A spoiler control method and related apparatus

Abstract

The application provides a turbulence component control method and related device, and relates to the technical field of noise reduction. A valve core of a surge valve is provided with a turbulence component, the turbulence component is provided with a hole structure, the structural features of the hole structures in different regions in a specific direction of the turbulence component are different, a traction device of the turbulence component can drive the turbulence component to move in the specific direction, so that the air outlet of the surge valve is located at different regions of the turbulence component, and thus the hole structures with different structural features can be used for noise reduction according to different air exhaust noises. On the basis of the structure, if it is determined that the supercharger is in a surge working condition, the pressure change rate before the throttle valve of the surge valve is calculated, the moving stroke of the traction device is determined according to the pressure change rate, the traction device drives the turbulence component to move in the specific direction according to the moving stroke, so that the hole structure located at the air outlet matches the current pressure change rate, and the air exhaust noise of the surge valve can be reduced to the maximum extent.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of noise reduction, in particular to a spoiler control method and related device. BACKGROUND

[0002] Under the condition of natural gas engine load reduction, the electronic throttle valve is suddenly closed, the pressure before the throttle valve is suddenly increased, the intake flow is suddenly reduced, and the supercharger appears surge. In order to reduce the probability of surge of the supercharger, a surge valve is designed. When the electronic throttle valve is suddenly closed, the surge valve is opened to avoid pressure surge and air flow surge, and to avoid surge of the supercharger. However, at the moment when the surge valve is opened, there is a large pressure difference before and after the valve plate, and at this time, the air bleeding using the surge valve will have a bleeding sound. SUMMARY

[0003] In view of the above problems, the present application provides a spoiler control method and related device to achieve the purpose of reducing the noise of the surge valve air bleeding. The specific scheme is as follows:

[0004] The first aspect of the present application provides a spoiler control method, a valve core of a surge valve is provided with a spoiler; the spoiler is provided with a hole structure, the structure characteristics of the hole structure in different regions along a specific direction of the spoiler are different; a traction device of the spoiler can drive the spoiler to move along the specific direction, so that the air bleeding outlet of the surge valve is located in different regions of the spoiler;

[0005] The spoiler control method comprises:

[0006] Under the condition that the supercharger is in surge condition, the pressure change rate before the throttle valve of the surge valve is calculated;

[0007] According to the pressure change rate, the moving stroke of the traction device is determined;

[0008] The traction device is controlled to drive the spoiler to move along the specific direction according to the moving stroke.

[0009] In a possible implementation, the pressure change rate before the throttle valve of the surge valve is calculated, comprising:

[0010] The pressure value before the throttle valve is obtained;

[0011] According to the change information of the pressure value, the pressure change rate before the throttle valve of the surge valve is calculated.

[0012] In a possible implementation, according to the pressure change rate, the moving stroke of the traction device is determined, comprising:

[0013] calculating the intake pressure before the throttle valve according to the opening of the throttle valve, the pressure value before the throttle valve, the engine speed and the accelerator opening;

[0014] calculating the air bleed amount of the surge valve according to the intake pressure before the throttle valve;

[0015] calculating the moving stroke of the traction device according to the air bleed amount of the surge valve and the pressure change rate.

[0016] In a possible implementation, the calculating the air bleed amount of the surge valve according to the intake pressure before the throttle valve comprises:

[0017] obtaining the engine speed and the intake pipe volume;

[0018] calculating the air bleed amount of the surge valve according to the intake pressure before the throttle valve, the engine speed and the intake pipe volume.

[0019] In a possible implementation, the calculating the moving stroke of the traction device according to the air bleed amount of the surge valve and the pressure change rate comprises:

[0020] determining the stroke control feedforward value corresponding to the air bleed amount of the surge valve, and determining the reference value of the pressure change rate corresponding to the air bleed amount of the surge valve;

[0021] calculating the stroke correction value according to the pressure change rate and the reference value of the pressure change rate;

[0022] calculating the moving stroke of the traction device according to the stroke control feedforward value and the stroke correction value.

[0023] In a possible implementation, the determining the stroke control feedforward value corresponding to the air bleed amount of the surge valve, and the determining the reference value of the pressure change rate corresponding to the air bleed amount of the surge valve comprise:

[0024] querying a mapping relationship between the air bleed amount of the surge valve and the stroke control feedforward value to obtain the stroke control feedforward value corresponding to the air bleed amount of the surge valve;

[0025] querying a corresponding relationship between the air bleed amount of the surge valve and the reference value of the pressure change rate to obtain the reference value of the pressure change rate corresponding to the air bleed amount of the surge valve.

[0026] In a possible implementation, the determining that the supercharger is in the surge working condition comprises:

[0027] In a case where the opening rate of the throttle valve is less than the opening rate threshold, the pressure value before the throttle valve is greater than the pressure threshold, the engine speed is within the preset speed range, and the pressure difference between the pressure value before the throttle valve and the pressure value after the throttle valve is less than the pressure difference threshold, it is determined that the supercharger is in a surge condition.

[0028] The second aspect of the present application provides a spoiler control device, a valve core of a surge valve is provided with a spoiler; the spoiler is provided with a hole structure, structure features of the hole structure in different regions in a specific direction of the spoiler are different; a traction device of the spoiler can drive the spoiler to move in the specific direction, so that a blow-off outlet of the surge valve is located in different regions of the spoiler.

[0029] The spoiler control device comprises:

[0030] A calculation module is configured to calculate a pressure change rate before the throttle valve of the surge valve in a case where it is determined that the supercharger is in a surge condition.

[0031] A determination module is configured to determine a moving stroke of the traction device according to the pressure change rate.

[0032] A movement control module is configured to control the traction device to drive the spoiler to move in the specific direction according to the moving stroke.

[0033] The third aspect of the present application provides an electronic device, comprising at least one processor and a memory connected to the processor, wherein:

[0034] The memory is configured to store a computer program.

[0035] The processor is configured to execute the computer program, so that the electronic device can implement the spoiler control method.

[0036] The fourth aspect of the present application provides a computer storage medium, the storage medium carries one or more computer programs, when the one or more computer programs are executed by an electronic device, the electronic device can implement the spoiler control method.

[0037] By means of the technical scheme, the application provides a turbulence component control method and related device, in which a valve core of a surge valve is provided with a turbulence component, the turbulence component is provided with a hole structure, the structure features of the hole structure in different regions in a specific direction of the turbulence component are different, a traction device of the turbulence component can drive the turbulence component to move in the specific direction, so that the gas leakage outlet of the surge valve is located in different regions of the turbulence component, thereby the hole structure with different structure features can be used for noise reduction according to different gas leakage noises. On the basis of the structure, in the case that it is determined that the supercharger is in a surge working condition, the pressure change rate before the throttle valve of the surge valve is calculated, the moving stroke of the traction device is determined according to the pressure change rate, the traction device is controlled to drive the turbulence component to move in the specific direction according to the moving stroke, so that the hole structure at the gas leakage outlet is matched with the current pressure change rate, and the surge valve gas leakage noise can be reduced to the maximum extent. BRIEF DESCRIPTION OF DRAWINGS

[0038] The above and other features, advantages, and aspects of the present disclosure will become more apparent with reference to the following detailed description when taken in conjunction with the accompanying drawings. Throughout the drawings, the same or similar reference numerals are used to refer to the same or like elements. It is to be understood that the drawings are schematic, and the proportions of the elements and features do not necessarily bear the same scale.

[0039] Figure 1 A structural schematic diagram of a surge valve provided by the related art is shown;

[0040] Figure 2 A structural schematic diagram of a surge valve provided by the application is shown;

[0041] Figure 3 Another structural schematic diagram of a surge valve provided by the application is shown;

[0042] Figure 4 Still another structural schematic diagram of a surge valve provided by the application is shown;

[0043] Figure 5 A flowchart of a turbulence component control method provided by the application is shown;

[0044] Figure 6 A flowchart of a method for calculating a moving stroke provided by the application is shown;

[0045] Figure 7 A flowchart of another method for calculating a moving stroke provided by the application is shown;

[0046] Figure 8 A structural schematic diagram of a turbulence component control device provided by the application is shown;

[0047] Figure 9A structural schematic diagram of an electronic device is provided. DETAILED DESCRIPTION

[0048] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application. The terms used in the embodiment part of the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application.

[0049] The embodiments of the present application are described below in conjunction with the drawings. It is known to those skilled in the art that, with the development of technology and the emergence of new scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0050] The terms "first", "second", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, and this is only a distinguishing way used in the description of the embodiments of the present application to describe the objects with the same attributes. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, so that the processes, methods, systems, products or devices containing a series of units do not have to be limited to those units, but can include other units not clearly listed or inherent to these processes, methods, products or devices.

[0051] Under the condition of reducing load of a natural gas engine, the electronic throttle valve is suddenly closed, the pressure before the throttle valve suddenly increases, the intake flow suddenly decreases, which causes the surge of the supercharger, at this time the supercharging pressure is unstable and airflow noise is generated. In order to reduce the probability of surge of the supercharger, a surge valve is applied to the natural gas engine. When the electronic throttle valve of the natural gas engine is suddenly closed, the surge valve is opened, and the valve before the supercharging air is controlled by the surge valve to avoid pressure surge and airflow surge, and to avoid the surge of the supercharger. However, at the moment when the surge valve is opened, due to the large pressure difference before and after the valve plate, the high-pressure airflow is released instantaneously at the moment when the valve plate is opened, which generates airflow noise, that is, there is air leakage noise when the surge valve is used to release air, the noise is large, which affects the user experience and reduces the user comfort.

[0052] To this end, in an embodiment of the present application, a flow-disrupting member is disposed around the valve core of the surge valve. The flow-disrupting member is provided with a hole-like structure. The structural characteristics of the hole-like structure in different areas along a specific direction of the flow-disrupting member are different. The traction device of the flow-disrupting member can drive the flow-disrupting member to move along the specific direction so that the bleed outlet of the surge valve is located in different areas of the flow-disrupting member. This allows the use of hole-like structures with different structural characteristics to reduce noise according to different bleed noises. Based on this structure, when it is determined that the supercharger is in a surge condition, the pressure change rate before the throttle of the surge valve is calculated. Based on the pressure change rate, the movement stroke of the traction device is determined. The traction device is controlled according to the movement stroke to drive the flow-disrupting member to move along the specific direction so that the hole-like structure located at the bleed outlet matches the current pressure change rate, thereby minimizing the bleed noise of the surge valve.

[0053] Based on the above content, an embodiment of the present application provides a spoiler control method, and the execution entity may be a controller on the vehicle, such as an engine controller, a supercharger controller, an ECU (Electronic Control Unit), etc.

[0054] In one implementation, the schematic diagram of the surge valve structure can be referred to Figure 1 As shown, the surge valve can be mechanically controlled or electronically controlled, and is equipped with an air inlet and an air release outlet. The air entering from the air inlet will flow through the valve core of the surge valve, and then the air will flow from the valve core to the air release outlet. In order to reduce the noise caused by the movement of the valve core, in an embodiment of the present application, a spoiler is provided around the valve core, and the spoiler surrounds the valve core. The spoiler is hollow, and a valve core is provided inside. In one embodiment, the spoiler is consistent with the shape of the valve core, and is elliptical. A hole structure is provided on the spoiler. The hole structure can be a mesh hole structure. The structural schematic diagram of the spoiler can refer to FIG2.

[0055] like Figure 2 As shown, the surge valve includes a vent outlet 1, a housing 2, an electrically controlled flow-disrupting structure 3, an electromagnetic coil 4, an air inlet 5, and a valve core 6. The electrically controlled flow-disrupting structure 3 is the flow-disrupting component in the embodiment of the present application, which surrounds the valve core 6. The porous structure on the flow-disrupting component is circular, but can also be elliptical, rectangular, or other suitable structural shapes based on the flow requirements and airflow pressure of the surge valve. Based on the porous structure provided on the flow-disrupting component, the density of the cavities is used to create different flow fields to achieve the purpose of noise reduction.

[0056] In one embodiment, the structural features of the pore structures in different areas along a specific direction of the spoiler are different. The structural features may include at least one of size and number. Figure 2 As shown, the specific direction can be vertical, and the size of the pore structures in different regions increases from top to bottom. The size of the regions can be configured according to actual conditions, such as including one row of pore structures or two or more rows of pore structures. In addition, the number of pore structures in different regions can change from top to bottom, such as the number of pore structures in the upper region is different from the number of pore structures in the lower region. In addition, the number and size of the pore structures in different regions can change from top to bottom, such as the number and size of the pore structures in the upper region is different from the number and size of the pore structures in the lower region. The configuration can be made according to the flow demand and airflow pressure of the surge valve.

[0057] The air inputted from the air inlet 5 of the surge valve is transmitted to the valve core 6 . The air in the valve core 6 passes through the electrically controlled spoiler structure 3 and is then outputted through the air release outlet 1 of the surge valve.

[0058] In one implementation, the traction device of the spoiler component can drive the spoiler component to move along the specific direction so that the air release outlet of the surge valve is located in different areas of the spoiler component, that is, before and after the spoiler component moves along the specific direction, the structural characteristics of the porous structure of the spoiler component at the air release outlet of the surge valve change.

[0059] like Figure 2 As shown, the electrically controlled spoiler structure 3 includes a traction device 31 and a traction device 32, wherein the traction device 31 and the traction device 32 can be connected by gear transmission, fixation, magnetism, thread, snap, etc. The traction device 31 is in the shape of a vertical bar, a column, etc., and a hole structure may or may not be provided thereon. The traction device 32 surrounds the valve core and a hole structure is provided on the upper side thereof. The traction device 31 drives the traction device 32 to move up and down, so that the air discharge outlet 1 is located in different areas of the spoiler. When the traction device 31 controls the lifting and lowering of the traction device 32, different flow fields are created by lifting and lowering the spoiler to adapt to different flow rates. When the main valve plate is opened, the airflow is rectified by the spoiler to meet the air discharge volume requirement, while improving the airflow uniformity and avoiding the airflow noise caused by sudden pressure release.

[0060] like Figure 2 As shown, the air release outlet 1 is located in the center of the traction device 32, and the size of the hole structure is in the middle. Figure 3 As shown, the air release outlet 1 is located below the traction device 32, and the hole structure is relatively large. Figure 4As shown, the air outlet 1 is located above the pulled device 32, and the hole structure is relatively small. That is, the pulling device of the spoiler can drive the spoiler to move in the specific direction, so that the air outlet 1 uses the hole structures with different structural characteristics to achieve noise reduction. In other words, by controlling the density of the air holes in the air outlet 1, the air flow rate is controlled, thereby reducing the air leakage noise.

[0061] In this embodiment, a flow-turbine component is configured for the surge valve to optimize the uniformity of the airflow field distribution at the deflation outlet, improve the stability and uniformity of the airflow at the deflation outlet, achieve the purpose of noise reduction, and improve user comfort.

[0062] In the above Figures 2-4 Based on the structure of the spoiler component, refer to Figure 5 , a spoiler control method may include:

[0063] S11. When it is determined that the supercharger is in a surge operating condition, calculate a pressure change rate before a throttle of the surge valve.

[0064] In the embodiment of the present application, when the supercharger is in a surge condition, the surge valve needs to be opened, and the surge valve opening moment will appear later. The pressure difference before and after the valve plate is large, and the surge valve deflation has the problem of deflation noise. Therefore, in the embodiment of the present application, the above-mentioned spoiler component is controlled to operate only when it is determined that the supercharger is in a surge condition.

[0065] In one implementation, determining that the supercharger is in a surge condition may include:

[0066] When the throttle opening change rate is less than a change rate threshold, the pre-throttle pressure value is greater than a pressure threshold, the engine speed is within a preset speed range, and the pressure difference between the pre-throttle pressure value and the post-throttle pressure value is less than a pressure difference threshold, it is determined that the supercharger is in a surge condition.

[0067] In specific implementation, the throttle opening signal a, the throttle pre-pressure signal b, the engine speed signal c, and the throttle post-pressure signal d can be collected through sensors and other detection equipment.

[0068] The throttle opening change rate is calculated based on the throttle opening signal a. A change rate threshold a0 is preset. The change rate threshold a0 is a negative value. If the throttle opening change rate is less than the change rate threshold a0, it means that the throttle opening is changing slowly and the throttle may be closed or is about to be closed.

[0069] The pre-throttle pressure signal b is greater than the pressure threshold b0, indicating that the pre-throttle pressure is relatively high. This may be due to a sudden increase in the pre-throttle pressure caused by the throttle closing.

[0070] The engine speed is located in a preset speed range (c0, c1), wherein c0 and c1 are two speed thresholds.

[0071] If the three conditions are all met, it is indicated that the current is in the load reduction condition, and at this time, the load reduction condition identifier A is set to 1.

[0072] In the load reduction condition, the supercharger surge condition is prone to occur, and at this time, the pressure difference Δb = b-d of the pressure value b before the throttle valve and the pressure value d after the throttle valve is calculated. If Δb is less than the pressure difference threshold Δb0, it is indicated that the supercharger is in the surge condition, the surge valve surge condition identifier B is set to 1, and at this time, the control of the turbulence component needs to be performed, and the control state Z of the surge valve is set to 1 from 0.

[0073] In the case where it is determined that the supercharger is in the surge condition, the pressure signal b before the throttle valve of the intake inlet of the surge valve is the boost pressure. Since the structure of the pipeline before the throttle valve is fixed, the pipeline volume is fixed, the bleed flow rate can be represented by the boost pressure change rate, the boost pressure change rate is large, which indicates that the bleed flow rate is large, the noise is large, and a large aperture and / or a large number of hole structures are needed for noise reduction processing. The boost pressure change rate is small, which indicates that the bleed flow rate is small, the noise is small, and a small aperture and / or a small number of hole structures are needed for noise reduction processing. Therefore, the boost pressure change rate can be used as a control target to perform the control operation of the turbulence component in the embodiment. The boost pressure change rate can be referred to as the pressure change rate before the throttle valve of the surge valve.

[0074] In an implementation manner, the pressure value before the throttle valve can be acquired, and the pressure change rate before the throttle valve of the surge valve is calculated according to the change information of the pressure value.

[0075] In an actual scenario, the pressure value before the throttle valve at different times can be acquired, such as b1 being the pressure value before the throttle valve at the current time and b2 being the pressure value before the throttle valve at the previous time. At this time, the change information of the pressure value is that b2 changes to b1 in time Δt.

[0076] At this time, the pressure change rate before the throttle valve of the surge valve = b1-b2 / △t.

[0077] In an actual scenario, which two times are selected to calculate the pressure change rate before the throttle valve of the surge valve, or the average value of the pressure change rates of multiple times, can be configured according to actual conditions.

[0078] S12, according to the pressure change rate, determining the moving stroke of the traction device.

[0079] In the embodiments of the present application, the moving stroke of the traction device can be divided into two cases: upward movement and downward movement. In one implementation, the value of the moving stroke of upward movement can be set as a positive value, and the value of the moving stroke of downward movement can be set as a negative value. In another implementation, the value of the moving stroke of downward movement can also be set as a positive value, and the value of the moving stroke of upward movement can be set as a negative value. The specific configuration can be performed according to the actual scene.

[0080] In the specific implementation, the required structure characteristics of the hole-shaped structure for noise reduction are different due to different pressure change rates, and the moving stroke of the traction device is different.

[0081] S13, controlling the traction device to drive the spoiler component to move in the specific direction according to the moving stroke.

[0082] In the embodiments of the present application, the motor or other driving components or actuators can be used to control the traction device to drive the spoiler component to move in the specific direction, and the moving stroke is the calculated moving stroke.

[0083] It should be noted that after the moving stroke is known, the running time and running direction of the motor or other driving components or actuators can be determined, so that the traction device drives the spoiler component to move in the specific direction according to the running time and running direction, so that the traction device drives the spoiler component to move in the specific direction by the moving stroke.

[0084] In the embodiments, the valve core of the surge valve is provided with a spoiler component, the spoiler component is provided with a hole-shaped structure, the structure characteristics of the hole-shaped structure in different regions along the specific direction of the spoiler component are different, and the traction device of the spoiler component can drive the spoiler component to move in the specific direction to make the air outlet of the surge valve located in different regions of the spoiler component, so that the hole-shaped structure with different structure characteristics can be used for noise reduction according to different air exhaust noises. On the basis of this structure, in the case where it is determined that the supercharger is in the surge working condition, the pressure change rate before the throttle valve of the surge valve is calculated, the moving stroke of the traction device is determined according to the pressure change rate, the traction device is controlled to drive the spoiler component to move in the specific direction according to the moving stroke, so that the hole-shaped structure located at the air outlet matches the current pressure change rate, and the surge valve air exhaust noise can be reduced to the greatest extent.

[0085] On the basis of any of the above embodiments, referring to Figure 6 , the moving stroke of the traction device can be determined according to the pressure change rate, which can include:

[0086] S21, calculating the intake pressure before the throttle valve according to the opening of the throttle valve, the pressure value before the throttle valve, the engine speed and the accelerator opening.

[0087] In a specific implementation, the opening degree a of the throttle valve, the pressure value b before the throttle valve, the engine speed c, and the accelerator opening degree e have a functional relationship with the intake pressure before the throttle valve, i.e., the intake pressure before the throttle valve = f (a, b, c, e), where f represents the functional relationship, which can be obtained based on multiple tests. Therefore, in the embodiment of the application, the intake pressure before the throttle valve can be calculated by using the above functional relationship.

[0088] In S22, the bleed amount of the surge valve is calculated based on the intake pressure before the throttle valve.

[0089] In the embodiment of the application, the intake pressure before the throttle valve has a corresponding functional relationship with the bleed amount of the surge valve, and the bleed amount of the surge valve can be calculated based on the functional relationship and the intake pressure before the throttle valve.

[0090] In an implementation, the engine speed and the intake pipe volume can be obtained, and the bleed amount of the surge valve is calculated based on the intake pressure before the throttle valve, the engine speed, and the intake pipe volume.

[0091] In a specific implementation, the intake pipe volume is represented by f.

[0092] In an implementation, the bleed amount of the surge valve can be calculated by using the speed density method. At this time, the calculation formula of the bleed amount of the surge valve is as follows:

[0093] Engine speed x intake pipe volume x pressure before throttle valve ÷ (intake temperature x Rg) x intake pipe efficiency.

[0094] Where Rg is a fixed coefficient, which can be configured according to actual conditions.

[0095] In S23, the moving stroke of the traction device is calculated according to the bleed amount of the surge valve and the pressure change rate.

[0096] Where the bleed amount of the surge valve and the pressure change rate can represent how much bleed flow is needed at present, and the bleed flow is related to the moving stroke of the traction device. Therefore, the moving stroke of the traction device can be calculated by using the bleed amount of the surge valve and the pressure change rate.

[0097] In an implementation, with reference to Figure 7 , step S23 can include:

[0098] In S31, a stroke control feedforward value corresponding to the bleed amount of the surge valve is determined, and a reference value corresponding to the pressure change rate of the surge valve is determined.

[0099] In the embodiments of the present application, the moving stroke of the traction device can be calculated in a combination of feedforward control and PID (Proportional-Integral-Derivative Control) control. The compound control strategy of "feedforward disturbance suppression + PID deviation elimination" not only improves the response speed of the system to the measurable disturbance, but also resists unknown disturbance through PID, thereby ensuring the control accuracy and robustness.

[0100] In a specific implementation, a mapping relationship between the surge valve discharge amount and the stroke control feedforward value is obtained in advance according to calibration by test, etc. The mapping relationship can be represented by a curve function 1. In an implementation of the embodiments of the present application, the mapping relationship between the surge valve discharge amount and the stroke control feedforward value can be queried to obtain the stroke control feedforward value corresponding to the discharge amount of the surge valve.

[0101] The stroke control feedforward value corresponding to the discharge amount of the surge valve is a stroke base value, and the stroke control feedforward value can be based on a certain position. For example, the entire traction device 32 is divided into five scales from top to bottom, and each two scales form an area. The structural features of the hole-shaped structures in different areas are different. For example, in the order from top to bottom, the hole diameters of the hole-shaped structures gradually increase. The stroke control feedforward value in the embodiments of the present application can be based on scale 0.

[0102] In addition, a corresponding relationship between the surge valve discharge amount and the pressure change rate reference value can also be obtained in advance by calibration. The mapping relationship can be represented by a curve function 2. The pressure change rate reference value corresponding to the surge valve discharge amount in the corresponding relationship represents the theoretical pressure change rate corresponding to the surge valve discharge amount. The corresponding relationship between the surge valve discharge amount and the pressure change rate reference value is queried to obtain the reference value of the pressure change rate corresponding to the discharge amount of the surge valve.

[0103] S32, calculating a stroke correction value according to the pressure change rate and the reference value of the pressure change rate.

[0104] Specifically, the reference value of the pressure change rate is a theoretical pressure change rate, and the pressure change rate is an actually measured pressure change rate. The pressure change rate and the reference value of the pressure change rate are taken as inputs of PID control, and the stroke correction value can be calculated by PID control. For example, the calculated stroke control feedforward value is 4, and the calculated stroke correction value is -1, in which the downward movement is positive, and the upward movement is negative.

[0105] S33, calculating the moving stroke of the traction device according to the stroke control feedforward value and the stroke correction value.

[0106] In the embodiment of the present application, the stroke control feedforward value and the stroke correction value are added to obtain the moving stroke of the traction device.

[0107] According to the above example, the moving stroke of the traction device = 4 + (-1) = 3, that is, it needs to move to scale 3 to realize closed-loop control of the spoiler component. When moving to scale 3, the hole structure in the corresponding area is used for noise reduction processing to reduce the exhaust noise of the surge valve.

[0108] In actual scenarios, the greater the exhaust flow of the surge valve, the greater the exhaust noise. By controlling the stroke control of the spoiler structure to control the density of the air hole, the exhaust flow is limited to reduce the exhaust noise.

[0109] In the embodiment of the present application, the stroke control feedforward value is obtained based on the exhaust amount of the surge valve, the stroke correction value is obtained by using the pressure change rate for stroke correction, and finally the moving stroke of the traction device is calculated to meet the exhaust amount requirement and the exhaust noise requirement. The flow field distribution of the exhaust outlet is dynamically adjusted by adjusting the electric control mode of the moving stroke to adapt to different flow requirements under different working conditions (high load or low load).

[0110] On the basis of the above-mentioned embodiment of the spoiler component control method, another embodiment of the present application provides a spoiler component control device. A valve core of a surge valve is provided with a spoiler component. The spoiler component is provided with a hole structure, and the structural features of the hole structure in different areas along a specific direction of the spoiler component are different. A traction device of the spoiler component can drive the spoiler component to move along the specific direction, so that the exhaust outlet of the surge valve is located in different areas of the spoiler component.

[0111] Referring to Figure 8 , the spoiler component control device comprises:

[0112] The calculation module 11 is configured to calculate the pressure change rate before the throttle valve of the surge valve when it is determined that the supercharger is in the surge working condition.

[0113] The determination module 12 is configured to determine the moving stroke of the traction device according to the pressure change rate.

[0114] The movement control module 13 is configured to control the traction device to drive the spoiler component to move along the specific direction according to the moving stroke.

[0115] In an implementation manner, the calculation module 11 comprises:

[0116] The change rate calculation sub-module is configured to obtain the pressure value before the throttle valve, and calculate the pressure change rate before the throttle valve of the surge valve according to the change information of the pressure value.

[0117] In an implementation manner, the determining module 12 comprises:

[0118] a pressure calculating sub-module, configured to calculate the intake pressure before the throttle valve according to the opening degree of the throttle valve, the pressure value before the throttle valve, the engine speed and the accelerator opening degree;

[0119] a leakage amount calculating sub-module, configured to calculate the leakage amount of the surge valve based on the intake pressure before the throttle valve;

[0120] a stroke calculating sub-module, configured to calculate the moving stroke of the traction device according to the leakage amount of the surge valve and the pressure change rate.

[0121] In an implementation manner, the leakage amount calculating sub-module is specifically configured to:

[0122] obtain the engine speed and the intake pipe volume, and calculate the leakage amount of the surge valve based on the intake pressure before the throttle valve, the engine speed and the intake pipe volume.

[0123] In an implementation manner, the stroke calculating sub-module comprises:

[0124] a value determining unit, configured to determine a stroke control feedforward value corresponding to the leakage amount of the surge valve, and determine a reference value of the pressure change rate corresponding to the leakage amount of the surge valve;

[0125] a correction unit, configured to calculate a stroke correction value according to the pressure change rate and the reference value of the pressure change rate;

[0126] a stroke calculating unit, configured to calculate the moving stroke of the traction device according to the stroke control feedforward value and the stroke correction value.

[0127] In an implementation manner, the value determining unit is specifically configured to:

[0128] query a mapping relationship between the leakage amount of the surge valve and the stroke control feedforward value to obtain the stroke control feedforward value corresponding to the leakage amount of the surge valve, and query a corresponding relationship between the leakage amount of the surge valve and the reference value of the pressure change rate to obtain the reference value of the pressure change rate corresponding to the leakage amount of the surge valve.

[0129] In an implementation manner, the calculating module 11 comprises:

[0130] a surge recognition sub-module, configured to determine that the supercharger is in a surge working condition when the opening degree change rate of the throttle valve is less than a change rate threshold value, the pressure value before the throttle valve is greater than a pressure threshold value, the engine speed is within a preset speed range, and the pressure difference between the pressure value before the throttle valve and the pressure value after the throttle valve is less than a pressure difference threshold value.

[0131] In the embodiment, the valve core of the surge valve is provided with a spoiler component around the valve core, the spoiler component is provided with a hole structure, the structural features of the hole structure in different regions along a specific direction of the spoiler component are different, and a traction device of the spoiler component can drive the spoiler component to move along the specific direction so that the air outlet of the surge valve is located at different regions of the spoiler component, thereby being capable of performing noise reduction processing by using the hole structure with different structural features according to different air exhaust noises. On the basis of the structure, in the case of determining that the supercharger is in a surge working condition, the pressure change rate before the throttle of the surge valve is calculated, the moving stroke of the traction device is determined according to the pressure change rate, the traction device is controlled to drive the spoiler component to move along the specific direction according to the moving stroke, so that the hole structure at the air outlet is matched with the current pressure change rate, and the surge valve air exhaust noise can be reduced to the maximum extent.

[0132] It should be noted that the working processes of the various modules, sub-modules and units in the embodiments are described above, and will not be described here.

[0133] In the embodiments of the present application, an electronic device is also provided, which includes at least one processor and a memory connected with the processor, wherein:

[0134] The memory is used for storing a computer program;

[0135] The processor is used for executing the computer program, so that the electronic device can implement the spoiler component control method described above.

[0136] Reference Figure 9 As shown in the figure, it shows a structure schematic diagram suitable for implementing the electronic device in the embodiments of the present application. The electronic device in the embodiments of the present application can include but is not limited to fixed terminals such as mobile phones, notebook computers, PDAs (personal digital assistants), PADs (tablets), desktop computers, controllers and the like. Figure 9 The electronic device shown is only an example, and should not bring any limitation to the functions and use range of the embodiments of the present application.

[0137] As Figure 9As shown, the electronic device can include a processing device (e.g., a central processing unit, a graphics processing unit, etc.) 601 that can perform various appropriate actions and processes according to programs stored in a read-only memory (ROM) 602 or loaded from a storage device 608 into a random access memory (RAM) 603. In a state in which the electronic device is powered on, various programs and data required for operation of the electronic device are also stored in the RAM 603. The processing device 601, the ROM 602, and the RAM 603 are connected to each other through a bus 604. An input / output (I / O) interface 605 is also connected to the bus 604.

[0138] Generally, the following devices can be connected to the I / O interface 605: input devices 606 including, for example, a touch screen, a touch pad, a keyboard, a mouse, a camera, a microphone, an accelerometer, a gyroscope, etc.; output devices 607 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; storage devices 608 including, for example, a memory card, a hard disk, etc.; and communication devices 609. The communication devices 609 can allow the electronic device to communicate wirelessly or wiredly with other devices to exchange data. Although Figure 9 An electronic device having various devices is shown, but it is understood that all of the shown devices are not required to be implemented or possessed. More or fewer devices can be alternatively implemented or possessed.

[0139] The embodiment of the present application also provides a computer program product comprising computer readable instructions, which, when executed on an electronic device, cause the electronic device to implement any of the control methods of the turbulence component provided by the embodiments of the present application.

[0140] The embodiment of the present application also provides a computer readable storage medium carrying one or more computer programs, which, when executed by an electronic device, can cause the electronic device to implement any of the control methods of the turbulence component provided by the embodiments of the present application.

[0141] In addition, it should be noted that the device embodiments described above are merely illustrative, wherein the units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, i.e., they can be located in one place, or distributed on multiple network units. Part or all of the modules can be selected according to actual needs to achieve the purpose of the embodiments. In addition, the connection relationship between the modules in the device embodiment provided by the present application indicates that there is a communication connection between them, which can be implemented as one or more communication buses or signal lines.

[0142] Those skilled in the art can clearly understand that the application can be implemented by means of software plus necessary universal hardware, and of course can also be implemented by means of dedicated hardware including special integrated circuit, special CPU, special memory, special component, etc. Generally, any function completed by computer program can be easily implemented by corresponding hardware, and the specific hardware structure for implementing the same function can also be various, such as analog circuit, digital circuit or special circuit, etc. However, for the application, software program implementation is a better embodiment. Based on such understanding, the technical solution of the application or the part of the application which makes contribution to the prior art can be embodied in the form of software product, which is stored in readable storage medium, such as computer floppy disk, U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk, etc., and includes a plurality of instructions for making a computer device (which can be personal computer, training device or network device, etc.) execute the method described in various embodiments of the application.

[0143] In the above embodiments, the implementation can be achieved by software, hardware, firmware or any combination thereof, entirely or partially. When implemented by software, the implementation can be achieved in the form of a computer program product, entirely or partially.

[0144] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the flow or function described in the embodiments of the application is generated entirely or partially. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another, for example, the computer instructions can be transmitted from one website, computer, training device or data center to another website, computer, training device or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode. The computer-readable storage medium can be any available medium that can be stored by a computer or a data storage device such as a training device, a data center, etc. integrated with one or more available media sets. The available medium can be a magnetic medium (such as a floppy disk, a hard disk, a magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (SSD)), etc.

Claims

1. A spoiler member control method characterized by, The valve core of the surge valve is provided with a spoiler part around the valve core; the spoiler part is provided with a hole structure, the structural features of the hole structure in different areas along a specific direction of the spoiler part are different; the traction device of the spoiler part can drive the spoiler part to move along the specific direction, so that the air outlet of the surge valve is located at different areas of the spoiler part; wherein the structural features can include at least one of size and number, and the flow field rectification and air leakage flow control are realized by the density of the hole structure of the spoiler part located at the air outlet; The spoiler part control method comprises: In the case of determining that the supercharger is in the surge working condition, the pressure change rate before the throttle valve of the surge valve is calculated; According to the opening of the throttle valve, the pressure value before the throttle valve, the engine speed and the accelerator opening, the intake pressure before the throttle valve is calculated; Based on the intake pressure before the throttle valve, the air leakage amount of the surge valve is calculated; wherein the calculation formula of the air leakage amount of the surge valve is: engine speed×intake pipe volume×pressure before throttle valve÷(intake temperature×Rg)×intake pipe efficiency; wherein Rg is a fixed coefficient; According to the air leakage amount of the surge valve and the pressure change rate, the moving stroke of the traction device is calculated; wherein, including: taking the pressure change rate and the reference value of the pressure change rate as the input of PID control to obtain the stroke correction value, determining the stroke control feedforward value corresponding to the air leakage amount of the surge valve, and adding the stroke control feedforward value and the stroke correction value as the moving stroke of the traction device; According to the moving stroke, the traction device drives the spoiler part to move along the specific direction.

2. The spoiler control method according to claim 1, characterized by, The pressure change rate before the throttle valve of the surge valve is calculated, including: Obtaining the pressure value before the throttle valve; According to the change information of the pressure value, the pressure change rate before the throttle valve of the surge valve is calculated.

3. The spoiler control method according to claim 1, characterized by, Based on the intake pressure before the throttle valve, the air leakage amount of the surge valve is calculated, including: Obtaining the engine speed and the intake pipe volume; Based on the intake pressure before the throttle valve, the engine speed and the intake pipe volume, the air leakage amount of the surge valve is calculated.

4. The spoiler control method according to claim 1, characterized by, According to the air leakage amount of the surge valve and the pressure change rate, the moving stroke of the traction device is calculated, including: Determine the stroke control feedforward value corresponding to the air leakage amount of the surge valve, and determine the reference value of the pressure change rate corresponding to the air leakage amount of the surge valve; According to the pressure change rate and the reference value of the pressure change rate, the stroke correction value is calculated; According to the stroke control feedforward value and the stroke correction value, the moving stroke of the traction device is calculated.

5. The spoiler control method according to claim 4, characterized by, Determine the stroke control feedforward value corresponding to the air leakage amount of the surge valve, and determine the reference value of the pressure change rate corresponding to the air leakage amount of the surge valve, including: Query the mapping relationship between the air leakage amount of the surge valve and the stroke control feedforward value to obtain the stroke control feedforward value corresponding to the air leakage amount of the surge valve; Query the corresponding relationship between the air leakage amount of the surge valve and the reference value of the pressure change rate to obtain the reference value of the pressure change rate corresponding to the air leakage amount of the surge valve.

6. The spoiler control method according to claim 1, characterized by, Determine that the supercharger is in the surge working condition, including: In a case that the opening rate of the throttle is less than the rate threshold, the pressure value before the throttle is greater than the pressure threshold, the engine speed is in the preset speed range, and the pressure difference between the pressure value before the throttle and the pressure value after the throttle is less than the pressure difference threshold, it is determined that the supercharger is in a surge condition.

7. A spoiler control device characterized by comprising: The valve core of the surge valve is provided with a spoiler component around the valve core; the spoiler component is provided with a hole structure, and the structural features of the hole structure in different regions in a specific direction of the spoiler component are different; the traction device of the spoiler component can drive the spoiler component to move in the specific direction, so that the air outlet of the surge valve is located in different regions of the spoiler component; wherein the structural features can include at least one of size and number, and the flow field rectification and air leakage flow control are realized by the density of the hole structure of the spoiler component located in the air outlet; The spoiler component control device comprises: A calculation module is configured to calculate a pressure change rate before the throttle of the surge valve in a case that the supercharger is determined to be in a surge condition; A determination module is configured to determine a moving stroke of the traction device according to the pressure change rate; wherein, the determination module is configured to calculate an intake pressure before the throttle of the surge valve according to the opening of the throttle, the pressure value before the throttle, the engine speed and the accelerator opening; calculate the air leakage amount of the surge valve based on the intake pressure before the throttle; wherein, the calculation formula of the air leakage amount of the surge valve is: engine speed × intake pipe volume × pressure before throttle ÷ (intake temperature × Rg) × intake pipe efficiency; wherein, Rg is a fixed coefficient; calculate the moving stroke of the traction device according to the air leakage amount of the surge valve and the pressure change rate; wherein, the determination module is configured to take the pressure change rate and a reference value of the pressure change rate as the input of PID control to obtain a stroke correction value, determine the stroke control feedforward value corresponding to the air leakage amount of the surge valve, and add the stroke control feedforward value and the stroke correction value as the moving stroke of the traction device; A moving control module is configured to control the traction device to drive the spoiler component to move in the specific direction according to the moving stroke.

8. An electronic device, comprising: The electronic device comprises at least one processor and a memory connected to the processor, wherein: The memory is configured to store a computer program; The processor is configured to execute the computer program, so that the electronic device can implement the spoiler component control method according to any one of claims 1 to 6.

9. A computer storage medium, characterized in that The storage medium carries one or more computer programs, which can enable the electronic device to implement the spoiler component control method according to any one of claims 1 to 6 when the one or more computer programs are executed by the electronic device.

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