Over-charge oil treatment method, device and equipment of automatic transmission and medium

Abstract

The invention relates to an overcharge oil processing method, device and equipment of an automatic transmission and a medium, and the method comprises the steps that in response to the monitoring stage of a state machine, rotating speed change values of an input shaft of the automatic transmission are obtained, and the maximum value is recorded from the rotating speed change values at all moments; if the difference value between the maximum value and the rotating speed change value at the current moment is greater than a first calibration limit value, starting to record a minimum value from the rotating speed change values at all moments; if the difference value between the rotating speed change value at the current moment and the minimum value is greater than a second calibration limit value, updating the maximum value according to the rotating speed change value at each moment until the monitoring stage is ended; according to a difference value between the maximum value and the minimum value, determining an oil overcharge influence coefficient; and under the condition that the oil overcharge influence coefficient meets a preset condition, oil charge self-learning is performed again to generate an oil charge self-learning value. According to the technical scheme, the phenomenon of over-charging oil can be reduced, and the driving experience is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of automatic transmissions, and particularly to an overcharge oil processing method, device, equipment and medium for an automatic transmission. Background Art

[0002] With the gradual popularization and improvement of automatic transmissions, the power performance, smoothness and fuel economy of automobiles have been improved. Some automatic transmissions also have a learning function, which can automatically adjust the shift logic according to the driver's habits and provide a more personalized driving experience.

[0003] Currently, although automatic transmissions have been optimized and improved for many years in terms of shift smoothness, slight jerks may still occur under conditions such as frequently accelerating and decelerating the throttle at low speeds and shifting gears at specific vehicle speed points. Among them, the automatic transmission mainly relies on the hydraulic system. Due to factors such as calibration differences, temperature characteristics of the oil, and hardware wear, overcharge oil phenomena are likely to occur, resulting in a large impact feeling and bringing a bad experience to the driver.

[0004] Therefore, how to effectively judge overcharge oil and make timely corrections after overcharge oil has become an important control strategy. Summary of the Invention

[0005] To solve the above technical problems, the present disclosure provides an overcharge oil processing method, device, equipment and medium for an automatic transmission.

[0006] In a first aspect, an embodiment of the present disclosure provides an overcharge oil processing method for an automatic transmission, including: In response to the state machine being in the monitoring stage, obtaining the rotational speed change value of the input shaft of the automatic transmission, and recording the maximum value from the rotational speed change values at each moment; If the difference between the maximum value and the rotational speed change value at the current moment is greater than the first calibration limit, start recording the minimum value from the rotational speed change values at each moment; If the difference between the rotational speed change value at the current moment and the minimum value is greater than the second calibration limit, update the maximum value according to the rotational speed change values at each moment until the monitoring stage ends; Determining an overcharge oil influence coefficient according to the difference between the maximum value and the minimum value; When the overcharge oil influence coefficient meets a preset condition, re-performing oil filling self-learning to generate an oil filling self-learning value.

[0007] In a second aspect, an embodiment of the present disclosure provides an overcharge oil processing device for an automatic transmission, including: The first monitoring module is configured to, in response to the state machine being in the monitoring stage, obtain the rotational speed change value of the input shaft of the automatic transmission, and record the maximum value from the rotational speed change values at each moment; The second monitoring module is configured to, if the difference between the maximum value and the rotational speed change value at the current moment is greater than the first calibration limit, start to record the minimum value from the rotational speed change values at each moment; The third monitoring module is configured to, if the difference between the rotational speed change value at the current moment and the minimum value is greater than the second calibration limit, update the maximum value according to the rotational speed change values at each moment until the monitoring stage ends; The determination module is configured to determine the overcharge oil influence coefficient according to the difference between the maximum value and the minimum value; The update module is configured to, when the overcharge oil influence coefficient meets the preset condition, re - perform the oil filling self - learning to generate an oil filling self - learning value.

[0008] In a third aspect, an embodiment of the present disclosure provides an electronic device, including: a processor; a memory for storing executable instructions executable by the processor; the processor is configured to read the executable instructions from the memory and execute the instructions to implement the overcharge oil processing method of the automatic transmission described in the first aspect above.

[0009] In a fourth aspect, an embodiment of the present disclosure provides a computer - readable storage medium, where the storage medium stores a computer program, and when the computer program is executed by a processor, it implements the overcharge oil processing method of the automatic transmission described in the first aspect above.

[0010] The technical solution provided by the embodiment of the present disclosure has the following advantages compared with the prior art: In response to the state machine being in the monitoring stage, obtain the rotational speed change value of the input shaft of the automatic transmission, and record the maximum value from the rotational speed change values at each moment. Furthermore, if the difference between the maximum value and the rotational speed change value at the current moment is greater than the first calibration limit, start to record the minimum value from the rotational speed change values at each moment. Further, if the difference between the rotational speed change value at the current moment and the minimum value is greater than the second calibration limit, update the maximum value according to the rotational speed change values at each moment until the monitoring stage ends, and determine the overcharge oil influence coefficient according to the difference between the maximum value and the minimum value. Thus, by monitoring the rotational speed change value in the above order during the monitoring stage, reasonably judge whether there is an overcharge oil phenomenon and determine the degree to which the overcharge oil affects driving, and there is no need to monitor the actual oil pressure at all times, reducing the number of sensors. And when the overcharge oil influence coefficient meets the preset condition, re - perform the oil filling self - learning to generate an oil filling self - learning value, and use the oil filling self - learning to weaken the impact caused by overcharge oil due to hardware attenuation, calibration differentiation, environmental change, etc., thereby reducing the occurrence of subsequent overcharge oil phenomena and improving the driving experience. Description of the Drawings

[0011] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure.

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0013] Figure 1 It is a schematic flowchart of a method for processing overfilled oil of an automatic transmission provided by an embodiment of the present disclosure; Figure 2 It is a schematic flowchart of another method for processing overfilled oil of an automatic transmission provided by an embodiment of the present disclosure; Figure 3 It is a schematic flowchart of another method for processing overfilled oil of an automatic transmission provided by an embodiment of the present disclosure; Figure 4 It is a schematic structural diagram of a device for processing overfilled oil of an automatic transmission provided by an embodiment of the present disclosure. Detailed Embodiments

[0014] In order to be able to more clearly understand the above-mentioned objects, features, and advantages of the present disclosure, the following will further describe the solutions of the present disclosure. It should be noted that, without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other.

[0015] Many specific details are set forth in the following description in order to fully understand the present disclosure, but the present disclosure can also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only a part of the embodiments of the present disclosure, rather than all the embodiments.

[0016] Figure 1 It is a schematic flowchart of a method for processing overfilled oil of an automatic transmission provided by an embodiment of the present disclosure. The method provided by the embodiment of the present disclosure can be executed by a device for processing overfilled oil of an automatic transmission. This device can be implemented by software and / or hardware and can be integrated on any electronic device with computing capabilities.

[0017] As Figure 1 shown, the method for processing overfilled oil of an automatic transmission provided by the embodiment of the present disclosure may include: Step 101, in response to the state machine being in the monitoring stage, obtain the rotational speed change value of the input shaft of the automatic transmission, and record the maximum value from the rotational speed change values at each moment.

[0018] The method of the embodiments of the present disclosure is applied to an automatic transmission, and by performing overfill oil judgment and fill oil self-learning during driving, the occurrence of overfill oil phenomenon is reduced.

[0019] In this embodiment, monitoring and judgment are performed in the form of a state machine. The states of the state machine include a default stage and a monitoring stage. The state machine initially is in the default stage, and when conditions are met, the state of the state machine switches from the default stage to the monitoring stage. When the state machine is in the monitoring stage, the change value of the rotational speed of the input shaft of the automatic transmission is monitored. Among them, the change value of the rotational speed can be determined according to the difference between the current rotational speed and the rotational speed in the previous cycle.

[0020] As an example, the conditions for the state machine to enter the monitoring stage include: the function total enable switch is set to 1, the gear enable switch is set to 1, the oil temperature of the automatic transmission is within a specified temperature range, the state of the torque converter is within a preset range, and the timing duration corresponding to the currently closing (On Coming, OC) clutch for this shift exceeds a first preset duration. The specified temperature range is a reasonable temperature range set in advance, and the preset range represents the allowable range of the state of the torque converter. In this example, the currently closing clutch for this shift is timed from the start of oil filling to the end of the torque exchange stage. For example, a timer is set for timing. The timer starts timing when the OC clutch starts to fill oil and ends timing when the torque exchange is completed.

[0021] In this embodiment, in response to the state machine being in the monitoring stage, the change value of the rotational speed of the input shaft of the automatic transmission at each moment is obtained, and the maximum value is recorded from the change values of the rotational speeds at each moment. This process can be recorded as the first sub-stage in the monitoring stage. In the first sub-stage, a judgment is made based on the change value of the rotational speed at the current moment and the recorded maximum value to determine whether the difference between the maximum value and the change value of the rotational speed at the current moment is greater than a first calibration limit value.

[0022] As an example, in response to the state machine being in the monitoring stage, the change values of the rotational speeds N1 to N10 at a total of ten moments from t1 to t10 are obtained. At the t1 moment, the change value of the rotational speed at the current moment is N1, and the maximum value is N1. At the t2 moment, the change value of the rotational speed at the current moment is N2, and N2 is greater than N1, and the maximum value is updated to N2. At the t10 moment, the change value of the rotational speed at the current moment is N10, and the maximum value is the largest change value among N1 to N10.

[0023] Step 102, if the difference between the maximum value and the change value of the rotational speed at the current moment is greater than the first calibration limit value, then start to record the minimum value from the change values of the rotational speeds at each moment.

[0024] In this embodiment, when the difference between the maximum value and the rotational speed change value at the current moment is greater than the first calibration limit value, it is determined as the second sub-stage in the monitoring stage. In the second sub-stage, the rotational speed change values of the input shaft of the automatic transmission at each moment are obtained, and the minimum value is recorded among the rotational speed change values at each moment in the second sub-stage. Then, a judgment is made based on the rotational speed change value at the current moment and the recorded minimum value to determine whether the difference between the rotational speed change value at the current moment and the minimum value is greater than the second calibration limit value.

[0025] As an example, at time t100, it enters the second sub-stage, and the rotational speed change values N100 to N110 at a total of ten moments from t100 to t110 are obtained. At time t100, the rotational speed change value at the current moment is N100, and the minimum value is N100. At time t110, the rotational speed change value at the current moment is N110, and the minimum value is the smallest rotational speed change value among N100 to N110.

[0026] Step 103, if the difference between the rotational speed change value at the current moment and the minimum value is greater than the second calibration limit value, then update the maximum value according to the rotational speed change values at each moment until the monitoring stage ends.

[0027] In this embodiment, when it is detected that the difference between the rotational speed change value at the current moment and the minimum value is greater than the second calibration limit value, it is determined as the third sub-stage in the monitoring stage. In the third sub-stage, the rotational speed change values of the input shaft of the automatic transmission at each moment are obtained, and the maximum value is continuously recorded among the rotational speed change values at each moment in the third sub-stage until the monitoring stage ends. Thus, when the overfilling phenomenon occurs, the upward change trend of the input shaft rotational speed is delayed. Therefore, the maximum value is recorded in the first sub-stage. Then, when the difference between the maximum value and the rotational speed change value at the current moment is greater than the first calibration limit value, it enters the second sub-stage and starts to record the minimum value. Further, when the difference between the rotational speed change value at the current moment and the minimum value is greater than the second calibration limit value, the input shaft rotational speed gradually resumes to rise. At this time, it enters the third sub-stage and records the maximum value until the monitoring stage ends, obtaining the maximum value and the minimum value corresponding to this monitoring stage.

[0028] The judgment conditions for the end of the monitoring stage include: the timing duration corresponding to the clutch being closed for the current shift exceeds the second preset duration, where the second preset time is greater than the first preset time; or, the clutch being closed for the current shift enters the speed regulation start stage.

[0029] As an example, the first preset duration is set as Tm1, the second preset duration is set as Tm2, the timing duration when reaching the speed regulation start stage is Tm3, and the monitoring time period of the monitoring stage is Tm2 - Tm1, or Tm3 - Tm1.

[0030] Among them, the first calibration limit value and the second calibration limit value are determined according to the fluctuation and overall change trend of the rotational speed change value in the overfilled oil sample, and are specifically configured to be able to filter out the fluctuation while being able to detect the overall change trend.

[0031] Step 104, determine the overfilled oil influence coefficient according to the difference between the maximum value and the minimum value.

[0032] In this embodiment, the influence adjustment value is determined according to the difference between the maximum value and the minimum value in the current monitoring stage, and the overfilled oil influence coefficient is adjusted according to the influence adjustment value. Optionally, the difference between the maximum value and the minimum value is positively correlated with the influence adjustment value. After adjusting the overfilled oil influence coefficient in each monitoring stage, it is further determined whether the overfilled oil influence coefficient meets the preset conditions.

[0033] Step 105, when the overfilled oil influence coefficient meets the preset conditions, re-perform the oil filling self-learning to generate an oil filling self-learning value.

[0034] In this embodiment, when the overfilled oil influence coefficient is greater than the preset threshold, the current oil filling self-learning value is deleted, and the oil filling self-learning is re-performed to generate an oil filling self-learning value. Among them, the oil filling self-learning value includes parameters such as the oil filling time and the current-oil pressure correspondence relationship.

[0035] According to the technical solution of the embodiment of the present disclosure, in response to the state machine being in the monitoring stage, the rotational speed change value of the input shaft of the automatic transmission is obtained, and the maximum value is recorded from the rotational speed change values at each moment. Furthermore, if the difference between the maximum value and the rotational speed change value at the current moment is greater than the first calibration limit value, the minimum value is started to be recorded from the rotational speed change values at each moment. Further, if the difference between the rotational speed change value at the current moment and the minimum value is greater than the second calibration limit value, the maximum value is updated according to the rotational speed change values at each moment until the monitoring stage ends, and the overfilled oil influence coefficient is determined according to the difference between the maximum value and the minimum value. Thus, by monitoring the rotational speed change value in the above order during the monitoring stage, it is reasonable to judge whether there is an overfilled oil phenomenon and determine the degree to which the overfilled oil affects driving, and it is not necessary to monitor the actual oil pressure at all times, reducing the number of sensors. And when the overfilled oil influence coefficient meets the preset conditions, the oil filling self-learning is re-performed to generate an oil filling self-learning value, and the oil filling self-learning is used to weaken the impact caused by overfilled oil due to hardware attenuation, calibration differentiation, environmental change and other influences, thereby reducing the occurrence of subsequent overfilled oil phenomena and improving the driving experience.

[0036] Based on the above embodiment, Figure 2 is a schematic flowchart of another overfilled oil processing method for an automatic transmission provided by the embodiment of the present disclosure. The following will be described in conjunction with Figure 2 for illustration.

[0037] In this embodiment, the states of the state machine include the default stage, the monitoring stage, and the interruption stage. The state machine is initially in the default stage. When the conditions are met, the state of the state machine switches from the default stage to the monitoring stage. When the state machine is in the monitoring stage, it monitors the change value of the rotational speed of the input shaft of the automatic transmission. Three variables are recorded in the monitoring stage: the maximum value MAX, the minimum value MIN, and the difference Chg = MAX - MIN of the change value of the input shaft rotational speed. When exiting due to special circumstances not meeting the conditions during the monitoring stage, it enters the interruption stage. At this time, it is considered that the current monitoring is inaccurate, that is, the subsequent overcharge oil judgment is not performed for this gear shift, and it waits for the next gear shift to re - judge. Refer to Figure 2 , when the monitoring stage ends, the state of the state machine switches to the default stage, and subsequent judgment processing is performed based on the maximum value and the minimum value in the monitoring stage to determine the overcharge oil influence coefficient.

[0038] Among them, after the state machine is in the monitoring stage, it is detected whether the state machine enters the interruption stage. If the state machine enters the interruption stage, the step of determining the overcharge oil influence coefficient is not executed, and the maximum value and the minimum value recorded in the current monitoring stage are deleted. The conditions for the state machine to enter the interruption stage include: the currently closing clutch of this gear shift has not experienced the speed regulation start stage and is already in the speed change stage.

[0039] Based on the above - mentioned embodiment, Figure 3 is a schematic flowchart of another overcharge oil processing method for an automatic transmission provided by an embodiment of the present disclosure. The following will be described in conjunction with Figure 3 for illustration.

[0040] In an embodiment of the present disclosure, determining the overcharge oil influence coefficient according to the difference between the maximum value and the minimum value includes: when the minimum value is less than the third calibration limit value, obtaining a preset relationship matching the current gear shift information, querying the preset relationship according to the difference between the maximum value and the minimum value to determine the corresponding influence level, and updating the overcharge oil influence coefficient according to the influence level. In this embodiment, preset relationships are respectively set for different gear shift information, and the difference ranges corresponding to the same influence level in different preset relationships can be different. Among them, the influence level represents the severity of overcharge oil, and the third calibration limit value can be set by itself. For example, the third calibration limit value is set to 0.

[0041] As an example, the impact levels include normal level, minor level, moderate level, and severe level. Among them, according to the impact level, the overcharge oil impact coefficient is updated, including: determining the impact adjustment value corresponding to the impact level, and then adding the impact adjustment value to the current overcharge oil impact coefficient to update the overcharge oil impact coefficient. In this example, the normal level corresponds to the first adjustment value, the minor level corresponds to the second adjustment value, the moderate level corresponds to the third adjustment value, and the severe level corresponds to the fourth adjustment value. The first adjustment value is less than the second adjustment value, the second adjustment value is less than the third adjustment value, the third adjustment value is less than the fourth adjustment value, and the first adjustment value is zero. For example, the second adjustment value is set to 1, the third adjustment value is set to 2, and the fourth adjustment value is set to 3.

[0042] In this embodiment, the vehicle performs oil filling self-learning in advance to obtain the oil filling self-learning value. During the vehicle driving process, overcharge oil judgment is performed. When the impact level of overcharge oil is determined, the current overcharge oil impact coefficient is added with the impact adjustment value corresponding to the impact level. When the overcharge oil impact coefficient is greater than a certain value, it is determined that the oil filling self-learning value is no longer applicable to the current automatic transmission due to factors such as hardware attenuation. Therefore, the oil filling self-learning value and the overcharge oil impact coefficient are cleared, and oil filling self-learning is performed again to determine the oil filling parameters suitable for the current automatic transmission. Thus, it is possible to real-time judge whether overcharge oil occurs and accumulate values according to the severity under the condition of known signals such as input shaft speed, oil temperature, and gear position, until the conditions are met to clear the oil filling self-learning value for re-learning, thereby reducing the occurrence of subsequent overcharge oil phenomena and improving the driving experience.

[0043] Figure 4 It is a schematic structural diagram of an overcharge oil processing device for an automatic transmission provided by an embodiment of the present disclosure, as Figure 4 shown. The overcharge oil processing device for the automatic transmission includes: a first monitoring module 41, a second monitoring module 42, a third monitoring module 43, a determination module 44, and an update module 45.

[0044] The first monitoring module 41 is configured to, in response to the state machine being in the monitoring stage, obtain the rotational speed change value of the input shaft of the automatic transmission and record the maximum value from the rotational speed change values at each moment; The second monitoring module 42 is configured to, if the difference between the maximum value and the rotational speed change value at the current moment is greater than the first calibration limit value, start to record the minimum value from the rotational speed change values at each moment; The third monitoring module 43 is configured to, if the difference between the rotational speed change value at the current moment and the minimum value is greater than the second calibration limit value, update the maximum value according to the rotational speed change values at each moment until the monitoring stage ends; The determination module 44 is configured to determine the overcharge oil impact coefficient according to the difference between the maximum value and the minimum value; An update module 45, configured to re - perform oil filling self - learning to generate an oil filling self - learning value when the over - oil - filling influence coefficient meets a preset condition.

[0045] In an embodiment of the present disclosure, the conditions for the state machine to enter the monitoring stage include: The function total enable switch is set to 1, and the gear enable switch is set to 1; The automatic transmission oil temperature is within a specified temperature range; The state of the torque converter is within a preset range; The timing duration corresponding to the clutch being closed during the current shift exceeds a first preset duration; wherein, the clutch being closed during the current shift is timed from the start of oil filling to the end of the torque exchange stage.

[0046] In an embodiment of the present disclosure, the judgment conditions for the end of the monitoring stage include: The timing duration corresponding to the clutch being closed during the current shift exceeds a second preset duration; the second preset time is greater than the first preset time; Or, the clutch being closed during the current shift enters the speed regulation start stage.

[0047] In an embodiment of the present disclosure, the device further includes: An interruption module, configured to detect whether the state machine enters the interruption stage; If the state machine enters the interruption stage, the step of determining the over - oil - filling influence coefficient is not executed, and the maximum value and the minimum value recorded in the current monitoring stage are deleted.

[0048] In an embodiment of the present disclosure, the conditions for the state machine to enter the interruption stage include: The clutch being closed during the current shift has not experienced the speed regulation start stage and is already in the gear - shifting stage.

[0049] In an embodiment of the present disclosure, the determining module 44 is specifically configured to: When the minimum value is less than the third calibration limit value, obtain a preset relationship matching the current shift information; Query the preset relationship according to the difference between the maximum value and the minimum value to determine the corresponding influence level; Update the over - oil - filling influence coefficient according to the influence level.

[0050] In an embodiment of the present disclosure, the influence levels include a normal level, a slight level, a moderate level, and a severe level. The determining module 44 is specifically configured to: Determine the impact adjustment value corresponding to the impact level; among them, the normal level corresponds to the first adjustment value, the slight level corresponds to the second adjustment value, the moderate level corresponds to the third adjustment value, the severe level corresponds to the fourth adjustment value, the first adjustment value is less than the second adjustment value, the second adjustment value is less than the third adjustment value, the third adjustment value is less than the fourth adjustment value, and the first adjustment value is zero; Add the impact adjustment value to the current overcharge oil impact coefficient to update the overcharge oil impact coefficient.

[0051] The overcharge oil processing device of the automatic transmission provided by the embodiments of the present disclosure can execute any overcharge oil processing method of the automatic transmission provided by the embodiments of the present disclosure, and has the corresponding functional modules and beneficial effects for executing the method. The content not described in detail in the device embodiments of the present disclosure can be referred to the description in any method embodiment of the present disclosure.

[0052] The embodiments of the present disclosure also provide an electronic device, which includes one or more processors and a memory. The processor may be a central processing unit (CPU) or other forms of processing units with data processing capabilities and / or instruction execution capabilities, and may control other components in the electronic device to perform desired functions. The memory may include one or more computer program products, and the computer program products may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. Volatile memory may include, for example, random access memory (RAM) and / or cache memory, etc. Non-volatile memory may include, for example, read-only memory (ROM), hard disk, flash memory, etc. One or more computer program instructions may be stored on the computer-readable storage media, and the processor may run the program instructions to implement the methods of the embodiments of the present disclosure above and / or other desired functions. Various contents such as input signals, signal components, noise components, etc. may also be stored in the computer-readable storage media.

[0053] In one example, the electronic device may further include: an input device and an output device, and these components are interconnected through a bus system and / or other forms of connection mechanisms. In addition, the input device may include, for example, a keyboard, a mouse, etc. The output device may output various information to the outside, including the determined distance information, direction information, etc. The output device may include, for example, a display, a speaker, a printer, and a communication network and its connected remote output devices, etc. In addition, according to specific application scenarios, the electronic device may further include any other appropriate components such as a bus, an input / output interface, etc.

[0054] In addition to the above methods and devices, embodiments of the present disclosure may also be computer program products, which include computer program instructions that, when run on a processor, cause the processor to execute any method provided by the embodiments of the present disclosure.

[0055] The computer program product may be written in any combination of one or more programming languages for programming code to perform the operations of the embodiments of the present disclosure. The programming languages include object-oriented programming languages such as Java, C++, etc., and also include conventional procedural programming languages such as the "C" language or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, executed as a stand-alone software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0056] In addition, embodiments of the present disclosure may also be computer-readable storage media, on which computer program instructions are stored that, when run on a processor, cause the processor to execute any method provided by the embodiments of the present disclosure.

[0057] The computer-readable storage medium may employ any combination of one or more readable media. The readable media may be a readable signal medium or a readable storage medium. The readable storage medium may, for example, include but is not limited to an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples of the readable storage medium (a non-exhaustive list) include: an electrical connection having one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0058] It should be noted that in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variation thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0059] The above are only specific embodiments of the present disclosure, enabling those skilled in the art to understand or implement the present disclosure. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to these embodiments described herein, but rather will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An overfilled oil treatment method for an automatic transmission, characterized in that, The method includes: In response to the state machine being in the monitoring stage, obtaining the rotational speed change value of the input shaft of the automatic transmission, and recording the maximum value from the rotational speed change values at each moment; If the difference between the maximum value and the rotational speed change value at the current moment is greater than the first calibrated limit, then start recording the minimum value from the rotational speed change values at each moment; If the difference between the rotational speed change value at the current moment and the minimum value is greater than the second calibrated limit, then update the maximum value according to the rotational speed change values at each moment until the monitoring stage ends; Determining an overfilled oil influence coefficient based on the difference between the maximum value and the minimum value; When the overfilled oil influence coefficient meets a preset condition, re-performing oil filling self-learning to generate an oil filling self-learning value.

2. The method according to claim 1, characterized in that, The conditions for the state machine to enter the monitoring stage include: The function total enable switch is set to 1, and the gear enable switch is set to 1; The oil temperature of the automatic transmission is within a specified temperature range; The state of the torque converter is within a preset range; The timing duration corresponding to the currently closing clutch for this gear shift exceeds a first preset duration; wherein, the currently closing clutch for this gear shift is timed from the start of oil filling to the end of the torque exchange stage.

3. The method according to claim 2, wherein The judgment conditions for the end of the monitoring stage include: The timing duration corresponding to the currently closing clutch for this gear shift exceeds a second preset duration; the second preset time is greater than the first preset time; Or, the currently closing clutch for this gear shift enters the speed regulation start stage.

4. The method according to claim 1, characterized in that After the state machine is in the monitoring stage, the method further includes: Detecting whether the state machine enters an interruption stage; If the state machine enters the interruption stage, then do not perform the step of determining the overfilled oil influence coefficient, and delete the maximum value and the minimum value recorded in this monitoring stage.

5. The method according to claim 4, characterized in that, The conditions for the state machine to enter the interruption stage include: The currently closing clutch for this gear shift has not experienced the speed regulation start stage and is already in the gear shifting stage.

6. The method according to claim 1, wherein The determining the overfilled oil influence coefficient based on the difference between the maximum value and the minimum value includes: When the minimum value is less than a third calibrated limit, obtaining a preset relationship matching the current gear shift information; Querying the preset relationship according to the difference between the maximum value and the minimum value to determine the corresponding influence level; Updating the overfilled oil influence coefficient according to the influence level.

7. The method according to claim 6, wherein The influence levels include a normal level, a slight level, a moderate level, and a severe level. The updating the overfilled oil influence coefficient according to the influence level includes: Determining an influence adjustment value corresponding to the influence level; wherein, the normal level corresponds to a first adjustment value, the slight level corresponds to a second adjustment value, the moderate level corresponds to a third adjustment value, the severe level corresponds to a fourth adjustment value, the first adjustment value is less than the second adjustment value, the second adjustment value is less than the third adjustment value, the third adjustment value is less than the fourth adjustment value, and the first adjustment value is zero; Adding the influence adjustment value to the current overfilled oil influence coefficient to update the overfilled oil influence coefficient.

8. An overfilled oil treatment device for an automatic transmission, characterized in that, Includes: The first monitoring module is configured to, in response to the state machine being in the monitoring phase, obtain the rotational speed change value of the input shaft of the automatic transmission and record the maximum value from the rotational speed change values at each moment; The second monitoring module is configured to, if the difference between the maximum value and the rotational speed change value at the current moment is greater than the first calibration limit value, start to record the minimum value from the rotational speed change values at each moment; The third monitoring module is configured to, if the difference between the rotational speed change value at the current moment and the minimum value is greater than the second calibration limit value, update the maximum value according to the rotational speed change values at each moment until the monitoring phase ends; The determination module is configured to determine the overfill oil influence coefficient according to the difference between the maximum value and the minimum value; The update module is configured to, when the overfill oil influence coefficient meets the preset condition, re-perform the oil filling self-learning to generate an oil filling self-learning value.

9. An electronic device, characterized in that, Comprising: A processor; A memory for storing the executable instructions of the processor; The processor is configured to read the executable instructions from the memory and execute the instructions to implement the overfill oil processing method of the automatic transmission according to any one of claims 1-7 above.

10. A computer-readable storage medium, characterized in that, The storage medium stores a computer program, and when the computer program is executed by the processor, it implements the overfill oil processing method of the automatic transmission according to any one of claims 1-7 above.

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