CN110341671B - Air pressure control method and device for vehicle air reservoir and vehicle air reservoir system - Google Patents
Air pressure control method and device for vehicle air reservoir and vehicle air reservoir system Download PDFInfo
- Publication number
- CN110341671B CN110341671B CN201910649903.5A CN201910649903A CN110341671B CN 110341671 B CN110341671 B CN 110341671B CN 201910649903 A CN201910649903 A CN 201910649903A CN 110341671 B CN110341671 B CN 110341671B
- Authority
- CN
- China
- Prior art keywords
- air
- chamber
- supply chamber
- air supply
- threshold value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
- B60T13/26—Compressed-air systems
-
- 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
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
- B60T13/26—Compressed-air systems
- B60T13/40—Compressed-air systems indirect, i.e. compressed air booster units indirect systems
- B60T13/44—Compressed-air systems indirect, i.e. compressed air booster units indirect systems with two-chamber booster units
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Air-Conditioning For Vehicles (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The embodiment of the application provides an air pressure control method and device of a vehicle air reservoir and a vehicle air reservoir system. Whether the non-air supply chamber is inflated is determined according to the air pressure of the non-air supply chamber, so that the inflation of the air pump to the non-air supply chamber is not influenced by the air pressure of the air supply chamber during braking at each time, the air pump is prevented from being inflated in a high-pressure state all the time, the power consumption of the air pump is reduced, and the service life of the air pump is prolonged.
Description
Technical Field
The embodiment of the application relates to the technical field of air pump control, in particular to an air pressure control method and device of a vehicle air reservoir and a vehicle air reservoir system.
Background
The air brake system is one of vehicle brake systems, and has the main advantage that a large braking force can be obtained during braking.
Generally, the pneumatic brake system includes an air pump, an air reservoir, and a pneumatic sensor disposed on the air reservoir. The chamber of the air cylinder is used as an air brake source, and air is supplied to the air brake when the vehicle is braked. The air pump inflates the chamber of the air storage cylinder to ensure that the chamber always has compressed air with certain pressure. Whether the air pump is started or not mainly depends on whether the pressure of the air reservoir collected by the air pressure sensor on the air reservoir is smaller than a preset pressure or not, and if the pressure of the air reservoir is smaller than the preset pressure, the air pump is started to inflate the cavity of the air reservoir.
The closer the pressure of the air cylinder is to the preset pressure, the slower the air cylinder is inflated. Under the condition of frequent braking, the pressure of the air storage cylinder can not reach the preset pressure all the time, so that the air pump is inflated all the time in a high-pressure state, the power consumption is increased, and the service life of the air pump is shortened.
Disclosure of Invention
The embodiment of the application provides an air pressure control method and device of a vehicle air reservoir and a vehicle air reservoir system, and aims to solve the problems that an air pump always pumps air in a high-pressure state under the condition of frequent braking, the power consumption is increased, and the service life of the air pump is shortened.
In a first aspect, an embodiment of the present application provides a method for controlling air pressure of an air reservoir of a vehicle, including:
acquiring working modes of the air storage cylinder, wherein the working modes comprise a cold region mode and a non-cold region mode;
determining a gas supply chamber and a non-gas supply chamber in the two chambers of the gas cylinder according to the working mode;
and determining whether to inflate the non-gas supply chamber according to the gas pressure of the non-gas supply chamber.
Optionally, the working mode is a non-cold region mode, determining an air supply chamber and a non-air supply chamber in the two chambers of the air cylinder according to the working mode, includes:
controlling a communication valve between the two chambers to open;
judging whether the air pressures of the two chambers are smaller than a first threshold value;
if the air pressures of the two chambers are smaller than the first threshold value, inflating the two chambers until the air pressures of the two chambers exceed a second threshold value, controlling the communication valve to be closed, determining one chamber of the two chambers as the air supply chamber, and determining the other chamber as the non-air supply chamber; wherein the second threshold is greater than the first threshold.
Optionally, the working mode is a non-cold region mode, and determining whether to inflate the non-air supply chamber according to the air pressure of the non-air supply chamber includes:
inflating the non-gas supply chamber;
judging whether the air pressure of the non-air supply chamber is greater than or equal to a third threshold value; the third threshold is used for controlling a safety valve for opening a chamber of the air storage cylinder;
if the air pressure of the non-air supply chamber is smaller than the third threshold value, continuing to inflate the non-air supply chamber until the air pressure of the non-air supply chamber exceeds the third threshold value;
and if the air pressure of the non-air supply chamber is greater than or equal to the third threshold value, stopping inflating the non-air supply chamber.
Optionally, the method further includes:
judging whether the air pressure of the air supply chamber is smaller than a second threshold value or not; the second threshold is less than the third threshold;
if the air pressure of the air supply chamber is smaller than the second threshold value, taking the two chambers of the air storage cylinder as an air supply chamber and a non-air supply chamber alternately, inflating the non-air supply chamber until the air pressure of the non-air supply chamber exceeds the third threshold value, and returning to execute the step of judging whether the air pressure of the air supply chamber is smaller than the second threshold value;
and if the air pressure of the air supply chamber is greater than or equal to the second threshold value, returning to execute the step of determining the air supply chamber and the non-air supply chamber in the two chambers of the air storage cylinder according to the working mode.
Optionally, the working mode is a cold region mode, determining an air supply chamber and a non-air supply chamber in the two chambers of the air cylinder according to the working mode, including:
judging whether the air pressures of a first chamber and a second chamber in the two chambers are both smaller than a second threshold value; wherein a communication valve between the two chambers is closed;
if the air pressure of the first chamber and the air pressure of the second chamber are both smaller than the second threshold value, inflating the first chamber or the second chamber until the air pressure of the first chamber or the second chamber exceeds a third threshold value; the third threshold is used for controlling a safety valve for opening a chamber of the air reservoir, and the third threshold is larger than the second threshold;
if the air pressure of the first chamber and/or the air pressure of the second chamber are/is greater than or equal to the second threshold value, determining the chamber with the highest air pressure in the first chamber and the second chamber as the air supply chamber, and determining the chamber with the lowest air pressure as the non-air supply chamber.
Optionally, the working mode is a cold region mode, and determining whether to inflate the non-air supply chamber according to the air pressure of the non-air supply chamber includes:
judging whether the air pressure of the non-air supply chamber is smaller than a second threshold value;
if the air pressure of the non-air supply chamber is smaller than the second threshold value, inflating the non-air supply chamber until the air pressure of the non-air supply chamber exceeds a third threshold value; the third threshold is used for controlling a safety valve for opening a chamber of the air reservoir, and the third threshold is larger than the second threshold.
Optionally, the method further includes:
judging whether the air pressure of the air supply chamber is smaller than the second threshold value;
if the air pressure of the air supply chamber is smaller than the second threshold value, taking the two chambers of the air storage cylinder as an air supply chamber and a non-air supply chamber alternately, inflating the non-air supply chamber until the air pressure of the non-air supply chamber exceeds the third threshold value, and returning to execute the step of determining the air supply chamber and the non-air supply chamber in the two chambers of the air storage cylinder according to the working mode;
and if the air pressure of the air supply chamber is greater than or equal to the second threshold value, returning to execute the step of determining the air supply chamber and the non-air supply chamber in the two chambers of the air storage cylinder according to the working mode.
Optionally, the obtaining the working mode of the air reservoir includes:
acquiring an ambient temperature;
and if the environment temperature is greater than a preset temperature value and lasts for a preset time period, determining that the working mode is the non-cold area mode.
In a second aspect, an embodiment of the present application provides an air pressure control device for an air reservoir of a vehicle, including:
the acquisition module is used for acquiring the working modes of the air storage cylinder, wherein the working modes comprise a cold region mode and a non-cold region mode;
the determining module is used for determining an air supply chamber and a non-air supply chamber in the two chambers of the air storage cylinder according to the working mode;
and the control module is used for determining whether the non-air supply chamber is inflated according to the air pressure of the non-air supply chamber.
In a third aspect, an embodiment of the present application provides an electronic device, including: a processor and a memory, the memory being configured to store computer instructions, the processor being configured to execute the computer instructions stored in the memory to cause the electronic device to perform the method of controlling air pressure in an air reservoir of a vehicle as provided in any of the embodiments of the first aspect of the present application.
In a fourth aspect, an embodiment of the present application provides a storage medium, including: a readable storage medium and a computer program for implementing the method for controlling air pressure of a vehicle air reservoir according to any one of the embodiments of the first aspect of the present application.
In a fifth aspect, an embodiment of the present application provides a vehicle air reservoir system, including: a controller, an air pump and an air reservoir; the controller is respectively connected with the air pump and the air storage cylinder, and the air pump is connected with the air storage cylinder;
the air storage cylinder comprises two chambers, a communication valve is arranged on a passage between the two chambers, a control valve is arranged at an inlet and an outlet of each chamber, and a safety valve is also arranged on each chamber;
the air pump is used for inflating the chamber;
the controller is used for executing the method for controlling the air pressure of the vehicle air storage cylinder provided by any embodiment of the first aspect of the application.
The embodiment of the application provides an air pressure control method and device of a vehicle air cylinder and a vehicle air cylinder system. Whether the non-air supply chamber is inflated is determined according to the air pressure of the non-air supply chamber, so that the inflation of the air pump to the non-air supply chamber is not influenced by the air pressure of the air supply chamber during braking at every time, the air pump is prevented from being inflated in a high-pressure state all the time, the power consumption of the air pump is reduced, and the service life of the air pump is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of a vehicle air reservoir to which an embodiment of the present application is applicable;
FIG. 2 is a flow chart of a method for controlling air pressure in an air reservoir of a vehicle according to an embodiment of the present disclosure;
FIG. 3 is a flowchart of a method for controlling air pressure in an air reservoir of a vehicle according to a second embodiment of the present invention;
fig. 4 is a flowchart of a method for controlling air pressure of an air reservoir of a vehicle according to a third embodiment of the present application;
FIG. 5 is a flowchart illustrating a method for controlling air pressure in an air reservoir of a vehicle according to a fourth embodiment of the present invention;
fig. 6 is a flowchart of a method for controlling air pressure of an air reservoir of a vehicle according to a fifth embodiment of the present disclosure;
FIG. 7 is a schematic structural diagram of an air pressure control device for an air reservoir of a vehicle according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The embodiment of the application provides an air pressure control method of a vehicle air storage cylinder, which can be applied to the vehicle air storage cylinder with at least two chambers. Fig. 1 is a schematic structural diagram of a vehicle air cylinder to which the embodiment of the present application is applied. As shown in fig. 1, the vehicle air reservoir may include a chamber 11 and a chamber 12. The chamber 11 and the chamber 12 are connected by a communication valve 13. When the communication valve 13 is opened, the chamber 11 communicates with the chamber 12, and the air pressures in both chambers are the same. When the communication valve 13 is closed, the chamber 11 is isolated from the chamber 12. The inlets of the chamber 11 and the chamber 12 are provided with a communication valve 14 and a communication valve 15, respectively, for connection with an intake pipe 20. The air inlet conduit 20 may be connected to an air pump for inflating the vehicle air reservoir. The outlets of the chambers 11 and 12 are provided with a communication valve 16 and a communication valve 17, respectively, for connection with an outlet duct 21. The air brake can be supplied with air through the air outlet pipe 21. The chamber 11 and the chamber 12 are also provided with a safety valve 18 and a safety valve 19, respectively. When the air pressure of the chamber 11 or 12 is greater than or equal to the relief valve opening air pressure, the relief valve 18 or 19 opens to discharge the moisture in the corresponding chamber. Through dividing the cavity of gas receiver into two, all use the intercommunication valve to be connected between the cavity and between cavity and intake pipe, the outlet duct, can be so that when inflating to a cavity of gas receiver, another cavity is the air feed of stopping for the gas, and the no air pressure drop problem leads to the air pump to inflate under high pressure state always when guaranteeing to inflate at every turn, and the problem that the air pump power consumption is high is shortened in the air pump life-span.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 2 is a flowchart of a method for controlling air pressure of an air reservoir of a vehicle according to an embodiment of the present disclosure. The main execution body of the method is an air pressure Control device of a Vehicle air storage cylinder, and when the method is specifically implemented, the air pressure Control device can be integrated in a Vehicle Control Unit (VCU). As shown in fig. 2, the method for controlling air pressure of an air reservoir of a vehicle according to the present embodiment may include:
s201, obtaining the working mode of the air storage cylinder.
The working modes comprise a cold region mode and a non-cold region mode.
Specifically, the air pump in the air brake system inflates the air reservoir with compressed air at a certain pressure, and during this period, impurities such as water vapor in the compressed air are filtered out by the dryer in the air brake system. However, the dryer does not completely filter out moisture in the compressed air, resulting in water accumulation in the air reservoir. In cold regions, if the water vapor in the air storage cylinder is not discharged in time, the air storage cylinder, the safety valve and the pipeline system are frozen, so that the air storage cylinder is easily frozen and the pipeline system is easily broken. Therefore, the air storage cylinder is provided with two working modes, wherein one working mode is a cold region mode, and the air storage cylinder needs to be inflated until a safety valve is opened to discharge water vapor in the air storage cylinder when being inflated every time. The other working mode is a non-cold region mode, and the safety valve is allowed to be not opened for a plurality of times when the air storage cylinder is inflated.
The implementation manner of obtaining the working mode of the air reservoir is not limited in this embodiment.
As a possible implementation manner, the ambient temperature may be obtained, and the operation mode may be determined according to whether the ambient temperature is less than the preset temperature. And if the environmental temperature is lower than the preset temperature, determining that the working mode is a cold region mode, otherwise, determining that the working mode is a non-cold region mode.
As another possible implementation, the ambient temperature may be acquired. The operation mode is determined according to whether the ambient temperature is greater than a preset temperature for a preset time period. And if the environment temperature is higher than the preset temperature and lasts for a preset time period, determining that the working mode is a non-cold area mode, otherwise, determining that the working mode is a cold area mode. In this embodiment, the preset temperature and the preset time period are not limited, for example, the preset time period may be 10 days.
S202, determining a gas supply chamber and a non-gas supply chamber in two chambers of the gas storage cylinder according to the working mode.
Specifically, the air receiver has two cavities, and two cavities can communicate, regard as the air braking air supply simultaneously, for the air braking air feed. The two chambers can also be isolated, one is used as an air brake air source to supply air for air brake, and the other is used as a standby air brake air source to supply air for air brake temporarily but is inflated by an air pump. The air receiver has cold district mode and non-cold district mode, can confirm to select a cavity for the air supply of stopping of air according to the mode of air receiver current work, still selects two cavities for the air supply of stopping of air to and under the condition of selecting a cavity for the air supply of stopping of air, specifically select which cavity is the air supply of stopping of air, which cavity is inflated by the air pump, as reserve air supply of stopping of air.
S203, determining whether to inflate the non-air supply chamber according to the air pressure of the non-air supply chamber.
Specifically, after the air supply chamber and the non-air supply chamber are determined, the communication valve between the air supply chamber and the air outlet pipe is controlled to be opened to supply air for the air brake. Meanwhile, whether the non-air supply chamber is inflated is determined according to the current air pressure of the non-air supply chamber.
According to the air pressure control method of the vehicle air reservoir, the working mode of the air reservoir is divided into a cold region mode and a non-cold region mode, an air supply chamber and a non-air supply chamber are determined in two chambers of the air reservoir according to different working modes, the air supply chamber serves as an air brake air source and supplies air for air brake, the non-air supply chamber serves as a standby air brake air source, and air is pumped by the air pump. Whether the non-air supply chamber is inflated is determined according to the air pressure of the non-air supply chamber, so that the inflation of the air pump to the non-air supply chamber is not influenced by the air pressure of the air supply chamber during braking at every time, the air pump is prevented from being inflated in a high-pressure state all the time, the power consumption of the air pump is reduced, and the service life of the air pump is prolonged.
Based on the embodiment shown in fig. 2, please refer to fig. 3, optionally, an implementation manner of S202 is provided. As shown in fig. 3, in the case where the operation mode is the non-cold region mode, determining the gas supply chamber and the non-gas supply chamber among the two chambers of the gas cylinder according to the operation mode may include:
and S301, controlling a communication valve between the two chambers to be opened.
S302, whether the air pressure of the two chambers is smaller than a first threshold value is judged.
The air pressure in the two chambers is the same as the communication valve between the two chambers is open. If the air pressures of the two chambers are less than the first threshold, S303 is performed. If the air pressures of the two chambers are not less than the first threshold, S304 is performed.
S303, inflating the two chambers until the air pressure of the two chambers exceeds a second threshold value, controlling the communication valve to be closed, determining one chamber of the two chambers as an air supply chamber, and determining the other chamber as a non-air supply chamber; wherein the second threshold is greater than the first threshold.
And S304, using the two chambers as air supply chambers, and not inflating the two chambers.
Specifically, the air pressure control device of the vehicle air reservoir allows the air reservoir to be inflated to a state where the safety valve is not opened, in a case where the operating mode of the air reservoir is a non-cold region mode. Therefore, under the condition that the obtained working mode is the non-cold region mode, the air pressure control device controls the communication valve between the two chambers to be opened, so that the two chambers are jointly used as air brake air sources to supply air for air brakes, and whether the air pressure of the two chambers is smaller than a first threshold value or not is judged. If the air pressure of the two chambers is smaller than the first threshold value, the two chambers are inflated until the air pressure exceeds the second threshold value, and the communicating valve is controlled to be closed, so that the two chambers are isolated. Then, the air pressure control device selects one of the two chambers as an air brake source, and the other chamber as a standby air brake source, and the air pump inflates the air. If the air pressures of the two chambers are not smaller than the first threshold value, the two chambers are continuously used as air brake sources, the pneumatic brake system is allowed to work under a proper under-pressure state, and the two chambers are not inflated.
In this embodiment, specific ranges of the first threshold and the second threshold are not limited. Alternatively, the first threshold may be a minimum air pressure of the air reservoir. Optionally, the second threshold may be the following air pressure value: the minimum limit time for the air supply chamber to be lowered from the second threshold value to the first threshold value under the condition that the vehicle normally runs is met, and the minimum limit time can meet the condition that the non-air supply chamber is inflated from the second threshold value until the safety valve is opened.
In this embodiment, under the condition that the operating mode that acquires the air receiver is the non-cold district mode, open through the intercommunication valve between two cavities of control air receiver, regard as the air supply of stopping jointly, for the air supply of stopping, guarantee normal driving. And, when the atmospheric pressure of two cavities of the air receiver is too low, inflate two cavities to certain atmospheric pressure for single cavity is enough for the short-term air feed for air brake, and then regard a cavity as air feed cavity, for air brake air feed, regard another air supply as non-air feed cavity, inflate by the air pump. Whether the non-air supply chamber is inflated is determined according to the air pressure of the non-air supply chamber, so that the inflation of the air pump to the non-air supply chamber is not influenced by the air pressure of the air supply chamber during braking at every time, the air pump is prevented from being inflated in a high-pressure state all the time, the power consumption of the air pump is reduced, and the service life of the air pump is prolonged.
On the basis of the embodiment shown in fig. 2, please refer to fig. 4, which optionally provides an implementation manner of S203. As shown in fig. 4, in the case that the operation mode is the non-cold region mode, determining whether to inflate the non-gas supply chamber according to the gas pressure of the non-gas supply chamber may include:
s401, inflating the non-air supply chamber.
S402, judging whether the air pressure of the non-air supply chamber is larger than or equal to a third threshold value; the third threshold value is used to control a safety valve that opens a chamber of the air reservoir.
If the air pressure of the non-supply air chamber is less than the third threshold, S403 is performed. If the air pressure of the non-air supply chamber is greater than or equal to the third threshold, S404 is performed.
And S403, continuing inflating the non-air supply chamber until the air pressure of the non-air supply chamber exceeds a third threshold value.
S404, stopping inflating the non-air supply chamber.
Specifically, after the working mode is the non-cold region mode and the non-gas supply chamber of the gas storage cylinder is determined according to the non-cold region mode, the non-gas supply chamber is inflated until the gas pressure of the non-gas supply chamber is greater than or equal to a third threshold value and a safety valve of the non-gas supply chamber is opened.
In this embodiment, the safety valve is opened through inflating to the non-air feed cavity, can make the steam in the gas receiver in time discharge.
Optionally, the method for controlling air pressure of an air reservoir of a vehicle according to this embodiment may further include:
s405, judging whether the air pressure of the air supply chamber is smaller than a second threshold value; the second threshold is less than the third threshold.
If the air pressure of the air supply chamber is less than the second threshold value, S406 is performed. If the air pressure of the air supply chamber is greater than or equal to the second threshold value, S407 is performed.
And S406, taking the two chambers of the air storage cylinder as an air supply chamber and a non-air supply chamber alternately, inflating the non-air supply chamber until the air pressure of the non-air supply chamber exceeds a third threshold value, and returning to execute S405.
And S407, determining a gas supply chamber and a non-gas supply chamber in the two chambers of the gas storage cylinder according to the working mode.
Wherein, the principle of S407 is similar to that of S202 in the embodiment shown in fig. 2, and is not described herein again.
S405 to S407 are explained below with reference to fig. 1. It is assumed that the communication valve 13 between the chambers 11 and 12 is closed. The chamber 11 is a non-supplied air chamber. The chamber 11 has been inflated to a third threshold and the safety valve 18 of the chamber 11 opens to vent the moisture in the chamber 11. The communication valve 14 at the inlet and the communication valve 16 at the outlet of the chamber 11 are both closed. The chamber 12 is a gas supply chamber. The communication valve 15 at the inlet of the chamber 12 is closed and the communication valve 17 at the outlet is opened for supplying air to the air brake.
First, it is determined whether the air pressure of the chamber 12 as the air supply chamber is less than a second threshold value.
If the air pressure of the chamber 12 is less than the second threshold, the supplied air chamber and the non-supplied air chamber are swapped. That is, the communication valve 16 at the outlet of the chamber 11 is opened, and the air brake is supplied with the chamber 11 as an air supply chamber. The communication valve 17 at the outlet of the chamber 12 is closed, the communication valve 15 at the inlet of the chamber 12 is opened, the chamber 12 is taken as a non-air supply chamber, the air is pumped by an air pump until the third threshold value is exceeded, and the safety valve 19 of the chamber 12 opens to discharge the moisture in the chamber 12. Then, it is continuously judged whether the air pressure of the chamber 11 as the air supply chamber is smaller than the second threshold value.
If the air pressure of the chamber 12 is greater than or equal to the second threshold, the process returns to step S202, in which the air supply chamber and the non-air supply chamber are determined in the two chambers of the air cylinder according to the operation mode. Specifically, S301 to S304 provided in the embodiment shown in fig. 3 may be performed.
In this embodiment, the specific range of the third threshold is not limited. For example, the third threshold may be a pressure value at which the relief valve opens.
The second threshold in this embodiment may refer to the description in the embodiment shown in fig. 3, and the principle is similar, which is not described herein again.
In the embodiment, the two chambers are alternately taken as the air supply chamber and the non-air supply chamber, and the air pump does not influence the inflating of the non-air supply chamber by the air pressure of the air supply chamber when braking at each time, so that the air pump is prevented from inflating under a high-pressure state all the time, the power consumption of the air pump is reduced, and the service life of the air pump is prolonged. Moreover, because the safety valve is opened after each inflation, the water vapor in the air storage cylinder can be discharged in time.
Based on the embodiment shown in fig. 2, please refer to fig. 5, optionally, an implementation manner of S202 is provided. As shown in fig. 5, in the case where the operation mode is the cold region mode, determining the gas supply chamber and the non-gas supply chamber among the two chambers of the gas cylinder according to the operation mode may include:
s501, judging whether the air pressures of a first chamber and a second chamber in the two chambers are both smaller than a second threshold value; wherein the communication valve between the two chambers is closed.
For convenience of description, any one of the two chambers of the air reservoir may be referred to as a first chamber, and the remaining other chamber may be referred to as a second chamber. If the air pressure of the first chamber and the air pressure of the second chamber are both smaller than the second threshold, S502 is performed. If the air pressure of the first chamber is greater than or equal to the second threshold, or the air pressure of the second chamber is greater than or equal to the second threshold, or the air pressures of the first chamber and the second chamber are both greater than or equal to the second threshold, S503 is executed.
S502, inflating the first chamber or the second chamber until the air pressure of the first chamber or the second chamber exceeds a third threshold value; the third threshold is used for controlling a safety valve for opening a chamber of the air reservoir, and the third threshold is greater than the second threshold.
S503, determining the chamber with the maximum air pressure in the first chamber and the second chamber as an air supply chamber, and determining the chamber with the minimum air pressure as a non-air supply chamber.
Specifically, in cold regions, if water vapor exists in the air cylinder, the safety valve and the pipeline system are easy to freeze, so that the air cylinder is frozen, and the problem of failure of the pipeline system is solved. In order to avoid water vapor existing in the air storage cylinder, under the condition that the working mode of the air storage cylinder is the cold region mode, the air pressure control device of the vehicle air storage cylinder firstly controls the communicating valve between the two cavities to be closed, and judges whether the air pressure of the two cavities is smaller than a preset air pressure value or not. If the air pressure of at least one of the two chambers is not less than the preset air pressure value, the chamber with the highest air pressure in the two chambers is used as an air brake air source for supplying air for air brake, the other chamber is used as a standby air brake air source, and the air pump is used for inflating to enable the vehicle to normally run. If the air pressures of the two chambers are both smaller than the preset air pressure value, because the single chamber is used as an air brake source under the condition that the vehicle normally runs, when the air pressure of the chamber is reduced to the lowest limit value of the air pressure, the other chamber is not inflated until the safety valve is opened, and water vapor exists in the other chamber. Therefore, when the air pressure of the two chambers is judged to be smaller than the preset air pressure value, the vehicle is forbidden to drive, one of the two chambers is inflated until the safety valve is opened, the chamber inflated until the safety valve is opened is used as an air brake air source for supplying air for air brake, the other chamber is used as a standby air brake air source, the air pump inflates, and the vehicle can normally drive.
In this embodiment, specific ranges of the second threshold and the third threshold are not limited, and optionally, the second threshold may be the following air pressure value: the minimum limit time for the air supply chamber to be lowered from the second threshold value to the first threshold value under the condition that the vehicle normally runs is met, and the minimum limit time can meet the condition that the non-air supply chamber is inflated from the second threshold value until the safety valve is opened. Alternatively, the third threshold may be a value of air pressure at which the relief valve opens.
In this embodiment, when it is first determined that the air pressures of the two chambers of the air reservoir are both smaller than the preset air pressure value, it is prevented that the single chamber is used as the air brake source, and when the air pressure of the chamber is decreased to the minimum air pressure value, the other chamber is not inflated until the safety valve is opened, so that water vapor exists in the other chamber. When one of the air pressures of the two chambers is not less than the preset air pressure value, the chamber with the largest air pressure is used as an air brake source, the chamber with the smallest air pressure is used as a standby air brake source for inflating, and when the air pressure of the chamber with the largest air pressure is reduced to the lowest limit value of the air pressure, the chamber with the smallest air pressure can be inflated until the safety valve is opened. When the brake is performed each time, the air pump inflates the non-air supply chamber without being influenced by the air pressure of the air supply chamber, so that the air pump is prevented from inflating under a high-pressure state all the time, the power consumption of the air pump is reduced, and the service life of the air pump is prolonged. Moreover, because the safety valve is opened after the air is pumped at every time, the water vapor in the air storage cylinder is timely discharged, and therefore the problems that the air storage cylinder is frozen out, the safety valve fails and the like when the cold temperature is caused by water accumulation of the air storage cylinder can be avoided.
On the basis of the embodiment shown in fig. 2, please refer to fig. 6, optionally, an implementation manner of S203 is provided. As shown in fig. 6, in the case that the operation mode is the cold region mode, determining whether to inflate the non-gas supply chamber according to the gas pressure of the non-gas supply chamber may include:
s601, judging whether the air pressure of the non-air supply chamber is smaller than a second threshold value.
If the air pressure of the non-supply air chamber is less than the second threshold, 602 is performed. If the air pressure of the non-air supply chamber is greater than or equal to the second threshold, S603 is performed.
And S602, inflating the non-air supply chamber until the air pressure of the non-air supply chamber exceeds a third threshold value.
Wherein the third threshold is used for controlling a safety valve for opening a chamber of the air reservoir, and the third threshold is greater than the second threshold.
S603, judging whether the air pressure of the air supply chamber is smaller than a second threshold value.
If the air pressure of the air supply chamber is less than the second threshold, S604 is performed. If the air pressure of the air supply chamber is greater than or equal to the second threshold, S605 is performed.
S604, alternately taking the two chambers of the air storage cylinder as an air supply chamber and a non-air supply chamber, and inflating the non-air supply chamber until the air pressure of the non-air supply chamber exceeds a third threshold value. Then, S605 is executed.
And S605, determining an air supply chamber and a non-air supply chamber in the two chambers of the air storage cylinder according to the working mode.
Wherein, the principle of S605 is similar to that of S202 in the embodiment shown in fig. 2, and is not described herein again.
S601 to S605 will be described with reference to fig. 1. It is assumed that the communication valve 13 between the chambers 11 and 12 is closed. The chamber 11 is a gas supply chamber. The communication valve 14 at the inlet of the chamber 11 is closed and the communication valve 16 at the outlet is opened for supplying air to the air brake. The chamber 12 is a non-supplied air chamber. The communication valve 15 at the inlet and the communication valve 17 at the outlet of the chamber 12 are both closed.
First, it is determined whether the air pressure of the chamber 12, which is a non-air supply chamber, is less than a second threshold value.
If the air pressure in the chamber 12 is less than the second threshold, the air pump pumps air to exceed the third threshold, and the safety valve 19 of the chamber 12 opens to discharge the water vapor in the chamber 12. Then, it is determined whether the air pressure of the chamber 11 as the air supply chamber is less than a second threshold value. If the air pressure of the chamber 12 is smaller than the second threshold, it is directly determined whether the air pressure of the chamber 11 as the air supply chamber is smaller than the second threshold.
In the process of determining whether the air pressure of the chamber 11 as the air supply chamber is smaller than the second threshold, if the air pressure of the chamber 11 is smaller than the second threshold, the air supply chamber and the non-air supply chamber are exchanged. That is, the communication valve 17 at the outlet of the chamber 12 is opened, and the air brake is supplied with the chamber 12 as an air supply chamber. Closing the communication valve 16 at the outlet of the chamber 11, opening the communication valve 14 at the inlet of the chamber 11, using the chamber 11 as a non-gas supply chamber, pumping gas by the air pump until the gas exceeds a third threshold value, opening the safety valve 18 of the chamber 11, and discharging the water vapor in the chamber 11. Then, the process returns to S202, where the gas supply chamber and the non-gas supply chamber are determined in the two chambers of the gas cylinder according to the operation mode. Specifically, S501 to S503 provided in the embodiment shown in fig. 5 may be performed. If the air pressure of the chamber 11 is greater than the second threshold value, the process directly returns to step S202, in which the air supply chamber and the non-air supply chamber are determined in the two chambers of the air cylinder according to the operation mode.
In this embodiment, whether to inflate the non-air supply chamber is determined according to whether the air pressure of the non-air supply chamber is smaller than the second threshold value, so that another chamber can be inflated to the safety valve to be opened when the single chamber is used as the air supply chamber, and further, when the brake is performed at every time, the inflation of the air pump to the non-air supply chamber is not affected by the air pressure of the air supply chamber, the air pump is prevented from inflating under a high-pressure state all the time, the power consumption of the air pump is reduced, and the service life of the air pump is prolonged. Moreover, because the safety valve is opened after the air is pumped at every time, the water vapor in the air storage cylinder is timely discharged, and therefore the problems that the air storage cylinder is frozen out, the safety valve fails and the like when the cold temperature is caused by water accumulation of the air storage cylinder can be avoided.
Fig. 7 is a schematic structural diagram of an air pressure control device of a vehicle air reservoir according to an embodiment of the present application, which is configured to execute an air pressure control method of a vehicle air reservoir according to any method embodiment of the present application. As shown in fig. 7, the method for controlling air pressure of an air reservoir of a vehicle according to the present embodiment may include:
the acquisition module 71 is configured to acquire working modes of the air storage cylinder, where the working modes include a cold region mode and a non-cold region mode;
a determination module 72 for determining, according to the operating mode, a gas supply chamber and a non-gas supply chamber among the two chambers of the gas cylinder;
and a control module 73 for determining whether to inflate the non-air-supply chamber based on the air pressure of the non-air-supply chamber.
Optionally, the working mode is a non-cold region mode, and the determining module 72 is specifically configured to:
controlling a communication valve between the two chambers to open;
judging whether the air pressures of the two chambers are smaller than a first threshold value;
if the air pressures of the two chambers are smaller than a first threshold value, inflating the two chambers until the air pressures of the two chambers exceed a second threshold value, controlling the communication valve to be closed, determining one chamber of the two chambers as an air supply chamber, and determining the other chamber as a non-air supply chamber; wherein the second threshold is greater than the first threshold.
Optionally, the working mode is a non-cold region mode, and the control module 73 is specifically configured to:
inflating the non-air supply chamber;
judging whether the air pressure of the non-air supply chamber is greater than or equal to a third threshold value; the third threshold value is used for controlling a safety valve for opening a chamber of the air storage cylinder;
if the air pressure of the non-air supply chamber is smaller than a third threshold value, continuing inflating the non-air supply chamber until the air pressure of the non-air supply chamber exceeds the third threshold value;
and stopping inflating the non-air supply chamber if the air pressure of the non-air supply chamber is greater than or equal to a third threshold value.
Optionally, the control module 73 is further configured to:
judging whether the air pressure of the air supply chamber is smaller than a second threshold value; the second threshold is less than the third threshold;
if the air pressure of the air supply chamber is smaller than a second threshold value, taking the two chambers of the air storage cylinder as the air supply chamber and the non-air supply chamber alternately, inflating the non-air supply chamber until the air pressure of the non-air supply chamber exceeds a third threshold value, and returning to execute the step of judging whether the air pressure of the air supply chamber is smaller than the second threshold value;
and if the air pressure of the air supply chamber is greater than or equal to the second threshold value, returning to the step of determining the air supply chamber and the non-air supply chamber in the two chambers of the air storage cylinder according to the working mode.
Optionally, the working mode is a cold region mode, and the obtaining module 71 is specifically configured to:
judging whether the air pressures of a first chamber and a second chamber in the two chambers are both smaller than a second threshold value; wherein a communication valve between the two chambers is closed;
if the air pressure of the first chamber and the air pressure of the second chamber are both smaller than a second threshold value, inflating the first chamber or the second chamber until the air pressure of the first chamber or the second chamber exceeds a third threshold value, wherein the third threshold value is used for controlling opening of a safety valve of a chamber of the air storage cylinder, and the third threshold value is larger than the second threshold value;
and if the air pressure of the first chamber and/or the air pressure of the second chamber are/is larger than or equal to a second threshold value, determining the chamber with the highest air pressure in the first chamber and the second chamber as an air supply chamber, and determining the chamber with the lowest air pressure as a non-air supply chamber.
Optionally, the working mode is a cold region mode, and the control module 73 is specifically configured to:
judging whether the air pressure of the non-air supply chamber is smaller than a second threshold value;
if the air pressure of the non-air supply chamber is smaller than a second threshold value, inflating the non-air supply chamber until the air pressure of the non-air supply chamber exceeds a third threshold value; the third threshold is used for controlling a safety valve for opening a chamber of the air reservoir, and the third threshold is greater than the second threshold.
Optionally, the control module 73 is further configured to:
judging whether the air pressure of the air supply chamber is smaller than a second threshold value;
if the air pressure of the air supply chamber is smaller than a second threshold value, taking the two chambers of the air storage cylinder as the air supply chamber and the non-air supply chamber alternately, inflating the non-air supply chamber until the air pressure of the non-air supply chamber exceeds a third threshold value, and returning to execute the step of determining the air supply chamber and the non-air supply chamber in the two chambers of the air storage cylinder according to the working mode;
and if the air pressure of the air supply chamber is greater than or equal to the second threshold value, returning to the step of determining the air supply chamber and the non-air supply chamber in the two chambers of the air storage cylinder according to the working mode.
Optionally, the obtaining module 71 is specifically configured to:
acquiring an ambient temperature;
and if the environment temperature is greater than the preset temperature value and lasts for a preset time period, determining that the working mode is a non-cold area mode.
The air pressure control device of the vehicle air reservoir provided by the embodiment is used for executing the air pressure control device of the vehicle air reservoir provided by any method embodiment of the application, the technical principle and the technical effect are similar, and the details are not repeated here.
Fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present application. The electronic device provided by the embodiment is used for executing the air pressure control method of the vehicle air reservoir provided by any method embodiment of the application. As shown in fig. 8, the electronic device provided in this embodiment may include: at least one processor 81 and a memory 82.
During the operation of the electronic device, the memory 82 stores computer instructions, and the at least one processor 81 executes the computer instructions stored in the memory 82, so that the electronic device executes the method for controlling the air pressure of the air reservoir of the vehicle according to any method embodiment of the present application.
For a specific execution process of the electronic device, reference may be made to any method embodiment of the present application, which achieves similar principles and technical effects, and details are not described herein again.
The embodiment of the present application further provides a vehicle gas storage system, which may include: controller, air pump and air receiver.
Wherein, the controller can be connected with air pump and gas receiver respectively, and the air pump is connected with the gas receiver.
The air reservoir may comprise two chambers, a communication valve being provided in a passage between the two chambers, a control valve being provided at an inlet and an outlet of each chamber, and a safety valve being provided at each chamber.
An air pump may be used to pump air into the chamber.
The controller is used for executing the air pressure control method of the vehicle air storage cylinder provided by any method embodiment of the application.
The specific implementation and technical effects are similar, and are not described herein again.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the embodiments of the present application, and are not limited thereto; although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A method of controlling air pressure in an air reservoir of a vehicle, comprising:
acquiring working modes of the air storage cylinder, wherein the working modes comprise a cold region mode and a non-cold region mode;
determining a gas supply chamber and a non-gas supply chamber in the two chambers of the gas cylinder according to the working mode;
and determining whether to inflate the non-gas supply chamber according to the gas pressure of the non-gas supply chamber.
2. The method of claim 1, wherein the operating mode is a non-cold region mode, and wherein determining a gas supply chamber and a non-gas supply chamber among two chambers of the gas cylinder according to the operating mode comprises:
controlling a communication valve between the two chambers to open;
judging whether the air pressures of the two chambers are smaller than a first threshold value;
if the air pressures of the two chambers are smaller than the first threshold value, inflating the two chambers until the air pressures of the two chambers exceed a second threshold value, controlling the communication valve to be closed, determining one chamber of the two chambers as the air supply chamber, and determining the other chamber as the non-air supply chamber; wherein the second threshold is greater than the first threshold.
3. The method of claim 1, wherein the operating mode is a non-cold zone mode, and wherein determining whether to inflate the non-gas-supplying chamber based on the gas pressure of the non-gas-supplying chamber comprises:
inflating the non-gas supply chamber;
judging whether the air pressure of the non-air supply chamber is greater than or equal to a third threshold value; the third threshold is used for controlling a safety valve for opening a chamber of the air storage cylinder;
if the air pressure of the non-air supply chamber is smaller than the third threshold value, continuing to inflate the non-air supply chamber until the air pressure of the non-air supply chamber exceeds the third threshold value;
and if the air pressure of the non-air supply chamber is greater than or equal to the third threshold value, stopping inflating the non-air supply chamber.
4. The method of claim 3, further comprising:
judging whether the air pressure of the air supply chamber is smaller than a second threshold value or not; the second threshold is less than the third threshold;
if the air pressure of the air supply chamber is smaller than the second threshold value, taking the two chambers of the air storage cylinder as an air supply chamber and a non-air supply chamber alternately, inflating the non-air supply chamber until the air pressure of the non-air supply chamber exceeds the third threshold value, and returning to execute the step of judging whether the air pressure of the air supply chamber is smaller than the second threshold value;
and if the air pressure of the air supply chamber is greater than or equal to the second threshold value, returning to execute the step of determining the air supply chamber and the non-air supply chamber in the two chambers of the air storage cylinder according to the working mode.
5. The method of claim 1, wherein the operating mode is a cold zone mode, and wherein determining a gas supply chamber and a non-gas supply chamber in two chambers of the gas cylinder according to the operating mode comprises:
judging whether the air pressures of a first chamber and a second chamber in the two chambers are both smaller than a second threshold value; wherein a communication valve between the two chambers is closed;
if the air pressure of the first chamber and the air pressure of the second chamber are both smaller than the second threshold value, inflating the first chamber or the second chamber until the air pressure of the first chamber or the second chamber exceeds a third threshold value; the third threshold is used for controlling a safety valve for opening a chamber of the air reservoir, and the third threshold is larger than the second threshold;
if the air pressure of the first chamber and/or the air pressure of the second chamber are/is greater than or equal to the second threshold value, determining the chamber with the highest air pressure in the first chamber and the second chamber as the air supply chamber, and determining the chamber with the lowest air pressure as the non-air supply chamber.
6. The method of claim 1, wherein the operating mode is a cold zone mode, and wherein determining whether to inflate the non-gas-supplying chamber based on the gas pressure of the non-gas-supplying chamber comprises:
judging whether the air pressure of the non-air supply chamber is smaller than a second threshold value;
if the air pressure of the non-air supply chamber is smaller than the second threshold value, inflating the non-air supply chamber until the air pressure of the non-air supply chamber exceeds a third threshold value; the third threshold is used for controlling a safety valve for opening a chamber of the air reservoir, and the third threshold is larger than the second threshold.
7. The method of claim 6, further comprising:
judging whether the air pressure of the air supply chamber is smaller than the second threshold value;
if the air pressure of the air supply chamber is smaller than the second threshold value, taking the two chambers of the air storage cylinder as an air supply chamber and a non-air supply chamber alternately, inflating the non-air supply chamber until the air pressure of the non-air supply chamber exceeds the third threshold value, and returning to execute the step of determining the air supply chamber and the non-air supply chamber in the two chambers of the air storage cylinder according to the working mode;
and if the air pressure of the air supply chamber is greater than or equal to the second threshold value, returning to execute the step of determining the air supply chamber and the non-air supply chamber in the two chambers of the air storage cylinder according to the working mode.
8. The method according to any one of claims 1 to 6, wherein the obtaining of the operating mode of the air reservoir comprises:
acquiring an ambient temperature;
and if the environment temperature is greater than a preset temperature value and lasts for a preset time period, determining that the working mode is the non-cold region mode, otherwise, determining that the working mode is the cold region mode.
9. An air pressure control device for a vehicle air reservoir, comprising:
the acquisition module is used for acquiring the working modes of the air storage cylinder, wherein the working modes comprise a cold region mode and a non-cold region mode;
the determining module is used for determining an air supply chamber and a non-air supply chamber in the two chambers of the air storage cylinder according to the working mode;
and the control module is used for determining whether the non-air supply chamber is inflated according to the air pressure of the non-air supply chamber.
10. A vehicle air reservoir system, comprising: a controller, an air pump and an air reservoir; the controller is respectively connected with the air pump and the air storage cylinder, and the air pump is connected with the air storage cylinder;
the air storage cylinder comprises two chambers, a communication valve is arranged on a passage between the two chambers, a control valve is arranged at an inlet and an outlet of each chamber, and a safety valve is also arranged on each chamber;
the air pump is used for inflating the chamber;
the controller is configured to perform the method of any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910649903.5A CN110341671B (en) | 2019-07-18 | 2019-07-18 | Air pressure control method and device for vehicle air reservoir and vehicle air reservoir system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910649903.5A CN110341671B (en) | 2019-07-18 | 2019-07-18 | Air pressure control method and device for vehicle air reservoir and vehicle air reservoir system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110341671A CN110341671A (en) | 2019-10-18 |
| CN110341671B true CN110341671B (en) | 2021-03-16 |
Family
ID=68178739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910649903.5A Active CN110341671B (en) | 2019-07-18 | 2019-07-18 | Air pressure control method and device for vehicle air reservoir and vehicle air reservoir system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110341671B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10138908A (en) * | 1996-11-07 | 1998-05-26 | Nissan Diesel Motor Co Ltd | Air over hydraulic brake |
| KR20080008032A (en) * | 2006-07-19 | 2008-01-23 | 현대자동차주식회사 | An air brake system for an automobile |
| JP4748255B2 (en) * | 2009-06-03 | 2011-08-17 | マツダ株式会社 | ENGINE CONTROL METHOD AND CONTROL DEVICE |
| CN202300948U (en) * | 2011-10-28 | 2012-07-04 | 广州铁路职业技术学院 | Air supply system of air compressor |
| CN203020298U (en) * | 2012-12-19 | 2013-06-26 | 北汽福田汽车股份有限公司 | Air pressure braking system of car and car |
| CN207875616U (en) * | 2017-09-30 | 2018-09-18 | 东风商用车有限公司 | Air supply system for air brake |
| CN207345791U (en) * | 2017-11-03 | 2018-05-11 | 中国第一汽车股份有限公司 | Pure electric automobile air supply system |
| CN108501926B (en) * | 2018-05-28 | 2023-09-22 | 安徽安凯汽车股份有限公司 | Brake energy storage device of pure electric bus and working method thereof |
-
2019
- 2019-07-18 CN CN201910649903.5A patent/CN110341671B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110341671A (en) | 2019-10-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10883662B2 (en) | Gas supply device, hydrogen station, and gas supply method | |
| US7722331B2 (en) | Control system for air-compressing apparatus | |
| CN110649287B (en) | Fuel cell engine system, gas supply system thereof and control method | |
| KR101790545B1 (en) | Fluid compression system and control device therefor | |
| US9650029B2 (en) | Compressed air supply system and method for operating a compressed air supply system | |
| US9931900B2 (en) | Air suspension system | |
| EP3184331A1 (en) | Air suspension device | |
| US20070214963A1 (en) | Charging system | |
| CN110341671B (en) | Air pressure control method and device for vehicle air reservoir and vehicle air reservoir system | |
| JP4702078B2 (en) | Air suspension device | |
| JP4747513B2 (en) | Gas supply device | |
| CN104747411B (en) | The compressor of cabinet with pressurization | |
| CN110050149A (en) | Controller for running the method for the pneumatic regulation system of transmission device and for executing this method | |
| JP2004330839A (en) | Compressed air supply device | |
| CN114517784B (en) | Air compressor control system and method and vehicle | |
| JP7163871B2 (en) | fuel cell system | |
| JP5444264B2 (en) | Control device for gas compressor | |
| CN211623761U (en) | Compressor and air conditioning unit | |
| CN110439881B (en) | Cyclic loading control device and method | |
| RU2480635C1 (en) | Bench for hydraulic tests of large volume and high pressure tanks for fatigue life | |
| US20190345938A1 (en) | Vacuum pump system and method for operating a vacuum pump system | |
| CN114198920B (en) | Method and device for controlling refrigerant circulation system and refrigerant circulation system | |
| US11035520B1 (en) | Method for controlling compression system, compression system, and hydrogen station | |
| US10767640B2 (en) | Method for operating an oil level regulator | |
| US20240026870A1 (en) | Air Compressor With Multiple Air Tank Pressure Sections |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |