Idle speed control method, system, electronic device and readable storage medium

Abstract

The present invention provides an idle speed control method, system, electronic device, and readable storage medium. The idle speed control method includes: when it is determined that the engine is operating in an idle state, first obtaining the initial opening angle of the throttle body based on the engine coolant temperature, and obtaining the initial intake volume of the throttle body based on the initial opening angle; then obtaining the total idle air volume based on the engine system state, and calculating the intake air demand of the bypass air duct based on the total idle air volume and the initial intake air volume of the throttle body; then obtaining angle control information of the bypass valve based on the intake air demand of the bypass air duct; and finally controlling the opening and closing of the bypass valve based on the angle control information of the bypass valve. The idle speed control method provided by the present invention can achieve precise control of the intake timing of the bypass air duct, thereby greatly improving the stability of the engine idle speed.

Description

Technical Field

[0001] The present invention relates to the field of vehicle control, and in particular to an idle speed control method, system, electronic equipment and readable storage medium. Background Art

[0002] Gasoline engine idle refers to the engine operating in neutral. The engine speed at idle is called idle speed. Idle conditions are divided into static idle and dynamic idle. The goal of static idle is to ensure smooth engine operation, normal air-fuel ratio, ignition, and idle air volume, while also ensuring the normal operation of vehicle loads such as the battery and fan. The goal of dynamic idle is to ensure a quick and smooth transition to the target idle speed when various loads are turned on and off. The speed must not fall below the target idle speed when it drops, and must be quickly controlled to the target speed when it rises. Therefore, idle stability is a key indicator of vehicle performance, and the key to achieving a smooth idle speed lies in accurate and stable control of the idle air volume.

[0003] In the existing technology, for electronic throttle body projects, the idle air volume is mainly maintained stably by PID controlling the electronic throttle body valve to keep it at a small opening. However, using an electronic throttle body to control the idle air volume requires a reasonable selection of the electronic throttle body throat diameter. If the electronic throttle body is too small, a stable idle air volume can be obtained, but it often cannot meet the power and torque requirements of the entire vehicle; if the electronic throttle body throat diameter is too large, it is easy to have the problem that the PID adjustment of the electronic throttle body valve plate causes a drastic change in the idle air volume, resulting in unstable idle speed and failure to meet the requirements of stable idle speed control. Motorcycle project customers often choose large-throat electronic throttle bodies to improve the power and torque performance of the entire vehicle, but traditional electronic throttle body idle speed control methods cannot meet the requirements. At the same time, when adjusting the electronic throttle body opening for idle speed control, there will be uneven oil and gas mixing, resulting in occasional misfires at idle speed.

[0004] Therefore, how to provide a new idle speed control method to overcome the above-mentioned defects in the prior art has become one of the technical problems that those skilled in the art need to solve urgently. Summary of the Invention

[0005] The purpose of the present invention is to provide an idle speed control method, system, electronic device and readable storage medium to solve the problem in the prior art that the power and torque performance of the vehicle cannot be met while meeting the requirements of stable idle speed control.

[0006] In order to achieve the above object, the present invention provides an idle speed control method, comprising:

[0007] The idle speed control method is used for an engine system having a bypass air duct structure, wherein a bypass valve is provided in the bypass air duct; the idle speed control method comprises: when it is determined that the engine is operating in an idle state, performing the following steps:

[0008] Obtaining an initial opening angle of the throttle body according to the engine coolant temperature, and obtaining an initial air intake volume of the throttle body according to the initial opening angle;

[0009] Obtaining a total idle air volume, and calculating an intake air demand of the bypass air duct according to the total idle air volume and an initial intake air volume of the throttle body;

[0010] acquiring angle control information of the bypass valve according to the air intake demand of the bypass air duct;

[0011] The bypass valve is controlled to be opened and closed according to the angle control information of the bypass valve.

[0012] Optionally, determining that the engine is operating in an idle state includes:

[0013] If the engine is in an idle state or the vehicle is in an idle control state, it is determined that the engine is operating in an idle state.

[0014] Optionally, the engine is in an idling state, including:

[0015] The idle speed flag is enabled and the engine speed is within a preset idle speed range.

[0016] Optionally, the vehicle is in an idle control state including: when the accelerator pedal opening is less than a preset accelerator pedal opening within a preset time, and / or when the accelerator pedal increase gradient is less than a preset accelerator pedal increase gradient within the preset time.

[0017] Optionally, the calculating the required intake air volume of the bypass air passage according to the total idle air volume and the initial intake air volume of the throttle body includes:

[0018] calculating a difference between the total idle air volume and the initial air intake volume of the throttle body;

[0019] The difference is used as the intake air demand of the bypass air passage.

[0020] Optionally, after calculating the intake air demand of the bypass air duct, the method further includes:

[0021] Calculating the maximum air intake volume of the bypass air duct according to the cross-sectional area of the bypass air duct and the opening angle of the intake valve;

[0022] Determine whether the air intake demand of the bypass air passage is greater than the maximum air intake of the bypass air passage; if so, increase the opening angle of the throttle body; if not, maintain the initial opening angle of the throttle body.

[0023] Optionally, the angle control information of the bypass valve includes crankshaft angles corresponding to the opening and closing moments of the bypass valve;

[0024] The step of obtaining angle control information of the bypass valve according to the intake air demand of the bypass air passage includes:

[0025] Obtaining an engine stroke corresponding to each crankshaft angle interval of the engine crankshaft angle;

[0026] Acquiring the crankshaft angle interval in the intake stroke;

[0027] The crank angles corresponding to the opening and closing moments of the bypass valve are determined according to the intake air demand of the bypass air passage and the crank angle interval in the intake stroke.

[0028] Optionally, controlling the opening or closing of the bypass valve according to the angle control information of the bypass valve includes:

[0029] A clock interrupt is set according to the crankshaft angle corresponding to the moment when the bypass valve is opened or closed. When the crankshaft angle is at the angle at which the bypass valve is opened, the clock interrupt is triggered to drive the bypass valve to open; or when the crankshaft angle is at the angle at which the bypass valve is closed, the clock interrupt is triggered to drive the bypass valve to close.

[0030] In order to achieve the above object, the present invention also provides an idle speed control system, comprising: an initial module, a calculation module, an information module and a control module;

[0031] The initial module is configured to: obtain an initial opening angle of the throttle body according to the engine coolant temperature, and obtain an initial air intake volume of the throttle body according to the initial opening angle;

[0032] The calculation module is configured to: obtain a total idle air volume, and calculate an intake air demand of the bypass air duct according to the total idle air volume and an initial intake air volume of the throttle body;

[0033] The information module is configured to: obtain angle control information of the bypass valve according to the intake demand of the bypass air duct;

[0034] The control module is configured to control the opening or closing of the bypass valve according to the angle control information of the bypass valve.

[0035] In order to achieve the above-mentioned object, the present invention further provides an electronic device, comprising a processor and a memory, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, any of the above-mentioned idle speed control methods is implemented.

[0036] In order to achieve the above object, the present invention further provides a readable storage medium, wherein the readable storage medium stores a computer program, and when the computer program is executed by a processor, any of the above idle speed control methods is implemented.

[0037] Compared with the prior art, the idle speed control method, system, electronic device, and readable storage medium provided by the present invention have the following beneficial effects:

[0038] The idle speed control method provided by the present invention is used for an engine system with a bypass air duct structure, and a bypass valve is provided in the bypass air duct; when the engine is running in an idle state, the idle speed control method first obtains the initial opening angle of the throttle body according to the water temperature of the engine coolant, and obtains the initial intake volume of the throttle body according to the initial opening angle; secondly, the total idle air volume is obtained according to the state of the engine system, and the intake demand of the bypass air duct is calculated according to the total idle air volume and the initial intake volume of the throttle body; then, according to the intake demand of the bypass air duct, the angle control information of the bypass valve is obtained; and according to the angle control information of the bypass valve, the opening and closing of the bypass valve are controlled. Therefore, the idle control method provided by the present invention obtains the intake demand of the bypass air duct through the total idle air volume and the initial intake volume of the throttle body, and obtains the angle control information of the bypass valve (for example, the crankshaft angle corresponding to the opening and closing moments of the bypass valve) according to the intake demand of the bypass air duct, and finally controls the opening and closing of the bypass valve through the angle control information, thereby achieving precise control of the intake timing of the bypass air duct; thus, the idle control method provided by the present invention can achieve precise control of the intake timing of the bypass air duct by precisely controlling the opening and closing of the bypass valve, thereby greatly improving the stability of the engine idle speed; further, through precise control of the bypass valve, the direction of the airflow in the engine cylinder can also be changed, so that the airflow forms a tumble flow in the engine combustion chamber, thereby making the oil and gas mixture more uniform, and thereby enabling the oil and gas to burn stably in the engine combustion chamber, further improving the combustion efficiency.

[0039] Since the system, electronic device and readable storage medium provided by the present invention belong to the same inventive concept as the idle speed control method provided by the present invention, they at least have the same technical effects and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1This is an idle bypass airway diagram provided in Example 1 of the present invention;

[0041] Figure 2 This is a flow chart of the idle speed control method provided in Example 1 of the present invention;

[0042] Figure 3 A schematic diagram of controlling a bypass valve of a four-stroke engine provided in the first embodiment of the present invention;

[0043] Figure 4 This is a structural diagram of an idle speed control system provided in Example 2 of the present invention;

[0044] 100-throttle body, 200-bypass air duct, 300-bypass valve, 400-intake valve, 500-initial module, 600-calculation module, 700-information module, 800-control module. DETAILED DESCRIPTION

[0045] The specific embodiments of the present invention will be described in more detail below with reference to the schematic diagrams. The advantages and features of the present invention will become clearer based on the following description. It should be noted that the drawings are all in very simplified form and are not in exact proportions, and are only used to facilitate and clearly assist in illustrating the purpose of the embodiments of the present invention. It should be understood that the drawings in the specification do not necessarily show the specific structure of the present invention in proportion, and that the illustrative features used to illustrate certain principles of the present invention in the drawings in the specification may also be drawn in a slightly simplified manner. The specific design features of the present invention disclosed herein, including, for example, specific dimensions, directions, positions and shapes, will be determined in part by the specific environment in which they are to be applied and used. In addition, in the embodiments described below, the same figure mark is sometimes used in common between different drawings to represent the same part or a part with the same function, and its repeated description is omitted. In this specification, similar numbers and letters are used to represent similar items, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0046] Example 1

[0047] This embodiment provides an idle speed control method. For details, please refer to the attached Figure 1 and attached Figure 2 ,in, Figure 1 A diagram of an idle bypass air passage 200 is schematically provided; Figure 2 A flowchart of the idle speed control method is schematically provided; Figure 1-Figure 2 It can be seen that the idle speed control method provided in this embodiment is used for an engine system having a bypass air duct 200 structure, and the bypass air duct 200 is provided with a bypass valve 300. When the idle speed control method determines that the engine is operating in the idle state, the following steps are performed:

[0048] S100: Obtaining an initial opening angle of the throttle body 100 according to the engine coolant temperature, and obtaining an initial intake volume of the throttle body 100 according to the initial opening angle;

[0049] S200: Obtaining a total idle air volume according to the engine system state, and calculating an intake air demand of the bypass air passage 200 according to the total idle air volume and an initial intake air volume of the throttle body 100;

[0050] S300: Acquiring angle control information of the bypass valve 300 according to the intake air demand of the bypass air passage 200;

[0051] S400 : Controlling the opening and closing of the bypass valve 300 according to the angle control information of the bypass valve 300 .

[0052] Therefore, the idle speed control method provided by the present invention obtains the intake demand of the bypass air duct 200 through the total idle air volume and the initial intake volume of the throttle body 100, and obtains the angle control information of the bypass valve 300 (for example, the crankshaft angle corresponding to the opening and closing moments of the bypass valve 300) according to the intake demand of the bypass air duct 200, and finally controls the opening and closing of the bypass valve 300 according to the angle control information, thereby achieving precise control of the intake moment of the bypass air duct 200; thus, the idle speed control method provided by the present invention can achieve precise control of the intake moment of the bypass air duct 200 by precisely controlling the opening and closing of the bypass valve 300, thereby greatly improving the stability of the engine idle speed; further, through the precise control of the bypass valve 300, the direction of the airflow in the engine cylinder can be changed, so that the airflow forms a tumble flow in the engine combustion chamber, thereby making the oil and gas mixing more uniform, and thereby enabling the oil and gas to burn stably in the engine combustion chamber, further improving the combustion efficiency.

[0053] Preferably, the determining that the engine is running in an idle state includes: if the engine is in an idle state or the vehicle is in an idle control state, then determining that the engine is running in an idle state. In one preferred embodiment, the engine is in an idle state, including:

[0054] The idle speed flag is enabled and the engine speed is within a preset idle speed range. Thus, whether the engine is in an idle state can be quickly determined by enabling the idle speed flag and the engine speed, thereby quickly controlling the idle speed of the engine.

[0055] Preferably, the vehicle being in the idle control state includes: when the accelerator pedal opening is less than a preset accelerator pedal opening within a preset time, and / or when the accelerator pedal increase gradient is less than a preset accelerator pedal increase gradient within the preset time. Since when the preset acceleration state is either of the above two situations, the vehicle is in a low-throttle operating condition, and when the throttle body 100 is used to control the idle air volume in the low-throttle operating condition, there is also the problem of large fluctuations in the idle air volume in the throttle body 100. Therefore, when the vehicle is in the low-throttle operating condition, the idle control method provided in this embodiment can also avoid the problem of large fluctuations in the idle air volume of the throttle body 100 by accurately controlling the air intake of the bypass air duct 200.

[0056] Preferably, the calculation of the intake air demand of the bypass air passage 200 according to the total idle air volume and the initial intake air volume of the throttle body 100 includes:

[0057] Calculating a difference between the total idle air volume and the initial air intake volume of the throttle body 100;

[0058] The difference is used as the intake air requirement of the bypass air passage 200 .

[0059] Therefore, by calculating the difference between the total idle air volume and the initial intake volume of the throttle body 100, the intake demand of the bypass air passage 200 is obtained, so as to finally realize the on-off control of the bypass valve 300 at different crankshaft angles through the intake demand.

[0060] Preferably, after calculating the intake air demand of the bypass air duct 200, the method further includes:

[0061] Calculating the maximum intake volume of the bypass air passage 200 according to the cross-sectional area of the bypass air passage 200 and the opening angle of the intake valve 400;

[0062] Determine whether the air intake demand of the bypass air passage 200 is greater than the maximum air intake of the bypass air passage 200; if so, increase the opening angle of the throttle body 100; if not, maintain the initial opening angle of the throttle body 100.

[0063] Since the maximum intake volume of the bypass air passage 200 is fixed, when the required intake volume of the bypass air passage 200 is greater than the maximum intake volume of the bypass air passage 200, the opening angle of the throttle body 100 is increased, thereby increasing the intake volume flowing through the throttle body 100 to meet the total idle air volume of the engine, thereby avoiding the problem of engine failure caused by insufficient total idle air volume.

[0064] Preferably, the angle control information of the bypass valve includes the crankshaft angle corresponding to the opening and closing moments of the bypass valve;

[0065] The step of obtaining angle control information of the bypass valve according to the intake air demand of the bypass air passage includes:

[0066] Obtaining an engine stroke corresponding to each crankshaft angle interval of the engine crankshaft angle;

[0067] Acquiring the crankshaft angle interval in the intake stroke;

[0068] The crank angles corresponding to the opening and closing moments of the bypass valve 300 are determined according to the intake air demand of the bypass air passage 200 and the crank angle interval in the intake stroke.

[0069] Since the engine includes four strokes, namely intake, compression, combustion and exhaust, but intake operation is required only during the intake stroke, and the engine can correspond to different crankshaft angle ranges during different strokes, the idle control method provided in this embodiment obtains the crankshaft angle range and intake demand corresponding to the intake stroke, thereby obtaining the crankshaft angle corresponding to the opening and closing moments of the bypass valve 300, so as to achieve precise control of the bypass valve 300.

[0070] Preferably, controlling the opening or closing of the bypass valve 300 based on the angle control information of the bypass valve 300 includes: setting a clock interrupt based on the crankshaft angle corresponding to the moment of opening or closing of the bypass valve 300, triggering the clock interrupt to drive the bypass valve 300 to open when the crankshaft angle is at the angle at which the bypass valve 300 is open; or triggering the clock interrupt to drive the bypass valve 300 to close when the crankshaft angle is at the angle at which the bypass valve 300 is closed. Therefore, the idle speed control method provided by the present invention utilizes the clock interrupt to control the opening and closing of the bypass valve 300, eliminating the need for additional control programs or equipment, thereby reducing idle speed control costs.

[0071] In order to better illustrate the idle speed control method provided by the present invention, a four-stroke engine is used as an example. The four-stroke engine has four strokes: exhaust, intake, compression, and power. The crankshaft angle varies between 0-720 degrees, corresponding to one cycle of the four-stroke engine. Figure 3 , Figure 3 A schematic diagram of the control of the bypass valve of a four-stroke engine is provided. Figure 3It can be seen that when the intake valve 400 opens at an angle between 340° and 500°, the bypass valve 300 opens at an angle between 350° and 470°. Therefore, the total opening angle of the bypass valve 300 corresponding to the crankshaft angle range is 120°. That is, when the crankshaft angle reaches 350°, the clock interrupt is triggered, which drives the bypass valve 300 to open. The bypass valve 300 remains open until the crankshaft angle reaches 470°, at which point the clock interrupt is triggered again, which drives the bypass valve 300 to close. This completes a complete opening and closing cycle of the bypass valve 300.

[0072] Example 2

[0073] This embodiment provides an idle speed control system. Figure 4 , Figure 4 As can be seen, a schematic diagram of the structure of the idle speed control system is provided. Figure 4 It can be seen that the idle speed control system includes: an initial module 500, a calculation module 600, an information module 700 and a control module 800;

[0074] The initial module 500 is configured to: obtain an initial opening angle of the throttle body according to the engine coolant temperature, and obtain an initial intake volume of the throttle body according to the initial opening angle;

[0075] The calculation module 600 is configured to: obtain a total idle air volume, and calculate an intake air demand of the bypass air duct according to the total idle air volume and an initial intake air volume of the throttle body;

[0076] The information module 700 is configured to: obtain angle control information of the bypass valve according to the intake demand of the bypass air passage;

[0077] The control module 800 is configured to control the opening or closing of the bypass valve according to the angle control information of the bypass valve.

[0078] Since the idle speed control system provided by the present invention and the idle speed control method provided by the present invention belong to the same inventive concept, they at least have the same technical effects and will not be described in detail here.

[0079] Example 3

[0080] This embodiment provides an electronic device, including a processor and a memory, wherein the memory stores a computer program, and when the computer program is executed by the processor, the idle speed control method described in any of the above embodiments is implemented.

[0081] Since the electronic device provided by the present invention and the idle speed control method provided by the present invention belong to the same inventive concept, they at least have the same technical effects and will not be described in detail here.

[0082] Example 4

[0083] This embodiment provides a readable storage medium, in which a computer program is stored. When the computer program is executed by a processor, any of the above-mentioned idle speed control methods is implemented.

[0084] The readable storage medium of the embodiment of the present invention can adopt any combination of one or more computer-readable media. The readable medium can be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium can be, for example, but not limited to, a system, device or component of electricity, magnetism, light, electromagnetic, infrared or semiconductor, or any combination thereof. More specific examples (non-exhaustive list) of computer-readable storage media include: an electrical connection with one or more wires, a portable computer hard disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In this article, a computer-readable storage medium can be any tangible medium containing or storing a program, which can be used by an instruction execution system, device or device or used in combination with it.

[0085] A computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, which carries computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transport a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0086] Computer program code for performing the operations of the present invention may be written in one or more programming languages, or a combination thereof, including object-oriented programming languages such as Java, Smalltalk, C++, and conventional procedural programming languages such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., through the Internet using an Internet service provider).

[0087] In addition, the systems and methods disclosed in the embodiments of this document may also be implemented in other ways. The device embodiments described above are merely illustrative. For example, the flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of the devices, methods, and computer program products according to the various embodiments of this document. In this regard, each box in the flowchart or block diagram may represent a module, program, or portion of code, wherein the module, program segment, or portion of code contains one or more executable instructions for implementing a specified logical function, and the module, program segment, or portion of code contains one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the boxes may also occur in an order different from that marked in the accompanying drawings. For example, two consecutive boxes may actually be executed substantially in parallel, or they may sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, as well as combinations of boxes in the block diagram and / or flowchart, may be implemented using a dedicated hardware-based system for performing the specified functions or actions, or may be implemented using a combination of dedicated hardware and computer instructions. In the description of this specification, reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example.

[0088] In summary, the idle speed control method provided by the present invention can achieve precise control of the intake timing of the bypass air duct 200 by precisely controlling the opening and closing of the bypass valve 300, thereby greatly improving the stability of the engine idle speed; further, through precise control of the bypass valve 300, the direction of the airflow in the engine cylinder can be changed, so that the airflow forms a tumble flow in the engine combustion chamber, thereby making the oil and gas mixture more uniform, and thereby enabling the oil and gas to burn stably in the engine combustion chamber, further improving the combustion efficiency.

[0089] Since the electronic device and the readable storage medium provided by the present invention belong to the same inventive concept as the idle speed control method provided by the present invention, they at least have the same technical effects and will not be described in detail here.

[0090] The above description is merely a preferred embodiment of the present invention and does not limit the present invention in any way. Any person skilled in the art who, without departing from the scope of the present invention, makes any equivalent substitution, modification, or other changes to the technical solution and technical content disclosed in the present invention shall be deemed to be within the scope of the present invention and still fall within the scope of protection of the present invention.

Claims

1. An idle speed control method, characterized in that: The idle speed control method is used for an engine system having a bypass air duct structure, wherein a bypass valve is provided in the bypass air duct; the idle speed control method comprises: when it is determined that the engine is operating in an idle state, performing the following steps: Obtaining an initial opening angle of the throttle body according to the engine coolant temperature, and obtaining an initial air intake volume of the throttle body according to the initial opening angle; Obtaining a total idle air volume, and calculating an intake air demand of the bypass air duct according to the total idle air volume and an initial intake air volume of the throttle body; Obtaining angle control information of the bypass valve according to the intake demand of the bypass air passage; the angle control information of the bypass valve includes crankshaft angles corresponding to the opening and closing moments of the bypass valve; controlling the opening and closing of the bypass valve according to the angle control information of the bypass valve; The step of controlling the opening or closing of the bypass valve according to the angle control information of the bypass valve includes: A clock interrupt is set according to the crankshaft angle corresponding to the moment when the bypass valve is opened or closed. When the crankshaft angle is at the angle at which the bypass valve is opened, the clock interrupt is triggered to drive the bypass valve to open; or when the crankshaft angle is at the angle at which the bypass valve is closed, the clock interrupt is triggered to drive the bypass valve to close.

2. The idle speed control method according to claim 1, wherein: Determining that the engine is operating in an idle state includes: If the engine is in an idle state or the vehicle is in an idle control state, it is determined that the engine is operating in an idle state.

3. The idle speed control method according to claim 2, wherein: The engine is in an idling state, comprising: The idle speed flag is enabled and the engine speed is within a preset idle speed range.

4. The idle speed control method according to claim 2, wherein: The vehicle is in the idle control state including: when the accelerator pedal opening is less than a preset accelerator pedal opening within a preset time, and / or when the accelerator pedal increase gradient is less than a preset accelerator pedal increase gradient within the preset time.

5. The idle speed control method according to claim 1, wherein: Calculating the required intake air volume of the bypass air passage according to the total idle air volume and the initial intake air volume of the throttle body includes: calculating a difference between the total idle air volume and the initial air intake volume of the throttle body; The difference is used as the intake air demand of the bypass air passage.

6. The idle speed control method according to claim 1, wherein: After calculating the intake air demand of the bypass air duct, the method further includes: Calculating the maximum air intake volume of the bypass air duct according to the cross-sectional area of the bypass air duct and the opening angle of the intake valve; Determine whether the air intake demand of the bypass air passage is greater than the maximum air intake of the bypass air passage; if so, increase the opening angle of the throttle body; if not, maintain the initial opening angle of the throttle body.

7. The idle speed control method according to claim 1, wherein: The step of obtaining angle control information of the bypass valve according to the intake air demand of the bypass air passage includes: Obtaining an engine stroke corresponding to each crankshaft angle interval of the engine crankshaft angle; Acquiring the crankshaft angle interval in the intake stroke; The crank angles corresponding to the opening and closing moments of the bypass valve are determined according to the intake air demand of the bypass air passage and the crank angle interval in the intake stroke.

8. An idle speed control system, characterized in that: include: Initial module, calculation module, information module and control module; The initial module is configured to: obtain an initial opening angle of the throttle body according to the engine coolant temperature, and obtain an initial air intake volume of the throttle body according to the initial opening angle; The calculation module is configured to: obtain a total idle air volume, and calculate an intake air demand of the bypass air duct according to the total idle air volume and an initial intake air volume of the throttle body; The information module is configured to: obtain angle control information of the bypass valve according to the intake air demand of the bypass air passage; the angle control information of the bypass valve includes the crankshaft angle corresponding to the opening and closing moments of the bypass valve; The control module is configured to: control the opening or closing of the bypass valve according to the angle control information of the bypass valve; The step of controlling the opening or closing of the bypass valve according to the angle control information of the bypass valve includes: A clock interrupt is set according to the crankshaft angle corresponding to the moment when the bypass valve is opened or closed. When the crankshaft angle is at the angle at which the bypass valve is opened, the clock interrupt is triggered to drive the bypass valve to open; or when the crankshaft angle is at the angle at which the bypass valve is closed, the clock interrupt is triggered to drive the bypass valve to close.

9. An electronic device, characterized in that: The method comprises a processor and a memory, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, the idle speed control method according to any one of claims 1 to 7 is implemented.

10. A readable storage medium, characterized in that: The readable storage medium stores a computer program, and when the computer program is executed by a processor, the idle speed control method according to any one of claims 1 to 7 is implemented.

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