Engine intake gas vent management method and related devices

Abstract

The application discloses an engine intake gas exhaust management method and related device, which can determine whether the intake pressure of the engine is less than the preset opening pressure of the exhaust valve; if the intake pressure is not less than the opening pressure of the exhaust valve, after the duration that the intake pressure is not less than the opening pressure of the exhaust valve reaches the first time length, it is determined whether the exhaust pressure of the engine is greater than 0; if the exhaust pressure is greater than 0, it is determined whether the intake pressure of the engine is greater than the preset intake pressure limit value of the engine, and the intake pressure limit value represents the pressure limit value after the opening of the exhaust valve of the engine; if the intake pressure is greater than the intake pressure threshold value, it is determined that the opening of the exhaust valve is abnormal; if the intake pressure is not greater than the intake pressure threshold value, it is determined that the opening of the exhaust valve is normal. The application can accurately identify the opening of the exhaust valve based on the intake pressure and the exhaust pressure, so as to determine whether the opening of the intake valve is abnormal, and the identification effect is relatively objective, accurate, timely and efficient.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of engine, in particular to an engine intake and exhaust management method and related device. BACKGROUND

[0002] The turbocharging technology has been widely used in engines, in which air is pressurized by a supercharger and then cooled by an intercooler before entering the combustion chamber. The supercharger increases the pressure of the pressurized air at normal load to increase the excess air ratio. However, this measure has a negative impact, that is, the high load pressurized air pressure is too large, resulting in too high cylinder combustion pressure, and even exceeding the design burst pressure, affecting the reliability of the engine.

[0003] To eliminate the above effects, an intake and exhaust valve is generally added now, and an opening pressure is set. When the intake pressure reaches the set value, the exhaust valve is opened to release air, so as to reduce the intake and lower the cylinder combustion pressure. However, there is no monitoring means for the exhaust valve at present. Therefore, how to accurately monitor the health status of the exhaust valve becomes a technical problem to be solved by the personnel in the field. SUMMARY

[0004] In view of the above problems, the present application provides an engine intake and exhaust management method and related device which can overcome the above problems or at least partially solve the above problems.

[0005] In a first aspect, an engine intake and exhaust management method comprises:

[0006] determining whether the intake pressure of the engine is less than the opening pressure of the exhaust valve preset by the engine;

[0007] if the intake pressure is not less than the opening pressure of the exhaust valve, determining whether the exhaust pressure of the engine is greater than 0 after the duration that the intake pressure is not less than the opening pressure of the exhaust valve reaches a first time length;

[0008] if the exhaust pressure is greater than 0, determining whether the intake pressure of the engine is greater than the intake pressure limit value preset by the engine, wherein the intake pressure limit value represents the pressure limit value after the opening of the exhaust valve of the engine;

[0009] if the intake pressure is greater than the intake pressure threshold value, determining that the opening degree of the exhaust valve is abnormal;

[0010] if the intake pressure is not greater than the intake pressure threshold value, determining that the opening degree of the exhaust valve is normal.

[0011] Optionally, in some optional embodiments, after determining whether the intake pressure of the engine is less than the opening pressure of the exhaust valve preset by the engine, the method further comprises:

[0012] If the intake pressure is less than the exhaust valve opening pressure, after the duration that the intake pressure is less than the exhaust valve opening pressure reaches the first time length, it is determined whether the opening degree of the intake valve is normal according to the exhaust pressure of the engine.

[0013] Optionally, in some optional embodiments, the determining whether the opening degree of the intake valve is normal according to the exhaust pressure of the engine after the duration that the intake pressure is less than the exhaust valve opening pressure reaches the first time length comprises:

[0014] After the duration that the intake pressure is less than the exhaust valve opening pressure reaches the first time length, it is determined whether the exhaust pressure of the engine is greater than 0.

[0015] If the exhaust pressure of the engine is greater than 0, it is determined that the exhaust valve is abnormally opened.

[0016] If the exhaust pressure of the engine is not greater than 0, it is determined that the exhaust valve is normal.

[0017] Optionally, in some optional embodiments, after the determining whether the exhaust pressure of the engine is greater than 0 if the intake pressure is not less than the exhaust valve opening pressure, and the duration that the intake pressure is not less than the exhaust valve opening pressure reaches the first time length, the method further comprises:

[0018] If the exhaust pressure is not greater than 0, it is determined that the exhaust valve is abnormally not opened.

[0019] Optionally, in some optional embodiments, after the determining that the exhaust valve is abnormally not opened if the exhaust pressure is not greater than 0, the method further comprises:

[0020] Troubleshooting is performed on the exhaust valve, and the maximum allowable operating load of the engine cannot exceed the minimum limit load of the supercharge pressure.

[0021] Optionally, in some optional embodiments, after the determining that the opening degree of the exhaust valve is abnormal if the intake pressure is greater than the intake pressure threshold, the method further comprises:

[0022] Troubleshooting is performed on the exhaust valve, and the maximum allowable operating load of the engine cannot exceed the minimum limit load of the supercharge pressure.

[0023] In a second aspect, an engine intake and exhaust management device comprises a first judging unit, a second judging unit, a third judging unit, an opening degree abnormal unit and an opening degree normal unit.

[0024] The first judging unit is configured to judge whether the intake pressure of the engine is less than a preset opening pressure of the exhaust valve of the engine.

[0025] The second judging unit is configured to, if the intake pressure is not less than the opening pressure of the exhaust valve, judge whether the exhaust pressure of the engine is greater than 0 after a duration that the intake pressure is not less than the opening pressure of the exhaust valve reaches a first time length.

[0026] The third judging unit is configured to, if the exhaust pressure is greater than 0, judge whether the intake pressure of the engine is greater than a preset intake pressure limit of the engine, wherein the intake pressure limit represents a pressure limit after the exhaust valve of the engine is opened.

[0027] The opening abnormality unit is configured to, if the intake pressure is greater than the intake pressure threshold, determine that the opening of the exhaust valve is abnormal.

[0028] The opening normality unit is configured to, if the intake pressure is not greater than the intake pressure threshold, determine that the opening of the exhaust valve is normal.

[0029] Optionally, in some optional embodiments, the device further comprises a fourth judging unit.

[0030] The fourth judging unit is configured to, after judging whether the intake pressure of the engine is less than the preset opening pressure of the exhaust valve of the engine, if the intake pressure is less than the opening pressure of the exhaust valve, determine whether the opening of the intake valve is normal according to the exhaust pressure of the engine after a duration that the intake pressure is less than the opening pressure of the exhaust valve reaches the first time length.

[0031] In a third aspect, a computer readable storage medium has a program stored thereon, where the program, when executed by a processor, implements the engine intake and exhaust management method of any of the above aspects.

[0032] In a fourth aspect, an electronic device includes at least one processor, and at least one memory connected to the processor via a bus; wherein the processor, the memory and the bus complete communication with each other; the processor is configured to call program instructions in the memory to execute the engine intake and exhaust management method of any of the above aspects.

[0033] By the above technical scheme, the engine intake and exhaust management method and related device provided by the application can determine whether the intake pressure of the engine is less than the opening pressure of the exhaust valve preset by the engine; if the intake pressure is not less than the opening pressure of the exhaust valve, after the duration that the intake pressure is not less than the opening pressure of the exhaust valve reaches a first time length, it is determined whether the exhaust pressure of the engine is greater than 0; if the exhaust pressure is greater than 0, it is determined whether the intake pressure of the engine is greater than the intake pressure threshold value preset by the engine, wherein the intake pressure threshold value represents the pressure threshold value after the opening of the exhaust valve of the engine; if the intake pressure is greater than the intake pressure threshold value, it is determined that the opening degree of the exhaust valve is abnormal; and if the intake pressure is not greater than the intake pressure threshold value, it is determined that the opening degree of the exhaust valve is normal. It can be seen that the application can accurately identify the opening degree of the exhaust valve based on the intake pressure and the exhaust pressure, so as to determine whether the opening degree of the intake valve is abnormal, and the identification effect is relatively objective, accurate, timely and efficient.

[0034] The above description is only a summary of the technical scheme of the application, in order to more clearly understand the technical means of the application, the specific embodiments of the application can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the application more obvious and easy to understand, the following specific embodiments of the application are described. BRIEF DESCRIPTION OF DRAWINGS

[0035] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of illustrating the preferred embodiments and are not considered limiting the application. Moreover, the same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0036] Figure 1 A flow chart of a first engine intake and exhaust management method provided by the application is shown;

[0037] Figure 2 A relationship diagram between intake pressure and load rate provided by the application is shown;

[0038] Figure 3 A flow chart of a second engine intake and exhaust management method provided by the application is shown;

[0039] Figure 4 A structural schematic diagram of an engine intake and exhaust management system provided by the application is shown;

[0040] Figure 5 A structural schematic diagram of an engine intake and exhaust management device provided by the application is shown;

[0041] Figure 6A structural schematic diagram of an electronic device provided by the present application is shown. DETAILED DESCRIPTION

[0042] Exemplary embodiments of the present application will be described in greater detail below with reference to the accompanying drawings. Although exemplary embodiments of the present application are shown in the drawings, it is understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present application can be thoroughly and completely understood, and so that the scope of the present application can be accurately conveyed to those skilled in the art.

[0043] As Figure 1 shown, the present application provides an engine intake and exhaust management method, comprising: S100, S200, S300, S400 and S500;

[0044] S100, determining whether the intake pressure of the engine is less than the preset opening pressure of the exhaust valve of the engine;

[0045] Optionally, the present application can implant a corresponding intake and exhaust health management program into the engine control system, and select whether to activate the intake and exhaust management program by operating on the operation screen. When not activated, an intake and exhaust unmonitored alarm is displayed, and the maximum allowable operating load cannot exceed the super-burst minimum limit load when the load limit is executed. When the program has been activated, S100 of the present application is started, and the present application does not limit this.

[0046] Optionally, the present application can obtain the boost pressure of the engine at each load point under the required working environment temperature through simulation or test calibration; and further obtain the intake pressure threshold of each load point reaching the design burst pressure through simulation or test calibration.

[0047] For example, a certain marine engine requires no power reduction at 0-45℃, and through simulation, the boost pressure of each load point at different temperatures is shown in Table 1 under the condition of no exhaust.

[0048] Table 1

[0049]

[0050] Through simulation, the intake pressure threshold of each load point reaching the design burst pressure is shown in the data Figure 2 Since the load rate is less than 75% under the full operating temperature, the intake pressure will not reach the design burst threshold, and it can be considered that the load less than 75% is risk-free. According to the above data, the exhaust valve parameters are designed, the opening pressure of the exhaust valve is P1, and the limit value of the intake pressure after the opening of the exhaust valve is P2.

[0051] The load and intake pressure threshold are introduced into the ECU, and when the intake pressure is greater than the threshold, the corresponding load rate is not allowed to exceed, and the load rate limitation can be realized by oil quantity limitation, which is not limited in the application.

[0052] Optionally, the application can set the minimum required load limit for overpressure as N1, for example, N1 is 75% load in the above case.

[0053] Optionally, the application can collect the above intake pressure through a pressure sensor, which is not limited in the application.

[0054] Optionally, in some optional embodiments, after S100, the method further comprises step 1.1.

[0055] Step 1.1, if the intake pressure is less than the bleed valve opening pressure, after the duration that the intake pressure is less than the bleed valve opening pressure reaches the first time length, it is determined whether the opening of the intake valve is normal according to the bleed pressure of the engine.

[0056] Optionally, after determining that the intake pressure is less than the bleed valve opening pressure (i.e. P1 mentioned above), the application can continuously monitor the intake pressure until it is found that the intake pressure has been less than the bleed valve opening pressure for the first time length, and then it can be determined whether the opening of the intake valve is normal based on the bleed pressure at that time.

[0057] For example, in some optional embodiments, the step 1.1 comprises steps 2.1, 2.2 and 2.3.

[0058] Step 2.1, after the duration that the intake pressure is less than the bleed valve opening pressure reaches the first time length, it is determined whether the bleed pressure of the engine is greater than 0.

[0059] Step 2.2, if the bleed pressure of the engine is greater than 0, it is determined that the bleed valve is abnormally opened.

[0060] Step 2.3, if the bleed pressure of the engine is not greater than 0, it is determined that the bleed valve is normal.

[0061] Optionally, the intake and bleed management program is activated to judge the intake pressure, if the intake pressure is less than the bleed valve opening pressure after 5S, it is determined whether the bleed pressure is greater than 0, if the bleed pressure has no value at this time, it is determined that the bleed valve is normal, and the load limitation strategy does not need to be executed; if the bleed pressure is greater than 0 at this time, it is determined that the bleed valve is abnormally opened, and the fault is repaired, but the intake pressure is less than the limit value at this time, and the load limitation strategy does not need to be executed.

[0062] S200, if the intake pressure is not less than the bleed valve opening pressure, determining whether the bleed pressure of the engine is greater than 0 after the duration that the intake pressure is not less than the bleed valve opening pressure reaches a first time length;

[0063] Optionally, after the S200, the method further comprises: step 3.1.

[0064] Step 3.1, if the bleed pressure is not greater than 0, determining that the bleed valve is abnormally not opened.

[0065] Optionally, the intake and bleed management program is activated, the intake pressure is judged, if the intake pressure is greater than the bleed valve opening pressure after 5 seconds, it is judged whether the bleed pressure is greater than 0. If the bleed pressure has no value at this time, it is judged that the bleed valve is abnormally not opened and a fault alarm is given, and a load limitation is executed, the maximum allowable operating load cannot exceed the minimum limitation load N1 of the super-burst pressure; if the bleed pressure is greater than 0, it is judged whether the intake pressure is greater than the intake pressure limit value P2 after the bleed valve is opened. If the intake pressure is greater than P2, a bleed valve abnormal opening degree maintenance alarm is displayed, and a load limitation strategy is executed according to the actual intake pressure; if the intake pressure is less than or equal to P2, the bleed valve is normally operated, and no oil limitation strategy needs to be executed.

[0066] Optionally, after the step 3.1, the method further comprises: step 4.1.

[0067] Step 4.1, troubleshooting the bleed valve, and controlling the maximum allowable operating load of the engine to be unable to exceed the minimum limitation load of the super-burst pressure.

[0068] S300, if the bleed pressure is greater than 0, judging whether the intake pressure of the engine is greater than a preset intake pressure limit value of the engine, wherein the intake pressure limit value represents the pressure limit value after the bleed valve of the engine is opened;

[0069] S400, if the intake pressure is greater than the intake pressure threshold value, determining that the opening degree of the bleed valve is abnormal.

[0070] Optionally, after the S400, the method further comprises: step 5.1.

[0071] Step 5.1, troubleshooting the bleed valve, and controlling the maximum allowable operating load of the engine to be unable to exceed the minimum limitation load of the super-burst pressure.

[0072] S500, if the intake pressure is not greater than the intake pressure threshold value, determining that the opening degree of the bleed valve is normal.

[0073] Optionally, in order to clearly describe the detailed scheme of the present application, the present application provides a complete flow chart as shown in Figure 3 The content in the figure has been explained in the foregoing, and will not be described here.

[0074] Optionally, in order to cooperate with the above-mentioned scheme of the present application, the present application also provides a system structure diagram as shown in Figure 4 Wherein, 1 is an intake pipe after engine supercharging and intercooling, the intake pipe has an intake pressure sensor 2, 7 is a gas discharge pipe connected with the intake pipe, 3 is a gas discharge valve which is opened when gas discharge is needed, 4 and 5 are stop valves, the stop valve 4 mainly controls the opening and closing of the entire gas discharge pipe, the stop valve 5 is connected in parallel with the gas discharge valve 3, 6 is a gas discharge pressure sensor, the sampling point is in the gas discharge pipe 7, and after the gas discharge valve 3, the stop valve 4 and the stop valve 5.

[0075] Optionally, the stop valve 4 mainly controls the opening and closing of the entire gas discharge pipe, the stop valve 5 is connected in parallel with the gas discharge valve 3, the stop valve 4 is always open, and the stop valve 5 is always closed. When the gas discharge valve 3 is abnormally opened and fails, but cannot be repaired immediately, the stop valve 4 can be closed to avoid affecting the performance of the engine; when the gas discharge valve 3 cannot be opened and fails, but cannot be repaired immediately, the stop valve 5 can be opened to manually discharge gas.

[0076] As shown in Figure 5 An engine intake and gas discharge management device, comprising: a first judgment unit 100, a second judgment unit 200, a third judgment unit 300, an opening degree abnormal unit 400 and an opening degree normal unit 500;

[0077] The first judgment unit 100 is configured to judge whether the intake pressure of the engine is less than a preset gas discharge valve opening pressure of the engine.

[0078] The second judgment unit 200 is configured to, if the intake pressure is not less than the gas discharge valve opening pressure, judge whether the gas discharge pressure of the engine is greater than 0 after a duration that the intake pressure is not less than the gas discharge valve opening pressure reaches a first time length.

[0079] The third judgment unit 300 is configured to, if the gas discharge pressure is greater than 0, judge whether the intake pressure of the engine is greater than a preset intake pressure limit value of the engine, wherein the intake pressure limit value represents a pressure limit value after the gas discharge valve of the engine is opened.

[0080] The opening degree abnormal unit 400 is configured to, if the intake pressure is greater than the intake pressure threshold value, determine that the opening degree of the gas discharge valve is abnormal.

[0081] The opening degree normal unit 500 is configured to, if the intake pressure is not greater than the intake pressure threshold value, determine that the opening degree of the gas discharge valve is normal.

[0082] Optionally, in some optional embodiments, the device further comprises a fourth judging unit;

[0083] The fourth judging unit is configured to, after judging whether the intake pressure of the engine is less than the opening pressure of the exhaust valve of the engine, if the intake pressure is less than the opening pressure of the exhaust valve, determine whether the opening degree of the intake valve is normal according to the exhaust pressure of the engine after the duration that the intake pressure is less than the opening pressure of the exhaust valve reaches the first time length.

[0084] Optionally, in some optional embodiments, the fourth judging unit comprises a fourth judging sub-unit, an abnormal opening sub-unit and a normal working sub-unit.

[0085] The fourth judging sub-unit is configured to, after the duration that the intake pressure is less than the opening pressure of the exhaust valve reaches the first time length, judge whether the exhaust pressure of the engine is greater than 0.

[0086] The abnormal opening sub-unit is configured to, if the exhaust pressure of the engine is greater than 0, determine that the exhaust valve is abnormally opened.

[0087] The normal working sub-unit is configured to, if the exhaust pressure of the engine is not greater than 0, determine that the exhaust valve is normal.

[0088] Optionally, in some optional embodiments, the device further comprises an abnormal non-opening unit.

[0089] The abnormal non-opening unit is configured to, after judging whether the exhaust pressure of the engine is greater than 0 if the intake pressure is not less than the opening pressure of the exhaust valve after the duration that the intake pressure is not less than the opening pressure of the exhaust valve reaches the first time length, if the exhaust pressure is not greater than 0, determine that the exhaust valve is abnormally not opened.

[0090] Optionally, in some optional embodiments, the device further comprises a first troubleshooting unit.

[0091] The first troubleshooting unit is configured to, after determining that the exhaust valve is abnormally not opened if the exhaust pressure is not greater than 0, troubleshoot the exhaust valve and control the maximum allowable operating load of the engine to be unable to exceed the minimum limit load of over-blowing pressure.

[0092] Optionally, in some optional embodiments, the device further comprises a second troubleshooting unit.

[0093] The second troubleshooting unit is configured to troubleshoot the bleed valve and control the maximum allowable operating load of the engine to be unable to exceed the minimum limit load of the supercharged pressure after determining that the opening degree of the bleed valve is abnormal.

[0094] The application provides a computer readable storage medium, which stores a program, and the program is executed by a processor to implement the engine intake and bleed management method.

[0095] As shown in Figure 6 The application provides an electronic device 70, which comprises at least one processor 701, at least one memory 702 connected with the processor 701, and a bus 703; the processor 701 and the memory 702 complete mutual communication through the bus 703; the processor 701 is used for calling program instructions in the memory 702 to execute the engine intake and bleed management method.

[0096] In the application, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitation, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0097] Each embodiment in the specification is described in a relevant manner, and the same or similar parts between each embodiment can be referred to each other, and each embodiment mainly explains the difference from other embodiments. Especially, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant part can be referred to the part of the method embodiment.

[0098] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined in the application can be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, the application will not be limited to the embodiments shown in the application, but will conform to the widest scope consistent with the principles and novel features disclosed in the application.

[0099] The above descriptions are only the preferable embodiments of the present application, not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for managing engine intake and exhaust gas, characterized in that, include: Determine whether the engine's intake pressure is less than the engine's preset bleed valve opening pressure; If the intake pressure is not less than the vent valve opening pressure, then after the duration of the intake pressure being not less than the vent valve opening pressure reaches a first time length, it is determined whether the engine vent pressure is greater than 0. If the venting pressure is greater than 0, then it is determined whether the engine intake pressure is greater than the engine's preset intake pressure limit, wherein the intake pressure limit represents the pressure limit after the engine's venting valve is opened. If the intake pressure is greater than the intake pressure limit, the opening of the vent valve is determined to be abnormal; the vent valve is troubleshooted, and the maximum allowable operating load of the engine is controlled to not exceed the minimum over-explosion pressure limit load; If the intake pressure is not greater than the intake pressure limit, then the opening of the vent valve is determined to be normal. If the intake pressure is less than the vent valve opening pressure, then after the duration of the intake pressure being less than the vent valve opening pressure reaches the first time length, the opening degree of the vent valve is determined to be normal based on the engine's vent pressure.

2. The method according to claim 1, characterized in that, After the duration during which the intake pressure is less than the vent valve opening pressure reaches the first time length, determining whether the opening degree of the vent valve is normal based on the engine's vent pressure includes: After the duration during which the intake pressure is less than the opening pressure of the vent valve reaches the first time length, it is determined whether the vent pressure of the engine is greater than 0. If the venting pressure of the engine is greater than 0, it is determined that the venting valve is abnormally open. If the venting pressure of the engine is not greater than 0, then the venting valve is considered to be functioning normally.

3. The method according to claim 1, characterized in that, If the intake pressure is not less than the vent valve opening pressure, and after the duration of the intake pressure being not less than the vent valve opening pressure reaches a first time length, the method further includes determining whether the engine's vent pressure is greater than 0. If the venting pressure is not greater than 0, then the venting valve is determined to be abnormally not open.

4. The method according to claim 3, characterized in that, After determining that the vent valve is abnormally not open if the vent pressure is not greater than 0, the method further includes: Troubleshoot the vent valve and ensure that the maximum permissible operating load of the engine does not exceed the minimum over-explosion pressure limit.

5. An engine intake and exhaust management device, characterized in that, include: First judgment unit, second judgment unit, third judgment unit, second investigation unit, fourth judgment unit, abnormal opening unit, and normal opening unit; The first judgment unit is used to determine whether the intake pressure of the engine is less than the preset opening pressure of the exhaust valve of the engine. The second judgment unit is used to determine whether the exhaust pressure of the engine is greater than 0 after the duration of the intake pressure not being less than the exhaust valve opening pressure reaches a first time length if the intake pressure is not less than the exhaust valve opening pressure. The third judgment unit is used to determine whether the intake pressure of the engine is greater than the preset intake pressure limit of the engine if the venting pressure is greater than 0, wherein the intake pressure limit represents the pressure limit after the venting valve of the engine is opened. The abnormal opening unit is used to determine that the opening of the vent valve is abnormal if the intake pressure is greater than the intake pressure limit. The second troubleshooting unit is used to troubleshoot the vent valve after determining that the opening of the vent valve is abnormal if the intake pressure is greater than the intake pressure threshold, and to control the maximum allowable operating load of the engine to not exceed the minimum over-explosion pressure limit load. The normal opening unit is used to determine that the opening of the vent valve is normal if the intake pressure is not greater than the intake pressure limit. The fourth judgment unit is used to determine whether the opening degree of the vent valve is normal after judging whether the intake pressure of the engine is less than the preset opening pressure of the vent valve. If the intake pressure is less than the opening pressure of the vent valve, the unit determines whether the opening degree of the vent valve is normal based on the vent pressure of the engine after the duration of the intake pressure being less than the opening pressure of the vent valve reaches the first time length.

6. A computer-readable storage medium having a program stored thereon, characterized in that, When the program is executed by the processor, it implements the engine intake and exhaust management method as described in any one of claims 1 to 4.

7. An electronic device, characterized in that, The electronic device includes at least one processor, and at least one memory and a bus connected to the processor; wherein the processor and the memory communicate with each other through the bus; the processor is used to call program instructions in the memory to execute the engine intake and exhaust management method as described in any one of claims 1 to 4.

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