different atmospheric pressure conditions, set corresponding preset pressure difference thresholds.

[0012] Secondly, embodiments of the present invention also provide a sealing performance diagnostic device for a pressure relief valve booster, comprising: The recording unit controls the opening and closing of the pressure relief valve and records the pressure of the pressure booster in the open and closed states of the pressure relief valve. The judgment unit determines whether the pressure difference between the pressure relief valve and the pressure booster in the open and closed states is greater than a preset pressure difference threshold. Determine if: If yes, then determine that the pressure relief valve booster is not leaking; if no, then determine that the pressure relief valve booster is leaking.

[0013] Thirdly, a computer device is provided, comprising: a memory and a processor, wherein the memory stores at least one instruction, the at least one instruction being loaded and executed by the processor to implement the aforementioned method for diagnosing the sealing performance of a pressure relief valve booster.

[0014] Fourthly, a computer-readable storage medium is provided, the computer-readable storage medium storing computer instructions that, when executed by a computer, cause the computer to perform the aforementioned method for diagnosing the sealing performance of a pressure relief valve booster.

[0015] The beneficial effects of the technical solution provided by this invention include: This invention provides a method, apparatus, device, and medium for diagnosing the sealing performance of a pressure relief valve booster. First, the pressure relief valve booster is controlled to open and close, and the pressure entering and exiting the booster in both open and closed states is recorded. Then, the pressure difference between the open and closed states is compared to see if it exceeds a preset pressure difference threshold. If it does, the booster is determined to be leak-free; otherwise, it is determined to be leaking. This invention eliminates the need for the booster to operate under high load conditions for sealing testing, reducing the risk of booster damage and extending its service life. Attached Figure Description

[0016] 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.

[0017] Figure 1 A schematic flowchart illustrating a method for diagnosing the sealing performance of a pressure relief valve booster according to an embodiment of the present invention; Figure 2 A flowchart for determining diagnostic conditions provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the sealing performance diagnostic device for a pressure relief valve booster provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of a computer device provided in an embodiment of the present invention. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] This invention provides a method for diagnosing the sealing performance of a pressure relief valve booster, which solves the technical problem that testing the sealing performance of existing pressure relief valve boosters requires the booster to operate under high load, which can easily lead to damage to the booster.

[0020] See Figure 1 As shown, this embodiment of the invention provides a method for diagnosing the sealing performance of a pressure relief valve booster, comprising the following steps: Step 1: Control the pressure relief valve inflator to open and close, and record the pressure at the inlet and outlet of the pressure relief valve in the open and closed states; Step 2: Determine whether the pressure difference between the pressure relief valve and the booster in the open and closed states is greater than the preset pressure difference threshold; Step 3: If yes, then confirm that the pressure relief valve booster is not leaking; if no, then confirm that the pressure relief valve booster is leaking.

[0021] In the process of diagnosing the sealing performance of a pressure relief valve booster, this invention controls the opening and closing of the pressure relief valve booster and records the pressure entering and leaving the booster in both open and closed states. It then determines whether the pressure difference between the open and closed states exceeds a preset pressure difference threshold. If it does, the booster is confirmed to be leak-free; otherwise, it is confirmed to be leaking. This direct diagnosis and determination of pressure relief valve booster leakage under normal operating conditions avoids prolonged high-load conditions for the pressure relief valve and prolonged overspeed conditions for the booster, thus extending the booster's service life and preventing damage during the diagnostic process.

[0022] In an optional embodiment, before controlling the opening and closing of the pressure relief valve booster and recording the opening and closing states, the method further includes: The system acquires vehicle operating parameters and preset diagnostic conditions. When the vehicle operating parameters are within the preset threshold range and the preset diagnostic conditions are met, the system controls the actuator to reach the required preset position. The actuators include the actuators of components such as EGR, throttle valve, and pressure relief valve of the turbocharger. The actuators are brought to a preset position for diagnostic purposes by ECU commands, and the position change of the actuators in the process of reaching the preset position needs to be smooth.

[0023] Once the actuator reaches the preset position, the detection begins to ensure the accuracy of the detection results. The actuator transitions smoothly to avoid additional vibrations during the actuator movement and pressure fluctuations in the intake manifold of the pressure relief valve booster, thus preventing any impact on the diagnostic results.

[0024] In an optional embodiment, see Figure 2 As shown, the vehicle operating parameters and preset diagnostic conditions include: The vehicle operating parameters include: vehicle speed, vehicle gas cylinder pressure, and atmospheric temperature and pressure. The preset diagnostic conditions include: engine not injecting fuel, engine powered on, brake not activated, gear set to the required gear, no related faults, and engine speed and speed change rate within the preset range. The following faults were found to be absent: the pressure status of the pressure relief valve and the inlet pipe of the booster was fault-free; the temperature and pressure of the pressure relief valve and the booster were fault-free when there was no air intake; and other related electrical components and their performance were fault-free.

[0025] When the vehicle is running within the preset range, it is in a relatively stable state, and the test results are also relatively stable. The engine speed is related to the vehicle gear and speed. Within the same speed fluctuation range, the higher the gear, the smaller the engine speed change, the more stable the engine state, and the more stable the test results.

[0026] In an optional embodiment, the method for diagnosing the sealing performance of the pressure relief valve booster is characterized in that, the step of acquiring vehicle operating parameters and preset diagnostic conditions, and controlling the actuator to reach a preset position when the vehicle operating parameters are within a preset threshold range and meet the preset diagnostic conditions, includes: Control the actuator to move to the preset position; Determine whether the deviation between the current position and the preset position of the actuator is within a preset deviation threshold. The deviation threshold is set to any value less than 2%. If the deviation is within the preset deviation threshold, the actuator is determined to have reached the preset position, and fault diagnosis begins; if the deviation is not within the preset deviation threshold, the actuator is repeatedly controlled to move towards the preset position until the deviation between the current position and the preset position is within the preset deviation threshold, and then fault diagnosis is performed.

[0027] By precisely controlling the actual feedback position of the actuator during the diagnostic process, the diagnostic tool is prevented from taking measurements directly when the pressure is not stable, thus ensuring the stability of the operating conditions and preventing measurement deviations caused by actuator position deviations.

[0028] In an optional embodiment, the method for diagnosing the sealing performance of the pressure relief valve booster is characterized in that, before controlling the opening and closing of the pressure relief valve booster and recording the opening and closing states, it further includes: Determine whether the opening or closing time of the pressure relief valve booster is greater than or equal to a time threshold. If yes, proceed to the next judgment step; otherwise, do not proceed to the next judgment step.

[0029] When the duration of opening or closing of the pressure relief valve booster is less than the preset time threshold, the stability of the operating condition is insufficient and the number of times the fault diagnosis calculation process is entered is too high. The increase in the number of times the actuator is controlled leads to a reduction in the lifespan of the actuator. Setting a time threshold can improve the robustness of fault diagnosis and the lifespan of the system. In an optional embodiment, the method for diagnosing the sealing performance of the pressure relief valve booster is characterized in that: the preset time threshold is not less than 2 seconds.

[0030] Setting the preset time threshold to 2 seconds ensures stable diagnostic conditions while preventing the inability to perform diagnostics due to excessively short opening and closing times of the pressure relief valve and booster caused by complex road conditions and unstable driving processes.

[0031] In an optional embodiment, comparing whether the pressure difference between the pressure relief valve booster in the open and closed states is greater than a preset pressure difference threshold includes: Set corresponding preset pressure difference thresholds for different atmospheric pressure states; Pressure difference thresholds were set according to vehicle parameters at atmospheric pressures of 100 kPa, 80 kPa, 70 kPa, and 60 kPa.

[0032] By using interpolation, fault thresholds are set under different atmospheric pressure environments, ranging from 100 kPa (standard atmospheric pressure at sea level) to 60 kPa (high-altitude or extreme environments). This prevents misjudgment of the pressure relief valve's inflator sealing due to changes in pressure difference caused by the drop in standard atmospheric pressure in high-altitude or extreme environments. This eliminates environmental interference and improves the accuracy of the judgment results.

[0033] See Figure 3 As shown, this embodiment of the invention also provides a sealing performance diagnostic device for a pressure relief valve booster, comprising an acquisition unit, a determination unit, and an output unit: The recording unit controls the opening and closing of the pressure relief valve and records the pressure of the pressure booster in the open and closed states of the pressure relief valve. The judgment unit determines whether the pressure difference between the pressure relief valve and the pressure booster in the open and closed states is greater than a preset pressure difference threshold. If the unit is identified, then the pressure relief valve booster is determined to be leak-free; otherwise, the pressure relief valve booster is determined to be leaking.

[0034] This invention also provides a computer device, including: a memory, a processor, and a network interface connected via a system bus, wherein the memory stores at least one instruction, and the at least one instruction is loaded and executed by the processor to implement all or part of the steps of the aforementioned method for ensuring the sealing of the pressure relief valve booster.

[0035] The network interface is used for network communication, such as sending assigned tasks. Those skilled in the art will understand that... Figure 4 The structure shown is merely a block diagram of a portion of the structure related to the present invention and does not constitute a limitation on the computer device to which the present invention is applied. A specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0036] A processor can be a CPU, or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. A general-purpose processor can be a microprocessor, or any conventional processor. The processor is the control center of a computer device, connecting all parts of the computer device through various interfaces and lines.

[0037] Memory can be used to store computer programs and / or modules. The processor implements various functions of the computer device by running or executing the computer programs and / or modules stored in the memory, and by accessing data stored in the memory. Memory can mainly include a program storage area and a data storage area. The program storage area can store the operating system, application programs required for at least one function (such as video playback, image playback, etc.), etc.; the data storage area can store data created based on the use of the mobile phone (such as video data, image data, etc.). In addition, memory can include high-speed random access memory, and can also include non-volatile memory, such as hard disks, RAM, plug-in hard disks, SmartMedia Cards (SMC), Secure Digital (SD) cards, Flash Cards, at least one disk storage device, flash memory device, or other volatile solid-state storage devices.

[0038] In one embodiment of the invention, the processor is used to run a computer program stored in a memory to perform the following steps: See Figure 1 As shown, this embodiment of the invention provides a method for diagnosing the sealing performance of a pressure relief valve booster, comprising the following steps: Step 1: Control the pressure relief valve inflator to open and close, and record the pressure at the inlet and outlet of the pressure relief valve in the open and closed states; Step 2: Determine whether the pressure difference between the pressure relief valve and the booster in the open and closed states is greater than the preset pressure difference threshold; Step 3: If yes, then it is determined that the pressure relief valve booster is not leaking; if no, then it is determined that the pressure relief valve booster is leaking.

[0039] In an optional embodiment, before controlling the opening and closing of the pressure relief valve booster and recording the opening and closing states, the method further includes: The system acquires vehicle operating parameters and preset diagnostic conditions. When the vehicle operating parameters are within the preset threshold range and the preset diagnostic conditions are met, the system controls the actuator to reach the required preset position. The actuators include the actuators of components such as EGR, throttle valve, and pressure relief valve of the turbocharger. The actuators are brought to a preset position for diagnostic purposes by ECU commands, and the position change of the actuators in the process of reaching the preset position needs to be smooth.

[0040] In an optional embodiment, the vehicle operating parameters and preset diagnostic conditions include: The vehicle operating parameters include: vehicle speed, vehicle gas cylinder pressure, and atmospheric temperature and pressure. The preset diagnostic conditions include: engine not injecting fuel, engine powered on, brake not activated, gear set to the required gear, no related faults, and engine speed and speed change rate within the preset range. The following faults were found to be absent: the pressure status of the pressure relief valve and the inlet pipe of the booster was fault-free; the temperature and pressure of the pressure relief valve and the booster were fault-free when there was no air intake; and other related electrical components and their performance were fault-free.

[0041] In an optional embodiment, the method for diagnosing the sealing performance of the pressure relief valve booster is characterized in that, the step of acquiring vehicle operating parameters and preset diagnostic conditions, and controlling the actuator to reach a preset position when the vehicle operating parameters are within a preset threshold range and meet the preset diagnostic conditions, includes: Control the actuator to move to the preset position; Determine whether the deviation between the current position and the preset position of the actuator is within a preset deviation threshold. The deviation threshold is set to any value less than 2%. If the deviation is within the preset deviation threshold, the actuator is determined to have reached the preset position, and the fault diagnosis step is started; if the deviation is not within the preset deviation threshold, the actuator is repeatedly controlled to move towards the preset position until the deviation between the current position and the preset position is within the preset deviation threshold, and then the fault diagnosis step is performed.

[0042] In an optional embodiment, the method for diagnosing the sealing performance of the pressure relief valve booster is characterized in that, before controlling the opening and closing of the pressure relief valve booster and recording the opening and closing states, it further includes: Determine whether the opening or closing time of the pressure relief valve booster is greater than or equal to a time threshold. If yes, proceed to the next judgment step; otherwise, do not proceed to the next judgment step.

[0043] In an optional embodiment, the method for diagnosing the sealing performance of the pressure relief valve booster is characterized in that: the preset time threshold is not less than 2 seconds.

[0044] In an optional embodiment, comparing whether the pressure difference between the pressure relief valve booster in the open and closed states is greater than a preset pressure difference threshold includes: Set corresponding preset pressure difference thresholds for different atmospheric pressure states; Pressure difference thresholds were set according to vehicle parameters at atmospheric pressures of 100 kPa, 80 kPa, 70 kPa, and 60 kPa.

[0045] This invention also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements all or part of the steps of the aforementioned method for ensuring the sealing performance of a pressure relief valve booster.

[0046] The embodiments of the present invention can implement all or part of the aforementioned processes, or they can be accomplished by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various methods described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content included in the computer-readable medium can be appropriately added to or subtracted according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electrical carrier signals and telecommunication signals.

[0047] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, servers, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[0048] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0049] The serial numbers in the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0050] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0051] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features of the invention herein.

Claims

1. A method for diagnosing the sealing performance of a pressure relief valve booster, characterized in that, Includes the following steps: Control the opening and closing of the pressure relief valve booster and record the pressure at the inlet and outlet of the pressure relief valve booster in the open and closed states; Determine whether the pressure difference between the pressure relief valve and the booster in the open and closed states is greater than a preset pressure difference threshold. If yes, then the pressure relief valve booster is confirmed to be leak-free; if no, then the pressure relief valve booster is confirmed to be leaking.

2. The method for diagnosing the sealing performance of the pressure relief valve booster according to claim 1, characterized in that, Before controlling the opening and closing of the pressure relief valve booster and recording the pressure at the inlet and outlet of the pressure relief valve booster, the following steps are also included: The system acquires vehicle operating parameters and preset diagnostic conditions. When the vehicle operating parameters are within the preset threshold range and the preset diagnostic conditions are met, the system controls the actuator to reach the required preset position.

3. The method for diagnosing the sealing performance of the pressure relief valve booster according to claim 2, characterized in that: The vehicle operating parameters include: vehicle speed, vehicle gas cylinder pressure, and atmospheric temperature and pressure. The preset diagnostic conditions include: engine not injecting fuel, engine powered on, brake not activated, gear set to the required gear, and engine speed and speed change rate within the corresponding preset range.

4. The method for diagnosing the sealing performance of the pressure relief valve booster according to claim 3, characterized in that, The process of acquiring vehicle operating parameters and preset diagnostic conditions, and controlling the actuator to reach a preset position when the vehicle operating parameters are within a preset threshold range and the preset diagnostic conditions are met, includes: Control the actuator to move to the preset position; Determine whether the deviation between the current position and the preset position of the actuator is within a preset deviation threshold; If yes, confirm that the actuator has reached the preset position; otherwise, repeatedly control the actuator to move towards the preset position until the deviation between the current position and the preset position is within the preset deviation threshold.

5. The method for diagnosing the sealing performance of the pressure relief valve booster according to claim 1, characterized in that, The pressure of the inlet and outlet of the pressure relief valve booster, which controls the opening and closing of the booster and records the opening and closing states, also includes: Determine whether the opening or closing time of the pressure relief valve booster is greater than or equal to a time threshold. If yes, proceed to the next judgment step; otherwise, do not proceed to the next judgment step.

6. The method for diagnosing the sealing performance of the pressure relief valve booster according to claim 5, characterized in that: The preset time threshold is not less than 2 seconds.

7. The method for diagnosing the sealing performance of the pressure relief valve booster according to claim 1, characterized in that, The determination of whether the pressure difference between the pressure relief valve and the booster in the open and closed states is greater than a preset pressure difference threshold includes: For different atmospheric pressure conditions, set corresponding preset pressure difference thresholds.

8. A device for diagnosing the sealing performance of a pressure relief valve booster, characterized in that, include: A recording unit is used to control the opening and closing of the pressure relief valve and record the pressure of the pressure booster in the opening and closing states of the pressure relief valve. The judgment unit is used to determine whether the pressure difference between the pressure relief valve and the pressure booster in the open and closed states is greater than a preset pressure difference threshold. The determination unit is used to determine whether the pressure relief valve booster is leaking if the condition is met, and to determine whether the pressure relief valve booster is leaking if the condition is not met.

9. A computer device, characterized in that, include: A memory and a processor, wherein the memory stores at least one instruction, which is loaded and executed by the processor to implement the method for diagnosing the sealing performance of the pressure relief valve booster as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions that, when executed by a computer, cause the computer to perform the sealing test method for the pressure relief valve booster according to any one of claims 1 to 7.

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