Engine air inlet and air outlet management method and related device

Abstract

The invention discloses an engine air inlet and air outlet management method and a related device. Whether the air inlet pressure of an engine is smaller than the preset air outlet valve opening pressure or not can be judged; if the air inlet pressure is not smaller than the opening pressure of the deflation valve, whether the deflation pressure of the engine is larger than 0 or not is judged after the duration time that the air inlet pressure is not smaller than the opening pressure of the deflation valve reaches a first time length; if the deflation pressure is larger than 0, whether the air inlet pressure of the engine is larger than a preset air inlet pressure limiting value of the engine or not is judged, and the air inlet pressure limiting value represents the pressure limiting value after a deflation valve of the engine is opened; if the air inlet pressure is larger than the air inlet pressure threshold value, it is determined that the opening degree of an air release valve is abnormal; and if the air inlet pressure is not larger than the air inlet pressure threshold value, it is determined that the opening degree of the deflation valve is normal. The opening degree of the deflation valve can be accurately recognized based on the air inlet pressure and the deflation pressure so as to judge whether the opening degree of the air inlet valve is abnormal or not, and the recognition effect is objective, accurate, timely and efficient.

Description

Technical Field

[0001] The present invention relates to the field of engines, and in particular to an engine intake and exhaust management method and related devices. Background Art

[0002] The application of turbocharging technology in engines has become common. The main purpose is to increase the pressure of the air after it is supercharged by the supercharger and then cooled by the intercooler before entering the combustion chamber. The supercharger increases the pressure of the compressed air under normal load to increase the excess air coefficient. The negative impact of this measure is that the high-load compressed air pressure is too high, resulting in excessive combustion pressure in the cylinder, and even the risk of exceeding the designed explosion pressure, affecting the reliability of the engine.

[0003] In order to eliminate the above effects, an intake bleed valve is generally added and the opening pressure is set. When the intake pressure reaches the set value, the bleed valve opens to bleed air, thereby reducing the intake and the combustion pressure in the cylinder. However, there is currently no means to monitor the bleed valve. Therefore, how to accurately monitor the health status of the bleed valve has become a technical problem that needs to be solved urgently by people in this field. Summary of the invention

[0004] In view of the above problems, the present invention provides an engine intake and exhaust gas management method and related devices that overcome the above problems or at least partially solve the above problems.

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

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

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

[0008] If the exhaust pressure is greater than 0, determining whether the intake pressure of the engine is greater than a preset intake pressure limit of the engine, wherein the intake pressure limit represents the pressure limit after the exhaust valve of the engine is opened;

[0009] If the intake pressure is greater than the intake pressure threshold, determining that the opening of the air release valve is abnormal;

[0010] If the intake pressure is not greater than the intake pressure threshold, it is determined that the opening of the purge valve is normal.

[0011] Optionally, in certain optional embodiments, after determining whether the intake pressure of the engine is less than a preset purge valve opening pressure of the engine, the method further includes:

[0012] If the intake pressure is lower than the purge valve opening pressure, after the duration of the intake pressure being lower than the purge valve opening pressure reaches the first time length, it is determined whether the opening of the intake valve is normal according to the purge pressure of the engine.

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

[0014] After the duration of the intake pressure being less than the purge valve opening pressure reaches the first time length, determining whether the purge 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 certain optional embodiments, if the intake pressure is not less than the purge valve opening pressure, after the duration of the intake pressure not less than the purge valve opening pressure reaches a first time length, after determining whether the purge pressure of the engine is greater than 0, the method further includes:

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

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

[0020] The exhaust valve is troubleshooted and the maximum allowable operating load of the engine is controlled to not exceed the minimum limit load of the over-explosion pressure.

[0021] Optionally, in certain optional embodiments, after determining that the opening of the purge valve is abnormal if the intake pressure is greater than the intake pressure threshold, the method further includes:

[0022] The exhaust valve is troubleshooted and the maximum allowable operating load of the engine is controlled to not exceed the minimum limit load of the over-explosion pressure.

[0023] In a second aspect, an engine intake and exhaust management device includes: a first judgment unit, a second judgment unit, a third judgment unit, an abnormal opening unit, and a normal opening unit;

[0024] The first judgment unit is used to judge whether the intake pressure of the engine is less than the preset opening pressure of the exhaust valve of the engine;

[0025] The second judgment unit is used to judge whether the exhaust pressure of the engine is greater than 0 after the duration of the intake pressure not 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;

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

[0027] The abnormal opening unit is used to determine that the opening of the air release valve is abnormal if the intake pressure is greater than the intake pressure threshold;

[0028] The normal opening unit is used to determine that the opening of the air release valve is normal if the intake pressure is not greater than the intake pressure threshold.

[0029] Optionally, in some optional implementations, the device further includes: a fourth judgment unit;

[0030] The fourth judgment unit is used to determine whether the opening degree of the intake valve is normal according to the exhaust pressure of the engine after judging whether the intake pressure of the engine is less than the preset exhaust valve opening pressure of the engine. If the intake pressure is less than the exhaust valve opening pressure, then after the duration of the intake pressure being less than the exhaust valve opening pressure reaches the first time length, determine whether the opening degree of the intake valve is normal according to the exhaust pressure of the engine.

[0031] In a third aspect, a computer-readable storage medium stores a program, which, when executed by a processor, implements any of the above-mentioned engine intake and exhaust management methods.

[0032] In a fourth aspect, an electronic device comprises 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 via the bus; and the processor is used to call program instructions in the memory to execute any one of the above-mentioned engine intake and exhaust management methods.

[0033] By means of the above technical scheme, the present invention provides an engine intake and exhaust management method and related device, which can judge whether the intake pressure of the engine is less than the exhaust valve opening pressure preset by the engine; if the intake pressure is not less than the exhaust valve opening pressure, then after the duration of the intake pressure not less than the exhaust valve opening pressure reaches a first time length, judge whether the exhaust pressure of the engine is greater than 0; if the exhaust pressure is greater than 0, judge whether the intake pressure of the engine is greater than the intake pressure limit preset by the engine, wherein the intake pressure limit represents the pressure limit after the exhaust valve of the engine is opened; if the intake pressure is greater than the intake pressure threshold, determine that the opening of the exhaust valve is abnormal; if the intake pressure is not greater than the intake pressure threshold, determine that the opening of the exhaust valve is normal. It can be seen from this that the present invention can accurately identify the opening of the exhaust valve based on the intake pressure and exhaust pressure to determine whether the opening of the intake valve is abnormal, and the identification effect is relatively objective, accurate, timely and efficient.

[0034] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0036] Figure 1 A flow chart showing a first engine intake and exhaust management method provided by the present invention;

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

[0038] Figure 3 A flow chart showing a second engine intake and exhaust management method provided by the present invention;

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

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

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

[0042] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to enable the scope of the present invention to be fully communicated to those skilled in the art.

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

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

[0045] Optionally, the present invention can implant a corresponding intake and bleed air health management program into the engine control system. By operating on the operating screen, it is selected whether to activate the intake and bleed air management program. When it is not activated, an intake and bleed air unmonitored alarm is displayed, and the load limit is executed. The maximum allowable operating load cannot exceed the minimum limit load of the over-explosion pressure; when the program is activated, S100 of the present invention is executed, and this issue does not impose any restrictions on this.

[0046] Optionally, the present invention can obtain the intake pressure after supercharging at the working environment temperature at each load point of the engine through simulation or test calibration; further obtain the intake pressure threshold value for each load point to reach the design explosion pressure through simulation or test calibration;

[0047] For example, for a marine engine, the power is not required to be reduced at 0-45℃. Under the condition of not bleeding, the intake pressure after supercharging at each load point and different temperatures is obtained through simulation as shown in Table 1 below:

[0048] Table 1

[0049]

[0050] After simulation, the intake pressure thresholds for each load point to reach the designed explosion pressure are as follows: Figure 2 The data shown, because the load rate is less than 75% at full operating temperature, the intake pressure will not reach the design explosion pressure threshold, and it can be considered that there is no risk when the load is less than 75%. According to the above data, the parameters of the bleed valve are designed, the opening pressure of the bleed valve is P1, and the intake pressure limit after the bleed valve is opened is P2.

[0051] Each load and intake pressure threshold is imported into ECU. When the intake pressure is ≥ the threshold, the corresponding load rate is not allowed to be exceeded. The load rate limit can be achieved by limiting the oil quantity, and the present invention does not impose any restrictions on this.

[0052] Optionally, the present invention can set the minimum load required to limit the overexplosion pressure to N1, for example, N1 is 75% of the load in the above case.

[0053] Optionally, the present invention may collect the above-mentioned intake pressure through a pressure sensor, and the present invention is not limited to this.

[0054] Optionally, in some optional embodiments, after S100, the method further includes: step 1.1;

[0055] Step 1.1: If the intake pressure is lower than the purge valve opening pressure, after the duration of the intake pressure being lower than the purge valve opening pressure reaches the first time length, determine whether the opening of the intake valve is normal according to the purge pressure of the engine.

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

[0057] For example, in some optional embodiments, the step 1.1 includes: step 2.1, step 2.2 and step 2.3;

[0058] Step 2.1, after the duration of the intake pressure being less than the exhaust valve opening pressure reaches the first time length, determining whether the exhaust pressure of the engine is greater than 0;

[0059] Step 2.2: If the exhaust pressure of the engine is greater than 0, determining that the exhaust valve is abnormally opened;

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

[0061] Optionally, activate the intake and exhaust management program to judge the intake pressure. If the intake pressure is less than the exhaust valve opening pressure after 5S timing, judge whether the exhaust pressure is greater than 0. If there is no exhaust pressure value at this time, it is judged that the exhaust valve is normal and there is no need to execute the load limiting strategy. If the exhaust pressure is greater than 0 at this time, it is judged that the exhaust valve is abnormally open and the fault is repaired. However, the intake pressure is less than the limit value at this time and there is no need to execute the load limiting strategy.

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

[0063] Optionally, in some optional embodiments, after S200, the method further includes: step 3.1;

[0064] Step 3.1: If the deflation pressure is not greater than 0, it is determined that the deflation valve is abnormally not opened.

[0065] Optionally, activate the intake and exhaust management program to judge the intake pressure. If the intake pressure is ≥ the exhaust valve opening pressure after 5S, judge whether the exhaust pressure is greater than 0. If there is no exhaust pressure value at this time, it is judged that the exhaust valve is abnormally not opened and a fault alarm is issued. At the same time, load limitation is executed, and the maximum allowable operating load cannot exceed the minimum limit load N1 of the over-explosion pressure; if the exhaust pressure is greater than 0, judge whether the intake pressure is greater than the intake pressure limit value P2 after the exhaust valve is opened. If the intake pressure is greater than P2, the exhaust valve abnormal opening maintenance alarm is displayed, and the load limitation strategy is executed according to the actual intake pressure; if the intake pressure is ≤ P2, the exhaust valve is operating normally and there is no need to execute the oil limitation strategy.

[0066] Optionally, in certain optional embodiments, after step 3.1, the method further comprises: step 4.1;

[0067] Step 4.1, troubleshoot the exhaust valve and control the maximum allowable operating load of the engine to not exceed the minimum limit load of overexplosion pressure.

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

[0069] S400, if the intake pressure is greater than the intake pressure threshold, determining that the opening of the air release valve is abnormal;

[0070] Optionally, in some optional implementations, after S400, the method further includes: step 5.1;

[0071] Step 5.1, troubleshoot the exhaust valve and control the maximum allowable operating load of the engine to not exceed the minimum limit load of overexplosion pressure.

[0072] S500: If the intake pressure is not greater than the intake pressure threshold, determine that the opening of the air release valve is normal.

[0073] Optionally, in order to clearly describe the detailed scheme of the present invention, the present invention provides Figure 3 The complete flow chart shown in the figure has been explained above and will not be repeated in this article.

[0074] Optionally, in order to cooperate with the above-mentioned solution of the present invention, the present invention also provides the following Figure 4 The system structure diagram shown in FIG. 1 is the intake pipe after the engine is supercharged and intercooled, and the intake pipe has an intake pressure sensor 2, 7 is a bleed pipe connected to the intake pipe, 3 is a bleed valve, and this valve is opened when bleed is needed, 4 and 5 are stop valves, and the stop valve 4 mainly controls the on-off of the entire bleed pipeline, and the stop valve 5 is connected in parallel with the bleed valve 3, and 6 is a bleed pressure sensor, and the sampling point is in the bleed pipe 7, and after the bleed valve 3, the stop valve 4 and the stop valve 5.

[0075] Optionally, stop valve 4 mainly controls the on-off of the entire bleed pipeline. Stop valve 5 is connected in parallel with bleed valve 3. Stop valve 4 is normally open and stop valve 5 is normally closed. When bleed valve 3 opens abnormally but cannot be repaired immediately, stop valve 4 can be closed to avoid affecting engine performance. When bleed valve 3 cannot be opened but cannot be repaired immediately, stop valve 5 can be opened for manual bleed.

[0076] like Figure 5 As shown, an engine intake and exhaust management device includes: a first judgment unit 100, a second judgment unit 200, a third judgment unit 300, an abnormal opening unit 400 and a normal opening unit 500;

[0077] The first judgment unit 100 is used to judge whether the intake pressure of the engine is less than the preset opening pressure of the exhaust valve of the engine;

[0078] The second judgment unit 200 is used to judge whether the exhaust pressure of the engine is greater than 0 after the duration of the intake pressure not 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;

[0079] The third judgment unit 300 is used to judge whether the intake pressure of the engine is greater than a preset intake pressure limit of the engine if the exhaust pressure is greater than 0, wherein the intake pressure limit represents the pressure limit after the exhaust valve of the engine is opened;

[0080] The abnormal opening unit 400 is used to determine that the opening of the purge valve is abnormal if the intake pressure is greater than the intake pressure threshold;

[0081] The normal opening unit 500 is used to determine that the opening of the purge valve is normal if the intake pressure is not greater than the intake pressure threshold.

[0082] Optionally, in some optional implementations, the device further includes: a fourth judgment unit;

[0083] The fourth judgment unit is used to determine whether the opening degree of the intake valve is normal according to the exhaust pressure of the engine after judging whether the intake pressure of the engine is less than the preset exhaust valve opening pressure of the engine. If the intake pressure is less than the exhaust valve opening pressure, then after the duration of the intake pressure being less than the exhaust valve opening pressure reaches the first time length, determine whether the opening degree of the intake valve is normal according to the exhaust pressure of the engine.

[0084] Optionally, in some optional implementations, the fourth judgment unit includes: a fourth judgment subunit, an abnormal opening subunit and a normal working subunit;

[0085] The fourth judgment subunit is used to judge whether the exhaust pressure of the engine is greater than 0 after the duration of the intake pressure being less than the exhaust valve opening pressure reaches the first time length;

[0086] The abnormal opening subunit is used to determine that the air release valve is abnormally opened if the air release pressure of the engine is greater than 0;

[0087] The normal working subunit is used to determine that the exhaust valve is normal if the exhaust pressure of the engine is not greater than 0.

[0088] Optionally, in certain optional embodiments, the device further comprises: an abnormal non-opening unit;

[0089] The abnormal non-opening unit is used to determine whether the exhaust pressure of the engine is greater than 0 after the duration of the intake pressure not 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, and determine that the exhaust valve is abnormally not opened if the exhaust pressure is not greater than 0.

[0090] Optionally, in certain optional embodiments, the device further comprises: a first screening unit;

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

[0092] Optionally, in certain optional embodiments, the device further comprises: a second screening unit;

[0093] The second troubleshooting unit is used to troubleshoot the air release valve after determining that the opening of the air release 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 not to exceed the minimum limit load of the overexplosion pressure.

[0094] The present invention provides a computer-readable storage medium having a program stored thereon, wherein when the program is executed by a processor, the engine intake and exhaust management method described in any one of the above is implemented.

[0095] like Figure 6 As shown, the present invention provides an electronic device 70, which includes at least one processor 701, and at least one memory 702 and a bus 703 connected to the processor 701; wherein the processor 701 and the memory 702 communicate with each other through the bus 703; the processor 701 is used to call the program instructions in the memory 702 to execute any of the above-mentioned engine intake and exhaust management methods.

[0096] In the present invention, relational terms such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0097] Each embodiment in this specification is described in a related manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

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

[0099] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. An engine intake and exhaust management method, characterized in that: include: Determining whether the intake pressure of the engine is less than a preset opening pressure of the exhaust valve of the engine; If the intake pressure is not less than the purge valve opening pressure, after the duration of the intake pressure not less than the purge valve opening pressure reaches a first time length, determining whether the purge pressure of the engine is greater than 0; If the exhaust pressure is greater than 0, determining whether the intake pressure of the engine is greater than a preset intake pressure limit of the engine, wherein the intake pressure limit represents the pressure limit after the exhaust valve of the engine is opened; If the intake pressure is greater than the intake pressure threshold, determining that the opening of the air release valve is abnormal; If the intake pressure is not greater than the intake pressure threshold, it is determined that the opening of the purge valve is normal.

2. The method according to claim 1, characterized in that After determining whether the intake pressure of the engine is less than a preset purge valve opening pressure of the engine, the method further includes: If the intake pressure is lower than the purge valve opening pressure, after the duration of the intake pressure being lower than the purge valve opening pressure reaches the first time length, it is determined whether the opening of the intake valve is normal according to the purge pressure of the engine.

3. The method according to claim 1, characterized in that After the duration of the intake pressure being less than the opening pressure of the exhaust valve reaches the first time length, determining whether the opening of the intake valve is normal according to the exhaust pressure of the engine includes: After the duration of the intake pressure being less than the purge valve opening pressure reaches the first time length, determining whether the purge pressure of the engine is greater than 0; If the exhaust pressure of the engine is greater than 0, it is determined that the exhaust valve is abnormally opened; If the exhaust pressure of the engine is not greater than 0, it is determined that the exhaust valve is normal.

4. The method according to claim 1, characterized in that: If the intake pressure is not less than the purge valve opening pressure, after the duration of the intake pressure not less than the purge valve opening pressure reaches a first time length, after determining whether the purge pressure of the engine is greater than 0, the method further includes: If the deflation pressure is not greater than 0, it is determined that the deflation valve is abnormally not opened.

5. The method according to claim 4, characterized in that After determining that the deflation valve is abnormally not opened if the deflation pressure is not greater than 0, the method further includes: The exhaust valve is troubleshooted and the maximum allowable operating load of the engine is controlled to not exceed the minimum limit load of the over-explosion pressure.

6. The method according to claim 1, characterized in that After determining that the opening of the purge valve is abnormal if the intake pressure is greater than the intake pressure threshold, the method further includes: The exhaust valve is troubleshooted and the maximum allowable operating load of the engine is controlled to not exceed the minimum limit load of the over-explosion pressure.

7. An engine air intake and exhaust management device, characterized in that: include: a first judgment unit, a second judgment unit, a third judgment unit, an abnormal opening unit, and a normal opening unit; The first judgment unit is used to judge 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 judge whether the exhaust pressure of the engine is greater than 0 after the duration of the intake pressure not 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 judge whether the intake pressure of the engine is greater than a preset intake pressure limit of the engine if the exhaust pressure is greater than 0, wherein the intake pressure limit represents the pressure limit after the exhaust valve of the engine is opened; The abnormal opening unit is used to determine that the opening of the air release valve is abnormal if the intake pressure is greater than the intake pressure threshold; The normal opening unit is used to determine that the opening of the air release valve is normal if the intake pressure is not greater than the intake pressure threshold.

8. The device according to claim 7, characterized in that The device further comprises: a fourth judgment unit; The fourth judgment unit is used to determine whether the opening degree of the intake valve is normal according to the exhaust pressure of the engine after judging whether the intake pressure of the engine is less than the preset exhaust valve opening pressure of the engine. If the intake pressure is less than the exhaust valve opening pressure, then after the duration of the intake pressure being less than the exhaust valve opening pressure reaches the first time length, determine whether the opening degree of the intake valve is normal according to the exhaust pressure of the engine.

9. A computer-readable storage medium having a program stored thereon, characterized in that: When the program is executed by a processor, the engine intake purge gas management method according to any one of claims 1 to 6 is implemented.

10. 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 6.

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