A method, device, electronic device and storage medium for judging the switching action of valve lift

Abstract

The present invention discloses a method, apparatus, electronic device and storage medium for judging the switching action of valve lift. The method includes: determining the current rotation angle of the camshaft based on a first acquisition device; when it is determined that the current rotation angle is greater than or equal to a preset angle threshold, determining the extended position of the pin corresponding to the current rotation angle based on a second acquisition device; determining the deviation value between the extended position of the pin and the reference position of the pin corresponding to the current rotation angle; and determining whether the valve lift of the electronic device is successfully switched according to the deviation value. It is possible to detect the rotation angle of the camshaft. When the rotation angle of the camshaft is greater than or equal to the preset angle threshold, measure the extended position of the pin. By comparing the extended position of the pin with the reference position, it is possible to accurately judge whether the valve lift switching is successful, improve the performance of the device, and enhance the user experience.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle control, and particularly to a method, device, electronic device and storage medium for judging the valve lift switching action. Background Art

[0002] With the continuous improvement of the material living standard, the people's demand for vehicle performance is also getting higher and higher. Among them, the performance of variable valve lift switching of vehicles has also attracted the attention of the general public.

[0003] Currently, the method for judging variable valve lift switching is that when the controller needs to switch the valve lift, the position of the pin is obtained respectively when the camshaft rotates to the pin extension section and the lift switching section, and it is determined whether the valve lift switching is successful according to the position of the pin.

[0004] However, when the sliding sleeve thrust mechanism fails, the pin breaks, or the groove or the pin is excessively worn, the electronic control unit (ECU) can only control the telescopic movement of the pin and measure the position of the pin, and cannot infer the position of the sliding sleeve through the position and movement of the pin to judge whether the valve lift switching is successful. Summary of the Invention

[0005] The present invention provides a method, device, electronic device and storage medium for judging the valve lift switching action, so as to accurately judge whether the valve lift is successfully switched.

[0006] According to an aspect of the present invention, there is provided a method for judging the valve lift switching action, the method including:

[0007] Determining the current rotation angle of the camshaft based on a first acquisition device;

[0008] When it is determined that the current rotation angle is greater than or equal to a preset angle threshold, determining the extended position of the pin corresponding to the current rotation angle based on a second acquisition device;

[0009] Determining the deviation value between the extended position of the pin and the reference position of the pin corresponding to the current rotation angle;

[0010] Determining whether the valve lift of the electronic device is successfully switched according to the deviation value.

[0011] Optionally, determining the current rotation angle of the camshaft based on a first acquisition device includes: obtaining the reference angle of the camshaft; determining the rotation angle of the camshaft based on the first acquisition device; and determining the current rotation angle of the camshaft according to the rotation angle and the reference angle.

[0012] Optionally, before determining the deviation value between the extended position of the pin and the reference position of the pin corresponding to the current rotation angle, it further includes: matching the current rotation angle in the correspondence table of the camshaft angle and the pin position, and determining the reference position of the pin corresponding to the current rotation angle according to the matching result.

[0013] Optionally, determining whether the valve lift of the electronic device is successfully switched according to the deviation value includes: when the deviation value is less than or equal to a preset threshold, determining that the valve lift of the electronic device is successfully switched; when the deviation value is greater than the preset threshold, determining that the valve lift of the electronic device is switched failed.

[0014] Optionally, when it is determined that the valve lift of the electronic device is switched failed, it further includes: sending a reminder that the valve lift is switched failed.

[0015] Optionally, after sending the reminder that the valve lift is switched failed, it further includes: determining the number of times of the reminder that the valve lift is switched failed; when the number is greater than the abnormal threshold, determining that the electronic device has a fault, retracting the pin, and sending a fault prompt message.

[0016] Optionally, the first acquisition device includes a camshaft position sensor and / or a crankshaft position sensor; the second acquisition device includes a pin position sensor.

[0017] According to another aspect of the present invention, there is provided a determination device for a valve lift switching action, the device includes:

[0018] An acquisition module, configured to determine the current rotation angle of the camshaft based on the first acquisition device;

[0019] A determination module, configured to determine the extended position of the pin corresponding to the current rotation angle based on the second acquisition device when it is determined that the current rotation angle is greater than or equal to a preset angle threshold;

[0020] A processing module, configured to determine the deviation value between the extended position of the pin and the reference position of the pin corresponding to the current rotation angle;

[0021] An execution module, configured to determine whether the valve lift of the electronic device is successfully switched according to the deviation value.

[0022] According to another aspect of the present invention, there is provided an electronic device, the electronic device includes:

[0023] At least one processor; and a memory communicatively connected to the at least one processor;

[0024] Wherein, the memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the determination method for the valve lift switching action according to any embodiment of the present invention.

[0025] According to another aspect of the present invention, there is provided a computer-readable storage medium storing computer instructions for causing a processor to implement the method for judging the valve lift switching action according to any embodiment of the present invention when executed.

[0026] The technical solution of the embodiment of the present invention determines the current rotation angle of the camshaft based on the first acquisition device; when it is determined that the current rotation angle is greater than or equal to a preset angle threshold, the extension position of the pin corresponding to the current rotation angle is determined based on the second acquisition device; the deviation value between the extension position of the pin and the reference position of the pin corresponding to the current rotation angle is determined; and whether the valve lift of the electronic device is successfully switched is determined according to the deviation value. It can detect the rotation angle of the camshaft in real time. When the rotation angle of the camshaft is greater than or equal to the preset angle threshold, it is determined that the state of the pin is in the pin retraction section, and the pin is not retracted first, and the state of the pin extending is maintained. The sliding sleeve pushes the pin back, and by comparing the extension position of the pin with the reference position, it is determined whether the valve lift is successfully switched. When the difference between the extension position of the pin and the reference position is within the preset range, it is determined that the valve lift switching is successful, so as to accurately judge whether the valve lift switching is successful. This solves the problem that when the sliding sleeve thrust mechanism fails, the pin breaks, the groove or the pin is excessively worn, the ECU can only control the extension and retraction of the pin and measure the position of the pin, and cannot infer the position of the sliding sleeve through the position and movement of the pin to judge whether the valve lift switching is successful.

[0027] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0029] Figure 1 is a schematic structural diagram of a valve lift switching system provided by the present invention;

[0030] Figure 2 is a schematic diagram of the relationship between the camshaft rotation angle and the groove line provided by the present invention;

[0031] Figure 3 is a schematic flowchart of a method for judging a valve lift switching action provided in Embodiment 1 of the present invention;

[0032] Figure 4 It is a schematic flow chart of a method for judging the valve lift switching action provided in the second embodiment of the present invention;

[0033] Figure 5 It is a schematic structural diagram of a device for judging the valve lift switching action provided in the third embodiment of the present invention;

[0034] Figure 6 It is a schematic structural diagram of an electronic device provided in the fourth embodiment of the present invention. Detailed implementation manners

[0035] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0037] Switching the valve lift can be understood as adjusting the size of the valve lift according to the working conditions of the vehicle. For example, when the speed of the vehicle is relatively low, the valve lift is switched to a small valve lift, and when the vehicle speed is relatively high, the valve lift is switched to a large valve lift. The purpose is to reduce vehicle emissions and fuel consumption and improve the performance of the vehicle.

[0038] Figure 1 It is a schematic structural diagram of a valve lift switching system provided by the present invention. As Figure 1 described, the valve lift switching system includes: an electronic controller, a pin, a camshaft, a groove, a sliding sleeve, a first position sensor, and a second position sensor. Figure 1 The arrows in

[0039] Among them, the camshaft can drive the sliding sleeve to move. The groove is arranged on the sliding sleeve. Based on the telescopic situation of the pin and the position of the groove, the valve lift can be switched. The second position sensor is used to detect the extended position of the pin, the first position sensor is used to detect the rotation angle of the camshaft, and the electronic controller is used to control the pin to extend or retract, and determine whether the valve lift is successfully switched according to the data detected by the two position sensors.

[0040] Unfolding the cylindrical surface of the sliding sleeve, the line of the groove relative to the camshaft rotation angle can be obtained. Figure 2 It is a schematic diagram showing the relationship between the camshaft rotation angle and the groove line provided by the present invention. The numbers on the abscissa in the figure represent the rotation angle of the camshaft. As Figure 2 shown, the groove line can be divided into three stages: the pin extension section, the lift switching section, and the pin retraction section.

[0041] Currently, the method for judging valve lift switching is that when the electronic controller receives the valve lift switching instruction, it waits for the camshaft to rotate to the pin extension section; when the camshaft rotates to the pin extension section, it judges whether the pin is in the initial position (the initial position refers to the position where the pin does not extend) according to the signal collected by the second position sensor; if the pin is not in the initial position, it is considered that the valve lift switching is abnormal; if the pin is in the initial position, a pin extension instruction is issued, and the position information of the pin is collected regularly by the second position sensor, and it is judged whether the pin is in the extended position; if the pin is not in the extended position, it is considered that the valve lift switching is abnormal, if the pin is in the extended position, and it is determined through the information collected by the first acquisition device that the groove line is in the pin retraction section, it is considered that the valve lift switching is completed, and a pin retraction instruction is issued.

[0042] However, when the sliding sleeve thrust mechanism fails, the pin breaks, or the groove or the pin is excessively worn, the ECU can only control the telescopic movement of the pin and measure the position of the pin, and cannot infer the position of the sliding sleeve through the position and movement of the pin to judge whether the valve lift switching is successful.

[0043] The present application proposes a method for judging the valve lift switching action, aiming to accurately judge whether the valve lift is successfully switched. The method for judging the valve lift switching action proposed by the present application will be described in detail below with reference to the drawings and embodiments.

[0044] Embodiment 1

[0045] Figure 3FIG. 0 is a schematic flow chart of a method for judging the valve lift switching action provided in Embodiment 1 of the present invention. This embodiment is applicable to situations such as judging whether the valve lift is successfully switched. This method can be executed by the device for judging the valve lift switching action provided in the embodiments of the present invention. The device can be implemented in the form of hardware and / or software. In a specific embodiment, the device can be integrated in an electronic device. The following embodiments will be described by taking the device integrated in the electronic device as an example. Refer to Figure 3 , the method specifically includes the following steps:

[0046] S101. Determine the current rotation angle of the camshaft based on the first acquisition device.

[0047] Among them, the first acquisition device can be understood as a device for detecting the rotation information of the camshaft, including a position sensor, an angle measurer, etc. The current rotation angle of the camshaft can be understood as the rotation degree of the camshaft, which is used to determine the stage where the groove line is located.

[0048] The advantage of such a setting is that the rotation angle of the camshaft can be detected in real time, and the stage where the groove line is located can be judged according to the rotation angle of the camshaft.

[0049] S102. When it is determined that the current rotation angle is greater than or equal to the preset angle threshold, determine the extended position of the pin corresponding to the current rotation angle based on the second acquisition device.

[0050] Among them, the preset angle threshold can be understood as the division angle value of the groove line stage, including the division angle value between the pin extension section and the lift switching section, the division angle value between the lift switching section and the pin retraction section, the division angle value between the pin retraction section and the pin extension section, etc.; the second acquisition device can be understood as a device for detecting the position information of the pin, including a position sensor, a distance sensor, etc. The embodiments of the present invention do not limit this.

[0051] In the embodiments of the present invention, the position change of the pin in the pin retraction section is used to judge whether the valve lift is successfully switched. Therefore, the preset angle threshold can be understood as the division angle value between the lift switching section and the pin retraction section. Combined with Figure 2 To illustrate S102, assume that the preset angle value is 360°. The first acquisition device obtains the rotation angle of the camshaft at regular intervals (which can be set and adjusted according to the system performance). When the obtained rotation angle of the camshaft is greater than or equal to 360°, it can be known that the current stage is in the pin retraction section, and the depression degree of the groove on the sliding sleeve gradually becomes lower, and the groove can push the pin to gradually retract. When the rotation angle of the camshaft is greater than or equal to 360°, when the first acquisition device obtains the current rotation angle of the camshaft at regular intervals, determine the extended position of the pin corresponding to the current rotation angle based on the second acquisition device.

[0052] The advantage of such a setting is that it can accurately determine the relationship between the current rotation angle and the preset angle threshold, and more accurately judge whether the valve lift switching action is successful. When the current rotation angle of the camshaft is greater than or equal to the preset angle threshold, and then based on the second acquisition device to determine the extended position of the pin corresponding to the current rotation angle, the workload of the second acquisition device can be reduced, and the system performance can be improved.

[0053] Further, Figure 2 In, the angle range of the pin extension section is 0° to 180°, the angle range of the lift switching section is 180° to 360°, and the angle range of the pin retraction section is 360° to 460°. However, the angle ranges of each stage are not fixed, and the specific values are related to the selection of the angle reference position and the engine speed, and can be corrected according to the engine speed.

[0054] Exemplarily, the higher the engine speed, the earlier the angle range. For example, at idle speed, the angle range of the pin extension section is 0° to 180°, and the angle range of the pin retraction section is 360° to 460°; when the engine speed is 2000 revolutions per minute, the angle range of the pin extension section is -10° to 170°, and the angle range of the pin retraction section is 350° to 450°.

[0055] Optionally, after the current rotation angle is greater than or equal to the preset angle threshold, the extended position of the pin corresponding to the current rotation angle will be immediately determined based on the second acquisition device, which can reduce the phenomenon of excessive wear of the pin caused by excessive contact between the pin and the groove and the misjudgment caused by excessive wear of the pin.

[0056] S103. Determine the deviation value between the extended position of the pin and the reference position of the pin corresponding to the current rotation angle.

[0057] Among them, the reference position of the pin can be understood as the calculated extended position of the pin corresponding to the current rotation angle. For example, the extended position of the pin corresponding to the current rotation angle under ideal conditions, the extended position of the pin corresponding to the current rotation angle calculated in combination with the pin wear condition, etc. The embodiments of the present invention do not limit this.

[0058] Specifically, the electronic controller stores the corresponding relationship between the camshaft rotation angle and the pin extended position. After determining the current rotation angle of the camshaft, the reference position of the pin corresponding to the current rotation angle can be determined through the corresponding relationship between the camshaft rotation angle and the pin extended position. The deviation value can be understood as the absolute value of the difference between the extended position of the pin and the reference position of the pin, which is used to measure whether the extended position of the pin is normal. The advantage of such a setting is that it can quantify the judgment basis for valve lift switching and determine the completion of the entire switching process according to the size of the deviation value.

[0059] S104. Determine whether the valve lift of the electronic device is successfully switched according to the deviation value.

[0060] Considering that the contact between the groove and the pin will cause wear of the pin, resulting in a difference between the protruding position of the pin and the reference position. Therefore, a monitoring threshold is set in combination with the wear condition of the pin. When the deviation value is less than or equal to the monitoring threshold, it is considered that the protruding position and the reference position are equal, that is, the valve lift is successfully switched. When the deviation value is greater than the monitoring threshold, it is considered that there is a difference between the protruding position and the reference position, and situations such as the failure of the sliding sleeve thrust mechanism, pin fracture, excessive wear of the groove or pin may occur, that is, there is an abnormality in the valve lift switching.

[0061] Specifically, after the current rotation angle is greater than or equal to the preset angle threshold, multiple groups of the current rotation angle and the protruding position of the pin corresponding to the current rotation angle can be determined, and whether the valve lift of the electronic device is successfully switched is determined according to the average value of the deviation values between the protruding positions of the pins and the reference position, improving the accuracy of judgment.

[0062] The advantage of such a setting is that it can quickly and accurately determine whether the valve lift is successfully switched according to the protruding position of the pin and the reference position, improving the judgment efficiency and speed.

[0063] After determining that the valve lift is successfully switched, control the pin to retract, which can reduce the contact time between the pin and the groove and reduce the wear of the pin.

[0064] The technical solution of this embodiment is to determine the current rotation angle of the camshaft based on the first acquisition device; when it is determined that the current rotation angle is greater than or equal to the preset angle threshold, determine the protruding position of the pin corresponding to the current rotation angle based on the second acquisition device; determine the deviation value between the protruding position of the pin and the reference position of the pin corresponding to the current rotation angle; determine whether the valve lift of the electronic device is successfully switched according to the deviation value. The embodiment of the present invention can detect the rotation angle of the camshaft in real time. When the rotation angle of the camshaft is greater than or equal to the preset angle threshold, it is determined that the state of the pin is in the pin retraction section, and the pin is not retracted first, and the pin is kept in the protruding state, and the sliding sleeve pushes the pin back. By comparing the protruding position of the pin and the reference position, it is determined whether the valve lift is successfully switched. When the difference between the protruding position of the pin and the reference position is within the preset range, it is determined that the valve lift is successfully switched, so as to accurately determine whether the valve lift is successfully switched. It solves the problem that when the sliding sleeve thrust mechanism fails, the pin breaks, or the groove or pin is excessively worn, the ECU can only control the expansion and contraction of the pin and measure the position of the pin, and cannot infer the position of the sliding sleeve through the position and movement of the pin to determine whether the valve lift is successfully switched.

[0065] Embodiment Two

[0066] Figure 4FIG. 0 is a schematic flowchart of a method for judging the valve lift switching action provided by the second embodiment of the present invention. This embodiment is applicable to situations such as judging whether the valve lift is successfully switched. This method can be executed by the judging device for the valve lift switching action provided by the embodiment of the present invention. The device can be implemented in the form of hardware and / or software. In a specific embodiment, the device can be integrated in an electronic device. The following embodiments will be described by taking the device integrated in the electronic device as an example. Refer to Figure 4 , the method specifically includes the following steps:

[0067] S201. Obtain the reference angle of the camshaft; determine the rotation angle of the camshaft based on the first acquisition device; and determine the current rotation angle of the camshaft according to the rotation angle and the reference angle.

[0068] There is no absolute measurement standard for the rotation angle of the camshaft. Therefore, a reference angle needs to be set to measure the rotation of the camshaft during the valve lift switching process. Specifically, the reference angle can be understood as the position of the camshaft when the valve lift starts to switch. During the valve lift switching process, the camshaft rotates continuously. The first acquisition device can obtain the position of the camshaft in real time, determine the rotation angle of the camshaft, and determine the current rotation angle of the camshaft according to the difference between the rotation angle of the camshaft and the reference angle.

[0069] Specifically, the first acquisition device includes a camshaft position sensor, a crankshaft position sensor, etc. The camshaft position sensor is used to detect the rotation angle of the camshaft, and the crankshaft position sensor is used to detect the rotation angle of the crankshaft. There is a certain corresponding relationship between the rotation of the camshaft and the rotation of the crankshaft. For example, when the camshaft rotates one circle, the crankshaft rotates two circles. The rotation angle of the camshaft can also be obtained by measuring the rotation angle of the crankshaft.

[0070] S202. When it is determined that the current rotation angle is greater than or equal to the preset angle threshold, determine the extended position of the pin corresponding to the current rotation angle based on the second acquisition device.

[0071] Specifically, the second acquisition device includes a pin position sensor, and the pin position sensor is used to detect the extended position of the pin.

[0072] S203. Determine the deviation value between the extended position of the pin and the reference position of the pin corresponding to the current rotation angle.

[0073] Specifically, before determining the deviation value between the extended position of the pin and the reference position of the pin corresponding to the current rotation angle, it further includes: matching the current rotation angle in the correspondence table of the camshaft angle and the pin position, and determining the reference position of the pin corresponding to the current rotation angle according to the matching result.

[0074] Among them, the correspondence table between the camshaft angle and the pin position can be understood as the extended position of the pin corresponding to the calculated camshaft angle. For example, the extended position of the pin corresponding to the camshaft angle under ideal conditions, the extended position of the pin corresponding to the camshaft angle calculated in combination with the pin wear condition, etc. The embodiments of the present invention do not limit this.

[0075] Exemplarily, after determining the current rotation angle of the camshaft, by looking up the correspondence table between the camshaft angle and the pin position, the pin position corresponding to the current rotation angle in the correspondence table can be obtained, and the found pin position is the reference position of the pin corresponding to the current rotation angle.

[0076] S204. Determine whether the valve lift of the electronic device is successfully switched according to the deviation value.

[0077] Optionally, determining whether the valve lift of the electronic device is successfully switched according to the deviation value includes: when the deviation value is less than or equal to a preset threshold, determining that the valve lift of the electronic device is successfully switched; when the deviation value is greater than the preset threshold, determining that the valve lift of the electronic device is switched fail.

[0078] Among them, the preset threshold can be understood as a standard for measuring whether the deviation value is within the acceptable range of the system. When the deviation value is within the acceptable range of the system, it is considered that the deviation between the extended position of the pin and the reference position is acceptable to the system, that is, the extended position of the pin is correct, and it is determined that the valve lift of the electronic device is successfully switched; when the deviation value is not within the acceptable range of the system, it is considered that the extended position of the pin is unreasonable and there is an abnormality, and it is determined that the valve lift of the electronic device is switched fail.

[0079] When it is determined that the valve lift of the electronic device is switched fail, it further includes: sending a reminder that the valve lift is switched fail.

[0080] Optionally, after sending the reminder that the valve lift is switched fail, it further includes: determining the number of times of the reminder that the valve lift is switched fail; when the number is greater than the abnormal threshold, determining that the electronic device has a fault, retracting the pin, and sending a fault prompt message.

[0081] Among them, the electronic device can be understood as a device including a valve lift switching system, such as an automobile, etc.; the abnormal threshold can be understood as a basis for determining whether the valve lift switching system fails. When the valve lift is continuously switched fail and the number of failures is greater than the abnormal threshold, it is considered that there is a fault in the valve lift switching system of the electronic device and it needs to be repaired.

[0082] In order to more accurately determine whether the electronic device has a fault, when the valve lift is successfully switched, the number of times of the reminder that the valve lift is switched fail will be cleared. Only when the valve lift is continuously switched fail and the number of failures is greater than the abnormal threshold, will it be considered that the electronic device has a fault.

[0083] Specifically, after the valve lift switching failure reminder is issued, the pin remains in the extended state, and the valve lift switching system can continue to execute the next switching task. If the next switching task is successful, the pin retracts. If it fails, the pin continues to be in the extended state until the valve lift switching is successful or it is determined that the electronic device has a fault, and then the control pin retracts.

[0084] The technical solution of this embodiment is to obtain the reference angle of the camshaft; determine the rotation angle of the camshaft based on the first acquisition device; determine the current rotation angle of the camshaft according to the rotation angle and the reference angle; when it is determined that the current rotation angle is greater than or equal to the preset angle threshold, determine the extended position of the pin corresponding to the current rotation angle based on the second acquisition device; determine the deviation value between the extended position of the pin and the reference position of the pin corresponding to the current rotation angle; and determine whether the valve lift of the electronic device is successfully switched according to the deviation value. The embodiment of the present invention can detect the rotation angle of the camshaft in real time, determine the current rotation angle of the camshaft according to the rotation angle of the camshaft and the reference angle of the camshaft. When the current rotation angle of the camshaft is greater than or equal to the preset angle threshold, it is determined that the state of the pin is in the pin retraction section, and the pin is not retracted first, and the extended state of the pin is maintained. The sliding sleeve pushes the pin back, and by comparing the extended position of the pin and the reference position, it is determined whether the valve lift is successfully switched. When the difference between the extended position of the pin and the reference position is within the preset range, it is determined that the valve lift switching is successful, so as to accurately judge whether the valve lift switching is successful. It solves the problem that when the sliding sleeve thrust mechanism fails, the pin breaks, the groove or the pin is excessively worn, the ECU can only control the expansion and contraction of the pin and measure the position of the pin, and cannot infer the position of the sliding sleeve through the position and movement of the pin to judge whether the valve lift switching is successful.

[0085] Embodiment III

[0086] Figure 5 It is a schematic structural diagram of a device for judging the valve lift switching action provided by Embodiment III of the present invention. As Figure 5 shown, the device includes: an acquisition module 301, a determination module 302, a processing module 303, and an execution module 304.

[0087] The acquisition module 301 is configured to determine the current rotation angle of the camshaft based on the first acquisition device.

[0088] The determination module 302 is configured to determine the extended position of the pin corresponding to the current rotation angle based on the second acquisition device when it is determined that the current rotation angle is greater than or equal to the preset angle threshold.

[0089] The processing module 303 is configured to determine the deviation value between the extended position of the pin and the reference position of the pin corresponding to the current rotation angle.

[0090] An execution module 304, configured to determine whether the valve lift of the electronic device is successfully switched according to the deviation value.

[0091] Optionally, an acquisition module 301 is specifically configured to acquire a reference angle of the camshaft; determine a rotation angle of the camshaft based on a first acquisition device; and determine a current rotation angle of the camshaft according to the rotation angle and the reference angle.

[0092] Optionally, a determination module 302 is further configured to match the current rotation angle in a correspondence table between the camshaft angle and the pin position before determining a deviation value between the extended position of the pin and a reference position of the pin corresponding to the current rotation angle, and determine the reference position of the pin corresponding to the current rotation angle according to the matching result.

[0093] Optionally, the execution module 304 is specifically configured to determine that the valve lift of the electronic device is successfully switched when the deviation value is less than or equal to a preset threshold; and determine that the valve lift of the electronic device fails to be switched when the deviation value is greater than the preset threshold.

[0094] Optionally, the device further includes a prompt module, configured to send a reminder that the valve lift switching fails when it is determined that the valve lift of the electronic device fails to be switched.

[0095] Optionally, the prompt module is further configured to determine the number of times of the reminder that the valve lift switching fails after sending the reminder that the valve lift switching fails; when the number is greater than an abnormal threshold, determine that the electronic device has a fault, retract the pin, and send a fault prompt message.

[0096] Optionally, the first acquisition device includes a camshaft position sensor and / or a crankshaft position sensor; the second acquisition device includes a pin position sensor.

[0097] The determination device for the valve lift switching action provided by the embodiment of the present invention can execute the determination method for the valve lift switching action provided by any embodiment of the present invention, and has corresponding functional modules and beneficial effects for executing the method.

[0098] Embodiment Four

[0099] Figure 6This is a schematic structural diagram of an electronic device provided by the fourth embodiment of the present invention. The electronic device 10 is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described herein and / or claimed.

[0100] As Figure 6 shown, the electronic device 10 includes at least one processor 11, and a memory communicatively connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc. The memory stores a computer program executable by the at least one processor. The processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 into the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. The input / output (I / O) interface 15 is also connected to the bus 14.

[0101] Multiple components in the electronic device 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a magnetic disk, an optical disc, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0102] The processor 11 can be various general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of the processor 11 include but are not limited to a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as the method for judging the valve lift switching action.

[0103] In some embodiments, the method for determining the valve lift switching operation can be implemented as a computer program tangibly embodied in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed onto the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the method for determining the valve lift switching operation described above can be performed. Alternatively, in other embodiments, the processor 11 can be configured to perform the method for determining the valve lift switching operation by any other suitable means (e.g., by means of firmware).

[0104] The various embodiments of the systems and techniques described above in this document can be implemented in digital electronic circuitry, integrated circuit systems, field programmable gate arrays (FPGA), application specific integrated circuits (ASIC), application specific standard products (ASSP), systems on a chip (SOC), complex programmable logic devices (CPLD), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include: being implemented in one or more computer programs executable and / or interpretable on a programmable system including at least one programmable processor, which can be a special-purpose or general-purpose programmable processor that receives data and instructions from a storage system, at least one input device, and at least one output device, and transmits the data and instructions to the storage system, the at least one input device, and the at least one output device.

[0105] The computer programs for implementing the methods of the present invention can be written in any combination of one or more programming languages. These computer programs can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The computer programs can be executed entirely on the machine, partially on the machine, as a stand-alone software package partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0106] In the context of the present invention, a computer-readable storage medium can be a tangible medium that can contain or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer-readable storage medium can include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. Alternatively, the computer-readable storage medium can be a machine-readable signal medium. More specific examples of the machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, 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 disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0107] In order to provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or a trackball) by which the user can provide input to the electronic device. Other kinds of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, speech input, or tactile input).

[0108] The systems and techniques described herein can be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer having a graphical user interface or a web browser through which the user can interact with an implementation of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local area network (LAN), wide area network (WAN), blockchain network, and the Internet.

[0109] A computing system may include a client and a server. The client and the server are generally far from each other and usually interact via a communication network. The relationship between the client and the server is created by computer programs running on respective computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or a cloud host, which is a host product in the cloud computing service system, and solves the defects of difficult management and weak business scalability existing in traditional physical hosts and VPS services.

[0110] It should be understood that various forms of processes shown above can be used, steps can be reordered, added or deleted. For example, the steps recited in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and no limitation is made herein.

[0111] The above specific embodiments do not constitute a limitation on the protection scope of the present invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for judging the switching action of valve lift, characterized in that including: determining a current rotation angle of a camshaft based on a first acquisition device; when determining that the current rotation angle is greater than or equal to a preset angle threshold, determining an extended position of a pin corresponding to the current rotation angle based on a second acquisition device; determining a deviation value between the extended position of the pin and a reference position of the pin corresponding to the current rotation angle; determining whether a valve lift of an electronic device is successfully switched according to the deviation value; the determining whether the valve lift of the electronic device is successfully switched according to the deviation value includes: when the deviation value is less than or equal to a preset threshold, determining that the valve lift of the electronic device is successfully switched; when the deviation value is greater than the preset threshold, determining that the valve lift of the electronic device is switched unsuccessfully.

2. The method according to claim 1, wherein the determining a current rotation angle of a camshaft based on a first acquisition device includes: acquiring a reference angle of the camshaft; determining a rotation angle of the camshaft based on the first acquisition device; determining the current rotation angle of the camshaft according to the rotation angle and the reference angle.

3. The method according to claim 1, wherein before determining the deviation value between the extended position of the pin and the reference position of the pin corresponding to the current rotation angle, further including: matching the current rotation angle in a correspondence table between camshaft angles and pin positions, and determining a reference position of the pin corresponding to the current rotation angle according to a matching result.

4. The method according to claim 1, characterized in that when determining that the valve lift of the electronic device is switched unsuccessfully, further including: sending a reminder that the valve lift is switched unsuccessfully.

5. The method according to claim 4, wherein after sending the reminder that the valve lift is switched unsuccessfully, further including: determining the number of times of the reminder that the valve lift is switched unsuccessfully; when the number of times is greater than an abnormal threshold, determining that the electronic device has a fault, retracting the pin, and sending a fault prompt message.

6. The method according to claim 1, wherein the first acquisition device includes a camshaft position sensor and / or a crankshaft position sensor; the second acquisition device includes a pin position sensor.

7. A determination device for valve lift switching operation, characterized in that, including: an acquisition module, configured to determine a current rotation angle of a camshaft based on a first acquisition device; a determination module, configured to, when determining that the current rotation angle is greater than or equal to a preset angle threshold, determine an extended position of a pin corresponding to the current rotation angle based on a second acquisition device; a processing module, configured to determine a deviation value between the extended position of the pin and a reference position of the pin corresponding to the current rotation angle; an execution module, configured to determine whether a valve lift of an electronic device is successfully switched according to the deviation value; the execution module is specifically configured to: when the deviation value is less than or equal to a preset threshold, determine that the valve lift of the electronic device is successfully switched; when the deviation value is greater than the preset threshold, determine that the valve lift of the electronic device is switched unsuccessfully.

8. An electronic device, characterized in that, the electronic device includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein, the memory stores a computer program executable by the at least one processor, and when the computer program is executed by the at least one processor, the at least one processor is enabled to execute the method for judging a valve lift switching action according to any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions for implementing the method for judging the valve lift switching action according to any one of claims 1-6 when executed by a processor.

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