A surge valve control method and device, electronic equipment and vehicle

Abstract

The application discloses a surge valve control method and device, electronic equipment and vehicle, and relates to the field of engines. Whether the engine is in a target working condition in which the supercharger is prone to surging is determined. When it is determined that the engine is in the target working condition, whether the surge valve is opened is determined in combination with the opening degree of the throttle valve according to the severity of the change in the operating state of the engine in the target working condition. When it is determined that the surge valve is not opened, whether the surge valve is opened is further determined according to the intake flow of the engine and the opening degree of the throttle valve. Whether the surge valve is opened is determined according to the engine target working condition, the strong transient working condition and the surging flow in sequence, the opening of the surge valve is determined more accurately by comprehensively considering various working conditions and operating states of the engine, the abnormal opening of the surge valve is effectively reduced, and the power shortage of the engine 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 and device, an electronic device, and a vehicle. BACKGROUND

[0002] When the electrical throttle of a natural gas engine suddenly closes, the pressure before the throttle (boost pressure) suddenly increases, the intake flow suddenly decreases, at this time the boost pressure is unstable and airflow noise is generated, causing the supercharger to surge. The current commonly used surge valve, such as a mechanical surge valve and an electronically controlled surge valve, releases excess intake air when the throttle is closed to prevent the supercharger from surging. However, the current control of the electronically controlled surge valve still has deficiencies, and the electronically controlled surge valve is prone to abnormal opening, resulting in insufficient power and surging. SUMMARY

[0003] In view of the above problems, the present application provides a surge valve control method, device, electronic device and vehicle to improve the accuracy of the opening of the surge valve and avoid the problem of insufficient power of the engine. The specific scheme is as follows:

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

[0005] determining whether the engine is in a target working condition, the target working condition being a working condition in which the supercharger is prone to surging;

[0006] when it is determined that the engine is in the target working condition, determining whether to open the surge valve according to the degree of change in the operating state of the engine in the target working condition and the opening degree of the throttle;

[0007] when it is determined not to open the surge valve, determining whether to open the surge valve according to the intake flow of the engine and the opening degree of the throttle.

[0008] In a possible implementation, the determination of whether the engine is in a target working condition comprises:

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

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

[0011] if the opening degree change rate is less than an opening degree change rate limit value, the boost pressure is greater than a boost pressure limit value, and the engine speed is within a speed limit interval, it is determined that the engine is in the target working condition.

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

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

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

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

[0016] In a possible implementation, the determining process of the intake flow rate comprises:

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

[0018] In a possible implementation, the determining process of the surge flow rate value comprises:

[0019] The surge flow rate value is determined from a turbocharger combined operation curve according to the ratio of the pressure before and after the throttle valve.

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

[0021] a target working condition determining module configured to determine whether the engine is in a target working condition, the target working condition being a working condition in which the turbocharger is prone to surge;

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

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

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

[0025] The memory is configured to store a computer program.

[0026] The processor is configured to execute the computer program to enable the electronic device to implement the surge valve control method of the first aspect or any implementation manner of the first aspect.

[0027] The fourth aspect of the present application provides a vehicle comprising the electronic device of the third aspect.

[0028] The fifth aspect of the present application provides a computer program product comprising computer readable instructions which, when executed on an electronic device, cause the electronic device to implement the surge valve control method of the first aspect or any implementation manner of the first aspect.

[0029] The sixth aspect of the present application provides a computer storage medium carrying one or more computer programs which, when executed by an electronic device, enable the electronic device to implement the surge valve control method of the first aspect or any implementation manner of the first aspect.

[0030] By the above technical solution, the surge valve control method provided by the present application first determines whether the engine is in a target working condition representing that the supercharger is prone to surge. On the basis of determining that the engine is in the target working condition, according to the degree of change in the running state of the engine in the target working condition, when it is determined that the engine is in a relatively strong transient working condition, the opening degree of the throttle valve is combined to determine whether to open the surge valve in a timely manner. When it is determined not to open the surge valve, whether to open the surge valve is further determined according to the intake flow of the engine and the opening degree of the throttle valve. By sequentially determining whether to open the surge valve according to the engine target working condition, the strong transient working condition and the surge flow, the opening of the surge valve is determined more accurately by comprehensively considering various working conditions and running states of the engine, which can effectively reduce the abnormal opening of the surge valve, thereby effectively reducing the insufficient power of the engine and improving the stability and reliability of the engine operation. BRIEF DESCRIPTION OF DRAWINGS

[0031] The above and other features, advantages, and aspects of the embodiments of the present disclosure will become more apparent by describing in detail the following specific embodiments with reference to the attached drawings. Throughout the drawings, the same or similar reference numerals refer to the same or similar elements. It should be understood that the drawings are schematic, and the sizes and elements are not necessarily drawn to scale.

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

[0033] Figure 2 A surge valve control principle diagram provided by the present application;

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

[0035] Figure 4 This is a structural diagram of an electronic device provided in this application. DETAILED DESCRIPTION

[0036] The following describes the embodiments of the present application in conjunction with the accompanying drawings. The terms used in the implementation methods of the present application are only used to explain the specific embodiments of the present application and are not intended to limit the present application.

[0037] The embodiments of the present application are described below in conjunction with the accompanying drawings. Those skilled in the art will appreciate that, with the development of technology and the emergence of new scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0038] The terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances, and this is merely a way of distinguishing the objects of the same attributes when describing them in the embodiments of the present application. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, so that the process, method, system, product or equipment comprising a series of units need not be limited to those units, but may include other units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0039] The current natural gas engines generally use mechanical surge valves. In addition, there are also electronically controlled surge valves. The electronically controlled surge valve uses a solenoid to determine the valve body is open, and releases excess intake air when the throttle is closed to prevent the supercharger from surging. For details, please refer to Figure 2 The following diagram shows the structure of a typical intake system for a natural gas engine, where the supercharger is the core power source of the entire system. It typically consists of two parts: a turbine and a compressor, mounted on the same shaft. The turbine is located downstream of the engine's exhaust manifold. High-temperature, high-pressure engine exhaust gas strikes the turbine blades, causing them to rotate at high speed. The compressor is located upstream of the engine's intake manifold. The compressor wheel, coaxial with the turbine, rotates at high speed, drawing in and compressing ambient air from the air filter. This compressed air increases the density of the air entering the engine cylinders, allowing more air (and corresponding fuel) to enter the cylinders for combustion within the same displacement, significantly increasing the engine's power and torque output.

[0040] Intercooler: When air is compressed, its temperature rises significantly (according to the gas law). High-temperature air density decreases (thermal expansion), offsetting part of the supercharging effect. High-temperature air is also prone to engine knock. The high-temperature air after compression flows into the inlet of the intercooler. The intercooler has many heat dissipation pipes and fins inside. External flowing air (wind or fan forced air flow when the vehicle is running) or coolant flows through the fins, taking away the heat of the hot air in the pipes.

[0041] Throttle: Controls the air flow into the engine cylinders. Its opening degree is controlled by the driver through the accelerator pedal. The larger the opening degree, the more air is allowed to flow into the intake manifold; the smaller the opening degree, 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] Ensures that each cylinder receives as uniform an air supply as possible, ensuring smooth engine operation.

[0044] Surge valve: A key component to prevent surges in the supercharger. Also known as bypass valve, pressure relief valve, etc.

[0045] In the turbocharger system, "surge" refers to a harmful unstable airflow state, mainly occurring at the compressor end. When the compressor impeller rotates at high speed to compress air, if the downstream airflow passage is suddenly blocked or the flow is suddenly reduced (the most common case is that the throttle valve is quickly closed), the compressed air has nowhere to go, and a strong reverse pressure wave is generated. This pressure wave will impact the impeller in the opposite direction of rotation, causing: 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 a noticeable "puff puff puff" or "chirp chirp" sound. Severe pressure fluctuations and airflow impact will cause impact load on the compressor impeller and bearings, and long-term or severe surges will damage the supercharger.

[0046] The core task of the surge valve is to provide an additional, controllable discharge channel for the compressed high-pressure air in the working condition that may cause surging (mainly when the throttle valve is quickly closed), to avoid the reverse flow of high-pressure air impacting the impeller.

[0047] However, current electronic control surge valve control is not mature, and misidentification will cause the surge valve to open, resulting in insufficient engine power and surging 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 described in detail below with reference to the accompanying drawings.

[0049] Refer to Figure 1 ,Figure 1 A flowchart of a surge valve control method provided by an embodiment of the present application is shown in Figure 1 As shown in the figure, the surge valve control method provided by an embodiment of the present application can include steps 101 to 103, which will be described in detail below.

[0050] 101. Determine whether the engine is in a target working condition, which is a working condition in which the turbocharger is prone to surge.

[0051] Specifically, as mentioned above, the surge of the turbocharger is mainly caused by the rapid closing of the throttle valve when the driver quickly releases the accelerator pedal (such as when shifting gears or decelerating), resulting in a sharp decrease or even cut-off of the air flow to the engine. However, due to the inertia of the turbocharger (large mass and high speed of the turbine and impeller), it cannot stop immediately. The compressor impeller continues to rotate at high speed, continuing to compress the air at its inlet. At this time, the downstream (after the throttle valve) passage is almost blocked, while the compressor continues to pump out air. This results in a sharp rise in pressure at the outlet of the compressor and a sharp decrease in air flow, which causes the surge of the turbocharger.

[0052] To this end, the engine needs to be identified as about to enter this working condition, so as to prepare for the opening of the electric control surge valve in advance. Once the target working condition is identified, the preparation phase of the surge valve opening control is entered. The target working condition can be a load reduction working condition of the engine, i.e. when the load of the engine decreases, and the degree of load reduction reaches a certain standard, it can be determined that the load reduction working condition is entered. Considering that the parameters of the throttle valve and other key parts play a key role in determining the load reduction working condition, the load reduction working condition can be identified according to the obvious characteristics of the load reduction working condition shown by the parameters such as the throttle valve opening rate, the turbocharger boost pressure, and the engine speed.

[0053] Of course, those skilled in the art can also use other related parameters of engine operation to identify the above-mentioned load reduction working condition, which is not limited herein.

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

[0055] Specifically, on the basis of the above steps, when it is judged that the engine is in the load reduction condition, at this time, it does not necessarily lead to the occurrence of the surge phenomenon of the supercharger, for example, the driver is only in the normal slow speed reduction, and will not make the supercharger occur the surge phenomenon. In order to avoid the opening of the surge valve at this time, leading to the decrease of power and the surge phenomenon of the supercharger caused by the imbalance of pressure. Whether to open the surge valve can be determined according to the severity of the change of the operating state of the engine under the target condition and the opening degree of the throttle valve.

[0056] The severity of the change of the operating state under the target condition here can be represented by the load change rate of the engine. The change of the severity under the instantaneous condition and the opening degree of the throttle valve are used together to control whether to open the surge valve.

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

[0058] Specifically, when there is no strong transient condition of the above load reduction in the load reduction condition, at this time, the surge valve can not be opened, but whether there is the air flow that makes the supercharger produce the surge phenomenon is judged according to the current intake flow of the engine and the opening degree of the throttle valve, and then whether to open the surge valve is realized, so as to prevent the control of the occurrence of the surge phenomenon of the supercharger.

[0059] When the driver steps on the accelerator again, the throttle valve is opened again, and the supercharged air is needed, the outlet pressure of the compressor will decrease (because the air flows to the engine). For the mechanical surge valve, the pressure acting on the actuator is reduced to below the set value, and the spring force (or control system) pushes the surge valve to close. All the exhaust energy is used to drive the turbine again, the turbocharger speed rises, and the normal supercharging process is restored. For the electric control surge valve, the surge valve can be controlled to close according to the increase of the opening degree of the throttle valve, so that the turbocharger system enters the normal working state.

[0060] It can be seen from the above that the surge valve control method realizes the comprehensive engine conditions and operating conditions by sequentially judging whether to open the surge valve according to the engine target condition, the strong transient condition and the surge flow, more accurately determines the opening of the surge valve, effectively reduces the abnormal opening of the surge valve, and effectively reduces the power shortage of the engine, improves the stability and reliability of the engine operation.

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

[0062] Whether the engine is in the target condition is determined according to the opening degree change rate of the throttle valve, the supercharging pressure of the supercharger and the speed of the engine.

[0063] Specifically, if the opening rate is less than the opening rate limit value, and the boost pressure is greater than the boost pressure limit value, and the rotation speed is within the rotation speed limit interval, it is determined that the engine is in the target working condition.

[0064] For example, if the opening rate of the throttle is less than the limit value a0 (for example, less than -30% / s), the boost pressure of the supercharger is greater than the limit value b0, and the engine rotation speed is within a certain range (c0, c1), it is identified as a load reduction working condition. When the opening rate is taken as an absolute value, the corresponding opening rate of the throttle is greater than 30% / s, the boost pressure of the supercharger is greater than the limit value b0, and the engine rotation speed is within a certain range (c0, c1), it is identified as a load reduction working condition. Those skilled in the art can select the positive and negative values of the opening rate according to the needs, which is not limited here.

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

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

[0067] Specifically, the load change rate can be represented in the form of a negative number, and the load change rate = (load t2 - load t1) / (t2 - t1), where t2 is later than 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 mistakenly opening the surge valve, the step 103 of determining whether to open the surge valve according to the intake flow of the engine and the opening of the throttle can specifically include:

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

[0070] Specifically, the intake flow is the target intake flow under the target intake pressure calculated according to the demand torque generated by the accelerator opening, and the determination process of the intake flow includes:

[0071] The intake flow is calculated according to the rotation speed of the engine, the intake pressure, the intake pipe volume, the intake temperature, and the intake pipe efficiency.

[0072] Specifically, when calculating the intake flow, the intake flow (g / s) can be calculated according to the speed density method: speed x intake pipe volume x intake pressure ÷ (intake temperature x Rg) x intake pipe efficiency, wherein Rg represents the critical specific volume, which is an important parameter in engine management because it relates to the performance of the engine under different working conditions. By controlling the intake temperature and pressure, the combustion process can be optimized, and the efficiency and performance of the engine can be improved. The parameter can be selected and adjusted according to the different engines in specific applications, which is not limited here.

[0073] The determination process of the surge flow value can specifically include:

[0074] According to the ratio of the pressure before and after the throttle, the surge flow value is determined from the supercharger combined operation curve.

[0075] Specifically, the surge flow value can be obtained from the surge line in the supercharger combined operation curve based on the ratio of the pressure before and after the throttle, i.e. the pressure ratio h, wherein the horizontal coordinate of the surge line is the pressure ratio and the vertical coordinate is the corresponding surge air flow. The pressure before and after the throttle can be measured by the pressure sensor at the corresponding position. When the intake flow g of the engine is less than h1 and the throttle opening a is less than the limit value, the control state Z of the output valve is 1 (indicating that the surge valve is opened), 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-mentioned parameters according to the different engine models, which will not be described here.

[0077] The above introduces a surge valve control method provided by the embodiments of the present application, and the following will introduce a device for executing the above-mentioned surge valve control method.

[0078] Please refer to Figure 3 , Figure 3 The structure diagram of a surge valve control device provided by the embodiments of the present application. As Figure 3 shown, the surge valve control device comprises:

[0079] The target working condition determination module 301 is configured to determine whether the engine is in a target working condition, and the target working condition is a working condition indicating that the supercharger is prone to surge phenomenon.

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

[0081] The second opening control module 303 is configured to determine whether to open the surge valve according to the intake flow 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 in which the target working condition determination module 301 determines whether the engine is in the target working condition includes:

[0083] The target working condition determination module 301 determines whether the engine is in the target working condition according to the opening degree variation rate of the throttle valve, the boost pressure of the supercharger, and the engine speed.

[0084] In a possible implementation, the process in which the target working condition determination module 301 determines whether the engine is in the target working condition according to the opening degree variation rate of the throttle valve, the boost pressure of the supercharger, and the engine speed includes:

[0085] If the opening degree variation rate is less than the opening degree variation rate limit value, the boost pressure is greater than the boost pressure limit value, and the engine speed is in the engine speed limit range, it is determined that the engine is in the target working condition.

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

[0087] If the load variation 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 in which the second opening control module 303 determines whether to open the surge valve according to the intake flow of the engine and the opening degree of the throttle valve includes:

[0089] If the intake 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.

[0090] In a possible implementation, the process in which the second opening control module 303 determines the intake flow includes:

[0091] The intake flow is calculated according to the engine speed, the intake pressure, the intake pipe volume, the intake temperature, and the intake pipe efficiency.

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

[0093] The surge flow value is determined from the supercharger combined operation curve according to the ratio of the pressure before and after the throttle valve.

[0094] An electronic device is also provided in the embodiments of the present application. Referring to Figure 4 An electronic device is also provided in the embodiments of the present application. Referring to Figure 4 The electronic device shown is merely an example and should not bring any limitation to the functions and usage range of the embodiments of the present application.

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

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

[0097] An electronic device is also provided in the embodiments of the present application. Referring to

[0098] The embodiment of the present application further provides a computer readable storage medium, the storage medium carries one or more computer programs, when the one or more computer programs are executed by an electronic device, the electronic device can realize any surge valve control method provided by the embodiment of the present application.

[0099] The embodiment of the present application further provides a vehicle comprising the electronic device described in the above embodiment.

[0100] In addition, it should be noted that the above-described device embodiments are only schematic, and the units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one place, or distributed on multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the embodiment. In addition, the connection between the modules in the device embodiment provided by the present application indicates that there is a communication connection between them, which can be implemented as one or more communication buses or signal lines.

[0101] Through the description of the above embodiments, those skilled in the art can clearly understand that the present application can be realized by means of software and necessary general hardware, and of course can also be realized by special hardware including special integrated circuits, special CPUs, special memories, special components, etc. Generally, functions completed by computer programs can be easily realized by corresponding hardware, and the specific hardware structure for realizing the same function can also be various, such as analog circuit, digital circuit or special circuit, etc. However, for the present application, software program implementation is a better embodiment. Based on this understanding, the technical solutions of the present application can be embodied in the form of software products, which are stored in readable storage media, such as computer floppy disks, U disks, mobile hard disks, ROM, RAM, magnetic or optical disks, etc., including a plurality of instructions for making a computer device (which can be a personal computer, a training device, or a network device, etc.) execute the methods described in various embodiments of the present application.

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

[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 can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transmitted from one website, computer, training device or data center to another website, computer, training device or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be stored by the computer or a data storage device such as a training device, a data center, etc. integrated with one or more available media sets. The available media can be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)), etc.

Claims

1. A surge valve control method characterized by, The method comprises: determining whether the engine is in a target working condition according to a throttle opening rate, a supercharger pressure and a rotational speed of the engine, the target working condition being a working condition in which the supercharger is prone to surging; wherein if the throttle opening rate is less than a throttle opening rate limit value, the supercharger pressure is greater than a supercharger pressure limit value, and the rotational speed is within a rotational speed limit range, it is determined that the engine is in the target working condition; when it is determined that the engine is in the target working condition, determining whether to open the surge valve according to a degree of change in the operating state of the engine in the target working condition and a throttle opening; including: if a load change rate of the engine is less than a load limit value and the throttle opening is less than a first throttle limit value, it is determined to open the surge valve; when it is determined not to open the surge valve, if an intake flow rate of the engine is less than a surge flow rate value and the throttle opening is less than a second throttle limit value, it is determined to open the surge valve; wherein the intake flow rate is a target intake flow rate at a target intake pressure calculated according to a demand torque generated by a throttle opening.

2. The surge valve control method according to claim 1, characterized by, The determination process of the intake flow rate comprises: calculating the intake flow rate according to the rotational speed, the intake pressure, the intake pipe volume, the intake temperature and the intake pipe efficiency of the engine.

3. The surge valve control method according to claim 1, characterized by, The determination process of the surge flow rate value comprises: determining the surge flow rate value from a supercharger combined working curve according to a ratio of the pressure before and after the throttle.

4. A surge valve control device characterized by The method comprises: a target working condition determination module configured to determine whether the engine is in a target working condition according to a throttle opening rate, a supercharger pressure and a rotational speed of the engine, the target working condition being a working condition in which the supercharger is prone to surging; wherein if the throttle opening rate is less than a throttle opening rate limit value, the supercharger pressure is greater than a supercharger pressure limit value, and the rotational speed is within a rotational speed limit range, it is determined that the engine is in the target working condition; a first opening control module configured to, when the target working condition determination module determines that the engine is in the target working condition, determine whether to open the surge valve according to a degree of change in the operating state of the engine in the target working condition and a throttle opening; including: if a load change rate of the engine is less than a load limit value and the throttle opening is less than a first throttle limit value, it is determined to open the surge valve; and a second opening control module configured to, if an intake flow rate of the engine is less than a surge flow rate value and the throttle opening is less than a second throttle limit value, determine to open the surge valve; wherein the intake flow rate is a target intake flow rate at a target intake pressure calculated according to a demand torque generated by a throttle opening.

5. An electronic device, comprising: The electronic device comprises at least one processor and a memory connected to the processor, wherein: the memory is configured to store a computer program; the processor is configured to execute the computer program, so that the electronic device can implement the surge valve control method according to any one of claims 1 to 3.

6. A vehicle characterized by comprising: The electronic device according to claim 5 is provided.

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