CN113335281B

CN113335281B - Dual-clutch vehicle starting control method and system

Info

Publication number: CN113335281B
Application number: CN202010096477.XA
Authority: CN
Inventors: 乔利珍; 贾晓伟; 许少华; 贾晔松; 赵俊鑫; 苑国青; 秦勇杰; 范宏亮; 魏英杰; 葛九洋
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2020-02-17
Filing date: 2020-02-17
Publication date: 2023-07-21
Anticipated expiration: 2040-02-17
Also published as: CN113335281A

Abstract

The invention relates to the technical field of vehicles, and provides a method and a system for controlling starting of a double-clutch vehicle, wherein the double clutch is a wet double clutch, and the method for controlling starting of the double-clutch vehicle comprises the following steps: acquiring position state parameters and working condition parameters of a vehicle; when the position state parameter and the working condition parameter meet the condition of activating a preset hill start function, reducing the temperature of a first clutch in the double clutch to be lower than a preset first temperature threshold value, and controlling the first clutch to be capable of outputting torque required for starting the vehicle so that the vehicle finishes starting, wherein the first temperature threshold value is smaller than or equal to a safe temperature value of the first clutch. The invention can realize that the first clutch ensures that the engine torque is transmitted to the maximum extent under special environment, thereby enabling the vehicle to start normally.

Description

Dual-clutch vehicle starting control method and system

Technical Field

The invention relates to the technical field of vehicles, in particular to a starting control method and system for a double-clutch vehicle.

Background

With the popularization of automatic transmission vehicles, a dual clutch automatic transmission (which may be simply referred to as a dual clutch) has become a mainstream of the market due to advantages of high transmission efficiency, no power interruption during gear shifting, and the like. As the user's performance requirements for the vehicle become higher, the accuracy of controlling the clutch needs to be improved in order to meet the user's needs.

For example, when the vehicle starts under some special circumstances (such as high altitude, uphill, etc.), the torque loss of the engine output is large, and as the torque of the engine output increases, the temperature of the clutch (generally referred to as the first clutch) for transmitting the starting torque increases, if the temperature of the first clutch reaches the upper safety temperature limit, the torque of the engine output still fails to overcome the running resistance, and in order to protect the first clutch, the torque of the first clutch output is limited, which eventually results in that the vehicle cannot start against the running resistance.

Disclosure of Invention

In view of the above, the present invention aims to provide a dual clutch vehicle start control method and system, so as to ensure that the first clutch transmits the engine torque to the maximum extent in a special environment, and further enable the vehicle to start normally.

In order to achieve the above purpose, the technical scheme of the invention is realized as follows:

a dual clutch vehicle start control method, the dual clutch vehicle start control method comprising: acquiring position state parameters and working condition parameters of a vehicle; when the position state parameter and the working condition parameter meet the preset activating condition of the hill start function, the temperature of a first clutch in the double clutch is reduced to be lower than a preset first temperature threshold value, and the first clutch is controlled to be capable of outputting torque required for starting the vehicle, so that the vehicle finishes starting, wherein the first temperature threshold value is smaller than or equal to a safe temperature value of the first clutch.

Preferably, the reducing the temperature of the first clutch of the dual clutch below a preset first temperature threshold comprises: and controlling the second clutch output in the double clutch to not drive the preset torque of the vehicle so that the temperature of the first clutch in the double clutch is reduced below a preset first temperature threshold.

Preferably, said controlling the second clutch of the dual clutch to output the preset torque that does not drive the vehicle comprises: controlling a control gear corresponding to the second clutch to be a neutral gear; and controlling the second clutch to output the preset torque under the condition that the corresponding control gear is a neutral gear.

Preferably, the location status parameters include: the altitude at which the vehicle is located and/or the grade at which the vehicle is located; the operating condition parameters include at least one of: gear of the gear lever, opening of the accelerator and temperature value of the first clutch; and, the activation condition of the preset hill start function includes at least one of the following: the altitude of the vehicle is greater than a preset altitude threshold; the gradient of the vehicle is greater than a preset gradient threshold value; the stop lever gear is a vehicle driving gear or a vehicle manual gear; the accelerator opening is larger than a preset accelerator opening threshold; and the temperature value of the first clutch is larger than or equal to a preset second temperature threshold value, wherein the second temperature threshold value is larger than or equal to the first temperature threshold value, and the second temperature threshold value is smaller than or equal to the safety temperature value.

Preferably, before the acquiring the position state parameter and the working condition parameter of the vehicle, the dual clutch vehicle start control method further includes: responding to the selection operation of a user on the hill start function, and turning on a function switch corresponding to the hill start function; and controlling the vehicle to enter a preparation stage of the hill start function when the position state parameter and the working condition parameter of the vehicle meet preset conditions for preparing to enter the hill start function, wherein the preparation stage is configured to be a stage capable of judging whether the position state parameter and the working condition parameter of the vehicle meet preset activating conditions for activating the hill start function in real time.

Preferably, the dual clutch vehicle start control method further includes: determining that the vehicle has completed starting by: the temperature value of the first clutch is less than the first temperature threshold; and/or the vehicle speed exceeds a preset speed threshold.

Preferably, the operating condition further comprises: vehicle speed; and, the preset condition for preparing to enter the hill start function includes at least one of the following: the altitude of the vehicle is greater than a preset altitude threshold; the gradient of the vehicle is greater than a preset gradient threshold value; the vehicle speed is zero; the stop lever gear is a vehicle driving gear or a vehicle manual gear; and the accelerator opening is zero.

In addition, the embodiment also provides a dual clutch vehicle start control system, which includes: the information acquisition unit is used for acquiring the position state parameters and the working condition parameters of the vehicle; and the clutch control unit is used for reducing the temperature of a first clutch in the double clutch to be below a preset first temperature threshold value when the position state parameter and the working condition parameter meet the condition of activating a preset hill start function, so that the first clutch can output torque required by starting the vehicle to enable the vehicle to finish starting, and the first temperature threshold value is smaller than or equal to a safe temperature value of the first clutch.

Preferably, the clutch control unit reduces the temperature of a first clutch of the dual clutch below a preset first temperature threshold value, including: the clutch control unit controls a second clutch output of the dual clutch to not drive a preset torque of the vehicle so that a temperature of a first clutch of the dual clutch falls below a preset first temperature threshold.

Preferably, the clutch control unit includes: the gear control module is used for controlling the control gear of the input shaft corresponding to the second clutch to be a neutral gear; and the torque control module is used for controlling the preset torque to be output under the condition that the control gear corresponding to the second clutch is a neutral gear.

Compared with the prior art, the starting control method and system for the double clutch vehicle have the following advantages:

the hill start function is specifically preset for vehicle start use under special conditions, so that the starting of the function meets the requirements of users. When the preset hill start function is met, the temperature of the first clutch is reduced, so that the first clutch is controlled to output torque required by vehicle start, and the torque is not limited to be output due to overhigh temperature. So that the vehicle can finish starting.

Additional features and advantages of the invention will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, illustrate and explain the invention and are not to be construed as limiting the invention.

In the drawings:

fig. 1 is a flowchart of a dual clutch vehicle start control method according to an embodiment of the present invention;

FIG. 2 is a flow chart of a dual clutch vehicle launch control method prior to acquiring vehicle position and operating condition parameters in an embodiment of the present invention;

fig. 3 is a graph showing the effects of temperature change of the first clutch and the effects of change of the second clutch in neutral output torque for starting the dual clutch vehicle after the present embodiment is adopted;

fig. 4 is a block diagram of a dual clutch vehicle launch control system according to embodiment 2.

Reference numerals illustrate:

1. information acquisition unit 2, clutch control unit

21. Gear control module 22 and torque control module

3. Starting determination unit 4, function switch unit

5. Stage entry unit

Detailed Description

In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without collision.

First, a simple description will be given of a structure of a dual clutch, in which a first clutch of the dual clutch is used for outputting torques of 1 st gear, 3 rd gear, 5 th gear and 7 th gear, a second clutch of the dual clutch is used for outputting torques of 2 nd gear, 4 th gear and 6 th gear, and both have independent input shafts, namely a first input shaft corresponding to the first clutch and a second input shaft corresponding to the second clutch, and the dual clutch of a vehicle can only transmit any one of the torques to provide driving force for the vehicle, but an engine can simultaneously provide input torques for the first clutch (the first input shaft) and the second clutch (the second input shaft).

Example 1

Fig. 1 is a flowchart of a dual clutch vehicle start control method of embodiment 1, and as shown in fig. 1, the dual clutch is a wet dual clutch, and the dual clutch vehicle start control method of the embodiment includes:

s101, acquiring a vehicle position state parameter and a working condition parameter.

Wherein the location state includes: the method comprises the steps of determining the altitude of a vehicle and/or the gradient of the vehicle, wherein the altitude is the difference between the position of the vehicle and the sea level, and the gradient of the vehicle is the angle between the inclined slope of the vehicle and the horizontal plane; the operating condition includes at least one of: the gear lever gear can be a vehicle driving gear D gear, a vehicle reverse gear R gear, a vehicle neutral gear N gear, a vehicle manual gear M gear and the like, and the accelerator opening is the ratio of the change range of an accelerator pedal to the change range of a maximum accelerator pedal.

S102, when the vehicle position state parameter and the working condition parameter meet the preset activating condition of the hill start function, reducing the temperature of a first clutch in the double clutch to be below a preset first temperature threshold value, and controlling the first clutch to be capable of outputting torque required for starting the vehicle so that the vehicle can finish starting.

Wherein the activation condition of the hill start function includes at least one of:

21 The altitude of the vehicle is greater than a preset altitude threshold, wherein the altitude threshold can be 4800m, and the air inflow of the vehicle is reduced in a plateau environment, so that the attenuation of the output torque of the vehicle is more easily caused.

22 The vehicle is on a grade greater than a predetermined grade threshold, wherein the grade threshold may be 18 °.

23 The gear of the stop lever is a vehicle driving gear D or a vehicle manual gear M, and when the gear is manually operated, the vehicle can automatically switch the gear of the gearbox according to the requirement of a user.

24 The accelerator opening is greater than a preset accelerator opening threshold, wherein the accelerator opening threshold may be 80%.

25 The temperature value of the first clutch is larger than or equal to a preset second temperature threshold value, the second temperature threshold value is larger than or equal to the first temperature threshold value, and the second temperature threshold value is smaller than or equal to the safety temperature value, wherein the safety temperature value is a temperature value at which the first clutch can work normally.

The temperature of the first clutch in the double clutch is reduced below a preset first temperature threshold, and the temperature can be achieved by the following method:

and controlling a second clutch in the double clutch to output a preset torque which does not drive the vehicle so that the first clutch can output the torque required for starting the vehicle.

Here, as is known from the performance of the wet dual clutch, the first clutch and the second clutch of the dual clutch are both cooled by a coolant (typically oil), the second clutch outputs torque that does not drive the vehicle, that is, the input shaft of the second clutch (the input shaft of the dual clutch located outside) idles (does not output to the output shaft), at this time, the input shaft of the first clutch (the input shaft of the dual clutch located inside) is connected to the output shaft to continue to provide starting torque, and the input shaft of the idling second clutch can increase the flow rate of the coolant, thereby increasing the cooling effect of the first clutch.

Further preferably, the controlling the second clutch output of the dual clutch to not drive the preset torque of the vehicle may include:

a1 A step of controlling the control gear of the input shaft corresponding to the second clutch to be a neutral gear, the step being intended to prevent torque of the second clutch from being output to the vehicle to drive the vehicle; a2 And outputting the preset torque under the condition that the control gear corresponding to the second clutch is a neutral gear, so that the temperature of the first clutch is reduced below the first temperature threshold value and the torque required by starting the vehicle can be output. The second temperature threshold value in the condition of the hill start function is greater than or equal to the first temperature threshold value, and further, when the vehicle activates the hill start function, the temperature of the first clutch is higher than the first temperature threshold value, and the mode of controlling the second clutch to output the preset torque is utilized to enable the temperature of the first clutch to be reduced below the first temperature threshold value while the first clutch outputs the torque, so that the situation that the vehicle cannot start due to the fact that the output torque is limited after the temperature of the first clutch is continuously increased is avoided.

Further preferably, the condition for determining that the vehicle has completed starting includes: the temperature value of the first clutch is less than the first temperature threshold; and/or the vehicle speed exceeds a preset speed threshold.

Wherein the first temperature threshold is less than or equal to a safe temperature value of the first clutch. The preset speed threshold value can be 10km/h, or any other value which is set according to the needs, and the vehicle automatically exits after the vehicle is started.

Further preferably, after the control of the second clutch in the double clutch to output the preset torque that does not drive the vehicle driving wheels, the double clutch vehicle start control method further includes:

and when the temperature value of the first clutch of the vehicle is greater than or equal to a preset third temperature threshold, judging that the vehicle does not finish starting and exits the hill start function, wherein the third temperature threshold is less than or equal to the safety temperature value, and the third temperature threshold is greater than or equal to the second temperature threshold.

Wherein the third temperature threshold is actually the limit temperature value of the first clutch, that is, if the temperature of the first clutch is not reduced to the preset first temperature threshold value but the temperature value of the first clutch is greater than the limit value in the manner of the above embodiment of the present invention, the hill start function of the present invention is also required to be exited for protecting the first clutch.

Further preferably, as shown in fig. 2, before the step S101 of acquiring the position state parameter and the operating condition parameter of the vehicle, the dual clutch vehicle start control method further includes:

s201, responding to the selection operation of a user on the hill start function, and turning on a function switch corresponding to the hill start function.

The function switch is in a closed state, the hill start function cannot be turned on, and a user can select according to own needs by using the set function switch, so that waste of vehicle control resources is avoided. Specifically, the selection operation may be a click (may be a click of a central control display device or a click of a function key) or a rotation operation of the function switch by a user.

S202, when the position state parameter and the current working condition parameter of the vehicle meet the preset condition for preparing to enter the hill start function, controlling the vehicle to enter the preparation stage of the hill start function.

The preparation stage is configured to be a stage capable of judging whether the current position state parameter and the current working condition parameter of the vehicle meet preset activation conditions of the hill start function in real time.

In other words, the preparation stage is a precondition for activating the hill start function, and the subsequent real-time determination of whether the current position state parameter and the current working condition parameter of the vehicle meet the preset activation condition of the hill start function is performed only if the preparation stage condition is satisfied, thereby executing the steps S101 and S102.

Wherein the current operating condition further comprises: the vehicle speed is used for indicating the current running speed of the vehicle. The preset condition for preparing to enter the hill start function comprises at least one of the following conditions:

11 -the altitude at which the vehicle is located is greater than a preset altitude threshold, wherein the altitude threshold may be 4800m;

12 The gradient of the vehicle is greater than a preset gradient threshold value, and the gradient threshold value can be 18 degrees;

13 The vehicle speed is zero, the judging condition is used for determining that the vehicle is not moving and is in a static state, if the vehicle is in a moving state, the vehicle is started, and the hill start function is not required to be entered;

14 The stop lever gear is a vehicle driving gear or a vehicle manual gear; and

15 The accelerator opening is zero, which indicates that the user is not currently stepping on the accelerator pedal.

According to the embodiment, by adopting the set hill start function, when the first clutch starts under special environments (high altitude, uphill, etc.), torque required by vehicle start cannot be provided because the temperature exceeds a critical value, the special cooling mode of the embodiment can ensure that the first clutch maximally transmits the torque of an engine so as to further improve the climbing performance of the whole vehicle under high altitude, fig. 3 is an effect diagram of temperature change of the first clutch when the dual clutch vehicle starts after the embodiment and an effect diagram of change of the torque output by the second clutch under neutral gear, fig. 3 is a time, the ordinate is the temperature and the torque output, as shown in fig. 3, in the prior art, when the temperature of the first clutch exceeds a safety temperature threshold ((2) at a time point indicated by a vertical line 110 s), the output torque of the first clutch is closed so as to ensure hardware safety, at the moment, the vehicle is not started, wherein a mark [1] is a temperature change curve of the first clutch in the prior art, a mark [4] is a change of the torque output by the second clutch under the prior art, and the change of the torque output by the prior art [4] is hardly seen; when the temperature of the first clutch exceeds the safety temperature threshold, the second clutch outputs torque in neutral gear so that the temperature of the first clutch is reduced in (1) a vertical line 107.3s, the temperature of the first clutch is ensured not to exceed the safety temperature threshold, and the first clutch is ensured to transmit engine torque to the maximum extent, so that the vehicle can normally start, wherein a mark [2] is a temperature change curve of the first clutch after the embodiment of the invention is adopted, a mark [4] is a change curve of the second clutch output torque in neutral gear after the embodiment of the invention is adopted, and the second clutch output torque in neutral gear in the prior art is shown as a mark [3] and hardly outputs torque. The mode of this embodiment can discern signals such as altitude, slope, accelerator opening, speed of a motor vehicle, clutch temperature, and the like, and the second clutch transmits certain moment of torsion value, and the corresponding control gear of second clutch (actually is the gear of output shaft) is the neutral gear entirely simultaneously to utilize the second clutch to cool down first clutch, reduce first clutch temperature fast, guarantee first clutch furthest's transmission engine moment of torsion, thereby promote vehicle climbing performance.

Example 2

Fig. 4 is a block diagram of a dual clutch vehicle start control system of embodiment 2, comprising: an information acquisition unit 1 for acquiring a position state parameter and a working condition parameter of a vehicle; and the clutch control unit 2 is used for reducing the temperature of a first clutch in the double clutch to be below a preset first temperature threshold value when the position state parameter and the working condition parameter meet the preset activating condition of the hill start function, and controlling the first clutch to be capable of outputting torque required for starting the vehicle so that the vehicle finishes starting, wherein the first temperature threshold value is smaller than or equal to a safe temperature value of the first clutch.

Preferably, the clutch control unit 2 reduces the temperature of the first clutch of the dual clutch below a preset first temperature threshold value, including: the clutch control unit 2 controls the second clutch output in the double clutch not to drive the preset torque of the vehicle so that the temperature of the first clutch in the double clutch falls below a preset first temperature threshold.

Preferably, the clutch control unit 2 includes: a gear control module 21, configured to control a control gear of the input shaft corresponding to the second clutch to be a neutral gear; and a torque control module 22 for controlling the second clutch to output the preset torque, thereby increasing the flow rate of the cooling fluid inside the first clutch.

Preferably, the location status parameters include: the altitude at which the vehicle is located and/or the grade at which the vehicle is located; the operating condition includes at least one of: gear of the gear lever, opening of the accelerator and temperature value of the first clutch; and, the activation condition of the preset hill start function includes at least one of the following: the altitude of the vehicle is greater than a preset altitude threshold; the gradient of the vehicle is greater than a preset gradient threshold value; the stop lever gear is a vehicle driving gear or a vehicle manual gear; the accelerator opening is larger than a preset accelerator opening threshold; and the temperature value of the first clutch is larger than or equal to a preset second temperature threshold value, wherein the second temperature threshold value is larger than or equal to the first temperature threshold value, and the second temperature threshold value is smaller than or equal to the safety temperature value.

Preferably, the dual clutch vehicle start control system further comprises: a start determination unit 3 for determining that the vehicle has completed starting by the following conditions: the temperature value of the first clutch is less than the first temperature threshold; and/or the vehicle speed exceeds a preset speed threshold.

Preferably, before the acquiring the position state parameter and the working condition parameter of the vehicle, the dual clutch vehicle start control system further includes: a function switch unit 4 corresponding to the hill start function, for being turned on in response to a user's selection operation for the hill start function; and a stage entering unit 5 for controlling the vehicle to enter a preparation stage of the hill start function when both the position state parameter and the working condition parameter of the vehicle satisfy the preset condition for preparing to enter the hill start function, wherein the preparation stage is configured as a stage capable of judging in real time whether both the position state parameter and the working condition parameter of the vehicle satisfy the preset condition for activating the hill start function.

In comparison with the prior art, embodiment 2 has the same implementation details and technical effects as those of embodiment 1, and will not be described here again.

The dual clutch vehicle start control system comprises a processor and a memory, wherein the information acquisition unit 1, the clutch control unit 2 and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.

The processor includes a kernel, and the kernel fetches the corresponding program unit from the memory. The kernel can be provided with one or more than one kernel, and the starting control of the double clutch vehicle is realized by adjusting kernel parameters.

The memory may include volatile memory, random Access Memory (RAM), and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM), among other forms in computer readable media, the memory including at least one memory chip.

The embodiment of the invention provides a machine-readable storage medium, which stores instructions for causing a machine to execute the double clutch vehicle starting control method.

The embodiment of the invention provides a processor which is used for running a program, wherein the starting control method of the double clutch vehicle is executed when the program runs.

The present application also provides a computer program product adapted to perform a program initialized with the steps of the dual clutch vehicle launch control method of embodiment 1 when executed on a data processing device.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

In one typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

The memory may include volatile memory in a computer-readable medium, random Access Memory (RAM) and/or nonvolatile memory, etc., such as Read Only Memory (ROM) or flash RAM. Memory is an example of a computer-readable medium.

Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises an element.

The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.

Claims

1. A dual clutch vehicle start control method, characterized by comprising:

acquiring position state parameters and working condition parameters of a vehicle;

when the position state parameter and the working condition parameter meet the preset hill start function activation condition, reducing the temperature of a first clutch in the double clutch to be below a preset first temperature threshold value, and controlling the first clutch to be capable of outputting torque required for starting the vehicle so that the vehicle finishes starting, wherein the first temperature threshold value is smaller than or equal to a safe temperature value of the first clutch;

wherein the location status parameters include: the altitude at which the vehicle is located and/or the grade at which the vehicle is located;

the operating condition parameters include at least one of: gear of the gear lever, opening of the accelerator and temperature value of the first clutch;

and, the preset hill start function activation condition includes:

the altitude of the vehicle is greater than a preset altitude threshold;

the gradient of the vehicle is greater than a preset gradient threshold value;

the stop lever gear is a vehicle driving gear or a vehicle manual gear;

the accelerator opening is larger than a preset accelerator opening threshold; and

the temperature value of the first clutch is larger than or equal to a preset second temperature threshold value, wherein the second temperature threshold value is larger than or equal to the first temperature threshold value, and the second temperature threshold value is smaller than or equal to the safety temperature value.

2. The dual clutch vehicle launch control method of claim 1 wherein said reducing the temperature of a first clutch of said dual clutch below a preset first temperature threshold comprises:

and controlling the second clutch output in the double clutch to not drive the preset torque of the vehicle so that the temperature of the first clutch in the double clutch is reduced below a preset first temperature threshold.

3. The dual clutch vehicle launch control method of claim 2 wherein said controlling the second clutch of the dual clutch to output a preset torque that does not drive the vehicle comprises:

controlling a control gear corresponding to the second clutch to be a neutral gear; and

and controlling the second clutch to output the preset torque under the condition that the corresponding control gear is a neutral gear.

4. The dual clutch vehicle start control method according to claim 1, characterized in that the dual clutch vehicle start control method further comprises:

determining that the vehicle has completed starting by:

the temperature value of the first clutch is less than the first temperature threshold; and/or

The vehicle speed exceeds a preset speed threshold.

5. The dual clutch vehicle start control method according to claim 1, characterized in that before the acquisition of the position state parameter and the operating condition parameter of the vehicle, the dual clutch vehicle start control method further comprises:

responding to the selection operation of a user on the hill start function, and turning on a function switch corresponding to the hill start function; and

and when the position state parameter and the working condition parameter of the vehicle meet the preset condition for preparing to enter the hill start function, controlling the vehicle to enter a preparation stage of the hill start function, wherein the preparation stage is configured to be a stage capable of judging whether the position state parameter and the working condition parameter of the vehicle meet the preset hill start function activation condition in real time.

6. The dual clutch vehicle launch control method of claim 5 wherein said operating condition parameters further comprise: vehicle speed;

and, the preset condition for preparing to enter the hill start function includes at least one of the following:

the altitude of the vehicle is greater than a preset altitude threshold;

the gradient of the vehicle is greater than a preset gradient threshold value;

the vehicle speed is zero;

the stop lever gear is a vehicle driving gear or a vehicle manual gear; and

the throttle opening is zero.

7. A dual clutch vehicle start control system controlled by the dual clutch vehicle start control method according to any one of claims 1 to 6, characterized in that the dual clutch vehicle start control system comprises:

the information acquisition unit is used for acquiring the position state parameters and the working condition parameters of the vehicle; and

and the clutch control unit is used for reducing the temperature of a first clutch in the double clutch to be below a preset first temperature threshold value when the position state parameter and the working condition parameter meet the condition of activating a preset hill start function, and controlling the first clutch to be capable of outputting torque required by starting the vehicle so that the vehicle finishes starting, wherein the first temperature threshold value is smaller than or equal to a safe temperature value of the first clutch.

8. The dual clutch vehicle launch control system of claim 7, wherein the clutch control unit reducing the temperature of a first clutch of the dual clutch below a preset first temperature threshold comprises:

the clutch control unit controls a second clutch output of the dual clutch to not drive a preset torque of the vehicle so that a temperature of a first clutch of the dual clutch falls below a preset first temperature threshold.

9. The dual clutch vehicle launch control system of claim 7, wherein the clutch control unit comprises:

the gear control module is used for controlling the control gear of the input shaft corresponding to the second clutch to be a neutral gear; and

and the torque control module is used for outputting preset torque under the condition that the control gear corresponding to the second clutch is a neutral gear.