Surge valve control method and device, electronic equipment and vehicle

Abstract

The invention discloses a surge valve control method and device, electronic equipment and a vehicle, relates to the field of engines, and aims to determine whether an engine is in a target working condition representing that a supercharger is liable to have a surge phenomenon or not. And on the basis of determining that the engine is in the target working condition, according to the intensity of the change of the operation state of the engine under the target working condition, when the engine is determined to be in a relatively strong transient working condition, whether a surge valve is opened or not is determined in time in combination with the opening degree of a throttle valve. And when it is determined that the surge valve is not opened, whether the surge valve is opened or not is further determined according to the air inlet flow of the engine and the opening degree of the throttle valve. Whether the surge valve is opened or not is judged according to the target working condition, the strong transient working condition and the surge flow of the engine in sequence, the multiple working conditions and operation conditions of the engine are synthesized, the opening condition of the surge valve is more accurately determined, the situation that the surge valve is opened abnormally can be effectively reduced, and therefore the situation that power of the engine is insufficient is effectively reduced.

Description

Technical Field

[0001] The present application relates to the technical field of engines, and in particular, to a surge valve control method, device, electronic device, and vehicle. Background Art

[0002] When the electric throttle of a natural gas engine suddenly closes, the pressure in front of the throttle (boost pressure) suddenly increases, and the intake air flow suddenly decreases. At this time, the boost pressure is unstable and airflow noise is generated, resulting in surge of the supercharger. Currently, surge valves such as mechanical surge valves and electronically controlled surge valves are commonly used to release excess intake air when the throttle closes to prevent the supercharger from surging. However, there are still deficiencies in the current control of electronically controlled surge valves, and abnormal opening of the electronically controlled surge valves is likely to occur, leading to problems such as insufficient power and surge. Summary of the Invention

[0003] In view of the above problems, the present application provides a surge valve control method, device, electronic device, and vehicle to achieve the purpose of improving the accuracy of surge valve opening and avoiding insufficient power of the engine. The specific solutions are as follows:

[0004] The first aspect of the present application provides a surge valve control method, including:

[0005] Determine whether the engine is in a target operating condition, where the target operating condition is an operating condition indicating that the supercharger is prone to surge;

[0006] When it is determined that the engine is in the target operating condition, determine whether to open the surge valve according to the severity of the change in the operating state of the engine in the target operating condition and the opening of the throttle;

[0007] When it is determined not to open the surge valve, determine whether to open the surge valve according to the intake air flow of the engine and the opening of the throttle.

[0008] In a possible implementation, the determining whether the engine is in a target operating condition includes:

[0009] Determine whether the engine is in the target operating condition according to the throttle opening change rate, the boost pressure of the supercharger, and the engine speed.

[0010] In a possible implementation, the determining whether the engine is in a target operating condition according to the throttle opening change rate, the boost pressure of the supercharger, and the engine speed includes:

[0011] If the opening change rate is less than the opening change rate limit value, the boost pressure is greater than the boost pressure limit value, and the speed is within the speed limit range, it is determined that the engine is in the target operating condition.

[0012] In a possible implementation, when it is determined that the engine is in the target operating condition, determining whether to open the surge valve according to the severity of the change in the operating state of the engine in the target operating condition and the opening degree of the throttle valve includes:

[0013] If the load change rate of the engine is less than the load limit value and the opening degree of the throttle valve is less than the first throttle valve limit value, it is determined to open the surge valve.

[0014] In a possible implementation, determining whether to open the surge valve according to the intake air flow of the engine and the opening degree of the throttle valve includes:

[0015] If the intake air flow is less than the surge air flow value and the opening degree of the throttle valve is less than the second throttle valve limit value, it is determined to open the surge valve.

[0016] In a possible implementation, the determination process of the intake air flow includes:

[0017] The intake air flow is calculated according to the engine speed, intake air pressure, intake pipe volume, intake air temperature and intake pipe efficiency.

[0018] In a possible implementation, the determination process of the surge air flow value includes:

[0019] The surge air flow value is determined from the combined operating curve of the supercharger according to the ratio of the pressures before and after the throttle valve.

[0020] A second aspect of the present application provides a surge valve control device, including:

[0021] A target operating condition determination module, configured to determine whether the engine is in a target operating condition, where the target operating condition is an operating condition in which the supercharger is prone to surge;

[0022] A first opening control module, configured to determine whether to open the surge valve according to the severity of the change in the operating state of the engine in the target operating condition and the opening degree of the throttle valve when the target operating condition determination module determines that the engine is in the target operating condition; and,

[0023] A second opening control module, configured to determine whether to open the surge valve according to the intake air flow of the engine and the opening degree of the throttle valve when the first opening control module determines not to open the surge valve.

[0024] A third aspect of the present application provides an electronic device, including at least one processor and a memory connected to the processor, where:

[0025] The memory is used to store a computer program;

[0026] The processor is used to execute the computer program so that the electronic device can implement the surge valve control method according to the first aspect or any implementation manner of the first aspect as described above.

[0027] A fourth aspect of the present application provides a vehicle, including the electronic device according to the third aspect as described above.

[0028] A fifth aspect of the present application provides a computer program product, including computer-readable instructions, which when running on an electronic device, enable the electronic device to implement the surge valve control method according to the first aspect or any implementation manner of the first aspect as described above.

[0029] A sixth aspect of the present application provides a computer storage medium, which carries one or more computer programs, and when the one or more computer programs are executed by an electronic device, they can enable the electronic device to implement the surge valve control method according to the first aspect or any implementation manner of the first aspect as described above.

[0030] By means of the above technical solution, the surge valve control method provided by the present application first determines whether the engine is in a target operating condition indicating that the supercharger is prone to surge. On the basis of determining that the engine is in the target operating condition, according to the severity of the change in the operating state of the engine under the target operating condition, when it is determined that the engine is in a relatively strong transient operating condition, in combination with the throttle opening, it is timely determined whether to open the surge valve. When it is determined not to open the surge valve, further according to the intake air flow of the engine and the throttle opening, it is determined whether to open the surge valve. By sequentially judging whether to open the surge valve based on the engine target operating condition, strong transient operating condition, and surge flow rate, it is possible to comprehensively consider various operating conditions and operating situations of the engine, more accurately determine the opening situation of the surge valve, effectively reduce the abnormal opening of the surge valve, thereby effectively reducing the situation of insufficient engine power, and improving the stability and reliability of the engine operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In combination with the accompanying drawings and with reference to the following specific embodiments, the above and other features, advantages, and aspects of the various embodiments of the present disclosure will become more apparent. Throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic, and the original components and elements are not necessarily drawn to scale.

[0032] Figure 1 It is a flowchart of a surge valve control method provided by the present application;

[0033] Figure 2 It is a schematic diagram of a surge valve control principle provided by the present application;

[0034] Figure 3 It is a structural diagram of a surge valve control device provided by the present application;

[0035] Figure 4 The structural diagram of an electronic device provided for this application. Detailed implementation manners

[0036] The embodiments of this application will be described below with reference to the accompanying drawings in the embodiments of this application. The terms used in the implementation manners part of this application are only used to explain the specific embodiments of this application, rather than aiming to limit this application.

[0037] The embodiments of this application will be described below with reference to the accompanying drawings. Those of ordinary skill in the art will know that with the development of technology and the emergence of new scenarios, the technical solutions provided by the embodiments of this application are equally applicable to similar technical problems.

[0038] The terms "first", "second", etc. in the specification, claims and above-mentioned accompanying drawings of this application are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances, which is only a way of distinction adopted when describing objects with the same attributes in the embodiments of this application. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion, so that a process, method, system, product or device comprising a series of units does not have to be limited to those units, but may include other units not clearly listed or inherent to these process, method, product or device.

[0039] Currently, mechanical surge valves are commonly used in natural gas engines. In addition, there is also a form of electronically controlled surge valve. The electronically controlled surge valve determines the opening of the valve body through an electromagnetic coil and releases excess intake air when the throttle valve is closed to prevent the supercharger from surging. For details, reference can be made to Figure 2 The figure shows the structural diagram of a typical intake system of a natural gas engine, where the supercharger is the core power source of the whole system. It usually consists of two parts: a turbine and a compressor, which are installed on the same shaft. The turbine is located downstream of the engine exhaust manifold. The high-temperature and high-pressure engine exhaust gas impacts the blades of the turbine, causing it to rotate at high speed. The compressor is located upstream of the engine intake manifold. The compressor impeller coaxial with the turbine rotates at high speed, sucking in and compressing the ambient air from the air filter. By compressing the air, the air density entering the engine cylinder is increased, so that more air (and corresponding fuel) can enter the cylinder for combustion under the same displacement, significantly improving the power and torque output of the engine.

[0040] Intercooler: When air is compressed, its temperature will increase significantly (according to the gas law). The density of hot air will decrease (thermal expansion and contraction), offsetting part of the supercharging effect. Hot air is also prone to cause engine knocking. The compressed hot air flows into the intercooler through the inlet. There are many heat dissipation pipes and fins inside the intercooler. The air flowing outside (the oncoming air when the vehicle is moving or the forced air flow of the fan) or the coolant flows through the fins, taking away the heat of the hot air in the pipes.

[0041] Throttle valve: Controls the air flow into the engine cylinders. Its opening is controlled by the driver through the accelerator pedal. The larger the opening, the more air is allowed to flow to the intake manifold; the smaller the opening, the less air is allowed to pass through.

[0042] Intake manifold: Distributes the air (or air / fuel mixture) passing through the throttle valve evenly to each cylinder of the engine.

[0043] Ensure that each cylinder receives as even an air supply as possible to ensure smooth engine operation.

[0044] Surge valve: A key component to prevent the supercharger from surging. It is also called a bypass valve, pressure relief valve, etc.

[0045] In a turbocharging system, "surge" refers to a harmful unstable air flow state, mainly occurring at the compressor end. When the compressor impeller rotates at high speed to compress air, if the downstream air flow channel is suddenly blocked or the flow rate decreases sharply (the most common situation is when the throttle valve is quickly closed), the compressed air has nowhere to go, and a strong reverse pressure wave will be generated. This pressure wave will impact the impeller against the rotation direction of the impeller, resulting in: the air will flow back from the high-pressure compressor outlet to the low-pressure compressor inlet. The pressure at the compressor outlet drops sharply, producing obvious abnormal noises such as "puff puff puff" or "chirp chirp chirp". The severe pressure fluctuations and air flow impacts will cause impact loads on the compressor impeller and bearings. Long-term or severe surging will damage the supercharger.

[0046] The core task of the surge valve is to provide an additional and controllable relief channel for the compressed high-pressure air under conditions that may cause surging (mainly when the throttle valve is quickly closed), to avoid the reverse flow impact on the impeller due to the compressed air having nowhere to go.

[0047] However, the current electronic control of the surge valve is not mature. The misidentification causes the surge valve to open, which will lead to insufficient engine power, surging and other problems.

[0048] To solve the above problems, the embodiments of the present application provide a surge valve control method. The surge valve control method of the embodiments of the present application will be introduced in detail below with reference to the accompanying drawings.

[0049] Refer to Figure 1 ,Figure 1 The flowchart of a surge valve control method provided by an embodiment of the present application is shown as follows. Figure 1 As shown, a surge valve control method provided by an embodiment of the present application may include steps 101 to 103, and the following will describe these steps in detail.

[0050] 101. Determine whether the engine is in a target operating condition, where the target operating condition is an operating condition characterized by the supercharger being prone to surge.

[0051] Specifically, as described above, considering that the surge of the turbocharger is mainly because when the driver quickly releases the accelerator pedal (such as during gear shifting or deceleration), the throttle valve closes rapidly, and the air flow rate flowing into the engine decreases sharply or even is cut off. However, due to the inertia of the turbocharger (the turbine and impeller have large mass and high rotational speed), it cannot stop immediately. The compressor impeller is still rotating at a high speed and continues to compress the air at its inlet. At this time, the downstream passage (after the throttle valve) is almost blocked, while the compressor continues to pump out air continuously. This results in a sharp increase in the pressure at the outlet of the compressor and a sharp decrease in the air flow rate, and at this time, a surge phenomenon of the supercharger will occur.

[0052] In this regard, it is necessary to identify that the engine is about to enter such an operating condition, so as to be able to prepare in advance for the opening of the electronic control surge valve. Once the target operating condition is identified, it enters the preparation stage for the opening control of the surge valve. Here, the target operating condition can be the load reduction operating condition of the engine, that is, when the load of the engine shows a reduction phenomenon, and when the degree of load reduction reaches a certain standard, it can be determined that the load reduction operating condition has been entered. Considering that the parameters of key components such as the throttle valve play a crucial role in the judgment of the load reduction operating condition, when determining the load reduction operating condition, the load reduction operating condition can be identified according to the obvious characteristics of the load reduction operating condition shown by parameters such as the throttle valve opening change rate, the supercharging pressure of the supercharger, and the engine speed.

[0053] Of course, those skilled in the art can also use other relevant parameters of the engine operation to identify the above load reduction operating condition, which is not limited here.

[0054] 102. When it is determined that the engine is in the target operating condition, determine whether to open the surge valve according to the severity of the change in the operating state of the engine in the target operating condition and the opening of the throttle valve.

[0055] Specifically, on the basis of the above steps, when it is determined that the engine is in a load reduction condition, it does not necessarily cause the supercharger to surge. For example, when the driver is just normally and slowly reducing the speed, the supercharger will not surge. To avoid controlling the surge valve to open at this time, resulting in power decline and supercharger surge caused by pressure imbalance. It is possible to determine whether to open the surge valve according to the severity of the change in the operating state of the engine under the target condition and the opening of the throttle valve.

[0056] The severity of the change in the operating state under the target condition here can be characterized by the load change rate of the engine, and the control of whether to open the surge valve is jointly carried out based on the severity of the change under the instantaneous condition and the opening of the throttle valve.

[0057] 103. When it is determined not to open the surge valve, determine whether to open the surge valve according to the intake air flow of the engine and the opening of the throttle valve.

[0058] Specifically, when in the load reduction condition and there is no such strong transient load reduction condition as described above, the surge valve may not be opened at this time. Instead, based on the current intake air flow of the engine and the opening of the throttle valve, a judgment is made on whether there is an air flow that causes the supercharger to surge, and then whether to open the surge valve is realized to prevent the occurrence of supercharger surge.

[0059] When the driver steps on the accelerator again and the throttle valve is reopened and boost air is required, the pressure at the compressor outlet will drop (because the air flows to the engine). For a mechanical surge valve, the pressure acting on the actuator drops below the set value, and the spring force (or control system) pushes the surge valve closed. All the exhaust gas energy is reused to drive the turbine, the supercharger speed rises, and the normal boosting process is restored. For an electronically controlled surge valve, it can be controlled to close according to the re-increase of the throttle valve opening, so that the turbocharging system enters the normal working state.

[0060] From the above, it can be seen that in this surge valve control method, by sequentially judging whether to open the surge valve based on the engine target condition, strong transient condition, and surge flow rate, it realizes the integration of various working conditions and operating conditions of the engine, more accurately determines the opening situation of the surge valve, can effectively reduce the abnormal opening of the surge valve, thereby effectively reducing the situation of insufficient engine power, and improving the stability and reliability of engine operation.

[0061] In one embodiment, to improve the accuracy of target condition identification and reduce the phenomenon of mis-opening of the surge valve, determining whether the engine is in the target condition in step 101 above includes:

[0062] Determine whether the engine is in the target condition according to the change rate of the throttle valve opening, the boost pressure of the supercharger, and the engine speed.

[0063] Specifically, if the opening change rate is less than the opening change rate limit value, the supercharging pressure is greater than the supercharging pressure limit value, and the rotational speed is within the rotational speed limit range, it is determined that the engine is in the target operating condition.

[0064] For example, when the opening change rate of the throttle valve is less than the limit value a0 (e.g., less than -30% / s), the supercharging pressure of the supercharger is greater than the limit value b0, and the engine speed is within a certain range (c0, c1), it is identified as a load reduction operating condition. When taking the absolute value of the opening change rate, correspondingly, when the opening change rate of the throttle valve is greater than 30% / s, the supercharging pressure of the supercharger is greater than the limit value b0, and the engine speed is within a certain range (c0, c1), it is also identified as a load reduction operating condition. Those skilled in the art can select the positive or negative value of the above-mentioned opening change rate as needed, and no limitation is made here.

[0065] In another embodiment, when it is determined that the engine is in the target operating condition, whether to open the surge valve is determined according to the severity of the change in the operating state of the engine under the target operating condition and the opening of the throttle valve, which may specifically include:

[0066] If the load change rate of the engine is less than the load limit value and the opening of the throttle valve is less than the first throttle valve limit value, it is determined to open the surge valve.

[0067] Specifically, the load change rate here can be represented in the form of a negative number, and the load change rate = (load t2 - load t1) / (t2 - t1), where the time t2 is later than the time t1.

[0068] In other embodiments, to improve the accuracy of determining whether to open the surge valve based on the surge flow limit and reduce the situation of mis-opening of the surge valve, the above step 103 determines whether to open the surge valve according to the intake air flow of the engine and the opening of the throttle valve, which may specifically include:

[0069] If the intake air flow is less than the surge flow value and the opening of the throttle valve is less than the second throttle valve limit value, it is determined to open the surge valve.

[0070] Specifically, the intake air flow is the target intake air flow at the target intake air pressure calculated according to the required torque generated by the throttle opening. The determination process of the intake air flow includes:

[0071] The intake air flow is calculated based on the rotational speed, intake air pressure, intake pipe volume, intake air temperature, and intake pipe efficiency of the engine.

[0072] Specifically, when calculating the intake air flow, the intake air flow (g / s) can be calculated according to the speed density method: Intake air flow (g / s) = engine speed × intake pipe volume × intake pressure ÷ (intake air temperature × Rg) × intake pipe efficiency, where Rg represents the critical specific volume. In engine management, the critical specific volume is an important parameter because it is related to the performance of the engine under different operating conditions. By controlling the intake air temperature and pressure, the combustion process can be optimized, and the efficiency and performance of the engine can be improved. This parameter can be selected and adjusted accordingly according to different engines in specific applications, and no limitation is made here.

[0073] The process of determining the surge flow value may specifically include:

[0074] Determine the surge flow value from the supercharger combined operation curve according to the ratio of the pressures before and after the throttle valve.

[0075] Specifically, based on the ratio of the pressures before and after the throttle valve, i.e., the pressure ratio h, the surge flow value can be obtained from the surge line determined from the supercharger combined operation curve, where the abscissa of the surge line is the pressure ratio and the ordinate is the corresponding surge air flow. The pressure before and after the throttle valve can be measured by pressure sensors at the corresponding positions. When the intake air flow g of the engine is less than h1 and the throttle valve opening a is less than the limit value, the control state Z of the output valve = 1 (indicating that the surge valve is open), otherwise Z = 0 (indicating that the surge valve is closed).

[0076] It can be understood that those skilled in the art can select and adjust the limit values of the above various parameters accordingly according to different engine models, and details are not described here again.

[0077] The above introduces a surge valve control method provided by an embodiment of the present application. Next, a device for executing the above surge valve control method will be introduced.

[0078] Please refer to Figure 3 , Figure 3 which is a schematic structural diagram of a surge valve control device provided by an embodiment of the present application. As Figure 3 shown, the surge valve control device includes:

[0079] A target operating condition determination module 301, configured to determine whether the engine is in a target operating condition, where the target operating condition is an operating condition indicating that the supercharger is prone to surge.

[0080] A first opening control module 302, configured to determine whether to open the surge valve according to the severity of the change in the operating state of the engine under the target operating condition and the opening of the throttle valve when the target operating condition determination module 301 determines that the engine is in the target operating condition. And,

[0081] The second opening control module 303 is configured to determine whether to open the surge valve according to the intake air flow rate of the engine and the opening degree of the throttle valve when the first opening control module 302 determines not to open the surge valve.

[0082] In a possible implementation, the process of the target operating condition determination module 301 determining whether the engine is in the target operating condition includes:

[0083] Determine whether the engine is in the target operating condition according to the opening degree change rate of the throttle valve, the supercharging pressure of the supercharger, and the engine speed.

[0084] In a possible implementation, the process of the target operating condition determination module 301 determining whether the engine is in the target operating condition according to the opening degree change rate of the throttle valve, the supercharging pressure of the supercharger, and the engine speed includes:

[0085] If the opening degree change rate is less than the opening degree change rate limit value, the supercharging pressure is greater than the supercharging pressure limit value, and the speed is within the speed limit range, it is determined that the engine is in the target operating condition.

[0086] In a possible implementation, when the target operating condition determination module 301 determines that the engine is in the target operating condition, the process of the first opening control module 302 determining whether to open the surge valve according to the severity of the change in the operating state of the engine under the target operating condition and the opening degree of the throttle valve includes:

[0087] If the load change rate of the engine is less than the load limit value and the opening degree of the throttle valve is less than the first throttle valve limit value, it is determined to open the surge valve.

[0088] In a possible implementation, the process of the second opening control module 303 determining whether to open the surge valve according to the intake air flow rate of the engine and the opening degree of the throttle valve includes:

[0089] If the intake air flow rate is less than the surge flow rate value and the opening degree of the throttle valve is less than the second throttle valve limit value, it is determined to open the surge valve.

[0090] In a possible implementation, the process of determining the intake air flow rate in the second opening control module 303 includes:

[0091] Calculate the intake air flow rate according to the engine speed, intake air pressure, intake pipe volume, intake air temperature, and intake pipe efficiency.

[0092] In a possible implementation, the process of determining the surge flow rate value in the second opening control module 303 includes:

[0093] Determine the surge flow rate value from the combined operating curve of the supercharger according to the ratio of the pressures before and after the throttle valve.

[0094] An embodiment of the present application also provides an electronic device. Refer to Figure 4 As shown, it shows a schematic structural diagram of an electronic device suitable for implementing the electronic device in the embodiment of the present application. The electronic device in the embodiment of the present application may include, but is not limited to, such as an ECU (Electronic Control Unit), a VCU (Vehicle Control Unit), an MCU (Micro Controller Unit), an HCU (Hybrid Control Unit), etc. Figure 4 The electronic device shown is only an example and should not impose any limitations on the functions and usage scope of the embodiment of the present application.

[0095] As Figure 4 shown, the electronic device may include a processing device (such as a central processing unit, a graphics processing unit, etc.) 401, which may perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 402 or the program loaded from the storage device 408 into the random access memory (RAM) 403. When the electronic device is powered on, various programs and data required for the operation of the electronic device are also stored in the RAM 403. The processing device 401, the ROM 402, and the RAM 403 are connected to each other through a bus 404. The input / output (I / O) interface 405 is also connected to the bus 404.

[0096] Generally, the following devices may be connected to the I / O interface 405: an input device 406 including, for example, a touch screen, a touchpad, a keyboard, a mouse, a camera, a microphone, an accelerometer, a gyroscope, etc.; an output device 407 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; a storage device 408 including, for example, a memory card, a hard disk, etc.; and a communication device 409. The communication device 409 may allow the electronic device to communicate with other devices wirelessly or wiredly to exchange data. Although Figure 4 the shown electronic device has various devices, it should be understood that it is not required to implement or have all the shown devices. Instead, more or fewer devices may be implemented or had.

[0097] An embodiment of the present application also provides a computer program product including computer-readable instructions, which, when running on an electronic device, enable the electronic device to implement any one of the surge valve control methods provided in the embodiment of the present application.

[0098] In an embodiment of the present application, a computer-readable storage medium is further provided. 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 any of the surge valve control methods provided in the embodiments of the present application.

[0099] In an embodiment of the present application, a vehicle is further provided, including the electronic device described in the above embodiment.

[0100] In addition, it should be noted that the device embodiments described above are only illustrative. The units described as separate components may or may not be physically separated. The components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. In addition, in the drawings of the device embodiments provided in the present application, the connection relationship between the modules indicates that they have a communication connection, which can be specifically implemented as one or more communication buses or signal lines.

[0101] Through the description of the above embodiments, those skilled in the art can clearly understand that the present application can be implemented by means of software plus necessary general hardware, and of course, it can also be implemented by dedicated hardware including application-specific integrated circuits, dedicated CPUs, dedicated memories, dedicated components, etc. Generally, functions completed by computer programs can be easily implemented by corresponding hardware, and the specific hardware structures for implementing the same function can also be various, such as analog circuits, digital circuits or dedicated circuits. However, for the present application, in more cases, software program implementation is a better implementation method. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. The computer software product is stored in a readable storage medium, such as a floppy disk, USB flash drive, mobile hard disk, ROM, RAM, magnetic disk or optical disc of a computer, etc., and includes several instructions for causing a computer device (which can be a personal computer, training device, or network device, etc.) to execute the methods described in the various embodiments of the present application.

[0102] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product.

[0103] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions may be transmitted from one website, computer, training device, or data center to another website, computer, training device, or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that a computer can store or a data storage device such as a training device or data center that includes one or more integrated available media. The available medium may be a magnetic medium (such as a floppy disk, hard disk, magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (SSD)), etc.

Claims

1. A surge valve control method, characterized in that Including: Determine whether the engine is in a target operating condition, where the target operating condition is an operating condition characterizing that the supercharger is prone to surge; When it is determined that the engine is in the target operating condition, determine whether to open the surge valve according to the severity of the change in the operating state of the engine under the target operating condition and the opening degree of the throttle valve; When it is determined not to open the surge valve, determine whether to open the surge valve according to the intake air flow of the engine and the opening degree of the throttle valve.

2. The surge valve control method according to claim 1, wherein The determination of whether the engine is in the target operating condition includes: Determine whether the engine is in the target operating condition according to the throttle opening change rate, the supercharger boost pressure, and the engine speed.

3. The surge valve control method according to claim 2, characterized in that The determination of whether the engine is in the target operating condition according to the throttle opening change rate, the supercharger boost pressure, and the engine speed includes: If the opening change rate is less than the opening change rate limit value, the boost pressure is greater than the boost pressure limit value, and the speed is within the speed limit range, it is determined that the engine is in the target operating condition.

4. The surge valve control method according to claim 1, characterized in that, When it is determined that the engine is in the target operating condition, determine whether to open the surge valve according to the severity of the change in the operating state of the engine under the target operating condition and the opening degree of the throttle valve, including: If the load change rate of the engine is less than the load limit value and the opening degree of the throttle valve is less than the first throttle valve limit value, it is determined to open the surge valve.

5. The surge valve control method according to any one of claims 1 to 4, characterized in that, The determination of whether to open the surge valve according to the intake air flow of the engine and the opening degree of the throttle valve includes: If the intake air flow is less than the surge flow value and the opening degree of the throttle valve is less than the second throttle valve limit value, it is determined to open the surge valve.

6. The surge valve control method according to claim 5, characterized in that The determination process of the intake air flow includes: Calculate the intake air flow according to the engine speed, intake air pressure, intake pipe volume, intake air temperature, and intake pipe efficiency.

7. The surge valve control method according to claim 5, characterized in that The determination process of the surge flow value includes: Determine the surge flow value from the supercharger combined operating curve according to the ratio of the pressures before and after the throttle valve.

8. A surge valve control device, characterized in that, Including: A target operating condition determination module for determining whether the engine is in a target operating condition, where the target operating condition is an operating condition characterizing that the supercharger is prone to surge; A first opening control module for determining whether to open the surge valve according to the severity of the change in the operating state of the engine under the target operating condition and the opening degree of the throttle valve when the target operating condition determination module determines that the engine is in the target operating condition; And, A second opening control module for determining whether to open the surge valve according to the intake air flow of the engine and the opening degree of the throttle valve when the first opening control module determines not to open the surge valve.

9. An electronic device, characterized in that, Including at least one processor and a memory connected to the processor, where: The memory is used to store a computer program; The processor is used to execute the computer program so that the electronic device can implement the surge valve control method according to any one of claims 1 to 7.

10. A vehicle, characterized in that, Including the electronic device according to claim 9.

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