CN212458480U - Pressure difference flow testing device for electromagnetic valve of automobile composite braking system - Google Patents
Pressure difference flow testing device for electromagnetic valve of automobile composite braking system Download PDFInfo
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- CN212458480U CN212458480U CN202021305072.4U CN202021305072U CN212458480U CN 212458480 U CN212458480 U CN 212458480U CN 202021305072 U CN202021305072 U CN 202021305072U CN 212458480 U CN212458480 U CN 212458480U
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Abstract
The utility model discloses a car composite brake system solenoid valve pressure differential flow testing arrangement, including test valve block and pressure source, the test valve block be used for installing the test solenoid valve, the test valve block on be provided with low pressure hydraulic fluid port and high pressure hydraulic fluid port, pressure source and high pressure hydraulic fluid port be linked together and provide high pressure oil for the test valve block, the low pressure hydraulic fluid port and the load part of test valve block be linked together, low pressure hydraulic fluid port and high pressure hydraulic fluid port department all be connected with pressure sensor, low pressure hydraulic fluid port still be connected with the flowmeter, flowmeter and pressure sensor all link to each other with the oscilloscope electrical property. The utility model discloses can acquire the flow and the pressure differential relation curve that the flow of solenoid valve low pressure port produced along with the pressure variation of high-pressure port fast, when can also testing the same solenoid valve structure, the difference of filter screen mesh number is to the influence of solenoid valve flow and pressure differential curve.
Description
Technical Field
The utility model relates to an automobile parts detection area specifically is an automobile composite braking system solenoid valve pressure differential flow testing arrangement.
Background
The electromagnetic valve is a core part in an actuator of an automobile brake system, and is mainly used for controlling the flow of the brake system to form the pressure of a wheel cylinder and realizing the control of the establishment and release of the pressure in the actuator by accurately adjusting the opening and closing time of the electromagnetic valve. Solenoid valves in brake systems are generally classified into two categories: normally open type solenoid valves and normally closed type solenoid valves. In order to accurately control the flow and pressure in the brake system internal circuit, a solenoid valve flow test is therefore necessary.
The flow characteristic of the electromagnetic valve mainly depends on the structural characteristic of the electromagnetic valve and the pressure difference environment in which the electromagnetic valve is located, and the flow of the electromagnetic valve is too small, so that the braking response time of the electromagnetic valve is too slow, and the requirement of quick response of a braking product is not met. Therefore, the electromagnetic valve in the automobile brake actuator needs to be tested, a relation curve of flow and pressure difference is obtained, whether the design requirement is met or not is determined, the existing electromagnetic valve testing device is complex in structure, the relation curve of flow and pressure difference cannot be obtained quickly, and the influence of a filter screen on the electromagnetic valve on the pressure difference cannot be tested.
SUMMERY OF THE UTILITY MODEL
The utility model provides a car composite brake system solenoid valve pressure differential flow testing arrangement can acquire the flow and the pressure differential relation curve that the flow of solenoid valve low pressure port produced along with the pressure variation of high-pressure port fast, and when can also testing the same solenoid valve structure, the difference of filter screen mesh number is to the influence of solenoid valve flow and pressure differential curve.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a car composite brake system solenoid valve pressure differential flow testing arrangement, includes test valve block and pressure source, the test valve block be used for the installation to test the solenoid valve, the test valve block on be provided with low pressure hydraulic fluid port and high-pressure hydraulic fluid port, the pressure source be linked together with high-pressure hydraulic fluid port and provide high pressure oil for the test valve block, the low pressure hydraulic fluid port and the load part of test valve block be linked together, low pressure hydraulic fluid port and high-pressure hydraulic fluid port department all be connected with pressure sensor, the low pressure hydraulic fluid port still be connected with the flowmeter, flowmeter and pressure sensor all link to each other with the oscilloscope electrical property.
Preferably, the upper end of the test valve block is connected with the test electromagnetic valve in a riveting and pressing mode.
Preferably, the pressure source is a hydraulic press.
Preferably, the load member is a brake caliper.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the testing principle is simple, the testing is convenient, and a relation curve between the flow and the pressure difference generated by the flow of the low pressure port of the electromagnetic valve along with the pressure change of the high pressure port can be quickly obtained;
2. when the same electromagnetic valve structure can be tested, the influence of the difference of the mesh number of the filter screens on the electromagnetic valve on the flow and pressure difference curve of the electromagnetic valve is facilitated, and the mesh number of the filter screens can be selected correctly.
Drawings
FIG. 1 is a schematic diagram of the test of the present invention;
FIG. 2 is a partial cross-sectional view of the test valve block of the present invention;
FIG. 3 is a sectional structure view of the normally closed solenoid valve of the present invention;
fig. 4 is a sectional structure view of the normally open solenoid valve of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1-3, the utility model relates to a car composite brake system solenoid valve pressure differential flow testing arrangement, including test valve block 1 and pressure source 2, test valve block 1 be used for installing the test solenoid valve, test valve block 1 on be provided with low pressure hydraulic fluid port 104 and high pressure hydraulic fluid port 105, pressure source 2 be linked together with high pressure hydraulic fluid port 105 and provide high pressure oil for test valve block 1, the low pressure hydraulic fluid port 104 and the load part 6 of test valve block 1 be linked together, low pressure hydraulic fluid port 104 and high pressure hydraulic fluid port 105 department all be connected with pressure sensor 5, low pressure hydraulic fluid port 104 still be connected with flowmeter 7, flowmeter 7 and pressure sensor 5 all link to each other with the oscilloscope electrical property.
As an embodiment of the utility model, the upper end riveting of test valve block 1 connect the test solenoid valve, pressure source 2 be the hydraulic press, load part 6 be brake caliper.
The essence of the requirement of the automobile brake system for high response speed of the brake system is represented by the response time and the boosting speed of the electromagnetic valve, the essence of the boosting speed is the flow of the electromagnetic valve, and the more brake fluid flows in a short time, the faster the brake response is, so that the response time of the brake system can be reflected laterally by measuring the flow differential pressure curve of the electromagnetic valve by using the device.
The normally closed electromagnetic valve 101 is adopted for carrying out an experimental object in the experiment, and a flow pressure difference curve corresponding to the electromagnetic valve is tested.
The normally closed solenoid valve 101 needs to be riveted in the test valve block 1, the flow path radius of the high-pressure oil port 105 and the low-pressure oil port 104 of the test valve block 1 needs to be consistent with the flow path radius of the system, so that the hydraulic environment of the solenoid valve in a braking system can be simulated, the experimental device can not only measure the flow characteristic curve of the solenoid valve under different pressure differences, but also compare the influence of a filter screen on the flow of the solenoid valve, for example, whether the solenoid valve is provided with an end filter screen 102 and a ring filter screen 103 or not influences the flow of the solenoid valve, and can intuitively reflect the throttling effect of the mesh number of the filter screen installed on the solenoid valve on.
The pressure sensor 5 is respectively connected to the high-pressure oil port 105 and the low-pressure oil port 104 of the electromagnetic valve, the pressure difference change at two ends of the electromagnetic valve is measured in real time, the load of the brake caliper connected to the side of the low-pressure oil port 104 simulates the oil circuit condition of the electromagnetic valve in the system, the measured result truly reflects the flow of the electromagnetic valve in the system, the hydraulic machine is used as the pressure source 2, the pressure of the high-pressure oil port 105 of the electromagnetic valve can be effectively controlled, and the effective pressure value of the high-pressure oil port 105 of the.
Meanwhile, the oscilloscope 4 collects data of the pressure sensor 5 and the flow sensor 7, the consistency of data collection is ensured, and errors caused by zero errors to experimental results are avoided.
Before pressure is supplied, whether a valve core and a valve head of the electromagnetic valve are in a fit state or not and whether a high-pressure oil port and a low-pressure oil port in a valve block are in a non-conduction state or not are ensured, whether data acquisition of the oscilloscope 4 is normal or not is observed, after no error is ensured, stable pressure is output to a high-pressure oil port 105 of a valve port by using a hydraulic machine, and whether pressure data of the high-pressure oil port 105 acquired by the oscilloscope are in a stable state or.
When the pressure at the high-pressure oil port 105 is in a stable state, a coil 106 of the normally closed solenoid valve 101 is electrified, so that the normally closed solenoid valve 101 is in an open state, the high-pressure oil port and the low-pressure oil port are in a conduction state, a flow meter reading curve and a high-pressure and low-pressure oil port pressure data curve in the oscilloscope 4 are observed, and two sets of pressure data and one set of flow data are stored within a specified sampling time so as to facilitate later-stage processing.
As another embodiment of the present invention, as shown in fig. 4, a normally open solenoid valve 107 is adopted as an experimental object, the equipment connection mode is consistent with that of a normally closed solenoid valve 101, and the experimental operation mode is different from that of the normally closed solenoid valve 101. The normally open solenoid valve 107 is riveted in the test valve block 1, and as the low-pressure oil port 104 and the high-pressure oil port 105 in the test valve block 1 belong to a conduction state, the normally closed valve coil should be electrified to ensure that the low-pressure oil port 104 and the high-pressure oil port 105 in the test valve block 1 belong to a non-conduction state.
Under the condition that the pressure at the high-pressure oil port 105 is in a stable state, the power supply for the coil of the normally open electromagnetic valve 107 is cut off, so that the normally open electromagnetic valve 107 is in an open state, namely, the high-pressure oil port and the low-pressure oil port in the test valve block are in a conduction state, a flow meter display curve and a high-pressure and low-pressure oil port pressure data curve in an oscilloscope are observed, and two groups of pressure data and one group of flow data are stored in specified sampling time so as to be convenient for later-stage processing.
While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features of the disclosed embodiments of the present invention can be used in any combination with each other, and the description of such combinations is not exhaustive in the present specification only for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (4)
1. The utility model provides a car composite brake system solenoid valve pressure differential flow testing arrangement, its characterized in that includes test valve block (1) and pressure source (2), test valve block (1) be used for installing the test solenoid valve, test valve block (1) on be provided with low pressure hydraulic fluid port (104) and high-pressure hydraulic fluid port (105), pressure source (2) be linked together with high-pressure hydraulic fluid port (105) and provide high pressure oil for test valve block (1), low pressure hydraulic fluid port (104) and load part (6) of test valve block (1) be linked together, low pressure hydraulic fluid port (104) and high-pressure hydraulic fluid port (105) department all be connected with pressure sensor (5), low pressure hydraulic fluid port (104) still be connected with flowmeter (7), flowmeter (7) and pressure sensor (5) all with oscilloscope electrical property continuous.
2. The differential pressure flow testing device of the electromagnetic valve of the automobile composite braking system according to claim 1, characterized in that: the upper end of the test valve block (1) is connected with a test electromagnetic valve in a riveting and pressing mode.
3. The differential pressure flow testing device of the electromagnetic valve of the automobile composite braking system according to claim 1, characterized in that: the pressure source (2) is a hydraulic machine.
4. The differential pressure flow testing device of the electromagnetic valve of the automobile composite braking system according to claim 1, characterized in that: the load part (6) is a brake caliper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021305072.4U CN212458480U (en) | 2020-07-07 | 2020-07-07 | Pressure difference flow testing device for electromagnetic valve of automobile composite braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021305072.4U CN212458480U (en) | 2020-07-07 | 2020-07-07 | Pressure difference flow testing device for electromagnetic valve of automobile composite braking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212458480U true CN212458480U (en) | 2021-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021305072.4U Active CN212458480U (en) | 2020-07-07 | 2020-07-07 | Pressure difference flow testing device for electromagnetic valve of automobile composite braking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212458480U (en) |
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2020
- 2020-07-07 CN CN202021305072.4U patent/CN212458480U/en active Active
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