Valve control method and device, engine and vehicle

Abstract

The application provides a control method and device of a valve, an engine and a vehicle, and belongs to the technical field of vehicles. After it is monitored that the intake bypass valve is stuck, instead of immediately giving an alarm, the intake bypass valve is controlled to perform self-cleaning, oil stains and foreign matters attached in the intake bypass valve are cleaned through self-cleaning, and faults caused by occasional foreign matters, oil gas coking after compression, etc. are avoided. If self-cleaning fails, a fault code is reported, but an alarm prompt is not directly given according to the fault code, but the continuous period number of the stuck intake bypass valve is determined to avoid the contingency of fault judgment and improve the accuracy of fault judgment. Only when the continuous period number is greater than or equal to a preset safety number, it can be determined that the intake bypass valve has a fault, and an alarm prompt is given. The contingency of single judgment is avoided through continuous fault judgment, the alarm prompt is avoided when the intake bypass valve is intact, the use cost is saved, and the use experience is improved.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a valve control method, device, engine, and vehicle. Background Technology

[0002] The function of the intake bypass valve is to protect the turbocharger. It is used in conjunction with the turbocharger. When the throttle valve of the intake post-pressurization line is closed, the intake bypass valve opens to discharge the high-pressure gas in the intake post-pressurization line into the environment, thus protecting the intake post-pressurization line and the turbocharger. Summary of the Invention

[0003] In view of this, the purpose of this application is to provide a valve control method, device, engine and vehicle to avoid false alarms of intake bypass valve, improve user experience and save on operating costs.

[0004] To achieve the above objectives, this application provides a valve control method, comprising:

[0005] In response to the detection of intake bypass valve jamming, the intake bypass valve is controlled to perform self-cleaning, and the self-cleaning result is obtained;

[0006] In response to the self-cleaning result being a cleaning failure, a fault code is reported, and the number of consecutive cycles in which the intake bypass valve is stuck is determined.

[0007] If the number of consecutive cycles is greater than or equal to a preset safe number, the intake bypass valve is determined to be faulty, and an alarm is triggered.

[0008] Based on the same inventive concept, this disclosure also provides a valve control device, comprising:

[0009] The self-cleaning control module is configured to: in response to detecting that the intake bypass valve is stuck, control the intake bypass valve to perform self-cleaning and obtain a self-cleaning result;

[0010] The cycle number determination module is configured to: report a fault code in response to the self-cleaning result being a cleaning failure, and determine the number of consecutive cycles in which the intake bypass valve is stuck;

[0011] The alarm module is configured to: determine that the intake bypass valve is faulty and issue an alarm when the number of consecutive cycles is greater than or equal to a preset safe number of cycles.

[0012] Based on the same inventive concept, this disclosure also provides an engine for performing the method described above.

[0013] Based on the same inventive concept, this disclosure also provides a vehicle including a valve control device or engine as described above.

[0014] As can be seen from the above, the valve control method, device, engine, and vehicle provided in this application, upon detecting intake bypass valve jamming, control the intake bypass valve to perform self-cleaning and obtain the self-cleaning result; if the self-cleaning result is a cleaning failure, a fault code is reported, and the number of consecutive cycles of intake bypass valve jamming is determined; if the number of consecutive cycles is greater than or equal to the preset safe number of cycles, it is determined that the intake bypass valve has a fault, and an alarm is issued. Upon detecting intake bypass valve jamming, an alarm is not immediately issued; instead, the intake bypass valve is controlled to perform self-cleaning to remove oil stains and foreign objects adhering to the intake bypass valve, avoiding misjudgments caused by occasional foreign objects, coking of oil and gas in the bypass after pressure, etc. If self-cleaning fails, it indicates that the intake bypass valve jamming is not caused by foreign objects. A fault code will be reported, but an alarm will not be triggered directly based on the fault code. Instead, the accuracy of fault diagnosis is improved by determining the number of consecutive cycles of intake bypass valve jamming. Only when the number of consecutive cycles is greater than or equal to the preset safe number can the intake bypass valve be confirmed as faulty and an alarm be triggered. This continuous fault diagnosis avoids the randomness of single-time diagnosis, avoids the influence of misdiagnosis caused by issues such as loose wiring harnesses, avoids alarms when the intake bypass valve is intact, and avoids frequent replacement or repair of the intake bypass valve by the user, thus saving operating costs and improving the user experience. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a flowchart of a valve control method according to an embodiment of this application;

[0017] Figure 2 This is a schematic diagram of the booster system according to an embodiment of this application;

[0018] Figure 3a This is a schematic diagram of the intake bypass valve in the closed state according to an embodiment of this application;

[0019] Figure 3b This is a schematic diagram of the intake bypass valve in the open state according to an embodiment of this application;

[0020] Figure 4 This is a flowchart illustrating the control of the intake bypass valve after successful self-cleaning according to an embodiment of this application.

[0021] Figure 5This is a flowchart illustrating the control of the intake bypass valve when the number of consecutive cycles is less than a preset safe number, according to an embodiment of this application.

[0022] Figure 6 A flowchart illustrating the process of controlling the intake bypass valve to perform self-cleaning in an embodiment of this application, and obtaining the self-cleaning result;

[0023] Figure 7 A flowchart for determining the number of consecutive cycles of intake bypass valve jamming in an embodiment of this application;

[0024] Figure 8 This is a schematic diagram of the valve control device according to an embodiment of this application;

[0025] Figure 9 This is a schematic diagram of the engine in an embodiment of this application. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0027] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0028] In this article, it is important to understand that any number of elements in the accompanying figures is for illustrative purposes and not for limitation, and any naming is for distinction only and has no limiting meaning.

[0029] Based on the above background description, the following situations also exist in the related technologies:

[0030] In related technologies, the intake bypass valve is used to protect the turbocharger. It works in conjunction with the turbocharger and shuts off the turbocharger when the throttle valve in the intake manifold is closed. However, due to inertia, the turbocharger's turbine blades cannot stop rotating instantly. The turbocharger continues to pressurize the intake manifold after the throttle valve closes, causing the pressure in the intake manifold to increase continuously and remain high for a long time. This results in a sudden increase in pressure in the intake manifold, which may cause high-pressure air in the intake manifold to flow back into the turbocharger, leading to surge or even damage to the turbocharger. Therefore, an intake bypass valve is installed between the turbocharger and the throttle valve to discharge the high-pressure air in the intake manifold.

[0031] The working principle of the intake bypass valve in related technologies is as follows:

[0032] When the vehicle accelerates: the intake bypass valve is closed, and the high-pressure gas pressurized by the turbocharger flows into the intake passage of the gas-using equipment through the intake pressure pipeline;

[0033] When the vehicle decelerates: the intake bypass valve opens, and some high-pressure gas flows into the intake pre-pressure pipeline through the intake bypass valve, which discharges the high-pressure gas in the intake post-pressure pipeline, thus playing a role in depressurization.

[0034] In related technologies, the control strategy for the intake bypass valve is as follows: after the throttle is closed, the intake bypass valve is opened via the wiring harness to discharge the high-pressure gas in the intake post-pressurization pipeline for depressurization. At the same time, the pressure fluctuation in the intake post-pressurization pipeline is monitored by the boost pressure sensor to determine whether the intake post-pressurization pipeline has successfully depressurized. If the pressure fluctuation is too frequent, it is determined that a surge phenomenon has occurred, indicating that the intake bypass valve has failed to open successfully and that the intake bypass valve has a jamming fault. The fault light corresponding to the intake bypass valve is illuminated to prompt the user to repair or replace the intake bypass valve.

[0035] The control strategies in related technologies only rely on the boost pressure result to determine failure, failing to consider other factors such as control issues, wiring harness continuity problems, foreign objects, and coking of oil and gas in the post-pressurization pipeline that could cause the intake bypass valve to fail to open, leading to pressure fluctuations in the intake post-pressurization pipeline. The judgment of whether the intake bypass valve is faulty is too simplistic and arbitrary, unable to accurately determine if there is actually a hardware failure. Furthermore, controlling whether the fault indicator light illuminates based on a single judgment result is overly stringent for various uncertainties that could lead to misjudgments. This results in numerous misjudgments during use, leading to frequent replacements of the intake bypass valve, increasing vehicle operating costs, and providing a poor user experience.

[0036] The valve control method, device, engine, and vehicle provided in this application, upon detecting intake bypass valve jamming, control the intake bypass valve to perform self-cleaning and obtain the self-cleaning result. If the self-cleaning result is a cleaning failure, a fault code is reported, and the number of consecutive cycles of intake bypass valve jamming is determined. If the number of consecutive cycles is greater than or equal to a preset safety number, a fault is determined in the intake bypass valve, and an alarm is issued. Upon detecting intake bypass valve jamming, an alarm is not immediately issued; instead, the intake bypass valve is controlled to perform self-cleaning to remove oil stains and foreign objects adhering to the intake bypass valve, avoiding misjudgments caused by occasional foreign objects, coking of oil and gas in the pressurized bypass, etc. If self-cleaning fails, it indicates that the intake bypass valve jamming is not caused by foreign objects. A fault code will be reported, but an alarm will not be triggered directly based on the fault code. Instead, the accuracy of fault diagnosis is improved by determining the number of consecutive cycles of intake bypass valve jamming. Only when the number of consecutive cycles is greater than or equal to the preset safe number can the intake bypass valve be confirmed as faulty and an alarm be triggered. This continuous fault diagnosis avoids the randomness of single-time diagnosis, avoids the influence of misdiagnosis caused by issues such as loose wiring harnesses, avoids alarms when the intake bypass valve is intact, and avoids frequent replacement or repair of the intake bypass valve by the user, thus saving operating costs and improving the user experience.

[0037] The control method of the gas bypass valve provided in the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0038] In some embodiments, such as Figure 1 As shown, a valve control method includes:

[0039] Step 101: In response to the detection of intake bypass valve jamming, control the intake bypass valve to perform self-cleaning and obtain the self-cleaning result.

[0040] In practice, the reason for misjudgment of the intake bypass valve is that the intake bypass valve is stuck. Therefore, only when the intake bypass valve is detected to be stuck will it be possible to directly determine that there is a fault, which will lead to a high probability of misjudgment. The process of whether the intake bypass valve is stuck is as follows.

[0041] In some embodiments, determining whether the intake bypass valve is stuck includes:

[0042] Step 1011: In response to receiving a request to open the intake bypass valve, and the intercooling temperature of the intake intercooler in the intake post-pressure pipeline is greater than a preset temperature threshold, determine the pressure fluctuation in the intake post-pressure pipeline.

[0043] In practice, the intake bypass valve is generally kept closed when the vehicle is accelerating (or maintaining a constant speed). It only needs to be opened when the vehicle is decelerating. When there is a need to open the intake bypass valve, an opening request will be sent to the intake bypass valve to achieve the opening control of the intake bypass valve.

[0044] In such Figure 2 The supercharging system shown includes an intake pipe and an exhaust pipe. The exhaust pipe includes, in series, air-consuming equipment, exhaust turbine blades, a wastegate valve, and an exhaust port (connected to the exhaust pipe). Adjacent equipment is connected via exhaust pipes. The intake pipe includes, in series, an air filter, a supercharger, an intake intercooler, an intake bypass valve, a throttle valve, and air-consuming equipment. Adjacent equipment is connected via intake pipes.

[0045] The intake piping is divided into pre-intake and post-intake piping. The pre-intake piping is the section of the intake piping from the air filter to the turbocharger; the post-intake piping is the section of the intake piping from the turbocharger to the air-consuming equipment. The pre-intake piping filters the air (through the air filter) and supplies the filtered air to the turbocharger. The turbocharger then pressurizes the filtered air and supplies it to the post-intake piping. Therefore, the pre-intake piping contains only pressurized air and does not require depressurization. The post-intake piping cools the pressurized air (through the intake intercooler) and supplies the cooled pressurized air to the air-consuming equipment. The throttle valve controls whether cooled pressurized air is supplied to the air-consuming equipment.

[0046] Taking an engine as an example, when the throttle is open, it indicates that the engine needs compressed air. The throttle is opened and the intake bypass valve is closed to ensure that compressed air can smoothly enter the engine, guaranteeing complete combustion of fuel and air. When the throttle is closed, it indicates that the engine does not need compressed air and therefore does not require it. The throttle is closed to prevent compressed air from entering the engine. When the throttle valve in the intake manifold closes, the turbocharger shuts off simultaneously. However, due to inertia, the turbocharger's turbine blades cannot stop rotating instantly. The turbocharger continues to supply pressurized air to the intake manifold after the throttle valve closes, causing the pressure in the intake manifold to increase continuously. This results in a sudden increase in pressure within the intake manifold, which may cause high-pressure air in the intake manifold to flow back into the turbocharger, leading to surge or even damage to the turbocharger. Therefore, an intake bypass valve is installed between the turbocharger and the throttle valve to discharge the high-pressure air in the intake manifold.

[0047] If the intake bypass valve malfunctions at this time, and the opening process becomes stuck, causing the intake bypass valve to fail to open completely or not at all, pressurized air cannot be discharged, which may lead to turbocharger surge. Therefore, upon receiving a request to open the intake bypass valve, the intake bypass valve is opened to release pressure, and the intercooler temperature of the intake intercooler in the intake pressure line and the line pressure in the intake pressure line are monitored to determine whether the pressure release was successful.

[0048] The intercooler is an accessory component of the turbocharger. Its function is to reduce the temperature of the high-temperature air after turbocharging, thereby reducing the engine's thermal load, increasing the intake air volume, and ultimately increasing engine power. For turbocharged engines, the intercooler is a crucial component of the turbocharging system. Whether it's a supercharged or turbocharged engine, an intercooler needs to be installed between the turbocharger and the engine's intake manifold. If the pressure in the intake manifold is high, a significant amount of heat will be generated during air compression, causing the intercooler temperature to rise. The higher the pressure, the greater the temperature rise. Therefore, monitoring the intercooler temperature can determine whether pressure relief has been completed.

[0049] If the intercooler temperature of the intake intercooler in the post-intake pressurization line is less than or equal to the preset temperature threshold, it indicates that the pressure in the post-intake pressurization line is low, preventing pressurized air from flowing back into the turbocharger and causing surge. This indicates that the intake bypass valve has adequate pressure relief capability and is not stuck. If the intercooler temperature of the intake intercooler in the post-intake pressurization line is greater than the preset temperature threshold, it indicates that the pressure in the post-intake pressurization line is high, potentially causing pressurized air to flow back into the turbocharger and leading to surge. This indicates that the intake bypass valve does not have adequate pressure relief capability and may be stuck. Further analysis of the pressure fluctuations in the post-intake pressurization line is needed to determine if the intake bypass valve is indeed stuck.

[0050] The accuracy of jamming detection is ensured by cross-checking the temperature and pressure fluctuations of the intercooler.

[0051] Step 1012: In response to pressure fluctuations being greater than or equal to a preset fluctuation threshold, determine that fluctuations exceed the limit, and determine the number of consecutive fluctuation exceedances within one cycle.

[0052] In practice, pressure fluctuation represents the difference between the monitored pressure value and the standard pressure value (the pressure value when the booster is not boosting). If the standard pressure value is 0, then the monitored pressure value is the pressure fluctuation.

[0053] If the pressure fluctuation is greater than or equal to the preset fluctuation threshold, it indicates that the pressure value collected by the pressure sensor set in the pipeline after the intake pressure is large, and it is determined that the fluctuation exceeds the limit, which may lead to surge. However, in order to avoid the randomness in the pressure acquisition process, it is necessary to determine the number of consecutive fluctuations exceeding the limit within one cycle.

[0054] For example, if a cycle time is 1 second and the pipeline pressure sampling frequency is 50ms, then 20 pipeline pressure samples will be collected within one cycle time, resulting in 20 pressure fluctuations. For any pressure fluctuation, a count is performed when the pressure fluctuation exceeds a fluctuation threshold. If the next collected pressure fluctuation is also greater than the fluctuation threshold, an cumulative count is performed, i.e., consecutive count = consecutive count + 1. If the next collected pressure fluctuation is less than or equal to the fluctuation threshold, the consecutive count is reset to zero.

[0055] Step 1013: In response to a consecutive number of times greater than or equal to a preset number threshold, determine that the intake bypass valve is stuck.

[0056] In practice, if the number of consecutive tests is greater than or equal to the preset threshold, it means that the pressure fluctuations in the pipeline are all out of control, eliminating the randomness caused by single or intermittent tests and eliminating the detection error of the pressure sensor. The pressure detection value is valid and reliable, and it can be determined that the intake bypass valve is stuck and subsequent self-cleaning treatment is required.

[0057] Step 1014: In response to the number of consecutive times being less than a preset threshold, determine that the intake bypass valve is not stuck.

[0058] In practice, if the number of consecutive occurrences is less than the preset threshold, it indicates that there are no consecutive instances of exceeding the limit. The exceeding of the limit may be an isolated incident, and the pressure detection value is unreliable. Therefore, it can be determined that the intake bypass valve is not stuck, and the intake bypass valve can continue to be controlled as needed. Cross-verification using intercooler temperature and pressure fluctuations ensures the accuracy of the stuck valve detection.

[0059] If the intake bypass valve is detected to be stuck, a fault code will not be reported directly and the corresponding fault light will not be illuminated. Instead, a self-cleaning function will be added. Self-cleaning involves controlling the intake bypass valve to open and close rapidly multiple times within a certain time period. For example, controlling the intake bypass valve to open and close rapidly three times within one cycle will cause the intake bypass valve to undergo three state switching processes within one cycle. Each state switching process includes a change from closed state to open state and back to closed state. The closed state of the intake bypass valve is as follows: Figure 3a As shown, the opening state of the intake bypass valve is as follows: Figure 3b As shown, the intake bypass valve includes a coil, spring, guide shaft, valve core, and valve port. Upon receiving an opening request, the coil is energized, causing the valve port to move upward via the guide shaft, thus connecting the intake and exhaust ports and allowing pressurized air to be discharged. Upon receiving a closing request, the energization to the coil can be disconnected, or a reverse current can be supplied to the coil, causing the valve port to fall and disconnect the intake and exhaust ports.

[0060] The self-cleaning process involves repeatedly opening and closing the intake bypass valve to remove oil and foreign matter adhering to its interior, preventing misdiagnosis due to occasional foreign objects or coking of oil and gas in the bypass channel after pressure. Then, in the next self-cleaning cycle, the pressure fluctuation of the intake bypass valve is used to determine the self-cleaning result. If continuous excessive fluctuations persist, it indicates that the normal operation of the intake bypass valve has been affected, and the self-cleaning process has failed. If there are no continuous excessive fluctuations, it indicates that the intake bypass valve can operate normally, and the self-cleaning process has been successful.

[0061] By adding a self-cleaning function, the impact of oil stains and foreign objects on the normal use of the bypass valve can be avoided, ensuring the accuracy of fault code reporting.

[0062] Step 102: In response to the self-cleaning result being a cleaning failure, report a fault code and determine the number of consecutive cycles in which the intake bypass valve is stuck.

[0063] In practice, if the self-cleaning result is a cleaning failure, it means that the normal use of the intake bypass valve has been affected and there may be a structural fault. At this time, a fault code is reported, but the corresponding fault light will not be lit directly. In order to avoid the randomness in the pressure acquisition process, it is necessary to determine the number of consecutive cycles of intake bypass valve jamming, that is, to determine the number of consecutive cycles in which the number of consecutive fluctuations exceeds the limit is greater than or equal to the number threshold.

[0064] For example, if the first cycle determines that the intake bypass valve is stuck and the self-cleaning result is a cleaning failure, a fault code is reported, and the continuous cycle count (initially 0) is updated to continuous cycle count = 1. If the next cycle still determines that the intake bypass valve is stuck, then the continuous cycle count = continuous cycle count + 1 = 2. Similarly, if the next cycle still determines that the intake bypass valve is stuck, then the continuous cycle count = continuous cycle count + 1 = 3. If the cycle determines that the intake bypass valve is not stuck, then the continuous cycle count is reset to zero. By determining the number of consecutive cycles in which the intake bypass valve is stuck, the randomness of fault diagnosis is avoided, the accuracy of fault diagnosis is improved, and users are prevented from frequently replacing or repairing the intake bypass valve, thus saving operating costs.

[0065] Step 103: In response to the number of consecutive cycles being greater than or equal to the preset safe number of cycles, determine that there is a fault in the intake bypass valve and issue an alarm.

[0066] In practice, if the number of consecutive cycles is greater than or equal to the preset safety number, the randomness of abnormal monitoring data in a single cycle can be eliminated. Only when the number of consecutive cycles is greater than or equal to the preset safety number can it be determined that the intake bypass valve is faulty and an alarm will be triggered. By judging the faults continuously, the randomness of a single judgment is avoided, the influence of misjudgment caused by issues such as loose wiring harnesses is avoided, alarms are not triggered when the intake bypass valve is intact, and users are not required to frequently replace or repair the intake bypass valve, thus saving operating costs and improving the user experience.

[0067] In summary, the valve control method provided in this application does not immediately trigger an alarm upon detecting intake bypass valve jamming. Instead, it controls the intake bypass valve to perform self-cleaning, removing oil and foreign matter adhering to the valve and preventing misdiagnosis caused by occasional foreign objects or coking of oil and gas in the bypass after pressure. If self-cleaning fails, it indicates that the intake bypass valve jamming is not caused by foreign objects, and a fault code is reported. However, it does not directly trigger an alarm based on the fault code. Instead, it determines the number of consecutive cycles of intake bypass valve jamming to avoid randomness in fault diagnosis and improve accuracy. Only when the number of consecutive cycles is greater than or equal to a preset safety number can a fault be confirmed in the intake bypass valve, and an alarm is triggered. This continuous fault diagnosis avoids the randomness of single-time diagnoses, prevents misdiagnosis caused by issues such as loose wiring harnesses, avoids alarms when the intake bypass valve is intact, and reduces the need for frequent replacement or repair of the intake bypass valve, thus saving operating costs and improving the user experience.

[0068] In some embodiments, such as Figure 4 As shown, the valve control methods also include:

[0069] Step 401: In response to the self-cleaning result being successful, determine the real-time pressure value of the pipeline after the intake pressure.

[0070] In practice, if the self-cleaning result is successful, it indicates that the intake bypass valve is stuck due to oil and foreign objects. The self-cleaning control can clean the corresponding oil or foreign objects, ensuring that the intake bypass valve can open and close smoothly in the next self-cleaning cycle. This allows the intake bypass valve to open smoothly when the throttle valve in the intake manifold is closed, ensuring that the pressurized air in the intake manifold can be discharged through the outlet pipe connected to the pressure relief valve to the intake pipe connecting the air filter and the turbocharger. This bypasses the turbocharger and discharges the pressurized air in the intake manifold, thus relieving the pressure and preventing pressurized air from flowing back into the turbocharger, avoiding surge and improving the user experience.

[0071] After successful self-cleaning, the intake bypass valve can release pressure in the intake manifold. At this point, the intake bypass valve needs to be closed after the pressure is released. Whether the pressure release is complete depends on the real-time pressure value of the intake manifold. Therefore, after successful self-cleaning, the pressure value in the intake manifold can be monitored in real time by a pressure sensor. The timing for closing the intake bypass valve is determined by comparing the real-time pressure value with the preset pressure threshold, ensuring that the intake bypass valve is closed in a timely manner while the pressure is released.

[0072] Step 402: In response to the real-time pressure value being less than or equal to the preset pressure threshold, close the intake bypass valve.

[0073] In practice, if the real-time pressure value is less than or equal to the preset pressure threshold, it indicates that the pressurized air in the intake manifold has been discharged, completing the depressurization process. Closing the intake bypass valve will prevent air backflow into the turbocharger due to excessive pressure in the intake manifold, thus preventing surge. The intake bypass valve can be closed to ensure efficiency during the next pressurization intake. The timing for closing the intake bypass valve is determined by comparing the real-time pressure value with the preset pressure threshold, ensuring timely closure of the intake bypass valve while simultaneously completing depressurization.

[0074] In some embodiments, such as Figure 5 As shown, the valve control methods also include:

[0075] Step 501: In response to the number of consecutive cycles being less than the preset safe number of cycles, determine that there is no fault in the intake bypass valve, store the reported fault code, and determine the real-time pressure value of the intake pressure pipeline.

[0076] In practice, if the number of consecutive cycles is less than the preset safe number, it indicates that the judgment result of a single cycle is due to chance. If, after the first cycle indicating a stuck condition, there is a judgment result indicating that the intake bypass valve is not stuck, it means that the intake bypass valve can open normally within the corresponding cycle and complete the depressurization of the intake pressure downstream pipeline. This confirms that the intake bypass valve does not have a structural fault, and the reported fault code is stored as reference data for subsequent intake bypass valve malfunctions, facilitating maintenance personnel in understanding the cause of the fault and providing convenience for intake bypass valve maintenance. Since the intake bypass valve has opened and begun depressurizing the intake pressure downstream pipeline, it needs to be closed after depressurization is complete. Whether depressurization is complete depends on the real-time pressure value of the intake pressure downstream pipeline. Therefore, after determining that the number of consecutive cycles is less than the preset safe number, a pressure sensor can be used to monitor the pressure value in the intake pressure downstream pipeline in real time. By comparing the real-time pressure value with a preset pressure threshold, the timing for closing the intake bypass valve is determined, ensuring that depressurization is completed while the intake bypass valve is closed in a timely manner.

[0077] Step 502: In response to the real-time pressure value being less than or equal to the preset pressure threshold, close the intake bypass valve.

[0078] In practice, if the real-time pressure value is less than or equal to the preset pressure threshold, it indicates that the pressurized air in the intake manifold has been discharged, completing the depressurization process. Closing the intake bypass valve will prevent air backflow into the turbocharger due to excessive pressure in the intake manifold, thus preventing surge. The intake bypass valve can be closed to ensure efficiency during the next pressurization intake. The timing for closing the intake bypass valve is determined by comparing the real-time pressure value with the preset pressure threshold, ensuring timely closure of the intake bypass valve while simultaneously completing depressurization.

[0079] In some embodiments, such as Figure 6 As shown, the intake bypass valve is controlled to perform self-cleaning, and the self-cleaning results include:

[0080] Step 601: Within one cycle, control the intake bypass valve to continuously open and close according to the preset number of cleaning cycles.

[0081] In practice, the self-cleaning process involves controlling the intake bypass valve to open and close multiple times to remove oil and foreign matter adhering to it, preventing misdiagnosis caused by occasional foreign objects or coking of oil and gas in the afterburner. To avoid the self-cleaning process taking too long, it can be completed within one cycle. The preset number of cleaning cycles can be 3 or 4. By controlling the intake bypass valve to continuously open and close according to the preset number of cleaning cycles, the oil and foreign matter inside the intake bypass valve can be cleaned, thus avoiding misdiagnosis caused by foreign objects or oil.

[0082] Step 602: In the next cycle, determine the new pressure fluctuation in the pipeline after the intake pressure, and determine the self-cleaning result based on the new pressure fluctuation.

[0083] In practice, the result of self-cleaning needs to be judged in the next self-cleaning cycle. Therefore, the result of self-cleaning needs to be determined by the new pressure fluctuation of the intake bypass valve in the next self-cleaning cycle. The determination process is shown in the following example.

[0084] In some embodiments, determining the self-cleaning result based on new pressure fluctuations includes:

[0085] Step 6021: In response to the new pressure fluctuation being less than the preset fluctuation threshold, the self-cleaning result is determined to be successful.

[0086] In practice, if the new pressure fluctuation is less than the preset fluctuation threshold, it means that the pressurized air in the intake pressure pipeline has been discharged, the intake bypass valve can depressurize the intake pressure pipeline, the self-cleaning result is confirmed as successful, and the intake bypass valve can work normally.

[0087] Step 6022: In response to a new pressure fluctuation being greater than or equal to a preset fluctuation threshold, and the number of consecutive fluctuations exceeding the limit being greater than or equal to a preset number threshold, the self-cleaning result is determined to be a self-cleaning failure.

[0088] In practice, if the new pressure fluctuation is greater than or equal to the preset fluctuation threshold, it indicates that the pressure relief of the inlet pressure pipeline has failed. However, it may be due to the high data acquisition frequency causing the pressurized gas to not yet be discharged from the inlet pressure pipeline. Therefore, it is necessary to determine the number of consecutive fluctuations exceeding the limit to allow time for gas discharge and to rule out the randomness of pressure detection. If the number of consecutive fluctuations is greater than or equal to the preset number threshold, it indicates that the fluctuation exceeding the limit is not a random situation, nor is it caused by slow pressure relief. It means that the inlet bypass valve has a fault that it cannot relieve pressure. The self-cleaning result is determined to be a self-cleaning failure, and the inlet bypass valve cannot complete the pressure relief of the inlet pressure pipeline.

[0089] Step 6023: In response to a new pressure fluctuation being greater than or equal to a preset fluctuation threshold, and the number of consecutive fluctuations exceeding the limit being less than a preset number threshold, the self-cleaning result is determined to be successful.

[0090] In practice, if the new pressure fluctuation is greater than or equal to the preset fluctuation threshold, it indicates that the pressure relief of the inlet pressure pipeline has failed. However, it may be due to the high data acquisition frequency causing the pressurized gas to not yet be discharged from the inlet pressure pipeline. Therefore, it is necessary to determine the number of consecutive fluctuations exceeding the limit to allow time for gas discharge and to eliminate the randomness of pressure detection. If the number of consecutive fluctuations exceeding the limit is less than the preset number threshold, it indicates that there is randomness in the judgment process, or that the pressure relief process requires a certain amount of time to complete. The inlet bypass valve can complete the pressure relief of the inlet pressure pipeline, and the self-cleaning result is determined to be successful. The inlet bypass valve can be used normally after self-cleaning.

[0091] After detecting that the intake bypass valve is stuck, it will not immediately issue an alarm. Instead, it will control the intake bypass valve to perform self-cleaning. The self-cleaning process removes oil and foreign matter attached to the intake bypass valve, avoiding misjudgments caused by occasional foreign matter, coking of oil and gas in the bypass after pressure.

[0092] In some embodiments, such as Figure 7 As shown, the number of consecutive cycles of intake bypass valve jamming is determined, including:

[0093] Step 701: Determine whether the intake bypass valve is stuck in the next cycle.

[0094] In practice, to ensure continuity in the process of determining the number of consecutive cycles, after any cycle is determined to be stuck, the result is updated by using the number of consecutive cycles = number of consecutive cycles + 1. Then, in the next cycle, it is determined whether the intake bypass valve is stuck, and the value of the number of consecutive cycles is determined based on the determination result.

[0095] Step 702: In response to the intake bypass valve jamming, perform a cumulative calculation of the number of consecutive cycles.

[0096] In practice, if the judgment result in the next cycle is that the intake bypass valve is stuck, it means that the intake bypass valve has been stuck continuously. It is necessary to perform an cumulative calculation on the number of consecutive cycles to update the value of the number of consecutive cycles. The cumulative calculation process is: number of consecutive cycles = number of consecutive cycles + 1.

[0097] Step 703: In response to the intake bypass valve not being stuck, the number of consecutive cycles is reset to zero.

[0098] In specific implementation, if the intake bypass valve is not stuck, it means that the intake bypass valve has been able to open smoothly in the new cycle and complete the depressurization of the intake pressure pipeline. There is no need to continue to judge the fault. The number of consecutive cycles should be reset to zero to provide an initial value for the next consecutive judgment.

[0099] After a self-cleaning failure, a fault code is reported, but an alarm is not triggered directly based on the fault code. Instead, the accuracy of fault diagnosis is improved by determining the number of consecutive cycles in which the intake bypass valve is stuck. Only when the number of consecutive cycles is greater than or equal to the preset safe number can the intake bypass valve be confirmed as faulty and an alarm be triggered. This continuous fault diagnosis avoids the randomness of single-time diagnosis, avoids the influence of misdiagnosis caused by issues such as loose wiring harnesses, avoids alarms when the intake bypass valve is intact, and avoids frequent replacement or repair of the intake bypass valve by the user, thus saving operating costs and improving the user experience.

[0100] It should be noted that the method in this embodiment can be executed by a single device, such as a computer or server. The method can also be applied in a distributed scenario, where multiple devices cooperate to complete the task. In such a distributed scenario, one of these devices may execute only one or more steps of the method in this embodiment, and the multiple devices will interact with each other to complete the method described.

[0101] It should be noted that the above description describes some embodiments of this application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in a different order than that shown in the above embodiments and still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0102] Based on the same inventive concept, corresponding to any of the above embodiments, this application also provides a valve control device.

[0103] refer to Figure 8 The control device for the valve includes:

[0104] The self-cleaning control module 10 is configured to: in response to detecting that the intake bypass valve is stuck, control the intake bypass valve to perform self-cleaning and obtain the self-cleaning result;

[0105] The cycle number determination module 20 is configured to: report a fault code and determine the number of consecutive cycles of intake bypass valve jamming in response to a self-cleaning failure result.

[0106] The alarm module 30 is configured to: determine that the intake bypass valve is faulty and issue an alarm when the number of consecutive cycles is greater than or equal to a preset safe number of cycles.

[0107] For ease of description, the above devices are described in terms of function, divided into various modules. Of course, in implementing this application, the functions of each module can be implemented in one or more software and / or hardware.

[0108] The apparatus described above is used to implement the control method of the corresponding valve in any of the foregoing embodiments, and has the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0109] Based on the same inventive concept, corresponding to the methods of any of the above embodiments, this application also provides an engine, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the valve control method described in any of the above embodiments.

[0110] Figure 9A more specific schematic diagram of the engine hardware structure provided in this embodiment is shown. The device may include: a processor 1010, a memory 1020, an input / output interface 1030, a communication interface 1040, and a bus 1050. The processor 1010, memory 1020, input / output interface 1030, and communication interface 1040 are interconnected internally via the bus 1050.

[0111] The processor 1010 can be implemented using a general-purpose CPU (Central Processing Unit), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this specification.

[0112] The memory 1020 can be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory), static storage device, dynamic storage device, etc. The memory 1020 can store the operating system and other applications. When the technical solutions provided in the embodiments of this specification are implemented by software or firmware, the relevant program code is stored in the memory 1020 and is called and executed by the processor 1010.

[0113] The input / output interface 1030 is used to connect input / output modules to realize information input and output. Input / output modules can be configured as components within the device (not shown in the figure) or externally connected to the device to provide corresponding functions. Input devices may include keyboards, mice, touchscreens, microphones, various sensors, etc., while output devices may include displays, speakers, vibrators, indicator lights, etc.

[0114] The communication interface 1040 is used to connect a communication module (not shown in the figure) to enable communication between this device and other devices. The communication module can communicate via wired means (such as USB, Ethernet cable, etc.) or wireless means (such as mobile network, WIFI, Bluetooth, etc.).

[0115] Bus 1050 includes a pathway for transmitting information between various components of the device, such as processor 1010, memory 1020, input / output interface 1030, and communication interface 1040.

[0116] It should be noted that although the above-described device only shows the processor 1010, memory 1020, input / output interface 1030, communication interface 1040, and bus 1050, in specific implementations, the device may also include other components necessary for normal operation. Furthermore, those skilled in the art will understand that the above-described device may only include the components necessary for implementing the embodiments of this specification, and not necessarily all the components shown in the figures.

[0117] The engine in the above embodiments is used to implement the control method of the corresponding valve in any of the foregoing embodiments, and has the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0118] Based on the same inventive concept, corresponding to the methods of any of the above embodiments, this application also provides a non-transitory computer-readable storage medium that stores computer instructions for causing the computer to execute the valve control method as described in any of the above embodiments.

[0119] The computer-readable medium of this embodiment includes permanent and non-permanent, removable and non-removable media, and information storage can be implemented by any method or technology. Information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transfer medium that can be used to store information accessible by a computing device.

[0120] The computer instructions stored in the storage medium of the above embodiments are used to cause the computer to execute the valve control method as described in any of the above embodiments, and have the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0121] Based on the same inventive concept, corresponding to any of the above embodiments, this application also provides a vehicle, including an engine or valve control device of the above embodiments, and executes the valve control method as described in any of the above embodiments through the engine or valve control device of the above embodiments, and has the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0122] It is understood that before using the technical solutions of the various embodiments in this disclosure, users will be informed of the type, scope of use, and usage scenarios of the personal information involved in an appropriate manner, and user authorization will be obtained.

[0123] For example, upon receiving a user's active request, a prompt message is sent to the user to explicitly inform them that the requested operation will require the acquisition and use of the user's personal information. This allows the user to independently choose, based on the prompt message, whether to provide personal information to the software or hardware such as electronic devices, applications, servers, or storage media performing the operations of this disclosed technical solution.

[0124] As an optional but not limited implementation, in response to a user's active request, sending a prompt message to the user can be done via a pop-up window, where the prompt message can be presented in text format. Furthermore, the pop-up window can also include a selection control allowing the user to choose "agree" or "disagree" to provide personal information to the electronic device.

[0125] It is understood that the above notification and user authorization process are merely illustrative and do not constitute a limitation on the implementation of this disclosure. Other methods that comply with relevant laws and regulations may also be applied to the implementation of this disclosure.

[0126] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this application is limited to these examples; under the concept of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the embodiments of this application as described above, which are not provided in detail for the sake of brevity.

[0127] Additionally, to simplify the description and discussion, and to avoid obscuring the embodiments of this application, the well-known power / ground connections to integrated circuit (IC) chips and other components may or may not be shown in the provided drawings. Furthermore, the apparatus may be shown in block diagram form to avoid obscuring the embodiments of this application, and this also takes into account the fact that the details of the implementation of these block diagram apparatuses are highly dependent on the platform on which the embodiments of this application will be implemented (i.e., these details should be fully understood by those skilled in the art). While specific details (e.g., circuits) have been set forth to describe exemplary embodiments of this application, it will be apparent to those skilled in the art that the embodiments of this application can be implemented without these specific details or with variations thereof. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0128] Although this application has been described in conjunction with specific embodiments thereof, many substitutions, modifications, and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may be used with the embodiments discussed.

[0129] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the claims of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.

Claims

1. A valve control method, characterized in that, include: In response to the detection of intake bypass valve jamming, the intake bypass valve is controlled to perform self-cleaning to obtain a self-cleaning result, wherein the self-cleaning is to control the intake bypass valve to open and close rapidly multiple times within a preset time. In response to the self-cleaning result being a cleaning failure, a fault code is reported, and the number of consecutive cycles in which the intake bypass valve is stuck is determined. In response to the number of consecutive cycles being greater than or equal to a preset safe number of cycles, it is determined that the intake bypass valve is faulty and an alarm is triggered. Determining whether the intake bypass valve is stuck includes: In response to receiving a request to open the intake bypass valve, and the intercooling temperature of the intake intercooler in the intake post-pressure pipeline is greater than a preset temperature threshold, the pressure fluctuation of the intake post-pressure pipeline is determined. In response to the pressure fluctuation being greater than or equal to a preset fluctuation threshold, it is determined that the fluctuation exceeds the limit, and the number of consecutive fluctuations exceeding the limit is determined within one cycle. In response to the number of consecutive occurrences being greater than or equal to a preset threshold, it is determined that the intake bypass valve is stuck; In response to the number of consecutive occurrences being less than a preset threshold, it is determined that the intake bypass valve is not stuck.

2. The valve control method according to claim 1, characterized in that, The process of controlling the intake bypass valve to perform self-cleaning, and obtaining the self-cleaning result, includes: Within one cycle, the intake bypass valve is continuously opened and closed according to the preset number of cleaning cycles. In the next cycle, the new pressure fluctuation of the intake pressure pipeline is determined, and the self-cleaning result is determined based on the new pressure fluctuation.

3. The valve control method according to claim 2, characterized in that, Determining the self-cleaning result based on the new pressure fluctuation includes: In response to the new pressure fluctuation being less than a preset fluctuation threshold, the self-cleaning result is determined to be successful. In response to the new pressure fluctuation being greater than or equal to a preset fluctuation threshold, and the number of consecutive fluctuations exceeding the limit being greater than or equal to a preset number threshold, the self-cleaning result is determined to be a self-cleaning failure. If the new pressure fluctuation is greater than or equal to a preset fluctuation threshold, and the number of consecutive fluctuations exceeding the limit is less than a preset number threshold, the self-cleaning result is determined to be successful.

4. The valve control method according to claim 1, characterized in that, Determining the number of consecutive cycles of the intake bypass valve jamming includes: Determine whether the intake bypass valve is stuck in the next cycle; In response to the stuck intake bypass valve, the number of consecutive cycles is calculated cumulatively once; In response to the intake bypass valve not being stuck, the number of consecutive cycles is reset to zero.

5. The valve control method according to claim 1, characterized in that, Also includes: In response to the self-cleaning result indicating successful cleaning, the real-time pressure value of the pipeline after the intake pressure is determined; In response to the real-time pressure value being less than or equal to a preset pressure threshold, the intake bypass valve is closed.

6. The valve control method according to claim 1, characterized in that, Also includes: In response to the number of consecutive cycles being less than a preset safe number of cycles, it is determined that the intake bypass valve is not faulty, the reported fault code is stored, and the real-time pressure value of the intake pressure pipeline is determined. In response to the real-time pressure value being less than or equal to a preset pressure threshold, the intake bypass valve is closed.

7. A valve control device, characterized in that, include: The self-cleaning control module is configured to: in response to detecting that the intake bypass valve is stuck, control the intake bypass valve to perform self-cleaning and obtain a self-cleaning result; The cycle number determination module is configured to: report a fault code in response to the self-cleaning result being a cleaning failure, and determine the number of consecutive cycles in which the intake bypass valve is stuck; The alarm module is configured to: determine that the intake bypass valve is faulty and issue an alarm when the number of consecutive cycles is greater than or equal to a preset number of safe cycles; The self-cleaning control module is configured to: in response to receiving a request to open the intake bypass valve and the intercooling temperature of the intake intercooler in the intake post-pressure pipeline being greater than a preset temperature threshold, determine the pressure fluctuation of the intake post-pressure pipeline. In response to the pressure fluctuation being greater than or equal to a preset fluctuation threshold, it is determined that the fluctuation exceeds the limit, and the number of consecutive fluctuations exceeding the limit is determined within one cycle. In response to the number of consecutive occurrences being greater than or equal to a preset threshold, it is determined that the intake bypass valve is stuck; In response to the number of consecutive occurrences being less than a preset threshold, it is determined that the intake bypass valve is not stuck.

8. An engine, characterized in that, The engine is used to perform the method as described in any one of claims 1 to 6.

9. A vehicle, characterized in that, Includes a valve control device as described in claim 7 or an engine as described in claim 8.

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