WO2021101488A1 - An air brake system leakage test method - Google Patents
An air brake system leakage test method Download PDFInfo
- Publication number
- WO2021101488A1 WO2021101488A1 PCT/TR2020/051124 TR2020051124W WO2021101488A1 WO 2021101488 A1 WO2021101488 A1 WO 2021101488A1 TR 2020051124 W TR2020051124 W TR 2020051124W WO 2021101488 A1 WO2021101488 A1 WO 2021101488A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- software
- test
- leakage
- pressure
- trailer
- Prior art date
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
- G01M3/3236—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers
- G01M3/3272—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers for verifying the internal pressure of closed containers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
-
- 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
- B60T7/00—Brake-action initiating means
- B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
- B60T7/20—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger specially for trailers, e.g. in case of uncoupling of or overrunning by trailer
Definitions
- This invention relates to a leakproofness test method that enables the compressed air produced by the compressor to be stored in vehicles with pneumatic braking systems such as trucks, trailers, semi-trailers, buses, and to check whether the stored air leaks in non-use situations by integrating it into a device.
- the leakage amount of the compressed air stored in the air tanks in vehicles with air braking system is determined, compared with 5% of the system pressure determined by the vehicle manufacturer and it is checked whether the system is leaking. If the system is leaking, preferably (when the towing and trailer type vehicles are tested at the same time), the leakage amount will It is determined separately for the trailer type vehicle and it is checked whether there is any leakage.
- An air brake system subject to the invention leakage test management comprising the following steps;
- the pressure values are automatically taken from the pressure sensor connected to the air tank on the device and the tank pressure is automatically transferred to the software
- the amount of leakage made for the tow tractor is the leakage in the first test Determining the leakage amount of the trailer by subtracting it from the amount,
- the software calculates the data obtained for both the tractor and the trailer and displays them separately on the screen
- the test was made autonomous and more reliable. Performing the test autonomously ensures that the errors caused by the technician (calculation error and errors that may occur in the follow-up of 1 and 3 minutes) and ensure reliable results.
- the leak proof test method of the present invention it is sufficient to start the test by the technician on vehicles with air brake system. It is possible to save at least 4 minutes of time in each test without the technician to keep time with the stopwatch or to deal with tasks such as calculating.
- the amount of the leak can also be determined by determining whether the leak is caused by the tractor part of the vehicle or the trailer part.
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
This invention relates to a leakproofness test method that enables the compressed air produced by the compressor to be stored in vehicles with pneumatic braking systems such as trucks, trailers, semi‐trailers, buses, and to check whether the stored air leaks in non‐use situations by integrating it into a device. With this method, the leakage amount of the compressed air stored in the air tanks in vehicles with air braking system is determined, compared with 5% of the system pressure determined by the vehicle manufacturer and it is checked whether the system is leaking. If the system is leaking, preferably (when the towing and trailer type vehicles are tested at the same time), the leakage amount will It is determined separately for the trailer type vehicle and it is checked whether there is any leakage.
Description
AN AIR BRAKE SYSTEM LEAKAGE TEST METHOD
Technical Area
This invention relates to a leakproofness test method that enables the compressed air produced by the compressor to be stored in vehicles with pneumatic braking systems such as trucks, trailers, semi-trailers, buses, and to check whether the stored air leaks in non-use situations by integrating it into a device.
With this method, the leakage amount of the compressed air stored in the air tanks in vehicles with air braking system is determined, compared with 5% of the system pressure determined by the vehicle manufacturer and it is checked whether the system is leaking. If the system is leaking, preferably (when the towing and trailer type vehicles are tested at the same time), the leakage amount will It is determined separately for the trailer type vehicle and it is checked whether there is any leakage.
Prior Art
Nowadays, in vehicles with air brake system, the compressed air produced by the compressor is required to be stored in air tanks and the stored air to be impermeable when not in use. Every year, thousands of vehicles with air brake systems are tested for impermeability in authorized and private inspection organizations. In the current test methods, the whole process depends on the technician. The technician must perform the mathematical calculations accurately and carefully calculate the time
to be measured during the test. Naturally, the technician will closely monitor the entire testing process. should follow. At this stage, the test should be done flawlessly, time should be used effectively and it should be economical.
In the patent document numbered 2012/04131 in the art, it is related to a leakage test device that enables the leakage control of a test piece related to suspension and steering group parts at the end of the assembly.
In the Patent document numbered 2012/15806, which is another development related to the subject, an air leakage test and measurement device for buses, which is used to test the pneumatic systems of buses with two or three axles, without any errors and precision.
In the aforementioned documents, in cases where the vehicle gives a leak warning, it is not mentioned which part of the vehicle the leak is from and how much leakage is calculated and the values measured.
Description of the invention
An air brake system subject to the invention leakage test management comprising the following steps;
- Front axle test end and airtank of the vehicle to be tested for leakage connecting to the device with the hoses attached to the test tip on it,
- 5% of the system pressure by the operator to the vehicle brake pedal by applying pressure (the pressure applied from the LCD screen and the software on the device is observed),
- Sealing by the operator's drive through the device and software starting the test,
- Entering the system pressure to the device and software,
- Entering the entered system pressure into the relevant field on the software screen and calculating 5% of the system pressure in the relevant field on the software
- On software to distribute the air in the tanks to the brake system countdown timer automatically starts counting down from 1 minute
- At the end of the 1 minute period, the pressure values are automatically taken from the pressure sensor connected to the air tank on the device and the tank pressure is automatically transferred to the software,
- Then the second countdown timer on the software automatically starts counting down from 3 minutes,
- At the end of the 3-minute period, automatically taking the pressure value from the pressure sensor connected to the air tank on the device and transferring it to the relevant area on the software,
- Automatically with the value obtained after 1 minute, 3 minutes subtracting the values obtained at the end of each other and comparing with 5% of the system pressure,
- The difference between the two values is more than 5% of the system pressure the system automatically warns of leakage in case of leakage,
- If the system is leaking, the user is asked whether the test will be continued with the double leak test by the software (In cases where the tractor and trailer type vehicles are tested at the same time),
- Continuing the test with double leak test on the device of the user If the option is selected, a warning appears on the screen and a warning of disconnection of the trailer and towing vehicle,
- Entry of the system pressure of the trailer by the operator,
- From the moment the trailer system pressure is entered, an automatic sealing test for the towing vehicle is also carried out,
- The amount of leakage made for the tow tractor is the leakage in the first test Determining the leakage amount of the trailer by subtracting it from the amount,
- The software calculates the data obtained for both the tractor and the trailer and displays them separately on the screen,
- Leakage of the system for both the tractor and the trailer showing the result on the screen by calculating the software that does not leak.
Thanks to the leakage test method of the invention, the test was made autonomous and more reliable. Performing the test autonomously ensures that the errors caused by the technician (calculation error and errors that may occur in the follow-up of 1 and 3 minutes) and ensure reliable results.
In the leak proof test method of the present invention, it is sufficient to start the test by the technician on vehicles with air brake system. It is possible to save at
least 4 minutes of time in each test without the technician to keep time with the stopwatch or to deal with tasks such as calculating.
In cases where the system leaks thanks to the double impermeability test method in the impermeability test method of the invention, a warning is given whether the double sealing test should be applied (when the tractor and trailer type vehicles are tested at the same time). In cases where the double sealing test is applied, the amount of the leak can also be determined by determining whether the leak is caused by the tractor part of the vehicle or the trailer part.
Claims
1.) An air brake system subject to the invention leakage test management chracterized by the following steps;
- Front axle test end and airtank of the vehicle to be tested for leakage connecting to the device with the hoses attached to the test tip on it, - 5% of the system pressure by the operator to the vehicle brake pedal by applying pressure (the pressure applied from the LCD screen and the software on the device is observed),
- Sealing by the operator's drive through the device and software starting the test,
- Entering the system pressure to the device and software,
- Entering the entered system pressure into the relevant field on the software screen and calculating 5% of the system pressure in the relevant field on the software
- On software to distribute the air in the tanks to the brake system countdown timer automatically starts counting down from 1 minute - At the end of the 1 minute period, the pressure values are automatically taken from the pressure sensor connected to the air tank on the device and the tank pressure is automatically transferred to the software,
- Then the second countdown timer on the software automatically starts counting down from 3 minutes,
- At the end of the 3-minute period, automatically taking the pressure value from the pressure sensor connected to the air tank on the device and transferring it to the relevant area on the software,
- Automatically with the value obtained after 1 minute, 3 minutes subtracting the values obtained at the end of each other and comparing with 5% of the system pressure,
- The difference between the two values is more than 5% of the system pressure the system automatically warns of leakage in case of leakage,
- If the system is leaking, the user is asked whether the test will be continued with the double leak test by the software (In cases where the tractor and trailer type vehicles are tested at the same time),
- Continuing the test with double leak test on the device of the user If the option is selected, a warning appears on the screen and a warning of disconnection of the trailer and towing vehicle,
- Entry of the system pressure of the trailer by the operator,
- From the moment the trailer system pressure is entered, an automatic sealing test for the towing vehicle is also carried out,
- The amount of leakage made for the tow tractor is the leakage in the first test Determining the leakage amount of the trailer by subtracting it from the amount,
- The software calculates the data obtained for both the tractor and the trailer and displays them separately on the screen,
- Leakage of the system for both the tractor and the trailer showing the result on the screen by calculating the software that does not leak.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TR2019/18244 | 2019-11-22 | ||
| TR201918244 | 2019-11-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2021101488A1 true WO2021101488A1 (en) | 2021-05-27 |
Family
ID=75980730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/TR2020/051124 WO2021101488A1 (en) | 2019-11-22 | 2020-11-17 | An air brake system leakage test method |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2021101488A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114046931A (en) * | 2021-11-01 | 2022-02-15 | 柳州机车车辆有限公司 | Detection method for rail vehicle brake pressure sensor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050273227A1 (en) * | 2004-06-07 | 2005-12-08 | Fogelstrom Kenneth A | Air brake system monitoring for pre-trip inspection |
| US20150367828A1 (en) * | 2013-02-12 | 2015-12-24 | Hitachi Automotive Systems, Ltd. | Brake apparatus |
| US9688262B1 (en) * | 2016-06-23 | 2017-06-27 | Bendix Commercial Vehicle Systems Llc | Air monitoring system |
| US20190184958A1 (en) * | 2016-07-01 | 2019-06-20 | Hitachi Automotive Systems, Ltd. | Brake Device and Method of Detecting Fluid Leakage in Brake Device |
-
2020
- 2020-11-17 WO PCT/TR2020/051124 patent/WO2021101488A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050273227A1 (en) * | 2004-06-07 | 2005-12-08 | Fogelstrom Kenneth A | Air brake system monitoring for pre-trip inspection |
| US20150367828A1 (en) * | 2013-02-12 | 2015-12-24 | Hitachi Automotive Systems, Ltd. | Brake apparatus |
| US9688262B1 (en) * | 2016-06-23 | 2017-06-27 | Bendix Commercial Vehicle Systems Llc | Air monitoring system |
| US20190184958A1 (en) * | 2016-07-01 | 2019-06-20 | Hitachi Automotive Systems, Ltd. | Brake Device and Method of Detecting Fluid Leakage in Brake Device |
Non-Patent Citations (1)
| Title |
|---|
| REDLINE DETECTION: "Air Brake NanoLeak Finder Introduction", YOUTUBE, 5 February 2018 (2018-02-05), XP054982095, Retrieved from the Internet <URL:https://www.youtube.com/watch?v=jnKloskA0tM> * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114046931A (en) * | 2021-11-01 | 2022-02-15 | 柳州机车车辆有限公司 | Detection method for rail vehicle brake pressure sensor |
| CN114046931B (en) * | 2021-11-01 | 2024-04-12 | 柳州机车车辆有限公司 | Railway vehicle brake pressure sensor detection method |
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