CN113199938B - Locking method and device and vehicle - Google Patents
Locking method and device and vehicle Download PDFInfo
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- CN113199938B CN113199938B CN202110464336.3A CN202110464336A CN113199938B CN 113199938 B CN113199938 B CN 113199938B CN 202110464336 A CN202110464336 A CN 202110464336A CN 113199938 B CN113199938 B CN 113199938B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
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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
- F16H48/00—Differential gearings
- F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
Abstract
The application provides a locking method, a locking device and a vehicle, wherein the method comprises the following steps: acquiring a locking signal; acquiring parameter information of the vehicle according to the locking signal; and under the condition that the parameter information meets the preset locking condition, controlling two driving wheels to be in a parking braking state, and sequentially releasing the parking braking states of the two driving wheels according to a first preset time interval so as to realize the locking of the electronic differential lock of the vehicle. The service life of the electronic differential lock and other transmission components can be prolonged.
Description
Technical Field
The application relates to the technical field of automobiles, in particular to a locking method, a locking device and a vehicle.
Background
The electromagnetic coil controlled electronic differential lock consists of an electronic differential lock control mechanism, an electronic differential lock controller, an electronic differential lock and the like, and the left half shaft and the right half shaft are locked through the cooperation of all the parts. The electronic differential lock controlled by the electromagnetic coil can be locked only by utilizing the rotation speed difference of the left wheel and the right wheel, and when a vehicle is on a good high-attachment road surface, the vehicle needs to simulate to run around an S-shaped pile in the left-right driving direction to realize the rotation speed difference of the left wheel and the right wheel, but the service lives of the electronic differential lock and other transmission components can be shortened.
Disclosure of Invention
The embodiment of the application provides a locking method, a locking device and a vehicle, and aims to solve the problem that the service life of an electronic differential lock and other transmission parts is shortened.
In a first aspect, an embodiment of the present application provides a locking method, including:
acquiring a locking signal;
acquiring parameter information of the vehicle according to the locking signal;
and under the condition that the parameter information meets the preset locking condition, controlling the two driving wheels to be in a parking braking state, and sequentially releasing the parking braking states of the two driving wheels according to a first preset time interval so as to realize the locking of the electronic differential lock of the vehicle.
In a second aspect, an embodiment of the present application further provides a locking device, including:
the first acquisition module is used for acquiring a locking signal;
the second acquisition module is used for acquiring the parameter information of the vehicle according to the locking signal;
and the first control module is used for controlling the two driving wheels to be in the parking braking state under the condition that the parameter information accords with the preset locking condition, and sequentially releasing the parking braking states of the two driving wheels according to a first preset time interval so as to realize the locking of the electronic differential lock of the vehicle.
In a third aspect, the present application further provides a vehicle including the locking device disclosed in the second aspect of the embodiment of the present application.
In the embodiment of the application, under the condition that the parameter information meets the preset locking condition, the two driving wheels are controlled to be in the parking braking state, and the parking braking states of the two driving wheels are sequentially released according to a first preset time interval, so that the electronic differential lock of the vehicle is locked. Therefore, the influence of the simulation of running around the S-shaped piles in the left-right driving direction on the service life of the electronic differential lock and other transmission components can be avoided, and the service life of the electronic differential lock and other transmission components can be prolonged.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic flow chart of a locking method provided in an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a manual assist system of an electronic differential lock provided in an embodiment of the present application;
FIG. 3 is a schematic structural diagram of a locking device provided in an embodiment of the present application;
fig. 4 is a second schematic structural diagram of a locking device according to an embodiment of the present application;
FIG. 5 is a third schematic structural diagram of a locking device according to an embodiment of the present disclosure;
fig. 6 is a fourth schematic structural diagram of a locking device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a schematic flow chart of a locking method according to an embodiment of the present application, as shown in fig. 1, including the following steps:
and step 101, acquiring a locking signal.
The locking signal may be a preset signal for activating the electronic differential lock, for example: in the vehicle, the locking signal can be preset to be a long-time pressing electronic differential lock switch for two seconds or three seconds or a continuous pressing electronic differential lock switch for two times and the like, and a driver can input the locking signal through the preset action before the vehicle enters the extreme off-road working condition so as to improve the trapped-escaping capability of the vehicle under the extreme harsh ultra-strong off-road working condition.
And 102, acquiring parameter information of the vehicle according to the locking signal.
The parameter information may be obtained according to a CAN (Controller Area Network) bus in the vehicle, for example: an electronic differential lock controller, an electronic parking system controller, a transfer case controller, an instrument controller and the like of the vehicle CAN be connected through a CAN bus, and the transfer case gear information of the vehicle, the vehicle speed information of the vehicle and the like CAN be obtained according to the CAN bus.
And 103, controlling the two driving wheels to be in a parking braking state under the condition that the parameter information meets the preset locking condition, and sequentially releasing the parking braking states of the two driving wheels according to a first preset time interval so as to realize the locking of the electronic differential lock of the vehicle.
The first predetermined time interval may be an empirical value, such as: when the parameter information of the vehicle meets the preset locking condition during the running process of the vehicle, the wheel speed difference of the two driving wheels is increased to a preset value meeting the locking condition, and the time for releasing the parking brake of the two driving wheels to reach the preset value can be judged through experience, for example, 5 seconds, the 5 seconds are set as the first preset time interval, and the first preset time interval is calculated by taking the time of the wheel with the parking brake released firstly in the two driving wheels as the starting time. Therefore, the parking braking states of the two driving wheels are sequentially released at intervals, so that the wheel speed difference of the two driving wheels reaches the wheel speed difference required by the locking of the electronic differential lock, and the locking of the electronic differential lock is realized.
In addition, the release of the parking brake state of the driven wheels may indicate that the parking brake state of the wheels reaches a completely released state, and in the sequential release of the parking brake states of the two driven wheels, the release of the wheels whose parking brake state is released later may be performed such that the wheels are slowly released within a time period corresponding to the first preset time interval and reach a completely released state after the first preset time interval.
In the embodiment of the application, under the condition that the parameter information meets the preset locking condition, the two driving wheels are controlled to be in the parking braking state, and the parking braking states of the two driving wheels are sequentially released according to a first preset time interval, so that the electronic differential lock of the vehicle is locked. Therefore, the influence of the simulation of running around the S-shaped piles in the left-right driving direction on the service life of the electronic differential lock and other transmission components can be avoided, and the service life of the electronic differential lock and other transmission components can be prolonged.
Optionally, the method may further comprise the steps of:
and under the condition that the parameter information meets the preset locking condition, controlling the electronic differential lock to enter a pre-locking state, so that the electronic differential lock realizes locking under the condition that the wheel speed difference of the two driving wheels reaches a preset value.
The electronic differential lock of the front axle and the rear axle of the existing vehicle is usually in a solenoid control structure, the electronic differential lock controlled by the solenoid is composed of an electronic differential lock control mechanism, an electronic differential lock controller, an electronic differential lock and the like, and the locking of a left half shaft and a right half shaft is realized through the matching of all parts. Therefore, before the electronic differential lock is successfully locked, power needs to be supplied to an electromagnetic coil of the electronic differential lock, the pre-locking state can indicate that the electromagnetic coil power supply of the electronic differential lock is switched on under the condition that the parameter information meets the preset locking condition, the electronic differential lock can be locked when the wheel speed difference of the two driving wheels corresponding to the electronic differential lock in the pre-locking state reaches the wheel speed difference required by locking, and the preset value can be set as the wheel speed difference required by locking of the electronic differential lock.
In this embodiment, the electronic differential lock is controlled to enter the pre-locking state when the parameter information meets a preset locking condition, and the electronic differential lock can achieve locking when the wheel speed difference between the two driving wheels reaches a preset value.
Optionally, the method may further comprise the steps of:
under the condition that the parameter information meets a preset locking condition, acquiring the wheel speeds of the two driving wheels before a second preset time interval issued by the locking signal;
in step 103, controlling both the two driving wheels to be in the parking braking state under the condition that the parameter information meets the preset locking condition, and sequentially releasing the parking braking states of the two driving wheels according to a first preset time interval to realize locking of the electronic differential lock, which may specifically include:
determining a first target wheel and a second target wheel according to the wheel speeds, and controlling the first target wheel and the second target wheel to be in a parking braking state, wherein the first target wheel is the wheel with the larger wheel speed of the two driving wheels, and the second target wheel is the wheel with the smaller wheel speed of the two driving wheels;
releasing the parking brake state of the first target wheel in case of detecting a brake signal;
releasing the parking brake state of the second target wheel after the first preset time interval.
Specifically, before the second preset time interval that the locking signal was given down, the vehicle was in the normal course of traveling, according to the comparison of the fast size of the wheel of above-mentioned two driving wheels, can judge the height of the coefficient of adhesion of above-mentioned two driving wheels, and the higher wheel coefficient of adhesion of the wheel speed is low, and the lower wheel coefficient of adhesion of the wheel speed is high. The first target wheel may correspond to a wheel having a low adhesion coefficient, the second target wheel may correspond to a wheel having a high adhesion coefficient, and the parking brake state of the first target wheel may be released first, and the parking brake state of the second target wheel may be released after the first predetermined time interval, where the first predetermined time interval may start at a time when the parking brake state of the first target wheel is released, so that a wheel speed difference between the first target wheel and the second target wheel may be further increased, a wheel speed difference required for the electronic differential lock to lock may be achieved, and the electronic differential lock may be locked.
In this embodiment, under the condition that a braking signal is detected, the parking braking state of the first target wheel is released first, the parking braking state of the second target wheel is released after the first preset time interval, the wheel speed difference between the first target wheel and the second target wheel is increased and reaches the wheel speed difference required by the electronic differential lock to lock the first target wheel and the second target wheel by successively releasing the parking braking states of the first target wheel and the second target wheel with large wheel speeds and the second target wheel with small wheel speeds in the normal running process, the locking of the electronic differential lock is realized, the electronic differential lock can be locked in advance before the vehicle enters the extreme off-road working condition, and therefore the trapped-escaping capability of the vehicle in the ultra-strong off-road working condition is improved.
Optionally, before releasing the parking brake state of the first target wheel in case of detecting the brake signal, the method may further include the steps of:
acquiring the output torque of an engine;
and judging whether the brake signal exists or not according to the output torque.
Specifically, if the driver of the vehicle steps on the accelerator when the transmission is in a forward gear or a reverse gear, the output torque of the engine changes correspondingly, and whether the braking signal exists can be judged through the change of the output torque.
In this embodiment, whether the braking signal exists is determined by the output torque, and the parking braking states of the two driving wheels can be successively released when the vehicle starts, so that the wheel speed difference of the two driving wheels after the vehicle starts can reach the wheel speed difference required by the electronic differential lock for locking.
Optionally, the parameter information includes:
the vehicle speed of the vehicle, the wheel speed difference of the two drive wheels and the transfer gear of the vehicle.
Specifically, the condition that the parameter information meets the preset locking condition is understood as that the vehicle speed of the vehicle, the wheel speed difference of the two driving wheels and the transfer gear of the vehicle meet the preset locking condition at the same time, for example: the preset locking condition may specifically be that a vehicle speed is less than 5km/H, a wheel speed difference is less than 50r/min, and a transfer gear is in a 4H (Four-wheel drive High) gear or a 4L (Four-wheel drive Low) gear, and if the parameter information meets the preset locking condition, the electronic differential lock may enter the pre-locking state; and if at least one item of the parameter information does not meet the preset locking condition, the electronic differential lock refuses to lock so as to keep an unlocking state.
In this embodiment, when the vehicle speed of the vehicle, the wheel speed difference between the two driving wheels, and the gear of the transfer case of the vehicle all meet the preset locking condition, it may be determined that the driving state of the vehicle meets the precondition for locking the electronic differential lock, so that the electronic differential lock may be directly locked when the wheel speed difference between the two driving wheels reaches the preset value.
The various optional implementations described in the embodiments of the present application may be implemented in combination with each other or implemented separately without conflicting with each other, and the embodiments of the present application are not limited to this.
For ease of understanding, specific examples are as follows:
referring to fig. 2, fig. 2 is a schematic structural diagram of an electronic differential lock manual assistance system provided in the embodiment of the present application. As shown in fig. 2, the manual auxiliary system 200 for the electronic differential lock comprises an electronic differential lock control switch 201, an electronic differential lock controller 202, an electronic differential lock 203, an EPB (Electrical Park Brake) controller 204, a transfer case controller 205 and a meter controller 206, wherein the electronic differential lock control switch 201 is connected with the electronic differential lock controller 202 through a hard wire, and the electronic differential lock controller 202 is connected with the electronic differential lock 203 through a hard wire; the electronic differential lock controller 202, the EPB controller 204, the transfer case controller 205, and the meter controller 206 are connected via a CAN bus.
The control method of the manual auxiliary system of the electronic differential lock comprises the following processes:
a vehicle driver presses the electronic differential lock switch 201 for more than three seconds, so that the electronic differential lock controller 202 starts the working mode of the manual auxiliary system of the electronic differential lock;
the electronic differential lock controller 202 judges whether the vehicle speed information, the left and right wheel speed information and the transfer case gear information on the CAN bus meet the locking condition;
if the locking condition is met, switching on an electromagnetic coil power supply of the rear axle electronic differential lock 203, feeding back a signal that the rear axle electronic differential lock 203 enters a locking state to the CAN bus, and enabling the rear axle electronic differential lock 203 to enter a pre-locking state; meanwhile, the electronic differential lock controller 202 analyzes the wheel speed difference of the left wheel and the right wheel of the rear axle within 5 minutes before the vehicle driver sends a locking instruction, and judges the adhesion coefficient of the left wheel and the right wheel;
the EPB controller 204 is informed through the CAN bus to completely remove the parking brake of the low-attachment wheel when the vehicle starts, and then slowly remove the parking brake of the high-attachment wheel until the parking brake is completely removed after 5 seconds, so that the left wheel and the right wheel generate enough wheel speed difference, and the electronic differential lock CAN be conveniently and successfully locked;
and if the locking condition is not met, the rear axle electronic differential lock refuses to lock and keeps the unlocking state.
Wherein the lock-up condition specifically includes: the speed of the vehicle is less than 5km/H, the speed difference of the left wheel and the right wheel is less than 50r/min, the gear of the transfer case is in a 4H gear or a 4L gear, and the condition that the locking condition is met is judged under the condition that the three conditions are met; the low-attachment wheel represents a wheel with a low adhesion coefficient of the left and right wheels, the high-attachment wheel represents a wheel with a high adhesion coefficient of the left and right wheels, and the wheel with a lower rotating speed is the high-attachment wheel and the wheel with a higher rotating speed is the low-attachment wheel during the running process of the vehicle. After the locking condition is met, power can be supplied to the electronic differential lock 203 through a hard wire, so that the electronic differential lock enters a pre-locking state.
After receiving an instruction of releasing the parking brake through the CAN bus, the EPB controller 204 enables the left and right wheels of the rear axle to be in a parking brake state, completely releases the parking brake of the low auxiliary wheel according to the torque output of the engine, gradually releases the parking brake of the high auxiliary wheel within 5 seconds after the parking brake of the low auxiliary wheel is completely released, and at the moment, the left and right driving wheels of the vehicle start CAN generate a wheel speed difference enough to meet the requirement of locking the electronic differential lock 203, so that the electronic differential lock 203 is directly locked, the condition that the vehicle drives around an S pile in a left and right driving direction on a good high auxiliary road surface to realize the influence of the pre-locking process of the differential lock on the electronic differential lock 203 and the service life of other transmission components is avoided, the successful locking of the electronic differential lock 203 of the rear axle CAN be ensured, and the transmission components CAN be prevented from being damaged.
In addition, the EPB controller 204 applies parking brake only to the rear driving wheels without assisting the front axle electric differential lock for locking. Because the front driving wheels are steering wheels, the front axle electronic differential lock can be locked by the left and right wheel speed difference generated by rotating the steering wheel by 45 degrees forward and backward and can be driven at a low speed without the intervention of a manual auxiliary system of the electronic differential lock.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a locking device according to an embodiment of the present application. As shown in fig. 3, the locking device 300 includes:
a first obtaining module 301, configured to obtain a locking signal;
a second obtaining module 302, configured to obtain parameter information of a vehicle according to the locking signal;
the first control module 303 is configured to control the two driving wheels to be in a parking braking state under the condition that the parameter information meets a preset locking condition, and sequentially release the parking braking states of the two driving wheels according to a first preset time interval, so as to lock the electronic differential lock of the vehicle.
Alternatively, as shown in fig. 4, the locking device 300 may further include:
the second control module 304 is configured to control the electronic differential lock to enter a pre-locking state when the parameter information meets a preset locking condition, so that the electronic differential lock realizes locking when a wheel speed difference between the two driving wheels reaches a preset value.
Alternatively, as shown in fig. 5, the locking device 300 may further include:
a third obtaining module 305, configured to obtain wheel speeds of the two driving wheels before a second preset time interval given by the locking signal, if the parameter information meets a preset locking condition;
the first control module 303 may specifically include:
a determining unit 3031, configured to determine a first target wheel and a second target wheel according to the wheel speeds, and control both the first target wheel and the second target wheel to be in a parking braking state, where the first target wheel is a wheel with a larger wheel speed of the two driving wheels, and the second target wheel is a wheel with a smaller wheel speed of the two driving wheels;
a first release unit 3032 configured to release the parking brake state of the first target wheel when the brake signal is detected;
a second release unit 3033, configured to release the parking brake state of the second target wheel after the first preset time interval.
Alternatively, as shown in fig. 6, the locking device 300 may further include:
a fourth acquisition module 306 for acquiring an output torque of the engine;
and a judging module 307, configured to judge whether the braking signal exists according to the output torque.
Optionally, the parameter information may include:
the speed of the vehicle, the wheel speed difference of the two driving wheels and the transfer gear of the vehicle.
The locking device 300 can implement the processes of the embodiment of the method in fig. 1 in the embodiment of the present application, and achieve the same advantageous effects, and in order to avoid repetition, the detailed description is omitted here.
The embodiment of the application further provides a vehicle, and the vehicle comprises the locking device. It should be noted that, the vehicle provided in the embodiment of the present application includes all technical features in the above-mentioned locking device embodiment, and can achieve the same technical effects, and in order to avoid repetition, details are not described here again.
It should be noted that, in this document, 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 identified by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatuses in the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions recited, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (11)
1. A method of locking, comprising:
acquiring a locking signal;
acquiring parameter information of the vehicle according to the locking signal;
and under the condition that the parameter information meets the preset locking condition, controlling the two driving wheels to be in a parking braking state, and sequentially releasing the parking braking states of the two driving wheels according to a first preset time interval so as to realize the locking of the electronic differential lock of the vehicle.
2. The method of claim 1, wherein the method further comprises:
and under the condition that the parameter information meets the preset locking condition, controlling the electronic differential lock to enter a pre-locking state, so that the electronic differential lock realizes locking under the condition that the wheel speed difference of the two driving wheels reaches a preset value.
3. The method of claim 1, wherein the method further comprises:
under the condition that the parameter information meets a preset locking condition, acquiring wheel speeds of the two driving wheels before a second preset time interval issued by the locking signal;
the parameter information accords with the condition of predetermineeing the locking condition under, control two driving wheels all to be in the parking braking state to according to first preset time interval relieves in proper order the parking braking state of two driving wheels, in order to realize the locking of electron differential lock, include:
determining a first target wheel and a second target wheel according to the wheel speeds, and controlling the first target wheel and the second target wheel to be in a parking braking state, wherein the first target wheel is the wheel with the larger wheel speed of the two driving wheels, and the second target wheel is the wheel with the smaller wheel speed of the two driving wheels;
releasing the parking brake state of the first target wheel in case of detecting a brake signal;
releasing the parking brake state of the second target wheel after the first preset time interval.
4. The method of claim 3, wherein prior to releasing the parking brake state of the first target wheel upon detection of a brake signal, the method further comprises:
acquiring output torque of an engine;
and judging whether the brake signal exists or not according to the output torque.
5. The method of claim 1, wherein the parameter information comprises:
the speed of the vehicle, the wheel speed difference of the two driving wheels and the transfer gear of the vehicle.
6. A locking device, comprising:
the first acquisition module is used for acquiring a locking signal;
the second acquisition module is used for acquiring the parameter information of the vehicle according to the locking signal;
and the first control module is used for controlling the two driving wheels to be in the parking braking state under the condition that the parameter information accords with the preset locking condition, and sequentially releasing the parking braking states of the two driving wheels according to a first preset time interval so as to realize the locking of the electronic differential lock of the vehicle.
7. The lock-out mechanism of claim 6, further comprising:
and the second control module is used for controlling the electronic differential lock to enter a pre-locking state under the condition that the parameter information meets a preset locking condition, so that the electronic differential lock realizes locking under the condition that the wheel speed difference of the two driving wheels reaches a preset value.
8. The lock-out mechanism of claim 6, further comprising:
the third acquisition module is used for acquiring the wheel speeds of the two driving wheels before a second preset time interval issued by the locking signal under the condition that the parameter information meets a preset locking condition;
the first control module includes:
a determination unit configured to determine a first target wheel and a second target wheel according to the wheel speeds, and control both the first target wheel and the second target wheel to be in a parking braking state, the first target wheel being a wheel with a large wheel speed of the two drive wheels, the second target wheel being a wheel with a small wheel speed of the two drive wheels;
a first release unit configured to release a parking brake state of the first target wheel when a brake signal is detected;
a second release unit for releasing the parking brake state of the second target wheel after the first preset time interval.
9. The lock-out mechanism of claim 8, further comprising:
the fourth acquisition module is used for acquiring the output torque of the engine;
and the judging module is used for judging whether the braking signal exists according to the output torque.
10. The lock-out apparatus of claim 6, wherein the parameter information includes:
the speed of the vehicle, the wheel speed difference of the two driving wheels and the transfer gear of the vehicle.
11. A vehicle characterized in that the vehicle includes the lock-up device according to any one of claims 6 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110464336.3A CN113199938B (en) | 2021-04-26 | 2021-04-26 | Locking method and device and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110464336.3A CN113199938B (en) | 2021-04-26 | 2021-04-26 | Locking method and device and vehicle |
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| Publication Number | Publication Date |
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| CN113199938A CN113199938A (en) | 2021-08-03 |
| CN113199938B true CN113199938B (en) | 2022-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110464336.3A Active CN113199938B (en) | 2021-04-26 | 2021-04-26 | Locking method and device and vehicle |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114198478B (en) * | 2021-12-14 | 2023-09-22 | 三一专用汽车有限责任公司 | Differential lock control method, controller thereof and engineering vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007048649A1 (en) * | 2007-10-10 | 2009-04-16 | Audi Ag | Drive device for motor vehicles |
| DE102015218995A1 (en) * | 2015-10-01 | 2017-04-06 | Zf Friedrichshafen Ag | Method for actuating a differential lock of a differential in a motor vehicle drive train |
| KR101846678B1 (en) * | 2016-06-08 | 2018-04-06 | 현대자동차주식회사 | Lane keeping assist method for vehicle |
| CN108944898B (en) * | 2017-05-25 | 2020-06-19 | 比亚迪股份有限公司 | Vehicle and shaft coupling lock control method and system of vehicle |
| CN112092614A (en) * | 2020-09-17 | 2020-12-18 | 北京汽车集团越野车有限公司 | Automatic auxiliary system for locking front and rear axle electronic differential lock, auxiliary method thereof and vehicle |
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