Engine pressure relief method, device, vehicle and storage medium

Abstract

The present invention relates to the technical field of vehicles, and particularly to a pressure relief method, device, vehicle and storage medium for an engine. The method includes: detecting whether the engine meets a preset pressure relief condition; if the engine meets the preset pressure relief condition, detecting the closing moment of the throttle valve of the engine, and determining an opening interval of the pressure relief valve of the engine according to the closing moment and the moment when the pressure relief noise is generated; within the opening interval, opening the pressure relief valve to relieve pressure. Thus, the present invention can avoid the generation of pressure relief noise due to the relatively high gas pressure in the pipeline of the engine by relieving pressure in a timely manner, achieve the purpose of protecting the pipeline and reducing the pressure relief noise, and further achieve a better noise reduction effect without setting up a sound absorption device; the solution is intelligent in operation and low in cost, meets the actual use requirements, and improves the user experience.

Description

Technical Field

[0001] The present invention relates to the technical field of automobiles, and particularly relates to a pressure relief method, device, vehicle and storage medium for an engine. Background Art

[0002] In the case of rapid fuel cut-off of a vehicle, due to inertia, the turbine of the supercharger still rotates at a high speed, maintaining more than tens of thousands of revolutions per minute. Air is continuously compressed and enters the intake pipe, and the pressure in the intake pipe increases. It is necessary to open the pressure relief valve to reduce the gas pressure in the intake pipe; during this pressure relief process, the noise generated by the pressure relief becomes more and more obvious as the intake air flow of the engine increases.

[0003] With the development of automotive technology, hybrid power has gradually become the mainstream, and the market's requirements for the efficiency of hybrid engines and the NVH (Noise, Vibration, Harshness) quietness have also increased accordingly.

[0004] In related technologies, a method of adding a muffler to the pressure relief pipeline, increasing the thickness of the sound-absorbing cotton in the vehicle, using double-layer laminated glass, etc. can be used to achieve the purpose of reducing the pressure relief noise; however, the related technical solutions need to add relevant equipment to achieve the purpose of reducing the pressure relief noise, with high costs, poor intelligence of the solutions, and affecting the user experience. Summary of the Invention

[0005] In view of this, the present invention aims to propose a pressure relief method for an engine. This method can avoid high gas pressure in the engine pipeline and generate pressure relief noise by timely pressure relief, achieving the purpose of protecting the pipeline and reducing the pressure relief noise. Furthermore, a good noise reduction effect can be achieved without setting up sound insulation equipment; the solution is intelligent in operation, low in cost, meets the actual use needs, and improves the user experience.

[0006] To achieve the above object, the technical solution of the present invention is realized as follows:

[0007] A pressure relief method for an engine includes: detecting whether the engine meets a preset pressure relief condition; if the engine meets the preset pressure relief condition, detecting the closing moment of the throttle of the engine, and determining the opening interval of the pressure relief valve of the engine according to the closing moment and the moment when the pressure relief noise is generated; within the opening interval, opening the pressure relief valve to relieve pressure.

[0008] Further, before determining the opening interval of the pressure relief valve of the engine according to the closing moment and the moment when the pressure relief noise is generated, it further includes: obtaining a first preset duration from the closing of the throttle to the generation of the pressure relief noise when the pressure relief valve relieves pressure; calculating the moment when the pressure relief noise is generated according to the closing moment and the first preset duration.

[0009] Further, the obtaining of the first preset duration from the closing of the throttle valve to the pressure relief of the pressure relief valve to generate a pressure relief noise includes: obtaining the model of the engine; using the model as an index to query a model and preset duration database to obtain the first preset duration corresponding to the model.

[0010] Further, after opening the pressure relief valve for pressure relief, it further includes: obtaining the pressure relief cycle of the pressure relief valve; controlling the pressure relief valve to relieve pressure in a cycle according to the pressure relief cycle until the engine does not meet the preset pressure relief condition, and then closing the pressure relief valve.

[0011] Further, the controlling the pressure relief valve to relieve pressure in a cycle according to the preset pressure relief cycle includes: obtaining the actual duration of the pressure relief valve for pressure relief; if the actual duration is greater than a second preset duration, it is determined that the current pressure relief cycle ends, and it continues to detect whether the engine meets the preset pressure relief condition; if the engine still meets the preset pressure relief condition, the pressure relief valve is controlled to relieve pressure in the next pressure relief cycle.

[0012] Further, before continuing to detect whether the engine meets the preset pressure relief condition, it further includes: detecting the actual speed of the supercharger of the engine; if the actual speed is greater than a speed threshold, the duration of the current pressure relief cycle is extended to a target duration.

[0013] Further, the detecting whether the engine meets the preset pressure relief condition includes: obtaining the actual opening of the accelerator pedal and the actual pressure of the supercharger of the engine; if the actual opening is less than or equal to a preset opening and the actual pressure is greater than a pressure threshold, it is determined that the engine meets the preset pressure relief condition, otherwise it is determined that the engine does not meet the preset pressure relief condition.

[0014] Compared with the prior art, the pressure relief method of the engine according to the present invention has the following advantages:

[0015] The pressure relief method of the engine according to the present invention can timely open the pressure relief valve for pressure relief when the throttle valve is closed by linking the throttle valve and the pressure relief valve; due to timely pressure relief, it can effectively avoid the accumulation of gas in the pipeline of the engine, resulting in high pressure relief noise caused by gas pressure, so as to achieve the purpose of protecting the pipeline and reducing the relief noise, and further, a good noise reduction effect can be achieved without setting a silencing device; the solution is intelligent in operation and low in cost, meeting the actual use needs and improving the user experience.

[0016] Another object of the present invention is to provide a pressure relief device for an engine, which can avoid the generation of pressure relief noise due to high gas pressure in the pipeline of the engine by timely relieving pressure, achieve the purpose of protecting the pipeline and reducing the relief noise, and thus achieve a good noise reduction effect without setting up a sound insulation device; the scheme is intelligent in operation and low in cost, meets the actual use needs, and improves the user experience.

[0017] To achieve the above object, the technical solution of the present invention is realized as follows:

[0018] A pressure relief device for an engine, comprising: a detection module for detecting whether the engine meets a preset pressure relief condition; a processing module for detecting the closing moment of the throttle valve of the engine if the engine meets the preset pressure relief condition, and determining an opening interval of a pressure relief valve of the engine according to the closing moment and the moment when pressure relief noise is generated; a pressure relief module for opening the pressure relief valve to relieve pressure within the opening interval.

[0019] Further, before determining the opening interval of the pressure relief valve of the engine according to the closing moment and the moment when pressure relief noise is generated, the processing module is further configured to: obtain a first preset duration from the closing of the throttle valve to the generation of pressure relief noise when the pressure relief valve relieves pressure; calculate the moment when the pressure relief noise is generated according to the closing moment and the first preset duration.

[0020] Further, the processing module is further configured to: obtain the model of the engine; query a model and preset duration database with the model as an index to obtain the first preset duration corresponding to the model.

[0021] Further, after opening the pressure relief valve to relieve pressure, the pressure relief module is further configured to: obtain a pressure relief cycle of the pressure relief valve; control the pressure relief valve to relieve pressure in a cycle according to the pressure relief cycle until the engine does not meet the preset pressure relief condition, and then close the pressure relief valve.

[0022] Further, the pressure relief module is further configured to: obtain an actual duration of the pressure relief valve relieving pressure; if the actual duration is greater than a second preset duration, determine that the current pressure relief cycle ends, and continue to detect whether the engine meets the preset pressure relief condition; if the engine still meets the pressure relief condition, control the pressure relief valve to relieve pressure in the next pressure relief cycle.

[0023] Further, the detection module is further configured to: detect an actual speed of a supercharger of the engine before continuing to detect whether the engine meets the pressure relief condition; if the actual speed is greater than a speed threshold, extend the duration of the current pressure relief cycle to a target duration.

[0024] Further, the detection module is further configured to: obtain the actual opening degree of the accelerator pedal and the actual pressure of the supercharger of the engine; if the actual opening degree is less than or equal to a preset opening degree and the actual pressure is greater than a pressure threshold value, determine that the engine meets the pressure relief condition; otherwise, determine that the engine does not meet the pressure relief condition.

[0025] The pressure relief device of the engine and the above-mentioned pressure relief method of the engine have the same advantages over the prior art, which will not be elaborated here.

[0026] Another object of the present invention is to provide a vehicle, which can avoid the pressure relief noise caused by the high gas pressure in the pipeline of the engine through timely pressure relief, achieve the purpose of protecting the pipeline and reducing the pressure relief noise, and further achieve a good noise reduction effect without setting a silencing device; the scheme is intelligent in operation and low in cost, meets the actual use requirements, and improves the user experience.

[0027] To achieve the above object, the technical solution of the present invention is realized as follows:

[0028] A vehicle includes the pressure relief device of the engine as described in the above embodiment.

[0029] The vehicle and the above-mentioned pressure relief device of the engine have the same advantages over the prior art, which will not be elaborated here.

[0030] Another object of the present invention is to provide a computer storage device, and this computer-readable storage medium can be used to execute and implement the pressure relief method of the engine in the above embodiment.

[0031] To achieve the above object, the technical solution of the present invention is realized as follows:

[0032] A computer-readable storage medium stores a computer program, and this program is executed by a processor to implement the pressure relief method of the engine in the above embodiment.

[0033] The computer-readable storage medium and the above-mentioned pressure relief method of the engine have the same advantages over the prior art, which will not be elaborated here. Description of the Drawings

[0034] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0035] Figure 1 It is a structural diagram of an engine in the related art;

[0036] Figure 2Flow chart of the pressure relief method for the engine according to the embodiment of the present invention;

[0037] Figure 3 Structural diagram of the engine according to the embodiment of the present invention;

[0038] Figure 4 Flow chart of the pressure relief method for the engine according to an embodiment of the present invention;

[0039] Figure 5 Example diagram of the pressure relief device for the engine according to the embodiment of the present invention. Detailed implementation manners

[0040] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0041] In the related art, a method for eliminating the exhaust noise with a muffler is usually used. For example Figure 1 As shown: after the air enters the air inlet, it flows through the air filter, the resonator, the supercharger, and the post-compression pipeline in sequence, and then passes through the pressure relief valve switch and the throttle switch respectively; among them, the throttle switch, the intercooler, the intake manifold, and the combustion chamber are arranged in sequence, the pressure relief valve switch is connected to the muffler, and the muffler acts between the air filter and the resonator. The ECU (electronic control unit) can receive the information of the supercharger speed sensor, the supercharger pressure sensor, and the throttle opening sensor to control the pressure relief valve switch and the throttle switch, and use the muffler to eliminate the exhaust noise generated during the pressure relief process.

[0042] However, the related technical solutions need to add relevant equipment to achieve the purpose of reducing the exhaust noise, with a high cost, poor intelligence of the solutions, and affecting the user experience.

[0043] Therefore, the embodiment of the present invention provides a pressure relief method for an engine, which can achieve a good noise reduction effect without setting noise reduction equipment. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0044] Figure 2 is the flow chart of the pressure relief method for the engine according to the embodiment of the present invention.

[0045] As Figure 2 shown, the pressure relief method for the engine according to the embodiment of the present invention includes the following steps:

[0046] Step S101, detecting whether the engine meets the preset pressure relief condition.

[0047] It can be understood that the embodiments of the present invention can detect whether the engine meets the preset pressure relief condition in at least one way, and the preset pressure relief condition can be set or calibrated according to the actual situation, etc., without specific limitation.

[0048] As a possible implementation method, detecting whether the engine meets the preset pressure relief condition includes: obtaining the actual opening of the accelerator pedal and the actual pressure of the supercharger of the engine; if the actual opening is less than or equal to the preset opening and the actual pressure is greater than the pressure threshold, it is determined that the engine meets the preset pressure relief condition, otherwise it is determined that the engine does not meet the preset pressure relief condition.

[0049] Among them, both the preset opening and the pressure threshold can be set or calibrated according to the actual situation. For example, the preset opening can be set to 0, etc. In the following embodiments, the preset opening of 0 will be taken as an example for elaboration, without specific limitation in this regard.

[0050] It can be understood that the embodiments of the present invention can judge whether to trigger the pressure relief of the engine according to the trigger state of the accelerator pedal and the actual pressure of the supercharger, and trigger the pressure relief of the engine when the accelerator pedal is not triggered and the pressure of the supercharger is relatively large, so as to avoid the large pressure in the pipeline of the engine and affect the service life of the engine and the pipeline.

[0051] Therefore, the preset pressure relief condition can be set as the actual opening of the accelerator pedal is less than or equal to the preset opening and the actual pressure of the supercharger is greater than the pressure threshold.

[0052] It should be noted that when the vehicle is in the process of rapid acceleration, there will also be a situation where the pipeline pressure increase is greater than the pressure threshold. At this time, there may be two situations for the throttle opening value: (1) The throttle opening is greater than 0. At this time, the large pipeline pressure is caused by the overshoot of the supercharger PID (proportional-integral-derivative) during rapid vehicle acceleration, and the ECU will not issue a pressure relief instruction; (2) The throttle opening is equal to 0, which means that the vehicle is already in the pressure relief state, and at the same time, there is a rapid acceleration requirement, that is, it can be understood that the vehicle rapidly accelerates after rapidly releasing the accelerator, and the ECU will not issue a pressure relief instruction.

[0053] Step S102, if the engine meets the preset pressure relief condition, then detect the closing moment of the throttle valve of the engine, and determine the opening interval of the pressure relief valve of the engine according to the closing moment and the moment when the pressure relief noise is generated.

[0054] Among them, the moment when the pressure relief noise is generated can be understood as the critical moment when the pressure relief valve starts to generate noise when relieving pressure. For example, if the pressure relief valve starts to generate noise when relieving pressure 30 ms or 40 ms after the throttle valve is closed, it can be determined that the moment corresponding to 30 ms or 40 ms after the throttle valve is closed is the moment when the pressure relief noise is generated.

[0055] It can be understood that in the embodiments of the present invention, the opening interval of the pressure relief valve after the throttle valve is closed is determined by the moment when the pressure relief noise is generated, which can ensure that the pressure relief valve is opened before the noise critical moment after the throttle valve is closed, and avoid the pressure relief noise caused by the large gas pressure in the pipeline due to the untimely opening of the pressure relief valve. Therefore, the embodiments of the present invention do not need to set silencing devices such as Figure 1 as shown, and still can achieve a good silencing effect. And as Figure 3 shown, compared with Figure 1 , the embodiments of the present invention cancel silencing devices such as mufflers.

[0056] In the embodiments of the present invention, before determining the opening interval of the pressure relief valve of the engine according to the closing moment and the moment when the pressure relief noise is generated, it further includes: obtaining a first preset duration from the closing of the throttle valve to the generation of the pressure relief noise when the pressure relief valve relieves pressure; calculating the moment when the pressure relief noise is generated according to the closing moment and the first preset duration.

[0057] It can be understood that the embodiments of the present invention need to control the opening timing of the pressure relief valve, compress the time interval between the closing of the engine throttle valve and the opening of the pressure relief valve within a preset interval, so that the pressure relief valve is immediately opened after the throttle valve is closed, reduce the accumulation of gas in the pipeline after the throttle valve is closed, and avoid the generation of pressure relief noise due to the high gas pressure in the engine pipeline, so as to achieve the purpose of reducing the pressure relief noise.

[0058] Wherein, the first preset duration refers to the critical duration when the noise starts to be generated when the pressure relief valve relieves pressure after the throttle valve is closed, which can be specifically calibrated, or specifically set according to the noise experience in the actual use process of the user. For example, the first preset duration can be set to a millisecond-level duration, such as 30ms or 40ms, etc., without specific limitation.

[0059] As a possible implementation manner, obtaining the first preset duration from the closing of the throttle valve to the generation of the pressure relief noise when the pressure relief valve relieves pressure includes: obtaining the model of the engine; using the model as an index to query the model and the preset duration database to obtain the first preset duration corresponding to the model.

[0060] Wherein, the database stores the corresponding relationship data between the models of the engines pre-calibrated and the preset durations.

[0061] It can be understood that since the preset durations corresponding to different engines are different, the embodiments of the present invention can determine the preset duration according to the engine model and relieve pressure according to the actual situation of the engine to ensure the noise reduction effect during pressure relief.

[0062] Step S103, within the opening interval, open the pressure relief valve to relieve pressure.

[0063] It can be understood that since it can be ensured within the opening interval that the pressure relief valve is opened before the noise critical moment arrives after the throttle valve is closed, in the embodiment of the present invention, the pressure relief valve is opened to relieve pressure within the opening interval, that is, the pressure relief valve is opened in time after the throttle valve is closed. Since the pressure relief valve is opened in time, gas in the pipeline will not accumulate too much, so it can effectively avoid the pressure relief noise caused by the large gas pressure in the pipeline due to the untimely opening of the pressure relief valve, achieving the purpose of protecting the pipeline and reducing the gas release noise. Furthermore, a good noise reduction effect can be achieved without setting a sound insulation device; the solution is intelligent in operation and low in cost, meeting the actual use needs and improving the user experience.

[0064] In the embodiment of the present invention, after opening the pressure relief valve to relieve pressure, it further includes: obtaining the pressure relief cycle of the pressure relief valve; controlling the pressure relief valve to relieve pressure in a cycle according to the pressure relief cycle until the engine does not meet the preset pressure relief condition, and then closing the pressure relief valve.

[0065] It can be understood that as Figure 3 shown, in the embodiment of the present invention, the rotational speed sensor, boost pressure sensor and throttle opening sensor of the supercharger can be used in cooperation to obtain the supercharger data of the vehicle, and judge whether it is necessary to continue relieving pressure after the pressure relief cycle. In the case where it is necessary to continue relieving pressure, enter the cycle control, and in the case where there is no need to relieve pressure, close the pressure relief valve to complete the pressure relief process; thus, the embodiment of the present invention can improve the completeness and comprehensiveness of the control of the pressure relief process, making the control scheme more intelligent, protecting the pipeline and the vehicle, meeting the actual use needs and improving the user experience. Among them, the cycle control of the embodiment of the present invention is specifically as follows:

[0066] In the embodiment of the present invention, controlling the pressure relief valve to relieve pressure in a cycle according to the preset pressure relief cycle includes: obtaining the actual duration of the pressure relief valve to relieve pressure; if the actual duration is greater than the second preset duration, it is determined that the current pressure relief cycle ends, and continue to detect whether the engine meets the preset pressure relief condition; if the engine still meets the preset pressure relief condition, control the pressure relief valve to relieve pressure in the next pressure relief cycle.

[0067] Among them, the second preset duration can be the corresponding duration of the pressure relief cycle, which can be set according to the actual situation, such as it can be set to 2 - 3s, etc., and no specific limitation is made thereto.

[0068] It can be understood that the embodiment of the present invention can realize the intelligent control of the opening and closing of the pressure relief valve and the throttle valve through the periodic control of the internal pressure relief of the transformer, so as to relieve gas in time, achieve the purpose of reducing the gas release noise, improve the intelligence and reliability of the solution, and reduce the damage to the engine pipeline.

[0069] Specifically, as Figure 3As shown in the figure, when the pressure relief duration of the pressure relief valve reaches the second preset duration in the embodiment of the present invention, the actual supercharging pressure and the throttle opening of the gas in the intake pipe can be judged again to continue to check the current pipeline state; when the actual supercharging pressure is less than the supercharging pressure threshold value (at this time, there is no need to judge the throttle opening), the pressure relief valve closes, and the throttle valve is adjusted according to the throttle opening to complete the pressure relief process; when the actual supercharging pressure is greater than the supercharging pressure threshold value and the throttle opening is 0 at this time, the second pressure relief cycle continues; and so on. The embodiment of the present invention can be adjusted periodically until the actual supercharging pressure is less than the supercharging pressure threshold value to complete the pressure relief operation.

[0070] In the embodiment of the present invention, before continuing to detect whether the engine meets the preset pressure relief condition, it further includes: detecting the actual speed of the supercharger of the engine; if the actual speed is greater than the speed threshold, the duration of the current pressure relief cycle is extended to the target duration.

[0071] Among them, the acquisition of the actual speed of the engine in the present invention can be achieved by at least one method. For example, as Figure 3 shown, the present invention can use a supercharger speed sensor to obtain it; the preset speed can be set according to the actual situation, and no specific limitation is made thereto.

[0072] It can be understood that when the speed of the supercharger is relatively high, it is still possible to make the gas pressure in the pipeline too high in a short time, and the excessive gas pressure may damage the engine intake pipe or the throttle valve. Therefore, in the embodiment of the present invention, after the end of a pressure relief cycle, the speed of the supercharger can be further judged, and when the speed is relatively high, the opening duration of the pressure relief valve is extended to avoid the excessive gas pressure in the pipeline, thereby avoiding the damage that may be caused to the engine intake pipe or the throttle valve due to excessive pressure.

[0073] The pressure relief method of the engine will be described below through a specific embodiment. Taking the preset opening degree set to 0 as an example, as Figure 4 shown, it includes the following steps:

[0074] Step S1: Obtain the real-time actual supercharging pressure value of the vehicle and the actual throttle opening of the accelerator pedal.

[0075] Step S2: Judge whether the actual throttle opening is less than or equal to the preset opening degree and whether the actual supercharging pressure is greater than the pressure threshold value. Among them, the preset opening degree is 0, that is, judge whether the actual throttle opening is 0; when the actual throttle opening is 0 and the actual supercharging pressure is greater than the pressure threshold value, enter step S3, otherwise enter step S7 without pipeline pressure relief.

[0076] Step S3: Pipeline pressure relief, enter the first pressure relief operation, and after the end of the first pressure relief operation, enter step S4.

[0077] Step S4: Determine whether the supercharger speed exceeds a preset speed; when the supercharger speed is greater than or equal to the preset speed, proceed to step S5, and when the supercharger speed is less than the preset speed, proceed to step S6.

[0078] Step S5: Release the pressure in the pipeline, enter the second pressure release operation, and after the second pressure release operation ends, proceed to step S6.

[0079] Step S6: Determine whether the actual throttle opening of the vehicle's accelerator pedal in real time is 0 and whether the actual supercharging pressure is greater than the pressure threshold. When the actual throttle opening is 0 and the actual supercharging pressure is greater than the pressure threshold, return to step S3, otherwise proceed to step S7.

[0080] Step S7: Do not release the pressure in the pipeline, and the pressure release ends.

[0081] In summary, according to the pressure release method of the engine in the embodiments of the present invention, the throttle valve and the pressure release valve can be linked to open the pressure release valve in time to release the pressure when the throttle valve is closed; because the pressure release is timely, it is possible to effectively avoid the accumulation of gas in the pipeline of the engine, resulting in high pressure release noise caused by gas pressure, so that the purpose of protecting the pipeline and reducing the exhaust noise can be achieved. Furthermore, a good noise reduction effect can be achieved without setting up a sound insulation device; the solution is intelligent in operation and low in cost, meeting the actual use needs and improving the user experience.

[0082] Furthermore, as Figure 5 shown, an embodiment of the present invention also discloses a pressure release device 10 for an engine, which includes: a detection module 100, a processing module 200, and a pressure release module 300.

[0083] Among them, the detection module 100 is used to detect whether the engine meets the preset pressure release conditions; the processing module 200 is used to, if the engine meets the preset pressure release conditions, detect the closing moment of the throttle valve of the engine, and determine the opening interval of the pressure release valve of the engine according to the closing moment and the moment when the pressure release noise is generated; the pressure release module 300 is used to open the pressure release valve to release the pressure within the opening interval.

[0084] In the embodiment of the present invention, before determining the opening interval of the pressure release valve of the engine according to the closing moment and the moment when the pressure release noise is generated, the processing module 200 is further used to: obtain a first preset duration from the closing of the throttle valve to the generation of pressure release noise when the pressure release valve releases the pressure; calculate the moment when the pressure release noise is generated according to the closing moment and the first preset duration.

[0085] In the embodiment of the present invention, the processing module 200 is further used to: obtain the model of the engine; use the model as an index to query the model and preset duration database to obtain the first preset duration corresponding to the model.

[0086] In an embodiment of the present invention, after the pressure relief valve is opened for pressure relief, the pressure relief module 300 is further configured to: obtain the pressure relief cycle of the pressure relief valve; cyclically control the pressure relief valve for pressure relief according to the pressure relief cycle until the engine does not meet the preset pressure relief condition, and then close the pressure relief valve.

[0087] In an embodiment of the present invention, the pressure relief module 300 is further configured to: obtain the actual duration of the pressure relief of the pressure relief valve; if the actual duration is greater than a second preset duration, determine that the current pressure relief cycle ends, and continue to detect whether the engine meets the preset pressure relief condition; if the engine still meets the preset pressure relief condition, control the pressure relief valve to perform pressure relief in the next pressure relief cycle.

[0088] In an embodiment of the present invention, before continuing to detect whether the engine meets the preset pressure relief condition, the pressure relief module 300 is further configured to: detect the actual speed of the supercharger of the engine; if the actual speed is greater than the speed threshold, extend the duration of the current pressure relief cycle to the target duration.

[0089] In an embodiment of the present invention, the detection module 100 is further configured to: obtain the actual opening of the accelerator pedal and the actual pressure of the supercharger of the engine; if the actual opening is less than or equal to the preset opening and the actual pressure is greater than the pressure threshold, determine that the engine meets the preset pressure relief condition, otherwise determine that the engine does not meet the preset pressure relief condition.

[0090] It should be noted that the specific implementation manner of the pressure relief device of the engine in the embodiment of the present invention is similar to the specific implementation manner of the pressure relief method of the engine. To reduce redundancy, it will not be elaborated here.

[0091] According to the pressure relief device of the engine in the embodiment of the present invention, by linking the throttle valve and the pressure relief valve, the pressure relief valve can be opened in time for pressure relief when the throttle valve is closed; because the pressure relief is timely, it can effectively avoid the accumulation of gas in the pipeline of the engine, resulting in high pressure relief noise caused by gas pressure, so as to achieve the purpose of protecting the pipeline and reducing the relief noise. Furthermore, a good noise reduction effect can be achieved without setting a sound insulation device; the scheme is intelligent in operation and low in cost, meeting the actual use needs and improving the user experience.

[0092] Furthermore, an embodiment of the present invention also discloses a vehicle, which may include the pressure relief device of the engine in the above embodiment. Since the pressure relief device of the engine in the above embodiment is provided, by linking the throttle valve and the pressure relief valve, the pressure relief valve can be opened in time for pressure relief when the throttle valve is closed; because the pressure relief is timely, it can effectively avoid the accumulation of gas in the pipeline of the engine, resulting in high pressure relief noise caused by gas pressure, so as to achieve the purpose of protecting the pipeline and reducing the relief noise. Furthermore, a good noise reduction effect can be achieved without setting a sound insulation device; the scheme is intelligent in operation and low in cost, meeting the actual use needs and improving the user experience.

[0093] Furthermore, an embodiment of the present invention also discloses a computer-readable storage medium, on which a computer program is stored, and the program is executed by a processor to implement the pressure relief method of the engine as described in the above embodiment.

[0094] The foregoing is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A pressure relief method for an engine, characterized in that, It includes the following steps: Detect whether the engine meets the preset pressure relief condition; If the engine meets the preset pressure relief condition, detect the closing moment of the throttle valve of the engine, and determine the opening interval of the pressure relief valve of the engine according to the closing moment and the moment when the pressure relief noise is generated; Within the opening interval, open the pressure relief valve to relieve pressure.

2. The pressure relief method of the engine according to claim 1, wherein, Before determining the opening interval of the pressure relief valve of the engine according to the closing moment and the moment when the pressure relief noise is generated, it further includes: Obtain a first preset duration from the closing of the throttle valve to the generation of the pressure relief noise when the pressure relief valve relieves pressure; Calculate the moment when the pressure relief noise is generated according to the closing moment and the first preset duration.

3. The pressure relief method of the engine according to claim 2, wherein, The obtaining of the first preset duration from the closing of the throttle valve to the generation of the pressure relief noise when the pressure relief valve relieves pressure includes: Obtain the model of the engine; Using the model as an index, query the model and preset duration database to obtain the first preset duration corresponding to the model.

4. The pressure relief method of the engine according to claim 1, wherein, After opening the pressure relief valve to relieve pressure, it further includes: Obtain the pressure relief cycle of the pressure relief valve; Control the pressure relief valve to relieve pressure in accordance with the pressure relief cycle until the engine does not meet the preset pressure relief condition, and then close the pressure relief valve.

5. The pressure relief method of the engine according to claim 4, wherein, The controlling the pressure relief valve to relieve pressure in accordance with the pressure relief cycle includes: Obtain the actual duration of the pressure relief valve relieving pressure; If the actual duration is greater than a second preset duration, determine that the current pressure relief cycle ends, and continue to detect whether the engine meets the preset pressure relief condition; If the engine still meets the preset pressure relief condition, control the pressure relief valve to relieve pressure in the next pressure relief cycle.

6. The pressure relief method of the engine according to claim 5, characterized in that, Before continuing to detect whether the engine meets the preset pressure relief condition, it further includes: Detect the actual speed of the supercharger of the engine; If the actual speed is greater than the speed threshold, extend the duration of the current pressure relief cycle to the target duration.

7. The pressure relief method of the engine according to claim 1, wherein The detecting whether the engine meets the preset pressure relief condition includes: Obtain the actual opening of the accelerator pedal and the actual pressure of the supercharger of the engine; If the actual opening is less than or equal to the preset opening and the actual pressure is greater than the pressure threshold, determine that the engine meets the preset pressure relief condition, otherwise determine that the engine does not meet the preset pressure relief condition.

8. A pressure relief device for an engine, characterized in that, It includes: A detection module, used to detect whether the engine meets the preset pressure relief condition; A processing module, used to, if the engine meets the preset pressure relief condition, detect the closing moment of the throttle valve of the engine, and determine the opening interval of the pressure relief valve of the engine according to the closing moment and the moment when the pressure relief noise is generated; A pressure relief module, used to open the pressure relief valve to relieve pressure within the opening interval.

9. A vehicle, characterized in that, It includes a pressure relief device for the engine as described in claim 8.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, This program is executed by a processor to implement the pressure relief method for the engine as described in any one of claims 1-7.

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