Pre-filling oil control method, control device, storage medium, clutch and vehicle

Abstract

The application discloses a pre-filling oil control method, a control device, a storage medium, a clutch and a vehicle. The pre-filling oil control method of the clutch comprises the following steps: obtaining a start-stop parameter corresponding to start information of the vehicle after the engine is started; determining a target oil pressure and a target torque of a pre-filling first stage of the clutch according to the start-stop parameter; filling a hydraulic oil cavity in which the clutch is located with oil according to a filling oil parameter corresponding to the target torque; obtaining an actual oil pressure in the hydraulic oil cavity; and determining a pre-filling first stage completion strategy according to the actual oil pressure and the target oil pressure. Thus, the target oil pressure and the target torque are adjusted according to the start-stop parameter, so that the target oil pressure and the target parameter can be matched with the state of the vehicle, thereby effectively reducing the oil filling error of the wet clutch in the pre-filling first stage.

Description

TECHNICAL FIELD

[0001] The present application relates to the clutch technical field, especially relates to a pre-filling oil control method, a control device, a storage medium, a clutch and a vehicle. BACKGROUND

[0002] The wet double clutch is very popular in the market due to its smooth gear shifting and good fuel economy. The double clutch is a transmission mechanism that can not only transmit power but also cut off power. The double clutch is normally open, that is, there is a certain gap between the friction plates of the clutch, and the clutch friction plates are combined by the pressure of the hydraulic oil during work, so as to realize torque transmission. In terms of the physical structure of the wet double clutch itself, there are two hydraulic oil chambers in the two clutches respectively, and the pressure of the hydraulic oil acts on the clutch friction plate. The gap between the hydraulic oil chamber in the clutch and the clutch friction plate will affect the response speed of the clutch torque transmission. If the clutch is not pre-charged before the clutch transmits torque, the pressure of the clutch will not be normal during actual work, which will affect the drivability of the vehicle. If the pre-charging pressure is insufficient, the pressure acting on the clutch during the subsequent torque exchange process will be less than the target pressure, thereby causing the engine load to decrease and the engine speed to rise rapidly. If the engine speed rises too much, the clutch plate will generate a large amount of heat due to sliding friction, which will exacerbate the wear of the clutch and affect the service life of the clutch. At present, the pre-charging of the clutch has multiple stages, and in the first stage of pre-charging, the hydraulic oil is filled into the oil chamber. The existing wet clutch usually fills the hydraulic oil to the preset oil filling parameter in the first stage of pre-charging, but since the hydraulic oil in the clutch is related to the state of the vehicle, when the state of the vehicle changes, the state of the hydraulic oil in the clutch will also change, so that the oil filling error in the first stage of pre-charging is large. SUMMARY

[0003] The main purpose of the present application is to provide a pre-filling oil control method, a control device, a storage medium, a clutch and a vehicle, which aims to solve the problem that the actual oil pressure and the target oil pressure of the clutch in the first stage of pre-charging are greatly different.

[0004] To achieve the above-mentioned purpose, the present application provides a clutch pre-filling oil control method, comprising:

[0005] After the engine is started, the start information of the vehicle is obtained, and the start-stop parameters corresponding to the start information are determined, and the target oil pressure and the target torque of the first stage of pre-charging of the clutch are determined according to the start-stop parameters;

[0006] The hydraulic oil chamber in which the clutch is located is filled with oil according to the oil filling parameters corresponding to the target torque;

[0007] The actual oil pressure in the hydraulic oil chamber is obtained;

[0008] determine a pre-charge first stage completion strategy according to the actual oil pressure and the target oil pressure.

[0009] Optionally, the determining the pre-charge first stage completion strategy according to the actual oil pressure and the target oil pressure comprises:

[0010] when the actual oil pressure does not satisfy a preset completion condition, continuing to perform oil charging on the hydraulic oil cavity of the clutch according to the oil charging parameter corresponding to the target torque;

[0011] when the actual oil pressure satisfies the preset completion condition, determining that the pre-charge first stage is completed.

[0012] Optionally, the oil charging parameter corresponding to the target torque is greater than an oil charging parameter corresponding to a regular oil pressure.

[0013] Optionally, the start-stop parameter comprises an actual stop time length of the engine and current gear information of vehicle starting;

[0014] The obtaining of the start-stop parameter corresponding to the starting information of the vehicle comprises:

[0015] obtaining an actual stop time length of the engine and current gear information of vehicle starting;

[0016] determining a calculated stop time length of the engine according to the actual stop time length;

[0017] determining the target oil pressure and the target torque according to the current gear information, the calculated stop time length and a preset mapping relationship, wherein the preset mapping relationship is an association relationship between the gear information, the calculated stop time length and the target oil pressure and the target torque.

[0018] Optionally, the determining of the calculated stop time length of the engine according to the actual stop time length comprises:

[0019] when the actual stop time length is greater than a preset stop time length, determining the preset stop time length as the calculated stop time length;

[0020] when the actual stop time length is not greater than the preset stop time length, determining the actual stop time length as the calculated stop time length.

[0021] The application also provides a clutch control device, which comprises a memory, a processor and a pre-oil charging control program of a clutch stored in the memory and executable on the processor, and the pre-oil charging control program of the clutch is configured to implement the steps of the clutch pre-oil charging control method.

[0022] The application also provides a storage medium, wherein a pre-oil filling control program of the clutch is stored on the storage medium, and the pre-oil filling control program of the clutch is executed by a processor to realize the steps of the clutch pre-oil filling control method.

[0023] The application further provides a wet clutch comprising the clutch control device.

[0024] The application further provides a vehicle comprising the wet clutch.

[0025] In the technical scheme, the state of the hydraulic oil in the wet clutch is different when the stop time of the vehicle and the gear information of the vehicle are different, and if the target oil pressure and the target torque are not adjusted correspondingly, a large oil filling error of the wet clutch in the first pre-oil filling stage is caused, therefore, the target oil pressure and the target torque of the wet clutch in the first pre-oil filling stage are adjusted by the start-stop parameter of the vehicle, the wet clutch is filled with oil by the oil filling parameter corresponding to the target torque, so as to control the oil filling process to prevent the oil filling from being too fast or too slow, and whether the first pre-oil filling stage of the wet clutch is completed is judged according to the actual oil pressure and the target oil pressure, so that the target oil pressure and the target torque are adjusted by the start-stop parameter, so that the target oil pressure and the target parameter can match the state of the vehicle, thereby effectively reducing the oil filling error of the wet clutch in the first pre-oil filling stage. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from the drawings shown without creative labor.

[0027] Figure 1 The structure diagram of the clutch control device related to the embodiment of the present application is shown in the figure.

[0028] Figure 2 The first flowchart of the clutch pre-oil filling control method provided by the present application is shown in the figure.

[0029] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the drawings. DETAILED DESCRIPTION

[0030] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative efforts on the basis of the present application fall within the protection scope of the present application.

[0031] It should be noted that if the embodiments of the present application involve directional indications, the directional indications are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0032] In addition, if the embodiments of the present application involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that the technical solutions can be realized by those of ordinary skill in the art, and when the combination of the technical solutions is contradictory or cannot be realized, it should be considered that the combination of the technical solutions does not exist, and is also not within the protection scope of the present application.

[0033] The wet double clutch is popular in the market due to its smooth gear shifting and good fuel economy. The double clutch is a transmission mechanism that can transmit power and cut off power. The double clutch is normally open, that is, there is a certain gap between the friction plates of the clutch, and the clutch friction plates are combined by the pressure of hydraulic oil during work to realize torque transmission. In terms of the physical structure of the wet double clutch itself, there are two hydraulic oil cavities in the two clutches respectively, and the pressure of the hydraulic oil acts on the clutch friction plate. The gap between the hydraulic oil cavity in the clutch and the clutch friction plate will affect the response speed of the clutch torque transmission. If the clutch is not pre-charged before the clutch transmits torque, the pressure of the clutch will not be normal during actual work, which will affect the drivability of the vehicle. If the pre-charge oil pressure is insufficient, the pressure acting on the clutch during the subsequent torque exchange process will be less than the target pressure, thereby causing the engine load to decrease, causing the engine speed to rise, and if the engine speed rises too much, the clutch plate will generate a large amount of heat due to sliding friction, which will exacerbate the wear of the clutch and affect the service life of the clutch. At present, the pre-charge oil of the clutch has multiple stages, among which the first stage of pre-charge oil mainly fills the hydraulic oil cavity. The existing wet clutch usually fills the hydraulic oil to the preset oil filling parameter in the first stage of pre-charge oil, but since the hydraulic oil in the clutch is related to the state of the vehicle, when the state of the vehicle changes, the state of the hydraulic oil in the clutch will also change, so that the oil filling error of the clutch in the first stage of pre-charge oil is large.

[0034] Therefore, the present application provides a wet clutch, which comprises a clutch control device, the clutch control device is drivingly connected with an oil filling driving device, and the oil filling driving device is used to fill the wet clutch with oil. In the present application, the oil filling driving device is controlled by the clutch control device to fill the wet clutch with oil, so that the wet clutch can adjust the preset oil filling parameter according to the state of the vehicle, thereby effectively reducing the oil filling error of the wet clutch in the first stage of pre-charge oil.

[0035] As Figure 1As shown, the control device can 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 realize the connection communication between the components. The user interface 1003 can include a display, an input unit such as a keyboard, and can also include a standard wired interface, a wireless interface. The network interface 1004 can optionally include a standard wired interface, a wireless interface (such as a wireless fidelity (Wi-Fi) interface). The memory 1005 can be a high-speed random access memory (RAM), and can also be a stable non-volatile memory (NVM), such as a disk memory. The memory 1005 can also be a storage device independent of the aforementioned processor 1001.

[0036] As shown in the control device, Figure 1 The memory 1005 as a storage medium can include an operating system, a network communication module, a user interface module, and a control program of the control device of the machine tool.

[0037] In the control device shown in the control device, Figure 1 In the control device shown in the control device, 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 control device of the application can be arranged in the control device, and the control device calls the control program of the control device stored in the memory 1005 through the processor 1001, and executes the control method of the control device provided by the embodiment of the application.

[0038] In addition, the application also provides a vehicle, the vehicle includes the above-mentioned wet clutch. It should be noted that the structure of the wet clutch in the vehicle can refer to the above-mentioned embodiments of the wet clutch, which will not be repeated here; since the above-mentioned wet clutch is used in the vehicle provided by the application, the embodiments of the vehicle provided by the application include all the technical solutions of all the embodiments of the above-mentioned wet clutch, and the technical effects achieved are also completely the same, which will not be repeated here.

[0039] In the control device shown in the control device, Figure 1 In the control device shown in the control device, the processor 1001 calls the clutch pre-charge oil control program stored in the memory 1005, and performs the following operations:

[0040] After the engine starts, an engine start information corresponding start-stop parameter is acquired, and a target oil pressure and a target torque of a first stage of clutch pre-charging are determined according to the start-stop parameter;

[0041] The hydraulic oil cavity in which the clutch is located is filled with oil according to the oil filling parameter corresponding to the target torque;

[0042] An actual oil pressure in the hydraulic oil cavity is acquired;

[0043] A first stage of pre-charging completion strategy is determined according to the actual oil pressure and the target oil pressure.

[0044] Further, the first stage of pre-charging completion strategy is determined according to the actual oil pressure and the target oil pressure, comprising:

[0045] When the actual oil pressure does not satisfy a preset completion condition, the hydraulic oil cavity in which the clutch is located is continuously filled with oil according to the oil filling parameter corresponding to the target torque;

[0046] When the actual oil pressure satisfies the preset completion condition, it is determined that the first stage of pre-charging is completed.

[0047] Further, the clutch pre-oil control method further comprises acquiring a filling change state of the actual oil pressure;

[0048] When the actual oil pressure is equal to the target oil pressure twice continuously within a preset time, it is determined that the actual oil pressure satisfies the preset completion condition.

[0049] Further, the oil filling parameter corresponding to the target torque is greater than the oil filling parameter corresponding to the target oil pressure.

[0050] Further, the start-stop parameter comprises an actual stop time length of the engine and current gear information of vehicle starting;

[0051] The start-stop parameter corresponding to the vehicle start information is acquired, and the target oil pressure and the target torque of the first stage of clutch pre-charging are determined according to the start-stop parameter, comprising:

[0052] An actual stop time length of the engine and current gear information of vehicle starting are acquired;

[0053] A calculated stop time length of the engine is determined according to the actual stop time length;

[0054] The target oil pressure and the target torque are determined according to the current gear information, the calculated stop time length and a preset mapping relationship, wherein the preset mapping relationship is an association relationship between the gear information, the calculated stop time length and the target oil pressure and the target torque.

[0055] Further, the method further comprises:

[0056] When the actual shutdown time length is greater than the preset shutdown time length, the preset shutdown time length is determined as the calculated shutdown time length.

[0057] When the actual shutdown time length is not greater than the preset shutdown time length, the actual shutdown time length is determined as the calculated shutdown time length.

[0058] Based on the hardware structure, the application provides a clutch pre-oil filling control method, the oil filling driving device is controlled by the clutch control device to fill oil in the wet clutch, so that the wet clutch can adjust the preset oil filling parameters according to the vehicle state, thereby effectively reducing the oil filling error of the wet clutch in the first pre-oil filling stage.

[0059] Please refer to Figure 2 , Figure 2 The first flowchart of the clutch pre-oil filling control method provided by the application is shown.

[0060] In this embodiment, the clutch pre-oil filling control method comprises the following steps:

[0061] S10: After the engine is started, the start information of the vehicle is obtained, the start-stop parameters corresponding to the start information are obtained, and the target oil pressure and the target torque of the clutch in the first pre-oil filling stage are determined according to the start-stop parameters;

[0062] It should be understood that the target oil pressure refers to the oil pressure that the wet clutch should reach in the first pre-oil filling stage, and the target torque refers to the torque corresponding to the wet clutch in the first pre-oil filling stage, wherein the torque and the oil pressure in the wet clutch generally have a corresponding relationship, and a corresponding torque corresponds to a certain torque. Since the clutch is mainly used for transmitting torque, the torque parameter is usually used for control in the process of pre-oil filling of the clutch.

[0063] S20: The hydraulic oil cavity in which the clutch is located is filled with oil according to the oil filling parameters corresponding to the target torque;

[0064] S30: The actual oil pressure in the hydraulic oil cavity is obtained;

[0065] S40: The first pre-oil filling completion strategy is determined according to the actual oil pressure and the target oil pressure.

[0066] In the embodiment, the state of the hydraulic oil in the wet clutch is different due to the stop time of the vehicle and the gear information of the vehicle being different, and if the target oil pressure and the target torque are not adjusted accordingly, a large oil filling error of the wet clutch in the first pre-filling stage is caused. Therefore, the target oil pressure and the target torque in the first pre-filling stage of the wet clutch are adjusted by the start-stop parameter, the wet clutch is filled with oil by the oil filling parameter corresponding to the target torque, so as to control the oil filling process to prevent the oil from being filled too fast or too slow, and whether the first pre-filling stage of the wet clutch is completed is determined according to the actual oil pressure and the target oil pressure. In this way, the target oil pressure and the target parameter are matched with the state of the vehicle by adjusting the target oil pressure and the target torque, so that the oil filling error of the wet clutch in the first pre-filling stage is effectively reduced.

[0067] It should be noted that the pre-filling of the clutch has multiple stages, and the first pre-filling stage is mainly to fill the hydraulic oil into the oil chamber. The existing wet clutch usually fills the hydraulic oil to a preset oil pressure in the first pre-filling stage. However, the state of the hydraulic oil in the clutch is related to the state of the vehicle, and when the state of the vehicle changes, the state of the hydraulic oil in the clutch also changes, resulting in a large oil filling error of the clutch in the first pre-filling stage. Therefore, the target oil pressure and the target torque are adjusted by the start-stop parameter in the present application, so that the target oil pressure and the target parameter are matched with the state of the vehicle, thereby effectively reducing the oil filling error of the wet clutch in the first pre-filling stage.

[0068] Further, in order to determine whether the first pre-filling stage of the wet clutch is completed, in an embodiment, the determination of the first pre-filling stage completion strategy according to the actual oil pressure and the target oil pressure comprises:

[0069] S41: When the actual oil pressure does not satisfy the preset completion condition, continue to fill the hydraulic oil chamber of the clutch with the oil filling parameter corresponding to the target torque;

[0070] In the embodiment, when the actual oil pressure does not satisfy the preset completion condition, it indicates that the first pre-filling stage of the wet clutch has not been completed, and it is necessary to continue to fill the hydraulic oil chamber with the oil filling parameter corresponding to the target torque until the actual oil pressure satisfies the preset completion condition.

[0071] It should be understood that the preset completion condition can be understood as the actual oil pressure being equal to the target oil pressure, that is, when the actual oil pressure is equal to the target oil pressure, the first pre-filling stage of the wet clutch is completed.

[0072] In another embodiment, the determining the first-stage pre-charge completion strategy according to the actual oil pressure and the target oil pressure comprises:

[0073] S42: determining that the first-stage pre-charge is completed when the actual oil pressure meets a preset completion condition.

[0074] In an embodiment, when the actual oil pressure meets the preset completion condition, it indicates that the first-stage pre-charge of the wet clutch is completed. It can be understood that the preset completion condition can be understood as that the actual oil pressure is equal to the target oil pressure, that is, when the actual oil pressure is equal to the target oil pressure, the first-stage pre-charge of the wet clutch is completed.

[0075] In theory, when the actual oil pressure is equal to the target oil pressure, the oil pressure of the hydraulic oil in the wet clutch should meet the requirement. However, due to the hysteresis of the sensor detection, there is an error between the actual oil pressure detected by the sensor and the target oil pressure. For example, the oil pressure detected by the sensor is 100 pa, but the actual oil pressure of the system is only 95 pa, and there is a certain deviation between the detected oil pressure and the actual oil pressure. Therefore, in this embodiment, the clutch pre-charge control method further comprises obtaining the pre-charge change state of the actual oil pressure.

[0076] S421: determining that the actual oil pressure meets the preset completion condition when the actual oil pressure is equal to the target oil pressure twice continuously within a preset time.

[0077] In an embodiment, when the sensor detects that the actual oil pressure is equal to the target oil pressure for the first time,

[0078] At this time, there is still an error between the actual oil pressure and the target oil pressure, and further determination is required. It indicates that the actual oil pressure does not meet the requirement at this time, and the first-stage pre-charge of the wet clutch is not completed yet, and the pre-charge needs to be continued. When the sensor detects that the actual oil pressure is equal to the target oil pressure for the second time, at this time, there is no error between the actual oil pressure and the target oil pressure, the actual oil pressure meets the requirement, that is, the actual oil pressure meets the preset completion condition, and the first-stage pre-charge of the wet clutch is completed.

[0079] It should be noted that, in order to eliminate the error in the oil filling process, the actual oil pressure needs to be equal to the target oil pressure twice in succession within a preset time. For example, when the target oil pressure is 100 pa, the actual oil pressure detected by the sensor is only 95 pa due to detection error when the actual oil pressure is detected to be 100 pa for the first time. At this time, the actual oil pressure is not equal to the target oil pressure. When the actual oil pressure is equal to the target oil pressure for the second time, it is indicated that the error has been eliminated. At this time, it is determined that the actual oil pressure is equal to the target oil pressure, that is, the actual oil pressure meets the preset completion condition, and the first stage of pre-filling of the wet clutch is completed. In addition, the preset time can be adjusted as needed, for example, it can be 5 ms or 10 ms, etc. The present application does not limit this.

[0080] Further, the oil filling parameter corresponding to the target torque can be greater than the oil filling parameter corresponding to the conventional oil pressure, or can be less than the oil filling parameter corresponding to the conventional oil pressure, etc. The present application does not limit this. Specifically, in the embodiments, the oil filling parameter corresponding to the target torque is greater than the oil filling parameter corresponding to the conventional oil pressure. Because in the actual oil filling process, the greater the oil filling parameter, the greater the opening of the valve, the greater the oil filling amount of the clutch, and the faster the oil filling, and vice versa. The smaller the oil filling parameter, the smaller the opening of the valve, the smaller the oil filling amount of the clutch, and the slower the oil filling. The oil filling parameter corresponding to the target torque is used in the first stage of pre-filling to speed up the oil filling process of the wet clutch and reduce the oil filling time, so that the actual oil pressure can quickly reach the target oil pressure.

[0081] It can be understood that the oil filling parameter corresponding to the conventional oil pressure refers to the oil filling parameter corresponding to the normal oil pressure in the entire pre-filling process.

[0082] Further, the start-stop parameter includes the actual stop time of the engine and the current gear information of the vehicle start;

[0083] The start-stop parameter corresponding to the obtained start information of the vehicle is used to determine the target oil pressure and the target torque of the clutch in the first stage of pre-filling, comprising:

[0084] S11: obtaining the actual stop time of the engine and the current gear information of the vehicle start;

[0085] It should be noted that the current gear information includes forward gear, reverse gear, and gear size, etc.

[0086] S12: determining the calculated stop time of the engine according to the actual stop time;

[0087] S13: determining the target oil pressure and the target torque according to the current gear information, the calculated stop time length and a preset mapping relationship, wherein the preset mapping relationship is a correlation between the gear information, the calculated stop time length and the target oil pressure and the target torque.

[0088] In the embodiment, the state of the hydraulic oil in the wet clutch is different when the stop time of the vehicle and the gear information of the vehicle are different, and if the target oil pressure and the target torque are not adjusted accordingly, a large oil charging error will be caused in the first stage of pre-charging of the wet clutch. Therefore, the target oil pressure and the target torque are determined according to the current gear information and the effective stop time, so that the target torque and the target oil pressure change according to the change of the effective stop time and the current gear information, thereby adapting the target torque and the target oil pressure to the state of the vehicle.

[0089] Further, theoretically, the target oil pressure and the target torque change with the actual stop time length, but in fact, the change is not constant, but gradually approaches a certain value, and after that, the target oil pressure and the target torque do not change even if the time continues to increase. Therefore, in an embodiment, the calculated stop time length of the engine is determined according to the actual stop time length, comprising:

[0090] S121: when the actual stop time length is greater than a preset stop time length, determining the preset stop time length as the calculated stop time length;

[0091] In the embodiment, when the actual stop time length is greater than the preset stop time length, it indicates that the target oil pressure and the target torque do not change with time, and at this time, the target oil pressure and the target torque remain basically unchanged, so the preset stop time length can be used as the calculated stop time length to determine the target oil pressure and the target torque.

[0092] It can be understood that the preset stop time length should be set according to actual conditions, for example, the preset stop time length can be twenty-four hours, forty-eight hours, etc., and the present application does not limit this, but generally, the state of the hydraulic oil in the clutch changes greatly within twenty-four hours, and changes little after twenty-four hours, so the preset stop time length is twenty-four hours, and when the actual stop time length exceeds twenty-four hours, twenty-four hours should be used to determine the target oil pressure and the target torque. For example, when the actual stop time length is forty hours, the calculated stop time length should be twenty-four hours.

[0093] S122: when the actual stop time length is not greater than the preset stop time length, determining the actual stop time length as the calculated stop time length.

[0094] In the embodiment, when the actual downtime is not greater than the preset downtime, it indicates that the target oil pressure and the target torque will change with time, and when the actual downtime changes, the target oil pressure and the target torque will also change, so the actual downtime should be taken as the calculated downtime to determine the target oil pressure and the target torque.

[0095] It can be understood that the preset downtime should be set according to actual conditions, for example, the preset downtime can be twenty-four hours, forty-eight hours or the like, and the present application does not limit this, but generally, the state of the hydraulic oil in the clutch changes greatly within twenty-four hours, and the change is small after twenty-four hours, so the preset downtime should be twenty-four hours, and when the actual downtime does not exceed twenty-four hours, the actual downtime should be taken to determine the target oil pressure and the target torque. For example, when the actual downtime is ten hours, the calculated downtime should be ten hours.

[0096] The above only describes the preferred embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation, direct / indirect application in other related technical fields within the concept of the present application, and the contents of the present application specification and drawings are included in the patent protection scope of the present application.

Claims

1. A method for controlling clutch pre-filling oil, characterized in that, Includes the following steps: After the engine starts, the start-stop parameters corresponding to the vehicle's start information are obtained, and the target oil pressure and target torque for the first stage of clutch pre-charge are determined based on the start-stop parameters. The hydraulic oil chamber of the clutch is filled with oil according to the filling parameters corresponding to the target torque; Obtain the actual oil pressure inside the hydraulic oil chamber; The strategy for completing the first stage of pre-charging is determined based on the actual oil pressure and the target oil pressure. The step of determining the pre-charge first stage completion strategy based on the actual oil pressure and the target oil pressure includes: If the actual oil pressure does not meet the preset completion conditions, continue to fill the hydraulic oil chamber of the clutch with the filling parameters corresponding to the target torque; When the actual oil pressure meets the preset completion conditions, the first stage of pre-charging is determined to be completed. The start-stop parameters include the actual engine shutdown time and the current gear information when the vehicle starts. The acquisition of start-stop parameters corresponding to the vehicle's start-up information, and the determination of the target oil pressure and target torque for the first stage of clutch pre-charge based on the start-stop parameters, include: Obtain the actual engine downtime and the current gear information when the vehicle starts; The calculated downtime of the engine is determined based on the actual downtime. The target oil pressure and the target torque are determined based on the current gear information, the calculated downtime, and the preset mapping relationship, wherein the preset mapping relationship is the correlation between the gear information, the calculated downtime, the target oil pressure, and the target torque; The step of determining the calculated engine downtime based on the actual downtime includes: When the actual downtime is longer than the preset downtime, the preset downtime is determined as the calculated downtime. When the actual downtime is not greater than the preset downtime, the actual downtime is determined as the calculated downtime.

2. The clutch pre-filling oil control method as described in claim 1, characterized in that, The oil filling parameters corresponding to the target torque are greater than those corresponding to the conventional oil pressure.

3. A clutch control device, characterized in that, The clutch pre-fill control program includes a memory, a processor, and a clutch pre-fill control program stored in the memory and executable on the processor, the clutch pre-fill control program being configured to implement the steps of the clutch pre-fill control method as described in any one of claims 1 to 2.

4. A storage medium, characterized in that, The storage medium stores the pre-fill oil control program of the clutch, which, when executed by the processor, implements the steps of the clutch pre-fill oil control method as described in any one of claims 1 to 2.

5. A wet clutch, characterized in that, Includes the clutch control device as described in claim 3.

6. A vehicle, characterized in that, Includes the wet clutch as described in claim 5.

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