CN114198478B - 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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- CN114198478B CN114198478B CN202111527529.5A CN202111527529A CN114198478B CN 114198478 B CN114198478 B CN 114198478B CN 202111527529 A CN202111527529 A CN 202111527529A CN 114198478 B CN114198478 B CN 114198478B
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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 quickly unlocked when the vehicle speed is too high in the prior art. Firstly, acquiring state information of a differential lock and current moment vehicle speed information, when the differential lock is in a locking state and the vehicle speed information is larger 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, generating second control information, and the second control information is used for controlling the differential lock to be unlocked; when the speed of the vehicle is too high, the speed required by unlocking the differential lock is achieved by reducing the speed of the vehicle, so that the differential lock is quickly unlocked, and 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 mechanism is a mechanism for realizing rotation at different rotation speeds of two connected driving wheels, and mainly comprises: two side gears, two planetary gears and a gear carrier. When the vehicle is turning or driving on uneven road, the two driving wheels are rotated at different rotational speeds. When the automobile runs on an off-road surface or a single-axle or single-side tire pit, the differential gear becomes an obstacle for the front of the automobile, and in order to enable the automobile to run normally under the above working conditions, it is generally necessary to arrange a differential lock on a drive axle, wherein the differential lock is a mechanism capable of realizing rigid connection of a left side shaft gear and a right side shaft gear in the differential gear.
In the prior art, when a vehicle runs out of a skid road section or a single-axle or single-side tire pit-sinking working condition, the differential lock needs to be unlocked, and when the differential lock is unlocked, the differential lock can be unlocked only after the vehicle is decelerated to reach the speed required by a differential lock switch; when the vehicle speed is too high, the differential lock cannot be unlocked quickly, so that the differential lock is unlocked and fails, and the differential mechanism or the differential lock is damaged.
Disclosure of Invention
In view of the above, 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 quickly unlocked 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 differential lock state information and current time vehicle speed information; when the differential lock state information is in a locking state and the current moment vehicle speed information is larger 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 so as to reduce the vehicle speed; acquiring first speed information after the vehicle is decelerated; when the first speed information is smaller than or equal to second preset vehicle speed information, generating second control information, wherein the second control information is used for controlling the differential lock to be unlocked; wherein 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 current time vehicle speed information, 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 a locking state and when the current time vehicle speed information is greater than or equal to a first preset vehicle speed information, generating first control information includes: when the differential lock state information is in a locking state and the current moment 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 locking state and when the current time vehicle speed information is greater than or equal to first preset vehicle speed information, the obtaining the state information of the brake control system comprises: when the differential lock state information is in a locking state and the current moment vehicle speed information is greater than or equal to first preset vehicle speed information, acquiring state information of the clutch control valve; wherein the state information of the brake control system, 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 opened.
In one possible implementation, the brake control system includes: a brake control valve; after acquiring that the clutch control valve is in an off state; 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, the obtaining the state information of the brake control system further comprises: when the differential lock state information is in a locking state and the current moment vehicle speed information is greater than or equal to first preset vehicle speed information, acquiring 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, fourth control information is generated, and the fourth control information is used for controlling the opening degree of the brake control valve.
In one possible implementation, after acquiring the first speed information after the vehicle is decelerated, the differential lock control method further includes: when the first speed information is greater 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 state is in an off 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 differential lock state information, current moment vehicle speed information and first speed information after the vehicle is decelerated; the control module is used for controlling the differential lock state information to be in a locking state according to the condition that the differential lock state information is in the locking state, and the current moment vehicle speed information is larger 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 smaller than or equal to second preset vehicle speed information, generating second control information, wherein the second control information is used for controlling the differential lock to be unlocked; wherein 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, the method further includes: a brake; 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, the method further includes: a clutch; and a clutch control valve coupled to the clutch, wherein the clutch control valve is communicatively coupled to 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 perform the differential lock control method of the preceding claims.
As a fifth aspect of the present application, a computer-readable storage medium storing a computer program for executing the differential lock control method described above.
The application provides a differential lock control method, a controller thereof and an engineering vehicle, wherein the differential lock control method comprises the steps of firstly, obtaining state information of a differential lock and current moment vehicle speed information, when the differential lock is in a locking state and the vehicle speed information is larger 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, generating second control information, and the second control information is used for controlling the differential lock to be unlocked; when the speed of the vehicle is too high, the speed required by unlocking the differential lock is achieved by reducing the speed of the vehicle, so that the differential lock is quickly unlocked, and the differential mechanism or the differential lock is prevented from being damaged.
Drawings
FIG. 1 is a flow chart of a differential lock control method according to an embodiment of the present application;
FIG. 2 is a flow chart of a differential lock control method according to another embodiment of the present application;
FIG. 3 is a flow chart of a differential lock control method according to another embodiment of the present application;
FIG. 4 is a flow chart of a differential lock control method according to another embodiment of the present application;
FIG. 5 is a flow chart of a differential lock control method according to another embodiment of the present application;
FIG. 6 is a flow chart of 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 view 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 application.
Detailed Description
In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. All directional indications (such as up, down, left, right, front, rear, top, bottom … …) in embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular gesture (as shown in the figures), and if the particular gesture changes, the directional indication changes accordingly. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.
Furthermore, references herein to "an embodiment" mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases 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. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
FIG. 1 is a flow chart of 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, acquiring differential lock state information and current moment vehicle speed information;
acquiring differential lock state information of a vehicle and current moment vehicle speed information so as to judge the current state of the vehicle; in practical application, when the vehicle is in a slip road section or single-axle or single-side tire pit working condition, one driving wheel slips, the other driving wheel is blocked, and as the differential mechanism can allow the blocked driving wheel to be in a static state, the slipped driving wheel is in a rotary body, so that the vehicle cannot advance, and the differential lock is locked, so that the rotation speeds of the two connected driving wheels are the same, and the vehicle is driven out of the current working condition. When the vehicle runs out of a skid road section or a single-axle or single-side tire pit working condition, the differential lock needs to be unlocked, so that the differential lock state information 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;
if the determination result in step S200 is yes, it is indicated that the differential lock is in the locked state at this time, and step S300 is required to be executed to determine whether the vehicle speed at the current time of the vehicle meets the differential lock unlocking requirement.
When the judgment result of the step S200 is no, it is indicated that the differential lock is in the unlocked state at this time, and other steps are not required.
Step S300, judging whether the current moment vehicle speed information is larger than or equal to first preset vehicle speed information;
when the result of the step S300 is yes, it is indicated that the current vehicle speed information is greater than or equal to the first preset vehicle speed information, and the vehicle speed is too fast, so that a certain wear is generated on the differential mechanism and the wheels, and therefore the differential lock needs to be unlocked in a short time, and the differential lock needs to reach the corresponding differential lock unlocking requirement speed, and then the speed of the vehicle needs to be reduced, so that the step S400 is executed.
The first preset vehicle speed information may be set to 10 km/h. In order to avoid certain abrasion to wheels and a differential mechanism when the differential lock is in a locked state and if the vehicle speed is too high, the vehicle needs to be decelerated after judging that the vehicle speed information at the current moment is larger than or equal to the first preset vehicle speed information.
If the determination result in step S300 is no, it is indicated that the current vehicle speed information is smaller than the first preset vehicle speed information, and the required speed for unlocking the differential lock can not be obtained, so that a further determination is required, and step S600 is required.
In step S400, first control information is generated, the first control information being used to control a vehicle brake control system to reduce a vehicle speed.
Step S400 is that when the judging result of step S200 is yes, the differential lock is in a locking state; and when the judgment in the step S300 is yes, the vehicle speed information at the current moment is larger than or equal to the first preset vehicle speed information, which indicates that the differential lock of the vehicle is in a locking state and the vehicle speed is too high; in order to enable the vehicle speed to reach the speed at which the differential lock requires unlocking, it is then necessary to generate first control information for controlling the vehicle brake control system to reduce the vehicle speed.
Step S500, acquiring first speed information after the vehicle is decelerated.
When the first control information is generated in step S400 to control the vehicle brake control system, after the vehicle speed is reduced, the first speed information after the vehicle is decelerated is obtained, and then the decelerated vehicle speed information is used to determine whether the requirement of unlocking the differential lock can be met, that is, step S600 is executed.
Step S600, judging whether the first speed information is smaller than or equal to second preset speed information; wherein the first preset vehicle speed information is greater than the second preset vehicle speed information.
When the determination result in step S600 is yes, the first speed information is less than or equal to the second preset vehicle speed information, where the set second preset vehicle speed information is the vehicle speed information required for unlocking the differential lock, and may be 5 km/h or a range of values 1-5 km/h, so that the differential lock may be unlocked, that is, step S700 is executed.
If the result of the step S600 is no, the first speed information is greater than the second preset speed information, which indicates that the speed information does not reach the speed information required for unlocking the differential lock, and the step S400 is returned to continue to reduce the speed through the first control information.
In step S700, second control information is generated, where the second control information is used to control unlocking of the differential lock.
Step S700 is that when the determination result in step S600 is yes, the first speed information is smaller than or equal to the second preset vehicle speed information, which indicates that the vehicle speed after deceleration 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 the unlocking of the differential lock, that is, to achieve fast unlocking of the differential lock when the vehicle speed is too fast.
According to the differential lock control method, firstly, through obtaining state information of a differential lock and current time speed information, when the differential lock is in a locking state and the speed information is larger than first preset 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 speed information, second control information is generated, and the second control information is used for controlling the differential lock to be unlocked; when the speed of the vehicle is too high, the speed required by unlocking the differential lock is achieved by reducing the speed of the vehicle, so that the differential lock is quickly unlocked, and the differential mechanism or the differential lock is prevented from being damaged.
In one 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 differential lock state information and 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 the front wheels of the automobile turn left or right to the limit position and the front wheels are not deflected, and whether the vehicle is in a steering state can be judged through the steering angle, so that steering angle information needs to be acquired.
Step S102, judging whether the steering angle information is larger than or equal to preset steering angle information.
When the judgment result of step S102 is yes, it is indicated that when the steering angle information is greater than or equal to the preset steering angle information, where the preset steering angle is the angle at which the vehicle is steered, and when the steering angle information is greater than or equal to the preset steering angle information, the vehicle is in a steering stage at this time, and in order to avoid wear of the inner tires of the vehicle, the rotational speed of the inner driving wheel of the two connected driving wheels is required to be less than the rotational speed of the outer driving wheel, so steps S100-S700 are required to be executed to unlock the differential lock of the vehicle, so that the rotational speed of the inner driving wheel of the two connected driving wheels is less than the rotational speed of the outer driving wheel.
If the determination result in step S102 is no, it is indicated that the steering angle information is smaller than the preset steering angle information, and no abrasion to the tire inside the vehicle occurs, and the state of the differential lock is not required to be determined.
In one 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 determination result in step S200 is yes, the differential lock is in a locked state; and when the judgment of the step S300 is yes, when the current moment vehicle speed information is larger 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:
step S401, acquiring state information of a brake control system.
When the judging results of the step S200 and the step 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 at this time, and the required vehicle speed for unlocking the differential lock cannot be reached. Since the brake control system is used for an operation of stopping the running vehicle or reducing the vehicle speed, it is necessary to acquire the state of the brake control system and confirm whether the vehicle is in a decelerating state.
Step 402, generating first control information according to state information of a brake control system.
And generating first control information according to the state information of the brake control system, namely, generating the first control information to control the brake control system so as to reduce the vehicle speed until the vehicle speed reaches the required speed for unlocking the differential lock, and unlocking the differential lock. By knowing the specific state of the brake control system, after the first control information is generated to reduce the vehicle speed, the unlocking of the differential lock can be realized quickly, the damage of the differential lock and the differential mechanism is avoided, and the service lives of the differential lock and the differential mechanism are prolonged.
In one 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 of the step S200 is yes, the differential lock is in a locking state; and when the judgment of the step S300 is yes, when the current moment vehicle speed information is larger than or equal to the first preset vehicle speed information; step S401 (acquiring state information of the brake control system) includes:
step S4011, acquiring state information of a clutch control valve;
typically, a clutch is used to temporarily disengage and progressively engage the engine with the transmission to cut off or transfer power input from the engine to the transmission to enable smooth operation of the vehicle; the clutch control valve is used for controlling the separation and engagement of the clutch. Before the vehicle is braked, in order to enable the vehicle to smoothly slow down, the clutch is operated firstly to cut off the power input by the engine to the transmission; therefore, the state information of the clutch control valve is acquired first.
Step 402 (generating first control information based on the state information of the brake control system) includes:
step S4021, judging whether the clutch control valve is in a closed state;
when the determination result in step S4021 is yes, the clutch control valve is in a closed state, which indicates that the clutch is in a engaged state, and the engine inputs power to the transmission, so that step S4024 needs to be executed.
If the determination result in step S4021 is no, it is indicated that the clutch control valve is in the disengaged state, that the clutch is in the disengaged state, and that the engine is disconnected from the transmission, and step S4011 is required to be executed to obtain 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 to generate third control information when the result of the determination in step S4021 is yes, where the clutch control valve is in a closed state, and the third control information is used to control the clutch control valve to be opened, so as to cut off the power input from the engine to the transmission, so that when the vehicle speed is reduced in the subsequent step, the impact of reducing the vehicle speed is reduced, and the vehicle can be reduced steadily.
In one 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 of the step S200 is yes, the differential lock is in a locking state; and when the judgment of the step S300 is yes, when the current moment vehicle speed information is larger than or equal to the first preset vehicle speed information; after step S4021 (determination of the clutch control valve being in the off state), then
Step S401 (acquiring state information of the brake control system) further includes:
step S4012, acquiring state information of a brake control valve;
when the judging results of the step S200 and the step S300 are both yes, the differential lock is in a locking state, the current moment vehicle speed information is larger than or equal to the first preset vehicle speed information, and the speed is too fast to carry out the result on the differential lock; when the step S4021 determines that the clutch control valve is in the off state, step S4012 obtains state information of the brake control valve, and further determines whether the vehicle is in an acceleration state or a deceleration state, that is, executes step S4023;
step 402 (generating the first control information based on the state information of the brake control system) further includes:
step S4023, judging whether the brake control valve is in a closed state;
when the judgment result of the step S4023 is yes, the brake control valve is in a closed state, and the fuel injection quantity of the engine is not reduced, so that the opening degree of the brake control valve needs to be adjusted, namely, the step S4024 is executed;
when 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 at this time, and the vehicle is in the deceleration state, the vehicle speed after deceleration needs to be known, that is, step S500 is performed.
Step S4024, generating fourth control information, where the fourth control information is used to control the opening of the brake control valve;
step S4024 is to indicate that the brake control valve is in a closed state when the determination result in step S4023 is yes, and then generate fourth control information, where the fourth control information is used to control the opening degree of the brake control valve; the valve degree of the control valve of the brake is reduced or disconnected at the moment, so that the aim of reducing the oil injection quantity of the transmitter can be fulfilled, and the vehicle speed is reduced, so that the vehicle speed can be reduced rapidly, and the required speed of unlocking the differential lock is reached; and further realizing quick execution of unlocking the differential lock.
In particular, it may be understood that, in order to enable the vehicle speed to be rapidly reduced, 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 to obtain a speed difference between the previous time vehicle speed information and the first preset vehicle speed information, and fourth control information is generated in combination with the preset time, where the fourth control information is used to control the opening degree of the brake control valve to be reduced, so that the speed of the current vehicle 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 further unlocking of the differential lock by the vehicle within the preset time can be achieved.
In one 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 (acquisition of first speed information after deceleration of the vehicle), the differential lock control method further includes:
step S600, judging whether the first speed information is smaller than or equal to second preset speed information;
when the judgment result of the step S600 is no, 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, i.e., step S801 is performed;
step S801, acquiring a throttle control valve state;
based on the throttle control valve state, it is known whether fuel is being provided to the engine.
Step S802, judging whether the state of an accelerator control valve is an off state;
when the judgment result of the step S802 is yes, it is indicated that the throttle control valve is in the off state, and fuel is not supplied to the engine at this time, and in order to prevent the vehicle from stopping, the step S804 is required to be executed;
when the judgment result of the step S802 is no, the throttle control valve is in a closed state, and fuel is supplied to the engine at the moment, so that the safety risk of the vehicle after stopping 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 brought by stopping the vehicle is avoided.
In a second aspect of the present application, fig. 7 is a schematic operation diagram of a differential lock controller according to the present application, as shown in fig. 7, the differential lock controller includes: the acquisition module 11 is used for acquiring differential lock state information, current moment vehicle speed information and first speed information after the vehicle is decelerated; the control module 12 is used for when the differential lock state information is in a locking state, and the current moment vehicle speed information is greater than or equal to the 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 smaller than or equal to second preset vehicle speed information, generating second control information, wherein the second control information is used for controlling unlocking of the differential lock; wherein the first preset vehicle speed information is greater than the second preset vehicle speed information. Firstly, acquiring differential lock state information and current moment vehicle speed information through an acquisition module 11; the control module 12 generates first control information according to the differential lock state information of the acquisition module 11 being in a locking state, wherein the current moment vehicle speed information is greater than or equal to first preset vehicle speed information, and the first control information is used for controlling a vehicle brake control system so as to reduce the vehicle speed; the acquisition module 11 acquires first speed information after the vehicle is decelerated, and the control module 12 generates second control information according to the acquired first speed information when the first speed information is smaller than or equal to second preset vehicle speed information, wherein the second control information is used for controlling unlocking of the differential lock; when the speed of the vehicle is too high, the differential lock of the vehicle can be quickly unlocked, so that the damage of the differential lock and the differential mechanism is avoided.
In a third aspect of the present application, fig. 8 is a schematic structural diagram of an engineering vehicle provided in the present application, as shown in fig. 8, and 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 to lock a differential to achieve a mechanism in which a left side gear and a right side gear are rigidly connected. The vehicle speed sensor 2 is 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 the vehicle speed information detected by the vehicle speed sensor 2 is larger than first preset vehicle speed information, first control information is generated, the first control information is used for controlling the vehicle braking 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 the second control information is used for controlling the differential lock to unlock, namely, the differential lock is unlocked quickly, and further damage to the differential mechanism, namely, the differential lock is avoided.
In one possible implementation, as shown in fig. 8, the engineering vehicle further includes: a brake 4; 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 maintaining a stopped state of a moving member (or 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, and 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 larger than the first preset vehicle speed information, the brake control valve 5 is controlled to be opened, and the brake 4 works to reduce the vehicle speed.
In one possible implementation, as shown in fig. 8, the engineering vehicle further includes: a clutch 6; and a clutch control valve 7 connected to the clutch connection 6, wherein the clutch control valve 7 is communicatively connected to the differential lock controller 3. The clutch 6 is used to temporarily disengage and gradually engage the engine with the transmission, cut off or transmit the 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 locking state and the vehicle speed information detected by the vehicle speed sensor 2 is larger than the first preset vehicle speed information, the vehicle can be smoothly decelerated for the operation of the brake 4 before the brake control valve 5 is controlled to be disconnected; the clutch 6 is required to temporarily separate the engine from the gearbox, and power output by the engine to the gearbox is cut off, at this time, the differential lock controller 3 is required to be in a locked 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, and the clutch control valve 6 is controlled to be disconnected so as to cut off power output by the engine to the gearbox, so that the brake 4 works to smoothly reduce the vehicle speed after the brake control valve 5 is controlled to be disconnected, and the differential lock is further enabled to reach the unlocking speed, so that the unlocking of the differential lock is realized.
Next, an electronic device 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 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 and/or information execution capabilities and may control other components in the electronic device 600 to perform desired functions.
The 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) and/or cache memory (cache), and the like. The non-volatile memory may include, for example, read Only Memory (ROM), hard disk, flash memory, and the like. One or more computer program information may be stored on the computer readable storage medium and the processor 601 may execute the program information to implement the differential lock control method or other desired functions of the various embodiments of the present application described above.
In one example, the electronic device 600 may further include: input device 603 and 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 information to the outside. The output means 604 may comprise, for example, a display, a communication network, a remote output device to which it is connected, and so forth.
Of course, only some of the components of the electronic device 600 that are relevant to the present application are shown in fig. 9 for simplicity, components such as buses, input/output interfaces, etc. are omitted. In addition, the electronic device 600 may include any other suitable components depending on the particular application.
In addition to the methods and apparatus described above, embodiments of the 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 method according to various embodiments of the application described in this specification.
The computer program product may write program code for performing 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, 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 method according to various embodiments of the present application.
The computer readable storage medium may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may include, for example, but is 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 would include the following: an electrical connection having one or more wires, a portable disk, a hard disk, random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The basic principles of the present application have been described above in connection with specific embodiments, however, it should be noted that the advantages, benefits, effects, etc. mentioned in the present application are merely examples and not intended to be limiting, and these advantages, benefits, effects, etc. are not to be considered as essential to the various embodiments of the present application. Furthermore, the specific details disclosed herein are for purposes of illustration and understanding only, and are not intended to be limiting, as the application is not necessarily limited to practice with the above described specific details.
The block diagrams of the devices, apparatuses, devices, systems referred to in the present application are only illustrative examples and are not intended to require or imply that the connections, arrangements, configurations must be made in the manner shown in the block diagrams. As will be appreciated by one of skill in the art, the devices, apparatuses, devices, systems may be connected, arranged, configured in any manner. Words such as "including," "comprising," "having," and the like are words of openness and mean "including but not limited to," and are used interchangeably therewith. The terms "or" and "as used herein refer to and are used interchangeably with the term" and/or "unless the context clearly indicates otherwise. The term "such as" as used herein refers to, and is used interchangeably with, the phrase "such as, but not limited to.
It is also noted that in the apparatus, devices and methods of the present application, the components or steps may be disassembled and/or assembled. Such decomposition and/or recombination should be considered as equivalent aspects 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 herein.
The above embodiments are merely preferred embodiments of the present application and are not intended to limit the present application, and any modifications, equivalents, etc. within the spirit and principles of the present application should be included in the scope of the present application.
Claims (7)
1. A differential lock control method, characterized by comprising:
acquiring differential lock state information and current time vehicle speed information;
when the differential lock state information is in a locking state and the current moment vehicle speed information is larger 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 so as to reduce the vehicle speed;
acquiring first speed information after the vehicle is decelerated;
when the first speed information is smaller than or equal to second preset vehicle speed information, generating second control information, wherein the second control information is used for controlling the differential lock to be unlocked;
wherein the first preset vehicle speed information is greater than the second preset vehicle speed information;
when the differential lock state information is in a locking state and the current moment vehicle speed information is greater than or equal to first preset vehicle speed information, generating first control information comprises the following steps:
when the differential lock state information is in a locking state and the current moment 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;
wherein, the braking control system further includes: a brake control valve;
when the differential lock state information is in a locking state and when the current time vehicle speed information is greater than or equal to first preset vehicle speed information, the obtaining the state information of the brake control system comprises:
when the differential lock state information is in a locking state and the current moment vehicle speed information is greater than or equal to first preset vehicle speed information, acquiring state information of the brake control valve;
wherein the generating the first control information includes:
and when the brake control valve is in a closed state, fourth control information is generated, and the fourth control information is used for controlling the opening degree of the brake control valve.
2. The differential lock control method according to claim 1, characterized in that before the differential lock state information and the current-time vehicle speed information are acquired, 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 claim 1, characterized in that the brake control system further comprises: a clutch control valve;
when the differential lock state information is in a locking state and when the current time vehicle speed information is greater than or equal to first preset vehicle speed information, the obtaining the state information of the brake control system comprises:
when the differential lock state information is in a locking state and the current moment vehicle speed information is greater than or equal to first preset vehicle speed information, acquiring state information of the clutch control valve;
wherein 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 opened.
4. 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 comprises:
when the first speed information is greater than the second preset speed information and less than the first preset speed information;
acquiring the state of an accelerator control valve;
and when the throttle control valve state is in an off state, generating fifth control information, wherein the fifth control information is used for controlling the throttle control valve to be closed.
5. A differential lock controller, comprising:
the acquisition module is used for acquiring differential lock state information, current moment vehicle speed information and first speed information after the vehicle is decelerated;
the control module is used for controlling the differential lock state information to be in a locking state according to the condition that the differential lock state information is in the locking state, and the current moment vehicle speed information is larger 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 smaller than or equal to second preset vehicle speed information, generating second control information, wherein the second control information is used for controlling the differential lock to be unlocked; wherein the first preset vehicle speed information is greater than the second preset 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 comprises the following steps:
when the differential lock state information is in a locking state and the current moment 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;
wherein, the braking control system further includes: a brake control valve;
when the differential lock state information is in a locking state and when the current time vehicle speed information is greater than or equal to first preset vehicle speed information, the obtaining the state information of the brake control system comprises:
when the differential lock state information is in a locking state and the current moment vehicle speed information is greater than or equal to first preset vehicle speed information, acquiring state information of the brake control valve;
wherein the generating the first control information includes:
and when the brake control valve is in a closed state, fourth control information is generated, and the fourth control information is used for controlling the opening degree of the brake control valve.
6. An engineering vehicle, comprising:
a differential lock;
the vehicle speed sensor is used for acquiring current vehicle speed information; and
the differential lock controller of claim 5, said differential lock controller being communicatively coupled to said vehicle speed sensor and said differential lock;
a brake; and
and the brake control valve is connected with the brake, and the brake controller control valve is in communication connection with the differential lock controller.
7. The work vehicle of claim 6, further comprising:
a clutch; and
a clutch control valve connected to the clutch, wherein,
the clutch control valve is in communication 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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| CN114198478A (en) | 2022-03-18 |
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