CN112477838B - Brake system exhaust checking system and method - Google Patents
Brake system exhaust checking system and method Download PDFInfo
- Publication number
- CN112477838B CN112477838B CN202011387393.8A CN202011387393A CN112477838B CN 112477838 B CN112477838 B CN 112477838B CN 202011387393 A CN202011387393 A CN 202011387393A CN 112477838 B CN112477838 B CN 112477838B
- Authority
- CN
- China
- Prior art keywords
- brake
- oil pressure
- brake pedal
- signal acquisition
- exhaust
- 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
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention discloses a brake system exhaust checking system and a method, comprising a brake pipeline oil pressure sensor, a brake pedal stroke measuring device and a signal acquisition device; the signal acquisition equipment is respectively connected with the brake pipeline oil pressure sensor and the brake pedal stroke measurement equipment; the brake pedal stroke measuring equipment is used for monitoring the displacement of the brake pedal in the process of stepping the brake pedal, and the signal acquisition equipment can acquire a brake oil pressure signal and a brake pedal displacement value in real time and compare and analyze a pedal stroke and an oil pressure relation curve. The invention realizes the quick and automatic detection of whether the air of the brake system is completely exhausted, and improves the detection accuracy and efficiency.
Description
Technical Field
The invention relates to the technical field of automobile braking, in particular to a brake system exhaust checking system and method.
Background
The air exhaust method of the traditional manual braking system is adopted in the conditions of trial production stage, part replacement or part maintenance, after sale and the like of the automobile, and the method is summarized as follows: 1. an operator steps on a brake pedal, and judges whether air exists in a brake pipeline system or not by subjectively judging the hardness degree of the brake pedal; 2. if the air exists in the brake system, firstly, the brake pedal is continuously stepped on for multiple times, so that the air in the brake pipeline reaches the wheel brake, the cab is stepped on the brake pedal to be fixed, the other operator at the wheel end unscrews the brake exhaust screw, the brake fluid with the air is discharged from the exhaust screw, the other operator at the wheel end screws the brake exhaust screw, and the operator in the cab loosens the brake pedal to complete one cycle. 3. After the air exhaust points of 4 wheels and other pipelines are subjected to multi-wheel air exhaust operation for multiple times, an operator carries out subjective feeling evaluation on whether the air of the brake system is exhausted completely.
The existing exhaust method is based on subjective evaluation of operators, has higher requirements on subjective evaluation level of the operators, and is not an objective quantification means. According to the invention, through a set of objective quantification method, the air exhaust of the brake system does not depend on the subjective evaluation level of an operation technician, and whether the air exists in the brake system is judged through objective data change trend comparison.
Disclosure of Invention
The invention aims to solve the technical problem that in order to overcome the defects in the prior art, the invention provides the brake system exhaust checking system and the using method thereof, which can realize the quick and automatic detection of whether the air of the brake system is exhausted completely and improve the detection accuracy and efficiency.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a brake system exhaust checking system comprises a brake pipeline oil pressure sensor, brake pedal stroke measuring equipment and signal acquisition equipment; the signal acquisition equipment is respectively connected with the brake pipeline oil pressure sensor and the brake pedal stroke measurement equipment; the brake pedal stroke measuring equipment is used for monitoring the displacement of the brake pedal in the process of stepping the brake pedal, and the signal acquisition equipment can acquire a brake oil pressure signal and a brake pedal displacement value in real time and compare and analyze a pedal stroke and an oil pressure relation curve.
According to the technical scheme, the brake pipeline oil pressure sensor is an automobile ESC (electronic stability control) self-contained pipeline oil pressure sensor or an external pipeline oil pressure sensor.
According to the technical scheme, the brake pedal stroke measuring equipment is a pedal displacement sensor.
According to the technical scheme, the signal acquisition equipment compares and analyzes the pedal travel and the oil pressure relation curve before and after air exhaust, and when the current travel and the oil pressure relation curve are overlapped, the air exhaust of the brake circuit is prompted.
According to the technical scheme, the condition that the relation curve of the front stroke and the back stroke is overlapped with the oil pressure curve means that the deviation value of the two curves is within the set tolerance deviation value.
An operating method of the exhaust checking system of the brake system, which adopts the above-mentioned brake pedal stroke measuring device as a pedal displacement sensor, comprises the following steps:
1) connecting the signal acquisition equipment with an automobile CAN diagnosis port, and reading an oil pressure signal through an automobile ESC;
2) connecting a pedal displacement sensor with signal acquisition equipment;
3) after the brake pedal is continuously and deeply stepped on for multiple times, the brake pedal is stepped on, 1 exhaust screw on the brake caliper is unscrewed, the air in the brake pipeline is sprayed out from the exhaust screw along with the brake fluid, the exhaust screw is screwed, and the brake pedal is loosened;
4) slowly stepping on the brake pedal to gradually increase the stroke of the brake pedal, and reading the stroke of the brake pedal and the brake oil pressure value through signal acquisition equipment;
5) the signal acquisition equipment draws a relation curve of the brake pedal stroke and the brake oil pressure value;
6) repeating the step 3 to the step 5 until the relation curves of the brake pedal travel and the brake oil pressure value of the previous and the next two times coincide to show that the air in the brake circuit is exhausted;
7) and (4) replacing other brake circuits to exhaust air, repeating the steps 3-6, and completely exhausting the air of the brake system when all the brake circuits complete one cycle.
The invention has the following beneficial effects:
the invention uses the relation curve of the brake pedal stroke and the oil pressure for the exhaust inspection of brake air; judging whether the air of the braking system is exhausted completely or not according to the change trend of the relation curve of the front and back multiple strokes and the oil pressure; the method adopts an objective quantification method to replace the traditional subjective feeling air exhaust, can be used for brake performance verification in the automobile development stage, and improves the detection accuracy and efficiency; the invention can also be used in the automobile aftermarket, if the air exists in the braking system, the comfort of braking operation and the braking distance can be influenced, and the safety is influenced; the invention effectively avoids the experience dependence of the subjective air exhaust method on operators.
Drawings
FIG. 1 is a schematic diagram of a brake system exhaust checking system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the connection of the brake system exhaust check system in an embodiment of the present invention;
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Referring to fig. 1 to 2, a brake system exhaust checking system in one embodiment of the present invention includes a brake line oil pressure sensor, a brake pedal stroke measuring device, and a signal collecting device; the signal acquisition equipment is respectively connected with the brake pipeline oil pressure sensor and the brake pedal stroke measurement equipment; the brake pedal stroke measuring equipment is used for monitoring the displacement of the brake pedal in the process of trampling the brake pedal, and the signal acquisition equipment can acquire a brake oil pressure signal and a brake pedal displacement value in real time and compare and analyze pedal stroke before and after air exhaust and an oil pressure relation curve.
Furthermore, the brake pipeline oil pressure sensor is a pipeline oil pressure sensor or an external pipeline oil pressure sensor of the automobile ESC, and the acquisition equipment CAN also adopt the external pipeline oil pressure sensor by reading a pipeline oil pressure value sent by the ESC on the automobile CAN.
Further, the brake pedal stroke measuring device is a pedal displacement amount sensor.
And further, the signal acquisition equipment compares and analyzes the pedal stroke before and after air exhaust with the oil pressure relation curve, and when the current and the latter strokes coincide with the oil pressure relation curve, the signal acquisition equipment gives a prompt that the air in the brake circuit is exhausted.
Further, the coincidence of the relation curve of the oil pressure and the stroke twice before and after means that the deviation value of the two curves is within the set tolerance deviation value.
An operating method of the exhaust checking system of the brake system, which adopts the above-mentioned brake pedal stroke measuring device as a pedal displacement sensor, comprises the following steps:
1) connecting the signal acquisition equipment with an automobile CAN diagnosis port, and reading an oil pressure signal through an automobile ESC;
2) connecting a pedal displacement sensor with signal acquisition equipment;
3) after the brake pedal is continuously and deeply stepped on for multiple times, the brake pedal is stepped on, 1 exhaust screw on the brake caliper is unscrewed, air in a brake pipeline is sprayed out of the exhaust screw along with brake fluid, the exhaust screw is screwed, and the brake pedal is loosened;
4) slowly stepping on the brake pedal to gradually increase the stroke of the brake pedal, and reading the stroke of the brake pedal and the brake oil pressure value through signal acquisition equipment;
5) the signal acquisition equipment draws a relation curve of the brake pedal stroke and the brake oil pressure value;
6) repeating the step 3 to the step 5 until the relation curves of the brake pedal travel and the brake oil pressure value of the previous and the next two times coincide to show that the air in the brake circuit is exhausted;
7) and (4) replacing other brake circuits to exhaust air, repeating the steps 3-6, and completely exhausting the air of the brake system when all the brake circuits complete one cycle.
Further, the automotive ESC is referred to as an automotive electronic stability control system.
Further, CAN is an abbreviation of Controller Area Network (hereinafter referred to as CAN), and is a serial communication protocol that is ISO international standardized.
The working principle of the invention is as follows: the stroke of the brake pedal and the oil pressure of the brake pipeline have a linear growth relation, and when air exists in a pipeline system, the same brake oil is pressed down, so that the stroke of the brake pedal is longer.
As shown in the figure: when the air in a certain circuit is exhausted, the relation curve between the stroke and the oil pressure is not changed, namely the circuit air is exhausted cleanly. The other circuits may be further vented.
The invention can also judge whether the brake pipeline air is exhausted completely by comparing the change of the oil pressure value of a certain fixed stroke, wherein in any stroke L0 in the shown stroke, the pipeline oil pressure is gradually increased, and when P1, P2, P3 and P4 are finally stabilized at the position P4, the air in the circuit is exhausted completely.
The invention also provides a brake system exhaust operation method, which judges whether the air of the brake system is exhausted or not by comparing the change relation between the stroke and the brake oil pressure. The method comprises the following specific steps:
1. connecting the signal acquisition equipment with an automobile CAN diagnosis port, and reading an oil pressure signal sent by an automobile ESC through the signal acquisition equipment;
2. connecting a pedal displacement sensor with a brake pedal and signal acquisition equipment;
3. after the brake pedal is continuously and deeply stepped on for multiple times, the brake pedal is stepped on, 1 exhaust screw on the brake caliper is unscrewed, air in a brake pipeline is sprayed out of the exhaust screw along with brake fluid, the exhaust screw is screwed, and the brake pedal is loosened;
4. slowly stepping on the brake pedal to gradually increase the stroke of the brake pedal, and reading the stroke of the brake pedal and the brake oil pressure value through signal acquisition equipment;
5. the signal acquisition equipment draws a relation curve of the brake pedal stroke and the brake oil pressure value;
6. repeating the step 3, the step 4 and the step 5, wherein the relationship curves of the current and the latter brake pedal strokes and the brake oil pressure values are superposed to show that the air in the loop is exhausted;
7. and replacing other air exhaust loops, and repeating the step 3.4.5.6, wherein when all the loops complete one cycle, the air of the brake system is exhausted.
The above is only a preferred embodiment of the present invention, and certainly, the scope of the present invention should not be limited thereby, and therefore, the present invention is not limited by the scope of the claims.
Claims (4)
1. The exhaust checking system of the brake system is characterized by comprising a brake pipeline oil pressure sensor, brake pedal stroke measuring equipment and signal acquisition equipment; the signal acquisition equipment is respectively connected with the brake pipeline oil pressure sensor and the brake pedal stroke measurement equipment; the brake pedal stroke measuring equipment is used for monitoring the displacement of the brake pedal in the trampling process of the brake pedal, and the signal acquisition equipment can acquire a brake oil pressure signal and a brake pedal displacement value in real time and compare and analyze a pedal stroke and oil pressure relation curve;
the signal acquisition equipment contrasts and analyzes the relation curve of the pedal stroke and the oil pressure before and after air exhaust, and when the current stroke and the oil pressure relation curve coincide with each other twice, the signal acquisition equipment gives a prompt that the air in the brake circuit of the signal acquisition is exhausted.
2. The brake system exhaust checking system of claim 1 wherein the brake line oil pressure sensor is an automotive ESC self-contained line oil pressure sensor or an external line oil pressure sensor.
3. The brake system exhaust gas inspection system of claim 1, wherein the brake pedal stroke measuring device is a pedal displacement amount sensor.
4. A method of operating a brake system exhaust gas check system as set forth in claim 1, wherein the brake pedal stroke measuring device is a pedal displacement amount sensor, said method comprising the steps of:
1) connecting the signal acquisition equipment with an automobile CAN diagnosis port, and reading an oil pressure signal through an automobile ESC;
2) connecting a pedal displacement sensor with signal acquisition equipment;
3) after the brake pedal is continuously and deeply stepped on for multiple times, the brake pedal is stepped on, 1 exhaust screw on the brake caliper is unscrewed, air in a brake pipeline is sprayed out of the exhaust screw along with brake fluid, the exhaust screw is screwed, and the brake pedal is loosened;
4) slowly stepping on the brake pedal to gradually increase the stroke of the brake pedal, and reading the stroke of the brake pedal and the brake oil pressure value through signal acquisition equipment;
5) the signal acquisition equipment draws a relation curve of the brake pedal stroke and the brake oil pressure value;
6) repeating the step 3 to the step 5 until the relation curves of the brake pedal travel and the brake oil pressure value of the previous and the next two times coincide, and indicating that the air in the brake loop acquired by the signal is exhausted;
7) and (5) replacing other brake circuits to exhaust air, repeating the step (3) to the step (6), and when all the brake circuits complete one cycle, exhausting the air of the brake system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011387393.8A CN112477838B (en) | 2020-12-01 | 2020-12-01 | Brake system exhaust checking system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011387393.8A CN112477838B (en) | 2020-12-01 | 2020-12-01 | Brake system exhaust checking system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112477838A CN112477838A (en) | 2021-03-12 |
| CN112477838B true CN112477838B (en) | 2022-05-17 |
Family
ID=74938770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011387393.8A Active CN112477838B (en) | 2020-12-01 | 2020-12-01 | Brake system exhaust checking system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112477838B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113212402B (en) * | 2021-06-23 | 2022-02-11 | 中国第一汽车股份有限公司 | Integrated braking system and integrated braking system control method |
| CN115384474B (en) * | 2022-08-11 | 2023-06-20 | 东风柳州汽车有限公司 | Brake fluid exhaust method, device, equipment and storage medium |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101332813A (en) * | 2008-08-06 | 2008-12-31 | 清华大学 | Vehicle brake efficacy monitoring and alarm system |
| CN201736984U (en) * | 2010-05-19 | 2011-02-09 | 北汽福田汽车股份有限公司 | Exhausting device for vehicle hydraulic brake system |
| CN105818796A (en) * | 2016-04-27 | 2016-08-03 | 奇瑞汽车股份有限公司 | Brake fluid injecting and exhausting device and method and brake system |
| CN106898058A (en) * | 2017-02-21 | 2017-06-27 | 成都雅骏新能源汽车科技股份有限公司 | A kind of data acquisition application apparatus of hydraulic braking system for automobile |
| CN108001438A (en) * | 2017-11-17 | 2018-05-08 | 浙江零跑科技有限公司 | A kind of method for exhausting of braking system of electric car |
| CN207725390U (en) * | 2017-11-17 | 2018-08-14 | 浙江零跑科技有限公司 | A kind of exhaust apparatus of braking system of electric car |
| CN109693655A (en) * | 2017-10-23 | 2019-04-30 | 上海汽车集团股份有限公司 | The liquid feeding method for exhausting and system of brake system of car |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050067895A1 (en) * | 2003-09-25 | 2005-03-31 | Marathe Sameer S. | Apparatus and method of monitoring braking system pressure |
-
2020
- 2020-12-01 CN CN202011387393.8A patent/CN112477838B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101332813A (en) * | 2008-08-06 | 2008-12-31 | 清华大学 | Vehicle brake efficacy monitoring and alarm system |
| CN201736984U (en) * | 2010-05-19 | 2011-02-09 | 北汽福田汽车股份有限公司 | Exhausting device for vehicle hydraulic brake system |
| CN105818796A (en) * | 2016-04-27 | 2016-08-03 | 奇瑞汽车股份有限公司 | Brake fluid injecting and exhausting device and method and brake system |
| CN106898058A (en) * | 2017-02-21 | 2017-06-27 | 成都雅骏新能源汽车科技股份有限公司 | A kind of data acquisition application apparatus of hydraulic braking system for automobile |
| CN109693655A (en) * | 2017-10-23 | 2019-04-30 | 上海汽车集团股份有限公司 | The liquid feeding method for exhausting and system of brake system of car |
| CN108001438A (en) * | 2017-11-17 | 2018-05-08 | 浙江零跑科技有限公司 | A kind of method for exhausting of braking system of electric car |
| CN207725390U (en) * | 2017-11-17 | 2018-08-14 | 浙江零跑科技有限公司 | A kind of exhaust apparatus of braking system of electric car |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112477838A (en) | 2021-03-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112477838B (en) | Brake system exhaust checking system and method | |
| CN100335301C (en) | Active adaptation of control algorithms for a central tire inflation system | |
| CN113119937B (en) | Intelligent brake-by-wire system based on digital twins and prediction control method thereof | |
| CN110435625B (en) | Vacuum degree sensor detection system and method for vacuum boosting system of electric automobile | |
| CN109017741B (en) | Vehicle braking system failure prediction and processing method | |
| CN103596825B (en) | Method for operating a braking system | |
| CN113911094B (en) | Fault detection method and device for brake system and working machine | |
| CN107907280B (en) | ABS hydraulic unit sealing performance testing device and testing method thereof | |
| CN111579181B (en) | Filling test system and method of cooling system | |
| CN109017166B (en) | Device for detecting tire pressure by using sound | |
| CN112208506B (en) | Intelligent fault detection method for air brake device of railway wagon | |
| CN109050512B (en) | Detection system and detection method for tramcar parking brake fault | |
| CN108194543A (en) | A kind of brake block wear condition detecting system and method | |
| KR101894612B1 (en) | Method for calibrating a modulation point of a pneumatic brake booster which is calculated on the basis of a pressure sensor signal | |
| CN109443808B (en) | Vehicle brake intelligent test system interface device | |
| CN214096604U (en) | Railway vehicle brake performance test device | |
| CN103512704A (en) | Vehicle air pressure detection alarm device and method | |
| CN109406171A (en) | A kind of quiet dynamic fault sunykatuib analysis instrument of motor vehicle braking system and its detection method | |
| CN201694186U (en) | Single vehicle brake sensitivity detector for railway vehicles | |
| CN114488994A (en) | Optimization method and device for improving vehicle fault diagnosis robustness | |
| CN111923894A (en) | Calibration system for anti-lock braking system, emergency braking system and method | |
| CN115855658B (en) | Performance evaluation system applied to hydraulic brake hose product | |
| CN204904082U (en) | Regulator response characteristic detection device | |
| KR20210036575A (en) | System and method for brake inspection of vehicle | |
| CN107024311A (en) | Brake fluid system brake real-time pressure monitoring system and method |
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 |