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

Abstract

The application discloses an engine exhaust valve control structure, method, related device and engine, and relates to the field of engines, and comprises: an exhaust valve connecting body located between an exhaust valve and a rocker arm of an engine, wherein one end of the exhaust valve connecting body is in abutment with 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 passage in the exhaust valve connecting body is communicated with an oil passage in the rocker arm, a connecting passage between the control valve and an oil pump is formed, the control valve is used for adjusting the oil amount entering the telescopic mechanism, the telescopic mechanism is deformed under the action of the oil amount to drive the exhaust valve connecting body to move, and the elongation amount of the exhaust valve in a cylinder is changed. The opening of the control valve is adjusted to control the opening of the exhaust valve in the compression process, the intake amount of the working stroke is reduced, and then the exhaust gas temperature of the engine is improved, the conversion efficiency of an aftertreatment system is ensured, and the emission requirement is met.

Description

TECHNICAL FIELD

[0001] The present application relates to the engine technical field, and particularly relates to an engine exhaust valve control structure, method, related device and engine. BACKGROUND

[0002] The aftertreatment system of the engine is a technology for treating nitrogen oxides emitted by the engine, which can use a reducing agent to selectively reduce nitrogen oxides into nitrogen and water under the action of a catalyst in an oxygen-rich environment, so as to make the emissions of the engine meet the corresponding emission requirements.

[0003] The activity of the aftertreatment catalyst needs to reach a certain temperature to achieve the required conversion efficiency, and when the exhaust temperature of the engine is low, the catalyst conversion efficiency is reduced, causing the engine emissions to not meet the emission requirements. SUMMARY

[0004] In view of the above problems, the present application provides an engine exhaust valve control structure, method, related device and engine to improve the temperature of the aftertreatment system and ensure the catalyst conversion efficiency. The specific scheme is as follows:

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

[0006] One end of the exhaust valve connecting body abuts against a rocker arm, and the other end of the exhaust valve connecting body is connected to the exhaust valve;

[0007] The inside of the exhaust valve connecting body is provided with an expansion mechanism and a control valve, a first oil passage in the exhaust valve connecting body is communicated with an oil passage in the rocker arm to form a connecting passage between the control valve and an oil pump, the control valve is used to adjust the amount of oil entering the expansion mechanism, and the expansion mechanism is deformed under the action of the amount of oil to drive the exhaust valve connecting body to move, so that the elongation of the exhaust valve in the cylinder changes.

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

[0009] One end of the valve adjusting body is connected to the exhaust valve, and the inside of the valve adjusting body is provided with the expansion mechanism and the control valve;

[0010] One end of the execution pin body abuts against the rocker arm, and the other end of the execution pin body extends from the other end of the valve adjusting body to the inside of the valve adjusting body and abuts against the control valve;

[0011] The first oil passage in the execution pin body communicates with the oil passage in the rocker arm, constituting the connection passage, and the control valve is used for adjusting the oil amount entering the telescopic mechanism, and the telescopic mechanism is deformed under the action of the oil amount to drive the valve adjusting body to move, so that the extension amount of the exhaust valve in the cylinder changes.

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

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

[0014] According to the environmental parameters of the location where the vehicle is located, a temperature correction strategy is determined;

[0015] According to the temperature correction strategy and the operating parameters of the vehicle, an opening value of the control valve is determined;

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

[0017] In a possible implementation, the temperature correction strategy is determined according to the environmental parameters of the location where the vehicle is located, including:

[0018] According to the environmental parameters, an abnormal environmental feature of the location where the vehicle is located is determined;

[0019] According to the number of the abnormal environmental features and the priority of the abnormal environmental features, the temperature correction strategy is determined.

[0020] In a possible implementation, the temperature correction strategy is determined according to the number of the abnormal environmental features and the priority of the abnormal environmental features, including:

[0021] If the number of the abnormal environmental features is one, a first temperature correction strategy corresponding to the abnormal environmental feature is taken as the temperature correction strategy;

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

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

[0024] According to the turbine after-treatment temperature of the engine, an operating parameter to be adjusted is determined;

[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, the opening value and the environmental parameters are associated 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 is used to determine a temperature correction strategy based on environmental parameters of the vehicle's location;

[0029] a correction opening determination module, configured to determine an 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 one possible implementation, the process of the correction strategy determination module determining the temperature correction strategy based on the environmental parameters of the vehicle location includes:

[0032] Determining abnormal environmental characteristics at 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 environmental feature is one, the first temperature correction strategy corresponding to the abnormal environmental feature is used as the temperature correction strategy;

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

[0037] In one 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] correlate each of the to-be-adjusted operating parameters with the opening value and the environmental parameter to obtain the temperature correction strategy.

[0041] The 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 configured to store a computer program.

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

[0044] The fifth aspect of the present application provides an engine, comprising the engine exhaust valve control structure of the first aspect or any implementation manner of the first aspect.

[0045] The sixth aspect of the present application provides a computer program product, comprising computer readable instructions, when the computer readable instructions are executed on an electronic device, the electronic device can implement the engine exhaust valve control method of the second aspect or any implementation manner of the second aspect.

[0046] The seventh aspect of the present application provides a computer 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 implement the engine exhaust valve control method of the second aspect or any implementation manner of the second aspect.

[0047] By the above technical solution, the engine exhaust valve control structure provided by the present application comprises: an exhaust valve connecting body located between an exhaust valve and a rocker arm of an engine, wherein 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 inside the exhaust valve connecting body. A first oil passage in the exhaust valve connecting body is communicated with an oil passage in the rocker arm, forming a connecting passage between the control valve and an 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 amount of oil to drive the exhaust valve connecting body to move, so that the elongation of the exhaust valve in the cylinder changes. When the exhaust gas temperature after the turbine of the engine cannot meet the working temperature requirement of the catalyst, the opening of the control valve can be adjusted to control the opening of the exhaust valve during the compression process, so as to reduce the intake amount of the working stroke, and then the exhaust gas temperature of the engine is improved, the conversion efficiency of the aftertreatment system is ensured, and the emission requirement is met. BRIEF DESCRIPTION OF DRAWINGS

[0048] The above and other features, advantages, and aspects of embodiments of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. The same or similar components have the same or similar reference numbers regardless of the drawing number. It should be understood that the drawings are schematic and elements in the drawings are not necessarily to scale.

[0049] Figure 1 A structure diagram of an engine exhaust valve control structure provided for the present application;

[0050] Figure 2 A flow chart of an engine exhaust valve control method provided for the present application;

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

[0052] Figure 4 A structure diagram of an engine exhaust valve control device provided for the present application;

[0053] Figure 5 A structure diagram of an electronic device provided for the present application. DETAILED DESCRIPTION

[0054] The embodiments of the present application will be described below in conjunction with the drawings. The terms used in the embodiment part 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 will be described below in conjunction with the drawings. It is known to those skilled in the art that the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems as technology develops and new scenarios appear.

[0056] The terms "first", "second", and the like in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or a chronological sequence. It should be understood that the terms used in this way can be interchanged as appropriate, which is only a distinguishing way used in the description of the embodiments of the present application to describe the objects with the same attributes. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, so that the processes, methods, systems, products or devices containing a series of units do not have to be limited to those units, but can include other units not clearly listed or inherent to these processes, methods, products or devices.

[0057] The activity of the catalyst used in the current vehicle aftertreatment system needs to be above a certain temperature (generally 250°C) to perform 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, and thus the emissions will not meet the requirements.

[0058] To solve the above problems, the engine exhaust valve control structure is provided by the embodiments of the present application. The engine exhaust valve control structure of the embodiments of the present application is described in detail below in combination with the drawings.

[0059] Referring to Figure 1 The engine exhaust valve control structure includes: an exhaust valve connecting body 3, one end of the exhaust valve connecting body 3 abuts against a rocker arm 2, and the other end of the exhaust valve connecting body 3 is connected with an exhaust valve 4.

[0060] The inside of the exhaust valve connecting body 3 is provided with an extension mechanism 32 and a control valve 33, a first oil passage in the exhaust valve connecting body 3 is communicated with an oil passage in the rocker arm 2, a connecting passage between the control valve 33 and an oil pump is formed, the control valve 33 is used for adjusting the amount of oil entering the extension mechanism 32, the extension mechanism 32 is deformed under the action of the amount of oil to drive the exhaust valve connecting body 3 to move, so that the extension amount of the exhaust valve 4 in the cylinder changes.

[0061] Referring to Figure 1 Without the exhaust valve connecting body 3, the opening and closing of the exhaust valve 4 in the engine working process is realized by rotating the camshaft 1, driving the rocker arm 2 to rotate through the connecting member (generally a tappet) between the camshaft 1 and the rocker arm 2, and then pressing the exhaust valve 4 downward, so that the exhaust valve 4 extends into the cylinder, and then the cylinder and the exhaust pipeline are communicated, so that the gas in the cylinder is exhausted, wherein the exhaust valve 4 is reset with the aid of components such as valve springs (not shown in the figure).

[0062] When the engine is in normal post-turbine exhaust position (generally at 250-450℃), the control valve 33 is in closed state, the oil does not enter the telescopic mechanism 32, and the telescopic mechanism 32 does not deform, and does not generate downward pressure on the exhaust valve connecting body 3. The exhaust valve connecting body 3 only plays a connecting role, and transmits the downward force generated by the rocker arm 2 to the exhaust valve 4 to perform normal exhaust. When the control valve 33 is opened, the oil enters the cavity where the telescopic mechanism 32 is located, so that the telescopic mechanism 32 deforms and drives the exhaust valve 4 to move downward to extend into the cylinder to perform exhaust. By adjusting the opening of the control valve 33, the length of the exhaust valve 4 extending into the cylinder can be realized, and the control of the exhaust volume is realized. By opening the control valve 33 when the piston of the engine is at the compression top dead center (the compression top dead center of the engine refers to the position where the piston moves in the cylinder to reach the farthest position from the center of the crankshaft, that is, the highest point of the piston top. At this position, the distance between the piston top and the center of the crankshaft is the largest, and the volume in the cylinder is the smallest), the exhaust valve 4 is opened, and the intake amount of the working stroke is reduced. Due to the reduction of the gas volume, the combustion state in the cylinder is deteriorated, the post-turbine exhaust temperature of the engine is increased, and the intake temperature of the post-treatment is increased, so as to ensure the conversion efficiency of the catalyst.

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

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

[0065] The other end of the execution pin body 31 abuts against the rocker arm 2, and the other end of the execution 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 passage in the execution pin body 31 communicates with the oil passage in the rocker arm 2 to form a connection passage, the control valve 33 is used for adjusting the oil amount entering the telescopic mechanism 32, and the telescopic mechanism 32 deforms under the action of the oil amount to drive the valve adjusting body to move, so that the extension amount of the exhaust valve 4 in the cylinder changes.

[0067] In order to improve the sealing between the execution pin body 31 and the rocker arm 2, referring to the execution pin body 31 can be composed of two parts of the execution pin body 31a and the execution pin body 31b. Figure 1 ​As shown, a recess can be arranged at the position where the execution pin 31 abuts against the rocker arm 2, and the recess is in line with one end of the rocker arm 2. An oil passage inlet arranged at the bottom of the recess is connected with a corresponding oil passage outlet on the rocker arm. The other end of the execution pin 31 extends into the inside of the valve adjusting body 34 and abuts against the control valve 33, so that the oil passage in the execution pin 31 is aligned with the inlet of the control valve 33. Thus, after the control valve 33 is opened to a certain angle, oil is pumped into the space of the valve adjusting body 34 where the telescopic mechanism 32 is arranged by the oil pump, so as to press the telescopic mechanism 32 and make the telescopic mechanism 32 deform, thereby pushing the valve adjusting body 34 to move downward and driving the exhaust valve 4 to move downward. The amount of oil entering is controlled by the control valve, and thus the control of the extension amount of the exhaust valve 4 in the cylinder is realized.

[0068] In some specific embodiments, the telescopic mechanism 32 used can include a pre-tightening 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. The pre-tightening spring is a spring that is pre-compressed or pre-stretched during installation, and is used to ensure that the system has the required elastic force or tension in the initial state. Thus, when oil enters through the control valve, the telescopic mechanism 32 can be easily deformed, thereby pushing the valve adjusting body to move. By pre-applying force, the pre-tightening spring can improve the stiffness of the system, reduce the gap, prolong the service life, and stabilize the performance.

[0069] It can be understood that other forms of telescopic mechanisms can also be used by those skilled in the art, which are not limited herein.

[0070] Reference Figure 2 A flowchart of an engine exhaust valve control method provided by the embodiment of the present application can be applied to the engine exhaust valve control structure described in the above embodiment. As shown in Figure 2 The engine exhaust valve control method provided by the embodiment of the present application can include steps 201 to 203, which will be described in detail below.

[0071] 201. Determine a temperature correction strategy according to an environmental parameter of a location where a vehicle is located.

[0072] In one specific embodiment, the environmental parameter of the location where the vehicle is located can include environmental temperature, environmental air pressure and other parameters, so as to determine the environmental characteristics of the current environment where the vehicle is located. For example, when the environmental pressure is lower than an air pressure threshold, it can be determined that the current environment is a highland environment. When the environmental temperature is lower than a temperature threshold (for example, -10℃), it can be determined that the current environment is a low-temperature environment.

[0073] The temperature correction strategy corresponding to each abnormal environment feature is different, and the corresponding temperature correction strategy needs to be called according to the determined abnormal environment feature, wherein the temperature correction strategy includes the engine speed and torque of the engine that need to be adjusted under the corresponding abnormal environment feature, and the control valve opening degree 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 turbine exhaust temperature of the engine of the vehicle is less than the adjustment threshold (such as 250℃), the corresponding control valve opening value is extracted from the temperature correction strategy according to the engine speed and torque parameters of the vehicle.

[0076] 203. When the piston operates to the compression top dead center, control the control valve to operate to the opening corresponding to the opening value.

[0077] When the piston in the cylinder of the engine operates to the compression top dead center, the control valve is controlled to operate to the opening corresponding to the opening value, thereby reducing the intake amount of the cylinder, improving the turbine exhaust temperature of the engine, and thereby improving the temperature of the aftertreatment, ensuring that the aftertreatment catalyst maintains a high conversion efficiency, and avoiding the risk of not meeting the emission requirements.

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

[0079] 2011. Determine the abnormal environment feature of the location of the vehicle according to the environmental parameters.

[0080] 2012. Determine the temperature correction strategy according to the number of abnormal environment features and the priority of the abnormal environment 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 the number of determined abnormal environment features is two, for example, when the vehicle is located in a highland environment and a low-temperature environment at the same time, since the priority of the highland environment is higher than that of the low-temperature environment, the temperature correction strategy corresponding to the highland environment is used first.

[0084] As a specific application of the above temperature correction strategy, with reference to Figure 3 When determining the temperature correction strategy, it can be first judged whether the ambient pressure is less than P high (i.e. the pressure threshold), and when the ambient pressure is less than the pressure threshold, the highland temperature correction strategy is executed, and when it is determined that the current is not a highland environment, it is further judged whether it is a low-temperature environment according to the ambient temperature, and when it is determined to be a low-temperature environment, the low-temperature correction strategy is executed. When none of the above conditions are met, the normal temperature control strategy can be executed.

[0085] The reason for judging in the above order is that the influence of low temperature has been considered in the temperature correction strategy for highland environment. It can be understood that those skilled in the art can adjust the determination process and the order of use of the above temperature correction strategy according to the needs, which will not be described here.

[0086] In some specific embodiments, the determination process of the above temperature correction strategy comprises:

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

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

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

[0090] Specifically, when calibrating at normal temperature and in plain environment, first measure the turbine exhaust temperature of the engine corresponding to each speed and torque, confirm the intake temperature of the aftertreatment according to the turbine exhaust temperature, 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 to discharge part of the gas volume, so that the intake temperature of the aftertreatment meets the thermal management control requirements, and then the corresponding control valve opening angle and the corresponding engine speed and torque are recorded to complete the calibration.

[0091] On this basis, the temperature correction strategies for highland environment and low-temperature environment are calibrated to determine the torque and speed to be adjusted, and then the opening angle of the control valve is adjusted, and then the opening angle, torque and speed are recorded correspondingly. The influence of different ambient temperatures is considered in the highland temperature correction.

[0092] The above introduces an engine exhaust valve control method provided by the embodiments of the present application, and the following will introduce a device for executing the above engine exhaust valve control method.

[0093] Please refer to Figure 4 , Figure 4A structural schematic diagram of an engine exhaust valve control device is provided in the embodiments of the present application. As shown in Figure 4 The engine exhaust valve control device comprises:

[0094] A correction strategy determination module 401 is configured to determine a temperature correction strategy according to an environmental parameter of a location where a vehicle is located.

[0095] A correction opening determination module 402 is configured to determine an opening value of a control valve according to the temperature correction strategy and an operating parameter of the vehicle.

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

[0097] In a possible implementation, the process in which the correction strategy determination module 401 determines the temperature correction strategy according to the environmental parameter of the location where the vehicle is located comprises:

[0098] determining an abnormal environmental feature of the location where the vehicle is located according to the environmental parameter;

[0099] determining the temperature correction strategy according to a number of the abnormal environmental features and a priority of the abnormal environmental features.

[0100] In a possible implementation, the process in which the correction strategy determination module 401 determines the temperature correction strategy according to the number of the abnormal environmental features and the priority of the abnormal environmental features comprises:

[0101] if the number of the abnormal environmental features is one, determining a first temperature correction strategy corresponding to the abnormal environmental feature as the temperature correction strategy;

[0102] if the number of the abnormal environmental features is not less than two, determining a second temperature correction strategy corresponding to an abnormal environmental feature with the highest priority as the temperature correction strategy.

[0103] In a possible implementation, the process in which the correction strategy determination module 401 determines the temperature correction strategy comprises:

[0104] determining an operating parameter to be adjusted according to a turbine after temperature of an engine;

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

[0106] associating each of the operating parameters to be adjusted with the opening value and an environmental parameter to obtain the temperature correction strategy.

[0107] An electronic device is also provided in the embodiments of the present application. Referring to Figure 5 An electronic device is also provided in the embodiments of the present application. Referring to Figure 5 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.

[0108] As shown in Figure 5 The electronic device can include a processing device (for example, a central processing unit, a graphics processing unit, etc.) 501, which can perform various appropriate actions and processes according to programs stored in a read-only memory (ROM) 502 or loaded from a storage device 508 into a random access memory (RAM) 503. In a state where the electronic device is powered on, the RAM 503 also stores various programs and data required for operation of the electronic device. The processing device 501, the ROM 502, and the RAM 503 are connected to each other through a bus 504. An input / output (I / O) interface 505 is also connected to the bus 504.

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

[0110] An electronic device is also provided in the embodiments of the present application. Referring to

[0111] 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 engine exhaust valve control method provided by the embodiment of the present application.

[0112] The embodiment of the present application further provides an engine, comprising the engine exhaust valve control structure described in the above embodiment.

[0113] 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 device embodiments provided in the present application, the connection relationship between the modules in the drawings indicates that there is a communication connection between them, which can be implemented as one or more communication buses or signal lines.

[0114] Through the description of the above embodiments, those skilled in the art can clearly understand that the present application can be realized by software and necessary general hardware, and of course, it 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 a software product, which is stored in a readable storage medium, such as a computer floppy disk, U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk, etc., including a plurality of instructions to make a computer device (which can be a personal computer, training device, or network device, etc.) execute the methods described in various embodiments of the present application.

[0115] 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.

[0116] 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. An engine exhaust valve control method applied to an engine exhaust valve control structure including: An exhaust valve connecting body (3) is provided, one end of the exhaust valve connecting body (3) abuts against a rocker arm (2), and the other end of the exhaust valve connecting body (3) is connected to an 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 communicated with an oil passage in the rocker arm (2) to form a connecting passage between the control valve (33) and an oil pump, the control valve (33) is used for adjusting the amount of oil entering the telescopic mechanism (32), the telescopic mechanism (32) is deformed under the action of the amount of oil to drive the exhaust valve connecting body (3) to move, so that the elongation of the exhaust valve (4) in the cylinder changes, characterized in that the method comprises: According to the environmental parameters of the location where the vehicle is located, a temperature correction strategy is determined: According to the environmental parameters, the abnormal environmental characteristics of the location where the vehicle is located are determined; According to the number of abnormal environmental characteristics and the priority of the abnormal environmental characteristics, the temperature correction strategy is determined: If the number of abnormal environmental characteristics is one, the first temperature correction strategy corresponding to the abnormal environmental characteristics is taken as the temperature correction strategy; If the number of abnormal environmental characteristics is not less than two, the second temperature correction strategy corresponding to the target abnormal environmental characteristics with the highest priority is taken as the temperature correction strategy; According to the temperature correction strategy and the operating parameters of the vehicle, the opening value of the control valve is determined; When the piston operates to the compression top dead center, the control valve is controlled to operate to the opening corresponding to the opening value.

2. The engine exhaust valve control method according to claim 1, characterized by, The exhaust valve connecting body (3) comprises an execution 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 execution pin body (31) abuts against the rocker arm (2), and the other end of the execution 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); The first oil passage in the execution pin body (31) is communicated with the oil passage in the rocker arm (2) to form the connecting passage, the control valve (33) is used for adjusting the amount of oil entering the telescopic mechanism (32), and the telescopic mechanism (32) is deformed under the action of the amount of oil to drive the valve adjusting body (34) to move, so that the elongation of the exhaust valve (4) in the cylinder changes.

3. The engine exhaust valve control method according to claim 2, characterized by, The telescopic mechanism (32) comprises a pre-tightening spring, one end of the pre-tightening spring abuts against the control valve (33), and the other end of the pre-tightening spring is arranged on the bottom wall of the valve adjusting body (34).

4. The engine exhaust valve control method according to any one of claims 1 to 3, characterized by, The determination process of the temperature correction strategy comprises: According to the turbine after-treatment temperature of the engine, the operating parameters to be adjusted are determined; The opening of the control valve corresponding to each of the operating parameters to be adjusted is adjusted to obtain the opening value of the control valve of each of the operating parameters to be adjusted; Correlate each of the to-be-adjusted operating parameters with the opening degree value and the environmental parameter to obtain the temperature correction strategy.

5. An engine exhaust valve control device characterized by comprising: Comprise: A correction strategy determination module, configured to determine a temperature correction strategy according to an environmental parameter of a location where a vehicle is located, wherein according to the environmental parameter, an abnormal environmental feature of the location where the vehicle is located is determined; According to the number of abnormal environmental features and the priority of the abnormal environmental features, the temperature correction strategy is determined: If the number of abnormal environmental features is one, a first temperature correction strategy corresponding to the abnormal environmental feature is taken as the temperature correction strategy; If the number of abnormal environmental features is not less than two, a second temperature correction strategy corresponding to a target abnormal environmental feature with the highest priority is taken as the temperature correction strategy; A correction opening determination module, configured to determine an opening degree value of a control valve according to the temperature correction strategy and an operating parameter of the vehicle; And An opening adjustment module, configured to control the control valve to operate to an opening degree corresponding to the opening degree value when a piston operates to a compression top dead center.

6. An electronic device, comprising: Comprise at least one processor and a memory connected with the processor, wherein: The memory is used to store a computer program; The processor is used to execute the computer program, so that the electronic device can implement the engine exhaust valve control method as claimed in any one of claims 1 to 4.

7. An engine characterized by, Comprise: The engine exhaust valve control method as claimed in any one of claims 1 to 4 and the electronic device as claimed in claim 6.

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