CN114198478A - Differential lock control method, controller thereof and engineering vehicle - Google Patents
Differential lock control method, controller thereof and engineering vehicle Download PDFInfo
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- CN114198478A CN114198478A CN202111527529.5A CN202111527529A CN114198478A CN 114198478 A CN114198478 A CN 114198478A CN 202111527529 A CN202111527529 A CN 202111527529A CN 114198478 A CN114198478 A CN 114198478A
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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
- F16H48/30—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means
- F16H48/34—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means using electromagnetic or electric actuators
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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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/36—Inputs being a function of speed
- F16H59/44—Inputs being a function of speed dependent on machine speed of the machine, e.g. the vehicle
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Abstract
The application provides a differential lock control method, a controller thereof and an engineering vehicle, which solve the technical problem that the differential lock cannot be unlocked quickly when the vehicle speed is too high in the prior art. Firstly, by acquiring state information of a differential lock and current-time vehicle speed information, when the differential lock is in a locking state and the vehicle speed information is greater than first preset vehicle speed information, generating first control information, wherein the first control information is used for controlling a vehicle brake control system to reduce the vehicle speed until the vehicle speed is reduced below second preset vehicle speed information, and generating second control information, and the second control information is used for controlling the differential lock to unlock; when the vehicle speed is too fast, the speed required by unlocking the differential lock is achieved by reducing the vehicle speed, so that the differential lock is unlocked quickly, and further the differential mechanism or the differential lock is prevented from being damaged.
Description
Technical Field
The application relates to the field of engineering machinery, in particular to a differential lock control method, a controller thereof and an engineering vehicle.
Background
The differential is a mechanism for realizing rotation of two connected driving wheels at different rotating speeds, and mainly comprises the following components: two side gears, two planet gears and a gear carrier. When the vehicle is in a turn or runs on an uneven road surface, the two driving wheels rotate at different rotating speeds. When the automobile runs on an off-road surface or a single axle or a single-side tire pit, the differential becomes an obstacle for the automobile to move forward, and in order to enable the automobile to normally run under the above working conditions, a differential lock is generally required to be arranged on a drive axle, and the differential lock is a mechanism capable of realizing rigid connection between a left side gear and a right side gear in the differential.
In the prior art, when a vehicle runs out of a slippery road section or a single-axle or single-side tire pit working condition, a differential lock needs to be unlocked, and when the differential lock is unlocked, the unlocking function of the differential lock can be executed only after the vehicle is decelerated to reach the speed required by a differential lock switch; when the vehicle speed is too fast, then can't unlock the differential lock fast, lead to the differential lock unblock to become invalid, and then damage differential mechanism or differential lock.
Disclosure of Invention
In view of this, the application provides a differential lock control method, a controller thereof and an engineering vehicle, which solve the technical problem that the differential lock cannot be unlocked quickly when the vehicle speed is too high in the prior art.
According to one aspect of the present application, a differential lock control method includes: acquiring state information of a differential lock and current-time vehicle speed information; when the differential lock state information is in a locking state and the current time vehicle speed information is greater than or equal to first preset vehicle speed information, generating first control information, wherein the first control information is used for controlling a vehicle brake control system to reduce the vehicle speed; acquiring first speed information after the vehicle decelerates; when the first speed information is less than or equal to second preset speed information, second control information is generated and used for controlling the differential lock to be unlocked; and the first preset vehicle speed information is greater than the second preset vehicle speed information.
In one possible implementation manner, before obtaining the differential lock state information and the vehicle speed information at the current time, the differential lock control method further includes: acquiring steering angle information; and the steering angle information is greater than or equal to preset steering angle information.
In one possible implementation manner, when the differential lock state information is in a locked state and when the current vehicle speed information is greater than or equal to first preset vehicle speed information, generating first control information includes: when the differential lock state information is in a locking state and the current-time vehicle speed information is greater than or equal to first preset vehicle speed information, acquiring state information of a brake control system; and generating the first control information according to the state information of the brake control system.
In one possible implementation, the brake control system further includes: a clutch control valve; when the differential lock state information is in a locked state and the current vehicle speed information is greater than or equal to first preset vehicle speed information, the acquiring the state information of the brake control system comprises: when the differential lock state information is in a locking state and the current-time vehicle speed information is greater than or equal to first preset vehicle speed information, acquiring the state information of the clutch control valve; wherein the state information of the brake control system, the generating the first control information includes: and when the clutch control valve is in a closed state, generating third control information, wherein the third control information is used for controlling the clutch control valve to be disconnected.
In one possible implementation, the brake control system includes: a brake control valve; after the clutch control valve is in the off state; when the differential lock state information is a locking state and the current vehicle speed information is greater than or equal to first preset vehicle speed information, the acquiring the state information of the brake control system further comprises: when the differential lock state information is in a locking state and the current-time vehicle speed information is greater than or equal to first preset vehicle speed information, acquiring the state information of the brake control valve; generating the first control information according to the state information of the brake control system further includes: and when the brake control valve is in a closed state, generating fourth control information, wherein the fourth control information is used for controlling the opening of the brake control valve.
In one possible implementation manner, after obtaining the first speed information after the vehicle decelerates, the differential lock control method further includes: when the first speed information is larger than second preset speed information and smaller than first preset speed information; acquiring the state of an accelerator control valve; and when the throttle control valve is in an open state, generating fifth control information, wherein the fifth control information is used for controlling the throttle control valve to be closed.
As a second aspect of the present application, a differential lock controller includes: the acquisition module is used for acquiring the state information of the differential lock and the speed information at the current moment and acquiring first speed information after the vehicle decelerates; the control module is used for controlling the differential lock to be in a locking state according to the current speed information and the current speed information; generating first control information for controlling a vehicle brake control system to reduce a vehicle speed; when the first speed information is less than or equal to second preset speed information, second control information is generated and used for controlling the differential lock to be unlocked; and the first preset vehicle speed information is greater than the second preset vehicle speed information.
As a third aspect of the present application, a construction vehicle includes: a differential lock; the vehicle speed sensor is used for acquiring current vehicle speed information; and the differential lock controller is in communication connection with the vehicle speed sensor and the differential lock.
In one possible implementation manner, the method further includes: a brake; and a brake control valve connected to the brake; wherein the brake control valve is in communication with the differential lock controller.
In one possible implementation manner, the method further includes: a clutch; and the clutch control valve is connected with the clutch, wherein the clutch control valve is in communication connection with the differential lock controller.
As a fourth aspect of the present application, an electronic apparatus includes: a processor; and a memory for storing the processor executable information; wherein the processor is configured to execute the differential lock control method according to the preceding claims.
As a fifth aspect of the present application, a computer-readable storage medium stores a computer program for executing the differential lock control method described above.
The application provides a differential lock control method, a controller and an engineering vehicle, firstly, by obtaining state information of a differential lock and current-time vehicle speed information, when the differential lock is in a locked state and the vehicle speed information is greater than first preset vehicle speed information, first control information is generated, the first control information is used for controlling a vehicle brake control system to reduce the vehicle speed until the vehicle speed is reduced below second preset vehicle speed information, second control information is generated, and the second control information is used for controlling the differential lock to be unlocked; when the vehicle speed is too fast, the speed required by unlocking the differential lock is achieved by reducing the vehicle speed, so that the differential lock is unlocked quickly, and further the differential mechanism or the differential lock is prevented from being damaged.
Drawings
FIG. 1 is a schematic flow chart illustrating a differential lock control method according to an embodiment of the present application;
FIG. 2 is a schematic flow chart illustrating a differential lock control method according to another embodiment of the present application;
FIG. 3 is a schematic flow chart illustrating a differential lock control method according to another embodiment of the present application;
FIG. 4 is a schematic flow chart illustrating a differential lock control method according to another embodiment of the present application;
FIG. 5 is a schematic flow chart illustrating a differential lock control method according to another embodiment of the present application;
FIG. 6 is a schematic flow chart illustrating a differential lock control method according to another embodiment of the present application;
FIG. 7 is a schematic diagram illustrating the operation of a differential lock controller according to an embodiment of the present application;
FIG. 8 is a schematic structural diagram of a construction vehicle according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise. All directional indicators in the embodiments of the present application (such as upper, lower, left, right, front, rear, top, bottom … …) are only used to explain the relative positional relationship between the components, the movement, etc. in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Furthermore, reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
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 only a part of the embodiments of the present application, and not all of the embodiments. 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.
FIG. 1 is a schematic flow chart illustrating a differential lock control method according to an embodiment of the present application; as shown in fig. 1, the differential lock control method includes:
step S100, obtaining differential lock state information and current vehicle speed information;
acquiring the state information of a differential lock of the vehicle and the current-time vehicle speed information so as to judge the current state of the vehicle; in practical application, when a vehicle is on a slipping road section or under the working condition of a single-axle or single-side tire pit, one driving wheel slips and the other driving wheel is stuck, and the slipping driving wheel is in a rotating body due to the fact that the differential mechanism can allow the stuck driving wheel to be in a static state, the vehicle cannot advance, and therefore the differential lock is locked, so that the rotating speeds of the two connected driving wheels are the same, and the vehicle can run out of the current working condition. When the vehicle runs out of a slippery road section or a single-axle or single-side tire pit working condition, the differential lock needs to be unlocked, and therefore the state information of the differential lock of the vehicle and the vehicle speed information at the current moment need to be acquired before the differential lock is unlocked.
Step S200, judging whether the differential lock is in a locking state or not;
if the determination result in the step S200 is yes, it indicates that the differential lock is in the locked state, and step S300 needs to be executed to determine whether the vehicle speed at the current time meets the requirement for unlocking the differential lock.
When the judgment result in the step S200 is no, it indicates that the differential lock is in the unlocked state, and other steps are not required.
Step S300, judging whether the vehicle speed information at the current moment is greater than or equal to first preset vehicle speed information;
if the determination result in step S300 is positive, it indicates that the current vehicle speed information is greater than or equal to the first preset vehicle speed information, and the vehicle speed is too high, which may cause wear to the differential and the wheels, so that the differential lock needs to be unlocked in a short time, and the unlocking of the differential lock needs to reach the required unlocking speed of the corresponding differential lock, so that the speed of the vehicle needs to be reduced, so step S400 is performed.
It should be noted that the first preset vehicle speed information may be set to 10 km/h. When the differential lock is in a locked state, if the vehicle speed is too large, certain abrasion is generated on wheels and a differential, and in order to avoid the condition, after the current vehicle speed information is judged to be larger than or equal to the first preset vehicle speed information, the vehicle needs to be decelerated.
If the determination result in the step S300 is negative, it indicates that the current vehicle speed information is less than the first preset vehicle speed information, and the required speed for unlocking the differential lock cannot be obtained, so that the determination needs to be performed again, and then the step S600 needs to be performed.
Step S400, first control information is generated, and the first control information is used for controlling a vehicle brake control system to reduce a vehicle speed.
Step S400 is that when the judgment result in the step S200 is yes, the differential lock is in a locking state; when the judgment in the step S300 is yes, the current time vehicle speed information is greater than or equal to the first preset vehicle speed information, which indicates that the vehicle differential lock is in a locked state and the vehicle speed is too fast; in order to enable the vehicle speed to reach the speed at which the differential lock requires unlocking, first control information needs to be generated, and the first control information is used for controlling a vehicle brake control system to reduce the vehicle speed.
In step S500, first speed information after the vehicle decelerates is acquired.
When the first control information is generated to control the vehicle braking control system in step S400, and the vehicle speed is reduced, the decelerated vehicle speed information is obtained to determine whether the requirement for unlocking the differential lock can be met, that is, step S600 is executed.
Step S600, judging whether the first speed information is less than or equal to second preset speed information; and the first preset vehicle speed information is greater than the second preset vehicle speed information.
If the determination result in the step S600 is yes, the first speed information is less than or equal to second preset vehicle speed information, and the set second preset vehicle speed information is vehicle speed information required by unlocking the differential lock, and may be 5 kilometers per hour, or may be a range value of 1 to 5 kilometers per hour, so that the differential lock can be unlocked, that is, step S700 is executed.
And when the judgment result in the step S600 is negative, the first speed information is greater than the second preset vehicle speed information, which indicates that the vehicle speed information does not reach the vehicle speed information required by unlocking the differential lock, returning to the step S400 to continue to reduce the vehicle speed through the first control information.
And step S700, generating second control information, wherein the second control information is used for controlling unlocking of the differential lock.
Step S700 is that when the determination result in step S600 is yes, the first speed information is less than or equal to second preset vehicle speed information, which indicates that the decelerated vehicle speed can reach the required vehicle speed for unlocking the differential lock, and at this time, second control information is generated, where the second control information is used to control unlocking of the differential lock, that is, when the vehicle speed is too fast, the differential lock is quickly unlocked.
According to the differential lock control method, firstly, by obtaining state information of a differential lock and current-time vehicle speed information, when the differential lock is in a locking state and the vehicle speed information is greater than first preset vehicle speed information, first control information is generated and used for controlling a vehicle brake control system to reduce the vehicle speed until the vehicle speed is reduced to be lower than second preset vehicle speed information, second control information is generated and used for controlling unlocking of the differential lock; when the vehicle speed is too fast, the speed required by unlocking the differential lock is achieved by reducing the vehicle speed, so that the differential lock is unlocked quickly, and further the differential mechanism or the differential lock is prevented from being damaged.
In a possible implementation manner, fig. 2 is a schematic flow chart of a differential lock control method according to another embodiment of the present application; as shown in fig. 2, before step S100 (obtaining the differential lock state information and the current time vehicle speed information), the differential lock control method further includes:
step S101, obtaining steering angle information;
the steering angle refers to an angle formed by a central line when a front wheel of the automobile turns to the left or the right to a limit position and the front wheel does not deflect, and whether the automobile is in a steering state or not can be judged through the steering angle, so that the steering angle information needs to be acquired.
And step S102, judging whether the steering angle information is larger than or equal to the preset steering angle information.
If the determination result in step S102 is yes, it indicates that when the steering angle information is greater than or equal to the preset steering angle information, where the preset steering angle is a steering angle of the vehicle, and when the steering angle information is greater than or equal to the preset steering angle information, the vehicle is in a steering stage, and then to avoid wear of tires inside the vehicle, the rotation speed of the inside driving wheel of the two connected driving wheels needs to be less than the rotation speed of the outside driving wheel, so steps S100-S700 need to be executed to unlock the differential lock of the vehicle, so that the rotation speed of the inside driving wheel of the two connected driving wheels is less than the rotation speed of the outside driving wheel.
If the determination result in the step S102 is negative, it indicates that the steering angle information is smaller than the preset steering angle information, and therefore, the wear of the tire on the inner side of the vehicle does not occur, and it is not necessary to determine the state of the differential lock.
In a possible implementation manner, fig. 3 is a schematic flow chart of a differential lock control method according to another embodiment of the present application; as shown in fig. 3, when the judgment result of the step S200 is yes, the differential lock is in the locked state; when the judgment in the step S300 is yes, the current vehicle speed information is greater than or equal to the first preset vehicle speed information; step S400 (generating first control information for controlling the vehicle brake control system to reduce the vehicle speed) includes:
in step S401, status information of the brake control system is acquired.
When the judgment results in the steps S200 and S300 are both yes, the differential lock is in a locked state, and when the current vehicle speed information is greater than or equal to the first preset vehicle speed information, the vehicle speed is too fast, and the required vehicle speed for unlocking the differential lock cannot be reached. Since the brake control system is used for stopping the running vehicle or for an operation of reducing the vehicle speed, it is necessary to acquire the state of the brake control system and to check whether the vehicle is in a decelerated state.
Step 402, generating first control information according to the state information of the brake control system.
And generating first control information according to the state information of the brake control system, namely realizing that the first control information is generated to control the brake control system to reduce the vehicle speed until the vehicle speed reaches the required speed for unlocking the differential lock, and realizing the unlocking of the differential lock. Through knowing the concrete state of braking control system, after generating first control information in order to reduce vehicle speed, in order to realize the differential lock unblock fast, avoid the damage of differential lock and differential mechanism, prolong the life of differential lock and differential mechanism.
In a possible implementation manner, fig. 4 is a schematic flow chart of a differential lock control method according to another embodiment of the present application; as shown in fig. 4, the brake control system further includes: a clutch control valve; when the judgment result in the step S200 is yes, the differential lock is in a locking state; when the judgment in the step S300 is yes, the current vehicle speed information is greater than or equal to the first preset vehicle speed information; step S401 (acquiring the state information of the brake control system) includes:
step S4011, obtaining state information of a clutch control valve;
generally, a clutch is used to temporarily disconnect and gradually engage an engine and a transmission to cut off or transmit power input from the engine to the transmission to enable smooth running of a vehicle; the clutch control valve is used for controlling the separation and the engagement of the clutch. Before braking the vehicle, in order to enable the vehicle to smoothly reduce the speed, the clutch is operated to cut off the power input from the engine to the transmission; therefore, the state information of the clutch control valve is acquired first.
Step 402 (generating first control information from the state information of the brake control system) includes:
step S4021, judging whether the clutch control valve is in a closed state;
if the determination result in step S4021 is yes, the clutch control valve is closed, which means that the clutch is engaged, and the engine inputs power to the transmission, so that step S4024 needs to be executed.
If the determination result in step S4021 is negative, it means that the clutch control valve is in the off state, and that the clutch is in the disengaged state, and the power input from the engine to the transmission is cut off, step S4011 needs to be executed to acquire the state of the brake control valve.
In step S4022, third control information for controlling the clutch control valve to be opened is generated.
Step S4022 is that when the determination result in step S4021 is yes, the clutch control valve is in the closed state, and third control information is generated for controlling the clutch control valve to open to cut off the power input from the engine to the transmission, so that when the subsequent step is performed to reduce the vehicle speed, the impact of reducing the vehicle speed is reduced to enable the vehicle to smoothly reduce the vehicle speed.
In a possible implementation manner, fig. 5 is a schematic flow chart of a differential lock control method according to another embodiment of the present application; as shown in fig. 5, the brake control system includes: a brake control valve; when the judgment result in the step S200 is yes, the differential lock is in a locking state; when the judgment in the step S300 is yes, the current vehicle speed information is greater than or equal to the first preset vehicle speed information; after step S4021 (determination that the clutch control valve is in the off state), then
Step S401 (acquiring the state information of the brake control system) further includes:
step S4012, obtaining state information of a brake control valve;
when the judgment results in the steps S200 and S300 are both yes, it indicates that the differential lock is in a locked state, and the current vehicle speed information is greater than or equal to the first preset vehicle speed information, and the vehicle speed is too fast to perform a result on the differential lock; and when the clutch control valve is in the off state in step S4021, the state information of the brake control valve is acquired in step S4012, and it is determined whether the vehicle is in the acceleration or deceleration state, that is, step S4023 is executed;
step 402 (generating first control information from the state information of the brake control system) further includes:
step S4023, judging whether the brake control valve is in a closed state;
if the judgment result in the step S4023 is yes, the brake control valve is in a closed state, and the fuel injection amount of the engine is not reduced, so that the opening of the brake control valve needs to be adjusted, that is, step S4024 is executed;
if the determination result in step S4023 is "no", the brake control valve is in the off state, which indicates that the fuel injection amount of the engine has been reduced, and after the vehicle is in the deceleration state, the vehicle speed after deceleration needs to be known, that is, step S500 is executed.
Step S4024 of generating fourth control information for controlling the opening of the brake control valve;
step S4024 is that if the determination result in step S4023 is yes, it indicates that the brake control valve is in the closed state, and then fourth control information is generated, where the fourth control information is used to control the opening of the brake control valve; the aim of reducing the oil injection quantity of the transmitter can be achieved by controlling the degree of the brake control valve to be reduced or disconnected, so that the vehicle speed is reduced, the vehicle speed can be rapidly reduced, and the required speed for unlocking the differential lock is achieved; and then realize quick execution unblock differential lock.
Specifically, it can be understood that, in order to rapidly reduce the vehicle speed, when the brake control valve is in the closed state, the current time vehicle speed information is compared with the first preset vehicle speed information, a speed difference between the current time vehicle speed information and the first preset vehicle speed information is obtained, and fourth control information is generated by combining preset time, where the fourth control information is used to control the opening of the brake control valve to be reduced, so that the current vehicle speed can be reduced to the first preset vehicle speed within the preset time, that is, the vehicle can be decelerated within the preset time, and then the vehicle can unlock the differential lock within the preset time.
In a possible implementation manner, fig. 6 is a schematic flow chart of a differential lock control method according to another embodiment of the present application; as shown in fig. 6, after step S500 (acquiring first speed information after deceleration of the vehicle), the differential lock control method further includes:
step S600, judging whether the first speed information is less than or equal to second preset speed information;
when the judgment result in the step S600 is negative, the first speed information is greater than the second preset speed information and less than the first preset speed information; in order to prevent the vehicle from stopping, the throttle control valve needs to be opened, namely step S801 is executed;
step S801, acquiring the state of an accelerator control valve;
according to the state of the throttle control valve, whether fuel is provided for the engine or not can be known.
Step S802, judging whether the throttle control valve is in a disconnection state;
if the judgment result in the step S802 is yes, it indicates that the throttle control valve is in an off state, and fuel is not provided to the engine at this time, so that the step S804 needs to be executed to prevent the vehicle from stopping;
and when the judgment result in the step S802 is negative, the accelerator control valve is in a closed state, fuel is provided for the engine at the moment, and the safety risk after the vehicle stops is avoided.
Step S803, generating fifth control information, wherein the fifth control information is used for controlling the throttle control valve to be closed;
and the throttle control valve is controlled to be closed through the fifth control information so as to supply fuel to the engine, so that the safety risk caused after the vehicle stops is avoided.
In a second aspect of the present application, fig. 7 is a schematic diagram of an operation of a differential lock controller provided in the present application, and as shown in fig. 7, the differential lock controller includes: the acquiring module 11 is used for acquiring the state information of the differential lock and the speed information at the current moment, and acquiring first speed information after the vehicle decelerates; the control module 12 is used for controlling the differential lock to be in a locking state when the differential lock state information is in the locking state and the current-time vehicle speed information is greater than or equal to first preset vehicle speed information; generating first control information for controlling a vehicle brake control system to reduce a vehicle speed; when the first speed information is less than or equal to second preset speed information, second control information is generated and used for controlling unlocking of the differential lock; and the first preset vehicle speed information is greater than the second preset vehicle speed information. Firstly, acquiring the state information of a differential lock and the current-time vehicle speed information through an acquisition module 11; the control module 12 generates first control information according to the fact that the differential lock state information of the acquisition module 11 is in a locked state and the current-time vehicle speed information is greater than or equal to first preset vehicle speed information, wherein the first control information is used for controlling a vehicle brake control system to reduce the vehicle speed; the obtaining module 11 obtains first speed information of the vehicle after deceleration, and the control module 12 generates second control information according to the obtained first speed information when the first speed information is less than or equal to second preset speed information, wherein the second control information is used for controlling unlocking of a differential lock; when the vehicle speed is too high, the differential lock of the vehicle can be unlocked quickly, so that the differential lock and the differential are prevented from being damaged.
In a third aspect of the present application, fig. 8 is a schematic structural diagram of an engineering vehicle provided in the present application, and as shown in fig. 8, the engineering vehicle includes: a differential lock 1; the vehicle speed sensor 2 is used for acquiring current vehicle speed information; and the differential lock controller 3, wherein the differential lock controller 3 is in communication connection with the vehicle speed sensor 2 and the differential lock 1. The differential lock 1 is used for locking a differential to realize a mechanism for rigidly connecting a left side gear and a right side gear. The vehicle speed sensor 2 is used for detecting the speed of the vehicle; the differential lock controller 3 is in communication connection with the vehicle speed sensor 2 and the differential lock 1, when the differential lock 1 acquired by the differential lock controller 3 is in a locking state, and vehicle speed information detected by the vehicle speed sensor 2 is greater than first preset vehicle speed information, first control information is generated and used for controlling a vehicle braking system to reduce vehicle speed until the vehicle speed is reduced to be below second preset vehicle speed information, second control information is generated and used for controlling the differential lock to unlock, namely, the differential lock is unlocked quickly, and damage to the differential mechanism, namely the differential lock is avoided.
In one possible implementation, as shown in fig. 8, the work vehicle further includes: a brake 4; and a brake control valve 5 connected to the brake 5; wherein the brake control valve 5 is in communication with the differential lock controller 3. The brake 4 is a device having a function of decelerating, stopping, or holding a stopped state of a moving member (or a moving machine). The brake control valve 5 is used for controlling the working state of the brake 4, the differential lock controller 3 controls the brake control valve 5 to be closed or opened according to the state of the differential lock 1 and the vehicle speed information detected by the vehicle speed sensor 2, when the differential lock 1 acquired by the differential lock controller 3 is in a locking state and the vehicle speed information detected by the vehicle speed sensor 2 is greater than the first preset vehicle speed information, the brake control valve 5 is controlled to be opened, and the brake 4 works so as to reduce the vehicle speed.
In one possible implementation, as shown in fig. 8, the work vehicle further includes: a clutch 6; and a clutch control valve 7 connected to the clutch 6, wherein the clutch control valve 7 is in communication with the differential lock controller 3. The clutch 6 is used to temporarily disengage and gradually engage the engine and the transmission, and to cut off or transmit power output from the engine, and the clutch control valve 7 is used to control the operating state of the clutch 6. When the differential lock 1 acquired by the differential lock controller 3 is in a locked state and the vehicle speed information detected by the vehicle speed sensor 2 is greater than the first preset vehicle speed information, before the brake control valve 5 is controlled to be disconnected, the vehicle can be decelerated stably for the brake 4 to work; the clutch 6 is required to temporarily separate the engine from the gearbox to cut off the power output from the engine to the gearbox, and at this time, the differential lock controller 3 is required to be in a locking state according to the differential lock 1, and the vehicle speed information detected by the vehicle speed sensor 2 is greater than the first preset vehicle speed information, so that the clutch control valve 6 is controlled to be disconnected to cut off the power output from the engine to the gearbox, the brake 4 works after the brake control valve 5 is controlled to be disconnected to stably reduce the vehicle speed, and the differential lock is further enabled to reach the unlocking speed to realize the unlocking of the differential lock.
Next, an electronic apparatus according to an embodiment of the present application is described with reference to fig. 9. Fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
As shown in fig. 9, the electronic device 600 includes one or more processors 601 and memory 602.
The processor 601 may be a Central Processing Unit (CPU) or other form of processing unit having data processing capabilities and/or information execution capabilities, and may control other components in the electronic device 600 to perform desired functions.
Memory 601 may include one or more computer program products that may include various forms of computer-readable storage media, such as volatile memory and/or non-volatile memory. The volatile memory may include, for example, Random Access Memory (RAM), cache memory (cache), and/or the like. The non-volatile memory may include, for example, Read Only Memory (ROM), hard disk, flash memory, etc. One or more computer program information may be stored on the computer readable storage medium and executed by the processor 601 to implement the differential lock control methods of the various embodiments of the present application described above or other desired functions.
In one example, the electronic device 600 may further include: an input device 603 and an output device 604, which are interconnected by a bus system and/or other form of connection mechanism (not shown).
The input device 603 may include, for example, a keyboard, a mouse, and the like.
The output device 604 can output various kinds of information to the outside. The output means 604 may comprise, for example, a display, a communication network, a remote output device connected thereto, and the like.
Of course, for simplicity, only some of the components of the electronic device 600 relevant to the present application are shown in fig. 9, and components such as buses, input/output interfaces, and the like are omitted. In addition, electronic device 600 may include any other suitable components depending on the particular application.
In addition to the above-described methods and apparatus, embodiments of the present application may also be a computer program product comprising computer program information which, when executed by a processor, causes the processor to perform the steps in the differential lock control methods according to various embodiments of the present application described in the present specification.
The computer program product may be written with program code for performing the operations of embodiments of the present application in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server.
Furthermore, embodiments of the present application may also be a computer-readable storage medium having stored thereon computer program information which, when executed by a processor, causes the processor to perform the steps in the differential lock control methods of the present specification according to various embodiments of the present application.
The computer-readable storage medium may take any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may include, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The foregoing describes the general principles of the present application in conjunction with specific embodiments, however, it is noted that the advantages, effects, etc. mentioned in the present application are merely examples and are not limiting, and they should not be considered essential to the various embodiments of the present application. Furthermore, the foregoing disclosure of specific details is for the purpose of illustration and description and is not intended to be limiting, since the foregoing disclosure is not intended to be exhaustive or to limit the disclosure to the precise details disclosed.
The block diagrams of devices, apparatuses, systems referred to in this application are only given as illustrative examples and are not intended to require or imply that the connections, arrangements, configurations, etc. must be made in the manner shown in the block diagrams. These devices, apparatuses, devices, systems may be connected, arranged, configured in any manner, as will be appreciated by those skilled in the art. Words such as "including," "comprising," "having," and the like are open-ended words that mean "including, but not limited to," and are used interchangeably therewith. The words "or" and "as used herein mean, and are used interchangeably with, the word" and/or, "unless the context clearly dictates otherwise. The word "such as" is used herein to mean, and is used interchangeably with, the phrase "such as but not limited to".
It should also be noted that in the devices, apparatuses, and methods of the present application, the components or steps may be decomposed and/or recombined. These decompositions and/or recombinations are to be considered as equivalents of the present application.
The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the application. Thus, the present application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
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 present invention, and any modifications, equivalents and the like that are within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A differential lock control method, characterized by comprising:
acquiring state information of a differential lock and current-time vehicle speed information;
when the differential lock state information is in a locking state and the current time vehicle speed information is greater than or equal to first preset vehicle speed information, generating first control information, wherein the first control information is used for controlling a vehicle brake control system to reduce the vehicle speed;
acquiring first speed information after the vehicle decelerates;
when the first speed information is less than or equal to second preset speed information, second control information is generated and used for controlling the differential lock to be unlocked;
and the first preset vehicle speed information is greater than the second preset vehicle speed information.
2. The differential lock control method according to claim 1, characterized in that before obtaining the differential lock state information and the vehicle speed information at the present time, the differential lock control method further comprises:
acquiring steering angle information; and
the steering angle information is greater than or equal to preset steering angle information.
3. The differential lock control method according to any one of claims 1 to 2, wherein when the differential lock state information is a locked state and when the current-time vehicle speed information is greater than or equal to first preset vehicle speed information, generating first control information includes:
when the differential lock state information is in a locking state and the current-time vehicle speed information is greater than or equal to first preset vehicle speed information, acquiring state information of a brake control system; and
and generating the first control information according to the state information of the brake control system.
4. The differential lock control method according to claim 3, wherein the brake control system further includes: a clutch control valve;
when the differential lock state information is in a locked state and the current vehicle speed information is greater than or equal to first preset vehicle speed information, the acquiring the state information of the brake control system comprises:
when the differential lock state information is in a locking state and the current-time vehicle speed information is greater than or equal to first preset vehicle speed information, acquiring the state information of the clutch control valve;
wherein the generating of the first control information from the state information of the brake control system comprises:
and when the clutch control valve is in a closed state, generating third control information, wherein the third control information is used for controlling the clutch control valve to be disconnected.
5. The differential lock control method according to claim 4, wherein the brake control system includes: a brake control valve;
after the clutch control valve is in the off state; when the differential lock state information is a locking state and the current vehicle speed information is greater than or equal to first preset vehicle speed information, the acquiring the state information of the brake control system further comprises:
when the differential lock state information is in a locking state and the current-time vehicle speed information is greater than or equal to first preset vehicle speed information, acquiring the state information of the brake control valve;
generating the first control information according to the state information of the brake control system further includes:
and when the brake control valve is in a closed state, generating fourth control information, wherein the fourth control information is used for controlling the opening of the brake control valve.
6. The differential lock control method according to claim 1, characterized in that, after acquiring the first speed information after the vehicle is decelerated, the differential lock control method further includes:
when the first speed information is larger than the second preset speed information and smaller than the first preset speed information;
acquiring the state of an accelerator control valve;
and when the throttle control valve is in an open state, generating fifth control information, wherein the fifth control information is used for controlling the throttle control valve to be closed.
7. A differential lock controller, comprising:
the acquisition module is used for acquiring the state information of the differential lock and the speed information at the current moment and acquiring first speed information after the vehicle decelerates;
the control module is used for controlling the differential lock to be in a locking state according to the current speed information and the current speed information; generating first control information for controlling a vehicle brake control system to reduce a vehicle speed; when the first speed information is less than or equal to second preset speed information, second control information is generated and used for controlling the differential lock to be unlocked; and the first preset vehicle speed information is greater than the second preset vehicle speed information.
8. A work vehicle, characterized by comprising:
a differential lock;
the vehicle speed sensor is used for acquiring current vehicle speed information; and
the differential lock controller of claim 7, being communicatively coupled to the vehicle speed sensor and the differential lock.
9. The work vehicle of claim 8, further comprising:
a brake; and
a brake control valve connected with the brake; wherein the content of the first and second substances,
the brake control valve is in communication connection with the differential lock controller.
10. The work vehicle of claim 9, further comprising:
a clutch; and
a clutch control valve connected to the clutch, wherein,
the clutch control valve is in communication connection with the differential lock controller.
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| CN202111527529.5A CN114198478B (en) | 2021-12-14 | 2021-12-14 | Differential lock control method, controller thereof and engineering vehicle |
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| CN202111527529.5A CN114198478B (en) | 2021-12-14 | 2021-12-14 | Differential lock control method, controller thereof and engineering vehicle |
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| CN114198478B CN114198478B (en) | 2023-09-22 |
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| CN114198478B (en) | 2023-09-22 |
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