Gearbox clutch control method, device, equipment and storage medium

Abstract

This invention discloses a method, device, equipment, and storage medium for controlling a transmission clutch, belonging to the field of vehicle control technology. The invention acquires the current gear and the current vehicle motion state; when the current gear is a forward gear and the motion state is stationary, it acquires vehicle information; if the vehicle information meets preset control conditions, it controls the transmission clutch to disengage. By controlling the transmission clutch to disengage when the gear is a forward gear and the vehicle is stationary, and under permissible conditions, it reduces churning resistance, thereby achieving the effects of reduced vehicle vibration and lower fuel consumption.

Description

Technical Field

[0001] This invention relates to the field of vehicle control technology, and in particular to a method, device, equipment and storage medium for controlling a transmission clutch. Background Technology

[0002] Engine power is transmitted to the wheels via the transmission. The transmission contains a torque converter (T / C) and a forward clutch (FWD C / H) to control power transmission and interruption. When the vehicle is stopped in D gear, the T / C / U clutch disengages while the forward clutch remains engaged. However, the T / C's churning action causes vehicle vibration and wastes engine energy. Furthermore, the engine speed is lower in D gear than in N / P gear, exacerbating the vibration.

[0003] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is prior art. Summary of the Invention

[0004] The main objective of this invention is to provide a transmission clutch control method, device, equipment, and storage medium, aiming to solve the technical problems of vehicle vibration and engine energy waste caused by current transmission control methods.

[0005] To achieve the above objectives, the present invention provides a transmission clutch control method, the transmission clutch control method comprising the following steps:

[0006] Get the current gear and the current vehicle motion status;

[0007] When the current gear is a forward gear and the motion state is a stationary state, vehicle information is acquired;

[0008] If the vehicle information meets the preset control conditions, the transmission clutch is disengaged.

[0009] Optionally, before disengaging the transmission clutch if the vehicle information meets preset control conditions, the method further includes:

[0010] The vehicle information is compared with the control trigger condition and the control exit condition, respectively, wherein the control trigger condition and the control exit condition have different threshold ranges;

[0011] Based on the comparison results, it is determined whether the vehicle information meets the preset control conditions.

[0012] Optionally, determining whether the vehicle information meets preset control conditions based on the comparison result includes:

[0013] A first judgment result value is obtained based on the comparison result between the vehicle information and the control triggering condition;

[0014] A second judgment result value is obtained based on the comparison result between the vehicle information and the control exit condition;

[0015] Calculate the current judgment result value based on the first judgment result value and the second judgment result;

[0016] When the current judgment result value is the target value, the vehicle information is determined to meet the preset control conditions.

[0017] Optionally, when the current judgment result value is the target value, the vehicle information satisfies the control triggering condition but does not satisfy the control exit condition.

[0018] Optionally, the gearbox clutch control method further includes:

[0019] When the vehicle information does not meet the control trigger condition or meets the control exit condition, it is determined that the vehicle information does not meet the preset control condition, and the transmission clutch is kept engaged.

[0020] Optionally, disengaging the transmission clutch includes:

[0021] The target pressure value is determined based on the clutch pressure-torque characteristic curve;

[0022] Obtain the current pressure value of the transmission clutch and disengage the transmission clutch until the current pressure value reaches the target pressure value.

[0023] Optionally, the gearbox clutch control method further includes:

[0024] The vehicle speed range is determined based on multiple historical vehicle speed signals uploaded by the vehicle speed sensor when the vehicle is stationary;

[0025] The current vehicle speed is obtained, and when the current vehicle speed is within the specified range, the current vehicle's motion state is determined to be stationary.

[0026] Furthermore, to achieve the above objectives, the present invention also proposes a gearbox clutch control device, the gearbox clutch control device comprising:

[0027] The acquisition module is used to acquire the current gear and the current motion state of the vehicle;

[0028] The detection module is used to acquire vehicle information when the current gear is a forward gear and the motion state is a stationary state;

[0029] The control module is used to control the gearbox clutch to disengage if the vehicle information meets preset control conditions.

[0030] Furthermore, to achieve the above objectives, the present invention also proposes a transmission clutch control device, the transmission clutch control device comprising: a memory, a processor, and a transmission clutch control program stored in the memory and running on the processor, the transmission clutch control program being configured to implement the transmission clutch control method as described above.

[0031] Furthermore, to achieve the above objectives, the present invention also proposes a storage medium storing a transmission clutch control program, which, when executed by a processor, implements the transmission clutch control method as described above.

[0032] This invention obtains the current gear and the current vehicle's motion state; when the current gear is a forward gear and the motion state is a stationary state, it obtains vehicle information; if the vehicle information meets preset control conditions, it controls the transmission clutch to disengage. By controlling the transmission clutch to disengage when the gear is a forward gear and the vehicle is stationary, and under permissible conditions, it reduces churning resistance, thereby achieving the effects of reduced vehicle vibration and lower fuel consumption. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of the gearbox clutch control device in the hardware operating environment involved in the embodiments of the present invention;

[0034] Figure 2 This is a flowchart illustrating the first embodiment of the gearbox clutch control method of the present invention;

[0035] Figure 3 This is a schematic diagram of vehicle speed threshold setting in one embodiment of the gearbox clutch control method of the present invention;

[0036] Figure 4 This is a flowchart illustrating the second embodiment of the gearbox clutch control method of the present invention;

[0037] Figure 5 This is a flowchart illustrating the third embodiment of the gearbox clutch control method of the present invention;

[0038] Figure 6 This is a schematic diagram of the clutch pressure-torque characteristic curve in one embodiment of the gearbox clutch control method of the present invention;

[0039] Figure 7 This is a structural block diagram of the first embodiment of the gearbox clutch control device of the present invention.

[0040] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0041] It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0042] Reference Figure 1 , Figure 1 This is a schematic diagram of the gearbox clutch control device structure in the hardware operating environment involved in the embodiments of the present invention.

[0043] like Figure 1 As shown, the gearbox clutch control device may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to enable communication between these components. The user interface 1003 may include a display screen and an input unit such as a keyboard; optionally, the user interface 1003 may also include a standard wired interface or a wireless interface. The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a Wireless-Fidelity (Wi-Fi) interface). The memory 1005 may be a high-speed random access memory (RAM) or a stable non-volatile memory (NVM), such as a disk storage device. The memory 1005 may also optionally be a storage device independent of the aforementioned processor 1001.

[0044] Those skilled in the art will understand that Figure 1 The structure shown does not constitute a limitation on the gearbox clutch control device and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0045] like Figure 1 As shown, the memory 1005, which serves as a storage medium, may include an operating system, a network communication module, a user interface module, and a gearbox clutch control program.

[0046] exist Figure 1 In the transmission clutch control device shown, the network interface 1004 is mainly used for data communication with the network server; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and the memory 1005 in the transmission clutch control device of the present invention can be set in the transmission clutch control device. The transmission clutch control device calls the transmission clutch control program stored in the memory 1005 through the processor 1001 and executes the transmission clutch control method provided in the embodiment of the present invention.

[0047] This invention provides a method for controlling a gearbox clutch, referring to... Figure 2 , Figure 2 This is a flowchart illustrating the first embodiment of a gearbox clutch control method according to the present invention.

[0048] In this embodiment, the gearbox clutch control method includes the following steps:

[0049] Step S10: Obtain the current gear and the current vehicle motion state.

[0050] In this embodiment, the executing entity can be the gearbox clutch control device, which has functions such as data processing, data communication, and program execution. The gearbox clutch control device can be a controller. Of course, other devices with similar functions can also be used, and this embodiment does not limit this. For ease of explanation, this embodiment uses a gearbox clutch control device as an example.

[0051] It's important to note that engine power is transmitted to the wheels via the transmission. The transmission contains a torque converter (T / C) and a forward clutch (FWD C / H) to control power transmission and interruption. The torque converter works similarly to one electric fan blowing another. When the vehicle is in Drive (D) and stationary, the driving pump wheel connected to the ENG (engine) hydraulically drives the driven turbine. Since the turbine is fixed to the wheels at this time, the churning of the oil causes vibrations that are transmitted to the passenger compartment. When the vehicle is stationary in Drive, the T / C / U clutch disengages while the forward clutch remains engaged. However, the churning of the oil by the T / C causes vehicle vibration and wastes engine energy. Furthermore, the ENG speed is lower in Drive than in Neutral (N / P) gears, exacerbating the vibration.

[0052] In this embodiment, to solve the above-mentioned technical problems, the current gear and the current vehicle motion state are obtained; when the current gear is a forward gear and the motion state is a stationary state, vehicle information is obtained; if the vehicle information meets preset control conditions, the transmission clutch is disengaged. By disengaging the transmission clutch when the gear is a forward gear and the vehicle is stationary, and under permissible conditions, the churning resistance is reduced, thereby reducing vehicle vibration and fuel consumption. Specifically, this can be achieved as follows.

[0053] In this specific implementation, the case of the vehicle stopping in D gear is addressed. Therefore, before controlling the transmission clutch, it is necessary to obtain the vehicle's current gear and the vehicle's current motion state. In practical applications, the current gear can be read by the gear position sensor, and the vehicle speed can be obtained by the vehicle speed sensor, thereby obtaining the current motion state of the vehicle.

[0054] It should be noted that the determination of whether a vehicle is stationary is based on the vehicle speed signal uploaded by the vehicle speed sensor. However, due to variations in the accuracy of this signal, the vehicle may actually be stopped, but the speed sensor may not display a reading of zero. Therefore, to avoid this situation, this embodiment sets a speed range. When the speed falls within this range, the vehicle is considered stationary. Specifically, this involves determining the speed range based on multiple historical speed signals uploaded by the vehicle speed sensor when the vehicle is stationary, obtaining the current speed, and determining that the vehicle is stationary when the current speed falls within the specified range. This embodiment further incorporates... Figure 3 The following explanation is provided. The upper and lower limits of the vehicle speed range are VSP1wr = VSP - 3σ + A and VSPupp = VSP + 3σ + A, where VSP - 3σ = μ - 3σ, VSP + 3σ = μ + 3σ, and μ = (VSP1 + VSP2 + ... + VSP) / VSP2 + ... + VSP ... / VSP2 + ... + VSP / VSP / VSP2 + ... + VSP / VSP / VSP2 + ... + VSP / VSP / VSP2 + ... + VSP / VSP / VSP2 + ... + VSP / VSP / VSP2 + ... + VSP / VSP / n ) / n, σ=((VSP1-μ)2+(VSP2-μ)2+……+(VSP n -μ)2 / n), VSP1+VSP2+……+VSP n For the vehicle speed corresponding to multiple historical vehicle speed signals, it can be obtained from Figure 3 The result was obtained from the diagram shown.

[0055] Step S20: When the current gear is forward and the motion state is stationary, obtain vehicle information.

[0056] In specific implementation, after obtaining the current gear and the vehicle's motion state, this embodiment needs to further determine whether the current gear is a forward gear and whether the vehicle is stationary. If it is determined that the current gear is a forward gear and the vehicle is stationary (i.e., the vehicle is stopped in D gear), then this embodiment will further acquire vehicle information. The vehicle information in this embodiment includes, but is not limited to, belt speed ratio, vehicle speed before stopping, parking time, engine speed, brake pedal status, electronic parking system activation status, auto hold function, accelerator pedal opening, gradient, transmission oil temperature, turn signal activation status, and system fault detection information. The vehicle information acquired above is only an example; other relevant vehicle information can be acquired according to actual needs, and this embodiment does not impose any limitations on this.

[0057] Step S30: If the vehicle information meets the preset control conditions, then control the gearbox clutch to disengage.

[0058] In practice, after obtaining the above vehicle information, this embodiment also needs to judge the above vehicle information in combination with preset control conditions. If the vehicle information meets the preset control conditions, the transmission clutch is then controlled to disengage.

[0059] It should be noted that the preset control conditions in this embodiment include control trigger conditions and control exit conditions. When determining whether vehicle information meets the preset control conditions, the vehicle information can be judged separately using the control trigger conditions and control exit conditions. Specifically, both the control trigger conditions and control exit conditions are set with corresponding threshold judgment conditions. However, it should be emphasized that in this embodiment, the control trigger conditions and control exit conditions have different threshold ranges. When judging vehicle information, each parameter value in the vehicle information can be compared with the control trigger conditions and control exit conditions respectively, thereby determining whether the vehicle information meets the preset control conditions. The threshold ranges corresponding to the above control conditions can be set according to actual needs, and this embodiment does not impose any restrictions on this.

[0060] This embodiment obtains the current gear and the current vehicle's motion state; when the current gear is a forward gear and the motion state is stationary, it obtains vehicle information; if the vehicle information meets preset control conditions, it controls the transmission clutch to disengage. By controlling the transmission clutch to disengage when the gear is a forward gear and the vehicle is stationary, and under permissible conditions, it reduces churning resistance, thereby achieving the effects of reduced vehicle vibration and reduced fuel consumption.

[0061] refer to Figure 4 , Figure 4 This is a flowchart illustrating a second embodiment of a gearbox clutch control method according to the present invention.

[0062] Based on the first embodiment described above, a second embodiment of the transmission clutch control method of the present invention is proposed.

[0063] In this embodiment, the gearbox clutch control method further includes the following step before step S30:

[0064] Step S030: Compare the vehicle information with the control trigger condition and the control exit condition respectively.

[0065] In this embodiment, the preset control conditions include control trigger conditions and control exit conditions. When determining whether vehicle information meets the preset control conditions, the vehicle information can be judged separately using the control trigger conditions and control exit conditions. Specifically, both the control trigger conditions and control exit conditions are set with corresponding threshold judgment conditions. However, it should be emphasized that in this embodiment, the control trigger conditions and control exit conditions have different threshold ranges. When judging vehicle information, each parameter value in the vehicle information can be compared with the control trigger conditions and control exit conditions respectively, thereby determining whether the vehicle information meets the preset control conditions.

[0066] This embodiment further illustrates the concept with examples. For instance, when judging the pulley speed ratio in the vehicle information, assuming the pulley speed ratio obtained from the vehicle information is I, the threshold range corresponding to the control trigger condition is >Imin, and the threshold range corresponding to the control exit condition is ≤Imin. If I>Imin, it means that the pulley speed ratio at this time meets the control trigger condition but does not meet the control exit condition. As another example, assuming the engine speed obtained from the vehicle information is Ne, the threshold range corresponding to the control trigger condition is >Ns, and the threshold range corresponding to the control exit condition is ≤Ns. If Ne≤Ns, it means that the engine speed at this time does not meet the control trigger condition but meets the control exit condition. The threshold ranges corresponding to the control trigger conditions and control exit conditions are shown in Table 1 below.

[0067] Table 1:

[0068]

[0069] The threshold range settings in the control triggering conditions and control exit conditions shown in Table 1 above are only illustrative examples and can be adjusted accordingly based on actual conditions. This embodiment does not impose any limitations on these settings. Furthermore, it should be noted that the determination of the pulley speed ratio is used to ensure power during start-up; the determination of the vehicle speed experienced before stopping is used to prevent frequent triggering in congested traffic conditions; the determination of engine speed is used to prevent engine stalling; the determination of brake pedal, EPKB, and Auto Hold is used to ensure the vehicle is in a braking state and prevent rollback; the determination of accelerator pedal opening is used to ensure the vehicle is in a stationary state; the determination of gradient is used to prevent rollback on excessively steep inclines; the determination of transmission oil temperature is used to ensure the oil level is within the commonly used range; the determination of turn signal is used to infer whether the driver is about to start; and the determination of system fault detection is used to prevent this control from being activated for safety when there is a fault in the associated system.

[0070] Step S130: Based on the comparison results, determine whether the vehicle information meets the preset control conditions.

[0071] In specific implementation, after obtaining the above comparison results, this embodiment can determine whether the vehicle information meets the preset control conditions based on the obtained comparison results. It should be noted that the above vehicle information sets multiple parameter values ​​for judgment and comparison. If all parameter values ​​in the vehicle information meet the control trigger conditions, the vehicle information can be considered to meet the control trigger conditions, that is, the preset control conditions are met at this time. However, if any parameter in the vehicle information does not meet the control trigger conditions (that is, if any parameter meets the control exit conditions), the vehicle information can be considered to meet the control exit conditions.

[0072] Furthermore, based on the comparison results of vehicle information and control triggering conditions, a first judgment result value can be obtained. Based on the comparison results of vehicle information and control exit conditions, a second judgment result value can be obtained. Then, based on the first judgment result value and the second judgment result value, the current judgment result value can be calculated. If the current judgment result value is the target value, then it can be considered that the preset control conditions are met at this time.

[0073] In an optional embodiment, the first judgment result value and the second judgment result value include 0 and 1, and the target value is 1. The target value is the product of the first judgment result value and the second judgment result value. When the first judgment result value and the second judgment result value are not both 1, the target value can be calculated as 0; conversely, when both the first judgment result value and the second judgment result value are 1, the target value can be calculated as 1. Further, in this embodiment, if the vehicle information meets the control triggering condition, the corresponding first judgment result value is 1; simultaneously, if the vehicle information does not meet the control triggering condition, the corresponding second judgment result value is 1. A target value of 1 corresponds to the vehicle information meeting the control triggering condition but not the control exit condition; a target value of 0 corresponds to the vehicle information not meeting the control triggering condition but meeting the control exit condition.

[0074] Furthermore, when the vehicle information meets the control trigger condition but does not meet the control exit condition, in this embodiment, the transmission clutch can be disengaged. Conversely, if the vehicle information does not meet the control trigger condition but meets the control exit condition, the transmission clutch is maintained in the current state. That is, when it is determined that the vehicle information does not meet the preset control condition, the transmission clutch is kept engaged.

[0075] This embodiment compares the vehicle information with control triggering conditions and control exiting conditions that have different threshold ranges; obtains a first judgment result value based on the comparison result of the vehicle information and the control triggering conditions; obtains a second judgment result value based on the comparison result of the vehicle information and the control exiting conditions; calculates the current judgment result value based on the first judgment result value and the second judgment result value; and determines that the vehicle information meets the preset control conditions when the current judgment result value is the target value.

[0076] refer to Figure 5 , Figure 5 This is a flowchart illustrating a third embodiment of a gearbox clutch control method according to the present invention.

[0077] Based on the first or second embodiment described above, a third embodiment of the gearbox clutch control method of the present invention is proposed.

[0078] In this embodiment, step S30 further includes:

[0079] Step S301: Determine the target pressure value based on the clutch pressure-torque characteristic curve.

[0080] Step S302: Obtain the current pressure value of the transmission clutch and disengage the transmission clutch until the current pressure value reaches the target pressure value.

[0081] In this specific implementation, the gearbox clutch is disengaged according to a target pressure value. The target pressure value can be determined by the clutch pressure-torque characteristic curve, which can be found in the following reference. Figure 6 As shown, Figure 6 The pressure value corresponding to point O shown is the target pressure value. The horizontal axis of the clutch pressure-torque characteristic curve corresponds to clutch pressure, and the vertical axis corresponds to the clutch transmitted torque. Figure 6 As shown in the characteristic curve, when the clutch pressure is before point O, the torque provided is relatively small as the clutch pressure increases. However, when the clutch pressure is after point O, the torque transmitted by the clutch is greater as the clutch pressure increases, which can provide more power to the vehicle. Therefore, in this embodiment, the pressure value corresponding to point O is taken as the target pressure value. When the current pressure value of the transmission clutch reaches the target pressure value, the control of the transmission clutch is stopped.

[0082] This embodiment determines the target pressure value based on the clutch pressure-torque characteristic curve, obtains the current pressure value of the transmission clutch, and disengages the transmission clutch until the current pressure value reaches the target pressure value. By controlling the disengagement of the transmission clutch through the target pressure value, the system response time can be shortened when starting again, resulting in faster start-up, improved power, and enhanced safety.

[0083] Furthermore, embodiments of the present invention also propose a storage medium storing a transmission clutch control program, wherein the transmission clutch control program, when executed by a processor, implements the steps of the transmission clutch control method described above.

[0084] Since this storage medium adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0085] Reference Figure 7 , Figure 7 This is a structural block diagram of the first embodiment of the gearbox clutch control device of the present invention.

[0086] like Figure 7 As shown, the gearbox clutch control device proposed in this embodiment of the invention includes:

[0087] The acquisition module 10 is used to acquire the current gear and the current motion state of the vehicle.

[0088] The detection module 20 is used to acquire vehicle information when the current gear is a forward gear and the motion state is a stationary state.

[0089] The control module 30 is used to control the gearbox clutch to disengage if the vehicle information meets preset control conditions.

[0090] This embodiment obtains the current gear and the current vehicle's motion state; when the current gear is a forward gear and the motion state is stationary, it obtains vehicle information; if the vehicle information meets preset control conditions, it controls the transmission clutch to disengage. By controlling the transmission clutch to disengage when the gear is a forward gear and the vehicle is stationary, and under permissible conditions, it reduces churning resistance, thereby achieving the effects of reduced vehicle vibration and reduced fuel consumption.

[0091] In one embodiment, the detection module 20 is further configured to compare the vehicle information with a control trigger condition and a control exit condition, wherein the control trigger condition and the control exit condition have different threshold ranges; and determine whether the vehicle information meets the preset control conditions based on the comparison results.

[0092] In one embodiment, the detection module 20 is further configured to obtain a first judgment result value based on the comparison result of the vehicle information and the control triggering condition; obtain a second judgment result value based on the comparison result of the vehicle information and the control exit condition; calculate a current judgment result value based on the first judgment result value and the second judgment result value; and determine that the vehicle information meets the preset control conditions when the current judgment result value is a target value.

[0093] In one embodiment, the control module 30 is further configured to ensure that, when the current judgment result value is the target value, the vehicle information satisfies the control triggering condition but does not satisfy the control exit condition.

[0094] In one embodiment, the control module 30 is further configured to determine that the vehicle information does not meet the preset control conditions when the vehicle information does not meet the control triggering conditions or meets the control exit conditions, and to maintain the gearbox clutch in an engaged state.

[0095] In one embodiment, the control module 30 is further configured to determine a target pressure value based on the clutch pressure-torque characteristic curve; obtain the current pressure value of the transmission clutch; and disengage the transmission clutch until the current pressure value reaches the target pressure value.

[0096] In one embodiment, the detection module 20 is further configured to determine a vehicle speed range based on multiple historical vehicle speed signals uploaded by the vehicle speed sensor when the vehicle is stationary; obtain the current vehicle speed; and determine that the current vehicle's motion state is stationary when the current vehicle speed is within the vehicle speed range.

[0097] It should be understood that the above are merely illustrative examples and do not constitute any limitation on the technical solutions of the present invention. In specific applications, those skilled in the art can make settings as needed, and the present invention does not impose any restrictions on this.

[0098] It should be noted that the workflow described above is merely illustrative and does not limit the scope of protection of this invention. In practical applications, those skilled in the art can select some or all of the workflow to achieve the purpose of this embodiment according to actual needs, and no restrictions are imposed here.

[0099] In addition, for technical details not described in detail in this embodiment, please refer to the gearbox clutch control method provided in any embodiment of the present invention, which will not be repeated here.

[0100] Furthermore, it should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system 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 system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0101] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0102] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as read-only memory (ROM) / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0103] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A method of controlling a gearbox clutch, characterized by, The gearbox clutch control method includes: Get the current gear and the current vehicle motion status; When the current gear is a forward gear and the movement state is a stationary state, vehicle information is acquired. This vehicle information includes pulley ratio, vehicle speed before stopping, parking holding time, engine speed, brake pedal status, electronic parking system activation status, auto hold function, accelerator pedal opening, gradient, transmission fluid temperature, turn signal activation status, and system fault detection information. The pulley ratio is used to ensure power during start-up. The vehicle speed before stopping and parking holding time are used to prevent frequent triggering in congested traffic conditions. The engine speed is used to prevent engine stalling. The brake pedal status, electronic parking system activation status, and auto hold function are used to ensure the vehicle is in a braking state to prevent rolling. The accelerator pedal opening is used to ensure the vehicle is in a stationary state. The gradient is used to prevent rolling on excessively steep gradients. The transmission fluid temperature is used to ensure the fluid level is within the normal operating range. The turn signals are used to determine if the driver is about to start. System fault detection is used to ensure safety by not activating control when there is a system fault. The vehicle information is compared with the control trigger condition and the control exit condition, respectively, wherein the control trigger condition and the control exit condition have different threshold ranges; Based on the comparison results, determine whether the vehicle information meets the preset control conditions; If the vehicle information meets the preset control conditions, then the transmission clutch is disengaged. The control of disengaging the transmission clutch includes: The target pressure value is determined based on the clutch pressure-torque characteristic curve, wherein the torque corresponding to the target pressure value is not zero; Obtain the current pressure value of the transmission clutch and disengage the transmission clutch until the current pressure value reaches the target pressure value.

2. The transmission clutch control method of claim 1, wherein, The step of determining whether the vehicle information meets the preset control conditions based on the comparison result includes: A first judgment result value is obtained based on the comparison result between the vehicle information and the control triggering condition; A second judgment result value is obtained based on the comparison result between the vehicle information and the control exit condition; Calculate the current judgment result value based on the first judgment result value and the second judgment result; When the current judgment result value is the target value, the vehicle information is determined to meet the preset control conditions.

3. The transmission clutch control method of claim 2, wherein, When the current judgment result value is the target value, the vehicle information satisfies the control trigger condition but does not satisfy the control exit condition.

4. The transmission clutch control method of claim 3, wherein, The gearbox clutch control method further includes: When the vehicle information does not meet the control trigger condition or meets the control exit condition, it is determined that the vehicle information does not meet the preset control condition, and the transmission clutch is kept engaged.

5. The gearbox clutch control method according to any one of claims 1 to 4, characterized in that, The gearbox clutch control method further includes: The vehicle speed range is determined based on multiple historical vehicle speed signals uploaded by the vehicle speed sensor when the vehicle is stationary; The current vehicle speed is obtained, and when the current vehicle speed is within the specified range, the current vehicle's motion state is determined to be stationary.

6. A gearbox clutch control device, characterized in that, The gearbox clutch control device includes: The acquisition module is used to acquire the current gear and the current motion state of the vehicle; The detection module is used to acquire vehicle information when the current gear is a forward gear and the motion state is a stationary state. The vehicle information includes belt pulley ratio, vehicle speed before parking, parking holding time, engine speed, brake pedal status, electronic parking system activation status, automatic parking function, accelerator pedal opening, slope, transmission oil temperature, turn signal activation status, and system fault detection information. The detection module is further configured to compare the vehicle information with control trigger conditions and control exit conditions, respectively, wherein the control trigger conditions and the control exit conditions have different threshold ranges; and determine whether the vehicle information meets the preset control conditions based on the comparison results. The control module is used to control the gearbox clutch to disengage if the vehicle information meets preset control conditions. The control module is further configured to determine a target pressure value based on the clutch pressure-torque characteristic curve, wherein the torque corresponding to the target pressure value is not zero; obtain the current pressure value of the transmission clutch, and disengage the transmission clutch until the current pressure value reaches the target pressure value.

7. A gearbox clutch control device, characterized in that, The transmission clutch control device includes: a memory, a processor, and a transmission clutch control program stored in the memory and running on the processor, the transmission clutch control program being configured to implement the transmission clutch control method as described in any one of claims 1 to 5.

8. A storage medium, characterized by The storage medium stores a transmission clutch control program, which, when executed by a processor, implements the transmission clutch control method as described in any one of claims 1 to 5.

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