CN114572927B - Brake fluid filling system and method - Google Patents
Brake fluid filling system and method Download PDFInfo
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- CN114572927B CN114572927B CN202110335611.1A CN202110335611A CN114572927B CN 114572927 B CN114572927 B CN 114572927B CN 202110335611 A CN202110335611 A CN 202110335611A CN 114572927 B CN114572927 B CN 114572927B
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- 239000012530 fluid Substances 0.000 title claims abstract description 313
- 238000000034 method Methods 0.000 title claims abstract description 41
- 239000007788 liquid Substances 0.000 claims abstract description 90
- 230000008569 process Effects 0.000 claims description 13
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000005429 filling process Methods 0.000 description 5
- 239000000945 filler Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/02—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/06—Details or accessories
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/06—Details or accessories
- B67D7/08—Arrangements of devices for controlling, indicating, metering or registering quantity or price of liquid transferred
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/06—Details or accessories
- B67D7/32—Arrangements of safety or warning devices; Means for preventing unauthorised delivery of liquid
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Theoretical Computer Science (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The present disclosure relates to a brake fluid filling system and method, and relates to the technical field of vehicles, the system comprising: the brake fluid pump, first pressure sensor and the controller that is connected with brake fluid pump and first pressure sensor respectively, the controller is used for controlling brake fluid pump to continuously fill brake fluid to the brake pipeline, when first pressure sensor detects that the brake fluid pressure in the brake pipeline reaches the preset pressure threshold value, control brake fluid pump stop filling brake fluid to the brake pipeline, wherein, the preset pressure threshold value is calibrated under the condition that brake fluid is full of brake pipeline. The beneficial effects of the present disclosure are: the brake fluid filling can be automatically completed only by inputting a brake fluid filling instruction by an operator, and the working efficiency of the operator can be improved. And on the premise of not vacuumizing, the brake liquid is filled in the brake pipeline, so that the operation is simpler, the cost of the used filling equipment is lower, and the filling equipment is more suitable for filling the brake liquid into the automobile in the after-sales market of the automobile.
Description
Technical Field
The disclosure relates to the technical field of vehicles, in particular to a brake fluid filling system and a brake fluid filling method.
Background
In the after-market of automobiles, two methods for filling brake fluid are mainly available, one is manual filling, one person is required to continuously step on a brake pedal of a vehicle in a cab so as to pressurize the brake fluid by using a brake pump of the vehicle, the brake fluid is pressurized to a brake pipeline, the other person opens an exhaust valve of the brake pipeline at the bottom of the vehicle, and air in the brake pipeline is discharged by using the flow of the brake fluid. The manual filling mode requires more staff, and whether the air in the brake pipeline is exhausted or not needs to be judged empirically. The other is machine filling, wherein the brake fluid is filled after vacuumizing by vacuumizing a brake pipeline. This way of filling has a high vacuum requirement on the brake line, and a slight leak can lead to a filling failure.
Therefore, how to provide a brake fluid filling system and a method thereof, which can improve the brake fluid filling efficiency and reduce the cost of brake fluid filling equipment, is a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The disclosure provides a brake fluid filling system and a brake fluid filling method, which are used for solving the technical problems of low efficiency and high cost of the existing hydraulic brake fluid filling mode.
To achieve the above object, in a first aspect, the present disclosure provides a brake fluid filling system comprising:
a brake fluid pump, a first pressure sensor, and a controller connected to the brake fluid pump and the first pressure sensor, respectively;
the brake liquid pump is used for filling brake liquid into a brake pipeline of a hydraulic brake system connected with the brake liquid pump;
the first pressure sensor is used for detecting brake fluid pressure in the brake pipeline;
the controller is used for controlling the brake liquid pump to continuously fill the brake liquid into the brake pipeline until the first pressure sensor detects that the brake liquid pressure in the brake pipeline reaches a preset pressure threshold value, and controlling the brake liquid pump to stop filling the brake liquid into the brake pipeline, wherein the preset pressure threshold value is calibrated under the condition that the brake liquid is filled in the brake pipeline.
Optionally, the controller is specifically configured to:
and controlling the brake liquid pump to continuously fill the brake liquid into the brake pipeline until the first pressure sensor detects that the brake liquid pressure in the brake pipeline reaches the preset pressure threshold value and the preset pressure threshold value is maintained for a preset time period, and controlling the brake liquid pump to stop filling the brake liquid into the brake pipeline.
Optionally, the controller is further configured to:
when the fact that the brake fluid pressure in the brake pipeline cannot reach the preset pressure threshold value or the brake fluid pressure in the brake pipeline cannot maintain the preset pressure threshold value for the preset duration is detected in the process of filling the brake fluid, the controller writes prompt information for indicating that the brake fluid fails to be pressurized into an electronic control unit of the hydraulic brake system.
Optionally, the system further comprises:
the second pressure sensor is used for detecting brake fluid pressure at a fluid outlet of the brake pipeline;
the controller is further used for controlling the brake liquid pump to stop filling the brake liquid into the brake pipeline when the difference between the brake liquid pressure at the liquid outlet of the brake pipeline and the brake liquid pressure detected by the first pressure sensor meets a preset threshold value.
Optionally, the system further comprises:
a liquid volume sensor connected to the controller for detecting a flow rate of brake liquid passing through the brake liquid pump;
the controller is also used for determining the volume of the brake fluid filled into the hydraulic brake system according to the flow of the brake fluid detected by the fluid volume sensor.
In a second aspect, the present disclosure further provides a brake fluid filling method applied to the controller in the brake fluid filling system according to the above embodiment, the method includes:
receiving a brake fluid filling instruction;
and responding to the brake fluid filling instruction, controlling the brake fluid pump to continuously fill the brake fluid into a brake pipeline of a hydraulic brake system connected with the brake fluid pump until the first pressure sensor detects that the brake fluid pressure in the brake pipeline reaches a preset pressure threshold value, and controlling the brake fluid pump to stop filling the brake fluid into the brake pipeline, wherein the preset pressure threshold value is calibrated under the condition that the brake fluid is filled in the brake pipeline.
Optionally, the controlling the brake liquid pump continuously fills the brake liquid into a brake pipeline of a hydraulic brake system connected with the brake liquid pump until the first pressure sensor detects that the brake liquid pressure in the brake pipeline reaches a preset pressure threshold value, and controlling the brake liquid pump to stop filling the brake liquid into the brake pipeline comprises:
and controlling the brake liquid pump to continuously fill the brake liquid into the brake pipeline until the first pressure sensor detects that the brake liquid pressure in the brake pipeline reaches the preset pressure threshold value and the preset pressure threshold value is maintained for a preset time period, and controlling the brake liquid pump to stop filling the brake liquid into the brake pipeline.
Optionally, the method further comprises:
when the fact that the brake fluid pressure in the brake pipeline cannot reach the preset pressure threshold value or the brake fluid pressure in the brake pipeline cannot maintain the preset pressure threshold value for the preset duration is detected in the process of filling the brake fluid, prompt information for indicating that the brake fluid fails to be pressurized is written into an electronic control unit of the hydraulic brake system.
Optionally, the brake fluid filling system further comprises a second pressure sensor for detecting brake fluid pressure at a fluid outlet of the brake pipe;
the method further comprises the steps of:
acquiring brake fluid pressure at a fluid outlet of the brake pipeline, which is detected by the second pressure sensor;
and when the difference between the brake fluid pressure at the liquid outlet of the brake pipeline and the brake fluid pressure detected by the first pressure sensor meets a preset threshold value, controlling the brake fluid pump to stop filling the brake fluid into the brake pipeline.
Optionally, the brake fluid filling system further comprises a fluid volume sensor connected to the controller for detecting a flow rate of brake fluid through the brake fluid pump;
the method further comprises the steps of:
and determining the volume of the brake fluid filled into the hydraulic brake system according to the flow of the brake fluid passing through the brake fluid pump detected by the fluid volume sensor.
According to the technical scheme, the brake liquid is filled into the brake pipeline of the hydraulic brake system by controlling the brake liquid pump, and the brake liquid is continuously filled until the brake liquid pressure in the brake pipeline reaches the preset threshold value, so that the brake pipeline can be ensured to be full of the brake liquid. Compared with the prior art, the brake pipe is filled with brake liquid on the premise of not vacuumizing, the operation is simpler, the used filling equipment is lower in cost, and the brake pipe is more suitable for filling brake liquid into an automobile in the after-sales market. According to the system, only the brake fluid filling instruction is input by an operator, and then the additional operation of the filling process by the operator is not needed, so that the working efficiency of the operator can be improved.
Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:
FIG. 1 is a schematic illustration of a brake fluid filling system according to an exemplary embodiment;
FIG. 2 is a schematic illustration of the operation of the brake fluid filling system;
fig. 3 is a flow chart illustrating a brake fluid filling method according to an exemplary embodiment.
Detailed Description
Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.
Fig. 1 is a schematic diagram of a brake fluid filling system according to an exemplary embodiment. As shown in fig. 1, an embodiment of the present disclosure provides a brake fluid filling system, comprising:
a brake fluid pump 10, a first pressure sensor 20, and a controller 30 connected to the brake fluid pump 10 and the first pressure sensor 20, respectively.
Wherein the brake fluid pump 10 is used for filling brake fluid into a brake pipeline of a hydraulic brake system 70 connected with the brake fluid pump 10; the first pressure sensor 20 is used for detecting brake fluid pressure in the brake pipeline; the controller 30 is configured to control the brake fluid pump 10 to continuously fill the brake fluid into the brake pipe until the first pressure sensor 20 detects that the brake fluid pressure in the brake pipe reaches a preset pressure threshold, where the preset pressure threshold is calibrated when the brake fluid is filled into the brake pipe.
Here, the hydraulic brake system 70 to be filled with the brake fluid is connected to the brake fluid pump 10 through the filling pipe 60, and the brake fluid pump 10 is used to fill the brake fluid to the hydraulic brake system 70 under the control of the controller 30. The hydraulic brake system 70 may be an antilock brake system (antilock brake system, ABS) or an electronic stability system (Electronic Stability Program, ESP). The brake line of the hydraulic brake system 70 may include a master cylinder 701, a brake 702, and a brake oil pipe 703 communicating the master cylinder and the brake, the brake 702 being a brake for braking provided to front and rear wheels, the brake oil pipe 703 being for supplying brake fluid of the master cylinder 701 to the brake 702.
After the master cylinder 701 in the hydraulic brake system 70 to be filled with brake fluid is connected to the brake fluid pump 10, the operator inputs a brake fluid filling command to start the brake fluid filling process. The process specifically comprises the following steps: the controller 30 activates the internal valves and motors of the hydraulic brake system 70, and then the brake fluid pump 10 starts to fill the brake master cylinder 701 in the hydraulic brake system 70 with brake fluid until the first pressure sensor 20 detects that the brake fluid pressure in the brake pipe reaches the preset pressure threshold value, and then controls the brake fluid pump 10 to stop filling the brake pipe with brake fluid. The first pressure sensor 20 may be provided in the master cylinder 701 or in the brake oil pipe 703.
Wherein, by continuously filling the brake fluid into the brake pipe, the brake fluid pressure in the brake pipe reaches the preset pressure threshold value, the brake pipe can be filled with the brake fluid under the pressure of the preset pressure threshold value, after the brake fluid is filled in the brake pipe, the brake fluid pressure in the brake pipe is reduced, then the hydraulic brake system is sealed, the brake fluid filling system is removed from being connected with the pipeline of the hydraulic brake system, and the brake fluid filling system is electrically connected with the pipeline of the hydraulic brake system, for example, the brake fluid pump 10 is disconnected with the pipeline of the brake master cylinder 701, and the first pressure sensor 20 is disconnected with the hydraulic brake system 70.
It should be appreciated that the output of the brake fluid pump 10 is greater than the preset pressure threshold, for example, the preset pressure threshold is preferably 4bar and the output of the brake fluid pump 10 is greater than 4bar. Of course, the brake fluid pump 10 may or may not fill the brake fluid at the maximum output power when filling the brake fluid.
Thus, by controlling the brake fluid pump 10 to fill the brake line of the hydraulic brake system 70 with brake fluid and continuously pressurizing the brake fluid pressure in the brake line to reach a preset threshold value, it is possible to ensure that the brake line is filled with brake fluid. Compared with the prior art, the brake fluid filling device has the advantages that the brake fluid can be filled in the brake pipeline on the premise of not vacuumizing, the operation is simpler, the used filling equipment is lower in cost, and the brake fluid filling device is more suitable for filling the brake fluid into automobiles in the after-sales market of the automobiles. It is worth to say that the brake fluid filling system can be provided with a plurality of brake fluid filling requirements of vehicles at different angles, and the system only needs an operator to input a brake fluid filling instruction and does not need the operator to carry out additional operation on the filling process, so that the working efficiency of the operator can be improved.
In addition, as shown in fig. 1, the brake fluid filling system may further include a key, a bulb indicator, and a buzzer. The key is used for inputting control instructions, such as brake fluid filling instructions, stopping instructions and the like. The bulb indicator lamp is used for outputting lamplight alarm information, and the buzzer is used for outputting sound alarm information. Wherein the controller 30 constructs a logic control system through the SW algorithm module.
In one implementation, the controller 30 is specifically configured to:
and controlling the brake liquid pump 10 to continuously fill the brake liquid into the brake pipeline until the first pressure sensor 20 detects that the brake liquid pressure in the brake pipeline reaches the preset pressure threshold value and maintains the preset pressure threshold value for a preset time period, and controlling the brake liquid pump 10 to stop filling the brake liquid into the brake pipeline.
Here, the brake fluid pump 10 continuously delivers brake fluid to the brake pipe, and when the brake fluid pressure in the brake pipe reaches the preset pressure threshold value, the brake fluid pump 10 continuously delivers brake fluid to the brake pipe until it is determined that the brake pipe is filled with brake fluid when the brake fluid pressure in the brake pipe is maintained at the preset pressure threshold value for a preset period of time, and the controller 30 controls the brake fluid pump 10 to stop filling the brake fluid.
When the brake fluid pressure in the brake pipe is pressurized to a preset pressure threshold value, air may still exist in the brake pipe, so that the brake fluid pressure drops again after the brake fluid pressure reaches the preset pressure threshold value. Therefore, by maintaining the brake fluid pressure in the brake pipe at the preset pressure threshold value for the preset period of time, it is possible to ensure that the brake pipe is filled with brake fluid and to press out all the gas in the brake fluid. For example, when the brake fluid pressure in the brake pipe reaches 4bar and is maintained for 2s, it is determined that the brake pipe is filled with brake fluid.
It should be appreciated that the preset time period may be based on the time period required for the brake pipe to completely remove air during actual filling.
In one implementation, the controller 30 is further configured to:
when it is detected that the brake fluid pressure in the brake pipe cannot reach the preset pressure threshold value or the brake fluid pressure in the brake pipe cannot maintain the preset pressure threshold value for the preset duration in the process of filling the brake fluid, the controller 30 writes prompt information for indicating that the brake fluid is pressurized failure into an electronic control unit of the hydraulic brake system.
Here, the controller 30 is communicatively connected to an Electronic Control Unit (ECU) of the hydraulic brake system 70, and if the first pressure sensor 20 detects that the pressure in the brake pipe cannot reach the preset pressure threshold value or that the brake fluid pressure in the brake pipe cannot reach the preset pressure threshold value but cannot maintain the preset pressure threshold value for a preset duration, the controller 30 writes prompt information for indicating that the pressurization of the brake fluid fails into the electronic control unit of the hydraulic brake system 70, so that an operator can know a failure position of the brake fluid filling according to the prompt information, that is, according to the prompt information, let the operator know that the reason for the failure in the brake fluid filling process is that the brake fluid pressure cannot reach the preset pressure threshold value or cannot maintain the preset pressure threshold value for the preset duration, thereby allowing the operator to check whether the hydraulic brake system has a sealing problem according to the prompt information. The specific operation process can be as follows: a processing byte is written to an EEPROM (electrically charged erasable programmable read only memory) of the electronic control unit to indicate at which stage the filling process has failed, thereby increasing the convenience of the operator in filling the brake fluid.
It should be appreciated that upon the operator actively entering a fill stop command, the controller 30 likewise writes a processing byte to the EEPROM of the electronic control unit of the hydraulic brake system 70 to indicate that the brake fluid fill process has terminated.
In one implementation, the system further comprises:
a second pressure sensor 40 for detecting a brake fluid pressure at a fluid outlet of the brake pipe;
the controller 30 is further configured to control the brake fluid pump 10 to stop filling the brake fluid into the brake pipe when a difference between the brake fluid pressure at the fluid outlet of the brake pipe and the brake fluid pressure detected by the first pressure sensor 20 meets a preset threshold.
Here, the brake fluid pressure at the fluid outlet of the brake pipe means that the brake oil pipe 703 is led to the fluid outlets of the 4 brakes of the vehicle. As shown in fig. 1, the brake fluid pump 10 is connected to a fluid inlet of a brake main pump 701 of the hydraulic brake system through two fill lines 60 to deliver brake fluid to the fluid inlet through the fill lines 60. After the brake pipe is filled with the brake fluid, when the difference between the pressure at the fluid outlet of the brake oil pipe 703 and the pressure at the fluid inlet of the brake main pump 701 satisfies a preset threshold, it indicates that the brake fluid filling is completed, thereby controlling the brake fluid pump 10 to stop filling the brake fluid into the brake pipe.
It will be appreciated that the difference value meets a preset threshold value, indicating that the pressure value at the outlet of the brake pipe 703 leading to the 4 wheels of the vehicle is close to the pressure value at the outlet of the filler pipe 60, indicating that the brake pipe has been emptied of gas. The preset threshold value can be set according to actual conditions.
In one implementation, the system further comprises:
a liquid volume sensor 50 connected to the controller 30 for detecting a flow rate of brake liquid passing through the brake liquid pump 10;
the controller is also configured to determine a volume of brake fluid to be applied to the hydraulic brake system based on the flow of brake fluid detected by the fluid volume sensor 50.
Here, the liquid volume sensor 50 may be provided in the filler pipe 60 to detect the flow rate of the brake liquid passing through the brake liquid pump 10. The controller receives the flow rate of the brake fluid detected by the fluid volume sensor 50, and calculates the volume of the brake fluid to be charged into the hydraulic brake system 70 based on the flow rate of the brake fluid.
The flow rate may be a brake fluid flow rate per unit time or a total brake fluid flow rate. By means of the liquid volume sensor 50, the volume of brake liquid flowing through the brake line can be determined.
The following describes the above embodiments in detail by way of an example.
FIG. 2 is a schematic illustration of the operation of the brake fluid filling system. As shown in fig. 2, the first stage refers to a period of time required for the hydraulic brake system 70 to be connected to the brake fluid filling system in a pipeline and electrically, the second stage refers to a period of time required for the filling of the brake fluid to reach a preset pressure threshold value and for the maintenance of the preset pressure threshold value to reach a preset period of time, the third stage refers to a period of time required for the brake fluid pressure to be reduced to a certain pressure threshold value, and the fourth stage refers to a period of time required for the hydraulic brake system 70 to be disconnected from the brake fluid filling system in a pipeline and electrically.
The hydraulic brake system 70 to be charged is connected to the brake fluid pump 10, including the piping connection and the electrical connection, during which the brake fluid pressure in the brake piping is as shown in stage i. After the operator inputs a brake fluid filling command, the controller 30 controls the brake fluid pump 10 to fill the brake fluid in the brake line of the hydraulic brake system 70 through the filling line 60 until the brake fluid pressure in the brake line reaches a preset pressure threshold value, and maintains the brake fluid pressure in the brake line at the preset pressure threshold value for a preset period of time, according to the received brake fluid filling command. The process is shown in a second stage, the brake fluid pressure in the brake pipeline is gradually increased, and after the brake fluid pressure reaches a preset pressure threshold value, the brake fluid pressure is fluctuated up and down at the preset pressure threshold value until the preset pressure threshold value is maintained for a preset duration, so that the brake pipeline can be filled with the filled brake fluid under the action of the brake fluid pressure. After the brake fluid fills the brake line, the brake fluid pressure in the brake line is reduced. The process is shown in stage III, where the brake fluid pressure in the brake line is gradually decreased. After dropping to a certain threshold, the brake line is sealed, the filler line 60 is removed, and the electrical connection is broken. The process is shown in stage IV.
In addition, if the brake fluid pressure is not able to reach the preset pressure threshold value all the time during pressurization, or the preset pressure threshold value is not able to be maintained for a preset period of time, or a filling stop instruction input by a user is received, the controller 30 writes a process identification processing byte into the ECU of the hydraulic brake system 70 to indicate a failure position of pressurization failure to the operator.
Fig. 3 is a flow chart illustrating a brake fluid filling method according to an exemplary embodiment. The brake fluid filling method is applied to the controller in the brake fluid filling system according to the above embodiment, as shown in fig. 3, and includes:
s110, receiving a brake fluid filling instruction.
And S120, responding to the brake fluid filling instruction, controlling the brake fluid pump to continuously fill the brake fluid into a brake pipeline of a hydraulic brake system connected with the brake fluid pump until the first pressure sensor detects that the brake fluid pressure in the brake pipeline reaches a preset pressure threshold value, and controlling the brake fluid pump to stop filling the brake fluid into the brake pipeline, wherein the preset pressure threshold value is calibrated under the condition that the brake fluid is full of the brake pipeline.
Here, in S110, after the hydraulic brake system to be filled with the brake fluid is connected to the brake fluid pump, the operator inputs a brake fluid filling command by pressing a key. In S120, the controller starts the internal valve and the motor of the hydraulic brake system in response to the brake fluid filling command, and then the brake fluid pump starts to fill the brake fluid into the hydraulic brake system until the first pressure sensor detects that the brake fluid pressure in the brake pipe reaches the preset pressure threshold value, and then controls the brake fluid pump to stop filling the brake fluid into the brake pipe.
In one implementation manner, in S120, the controlling the brake fluid pump to continuously fill the brake fluid into the brake pipe of the hydraulic brake system connected to the brake fluid pump until the first pressure sensor detects that the brake fluid pressure in the brake pipe reaches a preset pressure threshold value, and controlling the brake fluid pump to stop filling the brake fluid into the brake pipe includes:
and controlling the brake liquid pump to continuously fill the brake liquid into the brake pipeline until the first pressure sensor detects that the brake liquid pressure in the brake pipeline reaches the preset pressure threshold value and the preset pressure threshold value is maintained for a preset time period, and controlling the brake liquid pump to stop filling the brake liquid into the brake pipeline.
In one implementation, the method further comprises:
when the fact that the brake fluid pressure in the brake pipeline cannot reach the preset pressure threshold value or the brake fluid pressure in the brake pipeline cannot maintain the preset pressure threshold value for the preset duration is detected in the process of filling the brake fluid, prompt information for indicating that the brake fluid fails to be pressurized is written into an electronic control unit of the hydraulic brake system.
In one possible embodiment, the brake fluid filling system further comprises a second pressure sensor for detecting a brake fluid pressure at a fluid outlet of the brake pipe;
the method further comprises the steps of:
acquiring brake fluid pressure at a fluid outlet of the brake pipeline, which is detected by the second pressure sensor;
and when the difference between the brake fluid pressure at the liquid outlet of the brake pipeline and the brake fluid pressure detected by the first pressure sensor meets a preset threshold value, controlling the brake fluid pump to stop filling the brake fluid into the brake pipeline.
In one embodiment, the brake fluid filling system further comprises a fluid volume sensor connected to the controller for detecting a flow rate of brake fluid through the brake fluid pump;
the method further comprises the steps of:
and determining the volume of the brake fluid filled into the hydraulic brake system according to the flow of the brake fluid passing through the brake fluid pump detected by the fluid volume sensor.
The detailed implementation of the brake fluid filling method is described in detail in the brake fluid filling system, and will not be described in detail here.
The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.
In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present disclosure does not further describe various possible combinations.
Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.
Claims (10)
1. A brake fluid filling system, comprising:
a brake fluid pump, a first pressure sensor, and a controller connected to the brake fluid pump and the first pressure sensor, respectively;
the brake liquid pump is used for filling brake liquid into a brake pipeline of a hydraulic brake system connected with the brake liquid pump;
the first pressure sensor is used for detecting brake fluid pressure in the brake pipeline;
the controller is used for controlling the brake liquid pump to continuously fill the brake liquid into the brake pipeline until the first pressure sensor detects that the brake liquid pressure in the brake pipeline reaches a preset pressure threshold value, and controlling the brake liquid pump to stop filling the brake liquid into the brake pipeline, wherein the preset pressure threshold value is calibrated under the condition that the brake liquid is filled in the brake pipeline.
2. Brake fluid filling system according to claim 1, characterized in that the controller is specifically adapted to:
and controlling the brake liquid pump to continuously fill the brake liquid into the brake pipeline until the first pressure sensor detects that the brake liquid pressure in the brake pipeline reaches the preset pressure threshold value and the preset pressure threshold value is maintained for a preset time period, and controlling the brake liquid pump to stop filling the brake liquid into the brake pipeline.
3. The brake fluid filling system according to claim 2, wherein the controller is further configured to:
when the fact that the brake fluid pressure in the brake pipeline cannot reach the preset pressure threshold value or the brake fluid pressure in the brake pipeline cannot maintain the preset pressure threshold value for the preset duration is detected in the process of filling the brake fluid, the controller writes prompt information for indicating that the brake fluid fails to be pressurized into an electronic control unit of the hydraulic brake system.
4. A brake fluid filling system according to any one of claims 1 to 3, further comprising:
the second pressure sensor is used for detecting brake fluid pressure at a fluid outlet of the brake pipeline;
the controller is further used for controlling the brake liquid pump to stop filling the brake liquid into the brake pipeline when the difference between the brake liquid pressure at the liquid outlet of the brake pipeline and the brake liquid pressure detected by the first pressure sensor meets a preset threshold value.
5. A brake fluid filling system according to any one of claims 1 to 3, further comprising:
a liquid volume sensor connected to the controller for detecting a flow rate of brake liquid passing through the brake liquid pump;
the controller is also used for determining the volume of the brake fluid filled into the hydraulic brake system according to the flow of the brake fluid detected by the fluid volume sensor.
6. A brake fluid filling method for use with a controller in a brake fluid filling system according to claim 1, the method comprising:
receiving a brake fluid filling instruction;
and responding to the brake fluid filling instruction, controlling the brake fluid pump to continuously fill the brake fluid into a brake pipeline of a hydraulic brake system connected with the brake fluid pump until the first pressure sensor detects that the brake fluid pressure in the brake pipeline reaches a preset pressure threshold value, and controlling the brake fluid pump to stop filling the brake fluid into the brake pipeline, wherein the preset pressure threshold value is calibrated under the condition that the brake fluid is filled in the brake pipeline.
7. The brake fluid charging method of claim 6, wherein controlling the brake fluid pump to continuously charge brake fluid to a brake line of a hydraulic brake system connected to the brake fluid pump until the first pressure sensor detects that brake fluid pressure in the brake line reaches a preset pressure threshold value, comprises:
and controlling the brake liquid pump to continuously fill the brake liquid into the brake pipeline until the first pressure sensor detects that the brake liquid pressure in the brake pipeline reaches the preset pressure threshold value and the preset pressure threshold value is maintained for a preset time period, and controlling the brake liquid pump to stop filling the brake liquid into the brake pipeline.
8. The brake fluid filling method according to claim 7, characterized in that the method further comprises:
when the fact that the brake fluid pressure in the brake pipeline cannot reach the preset pressure threshold value or the brake fluid pressure in the brake pipeline cannot maintain the preset pressure threshold value for the preset duration is detected in the process of filling the brake fluid, prompt information for indicating that the brake fluid fails to be pressurized is written into an electronic control unit of the hydraulic brake system.
9. The brake fluid charging method of claim 6, wherein said brake fluid charging system further comprises a second pressure sensor for detecting brake fluid pressure at a fluid outlet of said brake pipe;
the method further comprises the steps of:
acquiring brake fluid pressure at a fluid outlet of the brake pipeline, which is detected by the second pressure sensor;
and when the difference between the brake fluid pressure at the liquid outlet of the brake pipeline and the brake fluid pressure detected by the first pressure sensor meets a preset threshold value, controlling the brake fluid pump to stop filling the brake fluid into the brake pipeline.
10. The brake fluid charging method of claim 6, wherein the brake fluid charging system further comprises a fluid volume sensor coupled to the controller for detecting a flow of brake fluid through the brake fluid pump;
the method further comprises the steps of:
and determining the volume of the brake fluid filled into the hydraulic brake system according to the flow of the brake fluid passing through the brake fluid pump detected by the fluid volume sensor.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106185778A (en) * | 2016-07-12 | 2016-12-07 | 北京长城华冠汽车科技股份有限公司 | The liquid filling equipment of a kind of electric automobile heat management pipeline and method |
| CN207468182U (en) * | 2017-10-19 | 2018-06-08 | 陕西汽车实业有限公司 | Brake filling device |
| CN208485595U (en) * | 2018-07-10 | 2019-02-12 | 徐州工业职业技术学院 | A kind of brake fluid detection supplementary device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106185778A (en) * | 2016-07-12 | 2016-12-07 | 北京长城华冠汽车科技股份有限公司 | The liquid filling equipment of a kind of electric automobile heat management pipeline and method |
| CN207468182U (en) * | 2017-10-19 | 2018-06-08 | 陕西汽车实业有限公司 | Brake filling device |
| CN208485595U (en) * | 2018-07-10 | 2019-02-12 | 徐州工业职业技术学院 | A kind of brake fluid detection supplementary device |
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