CN113859205B - Drainage control method and device of braking system, braking system and vehicle - Google Patents
Drainage control method and device of braking system, braking system and vehicle Download PDFInfo
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- CN113859205B CN113859205B CN202111166233.5A CN202111166233A CN113859205B CN 113859205 B CN113859205 B CN 113859205B CN 202111166233 A CN202111166233 A CN 202111166233A CN 113859205 B CN113859205 B CN 113859205B
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- air pressure
- control signal
- set threshold
- 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 braking system, wherein the braking system comprises an air braking pipeline, and the air braking pipeline comprises an air storage cylinder and an electronic drainage valve arranged on the air storage cylinder; the drainage control method includes: acquiring an air pressure detection value of the air brake pipeline; and 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 storage cylinder; according to the drainage control method provided by the application, 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 is judged in real time, and whether the electronic drainage valve is opened is controlled according to the comparison result, so that the water accumulated in the air reservoir 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, if the condensed water generated by the operation of an air compressor is not discharged in time, the condensed water can accumulate on an air braking pipeline, and after a long time, the condensed water can corrode braking elements on the pipeline, such as various valve bodies and pipe joints, and the problem that the pipeline is frozen and blocked to cause braking failure exists in cold areas;
the drainage technology adopted in the current market cannot theoretically drain the condensed water accumulated on the air brake pipeline timely and effectively.
Disclosure of Invention
In view of the above, the application provides a drainage control method and device for a brake system, the brake system and a vehicle, and solves the technical problem that condensed water accumulated on an air brake pipeline cannot be timely and effectively discharged in the prior art.
According to one aspect of the present application, there is provided a drainage control method of a brake system including a pneumatic brake line including an air reservoir and an electronic drainage valve provided to the air reservoir; the drainage control method includes: acquiring an air pressure detection value of the air brake pipeline; and 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.
In one possible implementation, after generating the first control signal when the air pressure detection value is greater than or equal to a first set threshold value, the drainage control method further includes: when the electronic drain valve is opened for a first preset time period, generating a second control signal; the second control signal is used for controlling the electronic drain valve to be closed.
In one possible implementation, the pneumatic brake line further comprises an intermittently operated air compressor; the drainage control method further includes: generating a third control signal when the air pressure detection value is greater than or equal to the first set threshold value; the third control signal is used for controlling the air compressor to stop after continuously working for a second preset time period; and generating a fourth control signal when the air pressure detection value is smaller than a second set threshold value; 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, the pneumatic 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 unloading air pressure value of the dryer is equal to the first set threshold value.
In one possible implementation, the unloading valve is configured as an electrically controlled unloading valve; the drainage control method further includes: generating a fifth control signal when the air pressure detection value is greater than or equal to the first set threshold value; wherein the fifth control signal is used for controlling the unloading valve to be opened so as to unload the dryer.
In one possible implementation, 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 duration is equal to the second preset duration; the second set threshold is smaller than the first set threshold; the second set threshold is configured to be a 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 drain control device of a brake system including a pneumatic brake line including an air reservoir and an electronic drain valve provided to 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; and a control signal generation module 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, the present application provides a brake system comprising: the air brake pipeline comprises an air reservoir and an electronic drain valve arranged on the air reservoir; 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; a drainage control device; the drainage control device is respectively in communication connection with the electronic drainage valve and the air pressure sensor; and the drainage control device is used for controlling the electronic drainage valve to be opened so as to drain the 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; the unloading valve is arranged in the dryer, wherein the unloading air pressure value of the unloading valve is equal to the first set threshold value; the dryer is communicated with the air compressor and the air storage cylinder air circuit respectively, and the drainage control device is connected with the air compressor in a communication way; 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 duration; when the air pressure detection value is larger than or equal to the first set threshold value, controlling the air compressor to continue working for a second preset time period and stopping the air compressor; and 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, the braking system is applied to an electric vehicle, and the braking system comprises a CAN bus system and an instrument; the drainage control device is configured as a whole vehicle controller; wherein the air pressure sensor is arranged on the air cylinder; the instrument is respectively in communication connection with the air pressure sensor and the CAN bus system, and the whole vehicle controller 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, the present application provides a vehicle including the above-described brake system.
Most of water condensed by high-temperature and high-pressure gas output by the air compressor in the air brake pipeline flows and is stored in the air storage cylinder, and most of water in the air brake pipeline can be effectively discharged because the electronic drain valve is arranged in the air storage cylinder; 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 the first set threshold value in real time, and control whether the electronic drainage valve is opened according to the comparison result; therefore, the drainage control method provided by the application has real-time performance and accuracy, and is beneficial to timely and effectively draining the accumulated moisture in the air reservoir.
Drawings
FIG. 1 is a schematic flow chart of a drainage control method according to the present application;
FIG. 2 is a block diagram showing a drainage control device according to the present application;
FIG. 3 is a schematic diagram of a brake system according to the present application;
FIG. 4 is a schematic diagram of a brake system according to the present application;
fig. 5 is a schematic view of one working cycle of the air compressor shown in fig. 4;
FIG. 6 is a schematic diagram of a brake system according to the present application;
FIG. 7 is a schematic diagram of a brake system according to the present application;
FIG. 8 is a schematic diagram of a brake system according to the present application;
fig. 9 is a schematic structural diagram of an electronic device according to the present 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.
In the existing electric automobile braking system, most of water condensed by high-temperature and high-pressure gas in a gas braking pipeline flows into the gas storage cylinder 1, if the condensed water in the gas storage cylinder 1 is not drained in time, a small part 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 and high-pressure gas, and the condensed water accumulated in the gas braking pipeline for a long time can corrode the braking elements on the gas braking pipeline, so that the service life of the braking elements is influenced. In addition, if the condensed water in the air brake pipeline is not timely discharged in winter, the condensed water is easy to freeze to cause the pipeline ice blockage braking failure, wherein the ice blockage position caused by the condensed water which is not timely discharged is mainly concentrated at the drain valves of various valve bodies, pipe joints and air cylinders 1.
Therefore, timely draining of condensed water of the air cylinder 1 is an important link for guaranteeing 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 the drainage of a brake system, wherein the brake system comprises a pneumatic brake line. In particular, the pneumatic brake line includes a plurality of brake elements.
The plurality of braking elements comprise an air reservoir 1 and an electronic drain valve 3 arranged on the air reservoir 1. The air cylinder 1 has the function of storing high-pressure air for use in braking.
Specifically, an electronic drain valve 3 is installed below the air cylinder 1.
Fig. 1 is a schematic flow chart of a drainage control method according to one possible implementation of the present application, and fig. 3 is a schematic structural diagram of a braking system according to one possible implementation of the present application; referring to fig. 1 and 3, the drainage control method includes the steps of:
step S1: acquiring an air pressure detection value of an air brake pipeline;
in the specific implementation, the drainage control device 4 detects the air pressure of the air brake pipeline through the air pressure sensor 2 to obtain an air pressure detection value of the air brake pipeline;
alternatively, referring to fig. 7 and 8, the drainage control device 4 is the vehicle control unit 4;
step S2: generating a first control signal when the air pressure detection value is greater than or equal to a first set threshold value; wherein the first control signal is used for controlling the electronic drain valve 3 to be opened so as to drain water in the air reservoir 1;
in particular, the air pressure of the air brake pipeline periodically changes along with the working process of air utilization and inflation of the vehicle brake system (refer to 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 instantaneity and accuracy, is favorable for timely and effectively draining the condensed water in the air reservoir 1, and is favorable for avoiding adverse effects (corrosion, icing and the like) caused by the condensed water to the brake element on the air brake pipeline.
In one possible implementation manner, 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 value, the first control signal is generated), the drainage control method further includes step S3:
generating a second control signal when the electronic drain valve 3 is opened for a first preset period of time; wherein the second control signal is used for controlling the electronic drain valve 3 to be closed.
In specific implementation, the valve core of the electronic drain valve 3 is small, and the drain control device 4 needs to control the electronic drain valve 3 to open for a first preset period of time to drain the 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 according to a possible implementation of the present application, and fig. 5 is a schematic diagram of one working cycle of the air compressor 5 shown in fig. 4; as shown in fig. 4 and 5, in the present implementation manner, the plurality of braking elements of the air brake system further includes an intermittently operated air compressor 5; the air compressor 5 is an air pressure source in the whole air braking system, and has the effect of compressing air at normal temperature and normal pressure into high-temperature and high-pressure air to be delivered to each braking 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, and the water drainage control device 4 controls the starting and stopping of the air compressor 5 through the air compressor controller 10, so that the air compressor 5 intermittently works (as shown in fig. 5) to reduce energy loss.
Specifically, referring to fig. 1, the drainage control method further includes step S4:
generating a third control signal when the air pressure detection value is greater than or equal to a first set threshold value; the third control signal is used for controlling the air compressor 5 to stop after continuously working for a second preset time period;
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 value is an unloading air pressure value of the air brake pipeline; the unloading air pressure is the maximum air pressure of the whole vehicle according to the regulation requirement, when the air compressor 5 presses the air pressure of the air brake pipeline to the unloading air pressure, the air brake pipeline automatically unloads, and the air pressure of the whole vehicle (the air pressure of the air brake pipeline) is maintained at the value and does not rise.
When the air pressure detection value of the air brake pipeline reaches a first set threshold value, the air brake pipeline is unloaded, and at the same time, the air compressor 5 is controlled to continue to work for a second preset time period, and then the air compressor is stopped, wherein the second preset time period is set to complement the part of the air brake pipeline, which is reduced in air pressure due to loss of part of air when the electronic drain valve 3 in the step S2 or the step S3 is opened to drain the condensed water in the air reservoir 1, 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 duration is equal to the first preset duration, for example, the first preset duration and the second preset duration are both set to 5 seconds, that is, the electronic drain valve 3 continues to work for 5 seconds by using the air compressor 5, so as to fully drain condensed water generated by one working cycle of the air compressor 5.
Optionally, the magnitude relation between the second preset time period and the first preset time period and the specific time period can be set according to actual situations.
Fig. 7 and 8 are schematic structural views of a braking system according to a possible implementation manner of the present application, wherein a plurality of braking elements of the pneumatic braking system further include a dryer 6 and an unloading valve 7 disposed on the dryer 6; since the unloading valve 7 is provided to the dryer 6, the unloading air pressure value of the air brake line is also called 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 the unloading valve 7 of the dryer 6.
In this 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 and the unloading air pressure value;
in other implementations, as shown in fig. 8, the air pressure switch 11 may be implemented by means of an air pressure switch 11 disposed on the air brake pipe, where the air pressure switch 11 is provided with an air pressure threshold, 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 acquiring an electrical 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, with reference to fig. 7 and 8, the unloading valve 7 is configured as a mechanical automatic unloading valve, the unloading valve 7 being gas-pushed open when the gas pressure of the dryer 6 (the gas pressure of the gas brake line) reaches the unloading gas pressure.
Specifically, the control port of the dryer 6 is provided with the above-described 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 unpowered and becomes an energized state when reaching the unloading air pressure value.
Because the unloading valve 7 is of a purely mechanical structure, the deviation between the actual exhaust air pressure of the unloading valve 7 and the target exhaust air pressure (unloading air pressure) is caused, so that the air compressor 5 in the step S4 is controlled to continue to work for a second preset time period and then stops, and the actual air pressure in the dryer 6 can overcome the deviation to reach the unloading air pressure, so that the unloading valve 7 can exhaust normally.
In one possible implementation, with reference to fig. 1 and 6, the unloading valve 7 is configured as an electrically controlled unloading valve;
the drainage control method further comprises the step S6 of: generating a fifth control signal when the air pressure detection value is greater than or equal to the first set threshold value; wherein the fifth control signal is used for controlling the unloading valve 7 to open so as to unload the dryer 6;
in particular, the unloading duration of the unloading valve 7 may be configured to be equal to the first preset duration or the second preset duration.
In one possible implementation manner, referring to fig. 1, after step S4 (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 work for a second preset period of time and then stop), the air pressure in the air brake pipeline starts to drop, and when the air pressure detection value is less than the second set threshold value, the air compressor 5 is controlled to restart by the vehicle controller 4; that is, step S5 is performed:
generating a fourth control signal when the air pressure detection value is smaller than the second set threshold value; 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 capable of ensuring the electric automobile to normally run; 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 in the middle and rear axles of the electric automobile.
In the implementation, referring to fig. 7 or 8, the air pressure sensor 2 detects the air pressure of the air reservoir 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, and the instrument 8 decodes and reads 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 whole vehicle controller 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, and when the air pressure detection value of the air brake pipeline is lower than the starting air pressure value, the whole vehicle controller 4 restarts the air compressor 5 through the air compressor controller 10.
Referring to fig. 1, in combination with step S2, step S3, step S4, and step S5, in the drainage control method provided by the present application, the electronic drainage valve 3 is opened for a first preset time period when the pneumatic brake pipeline 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 by each operation of the air compressor 5.
In specific implementation, when the dryer 6 is unloaded, the whole vehicle controller 4 acquires a feedback electric signal from the air pressure switch 11, or when the whole vehicle controller 4 judges that the air pressure detection value of the air brake pipeline is greater than or equal to the unloading air pressure value, the air compressor 5 continues to work for 5 seconds, and the electronic drain valve 3 fully drains condensed water generated when the air compressor 5 completes one working cycle by utilizing the 5 second time of the continuous work of the air compressor 5, so that the cleaning and drying of the air brake pipeline are ensured.
As a second aspect of the present application, the present application provides a drainage control device 4.
Specifically, fig. 2 shows a block diagram of a drain control device 4 according to one possible implementation of the present application, where the air brake pipeline includes an air reservoir 1 and an electronic drain valve 3 disposed in the air reservoir 1, and the drain control device 4 includes an air pressure value acquisition module 41 and a control signal generation module 42;
wherein, the air pressure value obtaining module 41 is used for obtaining an air pressure detection value of the air brake pipeline; the control signal generation 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 value; wherein the first control signal is used for controlling the electronic drain valve 3 to open so as to drain the water in the air reservoir 1.
The specific structure of the drainage control device 4 provided by the application and the beneficial effects thereof refer to the first aspect of the application.
As a third aspect of the present application, the present application provides a brake system.
Specifically, fig. 3 is a schematic diagram of a braking system according to one possible implementation of the present application;
the connection (electrical, pneumatic, and mechanical) between the various components of the brake system, including but not limited to the brake components, is shown.
The braking system comprises an air braking pipeline, an air pressure sensor 2 and the drainage control device 4;
specifically, the air brake pipeline comprises an air reservoir 1 and an electronic drain valve 3 arranged on the air reservoir 1; the method comprises the steps of carrying out a first treatment on the surface of the
Specifically, the air pressure sensor 2 is used for measuring the air pressure of the air brake pipeline to measure an air pressure detection value;
specifically, the drain control device 4 is respectively in communication connection with the electronic drain valve 3 and the air pressure sensor 2;
specifically, the drain control device 4 is configured to control the electronic drain valve 3 to open to drain the condensed water stored in the air reservoir 1 by the air brake line flow when the air pressure detection value is greater than or equal to the first set threshold value.
In one possible implementation manner, referring to fig. 4, 5, 7 and 8, the air brake pipeline further includes a dryer 6, an unloading valve 7 provided on the dryer 6, and an intermittently operating air compressor 5, 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 cylinder 1 in an air way, and the drainage control device 4 is in communication connection with the air compressor 5.
The air compressor 5 changes the normal temperature and pressure gas into high temperature and high pressure gas; since the air itself contains moisture, when the high temperature gas encounters the low temperature braking element, the moisture condenses out.
The function of the dryer 6 is to absorb moisture, drain the moisture absorbed by the dryer 6 during each unloading, and the dryer 6 is the most important braking element for drying the gas in the whole air braking pipeline, but the function of the dryer 6 for drying the gas is limited, the gas cannot be completely dried, and moisture residues exist in the gas; even the gas flowing out of the dryer 6 may condense out moisture as long as it is cooled down.
Since most of the moisture is stored in the air reservoir 1 along with the air brake pipeline, the electronic drain valve 3 is arranged in the air reservoir 1, and timely and effectively discharges the moisture in the air reservoir 1, 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 be closed when the electronic drain valve 3 is opened for a first preset period of time; when the air pressure detection value is larger than or equal to the first set threshold value, the air compressor 5 is controlled to continue to work for a second preset time period and then stop; 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 braking system is applied to an electric automobile, and the braking system comprises a CAN bus system 9, an instrument 8 and an air compressor controller 10; the drainage control device 4 is configured as a vehicle control unit 4; wherein, the air pressure sensor 2 is arranged in 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 whole vehicle controller 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 controller 4 is in communication with the air compressor 5 through communication connection with the air compressor controller 10.
In particular, one embodiment is: the air pressure sensor 2 detects the air pressure of the air reservoir 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, and the instrument 8 decodes and reads 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 whole vehicle controller 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 is that the air pressure detection value of the air brake pipeline is larger than or equal to the unloading air pressure value, the whole vehicle controller 4 sends a command to the air compressor controller 10 to control the air compressor 5 to continue working for a second preset time period and then stops;
when the comparison result is that the air pressure detection value of the air brake pipeline is smaller than the starting air pressure value, the whole vehicle controller 4 sends a command to the air compressor controller 10 to control the air compressor 5 to restart.
In particular, another embodiment is: the whole vehicle controller 4 controls the stop of the air compressor 5 through the air pressure switch 11 arranged 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 is fed back to the whole vehicle controller 4, and the whole vehicle controller 4 controls the air compressor 5 to stop through the air compressor controller 10;
in this embodiment, the vehicle controller 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 one possible implementation manner, the brake system can be additionally provided with a rocker switch, the rocker switch is integrated to 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 be used for manually draining water when the vehicle is stopped, and the problems that the pressure value of the pneumatic brake pipeline pressure does not reach the unloading pressure value and the electronic drain valve 3 cannot be automatically opened when the vehicle is stopped and put in storage are avoided.
As a fourth aspect of the present application, the present application provides a vehicle including the above-described brake system.
The specific structure and effects of the braking system used in the vehicle provided by the present application refer to the third aspect of the present application.
Alternatively, the vehicle is a construction vehicle or a general vehicle.
Optionally, the vehicle is an electric car.
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, which may include various forms of computer-readable storage media, such as volatile memory and/or non-volatile memory. Volatile memory can 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 a computer readable storage medium and the processor 601 may execute the program information to implement the drainage control methods or other desired functions of the various embodiments of the present application 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 forms of connection mechanisms (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, for simplicity, only some of the components of the electronic device 600 that are relevant to the present application are shown in fig. 9, 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 drainage control method according to various embodiments of the application described in this specification.
The computer program product may be written 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 water discharge 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. 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 words "or" and "as used herein mean and are used interchangeably with the word" 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. These decompositions and/or recombination should be considered as equivalents of the present application.
The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the application. Thus, the present application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features herein.
The foregoing description of the preferred embodiments of the application is not intended to limit the application to the precise form disclosed, and any modifications, equivalents, and alternatives falling within the spirit and principles of the application are intended to be included within the scope of the application.
Claims (7)
1. The drainage control method of the braking system is characterized in that the braking system comprises a pneumatic braking pipeline, and the pneumatic braking pipeline comprises an air reservoir and an electronic drainage valve arranged on the air reservoir; the drainage control method includes:
acquiring an air pressure detection value of the air brake pipeline; and
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 storage cylinder;
when the electronic drain valve is opened for a first preset time period, generating a second control signal; the second control signal is used for controlling the electronic drain valve to be closed;
the air brake pipeline also comprises an air compressor which works intermittently; the drainage control method further includes:
generating a third control signal when the air pressure detection value is greater than or equal to the first set threshold value; the third control signal is used for controlling the air compressor to stop after continuously working for a second preset time period, and the first preset time period is equal to the second preset time period; and
generating a fourth control signal when the air pressure detection value is smaller than a second set threshold value; the fourth control signal is used for controlling the air compressor to start, and the second set threshold value is smaller than or equal to the first set threshold value;
the air brake pipeline comprises a dryer and an unloading valve arranged on the dryer; the unloading air pressure value of the dryer is equal to the first set threshold value;
the drainage control method further includes:
generating a fifth control signal when the air pressure detection value is greater than or equal to the first set threshold value; wherein the fifth control signal is used for controlling the unloading valve to be opened so as to unload the dryer.
2. The drain control method according to claim 1, wherein the unloading valve is configured as a mechanical automatic unloading valve or an electrically controlled unloading valve.
3. The water discharge control method according to claim 2, wherein the air pressure detection value of the air brake line is configured to be obtained by detecting the air pressure in the air cylinder; the second set threshold is smaller than the first set threshold; the second set threshold is configured to be a lowest air pressure value at which the air brake line is normally used.
4. A drainage control device of a brake system, characterized in that the drainage control device is used for applying the brake system according to claim 1, the brake system comprises a pneumatic brake pipeline, the pneumatic brake pipeline comprises an air reservoir, an electronic drainage valve arranged on the air reservoir, an intermittently operated air compressor, a dryer and an unloading valve arranged on the dryer; the unloading air pressure value of the dryer is equal to the first set threshold value; 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, generating a second control signal when the electronic drain valve is opened for a first preset duration, generating a third control signal when the air pressure detection value is greater than or equal to the first set threshold value, and generating a fourth control signal when the air pressure detection value is less than the second 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 storage cylinder; the second control signal is used for controlling the electronic drain valve to be closed; the third control signal is used for controlling the air compressor to stop after continuously working for a second preset time period, and the second preset time period is determined according to the first preset time period; the fourth control signal is used for controlling the air compressor to start, and the second set threshold value is smaller than or equal to the first set threshold value; for generating a fifth control signal when the air pressure detection value is greater than or equal to the first set threshold value; wherein the fifth control signal is used for controlling the unloading valve to be opened so as to unload the dryer.
5. A brake system, characterized by a drain control method for applying the brake system according to claim 1, wherein the brake system comprises:
the air brake pipeline comprises an air reservoir, an electronic drain valve arranged on the air reservoir, an intermittently-operated air compressor, a dryer and an unloading valve arranged on the dryer; the unloading air pressure value of the dryer is equal to the first set threshold value;
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;
a drainage control device;
the drainage control device is in communication connection with the air compressor, the electronic drainage valve and the air pressure sensor.
6. The brake system of claim 5, applied to an electric vehicle, the brake system comprising a CAN bus system and an instrument; the drainage control device is configured as a whole vehicle controller;
wherein the air pressure sensor is arranged on the air cylinder; the instrument is respectively in communication connection with the air pressure sensor and the CAN bus system, and the whole vehicle controller is respectively in communication connection with the CAN bus system, the electronic drain valve and the air compressor.
7. A vehicle comprising a brake system according to claim 5 or 6.
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 CN113859205A (en) | 2021-12-31 |
| CN113859205B true 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114738252A (en) * | 2022-02-24 | 2022-07-12 | 中国第一汽车股份有限公司 | Control method, system and equipment for electric air compressor and storage medium |
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| CN208036260U (en) * | 2018-02-23 | 2018-11-02 | 瑞立集团瑞安汽车零部件有限公司 | Vehicle automatic drainage system, motor vehicle braking system and vehicle |
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| CN112141070A (en) * | 2020-09-16 | 2020-12-29 | 合肥锐智科技有限责任公司 | Automatic drainage loop detection system of gas receiver |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9834192B2 (en) * | 2013-03-05 | 2017-12-05 | Haldex Brake Products Corporation | Automatic air tank purge system |
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| CN103241235A (en) * | 2013-05-28 | 2013-08-14 | 湖南南车时代电动汽车股份有限公司 | Air channel control method and system for air compressor and brake switch of electric vehicle |
| CN208036260U (en) * | 2018-02-23 | 2018-11-02 | 瑞立集团瑞安汽车零部件有限公司 | Vehicle automatic drainage system, motor vehicle braking system and vehicle |
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