CN115031017A - Transfer case 4L mode switching control method and device and vehicle - Google Patents

Transfer case 4L mode switching control method and device and vehicle Download PDF

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Publication number
CN115031017A
CN115031017A CN202111398524.7A CN202111398524A CN115031017A CN 115031017 A CN115031017 A CN 115031017A CN 202111398524 A CN202111398524 A CN 202111398524A CN 115031017 A CN115031017 A CN 115031017A
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China
Prior art keywords
vehicle
mode
gear
control method
preset condition
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CN202111398524.7A
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CN115031017B (en
Inventor
黄旭宁
陈江峰
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Great Wall Motor Co Ltd
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Great Wall Motor Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
    • F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
    • F16H61/0204—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/34—Locking or disabling mechanisms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Transmission Device (AREA)

Abstract

The invention provides a transfer case 4L mode switching control method, a transfer case 4L mode switching control device and a vehicle, and belongs to the technical field of vehicles, wherein the control method comprises the following steps: acquiring current information of a vehicle, and judging whether the current information meets a first preset condition; if the current information meets the first preset condition, the vehicle is confirmed to be on a slope; detecting whether a 4L mode switching signal is received when the vehicle is on a slope; and if the switching signal of the 4L mode is received, controlling the vehicle to enter a braking mode so as to prevent the vehicle from rolling. According to the transfer case 4L mode switching control method, manual operation of a driver is not needed for braking, switching operation is simplified, the vehicle is prevented from sliding down a slope by adopting an automatic control vehicle braking mode, driving dangerousness is reduced, and vehicle safety accidents are reduced.

Description

Transfer case 4L mode switching control method and device and vehicle
Technical Field
The invention belongs to the technical field of vehicles, and particularly relates to a transfer case 4L mode switching control method and device and a vehicle.
Background
The transfer case (TOD, Torque-On-Demand) is an important component of the automobile power system, provides a four-wheel drive scheme for the longitudinally arranged chassis of the engine, distributes the power Torque of a power output system according to the requirement, and adopts a group of electric control multi-disc clutches to replace a gear type central differential.
In the transfer case, the power output by the speed changer is directly output to a rear axle transmission shaft through a high-low speed planetary gear set, the rear axle transmission shaft is simultaneously connected with a group of multi-plate clutches, the input end of a front axle is also connected with a group of multi-plate clutches, when the power is not applied, the multi-plate clutches are unloaded and respectively rotate, at the moment, the rear drive is a 2H state, when the power is applied and fully loaded, the multi-plate clutches are attracted and pressed by an electromagnetic coil, the power is transmitted to the front axle through the meshed multi-plate clutches, at the moment, the four-drive is a 4H state, and if the transfer case is a low speed gear, the 4L state is realized. When the front axle and the rear axle have the requirement of the rotation speed difference, the transfer case control unit controls the on-off of the electromagnetic coil so as to control the combination degree of the multi-plate clutch, the electrification is in a duty ratio form, the speed difference between the shafts of the front axle and the rear axle is realized by the slipping semi-linkage of the multi-plate clutch from 0 to 100 percent, and the limited slip of a slipping axle can be realized at the same time, and all the limited slip is handed to the electromagnetic coil for operation. The transfer case control unit monitors a speed signal of an output shaft of the transmission and a wheel speed signal of wheels, judges the combination degree of the electromagnetic coil and the multi-plate clutch and realizes four-wheel drive control.
When the transfer case mode enters a 4L mode, a friction plate group is pressed tightly by a roller-cam disc mechanism in the transfer case to control the torque output of a front axle, a front axle and a rear axle are locked in the 4L mode and are approximately rigidly connected, the output torque of the transfer case is amplified, as a 4L gear shifting structure of the transfer case is a shifting fork and gear sleeve synchronizer-free structure, straight teeth are adopted for meshing, N-gear output shafts of an AT transmission have different output rotating speeds and dragging torques AT different temperatures and engine rotating speeds, and top teeth with different degrees exist in the switching process, so the transmission must be in N gears, and the output shafts of the transmission can freely rotate to smoothly complete the switching.
Currently, the transfer 4L mode shift condition is "1, and the 4L mode switch is pressed. 2. The transmission is in neutral. 3. The vehicle is stopped or the speed of the vehicle is less than the preset speed. "this shift condition can be normally operated on a flat road surface, but when the 4L mode is entered on a slope, the switching operation is cumbersome, which easily causes the vehicle to roll down the slope, and the driving risk is high.
Disclosure of Invention
The invention aims to provide a transfer case 4L mode switching control method, a transfer case 4L mode switching control device and a vehicle, and aims to solve the technical problems that the transfer case 4L mode shifting conditions are relatively complicated in switching operation on a slope, the vehicle is easy to slide down the slope, and the driving risk is high.
In order to achieve the purpose, the invention adopts the technical scheme that:
in a first aspect, the present invention provides a transfer case 4L mode switching control method, including:
acquiring current information of a vehicle, and judging whether the current information meets a first preset condition;
if the current information meets the first preset condition, the vehicle is confirmed to be on a slope;
detecting whether a 4L mode switching signal is received when the vehicle is on a slope;
and if the switching signal of the 4L mode is received, controlling the vehicle to enter a braking mode so as to prevent the vehicle from rolling.
In one possible implementation, the current information of the vehicle includes vehicle speed information, gear information, vehicle gradient information, seat belt information, and throttle information.
In one possible implementation, the first preset condition includes that the vehicle gradient is greater than a preset gradient.
In one possible implementation manner, if the 4L mode switching signal is received, controlling the vehicle to enter a braking mode includes:
and if the switching signal of the 4L mode is received, starting an electronic parking system of the vehicle, and controlling the gear to be switched from the current gear to the parking gear.
In a possible implementation manner, if the 4L mode switching signal is received, starting an electronic parking system of the vehicle, and controlling a shift position to be switched from a current shift position to a parking position includes:
when the switching signal of the 4L mode is received, sending a starting signal to an electronic parking system to control the electronic parking system to brake wheels;
and also,
when the switching signal of the 4L mode is received, a gear shifting signal is sent to the transmission, and the transmission is controlled to be switched from the current gear to the parking gear.
In one possible implementation manner, the control method further includes:
and when the current information meets a second preset condition, driving the vehicle to run.
In a possible implementation manner, when the current information satisfies a second preset condition, driving the vehicle to run includes:
and when the parking gear is switched to the forward gear, the opening degree of the accelerator is smaller than the preset opening degree, and the safety belt is in a locked state, controlling the vehicle to exit the electronic parking system, and driving the vehicle to run.
In one possible implementation manner, the control method further includes:
and when the vehicle enters the 4L mode, controlling the vehicle to display preset reminding information.
In one possible implementation manner, the control method further includes:
if the current information does not meet a first preset condition, determining that the vehicle is not on a ramp, and judging whether the current information meets a third preset condition;
and if the current information meets the third preset condition, switching to a 4L mode.
In a possible implementation manner, the third preset condition includes:
the 4L mode switch is in an OFF gear, the gear is in a neutral gear, and the vehicle is stopped or the vehicle speed is less than the preset vehicle speed.
The transfer case 4L mode switching control method provided by the invention at least has the following technical effects: compared with the prior art, the transfer case 4L mode switching control method provided by the invention can judge whether the vehicle is on a slope or not by acquiring the current information of the vehicle and comparing the current information with the first preset condition, detects whether a switching signal of the 4L mode is received or not when the vehicle is confirmed to be on the slope, and controls the vehicle to automatically enter a braking mode if the switching signal of the 4L mode is received, so that the vehicle is braked without manual operation of a driver, the switching operation is simplified, the vehicle is prevented from sliding down the slope by adopting a mode of automatically controlling the vehicle brake, the driving risk is reduced, and the vehicle safety accidents are reduced.
In a second aspect, the present invention also provides a transfer case 4L mode switching control device, including:
the information acquisition module is used for acquiring the current information of the vehicle and judging whether the current information meets a first preset condition;
the confirming module is used for confirming whether the vehicle is on a slope or not according to the first preset condition;
the detection module is used for detecting whether a switching signal of a 4L mode is received or not when the vehicle is on a slope; and
and the switching module is used for controlling the vehicle to enter a braking mode if the switching signal of the 4L mode is received.
The transfer case 4L mode switching control device provided by the invention has the same principle and the same technical effect as the transfer case 4L mode switching control method, and is not described again.
In a third aspect, the invention also provides a vehicle including the transfer 4L mode switching control apparatus according to the above implementation manner.
The principle of the vehicle and the transfer case 4L mode switching control device provided by the invention is the same, the technical effect is the same, and the details are not repeated.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a flowchart of a transfer 4L mode switching control method according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a transfer case 4L mode switching control device according to an embodiment of the present invention.
Description of reference numerals:
100. transfer case 4L mode switching control device 110 and information acquisition module
120. Confirmation module 130 and detection module
140. Switching module
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It is to be noted that, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
Referring to fig. 1 and fig. 2 together, a method, an apparatus and a vehicle for controlling the switching of the transfer case 4L mode according to an embodiment of the present invention will be described.
Referring to fig. 1, an embodiment of the present invention provides a method for controlling 4L mode switching of a transfer case, including:
s100, obtaining current information of the vehicle, and judging whether the current information meets a first preset condition.
It can be understood that different first preset conditions can be set through different current information, whether the vehicle is on a slope or not can be judged according to whether the comparison current information meets the set first preset conditions, and the vehicle is controlled to enter different 4L mode switching modes according to whether the vehicle is on the slope or not.
S200, if the current information meets a first preset condition, the vehicle is confirmed to be on the slope.
And S300, when the vehicle is on a slope, detecting whether a switching signal of the 4L mode is received.
In the process, when the vehicle is on a slope, a pressing signal of the 4L mode switch can be sent to an instrument panel, a display screen, a buzzer, a light device and the like of the vehicle, so as to remind a driver that the vehicle is on the slope and the 4L mode switching can be carried out. Then, a feedback signal of the 4L mode switch is received, whether the feedback signal is a switching signal is determined, and whether the 4L mode switch is pressed is determined.
And S400, if the switching signal of the 4L mode is received, controlling the vehicle to enter a braking mode to prevent the vehicle from rolling.
If the 4L mode switching signal can be received, the condition that the vehicle is in the 4L mode switching state on the slope is confirmed, the vehicle can be controlled to enter the braking mode, the vehicle can be prevented from sliding when the 4L mode of the vehicle is switched on the slope, and the manual operation steps are simplified.
The transfer case 4L mode switching control method provided by the embodiment of the invention at least has the following technical effects: compared with the prior art, the transfer case 4L mode switching control method provided by the embodiment of the invention can judge whether the vehicle is on a slope or not by acquiring the current information of the vehicle and comparing the current information with the first preset condition, detects whether the switching signal of the 4L mode is received or not when the vehicle is confirmed to be on the slope, and controls the vehicle to automatically enter the braking mode without manual operation of a driver for braking if the switching signal of the 4L mode is received, so that the switching operation is simplified, the vehicle is prevented from sliding down the slope by adopting a mode of automatically controlling the vehicle to brake, the driving risk is reduced, and the vehicle safety accident is reduced.
The following is an example of the current information of the vehicle.
In some possible embodiments, the current information of the vehicle includes vehicle speed information, gear information, vehicle grade information, seat belt information, throttle information. Specifically, the vehicle speed information is the speed of the vehicle, the gear information is the gear in neutral, forward, park, etc., the vehicle gradient information is the inclined angle between the vehicle and the horizontal plane, the safety belt information is whether the safety belt is locked, and the accelerator information is the opening of the accelerator.
The vehicle speed information, the gear information, the vehicle gradient information, the safety belt information and the accelerator information can reflect the current driving state of the vehicle, and different adaptive operations of the vehicle can be adaptively controlled according to the current information.
Based on the current information, in one particular embodiment, the first predetermined condition includes the vehicle grade being greater than a predetermined grade. In this embodiment, it is determined whether the gradient of the vehicle in the current information is greater than a preset gradient, and if the gradient of the vehicle is greater than the preset gradient, it is determined that the vehicle is on a slope. The preset gradient is determined according to vehicle performance, and for example, the preset gradient may be 10 °%, 15 °%, 20 °% or the like, without limitation. Whether the vehicle is on the slope is determined by determining whether the gradient of the vehicle is greater than a preset gradient.
Of course, in other possible embodiments, the first preset condition may also be to determine whether the vehicle speed of the vehicle is less than the preset vehicle speed, or determine whether the gear of the vehicle is in the preset gear, and the like, without being limited thereto.
In some possible embodiments, if the 4L mode switching signal is received, controlling the vehicle to enter the braking mode includes: and if a switching signal of the 4L mode is received, starting an electronic parking system of the vehicle, and controlling the gear to be switched from the current gear to the parking gear. Particularly, the mode of controlling the vehicle to enter the braking mode adopts the dual braking operation of controlling the electronic parking system to brake and controlling the gear to park, so that the vehicle can be braked more quickly and accurately, the vehicle is prevented from sliding to a greater extent, and the driving safety is improved.
Based on the electronic parking system and the gear information, in a specific embodiment, if a 4L mode switching signal is received, the electronic parking system of the vehicle is started, and the gear is controlled to be switched from the current gear to the parking gear, including: when a switching signal of a 4L mode is received, a starting signal is sent to the electronic parking system, and the electronic parking system is controlled to brake wheels; and when receiving a switching signal of the 4L mode, sending a gear shifting signal to the transmission, and controlling the transmission to be switched from the current gear to the parking gear.
In the present embodiment, when the 4L mode switching signal is received, the start signal and the shift signal are synchronously transmitted to the electronic parking system and the transmission, respectively, and in this process, the signals may be directly transmitted or indirectly transmitted. The current gear may specifically be neutral, forward, etc.
Of course, in other possible embodiments, the receiving of the 4L mode switching signal, the sending of the start signal to the electronic parking system, and the sending of the shift signal to the transmission may be linked to reduce the control time, and is not limited thereto.
In some possible embodiments, the control method further includes: and when the current information meets a second preset condition, driving the vehicle to run. Specifically, when the vehicle enters the 4L mode on a slope, whether the vehicle continues to run needs to be judged, whether the current information meets a second preset condition needs to be judged, and when the second preset condition is met, the vehicle can be driven to run, otherwise, the vehicle is not driven to run.
Based on the second preset condition, in a specific embodiment, when the current information satisfies the second preset condition, the driving the vehicle to run includes: and when the parking gear is switched to a forward gear, the opening degree of the accelerator is smaller than the preset opening degree, and the safety belt is in a locked state, controlling the vehicle to exit the electronic parking system, and driving the vehicle to run.
In this embodiment, the second preset condition is specifically that the parking gear is switched to the forward gear, the opening degree of the accelerator is smaller than the preset opening degree, and the safety belt is in a locked state, that is, three signals, i.e., whether the current gear is the forward gear, whether the accelerator is stepped on, and whether the safety belt is locked are detected, and if the three conditions are simultaneously met, the vehicle is controlled to exit the electronic parking system, so as to drive the vehicle to run. So set up, when the driver steps on accelerator pedal, can the direct drive vehicle travel, need not release electron parking system alone, can prevent that the vehicle from rolling away.
In some possible embodiments, the control method further comprises: and when the vehicle enters the 4L mode, controlling the vehicle to display preset reminding information. Specifically, the preset reminding information can be displayed through display accessories such as an instrument panel of the vehicle and a display screen of the vehicle. When the vehicle enters the 4L mode, a prompt signal is sent to the display accessory, and the display accessory is controlled to display preset reminding information. Through the display of the preset reminding information, the function of reminding a driver of cautious driving can be played.
For example, when the vehicle enters the 4L mode, the preset reminding message may be text, for example, the vehicle enters the 4L mode on a slope, please carefully control the vehicle. Of course, the preset reminding information may also be other text content, graphic content, and the like, and is not limited thereto.
Exemplarily, when the braking operation is completed and the vehicle needs to continue to run, a prompt signal can be sent to display accessories such as an instrument panel of the vehicle and a display screen of the vehicle, so that the display accessories display preset reminding information, wherein the preset reminding information specifically includes: the vehicle is braked and can be started by stepping on the accelerator.
In addition, when the vehicle enters the 4L mode, the vehicle can be controlled to remind the driver of cautious driving and knowing the current driving state in the modes of sound, light and the like. For example, in the process of driving the vehicle to continue to run, a signal can be sent to the buzzer to enable the buzzer to send out a prompt signal, so that the driver can be reminded to perform operations of gear shifting, stepping on an accelerator and locking a safety belt, and starting on a slope is realized.
In some possible embodiments, the control method further includes: if the current information does not meet the first preset condition, determining that the vehicle is not on the ramp, and judging whether the current information meets a third preset condition; and if the current information meets a third preset condition, switching to a 4L mode.
Specifically, if the current information does not satisfy the first preset condition, it can be confirmed that the vehicle is not on a slope and is not suitable for entering the 4L mode in the slope state. At this time, it is necessary to determine whether the current information satisfies a third preset condition, and if the third preset condition is satisfied, the 4L mode in the ordinary level road state may be switched to, and if the third preset condition is not satisfied, the 4L mode is rejected to be switched to and exited. The third preset condition may be determined based on actual performance of the vehicle.
Based on the third preset condition, in a specific embodiment, the third preset condition includes: the 4L mode switch is in an OFF gear, the gear is in a neutral gear, and the vehicle is stopped or the vehicle speed is less than the preset vehicle speed. In the present embodiment, the third preset condition includes three conditions that need to be satisfied at the same time, and if any one of the conditions that is not satisfied exists, the 4L mode cannot be switched to. The preset vehicle speed can be 3km/h, 5km/h, 7km/h and the like, and is not limited.
Referring to fig. 2, based on the same inventive concept, an embodiment of the present invention further provides a transfer case 4L mode switching control apparatus 100, including: the information acquiring module 110 is configured to acquire current information of a vehicle and determine whether the current information meets a first preset condition; the confirming module 120 is used for confirming whether the vehicle is on a slope or not according to a first preset condition; a detection module 130, configured to detect whether a 4L mode switching signal is received when the vehicle is on a slope; and a switching module 140 for controlling the vehicle to enter a braking mode if a switching signal of the 4L mode is received.
It should be noted that the information obtaining module 110, the confirming module 120, the detecting module 130 and the switching module 140 in the transfer 4L mode switching control apparatus 100 according to the embodiment of the present invention are used for implementing the same functions as those in the above control method, and are not described herein again.
The division of the modules in the embodiment of the present invention is illustrative, and is only a logic function division, and there may be another division manner in actual implementation. The various modules in the above-described apparatus may be implemented in whole or in part by software, hardware, and combinations thereof. The modules can be embedded in a hardware form or independent of a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
The transfer case 4L mode switching control apparatus 100 provided in the embodiment of the present invention has the same principle and the same technical effect as the transfer case 4L mode switching control method, and is not described herein again.
Based on the same inventive concept, the embodiment of the present invention also provides a vehicle including the transfer case 4L mode switching control device 100 as described in the above embodiment. It will be appreciated that the vehicle may also include other conventional structures for performing its driving functions.
The principle of the vehicle provided by the embodiment of the invention is the same as that of the transfer case 4L mode switching control device 100, and the technical effects are the same, which are not described herein again.
It is to be understood that, in the foregoing embodiments, various parts may be freely combined or deleted to form different combination embodiments, and details of each combination embodiment are not described herein again, and after this description, it can be considered that each combination embodiment has been described in the present specification, and can support different combination embodiments.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (12)

1. A transfer case 4L mode switching control method is characterized by comprising the following steps:
acquiring current information of a vehicle, and judging whether the current information meets a first preset condition;
if the current information meets the first preset condition, the vehicle is confirmed to be on a slope;
detecting whether a 4L mode switching signal is received when the vehicle is on a slope;
and if the switching signal of the 4L mode is received, controlling the vehicle to enter a braking mode so as to prevent the vehicle from rolling.
2. The control method according to claim 1,
the current information of the vehicle comprises vehicle speed information, gear information, vehicle gradient information, safety belt information and accelerator information.
3. The control method according to claim 1,
the first preset condition comprises that the gradient of the vehicle is greater than a preset gradient.
4. The control method according to claim 1,
if the switching signal of the 4L mode is received, controlling the vehicle to enter a braking mode, wherein the method comprises the following steps:
and if the switching signal of the 4L mode is received, starting an electronic parking system of the vehicle, and controlling the gear to be switched from the current gear to the parking gear.
5. The control method of claim 4, wherein if the 4L mode switching signal is received, activating an electronic parking system of the vehicle and controlling a gear to be switched from a current gear to a parking gear comprises:
when the switching signal of the 4L mode is received, sending a starting signal to an electronic parking system to control the electronic parking system to brake wheels;
and the number of the first and second electrodes,
when the switching signal of the 4L mode is received, a gear shifting signal is sent to the transmission, and the transmission is controlled to be switched from the current gear to the parking gear.
6. The control method according to claim 1, characterized by further comprising:
and when the current information meets a second preset condition, driving the vehicle to run.
7. The control method according to claim 6,
when the current information meets a second preset condition, driving the vehicle to run, including:
and when the parking gear is switched to the forward gear, the opening degree of the accelerator is smaller than the preset opening degree, and the safety belt is in a locked state, controlling the vehicle to exit the electronic parking system, and driving the vehicle to run.
8. The control method according to claim 1, characterized by further comprising:
and when the vehicle enters the 4L mode, controlling the vehicle to display preset reminding information.
9. The control method according to claim 1, characterized by further comprising:
if the current information does not meet a first preset condition, determining that the vehicle is not on a ramp, and judging whether the current information meets a third preset condition;
and if the current information meets the third preset condition, switching to a 4L mode.
10. The control method according to claim 9, characterized in that the third preset condition includes:
the 4L mode switch is in an OFF gear, the gear is in a neutral gear, and the vehicle is stopped or the vehicle speed is less than the preset vehicle speed.
11. Transfer case 4L mode switching controlling means characterized by, includes:
the information acquisition module is used for acquiring the current information of the vehicle and judging whether the current information meets a first preset condition;
the confirming module is used for confirming whether the vehicle is on a slope or not according to the first preset condition;
the detection module is used for detecting whether a switching signal of a 4L mode is received or not when the vehicle is on a slope; and
and the switching module is used for controlling the vehicle to enter a braking mode if the switching signal of the 4L mode is received.
12. A vehicle characterized by comprising the transfer 4L mode switching control apparatus according to claim 11.
CN202111398524.7A 2021-11-19 2021-11-19 Transfer case 4L mode switching control method and device and vehicle Active CN115031017B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106402371A (en) * 2015-07-28 2017-02-15 长城汽车股份有限公司 Mode switching control method, device and system of transfer case
CN106931159A (en) * 2015-12-29 2017-07-07 长城汽车股份有限公司 A kind of mode switch control method of transfer gear, apparatus and system
CN107351820A (en) * 2017-06-29 2017-11-17 威马智慧出行科技（上海）有限公司 A kind of automatic releasing control method of vehicle electronic parking
CN109367534A (en) * 2018-10-15 2019-02-22 北京汽车研究总院有限公司 A kind of electronic parking control method and device
CN110588371A (en) * 2019-10-15 2019-12-20 国机智骏科技有限公司 Vehicle slope-sliding prevention control method and device and electric automobile

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106402371A (en) * 2015-07-28 2017-02-15 长城汽车股份有限公司 Mode switching control method, device and system of transfer case
CN106931159A (en) * 2015-12-29 2017-07-07 长城汽车股份有限公司 A kind of mode switch control method of transfer gear, apparatus and system
CN107351820A (en) * 2017-06-29 2017-11-17 威马智慧出行科技（上海）有限公司 A kind of automatic releasing control method of vehicle electronic parking
CN109367534A (en) * 2018-10-15 2019-02-22 北京汽车研究总院有限公司 A kind of electronic parking control method and device
CN110588371A (en) * 2019-10-15 2019-12-20 国机智骏科技有限公司 Vehicle slope-sliding prevention control method and device and electric automobile

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