Engine exhaust valve control structure and method, related device and engine

Abstract

The invention discloses an engine exhaust valve control structure and method, a related device and an engine, and relates to the field of engines, the engine exhaust valve control structure comprises an exhaust valve connecting body, the exhaust valve connecting body is located between an exhaust valve and a rocker arm of the engine, one end of the exhaust valve connecting body abuts against the rocker arm, and the other end of the exhaust valve connecting body is connected with the exhaust valve. A telescopic mechanism and a control valve are arranged in the exhaust valve connecting body, a first oil duct in the exhaust valve connecting body is communicated with an oil duct in the rocker arm to form a connecting passage between the control valve and the oil pump, and the control valve is used for adjusting the amount of oil entering the telescopic mechanism. The telescopic mechanism deforms under the action of oil mass to drive the exhaust valve connecting body to move, so that the elongation of the exhaust valve in the air cylinder is changed. Opening of the exhaust valve in the compression process is controlled by adjusting the opening degree of the control valve, the air inflow of the acting stroke is reduced, then the temperature of exhaust gas of an engine is increased, the conversion efficiency of an aftertreatment system is guaranteed, and the emission requirement is met.

Description

Technical Field

[0001] The present application relates to the field of engine technology, and in particular to an engine exhaust valve control structure, method, related device and engine. Background Art

[0002] The engine aftertreatment system is a technology for treating nitrogen oxides emitted by the engine. It can selectively reduce nitrogen oxides into nitrogen and water in an oxygen-rich environment using a reducing agent under the action of a catalyst, thereby allowing the engine's emissions to meet the corresponding emission requirements.

[0003] The activity of the post-treatment catalyst needs to reach a certain temperature to achieve the required conversion efficiency. When the exhaust temperature of the engine is low, the catalyst conversion efficiency will be reduced, causing the engine emissions to fail to meet the emission requirements. Summary of the invention

[0004] In view of the above problems, the present application provides an engine exhaust valve control structure, method, related device and engine to achieve the purpose of increasing the temperature of the post-treatment system and ensuring the catalyst conversion efficiency. The specific scheme is as follows:

[0005] A first aspect of the present application provides an engine exhaust valve control structure, comprising: an exhaust valve connector;

[0006] One end of the exhaust valve connecting body is in contact with the rocker arm, and the other end of the exhaust valve connecting body is connected to the exhaust valve;

[0007] A telescopic mechanism and a control valve are arranged inside the exhaust valve connecting body. The first oil passage in the exhaust valve connecting body is connected with the oil passage in the rocker arm, forming a connecting passage between the control valve and the oil pump. The control valve is used to adjust the amount of oil entering the telescopic mechanism. The telescopic mechanism is deformed under the action of the oil amount, driving the exhaust valve connecting body to move, thereby changing the elongation of the exhaust valve in the cylinder.

[0008] In a possible implementation, the exhaust valve connecting body includes: an actuator pin body and a valve adjusting body;

[0009] One end of the valve adjusting body is connected to the exhaust valve, and the telescopic mechanism and the control valve are arranged inside the valve adjusting body;

[0010] One end of the actuator pin body is in contact with the rocker arm, and the other end of the actuator pin body extends from the other end of the valve adjusting body to the inside of the valve adjusting body and is in contact with the control valve;

[0011] The first oil passage in the actuator pin body is connected to the oil passage in the rocker arm to form the connecting passage. The control valve is used to adjust the amount of oil entering the telescopic mechanism. The telescopic mechanism is deformed under the action of the oil amount to drive the valve adjusting body to move, thereby changing the elongation of the exhaust valve in the cylinder.

[0012] In a possible implementation, the telescopic mechanism includes: a preload spring, one end of the preload spring abuts against the control valve, and the other end of the preload spring is arranged on the bottom wall of the valve adjusting body.

[0013] A second aspect of the present application provides an engine exhaust valve control method, which is applied to the engine exhaust valve control structure of the first aspect or any implementation of the first aspect, including:

[0014] Determine the temperature correction strategy based on the environmental parameters of the vehicle's location;

[0015] Determining the opening value of the control valve according to the temperature correction strategy and the operating parameters of the vehicle;

[0016] When the piston moves to the compression top dead center, the control valve is controlled to move to an opening corresponding to the opening value.

[0017] In a possible implementation, determining a temperature correction strategy according to environmental parameters of the location of the vehicle includes:

[0018] Determining abnormal environmental characteristics of the location of the vehicle based on the environmental parameters;

[0019] The temperature correction strategy is determined according to the number of the abnormal environmental features and the priorities of the abnormal environmental features.

[0020] In a possible implementation, determining the temperature correction strategy according to the number of the abnormal environment features and the priority of the abnormal environment features includes:

[0021] If the number of the abnormal environment feature is one, the first temperature correction strategy corresponding to the abnormal environment feature is used as the temperature correction strategy;

[0022] If the number of the abnormal environment features is not less than two, the second temperature correction strategy corresponding to the target abnormal environment feature with the highest priority is used as the temperature correction strategy.

[0023] In a possible implementation, the process of determining the temperature correction strategy includes:

[0024] Determining the operating parameters to be adjusted according to the exhaust temperature after the turbine of the engine;

[0025] Adjusting the control valve opening corresponding to each of the operating parameters to be adjusted to obtain the control valve opening value of each of the operating parameters to be adjusted;

[0026] Each of the operating parameters to be adjusted and the opening value are associated with the environmental parameters to obtain the temperature correction strategy.

[0027] A third aspect of the present application provides an engine exhaust valve control device, comprising:

[0028] A correction strategy determination module, used to determine a temperature correction strategy according to environmental parameters of the vehicle's location;

[0029] a correction opening determination module, configured to determine the opening value of the control valve according to the temperature correction strategy and the operating parameters of the vehicle; and

[0030] The opening adjustment module is used to control the control valve to operate to an opening corresponding to the opening value when the piston operates to the compression top dead center.

[0031] In a possible implementation, the process of the correction strategy determination module determining the temperature correction strategy according to the environmental parameters of the vehicle location includes:

[0032] Determining abnormal environmental characteristics of the location of the vehicle based on the environmental parameters;

[0033] The temperature correction strategy is determined according to the number of the abnormal environmental features and the priorities of the abnormal environmental features.

[0034] In a possible implementation, the process of the correction strategy determination module determining the temperature correction strategy according to the number of the abnormal environment features and the priority of the abnormal environment features includes:

[0035] If the number of the abnormal environment feature is one, the first temperature correction strategy corresponding to the abnormal environment feature is used as the temperature correction strategy;

[0036] If the number of the abnormal environment features is not less than two, the second temperature correction strategy corresponding to the target abnormal environment feature with the highest priority is used as the temperature correction strategy.

[0037] In a possible implementation, the process of determining the temperature correction strategy in the correction strategy determination module includes:

[0038] Determining the operating parameters to be adjusted according to the exhaust temperature after the turbine of the engine;

[0039] Adjusting the control valve opening corresponding to each of the operating parameters to be adjusted to obtain the control valve opening value of each of the operating parameters to be adjusted;

[0040] Each of the operating parameters to be adjusted and the opening value are associated with the environmental parameters to obtain the temperature correction strategy.

[0041] A fourth aspect of the present application provides an electronic device, comprising at least one processor and a memory connected to the processor, wherein:

[0042] The memory is used to store computer programs;

[0043] The processor is used to execute the computer program so that the electronic device can implement the engine exhaust valve control method of the above-mentioned second aspect or any implementation method of the second aspect.

[0044] A fifth aspect of the present application provides an engine, comprising: an engine exhaust valve control structure according to the above-mentioned first aspect or any implementation of the first aspect.

[0045] The sixth aspect of the present application provides a computer program product, including computer-readable instructions. When the computer-readable instructions are executed on an electronic device, the electronic device implements the engine exhaust valve control method of the second aspect or any implementation of the second aspect.

[0046] In a seventh aspect, the present application provides a computer storage medium, which carries one or more computer programs. When the one or more computer programs are executed by an electronic device, the electronic device can implement the engine exhaust valve control method of the second aspect or any implementation of the second aspect.

[0047] By means of the above technical scheme, the exhaust valve control structure of the engine provided by the present application includes: an exhaust valve connector, which is located between the exhaust valve and the rocker arm of the engine, wherein one end of the exhaust valve connector abuts against the rocker arm, and the other end of the exhaust valve connector is connected to the exhaust valve. A telescopic mechanism and a control valve are arranged inside the exhaust valve connector, and the first oil passage in the exhaust valve connector is connected with the oil passage in the rocker arm, forming a connection passage between the control valve and the oil pump, and the control valve is used to adjust the amount of oil entering the telescopic mechanism, and the telescopic mechanism is deformed under the action of the oil amount to drive the exhaust valve connector to move, so that the elongation of the exhaust valve in the cylinder changes. When the exhaust temperature after the turbine of the engine cannot meet the working temperature requirement of the catalyst, the exhaust valve opening in the compression process can be controlled by adjusting the opening of the control valve, reducing the intake amount of the power stroke, thereby increasing the exhaust gas temperature of the engine, ensuring the conversion efficiency of the post-treatment system, and meeting the emission requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. Throughout the accompanying drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and the originals and elements are not necessarily drawn to scale.

[0049] Figure 1 A structural diagram of an engine exhaust valve control structure provided in this application;

[0050] Figure 2 A flow chart of an engine exhaust valve control method provided in this application;

[0051] Figure 3 A flow chart of a temperature correction strategy selection provided for this application;

[0052] Figure 4 A structural diagram of an engine exhaust valve control device provided in this application;

[0053] Figure 5 A structural diagram of an electronic device provided in this application. DETAILED DESCRIPTION

[0054] The following describes the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. The terms used in the implementation method section 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.

[0055] 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.

[0056] 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 need not be 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, which is only to describe the distinction mode adopted by the objects of the same attributes when describing 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.

[0057] The activity of the catalyst used in the vehicle post-treatment system currently requires a certain temperature (generally 250°C) to be above for efficient conversion. When the engine load is low, the temperature of the engine exhaust is low, which will cause the catalyst conversion efficiency to decrease, resulting in emissions that do not meet the requirements.

[0058] In order to solve the above problems, an embodiment of the present application provides an engine exhaust valve control structure. The engine exhaust valve control structure of the embodiment of the present application is described in detail below in conjunction with the accompanying drawings.

[0059] Reference Figure 1 As shown, the engine exhaust valve control structure includes: an exhaust valve connecting body 3, one end of the exhaust valve connecting body 3 is abutted against the rocker arm 2, and the other end of the exhaust valve connecting body 3 is connected to the exhaust valve 4.

[0060] A telescopic mechanism 32 and a control valve 33 are arranged inside the exhaust valve connecting body 3. The first oil channel in the exhaust valve connecting body 3 is connected with the oil channel in the rocker arm 2, forming a connecting passage between the control valve 33 and the oil pump. The control valve 33 is used to adjust the amount of oil entering the telescopic mechanism 32. The telescopic mechanism 32 is deformed under the action of the oil amount, driving the exhaust valve connecting body 3 to move, so that the elongation of the exhaust valve 4 in the cylinder changes.

[0061] Among them, refer to Figure 1 As shown, when the exhaust valve connector 3 is not added, the opening and closing of the exhaust valve 4 during the operation of the engine is achieved by the rotation of the camshaft 1, which drives the rocker arm 2 to rotate through the connecting piece (generally a tappet) between the camshaft 1 and the rocker arm 2, thereby squeezing the exhaust valve 4 downward, so that the exhaust valve 4 extends into the cylinder, and the cylinder and the exhaust pipe are connected, so that the gas in the cylinder is discharged, wherein the exhaust valve 4 is reset with the assistance of components such as a valve spring (not shown in the figure).

[0062] By adding the exhaust valve connector 3 between the rocker arm 2 and the exhaust valve 4, when the engine's turbocharger position is normal (generally at 250°C-450°C), the control valve 33 is in a closed state, the engine oil does not enter the telescopic mechanism 32, and the telescopic mechanism 32 does not deform, and no downward pressure is generated on the exhaust valve connector 3. The exhaust valve connector 3 only plays a connecting role, and transmits the downward force generated by the rocker arm 2 to the exhaust valve 4 for normal exhaust. When the control valve 33 is opened, the engine oil enters the cavity where the telescopic mechanism 32 is located, causing the telescopic mechanism 32 to deform, thereby pushing the exhaust valve 4 to move downward and extend into the cylinder for exhaust. By adjusting the opening of the control valve 33, the length of the exhaust valve 4 extending in the cylinder can be controlled, thereby achieving control of the exhaust volume. When the engine piston reaches the compression top dead center (the engine's compression top dead center refers to the position where the piston reaches the farthest position from the crankshaft center when moving in the cylinder, that is, the highest point on the piston top. At this position, the distance between the piston top and the crankshaft center is the largest, and the volume in the cylinder is the smallest), the control valve 33 is opened and then the exhaust valve 4 is opened, thereby reducing the intake volume of the power stroke. The reduction in air volume causes the combustion state in the cylinder to deteriorate, thereby increasing the exhaust temperature after the engine's turbine, and then increasing the post-processing intake temperature, thereby ensuring the catalyst conversion efficiency.

[0063] In a specific embodiment, in order to improve the tightness of the connection between the rocker arm 2 and the exhaust valve connector 3 and ensure the sealing of the oil passage connection between the two parts, refer to Figure 1 As shown, the exhaust valve connecting body 3 can be composed of two parts: an actuator pin body 31 and a valve adjusting body 34 .

[0064] One end of the valve adjusting body 34 is connected to the exhaust valve 4 , and a telescopic mechanism 32 and a control valve 33 are arranged inside the valve adjusting body 34 .

[0065] One end of the actuator pin body 31 abuts against the rocker arm 2 , and the other end of the actuator pin body 31 extends from the other end of the valve adjusting body 34 to the inside of the valve adjusting body 34 and abuts against the control valve 33 .

[0066] The first oil channel in the actuator pin body 31 is connected to the oil channel in the rocker arm 2 to form a connecting passage. The control valve 33 is used to adjust the amount of oil entering the telescopic mechanism 32. The telescopic mechanism 32 is deformed under the action of the oil amount to drive the valve adjusting body to move, so that the elongation of the exhaust valve 4 in the cylinder changes.

[0067] In order to improve the sealing between the actuator pin body 31 and the rocker arm 2, refer to Figure 1As shown, a groove matching one end of the rocker arm 2 can be provided at the position where the actuator pin body 31 abuts against the rocker arm 2, so that the oil passage inlet provided at the bottom of the groove is connected to the corresponding oil passage outlet on the rocker arm. The other end of the actuator pin body 31 extends into the interior of the valve adjustment body 34 and abuts against the control valve 33, so that the oil passage in the actuator pin body 31 and the inlet of the control valve 33 are aligned. In this way, after the control valve 33 opens to a certain angle, the engine oil is pumped into the space of the valve adjustment body 34 where the telescopic mechanism 32 is provided by the engine oil pump, which squeezes the telescopic mechanism, causing the telescopic mechanism 32 to deform, thereby pushing the valve adjustment body 34 to move downward, driving the exhaust valve 4 to move downward, and controlling the amount of oil entering through the control valve, thereby realizing the control of the amount of extension of the exhaust valve 4 in the cylinder.

[0068] In some specific embodiments, the telescopic mechanism 32 used may include: a preload spring, one end of which is in contact with the control valve 33, and the other end of which is arranged on the bottom wall of the valve adjusting body 34. The preload spring is a spring that pre-applies a certain compression or tension force during installation, and is intended to ensure that the system has the required elastic force or tension in the initial state. In this way, when oil is injected through the control valve, it can be easily deformed, thereby driving the valve adjusting body to move. The preload spring increases the system stiffness, reduces the gap, prolongs the life and stabilizes the performance by pre-applying force.

[0069] It is understandable that those skilled in the art may also adopt other forms of telescopic mechanisms, which are not limited here.

[0070] Reference Figure 2 , is a flow chart of an engine exhaust valve control method provided in an embodiment of the present application, which can be applied to the engine exhaust valve control structure described in the above embodiment. Figure 2 As shown, an engine exhaust valve control method provided by an embodiment of the present application may include steps 201 to 203, and these steps are described in detail below.

[0071] 201. Determine a temperature correction strategy based on environmental parameters of the vehicle's location.

[0072] In a specific embodiment, the environmental parameters of the vehicle's location may include: ambient temperature, ambient air pressure and other parameters, so as to determine the environmental characteristics of the vehicle's current environment. For example, when the ambient pressure is lower than the air pressure threshold, it can be determined that the vehicle is currently in a plateau environment. When the ambient temperature is lower than the temperature threshold (e.g., -10°C), it can be determined that the vehicle is currently in a low temperature environment.

[0073] The temperature correction strategy corresponding to each abnormal environmental feature is different, and the corresponding temperature correction strategy needs to be called according to the determined abnormal environmental feature. The temperature correction strategy includes the engine speed and torque required to adjust the engine's turbine exhaust temperature under the corresponding abnormal environmental feature, as well as the control valve opening corresponding to the speed and torque.

[0074] 202. Determine the opening value of the control valve according to the temperature correction strategy and the operating parameters of the vehicle.

[0075] After determining the temperature correction strategy to be used, when the exhaust temperature after the turbine of the vehicle's engine is less than the adjustment threshold (such as 250°C), according to the vehicle's engine speed and torque parameters, the corresponding control valve opening value is extracted from the temperature correction strategy.

[0076] 203. When the piston moves to the compression top dead center, the control valve is controlled to move to the opening corresponding to the opening value.

[0077] When the piston in the engine's cylinder reaches the compression top dead center, the control valve is controlled to run to the opening corresponding to the opening value, thereby reducing the air intake of the cylinder, increasing the exhaust temperature after the engine's turbine, and then increasing the temperature of the post-treatment, ensuring that the post-treatment catalyst maintains a high conversion efficiency and avoiding the risk of emissions not meeting requirements.

[0078] In some specific embodiments, in order to make the temperature correction more intelligent and more accurate, the above step 201, the process of determining the temperature correction strategy according to the environmental parameters of the vehicle location, may specifically include:

[0079] 2011. Determine the abnormal environmental characteristics of the vehicle's location based on environmental parameters.

[0080] 2012. A temperature correction strategy is determined based on the number of abnormal environmental features and the priority of the abnormal environmental features.

[0081] Specifically, when the number of abnormal environment features is one, the first temperature correction strategy corresponding to the abnormal environment feature is used as the temperature correction strategy.

[0082] When the number of abnormal environment features is not less than two, the second temperature correction strategy corresponding to the target abnormal environment feature with the highest priority is used as the temperature correction strategy.

[0083] Specifically, when there are two abnormal environmental characteristics determined, for example, when the location of the vehicle satisfies both a plateau environment and a low temperature environment, the temperature correction strategy corresponding to the plateau environment is used first because the priority of the plateau environment is higher than that of the low temperature environment.

[0084] As a specific application of the above temperature correction strategy, refer to Figure 3 As shown, when determining the temperature correction strategy, it is first determined whether the ambient pressure is less than P high (i.e., the pressure threshold). When the ambient pressure is less than the pressure threshold, the plateau temperature correction strategy is executed. When it is determined that the current environment is not a plateau environment, it is determined whether it is a low temperature environment based on the ambient temperature. When it is determined that it is a low temperature environment, the low temperature correction strategy is executed. When none of the conditions are met, the normal temperature control strategy can be executed.

[0085] The reason for judging in the above order is that the temperature correction strategy for the plateau environment has taken into account the influence of low temperature. It is understandable that those skilled in the art can adjust the determination process and use order of the above temperature correction strategy as needed, which will not be repeated here.

[0086] In some other specific embodiments, the process of determining the temperature correction strategy includes:

[0087] 301. Determine the operating parameter to be adjusted according to the exhaust temperature after the turbine of the engine.

[0088] 302. Adjust the control valve opening corresponding to each operating parameter to be adjusted to obtain the control valve opening value of each operating parameter to be adjusted.

[0089] 303. Associate each operating parameter to be adjusted, the opening value and the environmental parameter to obtain a temperature correction strategy.

[0090] Specifically, when calibrating at normal temperature and in a plain environment, first measure the exhaust temperature after the turbine of the engine corresponding to each speed and torque, and confirm the intake temperature of the post-processing based on the exhaust temperature after the turbine, and then confirm the engine speed and torque at which the exhaust valve needs to be opened. By adjusting the opening angle of the control valve, the exhaust valve is opened and part of the air is discharged to achieve the intake temperature of the post-processing that meets the thermal management control requirements, and then record the corresponding control valve opening angle and the corresponding engine speed and torque to complete the calibration.

[0091] On this basis, the temperature correction strategies for plateau and low temperature environments are calibrated to determine the torque and speed that need to be adjusted, and then the opening angle of the control valve is adjusted, and then the opening angle, torque and speed are recorded accordingly. The influence of different ambient temperatures is taken into account in the plateau temperature correction.

[0092] An engine exhaust valve control method provided by an embodiment of the present application is introduced above, and a device for executing the above engine exhaust valve control method will be introduced below.

[0093] See also Figure 4 , Figure 4This is a schematic diagram of the structure of an engine exhaust valve control device provided in an embodiment of the present application. Figure 4 As shown, the engine exhaust valve control device comprises:

[0094] The correction strategy determination module 401 is used to determine a temperature correction strategy according to the environmental parameters of the vehicle's location.

[0095] The correction opening determination module 402 is used to determine the opening value of the control valve according to the temperature correction strategy and the operating parameters of the vehicle.

[0096] The opening adjustment module 403 is used to control the control valve to operate to an opening corresponding to the opening value when the piston operates to the compression top dead center.

[0097] In a possible implementation, the process of the correction strategy determination module 401 determining the temperature correction strategy according to the environmental parameters of the vehicle location includes:

[0098] Determining abnormal environmental characteristics of the location of the vehicle based on the environmental parameters;

[0099] The temperature correction strategy is determined according to the number of the abnormal environmental features and the priorities of the abnormal environmental features.

[0100] In a possible implementation, the process of the correction strategy determination module 401 determining the temperature correction strategy according to the number of the abnormal environment features and the priority of the abnormal environment features includes:

[0101] If the number of the abnormal environment feature is one, the first temperature correction strategy corresponding to the abnormal environment feature is used as the temperature correction strategy;

[0102] If the number of the abnormal environment features is not less than two, the second temperature correction strategy corresponding to the target abnormal environment feature with the highest priority is used as the temperature correction strategy.

[0103] In a possible implementation, the process of determining the temperature correction strategy in the correction strategy determination module 401 includes:

[0104] Determining the operating parameters to be adjusted according to the exhaust temperature after the turbine of the engine;

[0105] Adjusting the control valve opening corresponding to each of the operating parameters to be adjusted to obtain the control valve opening value of each of the operating parameters to be adjusted;

[0106] Each of the operating parameters to be adjusted and the opening value are associated with the environmental parameters to obtain the temperature correction strategy.

[0107] The present application also provides an electronic device in an embodiment. Figure 5 As shown, it shows a schematic diagram of the structure of the electronic device suitable for implementing the embodiment of the present application. The electronic device in the embodiment of the present application may include but is not limited to ECU (Electronic Control Unit), VCU (Vehicle Control Unit), MCU (Micro Controller Unit), HCU (Hybrid Control Unit), etc. Figure 5 The electronic device shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0108] like Figure 5 As shown, the electronic device may include a processing device (e.g., a central processing unit, a graphics processing unit, etc.) 501, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 502 or a program loaded from a storage device 508 to a random access memory (RAM) 503. 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 503. The processing device 501, the ROM 502, and the RAM 503 are connected to each other via a bus 504. An input / output (I / O) interface 505 is also connected to the bus 504.

[0109] Typically, the following devices may be connected to the I / O interface 505: an input device 506 including, for example, a touch screen, a touch pad, a keyboard, a mouse, a camera, a microphone, an accelerometer, a gyroscope, etc.; an output device 507 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; a storage device 508 including, for example, a memory card, a hard disk, etc.; and a communication device 509. The communication device 509 may allow the electronic device to communicate with other devices wirelessly or by wire to exchange data. Although Figure 5 An electronic device having various devices is shown, but it should be understood that it is not required to implement or possess all the devices shown. More or fewer devices may be implemented or possessed instead.

[0110] Also provided in an embodiment of the present application is a computer program product including computer-readable instructions. When the computer-readable instructions are executed on an electronic device, the electronic device implements any one of the engine exhaust valve control methods provided in the embodiments of the present application.

[0111] A computer-readable storage medium is also provided in an embodiment of the present application. The storage medium carries one or more computer programs. When one or more computer programs are executed by an electronic device, the electronic device can implement any engine exhaust valve control method provided in the embodiment of the present application.

[0112] An embodiment of the present application also provides an engine, including: the engine exhaust valve control structure described in the above embodiment.

[0113] It should also be noted that the device embodiments described above are merely schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed over multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. In addition, in the drawings of the device embodiments provided by the present application, the connection relationship between the modules indicates that there is a communication connection between them, which may be specifically implemented as one or more communication buses or signal lines.

[0114] Through the description of the above implementation mode, the technicians in the field 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 special hardware including special integrated circuits, special CPUs, special memories, special components, etc. In general, all functions completed by computer programs can be easily implemented by corresponding hardware, and the specific hardware structure used to implement the same function can also be various, such as analog circuits, digital circuits or special circuits. However, for the present application, software program implementation is a better implementation mode in more cases. Based on such an understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a readable storage medium, such as a computer floppy disk, a U disk, a mobile hard disk, a ROM, a RAM, a disk or an optical disk, etc., including a number of instructions to enable a computer device (which can be a personal computer, a training device, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0115] In the above embodiments, all or part of the embodiments may be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments may be implemented in the form of a computer program product.

[0116] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is 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 computer-readable storage medium. For example, the computer instructions may be transmitted from a website site, a computer, a training device, or a data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, training device, or data center. 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, a data center, etc. that includes one or more available media integrations. The available medium may be a magnetic medium, (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state drive (SSD)), etc.

Claims

1. An engine exhaust valve control structure, characterized in that: include: Exhaust valve connector (3); One end of the exhaust valve connecting body (3) is in contact with the rocker arm (2), and the other end of the exhaust valve connecting body (3) is connected to the exhaust valve (4); A telescopic mechanism (32) and a control valve (33) are arranged inside the exhaust valve connecting body (3); a first oil passage in the exhaust valve connecting body (3) is connected to an oil passage in the rocker arm (2), forming a connection passage between the control valve (33) and an oil pump; the control valve (33) is used to adjust the amount of oil entering the telescopic mechanism (32); the telescopic mechanism (32) is deformed under the action of the amount of oil, driving the exhaust valve connecting body (3) to move, thereby changing the amount of extension of the exhaust valve (4) in the cylinder.

2. The engine exhaust valve control structure according to claim 1, characterized in that: The exhaust valve connecting body (3) comprises: an actuator pin body (31) and a valve adjusting body (34); One end of the valve adjusting body (34) is connected to the exhaust valve (4), and the telescopic mechanism (32) and the control valve (33) are arranged inside the valve adjusting body (34); One end of the actuator pin body (31) abuts against the rocker arm (2), and the other end of the actuator pin body (31) extends from the other end of the valve adjusting body (34) to the interior of the valve adjusting body (34) and abuts against the control valve (33); The first oil passage in the actuator pin body (31) is connected to the oil passage in the rocker arm (2) to form the connecting passage. The control valve (33) is used to adjust the amount of oil entering the telescopic mechanism (32). The telescopic mechanism (32) is deformed under the action of the oil amount to drive the valve adjustment body (34) to move, thereby changing the elongation of the exhaust valve (4) in the cylinder.

3. The engine exhaust valve control structure according to claim 2, characterized in that: The telescopic mechanism (32) comprises a preload spring, one end of which abuts against the control valve (33), and the other end of which is arranged on the bottom wall of the valve adjusting body (34).

4. An engine exhaust valve control method, applied to the engine exhaust valve control structure according to any one of claims 1 to 3, characterized in that: include: Determine the temperature correction strategy based on the environmental parameters of the vehicle's location; Determining the opening value of the control valve according to the temperature correction strategy and the operating parameters of the vehicle; When the piston moves to the compression top dead center, the control valve is controlled to move to an opening corresponding to the opening value.

5. The engine exhaust valve control method according to claim 4, characterized in that: Determining the temperature correction strategy according to the environmental parameters of the vehicle location includes: Determining abnormal environmental characteristics of the location of the vehicle based on the environmental parameters; The temperature correction strategy is determined according to the number of the abnormal environmental features and the priorities of the abnormal environmental features.

6. The engine exhaust valve control method according to claim 5, characterized in that: The step of determining the temperature correction strategy according to the number of the abnormal environment features and the priority of the abnormal environment features includes: If the number of the abnormal environment feature is one, the first temperature correction strategy corresponding to the abnormal environment feature is used as the temperature correction strategy; If the number of the abnormal environment features is not less than two, the second temperature correction strategy corresponding to the target abnormal environment feature with the highest priority is used as the temperature correction strategy.

7. The engine exhaust valve control method according to any one of claims 4 to 6, characterized in that: The process of determining the temperature correction strategy includes: Determining the operating parameters to be adjusted according to the exhaust temperature after the turbine of the engine; Adjusting the control valve opening corresponding to each of the operating parameters to be adjusted to obtain the control valve opening value of each of the operating parameters to be adjusted; Each of the operating parameters to be adjusted and the opening value are associated with the environmental parameters to obtain the temperature correction strategy.

8. An engine exhaust valve control device, characterized in that: include: A correction strategy determination module, used to determine a temperature correction strategy according to environmental parameters of the vehicle's location; A correction opening determination module, used to determine the opening value of the control valve according to the temperature correction strategy and the operating parameters of the vehicle; as well as The opening adjustment module is used to control the control valve to operate to an opening corresponding to the opening value when the piston operates to the compression top dead center.

9. An electronic device, characterized in that: The method comprises at least one processor and a memory connected to the processor, wherein: The memory is used to store computer programs; The processor is used to execute the computer program so that the electronic device can implement the engine exhaust valve control method as described in any one of claims 4 to 7.

10. An engine, characterized in that: include: An engine exhaust valve control structure as claimed in any one of claims 1 to 3.

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