Clutch pressure dynamic adjustment method, device, apparatus and readable storage medium

Abstract

The clutch pressure dynamic adjustment method, device, equipment and readable storage medium provided by the application, through real-time acquisition of the state information of the engine and the clutch; when the state information meets the trigger condition of the need to adjust the VKP point pressure value of the clutch; in the case of meeting the preset condition, the pressure value of the clutch is collected for a preset number of times, and the average value of the collected pressure values is calculated; when the average value is within the preset pressure value range, the average value is taken as the VKP point pressure value meeting the preset condition. Real-time state data of the engine and the clutch is collected, real-time judgment is made on the adjustment of the VKP point pressure value, and the measurement mode of average value calculation according to the collected data, so that the adjustment result is closer to the real pressure value data, and the accuracy of the pressure value adjustment is improved.

Description

Technical Field

[0001] This invention relates to the field of transmission control technology, and more specifically to a method, apparatus, device, and readable storage medium for dynamic adjustment of clutch pressure. Background Technology

[0002] The VKP (Volumetric-KP) point of a clutch is the point where the clutch friction plates and steel plates truly begin to contact. The pressure at this point is slightly higher than the KP point (the point from when the clutch is fully open until it begins to transmit torque). Especially for wet clutches, the VKP point is where the clutch characteristics change, and adjusting the pressure at this point plays a crucial role in smooth gear shifting and improving overall vehicle performance.

[0003] In existing technologies, the adjustment of VKP point pressure value typically involves analyzing the ramp response after the current pre-charge to adjust the VKP point pressure value for the next pre-charge. This method determines the pressure value of the next VKP point by comparing the clutch target pressure curve and the actual clutch pressure curve. However, this adjustment method can only make a rough estimate of the adjustment value and cannot adjust the VKP point pressure value in the current state with greater accuracy. Furthermore, this adjustment method requires the clutch pressure to change according to a predetermined pattern, which will affect the normal driving conditions of the vehicle and threaten its performance. Summary of the Invention

[0004] To address the problems of low accuracy in dynamic pressure adjustment and impact on normal driving conditions in existing technologies, this invention provides a method, device, equipment, and readable storage medium for dynamic clutch pressure adjustment, which features higher accuracy and closer proximity to the actual pressure value.

[0005] A method for dynamically adjusting clutch pressure according to a specific embodiment of the present invention includes:

[0006] Obtain status information for the engine and clutch;

[0007] Determine whether the status information meets the preset conditions, where the preset conditions are the trigger conditions for adjusting the clutch VKP point pressure value.

[0008] When the status information meets the preset conditions, the pressure value of the clutch is collected a preset number of times;

[0009] When the pressure value collection for the preset number of times is completed, if the current status information still meets the preset conditions, the average value of the collected pressure values ​​is calculated.

[0010] Determine whether the average value is within the preset pressure range;

[0011] When the average value is within the preset pressure value range, the average value is taken as the VKP point pressure value that satisfies the preset condition.

[0012] Furthermore, the method also includes:

[0013] If the pressure value collection is not completed within the preset number of times, and the current status information no longer meets the preset conditions, then the pressure value collection will stop.

[0014] Furthermore, the method also includes:

[0015] When the current state information meets the preset conditions again, the pressure value of the clutch is collected again a preset number of times.

[0016] Further, the status information includes the torque value output by the engine, and the step of collecting the clutch pressure value a preset number of times when the status information meets the preset condition includes:

[0017] If the torque value output by the engine remains within a preset torque value range within a preset time period, the pressure value of the clutch is collected a preset number of times.

[0018] Furthermore, the status information also includes:

[0019] At least one of the following: current gear position information, clutch control status, clutch pressure value, clutch speed difference value, clutch oil temperature value, and engine coolant temperature value;

[0020] The corresponding preset conditions also include at least one of the following: the current gear is in the target gear of forward gear, the clutch is in micro-friction control, the clutch pressure value is within a preset range, the clutch speed difference is within a preset range, the clutch coolant temperature is within a preset range, and the engine coolant temperature is within a preset range.

[0021] A clutch pressure dynamic adjustment device according to a specific embodiment of the present invention includes:

[0022] The status monitoring module is used to acquire status information of the engine and clutch;

[0023] The first judgment module is used to determine whether the status information meets the preset conditions, wherein the preset conditions are the trigger conditions for adjusting the clutch VKP point pressure value.

[0024] The data acquisition module is used to acquire the pressure value of the clutch a preset number of times when the status information meets the preset conditions.

[0025] The calculation module is used to calculate the average value of the collected pressure values ​​when the pressure value collection for the preset number of times is completed, if the current status information still meets the preset conditions.

[0026] The second judgment module is used to determine whether the average value is within the preset pressure value range. When the average value is within the preset pressure value range, the average value is used as the VKP point pressure value that satisfies the preset condition.

[0027] Furthermore, the acquisition module is also used to stop acquiring pressure values ​​if the current status information no longer meets the preset conditions before the pressure value acquisition of the preset number of times is completed.

[0028] Furthermore, the acquisition module is also used to acquire the pressure value of the clutch a preset number of times when the current state information meets the preset condition again.

[0029] Furthermore, the status information includes the torque value output by the engine, and the acquisition module is also used to acquire the pressure value of the clutch a preset number of times if the torque value output by the engine is maintained within a preset torque value range within a preset time period.

[0030] Furthermore, the status information monitored by the status monitoring module includes:

[0031] At least one of the following: current gear position information, clutch control status, clutch pressure value, clutch speed difference value, clutch oil temperature value, and engine coolant temperature value;

[0032] The corresponding preset conditions also include at least one of the following: the current gear is in the target gear of forward gear, the clutch is in micro-friction control, the clutch pressure value is within a preset range, the clutch speed difference is within a preset range, the clutch coolant temperature is within a preset range, and the engine coolant temperature is within a preset range.

[0033] An apparatus according to a specific embodiment of the present invention includes: a memory and a processor;

[0034] The memory is used to store programs;

[0035] The processor is used to execute the program to implement the various steps of the clutch pressure dynamic adjustment method as described above.

[0036] According to a specific embodiment of the present invention, a readable storage medium is provided thereon storing a computer program, which, when executed by a processor, implements the various steps of the clutch pressure dynamic adjustment method as described above.

[0037] The beneficial effects of this invention are as follows: By acquiring real-time status information of the engine and clutch; determining whether the status information meets the triggering conditions for adjusting the clutch VKP point pressure value; under the condition of meeting preset conditions, collecting the clutch pressure value a preset number of times and calculating the average value of the collected pressure values; when the average value is within the preset pressure value range, using the average value as the VKP point pressure value that meets the preset conditions. This achieves a measurement method based on the acquisition of real-time status data of the engine and clutch, real-time judgment of VKP point pressure value adjustment, and calculation of the average value based on the collected data. This makes the adjustment result closer to the actual pressure value data, improves the accuracy of pressure value adjustment, and ensures vehicle performance. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0039] Figure 1 This is a flowchart of a method for dynamically adjusting clutch pressure according to an exemplary embodiment;

[0040] Figure 2 This is another flowchart of a method for dynamically adjusting clutch pressure according to an exemplary embodiment;

[0041] Figure 3 This is a flowchart of dynamic adjustment judgment provided according to an exemplary embodiment;

[0042] Figure 4 This is a schematic diagram of the structure of a clutch pressure dynamic adjustment device according to an exemplary embodiment;

[0043] Figure 5 This is a schematic diagram of the structure of a device provided according to an exemplary embodiment. Detailed Implementation

[0044] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0045] Reference Figure 1As shown, an embodiment of the present invention provides a method for dynamically adjusting clutch pressure, the method specifically including:

[0046] 101. Obtain the status information of the engine and clutch;

[0047] The powertrain of a vehicle mainly consists of an engine and clutches (wet and dry clutches), with gear shifting and engine torque output handled by the clutches in the transmission. The VKP point is the point at which the clutch begins to transmit torque after fully disengaging. This point can be determined by analyzing the corresponding engine and clutch status information, such as the output torque and the pressure value in the clutch.

[0048] 102. Determine whether the status information meets the preset conditions. The preset conditions are the trigger conditions that require adjustment of the clutch VKP point pressure value.

[0049] For different powertrains consisting of different engines and clutches, the trigger conditions for adjusting the VKP point vary. The determination of whether to enter the VKP point adjustment can be made by comparing the real-time acquired status information with the corresponding preset conditions.

[0050] 103. When the status information meets the preset conditions, the clutch pressure value is collected a preset number of times;

[0051] 104. When the pressure value collection for the preset number of times is completed, if the current status information still meets the preset conditions, the average value of the collected pressure values ​​is calculated.

[0052] The pressure value in the clutch can be collected at a custom sampling frequency, such as 2000 times per second. During the sampling process, the current status information needs to meet the preset conditions for adjusting the VKP point pressure value. After the sampling is completed, the average pressure value is calculated.

[0053] 105. Determine whether the average value is within the preset pressure range;

[0054] 106. When the average value is within the preset pressure value range, the average value is taken as the VKP point pressure value that meets the preset conditions.

[0055] Because the pressure value at the VKP point has a corresponding range under preset conditions, the average pressure value must be within the corresponding range before it can be recognized as the pressure value at the VKP point, thus ensuring the rationality of the average pressure value.

[0056] This method, by using the average value within a preset pressure range as the VKP point pressure value that meets the preset conditions, achieves real-time judgment on VKP point pressure value adjustment based on the acquisition of real-time engine and clutch status data, and calculates the average value based on the acquired data. This makes the adjustment result closer to the actual pressure value data and improves the accuracy of pressure value adjustment.

[0057] As a possible implementation of the above embodiments, refer to Figure 2 and Figure 3 As shown, the dynamic adjustment of clutch pressure is a repetitive cycle. If the current state information no longer meets the preset conditions before the preset number of pressure value acquisitions is completed, pressure value acquisition stops, and the corresponding data is cleared. Then, when the current state information meets the preset conditions again, the clutch pressure value is acquired again for the preset number of times. This achieves dynamic acquisition and judgment of pressure values, enhancing the real-time performance of pressure value acquisition.

[0058] Taking the dynamic adjustment of an odd-numbered wet clutch as an example, the system monitors in real time whether the current state information meets the preset conditions for the odd-numbered wet clutch's adaptive operation. Once the preset conditions are met, the number of times the odd-numbered VKP adaptive operation meets the conditions is counted, and the average clutch pressure corresponding to all counts is calculated. If the current state information no longer meets the preset conditions during the data acquisition process, the recorded data is deleted, and the data acquisition and calculation are restarted once the preset conditions are met. Data whose calculated results do not meet the preset pressure value range are discarded, and data acquisition is restarted. The entire process is a continuous loop; the corresponding procedure is triggered as long as the current state information meets the preset conditions.

[0059] In some specific embodiments of the present invention, the state information includes the torque value output by the engine. When the state information meets preset conditions, the clutch pressure value is collected a preset number of times, including:

[0060] If the torque output of the engine remains within a preset torque range for a preset time period, the clutch pressure value will be collected a preset number of times.

[0061] The torque range can be selected based on the characteristics of the clutch, and can be obtained through statistical analysis of data from a large number of vehicle experiments and clutch component experiments. For example, the torque range can be selected as 7-12 Nm. As long as this torque range is met, the dynamic adjustment of the pressure value at the VKP point will be triggered.

[0062] To further optimize this technical solution, in some other specific embodiments of the present invention, the status information further includes:

[0063] At least one of the following: current gear position information, clutch control status, clutch pressure value, clutch speed difference value, clutch oil temperature value, and engine coolant temperature value;

[0064] The corresponding preset conditions also include at least one of the following: the current gear is the target gear in the forward gear, the clutch is under micro-friction control, the clutch pressure value is within the given torque range, the clutch speed difference is within the preset range, the clutch coolant temperature is within the preset range, and the engine coolant temperature is within the preset range.

[0065] For example, preset conditions may include the gear shift lever being in D (drive), the clutch in micro-slip control, the actual gear being a higher gear (such as 5th, 6th, or 7th gear in a 7-speed wet clutch), the engine output torque being stable at around 10 Nm, the speed difference being within the set error range, and the clutch oil temperature and engine coolant temperature being within the normal range (e.g., 60-100 degrees Celsius). Then, the clutch pressure value will be collected and calculated. Adding more characteristics corresponding to the clutch VKP point state allows for more accurate judgment of the trigger conditions for adjusting the VKP point pressure value, resulting in a more accurate and reliable VKP point pressure value.

[0066] It is understood that those skilled in the art can select the specific composition of the preset conditions and the value range of each component according to the actual application, and the present invention does not impose any restrictions on this.

[0067] Based on the same design concept, referencing Figure 4 As shown, embodiments of the present invention also provide a clutch pressure dynamic adjustment device for performing the various steps of the clutch pressure dynamic adjustment method provided in the above embodiments. The clutch pressure dynamic adjustment device may include:

[0068] Status monitoring module 1 is used to acquire status information of the engine and clutch;

[0069] The first judgment module 2 is used to determine whether the status information meets the preset conditions. The preset conditions are the trigger conditions that require adjustment of the clutch VKP point pressure value.

[0070] The acquisition module 3 is used to acquire the clutch pressure value a preset number of times when the status information meets the preset conditions;

[0071] The calculation module 4 is used to calculate the average value of the collected pressure values ​​if the current status information still meets the preset conditions after the pressure value collection is completed for a preset number of times.

[0072] The second judgment module 5 is used to determine whether the average value is within the preset pressure value range. When the average value is within the preset pressure value range, the average value is used as the VKP point pressure value that meets the preset conditions.

[0073] The acquisition module 3 is also used to stop acquiring pressure values ​​if the current status information no longer meets the preset conditions before the preset number of pressure value acquisitions are completed.

[0074] The acquisition module 3 is also used to acquire the clutch pressure value a preset number of times when the current status information meets the preset conditions again.

[0075] Furthermore, the status information includes the torque value output by the engine. The acquisition module 3 is also used to collect the clutch pressure value a preset number of times if the torque value output by the engine is maintained within a preset torque value range within a preset time period.

[0076] The status information monitored by status monitoring module 1 includes:

[0077] At least one of the following: current gear position information, clutch control status, clutch pressure value, clutch speed difference value, clutch oil temperature value, and engine coolant temperature value;

[0078] The corresponding preset conditions also include at least one of the following: the current gear is in the target gear of forward gear, the clutch is in micro-friction control, the clutch pressure value is within a preset range, the clutch speed difference is within a preset range, the clutch coolant temperature is within a preset range, and the engine coolant temperature is within a preset range.

[0079] The clutch pressure dynamic adjustment device and clutch pressure dynamic adjustment method provided in the above embodiments have the same beneficial effects. For the specific implementation process, please refer to the specific embodiments of the clutch pressure dynamic adjustment method. The present invention will not be described in detail here.

[0080] Reference Figure 5 The embodiments of the present invention shown also provide a device, which may include: a memory 6 and a processor 7;

[0081] Memory 6 is used to store programs;

[0082] Processor 7 is used to execute the program to implement the various steps of the clutch pressure dynamic adjustment method as described in the above embodiment.

[0083] Embodiments of the present invention also provide a readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the various steps of the clutch pressure dynamic adjustment method as described in the above embodiments.

[0084] The clutch pressure dynamic adjustment method, device, equipment, and readable storage medium provided in the above embodiments of the present invention, by using the average pressure value of all points within a certain torque range and a certain number of times during stable driving with slight slippage in a specified gear as the VKP dynamic adaptive value, makes the pressure value of the VKP point more accurate and improves stability.

[0085] For the foregoing method embodiments, in order to simplify the description, they are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, because according to this application, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0086] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For apparatus embodiments, since they are basically similar to method embodiments, the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0087] The steps in the methods of the various embodiments of this application can be adjusted, merged, or deleted in order according to actual needs, and the technical features described in each embodiment can be replaced or combined.

[0088] The modules and sub-modules in the various embodiments of the present application's devices and terminals can be merged, divided, and deleted according to actual needs.

[0089] It should be understood that the disclosed terminals, devices, and methods can be implemented in other ways, given the several embodiments provided in this application. For example, the terminal embodiments described above are merely illustrative. For instance, the division of modules or sub-modules is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple sub-modules or modules may be combined or integrated into another module, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or modules, and may be electrical, mechanical, or other forms.

[0090] The modules or submodules described as separate components may or may not be physically separate. The components that constitute a module or submodule may or may not be physical modules or submodules; that is, they may be located in one place or distributed across multiple network modules or submodules. Some or all of the modules or submodules can be selected to achieve the purpose of this embodiment's solution, depending on actual needs.

[0091] Furthermore, the functional modules or sub-modules in the various embodiments of this application can be integrated into one processing module, or each module or sub-module can exist physically separately, or two or more modules or sub-modules can be integrated into one module. The integrated modules or sub-modules described above can be implemented in hardware or in the form of software functional modules or sub-modules.

[0092] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0093] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein can be implemented directly by hardware, a software unit executed by a processor, or a combination of both. The software unit can be located in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.

[0094] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0095] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for dynamically adjusting clutch pressure, characterized in that, include: Acquire the status information of the engine and clutch, which includes the torque value output by the engine, and at least one of the following: current gear information, clutch control status, clutch pressure value, clutch speed difference value, clutch oil temperature value, and engine coolant temperature value. Determine whether the status information meets the preset conditions, where the preset conditions are the trigger conditions for adjusting the clutch VKP point pressure value. The preset conditions include: the torque value output by the engine is maintained within a preset torque value range within a preset time period, and at least one of the following: the current gear is in the target gear of the forward gear, the clutch is under micro-friction control, the clutch pressure value is within a preset range, the clutch speed difference is within a preset range, the clutch coolant temperature is within a preset range, and the engine coolant temperature is within a preset range. When the status information meets the preset conditions, the pressure value of the clutch is collected a preset number of times; When the pressure value collection for the preset number of times is completed, if the current status information still meets the preset conditions, the average value of the collected pressure values ​​is calculated. Determine whether the average value is within the preset pressure range; When the average value is within the preset pressure value range, the average value is taken as the VKP point pressure value that satisfies the preset condition.

2. The method according to claim 1, characterized in that, Also includes: If the pressure value collection is not completed within the preset number of times, and the current status information no longer meets the preset conditions, then the pressure value collection will stop.

3. The method according to claim 2, characterized in that, Also includes: When the current state information meets the preset conditions again, the pressure value of the clutch is collected again a preset number of times.

4. A clutch pressure dynamic adjustment device, characterized in that, include: The status monitoring module is used to acquire the status information of the engine and clutch. The status information includes the torque value output by the engine, as well as at least one of the following: the current gear information, the control status of the clutch, the clutch pressure value, the clutch speed difference value, the clutch oil temperature value, and the engine coolant temperature value. The first judgment module is used to determine whether the status information meets the preset conditions, wherein the preset conditions are the trigger conditions for adjusting the clutch VKP point pressure value. The preset conditions include: the torque value output by the engine is maintained within a preset torque value range within a preset time period, and at least one of the following: the current gear is in the target gear of the forward gear, the clutch is under micro-friction control, the clutch pressure value is within a preset range, the clutch speed difference is within a preset range, the clutch coolant temperature is within a preset range, and the engine coolant temperature is within a preset range. The data acquisition module is used to acquire the pressure value of the clutch a preset number of times when the status information meets the preset conditions. The calculation module is used to calculate the average value of the collected pressure values ​​when the pressure value collection for the preset number of times is completed, if the current status information still meets the preset conditions. The second judgment module is used to determine whether the average value is within the preset pressure value range. When the average value is within the preset pressure value range, the average value is used as the VKP point pressure value that satisfies the preset condition.

5. The apparatus according to claim 4, characterized in that, The acquisition module is also used to stop acquiring pressure values ​​if the current status information no longer meets the preset conditions before the pressure value acquisition of the preset number of times is completed.

6. The apparatus according to claim 5, characterized in that, The acquisition module is also used to acquire the pressure value of the clutch a preset number of times when the current state information meets the preset conditions again.

7. A device, characterized in that, include: Memory and processor; The memory is used to store programs; The processor is used to execute the program to implement each step of the clutch pressure dynamic adjustment method as described in any one of claims 1 to 3.

8. A readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements each step of the clutch pressure dynamic adjustment method as described in any one of claims 1 to 3.

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