CN113859205A - Drainage control method and device for brake system, brake system and vehicle - Google Patents
Drainage control method and device for brake system, brake system and vehicle Download PDFInfo
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- CN113859205A CN113859205A CN202111166233.5A CN202111166233A CN113859205A CN 113859205 A CN113859205 A CN 113859205A CN 202111166233 A CN202111166233 A CN 202111166233A CN 113859205 A CN113859205 A CN 113859205A
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- drainage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/002—Air treatment devices
- B60T17/004—Draining and drying devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/04—Arrangements of piping, valves in the piping, e.g. cut-off valves, couplings or air hoses
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/06—Applications or arrangements of reservoirs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The application provides a drainage control method, a drainage control device, a drainage control system and a vehicle of a brake system, wherein the brake system comprises an air brake pipeline, and the air brake pipeline comprises an air storage cylinder and an electronic drainage valve arranged on the air storage cylinder; the drainage control method comprises the following steps: acquiring an air pressure detection value of the air brake pipeline; when the air pressure detection value is larger than or equal to a first set threshold value, generating a first control signal; the first control signal is used for controlling the electronic drain valve to be opened so as to drain water in the air cylinder; according to the drainage control method, the air pressure of the air brake pipeline is detected in real time, whether the air pressure detection value is larger than or equal to the first set threshold value or not is judged in real time, and whether the electronic drainage valve is opened or not is controlled according to the comparison result, so that water accumulated in the air storage cylinder can be timely and effectively drained.
Description
Technical Field
The application relates to a vehicle braking technology, in particular to a drainage control method and device of a braking system, the braking system and a vehicle.
Background
In the existing vehicle braking system, condensed water generated by the operation of an air compressor is accumulated on an air braking pipeline if the condensed water is not discharged in time, and the condensed water corrodes braking elements on the pipeline after a long time, such as various valve bodies and pipe joints, and the problem of braking failure caused by icing and ice blockage of the pipeline also exists in a cold area;
the drainage technology adopted in the current market can not discharge the condensed water accumulated on the air brake pipeline timely and effectively in theory.
Disclosure of Invention
In view of the above, the present application provides a drainage control method and apparatus for a brake system, a brake system and a vehicle, which solve the technical problem in the prior art that condensed water accumulated on an air brake pipeline cannot be timely and effectively discharged.
According to one aspect of the application, the application provides a drainage control method of a brake system, wherein the brake system comprises an air brake pipeline, and the air brake pipeline comprises an air storage cylinder and an electronic drainage valve arranged on the air storage cylinder; the drainage control method comprises the following steps: acquiring an air pressure detection value of the air brake pipeline; when the air pressure detection value is larger than or equal to a first set threshold value, generating a first control signal; the first control signal is used for controlling the electronic drain valve to be opened so as to drain water in the air cylinder.
In one possible implementation manner, after generating the first control signal when the air pressure detection value is greater than or equal to a first set threshold value, the drain control method further includes: generating a second control signal when the electronic drain valve is opened for a first preset time; wherein the second control signal is used for controlling the electronic drain valve to close.
In one possible implementation, the pneumatic brake circuit further comprises an intermittently operating air compressor; the drainage control method further includes: when the air pressure detection value is larger than or equal to the first set threshold value, generating a third control signal; the third control signal is used for controlling the air compressor to continuously work for a second preset time and then stop; when the air pressure detection value is smaller than a second set threshold value, generating a fourth control signal; the fourth control signal is used for controlling the air compressor to start, and the second set threshold is smaller than or equal to the first set threshold.
In one possible implementation manner, the air brake pipeline comprises a dryer and an unloading valve arranged on the dryer; wherein the unloading valve is configured as a mechanical automatic unloading valve or an electric control unloading valve; wherein the value of the unloading air pressure of the dryer is equal to the first set threshold value.
In one possible implementation, the unloader valve is configured as an electronically controlled unloader valve; the drainage control method further includes: when the air pressure detection value is larger than or equal to the first set threshold value, generating a fifth control signal; wherein the fifth control signal is used to control the unloading valve to open to unload the dryer.
In a possible implementation manner, the air pressure detection value of the air brake pipeline is configured to be obtained by detecting the air pressure in the air storage cylinder; the first preset time length is equal to the second preset time length; the second set threshold is smaller than the first set threshold; the second set threshold is configured to be the lowest air pressure value at which the air brake line is normally used.
As a second aspect of the present application, there is provided a drainage control device of a brake system, the brake system including an air brake line, the air brake line including an air reservoir and an electronic drainage valve provided in the air reservoir; the drainage control device includes: the air pressure value acquisition module is used for acquiring an air pressure detection value of the air brake pipeline; the control signal generation module is used for generating a first control signal when the air pressure detection value is greater than or equal to a first set threshold value; the first control signal is used for controlling the electronic drain valve to be opened so as to drain water in the air cylinder.
As a third aspect of the present application, there is provided a brake system comprising: the pneumatic brake system comprises an air brake pipeline, a brake system and a control system, wherein the air brake pipeline comprises an air cylinder and an electronic drain valve arranged on the air cylinder; the air pressure sensor is used for measuring the air pressure of the air brake pipeline so as to measure an air pressure detection value; and a drainage control device; the drainage control device is respectively in communication connection with the electronic drainage valve and the air pressure sensor; the drainage control device is used for controlling the electronic drainage valve to be opened to drain condensed water stored in the air brake pipeline to the air storage cylinder when the air pressure detection value is larger than or equal to a first set threshold value.
In one possible implementation, the pneumatic brake line further includes: a dryer; an unloading valve arranged on the dryer, wherein the unloading air pressure value of the unloading valve is equal to the first set threshold value; the dryer is respectively communicated with the air compressor and the air storage cylinder, and the drainage control device is in communication connection with the air compressor; the drainage control device is used for controlling the electronic drainage valve to be closed when the electronic drainage valve is opened for a first preset time; the air compressor is used for controlling the air compressor to continuously work for a second preset time and then stop when the air pressure detection value is larger than or equal to the first set threshold value; the air compressor is controlled to start when the air pressure detection value is smaller than a second set threshold value; the second set threshold is less than or equal to the first set threshold.
In one possible implementation manner, the brake system is applied to an electric automobile, and comprises a CAN bus system and a meter; the drainage control device is configured as a vehicle control unit; the air pressure sensor is arranged on the air storage cylinder; the instrument is respectively in communication connection with the air pressure sensor and the CAN bus system, and the vehicle control unit is respectively in communication connection with the CAN bus system, the electronic drain valve and the air compressor.
As a fourth aspect of the present application, there is provided a vehicle including the brake system described above.
Most of water condensed from high-temperature and high-pressure gas output by the air compressor in the air brake pipeline flows into the air storage cylinder, and the electronic drain valve in the air brake pipeline is arranged in the air storage cylinder, so that most of water in the air brake pipeline can be effectively discharged; in addition, the drainage control method provided by the application can detect the air pressure of the air brake pipeline in real time, judge whether the air pressure detection value is greater than or equal to a first set threshold value or not in real time, and control whether the electronic drainage valve is opened or not according to the comparison result; therefore, the drainage control method has real-time performance and accuracy, and is favorable for timely and effectively discharging water accumulated in the air storage cylinder.
Drawings
FIG. 1 is a schematic flow chart of a drainage control method provided herein;
fig. 2 is a block diagram illustrating a drainage control device according to the present application;
FIG. 3 is a schematic structural diagram of a braking system provided herein;
FIG. 4 is a schematic structural diagram of a braking system provided herein;
FIG. 5 is a schematic view of one cycle of operation of the air compressor shown in FIG. 4;
FIG. 6 is a schematic structural diagram of a braking system provided herein;
FIG. 7 is a schematic structural view of a braking system provided herein;
FIG. 8 is a schematic structural view of a braking system provided herein;
fig. 9 is a schematic structural diagram of an electronic device provided in 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.
In the existing electric automobile braking system, most of water condensed out from high-temperature high-pressure gas in a gas braking pipeline flows into the gas storage cylinder 1, if condensed water in the gas storage cylinder 1 is not discharged in time, a small amount of water flows into other braking elements (such as various valve bodies and pipe joints) on the gas braking pipeline along with the high-temperature high-pressure gas, and the service life of the braking elements is influenced because the condensed water accumulated in the gas braking pipeline for a long time corrodes the braking elements on the gas braking pipeline. In addition, if the condensed water in the air brake pipeline is not discharged in time in winter, the condensed water is easy to freeze to cause the pipeline ice blocking brake failure, wherein the ice blocking position caused by the condensed water which is not discharged in time is mainly concentrated at the drain valves of various valve bodies, pipe joints and the air storage cylinder 1.
Therefore, timely draining of the condensed water in the air storage cylinder 1 is an important link for ensuring the drying and cleaning of the whole air brake pipeline.
According to a first aspect of the present application, there is provided a method of controlling drainage of a brake system, wherein the brake system includes an air brake line. Specifically, the pneumatic brake line includes a plurality of brake elements.
Wherein, including gas receiver 1 and the electronic drain valve 3 of locating gas receiver 1 in a plurality of braking components. The air cylinder 1 is used for storing high-pressure air for braking.
Specifically, the electronic drain valve 3 is installed below the air cylinder 1.
Fig. 1 is a schematic flow chart of a drainage control method provided in one possible implementation manner of the present application, and fig. 3 is a schematic structural diagram of a braking system provided in one possible implementation manner of the present application; referring to fig. 1 and 3, the drain control method includes the steps of:
step S1: acquiring an air pressure detection value of an air brake pipeline;
in specific implementation, the drainage control device 4 detects the air pressure of the air brake pipeline through the air pressure sensor 2 to obtain the air pressure detection value of the air brake pipeline;
alternatively, referring to fig. 7 and 8, the drain control device 4 is a vehicle control unit 4;
step S2: when the air pressure detection value is greater than or equal to a first set threshold value, generating a first control signal; wherein, the first control signal is used for controlling the electronic drain valve 3 to be opened so as to drain the water in the air cylinder 1;
in specific implementation, the air pressure of the air brake pipeline periodically changes along with the working process of air supply and air inflation of the vehicle brake system (see fig. 5), so that the first set threshold value can be determined according to the actual change condition of the air pressure of the air brake pipeline.
By adopting the drainage control method provided by the implementation mode, the air pressure of the air brake pipeline can be detected in real time, and whether the electronic drainage valve 3 is opened or not is controlled according to the comparison result of the air pressure detection value and the first set threshold value, so that the drainage control method has real-time performance and accuracy, is favorable for timely and effectively draining condensed water in the air storage cylinder 1, and is favorable for avoiding adverse effects (corrosion, icing and the like) of the condensed water on a brake element on the air brake pipeline.
In one possible implementation, referring to fig. 1 and 3, after step S2 (when the air pressure detection value is greater than or equal to the first set threshold, the first control signal is generated), the drainage control method further includes step S3:
when the electronic drain valve 3 is opened for a first preset time length, generating a second control signal; wherein the second control signal is used for controlling the electronic drain valve 3 to close.
In specific implementation, the valve core of the electronic drain valve 3 is very small, and the electronic drain valve 3 is opened for a first preset time period to drain condensed water in the air reservoir 1.
Alternatively, the first preset time period may be set to 5 seconds.
Fig. 4 is a schematic structural diagram of a braking system provided in one possible implementation manner of the present application, and fig. 5 is a schematic diagram of one working cycle of the air compressor 5 shown in fig. 4; referring to fig. 4 and 5, in the present implementation, the plurality of braking elements of the air braking system further include an air compressor 5 that operates intermittently; the air compressor 5 is a source of air pressure in the whole air brake system, and has the function of compressing air at normal temperature and normal pressure into high-temperature and high-pressure air which is delivered to each brake element.
Alternatively, the air compressor 5 is an electric air compressor 5, wherein, referring to fig. 7 and 8, the electric air compressor 5 is correspondingly provided with an air compressor controller 10, the water discharge control device 4 controls the start and stop of the air compressor 5 through the air compressor controller 10, and the air compressor 5 is operated intermittently (as shown in fig. 5) in order to reduce energy loss.
Specifically, referring to fig. 1, the drainage control method further includes step S4:
when the air pressure detection value is greater than or equal to the first set threshold value, generating a third control signal; the third control signal is used for controlling the air compressor 5 to stop after continuously working for a second preset time;
specifically, the second preset time period of the air compressor 5 is determined according to the opening time period (first preset time period) of the electronic drain valve 3.
In specific implementation, the first set threshold is an unloading air pressure value of an air brake pipeline; the unloading air pressure refers to the maximum air pressure of the whole vehicle according to the legal requirements, when the air compressor 5 drives the air pressure of the air brake pipeline to the unloading air pressure, the air brake pipeline is automatically unloaded, and at the moment, the air pressure of the whole vehicle (the air pressure of the air brake pipeline) is maintained at the value and does not rise any more.
When the air pressure detection value of the air brake pipeline reaches the first set threshold value, the air brake pipeline is unloaded, meanwhile, the air compressor 5 is controlled to continue to work for a second preset time period and then stops, the second preset time period is set to complement the part of the air brake pipeline, which is caused by the reduction of the air pressure due to the loss of part of air when the electronic drain valve 3 is opened to discharge the condensed water in the air storage cylinder 1 in the step S2 or the step S3, so that the air pressure detection value of the air brake pipeline is maintained near the unloading air pressure value as much as possible.
Optionally, the second preset time period is equal to the first preset time period, for example, both the first preset time period and the second preset time period are set to 5 seconds, that is, the electronic drain valve 3 fully drains the condensed water generated by one working cycle of the air compressor 5 by using 5 seconds of the continuous operation of the air compressor 5.
Optionally, the size relationship between the second preset duration and the first preset duration and the specific duration may be set according to an actual situation.
Fig. 7 and 8 are schematic structural diagrams of a braking system provided in a possible implementation manner of the present application, wherein a dryer 6 and an unloading valve 7 disposed on the dryer 6 are further included in a plurality of braking elements of the pneumatic braking system; because the unloading valve 7 is arranged on the dryer 6, the unloading air pressure value of the air brake pipeline is also called as the unloading air pressure value of the dryer 6 or the unloading air pressure value of the unloading valve 7; when the air pressure detection value of the air brake pipeline reaches the unloading air pressure value, the air brake pipeline is unloaded through an unloading valve 7 of the dryer 6.
In the present implementation, as shown in fig. 1 and 7, step S4 is configured to determine whether to control the air compressor 5 to stop by comparing the air pressure detection value with the unloading air pressure value;
in another implementation, as shown in fig. 8, the air pressure switch 11 may be implemented by an air pressure switch 11 disposed on the air brake pipe, where the air pressure switch 11 is provided with an air pressure threshold, and specifically, when the air pressure detection value of the air brake pipe reaches the air pressure threshold of the air pressure switch 11, the drainage control device controls the air compressor 5 to stop by obtaining an electric feedback signal generated by opening or closing the air pressure switch 11, where the air pressure threshold of the air pressure switch 11 is equal to the unloading air pressure value.
In one possible implementation, referring to fig. 7 and 8, the unloading valve 7 is configured as a mechanical automatic unloading valve, and when the air pressure of the dryer 6 (the air pressure of the air brake line) reaches the unloading air pressure, the unloading valve 7 is pushed open by the air.
Specifically, the control port of the dryer 6 is provided with the above-mentioned air pressure switch 11, and the air pressure switch 11 outputs a signal in the form of an electric signal, that is, the air pressure switch 11 is normally not powered and becomes a power-on state when an unloading air pressure value is reached.
Because the unloading valve 7 is of a pure mechanical structure, the actual exhaust air pressure of the unloading valve 7 is deviated from the target exhaust air pressure (unloading air pressure), and therefore, the air compressor 5 in the step S4 is stopped after being controlled to continue to operate for the second preset time, which is also beneficial to ensuring that the actual air pressure in the dryer 6 can overcome the deviation to reach the unloading air pressure, so that the unloading valve 7 exhausts normally.
In one possible implementation, as shown with reference to fig. 1 and 6, the unloading valve 7 is configured as an electrically controlled unloading valve;
wherein, the drainage control method further comprises the step of S6: when the air pressure detection value is greater than or equal to the first set threshold value, generating a fifth control signal; wherein, the fifth control signal is used for controlling the unloading valve 7 to be opened so as to unload the dryer 6;
in specific implementation, the unloading time of the unloading valve 7 can be configured to be equal to a first preset time or a second preset time.
In a possible implementation manner, referring to fig. 1, after step S4 is executed (when the air pressure detection value is greater than or equal to the first set threshold value, a third control signal is generated, where the third control signal is used to control the air compressor 5 to continue to operate for a second preset time period and then to stop), the air pressure in the air brake pipeline starts to decrease, and when the air pressure detection value is smaller than the second set threshold value, the air compressor 5 is controlled by the vehicle control unit 4 to restart; namely, step S5 is executed:
when the air pressure detection value is smaller than a second set threshold value, generating a fourth control signal; the fourth control signal is used for controlling the air compressor 5 to start, and the second set threshold is smaller than or equal to the first set threshold.
Specifically, referring to fig. 5, the second set threshold is a starting air pressure value; the starting air pressure is the lowest air pressure of an air brake pipeline which can ensure the normal running of the electric automobile; when the air pressure detection value of the air brake pipeline is lower than the starting air pressure value, the wheel locking phenomenon can occur on the middle rear axle of the electric automobile.
In specific implementation, referring to fig. 7 or 8, the air pressure sensor 2 detects the air pressure of the air cylinder 1 in real time, converts the air pressure detection value into an electric signal and feeds the electric signal back to the instrument 8 of the electric vehicle, and the instrument 8 interprets specific data according to the electric signal to display the air pressure detection value of the air brake pipeline in real time and transmits the data to the vehicle control unit 4 through the CAN bus system 9; and the vehicle control unit 4 compares and analyzes the air pressure detection value and the starting air pressure value, and when the air pressure detection value of the air brake pipeline is lower than the starting air pressure value, the vehicle control unit 4 restarts the air compressor 5 through the air compressor controller 10.
Referring to fig. 1, in combination with the steps S2, S3, S4, and S5, in the drainage control method provided in the present application, the electronic drainage valve 3 is opened for a first preset time period when the air brake pipe is unloaded, and the air compressor 5 continues to operate for a second preset time period when the electronic drainage valve 3 is opened, so that the electronic drainage valve 3 in the present application can timely and effectively drain the condensed water generated during each operation of the air compressor 5.
During specific implementation, when the dryer 6 is unloaded, the vehicle control unit 4 acquires a feedback electric signal from the air pressure switch 11, or the vehicle control unit 4 judges that an air pressure detection value of the air brake pipeline is greater than or equal to an unloading air pressure value, the air compressor 5 continues to work for 5 seconds, the electronic drain valve 3 fully drains condensed water generated when the air compressor 5 completes one work cycle by utilizing the time of 5 seconds when the air compressor 5 continues to work, and the air brake pipeline is ensured to be clean and dry.
As a second aspect of the present application, there is provided a drainage control device 4.
Specifically, fig. 2 is a block diagram of a drainage control device 4 provided in a possible implementation manner of the present application, where an air brake pipeline includes an air reservoir 1 and an electronic drainage valve 3 disposed in the air reservoir 1, and the drainage control device 4 includes an air pressure value obtaining module 41 and a control signal generating module 42;
the air pressure value obtaining module 41 is configured to obtain an air pressure detection value of an air brake pipeline; the control signal generating module 42 is configured to generate a first control signal when the air pressure detection value is greater than or equal to a first set threshold; wherein the first control signal is used for controlling the electronic drain valve 3 to open to drain the water in the air cylinder 1.
Please refer to the first aspect of the present application for a specific structure of the drainage control device 4 and its advantageous effects.
As a third aspect of the present application, a braking system is provided.
Specifically, fig. 3 is a schematic diagram of a braking system provided in one possible implementation of the present application;
the connection relationships (electrical, pneumatic, and mechanical) between various components of the braking system, including but not limited to the braking components, are shown.
The brake system comprises an air brake pipeline, an air pressure sensor 2 and the drainage control device 4;
specifically, the air brake pipeline comprises an air cylinder 1 and an electronic drain valve 3 arranged on the air cylinder 1; (ii) a
Specifically, the air pressure sensor 2 is used for measuring the air pressure of the air brake pipe to measure an air pressure detection value;
specifically, the drain control device 4 is in communication connection with the electronic drain valve 3 and the air pressure sensor 2, respectively;
specifically, the drainage control device 4 is used for controlling the electronic drainage valve 3 to be opened to drain the condensed water flowing and stored in the air brake pipeline to the air storage cylinder 1 when the air pressure detection value is greater than or equal to a first set threshold value.
In a possible implementation manner, referring to fig. 4, 5, 7 and 8, the air brake pipeline further includes a dryer 6, an unloading valve 7 disposed on the dryer 6, and an air compressor 5 that operates intermittently, wherein an unloading air pressure value of the unloading valve 7 is equal to a first set threshold value; the dryer 6 is respectively communicated with the air compressor 5 and the air storage cylinder 1 through air passages, and the drainage control device 4 is in communication connection with the air compressor 5.
The air compressor 5 is used for converting the gas at normal temperature and normal pressure into the gas at high temperature and high pressure; since the air itself contains moisture, when the high temperature gas encounters the low temperature braking element, the moisture condenses out.
The dryer 6 has a function of absorbing moisture and discharging the absorbed moisture each time the air is unloaded, and although the dryer 6 is the most important braking element for drying the air in the whole air brake pipeline, the dryer 6 has a limited function of drying the air, cannot completely dry the air, and has residual moisture in the air; even if the gas flowing out of the dryer 6 is cooled, moisture may be condensed.
As most of water flows into the air storage cylinder 1 along with the air brake pipeline, the electronic drain valve 3 is arranged on the air storage cylinder 1 and can effectively drain the water in the air storage cylinder 1 in time, thereby having great significance for the whole air brake pipeline.
Specifically, the drain control device 4 is configured to control the electronic drain valve 3 to close when the electronic drain valve 3 is opened for a first preset time period; the air compressor control device is used for controlling the air compressor 5 to continuously work for a second preset time and then stop when the air pressure detection value is larger than or equal to a first set threshold value; and is used for controlling the air compressor 5 to start when the air pressure detection value is smaller than a second set threshold value; the second set threshold is less than or equal to the first set threshold.
Specifically, referring to fig. 7 and 8, the brake system is applied to an electric vehicle, and includes a CAN bus system 9, an instrument 8, and an air compressor controller 10; the drain control device 4 is configured as a vehicle control unit 4; wherein, the air pressure sensor 2 is arranged on the air cylinder 1; the instrument 8 is respectively in communication connection with the air pressure sensor 2 and the CAN bus system 9, and the vehicle control unit 4 is respectively in communication connection with the CAN bus system 9, the air compressor controller 10 and the electronic drain valve 3; the vehicle control unit 4 is in communication connection with the air compressor controller 10 to realize communication with the air compressor 5.
In specific implementation, one embodiment is as follows: the air pressure sensor 2 detects the air pressure of the air storage cylinder 1 in real time, converts the air pressure detection value into an electric signal and feeds the electric signal back to the instrument 8 of the electric automobile, the instrument 8 decodes specific data according to the electric signal to display the air pressure detection value of an air brake pipeline in real time, and transmits the data to the vehicle control unit 4 through the CAN bus system 9; the whole vehicle controller 4 compares and analyzes the air pressure detection value and the starting air pressure value, or the air pressure detection value and the unloading air pressure value;
when the comparison result shows that the air pressure detection value of the air brake pipeline is greater than or equal to the unloading air pressure value, the vehicle control unit 4 sends an instruction to the air compressor controller 10 to control the air compressor 5 to continue to work for a second preset time period and then stop;
and when the comparison result shows that the air pressure detection value of the air brake pipeline is smaller than the starting air pressure value, the vehicle control unit 4 sends an instruction to the air compressor controller 10 to control the air compressor 5 to restart.
In specific implementation, another embodiment is as follows: the whole vehicle controller 4 controls the shutdown of the air compressor 5 through the air pressure switch 11 installed at the control port of the dryer 6, namely, when the air pressure of the dryer 6 reaches the unloading air pressure, the air pressure switch 11 is opened or closed to generate an electric signal and feed the electric signal back to the whole vehicle controller 4, and the whole vehicle controller 4 controls the shutdown of the air compressor 5 through the air compressor controller 10;
in this embodiment, the vehicle control unit 4 obtains the air pressure detection value of the air brake pipeline through the air pressure sensor 2, compares the air pressure detection value with the starting air pressure value, and determines whether to control the air compressor 5 to start according to the comparison result, that is, the same as the previous embodiment.
In a possible implementation mode, a rocker switch can be added in the braking system, the rocker switch is integrated into the instrument 8 through a hard wire, the opening action of the electronic drain valve 3 is controlled through the instrument 8, the function can realize manual drainage during parking, and the problems that the pressure value of air pressure in an air braking pipeline does not reach the unloading pressure value and the electronic drain valve 3 cannot be automatically opened during parking and warehousing are avoided.
As a fourth aspect of the present application, there is provided a vehicle including the brake system described above.
Please refer to the third aspect of the present application for a specific structure and an effect of the braking system adopted by the vehicle provided by the present application.
Optionally, the vehicle is a work vehicle or a general vehicle.
Optionally, the vehicle is an electric car.
An electronic device according to an embodiment of the 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.
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 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 nonvolatile memory. Volatile memory can include, for example, Random Access Memory (RAM), and/or cache memory (cache), among others. The non-volatile memory may include, for example, Read Only Memory (ROM), a hard disk, flash memory, and the like. One or more computer program information may be stored on a computer readable storage medium and executed by the processor 601 to implement the drainage 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 a method of controlling drainage according to various embodiments of the present application described in the present specification.
The computer program product may include program code for carrying out operations for 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 drainage control method according to various embodiments of the present application.
A 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. 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 words" 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, each element or step can be decomposed and/or recombined. These decompositions and/or recombinations should be considered 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-mentioned embodiments are merely preferred embodiments of the present invention, which should not be construed as limiting the scope of the present invention, and any modifications, equivalents and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (11)
1. The drainage control method of the brake system is characterized in that the brake system comprises an air brake pipeline, wherein the air brake pipeline comprises an air storage cylinder and an electronic drainage valve arranged on the air storage cylinder; the drainage control method comprises the following steps:
acquiring an air pressure detection value of the air brake pipeline; and
when the air pressure detection value is greater than or equal to a first set threshold value, generating a first control signal; the first control signal is used for controlling the electronic drain valve to be opened so as to drain water in the air cylinder.
2. The drain control method according to claim 1, wherein after generating the first control signal when the air pressure detection value is greater than or equal to a first set threshold value, the drain control method further comprises:
generating a second control signal when the electronic drain valve is opened for a first preset time; wherein the second control signal is used for controlling the electronic drain valve to close.
3. The drain control method according to claim 2, wherein the air brake line further includes an intermittently operated air compressor; the drainage control method further includes:
when the air pressure detection value is larger than or equal to the first set threshold value, generating a third control signal; the third control signal is used for controlling the air compressor to continuously work for a second preset time and then stop; and
when the air pressure detection value is smaller than a second set threshold value, generating a fourth control signal; the fourth control signal is used for controlling the air compressor to start, and the second set threshold is smaller than or equal to the first set threshold.
4. The drainage control method according to claim 3, wherein the air brake line includes a dryer and an unloading valve provided in the dryer;
wherein the unloading valve is configured as a mechanical automatic unloading valve or an electric control unloading valve;
wherein the value of the unloading air pressure of the dryer is equal to the first set threshold value.
5. The drain control method according to claim 4, wherein the unloading valve is configured as an electrically controlled unloading valve; the drainage control method further includes:
when the air pressure detection value is larger than or equal to the first set threshold value, generating a fifth control signal; wherein the fifth control signal is used to control the unloading valve to open to unload the dryer.
6. The drainage control method according to claim 4, wherein the air pressure detection value of the air brake line is configured to be obtained by detecting air pressure in the air reservoir; the first preset time length is equal to the second preset time length; the second set threshold is smaller than the first set threshold; the second set threshold is configured to be the lowest air pressure value at which the air brake line is normally used.
7. The drainage control device of the brake system is characterized in that the brake system comprises an air brake pipeline, wherein the air brake pipeline comprises an air storage cylinder and an electronic drainage valve arranged on the air storage cylinder; the drainage control device includes:
the air pressure value acquisition module is used for acquiring an air pressure detection value of the air brake pipeline; and
the control signal generation module is used for generating a first control signal when the air pressure detection value is greater than or equal to a first set threshold value; the first control signal is used for controlling the electronic drain valve to be opened so as to drain water in the air cylinder.
8. A braking system, comprising:
the pneumatic brake system comprises an air brake pipeline, a brake system and a control system, wherein the air brake pipeline comprises an air cylinder and an electronic drain valve arranged on the air cylinder;
the air pressure sensor is used for measuring the air pressure of the air brake pipeline so as to measure an air pressure detection value; and
a drainage control device;
the drainage control device is respectively in communication connection with the electronic drainage valve and the air pressure sensor;
the drainage control device is used for controlling the electronic drainage valve to be opened to drain condensed water stored in the air brake pipeline to the air storage cylinder when the air pressure detection value is larger than or equal to a first set threshold value.
9. The brake system of claim 8, wherein the pneumatic brake line further comprises:
a dryer;
an unloading valve arranged on the dryer, wherein the unloading air pressure value of the unloading valve is equal to the first set threshold value; and
the air compressor intermittently works, wherein the dryer is respectively communicated with the air compressor and the air storage cylinder, and the drainage control device is in communication connection with the air compressor;
the drainage control device is used for controlling the electronic drainage valve to be closed when the electronic drainage valve is opened for a first preset time; the air compressor is used for controlling the air compressor to continuously work for a second preset time and then stop when the air pressure detection value is larger than or equal to the first set threshold value; the air compressor is controlled to start when the air pressure detection value is smaller than a second set threshold value; the second set threshold is less than or equal to the first set threshold.
10. The brake system according to claim 9, applied to an electric vehicle, comprising a CAN bus system and a meter; the drainage control device is configured as a vehicle control unit;
the air pressure sensor is arranged on the air storage cylinder; the instrument is respectively in communication connection with the air pressure sensor and the CAN bus system, and the vehicle control unit is respectively in communication connection with the CAN bus system, the electronic drain valve and the air compressor.
11. A vehicle comprising a braking system according to any one of claims 8 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111166233.5A CN113859205B (en) | 2021-09-30 | 2021-09-30 | Drainage control method and device of braking system, braking system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111166233.5A CN113859205B (en) | 2021-09-30 | 2021-09-30 | Drainage control method and device of braking system, braking system and vehicle |
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| Publication Number | Publication Date |
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| CN113859205A true CN113859205A (en) | 2021-12-31 |
| CN113859205B CN113859205B (en) | 2023-09-22 |
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| CN202111166233.5A Active CN113859205B (en) | 2021-09-30 | 2021-09-30 | Drainage control method and device of braking system, braking system and vehicle |
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| CN113859205B (en) | 2023-09-22 |
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