CN112747917B - System and method for measuring pressure change point of automobile brake oil supply valve - Google Patents
System and method for measuring pressure change point of automobile brake oil supply valve Download PDFInfo
- Publication number
- CN112747917B CN112747917B CN202011630214.9A CN202011630214A CN112747917B CN 112747917 B CN112747917 B CN 112747917B CN 202011630214 A CN202011630214 A CN 202011630214A CN 112747917 B CN112747917 B CN 112747917B
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- supply valve
- steel cylinder
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- 230000008859 change Effects 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 28
- 239000010959 steel Substances 0.000 claims abstract description 28
- 238000010998 test method Methods 0.000 claims abstract description 8
- 238000005259 measurement Methods 0.000 claims description 7
- 238000012360 testing method Methods 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 2
- 239000000446 fuel Substances 0.000 description 4
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/003—Machine valves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a pressure change point measuring system of an automobile brake oil supply valve, which comprises a pressure source, a stop valve, a pressure steel cylinder, a pressure sensor, the oil supply valve and an oil tank, wherein one end of the stop valve is connected with the pressure source, a pipeline at the other end of the stop valve is connected with the pressure steel cylinder, the pressure steel cylinder is provided with the pressure sensor, a pipeline at the other side of the stop valve is also connected with the oil supply valve, and the oil supply valve is connected with the oil tank. The invention also discloses a test method of the system for measuring the pressure change point of the automobile brake oil supply valve. The testing method can well measure the opening pressure of the main valve port of the oil supply valve, and provides reference for reasonable design of the oil supply valve.
Description
Technical Field
The invention relates to a system for measuring a pressure change point of an automobile brake oil supply valve.
The invention also relates to a test method of the pressure change point measuring system of the automobile brake oil supply valve.
Background
The oil supply valve of the automobile brake system is one of key parts of an active safety system, and as an inlet valve of the plunger pump, the pressure characteristic of the oil supply valve has a significant influence on the active boosting performance of the pump. The oil supply valve is a two-stage valve and is divided into an auxiliary valve port and a main valve port. The opening pressure of the main valve port is a key feature of the oil supply valve. In the prior standard alignment analysis, the same-row oil supply valve is disassembled, key valve port parameters and electromagnetic valve performance parameters are measured, and the opening pressure of the main valve port is calculated. The disassembly calculation process is time-consuming and labor-consuming, the measured data usually have larger errors, and the calculation result is inaccurate.
Disclosure of Invention
In order to solve the technical problems, the invention provides a low-pressure accumulator P-V characteristic measurement system with accurate calculation.
The invention also relates to a test method of the pressure change point measuring system of the automobile brake oil supply valve.
The invention provides the following technical scheme:
the utility model provides a car braking fuel feed valve pressure change point measurement system, includes pressure source, stop valve, pressure steel bottle, pressure sensor, fuel feed valve and oil tank, stop valve one end is connected with the pressure source, connect the pressure steel bottle on the pipeline of the stop valve other end, install pressure sensor on the pressure steel bottle, the pipeline of stop valve opposite side still is connected with the fuel feed valve, the fuel feed valve is connected with the oil tank.
A test method of a pressure change point measurement system of an automobile brake oil supply valve comprises the following steps:
s1, opening a stop valve, and building the pressure of a steel cylinder to Pa by using a pressure source;
s2, closing a stop valve, and electrifying an oil supply valve;
s3, the pressure sensor records the pressure change of the steel cylinder, and the high pressure flows to the oil tank through a valve port I of the oil supply valve and a valve port II of the oil supply valve;
s4, when the pressure of the steel cylinder is reduced to the opening pressure of the main valve, the main valve is opened, the pressure change rate is increased, and obvious change points appear on a pressure curve;
s5, recording a pressure relief pressure curve of the whole pressure steel cylinder, and recording a pressure change point.
Wherein Pa is in the range of 180-200bar.
Compared with the prior art, the invention has the beneficial effects that: because the initial pressure difference at the two ends of the oil supply valve is larger, the electromagnetic force can only open the small valve port after the oil supply valve is electrified, and the main valve port maintains a closed state. With the pressure of the pressure steel cylinder reduced, when the pressure difference of the oil supply valve is reduced to the opening pressure of the large valve port, the main valve port is opened, the overflow area is increased, and the pressure change rate is increased. A distinct inflection point of the pressure change is shown on the test curve. The testing method can well measure the opening pressure of the main valve port of the oil supply valve, and provides reference for reasonable design of the oil supply valve.
Drawings
FIG. 1 is a schematic diagram of a measurement system according to the present invention.
FIG. 2 is a graph showing the variation of the pressure relief pressure curve of the pressure steel cylinder according to the present invention.
In the figure: 1. a pressure source; 2. a stop valve; 3. a pressure steel cylinder; 4. a pressure sensor; 5. an oil supply valve; 6. and an oil tank.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention relates to a pressure change point measuring system of an automobile brake oil supply valve, which comprises a pressure source 1, a stop valve 2, a pressure steel cylinder 3, a pressure sensor 4, an oil supply valve 5 and an oil tank 6, wherein one end of the stop valve 2 is connected with the pressure source 1, a pipeline at the other end of the stop valve 2 is connected with the pressure steel cylinder 3, the pressure sensor 4 is arranged on the pressure steel cylinder 3, a pipeline at the other side of the stop valve 2 is also connected with the oil supply valve 5, and the oil supply valve 5 is connected with the oil tank 6.
The invention discloses a test method of a pressure change point measurement system of an automobile brake oil supply valve, which comprises the following steps:
s1, opening a stop valve, and building the pressure of a steel cylinder to Pa by using a pressure source;
s2, closing a stop valve, and electrifying an oil supply valve;
s3, the pressure sensor records the pressure change of the steel cylinder, and the high pressure flows to the oil tank through a valve port I of the oil supply valve and a valve port II of the oil supply valve;
s4, when the pressure of the steel cylinder is reduced to the opening pressure of the main valve opening, the main valve opening is opened, the pressure change rate is increased, and obvious change points (transition points with different pressure change rates) appear on a pressure curve;
s5, recording a pressure relief pressure curve of the whole pressure steel cylinder, and recording a pressure change point.
Wherein Pa is in the range of 180-200bar.
As shown in FIG. 2, because the initial pressure difference between two ends of the oil supply valve is larger, for example, the test pressure is 180-200bar, the electromagnetic force can only open the small valve port after the oil supply valve is electrified, and the main valve port is kept in a closed state. With the pressure of the pressure steel cylinder reduced, when the pressure difference of the oil supply valve is reduced to the opening pressure of the large valve port, the main valve port is opened, the overflow area is increased, and the pressure change rate is increased. A distinct inflection point of the pressure change is shown on the test curve.
Compared with the surveying and mapping and calculating means, the testing method can better measure the opening pressure of the main valve port of the oil supply valve and provide reference for reasonably designing the oil supply valve.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. A test method of a pressure change point measurement system of an automobile brake oil supply valve is characterized by comprising the following steps of: the automobile brake oil supply valve pressure change point measuring system comprises a pressure source (1), a stop valve (2), a pressure steel cylinder (3), a pressure sensor (4), an oil supply valve (5) and an oil tank (6), wherein one end of the stop valve (2) is connected with the pressure source (1), the pressure steel cylinder (3) is connected to a pipeline at the other end of the stop valve (2), the pressure sensor (4) is arranged on the pressure steel cylinder (3), the pipeline at the other side of the stop valve (2) is also connected with the oil supply valve (5), and the oil supply valve (5) is connected with the oil tank (6);
the method comprises the following steps:
s1, opening a stop valve, and building the pressure of a steel cylinder to Pa by using a pressure source;
s2, closing a stop valve, and electrifying an oil supply valve;
s3, the pressure sensor records the pressure change of the steel cylinder, and the high pressure flows to the oil tank through a valve port I of the oil supply valve and a valve port II of the oil supply valve;
s4, because the initial pressure difference at two ends of the oil supply valve is large, electromagnetic force can only open the small valve port after the oil supply valve is electrified, and the main valve port maintains a closed state; when the pressure of the steel cylinder is reduced to the opening pressure of the main valve opening, the main valve opening is opened, the pressure change rate is increased, and obvious change points appear on a pressure curve;
s5, recording a pressure relief pressure curve of the whole pressure steel cylinder, and recording a pressure change point.
2. The test method of the pressure change point measurement system of the automobile brake oil supply valve according to claim 1, wherein the test method comprises the following steps of: wherein Pa is in the range of 180-200bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011630214.9A CN112747917B (en) | 2020-12-31 | 2020-12-31 | System and method for measuring pressure change point of automobile brake oil supply valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011630214.9A CN112747917B (en) | 2020-12-31 | 2020-12-31 | System and method for measuring pressure change point of automobile brake oil supply valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112747917A CN112747917A (en) | 2021-05-04 |
| CN112747917B true CN112747917B (en) | 2023-11-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011630214.9A Active CN112747917B (en) | 2020-12-31 | 2020-12-31 | System and method for measuring pressure change point of automobile brake oil supply valve |
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| Country | Link |
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| CN (1) | CN112747917B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001013044A (en) * | 1999-06-28 | 2001-01-19 | Nok Corp | Machine and method for inspection of pressure vessel |
| GB0309687D0 (en) * | 2003-04-29 | 2003-06-04 | Abb Offshore Systems Ltd | Pipeline protection system |
| CN103698078A (en) * | 2013-12-20 | 2014-04-02 | 中国北方车辆研究所 | Device for testing pressure of pressure valve of power battery in opening process |
| CN206523261U (en) * | 2017-02-10 | 2017-09-26 | 肇庆理士电源技术有限公司 | A kind of Capsule valve open and close valve pressure-detecting device |
| CN107830011A (en) * | 2017-09-30 | 2018-03-23 | 潍柴动力股份有限公司 | The method and system of valve port area test are carried out based on excavator complete machine |
| WO2018155068A1 (en) * | 2017-02-24 | 2018-08-30 | ジヤトコ株式会社 | Device for determining normality of electromagnetic control valve |
| CN109187000A (en) * | 2018-09-13 | 2019-01-11 | 格力电器（武汉）有限公司 | Maximum action pressure difference testing device for electronic expansion valve |
-
2020
- 2020-12-31 CN CN202011630214.9A patent/CN112747917B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001013044A (en) * | 1999-06-28 | 2001-01-19 | Nok Corp | Machine and method for inspection of pressure vessel |
| GB0309687D0 (en) * | 2003-04-29 | 2003-06-04 | Abb Offshore Systems Ltd | Pipeline protection system |
| CN103698078A (en) * | 2013-12-20 | 2014-04-02 | 中国北方车辆研究所 | Device for testing pressure of pressure valve of power battery in opening process |
| CN206523261U (en) * | 2017-02-10 | 2017-09-26 | 肇庆理士电源技术有限公司 | A kind of Capsule valve open and close valve pressure-detecting device |
| WO2018155068A1 (en) * | 2017-02-24 | 2018-08-30 | ジヤトコ株式会社 | Device for determining normality of electromagnetic control valve |
| CN107830011A (en) * | 2017-09-30 | 2018-03-23 | 潍柴动力股份有限公司 | The method and system of valve port area test are carried out based on excavator complete machine |
| CN109187000A (en) * | 2018-09-13 | 2019-01-11 | 格力电器（武汉）有限公司 | Maximum action pressure difference testing device for electronic expansion valve |
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| CN112747917A (en) | 2021-05-04 |
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