Method and device for controlling a turbocharger bleed valve, electronic device and storage medium

Abstract

The application discloses a kind of supercharger bleed valve control method, device, electronic equipment and storage medium.The present application relates to vehicle control technical field, method includes: the initial pressure of supercharger bleed valve is determined based on the performance parameter of supercharger and the operating parameter of vehicle, initial pressure is the minimum control pressure required for completely closing supercharger bleed valve;Determine the target pressure of supercharger bleed valve based on pressure regulating value and initial pressure;Determine the control parameter of supercharger bleed valve based on initial pressure, target pressure and the current control pressure of supercharger bleed valve;Control supercharger bleed valve is based on control parameter operation.The technical scheme of the present application, the target pressure is determined by pressure regulating value and the minimum control pressure required for completely closing supercharger bleed valve, the control parameter of supercharger bleed valve is determined based on initial pressure, target pressure and current control pressure, can reduce the wear and tear of bleed valve piece and bleed valve seat, prolong the service life of supercharger bleed valve.

Description

Technical Field

[0001] This invention relates to the field of vehicle control technology, and in particular to a control method, device, electronic equipment, and storage medium for a turbocharger bleed valve. Background Technology

[0002] In the field of vehicle engine control, the engine's air volume requirement varies under different operating conditions. In order to meet the engine's air volume requirement under different operating conditions, reduce the engine's pumping loss and fuel consumption rate, and increase thermal efficiency, it is necessary to adjust the boost pressure through the exhaust gas bypass control valve (i.e., the turbocharger exhaust valve).

[0003] Currently, turbocharger vent valves include two types: mechanical and electronically controlled. In a mechanical turbocharger vent valve, the pressure after boosting is connected to the diaphragm box via a rubber hose. The boost pressure gradually increases with the engine speed, pushing the diaphragm downwards. Overcoming the spring preload, the diaphragm opens, bypassing some exhaust gas and thus controlling the boost pressure. In an electronically controlled turbocharger vent valve, the outlet pressure of the exhaust bypass solenoid valve is adjusted to regulate the control pressure required for each operating condition. This pressure is then connected to the diaphragm box of the turbocharger vent valve via a rubber hose, allowing for flexible control of the vent valve opening and thus controlling the boost pressure.

[0004] However, when the vehicle accelerates and decelerates frequently, the bleed valve needs to be opened and closed repeatedly. The mechanical bleed valve of the turbocharger is not very sensitive and cannot open when the pressure is insufficient, which affects the engine operation. The valve plate of the electronically controlled turbocharger bleed valve will generate a large mechanical impact when it sits down. Frequent sitting will cause excessive wear on the bleed valve plate and bleed valve seat, affecting the service life of the turbocharger bleed valve. Summary of the Invention

[0005] This invention provides a control method, device, electronic equipment, and storage medium for a turbocharger vent valve, aiming to reduce wear on the vent valve plate and vent valve seat and extend the service life of the turbocharger vent valve.

[0006] According to one aspect of the present invention, a method for controlling a booster vent valve is provided, the method comprising:

[0007] The initial pressure of the turbocharger bleed valve is determined based on the turbocharger's performance parameters and the vehicle's operating parameters. The initial pressure is the minimum control pressure required to fully close the turbocharger bleed valve.

[0008] Determine the target pressure of the booster vent valve based on the pressure regulation value and the initial pressure;

[0009] The control parameters of the booster vent valve are determined based on the initial pressure, target pressure, and current control pressure of the booster vent valve.

[0010] The booster vent valve operates based on control parameters.

[0011] Optional performance parameters include the diaphragm box spring preload of the turbocharger, the bypass valve rocker arm lever ratio, the bypass valve area, and the diaphragm area; operating parameters include the inlet and outlet pressures of the turbocharger vent valve.

[0012] Optionally, the initial pressure of the turbocharger bleed valve is determined based on the performance parameters of the turbocharger and the operating parameters of the vehicle, including: determining the reference pressure of the turbocharger bleed valve; and determining the initial pressure based on the reference pressure, atmospheric pressure, diaphragm box spring preload, bypass valve rocker arm lever ratio, bypass valve area, diaphragm area, pre-vortex pressure, and post-vortex pressure.

[0013] Optionally, the reference pressure is the pressure between the vent valve plate and the vent valve seat of the turbocharger when the vent valve of the turbocharger is fully closed; the initial pressure is the control pressure of the vent valve of the turbocharger when the reference pressure is 0.

[0014] Optional, initial pressure P c0 = [F0-i*(P3-P4)*A2] / A1+P0, where F0 represents the diaphragm box spring preload, i represents the bypass valve rocker arm lever ratio, A2 represents the bypass valve area, A1 represents the diaphragm area, P3 represents the pressure before the vortex, P4 represents the pressure after the vortex, and P0 represents the atmospheric pressure.

[0015] Optional, target pressure P cmin =P c0 -P err , where P c0 P represents the initial pressure. err This indicates the pressure regulation value.

[0016] Optionally, the control parameters of the booster vent valve are determined based on the initial pressure, the target pressure, and the current control pressure of the booster vent valve, including: determining whether the current control pressure is less than or equal to the initial pressure; and when the current control pressure is less than or equal to the initial pressure, determining the control parameters based on the current control pressure, the initial pressure, and the target pressure.

[0017] Optionally, the method further includes: adjusting the current control pressure based on the target pressure when the current control pressure is less than the target pressure; and filtering the current control pressure to reduce the rate of change of the current control pressure and make it slowly change towards the target pressure when the current control pressure is less than or equal to the initial pressure and greater than the target pressure.

[0018] According to another aspect of the present invention, a control device for a turbocharger vent valve is provided. This control device is used to implement the control method for the turbocharger vent valve described in any embodiment of the present invention. The control device for the turbocharger vent valve includes:

[0019] The first determining module is used to determine the initial pressure of the turbocharger bleed valve based on the performance parameters of the turbocharger and the operating parameters of the vehicle, wherein the initial pressure is the minimum control pressure required to fully close the turbocharger bleed valve.

[0020] The second determining module is used to determine the target pressure of the booster vent valve based on the pressure regulation value and the initial pressure.

[0021] The third determining module is used to determine the control parameters of the booster vent valve based on the initial pressure, the target pressure, and the current control pressure of the booster vent valve.

[0022] The equipment control module is used to control the operation of the booster vent valve based on control parameters.

[0023] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0024] At least one processor; and a memory communicatively connected to the at least one processor;

[0025] The memory stores a computer program that can be executed by at least one processor, which enables the at least one processor to perform the control method for the booster vent valve according to any embodiment of the present invention.

[0026] According to another aspect of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium storing computer instructions for causing a processor to execute and implement the control method for the booster vent valve as described in any embodiment of the present invention.

[0027] The technical solution of this invention determines the initial pressure of the turbocharger bleed valve based on the performance parameters of the turbocharger and the operating parameters of the vehicle. The initial pressure is the minimum control pressure required to fully close the turbocharger bleed valve. The target pressure of the turbocharger bleed valve is determined based on the pressure regulation value and the initial pressure. The control parameters of the turbocharger bleed valve are determined based on the initial pressure, the target pressure, and the current control pressure of the turbocharger bleed valve. The turbocharger bleed valve is then controlled to operate based on these control parameters. Determining the target pressure based on the pressure regulation value and the minimum control pressure required to fully close the turbocharger bleed valve, and determining the control parameters of the turbocharger bleed valve based on the initial pressure, the target pressure, and the current control pressure, can reduce wear on the bleed valve plate and the bleed valve seat, extending the service life of the turbocharger bleed valve. This solves the problems of low sensitivity in mechanical turbocharger bleed valves, which cannot open the bleed valve when the pressure is insufficient, affecting engine operation; and the large mechanical impact generated when the valve plate of an electronically controlled turbocharger bleed valve sits down, causing excessive wear on the bleed valve plate and seat due to frequent sitting, thus affecting the service life of the turbocharger bleed valve.

[0028] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a flowchart illustrating a control method for a booster vent valve provided in Embodiment 1 of the present invention;

[0031] Figure 2 This is a schematic diagram of the structure of a booster vent valve provided in Embodiment 1 of the present invention;

[0032] Figure 3 This is a requested torque curve provided in Embodiment 1 of the present invention;

[0033] Figure 4 This is a boost pressure curve provided in Embodiment 1 of the present invention;

[0034] Figure 5 This is an atmospheric pressure curve provided in Embodiment 1 of the present invention;

[0035] Figure 6 This is a control pressure curve provided in Embodiment 1 of the present invention;

[0036] Figure 7 This is a push rod displacement curve provided in Embodiment 1 of the present invention;

[0037] Figure 8 This is another control pressure curve provided in Embodiment 1 of the present invention;

[0038] Figure 9 This is another push rod displacement curve provided in Embodiment 1 of the present invention;

[0039] Figure 10 This is a schematic diagram of the control device for a booster vent valve provided in Embodiment 2 of the present invention;

[0040] Figure 11 This is a schematic diagram of the structure of an electronic device provided in Embodiment 3 of the present invention.

[0041] Figure label:

[0042] 101-Spring diaphragm box air inlet, 102-Diaphragm spring box, 103-Diaphragm, 104-Return spring, 105-Metal push rod, 106-Vent valve plate, 107-Vent valve seat, 108-Bypass valve rocker arm. Detailed Implementation

[0043] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0044] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0045] Example 1

[0046] Figure 1 This is a flowchart illustrating a control method for a turbocharger vent valve according to Embodiment 1 of the present invention. This embodiment is applicable to situations such as the control of a turbocharger vent valve. The method can be executed by the control device for the turbocharger vent valve provided by the present invention. This device can be implemented in hardware and / or software. In a specific embodiment, the device can be integrated into an electronic device. The following embodiments will illustrate this using the integration of the device into an electronic device as an example. (Refer to...) Figure 1 The method specifically includes the following steps:

[0047] S101. Determine the initial pressure of the turbocharger bleed valve based on the turbocharger's performance parameters and the vehicle's operating parameters.

[0048] Among them, the performance parameters of the turbocharger can be understood as the attribute information of the turbocharger. The performance parameters of the turbocharger are related to the model of the turbocharger. Different models of turbochargers have different performance parameters. The performance parameters of the turbocharger can be determined based on the model of the turbocharger. The operating parameters of the vehicle can be understood as the operating condition information of the engine when the vehicle is running. The initial pressure can be understood as the minimum control pressure required for the bleed valve plate and bleed valve seat of the turbocharger to be fully closed. That is, the control pressure of the turbocharger bleed valve when the bleed valve plate and bleed valve seat of the turbocharger are fully closed and there is no friction on the contact surface of the bleed valve plate and bleed valve seat.

[0049] Specifically, the performance parameters of the turbocharger include the diaphragm box spring preload, the bypass valve rocker arm lever ratio, the bypass valve area, and the diaphragm area; the operating parameters include the inlet and outlet pressures of the turbocharger's vent valve.

[0050] Figure 2 This is a schematic diagram of the structure of a booster vent valve provided in Embodiment 1 of the present invention, where P is... c The control pressure generated by the waste gas bypass valve is represented by F0, the diaphragm box spring preload force is represented by P0, atmospheric pressure is represented by P3, the pressure before the vortex is represented by P4, and the arrow indicates the direction of pressure flow. From Figure 2 As can be seen from the diagram, the turbocharger vent valve includes a spring diaphragm box inlet 101, a diaphragm spring box 102, a diaphragm 103, a return spring 104, a metal push rod 105, a vent valve plate 106, a vent valve seat 107, and a bypass valve rocker arm 108.

[0051] The diaphragm spring box is a metal airtight device used to receive control pressure from the waste gas bypass solenoid valve to push the diaphragm downward and compress the return spring. The return spring has a compression preload F0, with one end connected to the diaphragm and the other end in contact with the atmosphere. The metal push rod connects the diaphragm and the bypass valve rocker arm, which in turn connects the vent valve plate and the metal push rod. This arrangement forms a lever structure to control the movement of the vent valve plate, with the lever ratio of the lever structure being the same as that of the bypass valve rocker arm. One side of the vent valve seat of the booster is for pre-vortex exhaust, and the other side is for post-vortex gas. When the vent valve plate is closed, it can fit tightly with the vent valve seat to form a sealing surface.

[0052] In this application, atmospheric pressure can be directly measured by an atmospheric pressure sensor installed inside the vehicle; turbine inlet pressure can be measured by an exhaust gas recirculation (EGR) pressure sensor, and the higher the load, the greater the turbine inlet pressure; turbine outlet pressure can be calculated by the back pressure model of the electronic control unit. Generally, turbine outlet pressure is related to the processing logic of the turbocharger's exhaust valve, and turbine outlet pressure is approximately 5-15 kPa higher than atmospheric pressure.

[0053] It should be noted that the exhaust gas bypass solenoid valve and the exhaust gas bypass valve of the present invention can be understood as alternative names for the booster vent valve, and the three essentially refer to the same device.

[0054] Optionally, the initial pressure of the turbocharger bleed valve is determined based on the performance parameters of the turbocharger and the operating parameters of the vehicle, including: determining the reference pressure of the turbocharger bleed valve; and determining the initial pressure based on the reference pressure, atmospheric pressure, diaphragm box spring preload, bypass valve rocker arm lever ratio, bypass valve area, diaphragm area, pre-vortex pressure, and post-vortex pressure.

[0055] The reference pressure can be understood as the pressure between the vent valve plate and the vent valve seat of the turbocharger when the vent valve of the turbocharger is fully closed; the initial pressure is the control pressure of the vent valve of the turbocharger when the reference pressure is 0.

[0056] When the waste gas bypass valve is fully closed, the pressure between the vent valve plate and the vent valve seat is F = F0 - (P c -P0)*A1-i*(P3-P4)*A2, where F0 represents the diaphragm box spring preload, i represents the bypass valve rocker arm lever ratio, A2 represents the bypass valve area, A1 represents the diaphragm area, P3 represents the pressure before the vortex, P4 represents the pressure after the vortex, P0 represents atmospheric pressure, P c This indicates the control pressure generated by the waste gas bypass valve.

[0057] When F is 0, that is, when the vent valve plate of the waste gas bypass valve just contacts the vent valve seat and there is no pressure between them, the control pressure generated by the waste gas bypass valve is the initial pressure P. c0 Specifically, the initial pressure P c0 = [F0-i*(P3-P4)*A2] / A1+P0.

[0058] Furthermore, during actual engine operation, the wear between the exhaust valve plate and the exhaust valve seat can be reduced by controlling the outlet pressure of the exhaust bypass control valve. For example, by ensuring that the minimum pressure of the exhaust bypass control valve is not lower than the initial pressure, the valve plate can be seated and sealed without generating contact pressure.

[0059] The advantage of this setting is that the initial pressure of the turbocharger's bleed valve can be accurately determined based on the turbocharger's performance and the vehicle's operating information.

[0060] S102. Determine the target pressure of the booster vent valve based on the pressure regulation value and the initial pressure.

[0061] The pressure regulation value can be understood as the pressure tolerance value based on the performance of the turbocharger and the control logic command. The target pressure can be understood as the minimum control pressure when the vent valve plate and vent valve seat of the turbocharger vent valve are completely closed and there is no contact pressure between the vent valve plate and the vent valve seat.

[0062] Specifically, the target pressure P cmin =P c0 -P err , where P c0 P represents the initial pressure. err Indicates pressure regulation value

[0063] The advantage of this setup is that it can avoid inconsistencies and manufacturing errors in the turbocharger, increase redundancy, and determine the pressure of the contact surface between the vent valve plate and the vent valve seat based on the pressure range of the turbocharger vent valve, effectively reducing the wear of the turbocharger vent valve.

[0064] S103. Determine the control parameters of the booster vent valve based on the initial pressure, target pressure, and current control pressure of the booster vent valve.

[0065] The control parameters of the turbocharger vent valve can be understood as the adjustment method of the operating parameters of the turbocharger vent valve, such as the adjustment method of the current control pressure. This embodiment does not limit this.

[0066] The control parameters of the booster vent valve are determined based on the initial pressure, target pressure, and current control pressure of the booster vent valve, including: determining whether the current control pressure is less than or equal to the initial pressure; and when the current control pressure is less than or equal to the initial pressure, determining the control parameters based on the current control pressure, initial pressure, and target pressure.

[0067] Specifically, when the current control pressure is less than or equal to the initial pressure, the vent valve seat and the vent valve plate will come into contact. There may be impact and wear between the vent valve seat and the vent valve plate. The current control pressure needs to be adjusted based on the initial pressure and the target pressure in order to slow down the seating speed of the vent valve plate, reduce the impact between the vent valve plate and the vent valve seat, and reduce the wear of the booster vent valve.

[0068] The current control pressure can be adjusted as follows: when the current control pressure is less than or equal to the initial pressure but greater than the target pressure, the current control pressure is filtered to reduce the rate of change of the current control pressure and make it slowly change towards the target pressure; when the current control pressure is equal to the target pressure, the filtering action is stopped; when the current control pressure is less than the target pressure, the current control pressure is set to the target pressure.

[0069] Furthermore, if the current control pressure is greater than the initial pressure, the vent valve seat and the vent valve plate will not come into contact, the vent valve seat and the vent valve plate will not impact each other, and the booster vent valve will not experience wear.

[0070] The advantage of this setting is that the control parameters of the booster vent valve can be adjusted according to the initial pressure, target pressure, and current control pressure, thereby improving the performance of the booster vent valve.

[0071] S104, Control the booster vent valve to operate based on control parameters.

[0072] Specifically, controlling the turbocharger vent valve operates based on control parameters, which can be understood as adjusting the current control pressure of the turbocharger vent valve. For example, when the current control pressure is less than or equal to the initial pressure but greater than the target pressure, the current control pressure is filtered to reduce the rate of change of the current control pressure and make it slowly change towards the target pressure. When the current control pressure equals the target pressure, the filtering action stops. When the current control pressure is less than the target pressure, the current control pressure is adjusted based on the target pressure, that is, the current control pressure is made equal to the target pressure.

[0073] The advantage of this design is that it slows down the settling speed of the bleed valve plate, reduces the impact between the bleed valve plate and the bleed valve seat, reduces the wear of the turbocharger bleed valve, and extends the service life of the turbocharger bleed valve.

[0074] Combination Figure 2 The process of adjusting the boost pressure is described. The Electronic Control Unit (ECU) calculates the required boost pressure based on the required torque, and then calculates the required exhaust bypass valve outlet pressure P based on the required boost pressure. c (Control pressure at the diaphragm box inlet). When the vehicle needs to accelerate, the ECU controls the exhaust gas bypass valve outlet pressure P. c When the pressure decreases, the spring (return spring) returns to its original position, the diaphragm pulls the metal push rod upward, the bleed valve (bleed valve plate and bleed valve seat) closes, and the boost pressure increases. When the vehicle needs to decelerate, the ECU controls the exhaust bypass valve outlet pressure P. c As the pressure increases, the spring is compressed, the diaphragm pushes the lever (metal push rod) downward, the vent valve opens, releasing excess exhaust gas from the turbine and reducing the boost pressure.

[0075] To ensure the exhaust bypass valve closes completely under any atmospheric pressure and operating conditions, the preload of the return spring is typically increased in design, meaning the preload is excessive. In existing control schemes, during the initial acceleration phase, P... c The control pressure will quickly return to zero to improve the acceleration response, and the vent valve plate will strike and press against the vent valve seat at high speed.

[0076] This invention compares the technical effects of existing technologies and the control method of this application. Figure 3 This is a requested torque curve provided in Embodiment 1 of the present invention, where T in the figure... rq1 and T rq2 This indicates two different torques; Figure 4 This is a boost pressure curve provided in Embodiment 1 of the present invention, where P in the figure...vd1 P vd2 and P vd3 This indicates three different boost pressures; Figure 5 This is an atmospheric pressure curve provided in Embodiment 1 of the present invention, where P is... env1 and P env2 This indicates two different atmospheric pressures; Figure 6 This is a control pressure curve provided in Embodiment 1 of the present invention, where P in the figure... cmax P c1 P c2 and P c3 This indicates four different control pressures; Figure 7 This is a push rod displacement curve provided in Embodiment 1 of the present invention. In the figure, x0, x1, x2, and x3 represent four different push rod displacements. max This indicates the push rod displacement corresponding to the maximum control pressure. Figure 8 This is another control pressure curve provided in Embodiment 1 of the present invention, where P in the figure... cmax P c P c0 and P cmin This indicates four different control pressures; Figure 9 This is another push rod displacement curve provided in Embodiment 1 of the present invention. In the figure, x0, x1, x2, and x3 represent four different push rod displacements. max This indicates the push rod displacement corresponding to the maximum control pressure.

[0077] in, Figure 6 It is the control pressure curve of existing technology. Figure 7 It is the existing push rod displacement curve. Figure 8 This is the control pressure curve of the control method of this application. Figure 9 This is the push rod displacement curve of the control method of this application. Figures 3-5 This is equivalent to the verification conditions of the prior art and the control method of this application.

[0078] from Figures 3-7 It can be seen from this that the time interval t0-t2 is P env1 High torque T under atmospheric pressure rq1 The request is for time t4-t6 to be P. env1 Small torque T under atmospheric pressure rq2 Request. Both, in the initial acceleration phase, control pressure P. c Both pressures instantly drop to zero, producing a noticeable impact effect. During the boost pressure stabilization phase, the control pressure requiring higher torque is lower. During the deceleration phase, both control pressures are controlled to their maximum P. cmax Extend the push rod (metal push rod) fully to open the vent valve and release air. Therefore, during acceleration, the impact on the vent valve seat is the same regardless of the requested torque.

[0079] Furthermore, the time interval t0-t2 is P. env1 High torque T under atmospheric pressure rq1 The request is that the time interval t8-t10 is P. env2 High torque T under atmospheric pressure rq1 Request. Both, in the initial acceleration phase, control pressure P. c Both pressures instantly drop to zero, producing a noticeable impact effect. During the pressurization and stabilization phase, the control pressure is lower due to the lower atmospheric pressure. During the deceleration phase, both control pressures are controlled to their maximum P. cmax Extend the push rod fully to open the vent valve and release the air. Therefore, during acceleration, different atmospheric pressures result in different impacts on the valve.

[0080] Specifically, the control method of this application can be integrated into the exhaust gas bypass valve control program. Figure 3 , Figure 4 , Figure 5 , Figure 8 and Figure 9 It can be seen from this that the time interval t0-t2 is P env1 High torque T under atmospheric pressure rq1 The request is for time t4-t6 to be P. env1 Small torque T under atmospheric pressure rq2 Request. Both, in the initial acceleration phase, control pressure P. c All are restricted to P cmin And control the pressure from P c0 To P cmin During the transition, the flow is filtered, and the valve stem displacement (push rod displacement) slowly rises to its maximum, with no noticeable impact on the valve plate (venting valve plate). During the pressure stabilization phase, the control pressure requiring higher torque is lower. During the deceleration phase, both control pressures are controlled to their maximum P. cmax The push rod is fully extended, and the vent valve is opened to release air. This demonstrates that the improved control method significantly reduces the impact pressure and velocity of the valve plate during seating, without affecting steady-state and deceleration conditions.

[0081] Furthermore, the time interval t0-t2 is P. env1 High torque T under atmospheric pressure rq1 The request is for time t8-t10 to be P. env2 High torque T under atmospheric pressure rq1 Request. For different atmospheric pressures, the control method of this application significantly reduces the impact pressure and velocity of the valve plate when it sits, and the pressure of the valve plate on the valve seat (venting valve seat) is consistent during acceleration under different atmospheric pressures.

[0082] The control method of this invention calculates the equilibrium point of the control pressure when the vent valve is fully closed based on the mechanical balance calculation formula of the vent valve, and then calculates the minimum control pressure based on the current equilibrium point pressure. This minimum control pressure is used to limit the lower limit of the control pressure during the pressurization process, effectively reducing the contact pressure when the vent valve seats. Secondly, before the control pressure approaches the minimum pressure, a control pressure (i.e., P) is output to the solenoid valve. c Filtering is applied to ensure the sensitivity of boost control without affecting normal boost regulation, effectively reducing the seating speed of the vent valve. These two processes complement each other, mitigating the impact of vent valve seating in any environment and under any operating condition, reducing wear on the booster vent valve, and extending its service life. Finally, this application also adjusts the initial pressure of the valve plate and valve seat based on the pressure regulation value (i.e., the minimum pressure offset) to ensure the vent valve can be fully closed, enhancing robustness.

[0083] The technical solution of this embodiment determines the initial pressure of the turbocharger bleed valve based on the performance parameters of the turbocharger and the operating parameters of the vehicle. The initial pressure is the minimum control pressure required to fully close the turbocharger bleed valve. The target pressure of the turbocharger bleed valve is determined based on the pressure regulation value and the initial pressure. The control parameters of the turbocharger bleed valve are determined based on the initial pressure, the target pressure, and the current control pressure. The turbocharger bleed valve is then controlled to operate based on these control parameters. Determining the target pressure based on the pressure regulation value and the minimum control pressure required to fully close the turbocharger bleed valve, and determining the control parameters based on the initial pressure, the target pressure, and the current control pressure, can reduce wear on the bleed valve plate and seat, extending the service life of the turbocharger bleed valve. This solves the problems of low sensitivity in mechanical turbocharger bleed valves, which fail to open the bleed valve when the pressure is insufficient, affecting engine operation; and the significant mechanical impact on the valve plate of electronically controlled turbocharger bleed valves during seating, which leads to excessive wear on the bleed valve plate and seat and affects the service life of the turbocharger bleed valve.

[0084] Example 2

[0085] Figure 10 This is a schematic diagram of the control device for a booster vent valve provided in Embodiment 2 of the present invention. Figure 10 As shown, the device includes: a first determining module 1001, a second determining module 1002, a third determining module 1003, and a device control module 1004.

[0086] The first determining module 1001 is used to determine the initial pressure of the turbocharger bleed valve based on the performance parameters of the turbocharger and the operating parameters of the vehicle, wherein the initial pressure is the minimum control pressure required to fully close the turbocharger bleed valve.

[0087] The second determining module 1002 is used to determine the target pressure of the booster vent valve based on the pressure regulation value and the initial pressure.

[0088] The third determining module 1003 is used to determine the control parameters of the booster vent valve based on the initial pressure, the target pressure, and the current control pressure of the booster vent valve.

[0089] Equipment control module 1004 is used to control the operation of the booster vent valve based on control parameters.

[0090] Optional performance parameters include the diaphragm box spring preload of the turbocharger, the bypass valve rocker arm lever ratio, the bypass valve area, and the diaphragm area; operating parameters include the inlet and outlet pressures of the turbocharger vent valve.

[0091] Optionally, the first determining module 1001 is specifically used to determine the reference pressure of the booster vent valve; and to determine the initial pressure based on the reference pressure, atmospheric pressure, diaphragm box spring preload, bypass valve rocker arm lever ratio, bypass valve area, diaphragm area, vortex inlet pressure and vortex outlet pressure.

[0092] Optionally, the reference pressure is the pressure between the vent valve plate and the vent valve seat of the turbocharger when the vent valve of the turbocharger is fully closed; the initial pressure is the control pressure of the vent valve of the turbocharger when the reference pressure is 0.

[0093] Optional, initial pressure P c0 = [F0-i*(P3-P4)*A2] / A1+P0, where F0 represents the diaphragm box spring preload, i represents the bypass valve rocker arm lever ratio, A2 represents the bypass valve area, A1 represents the diaphragm area, P3 represents the pressure before the vortex, P4 represents the pressure after the vortex, and P0 represents the atmospheric pressure.

[0094] Optional, target pressure P cmin =P c0 -P err , where P c0 P represents the initial pressure. err This indicates the pressure regulation value.

[0095] Optionally, the third determining module 1003 is specifically used to determine whether the current control pressure is less than or equal to the initial pressure; when the current control pressure is less than or equal to the initial pressure, the control parameters are determined based on the current control pressure, the initial pressure, and the target pressure.

[0096] The control device for the booster vent valve provided in the embodiments of the present invention can execute the control method for the booster vent valve provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the method.

[0097] Example 3

[0098] Figure 11 This is a schematic diagram of the structure of an electronic device provided in Embodiment 3 of the present invention. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (such as helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0099] like Figure 11 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 may also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0100] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0101] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as the control method for the booster exhaust valve.

[0102] In some embodiments, the method for controlling the turbocharger bleed valve may be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded into and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the control method for the turbocharger bleed valve described above may be performed. Alternatively, in other embodiments, processor 11 may be configured to perform the control method for the turbocharger bleed valve by any other suitable means (e.g., by means of firmware).

[0103] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0104] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0105] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0106] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0107] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), middleware components (e.g., application servers), or frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0108] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through a communication network. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0109] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and no limitation is imposed herein.

[0110] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A control method for a booster vent valve, characterized in that, include: The initial pressure of the turbocharger bleed valve is determined based on the performance parameters of the turbocharger and the operating parameters of the vehicle, wherein the initial pressure is the minimum control pressure required to fully close the turbocharger bleed valve; The target pressure of the booster vent valve is determined based on the pressure regulation value and the initial pressure. The control parameters of the booster vent valve are determined based on the initial pressure, the target pressure, and the current control pressure of the booster vent valve. The booster vent valve is controlled to operate based on the control parameters; The performance parameters include the diaphragm box spring preload of the booster, the bypass valve rocker arm lever ratio, the bypass valve area, and the diaphragm area; The operating parameters include the inlet pressure and outlet pressure of the booster vent valve; The determination of the initial pressure of the turbocharger blow-off valve based on the turbocharger's performance parameters and the vehicle's operating parameters includes: Determine the reference pressure of the booster vent valve; The initial pressure is determined based on the reference pressure, atmospheric pressure, diaphragm box spring preload, bypass valve rocker arm lever ratio, bypass valve area, diaphragm area, vortex inlet pressure, and vortex outlet pressure. The initial pressure Wherein, F0 represents the preload of the diaphragm box spring, i represents the lever ratio of the bypass valve rocker arm, A2 represents the area of ​​the bypass valve, A1 represents the area of ​​the diaphragm, P3 represents the pressure before the vortex, P4 represents the pressure after the vortex, and P0 represents the atmospheric pressure.

2. The method according to claim 1, characterized in that, The reference pressure is the pressure between the vent valve plate and the vent valve seat of the booster when the booster vent valve is fully closed; the initial pressure is the control pressure of the booster vent valve when the reference pressure is 0.

3. The method according to claim 1, characterized in that, The target pressure P cmin =P c0 -P err , where P c0 P represents the initial pressure. err This indicates the pressure adjustment value.

4. The method according to claim 1, characterized in that, The process of determining the control parameters of the booster vent valve based on the initial pressure, the target pressure, and the current control pressure of the booster vent valve includes: Determine whether the current control pressure is less than or equal to the initial pressure; When the current control pressure is less than or equal to the initial pressure, the control parameters are determined based on the current control pressure, the initial pressure, and the target pressure.

5. A control device for a booster vent valve, characterized in that, The control device for the booster vent valve is used to implement the control method for the booster vent valve according to any one of claims 1 to 4, and the control device for the booster vent valve includes: The first determining module is used to determine the initial pressure of the turbocharger bleed valve based on the performance parameters of the turbocharger and the operating parameters of the vehicle, wherein the initial pressure is the minimum control pressure required to fully close the turbocharger bleed valve; The second determining module is used to determine the target pressure of the booster vent valve based on the pressure regulation value and the initial pressure. The third determining module is used to determine the control parameters of the booster vent valve based on the initial pressure, the target pressure, and the current control pressure of the booster vent valve. The equipment control module is used to control the operation of the booster vent valve based on the control parameters.

6. An electronic device, characterized in that, The electronic device includes: At least one processor; and a memory communicatively connected to said at least one processor; The memory stores a computer program that can be executed by the at least one processor, which enables the at least one processor to perform the control method for the booster bleed valve according to any one of claims 1 to 4.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed by a processor, implement the control method for the booster vent valve as described in any one of claims 1 to 4.

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