Air suspension performance test system

Abstract

An air suspension performance test system comprises an air compressor, a high-pressure loop, a low-pressure loop and a detection loop. The high-pressure loop communicates with the air compressor and is suitable for supplying high-pressure gas to the air compressor; the low-pressure loop is communicated with the air compressor and is suitable for supplying low-pressure gas to the air compressor; the detection loop is communicated with the air compressor, and the performance parameters of the detection loop are suitable for representing the performance parameters of the air suspension. The air suspension performance test system can systematically test the related performance of the air suspension.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressors, in particular to an air suspension performance testing system. Background Art

[0002] Air suspension includes an air compressor. Air suspension needs to work in different environments and needs to be tested for relevant performance parameters such as flow, pressure, leakage, etc. under different working conditions. Currently, there is no suitable air suspension performance test system that can systematically test the relevant performance of air compressors. Utility Model Content

[0003] The utility model aims to provide an air suspension performance test system to solve the problem that there is no suitable air suspension performance test system capable of systematically testing the relevant performance of an air compressor.

[0004] In order to achieve the purpose of the utility model, the utility model provides the following technical solutions:

[0005] The utility model provides an air suspension performance testing system, comprising:

[0006] Air compressor;

[0007] a high-pressure circuit, connected to the air compressor and suitable for supplying high-pressure gas to the air compressor;

[0008] a low-pressure circuit, connected to the air compressor and adapted to supply low-pressure gas to the air compressor;

[0009] A detection circuit is communicated with the air compressor, and performance parameters of the detection circuit are suitable for characterizing performance parameters of the air suspension.

[0010] In one embodiment, the detection circuit includes a reversing component, the reversing component includes a first sub-path and a second sub-path connected in parallel, the detection circuit also includes a pressure tank to be tested, the reversing component is arranged between the pressure tank to be tested and the air compressor, the pressure tank to be tested and the first sub-path and the second sub-path are connected, and the flow direction of the gas in the first sub-path and the second sub-path is opposite.

[0011] In one embodiment, the first sub-path includes a first one-way valve and a first flow sensor, and the first flow sensor is disposed between the air compressor and the first one-way valve;

[0012] The second sub-path includes a second one-way valve and a second flow sensor, and the second flow sensor is arranged between the air compressor and the second one-way valve.

[0013] In one embodiment, the detection circuit further includes an air pressure sensor, and the air pressure sensor is arranged between the pressure tank to be tested and the reversing component.

[0014] In one embodiment, the high-pressure circuit includes a booster pump and an air pressure tank that are connected, the booster pump is suitable for being connected to a gas source and delivering high-pressure gas to the air pressure tank, and the air pressure tank is suitable for storing high-pressure gas.

[0015] In one embodiment, the high-pressure circuit further includes a first proportional valve, which is disposed between the air pressure tank and the air compressor, and is suitable for adjusting the flow rate of the high-pressure gas.

[0016] In one embodiment, the high-pressure circuit further includes a third flow sensor, and the third flow sensor is disposed between the first proportional valve and the air compressor.

[0017] In one embodiment, the low-pressure circuit includes a vacuum pump and a vacuum tank that are connected, and the vacuum pump is suitable for extracting gas in the vacuum tank to form low-pressure gas.

[0018] In one embodiment, the low-pressure circuit further includes a second proportional valve, which is disposed between the vacuum pump and the vacuum tank, and is suitable for adjusting the flow rate of the low-pressure gas.

[0019] In one embodiment, the air suspension performance test system further includes a test bench and an industrial computer, the air compressor and the industrial computer are arranged on the test bench, and the industrial computer is suitable for regulating relevant parameters of the high-pressure circuit and the gas transported by the high-pressure circuit.

[0020] The air suspension performance testing system of the utility model transmits high-pressure gas and low-pressure gas to the air compressor of the air suspension by setting a high-pressure circuit and a low-pressure circuit, and simulates the working conditions of the air compressor in different environments by adjusting the gas flow and gas pressure of the high-pressure gas and the low-pressure gas. At the same time, the air suspension performance testing system of the utility model is also provided with a detection circuit connected to the air compressor. The performance parameters of the detection circuit can directly or indirectly characterize the performance parameters of the air suspension, such as flow, pressure, leakage and other performance parameters, thereby systematically completing the test of the relevant performance of the air compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 is a partial schematic diagram of an air suspension performance testing system according to an embodiment;

[0023] Figure 2 is a schematic diagram of an air suspension performance testing system according to an embodiment.

[0024] Description of reference numerals:

[0025] 100-air suspension performance test system, 10-air compressor, 11-air compressor built-in valve, 21-pressure tank to be tested, 221-first one-way valve, 222-first flow sensor, 231-second one-way valve, 232-second flow sensor, 24-air pressure sensor, 31-air source, 32-boosting pump, 321-pressure reducing valve, 33-air pressure tank, 34-filter pressure reducing valve, 35-first proportional valve, 36-third flow sensor, 371-first solenoid valve, 372-third one-way valve, 373-second solenoid valve, 374-third solenoid valve, 41-vacuum pump, 42-vacuum tank, 43-vacuum sensor, 44-second proportional valve, 441-filter, 45-fourth one-way valve, 51-fourth solenoid valve, 52-muffler, 60-test bench, 70-industrial computer, 80-power supply, 90-display. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0028] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meaning as those commonly understood by technicians in the technical field of this utility model. The terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used in this utility model includes any and all combinations of one or more related listed items.

[0029] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0030] For reference Figure 1 The utility model provides an air suspension performance test system 100, comprising an air compressor 10, a high pressure circuit, a low pressure circuit and a detection circuit. The high pressure circuit is connected to the air compressor 10 and is suitable for supplying high pressure gas to the air compressor 10. The low pressure circuit is connected to the air compressor 10 and is suitable for supplying low pressure gas to the air compressor 10. The detection circuit is connected to the air compressor 10, and the performance parameters of the detection circuit are suitable for characterizing the performance parameters of the air suspension.

[0031] The air compressor 10 may be a positive displacement compressor, a dynamic (speed or turbine) compressor, a thermal compressor, an air-cooled air compressor, a water-cooled air compressor, etc., without limitation.

[0032] Supplying high-pressure gas to the air compressor 10 can simulate the working condition of the air compressor 10 under a high-pressure environment.

[0033] Supplying low-pressure gas to the air compressor 10 can simulate the working condition of the air compressor 10 in a low-pressure environment. For example, when the air compressor 10 is used in a vehicle, the vehicle travels to a high-cold area, and the corresponding air compressor 10 is in a low-pressure environment.

[0034] The performance parameters of the detection circuit may include parameters such as gas flow, gas pressure, gas leakage, etc., which directly or indirectly characterize the relevant performance of the air suspension. Specifically, the air suspension includes an air compressor 10 and a pressure tank 21 to be tested, and the air compressor 10 inflates the pressure tank 21 to be tested.

[0035] For reference Figure 1Optionally, the air suspension performance test system 100 also includes an environmental chamber and an air compressor built-in valve 11. The air compressor 10 is accommodated in the environmental chamber. The air compressor built-in valve 11 is connected to the air compressor 10 and is suitable for the air compressor 10 to discharge gas into the environmental chamber. The air compressor built-in valve 11 can be a built-in constant pressure valve, a built-in safety valve, a built-in piston hydraulic stop valve, a built-in duckbill valve, etc., without limitation. The environmental chamber can adjust the working environment temperature of the air compressor 10. Specifically, the working environment temperature can be 5°C, 80°C, -40°C, etc., without limitation.

[0036] The air suspension performance testing system 100 of the utility model transmits high-pressure gas and low-pressure gas to the air compressor 10 by setting a high-pressure circuit and a low-pressure circuit, and simulates the working conditions of the air compressor 10 in different environments by adjusting the gas flow and gas pressure of the high-pressure gas and the low-pressure gas. At the same time, the air suspension performance testing system 100 of the utility model is also provided with a detection circuit connected to the air compressor 10. The performance parameters of the detection circuit can directly or indirectly characterize the performance parameters of the air compressor 10, such as flow, pressure, leakage and other performance parameters, thereby systematically completing the test of the relevant performance of the air suspension.

[0037] For reference Figure 1 In one embodiment, the detection circuit includes a reversing component, the reversing component includes a first sub-path and a second sub-path connected in parallel, the detection circuit also includes a pressure tank 21 to be tested, the reversing component is arranged between the pressure tank 21 to be tested and the air compressor 10, the pressure tank 21 to be tested and the first sub-path and the second sub-path are both connected, and the flow directions of the gases in the first sub-path and the second sub-path are opposite.

[0038] The pressure tank 21 to be tested can be a steel pressure tank, a fiberglass pressure tank, a plastic pressure tank, a ceramic pressure tank, etc., without limitation.

[0039] The volume of the pressure tank 21 to be tested may be 3.5L-4L. Specifically, the volume of the pressure tank 21 to be tested may be 3.5L, 3.7L, 3.8L, 4L, etc., without limitation.

[0040] The gas in the first sub-path flows from the air compressor 10 to the pressure tank 21 to be tested, and the first sub-path is a charging branch; the gas in the second sub-path flows out of the pressure tank 21 to be tested, and the second sub-path is an exhaust branch.

[0041] The air compressor 10 is suitable for delivering gas to the pressure tank to be tested 21. The pressure tank to be tested 21 is also arranged in the environmental chamber, which is suitable for making the pressure tank to be tested 21 and the air compressor 10 be at the same working environment temperature.

[0042] The first sub-path and the second sub-path are arranged in parallel, so that the pressure tank 21 to be tested has a parallel inflation branch and an exhaust branch.

[0043] For reference Figure 1 In one embodiment, the first sub-path includes a first one-way valve 221 and a first flow sensor 222, and the first flow sensor 222 is disposed between the air compressor 10 and the first one-way valve 221;

[0044] The second sub-path includes a second one-way valve 231 and a second flow sensor 232 . The second flow sensor 232 is disposed between the air compressor 10 and the second one-way valve 231 .

[0045] The first flow sensor 222 and the second flow sensor 232 can be a differential pressure flow sensor, an ultrasonic flow sensor, a magnetic induction intensity flow sensor, a volumetric flow sensor, an impeller flow sensor, etc., without limitation.

[0046] The corresponding one-way valve and flow sensor are arranged in the sub-path, so as to accurately detect the gas flow in the corresponding sub-path.

[0047] For reference Figure 1 In one embodiment, the detection circuit further includes an air pressure sensor 24, and the air pressure sensor 24 is arranged between the pressure tank 21 to be tested and the first sub-path and the second sub-path.

[0048] Specifically, the air pressure sensor 24 may be a piezoelectric sensor. The air pressure sensor 24 is connected to the pressure tank 21 to be tested, and is suitable for detecting the gas pressure of the pressure tank 21 to be tested.

[0049] For reference Figure 1 In one embodiment, the high-pressure circuit includes a booster pump 32 and an air pressure tank 33 connected to each other. The booster pump 32 is suitable for connecting to the gas source 31 and delivering high-pressure gas to the air pressure tank 33. The air pressure tank 33 is suitable for storing high-pressure gas.

[0050] Optionally, the gas source 31 may be atmospheric air.

[0051] For reference Figure 1 Optionally, the high-pressure circuit also includes a filter pressure reducing valve 34, which is arranged between the gas source 31 and the booster pump 32. The filter pressure reducing valve 34 is suitable for stabilizing the pressure of the gas transported by the gas source 31, and filtering impurities when the gas passes through, so as to ensure the purity of the gas provided by the gas source 31 and reduce the failure rate. The filter pressure reducing valve 34 may include a filter element, a pressure reducing valve 321 and a pressure regulating valve. The filter element is responsible for filtering particulate matter in the gas provided by the gas source 31 through a filter screen or a filter medium to prevent particulate matter from entering the booster pump 32. The pressure reducing valve 321 is suitable for reducing the pressure of the air to the required working pressure. The pressure regulator is suitable for adjusting the output pressure and displaying the current pressure value through a pressure gauge.

[0052] The air pressure tank 33 may be a 2MPa air pressure tank 33, that is, the working pressure of the air pressure tank 33 may reach 2MPa. The air pressure tank 33 may be arranged in the environmental chamber.

[0053] The booster pump 32 can be a biogas booster pump 32, a gas-liquid booster pump 32, an air booster pump 32, etc., without limitation. Optionally, the high-pressure circuit further includes a pressure reducing valve 321, which is integrated on the booster pump 32 and is suitable for adjusting the gas pressure in the booster pump 32 to improve the safety of the high-pressure circuit.

[0054] The utility model is provided with a high-pressure circuit connected with the air compressor 10 to supply high-pressure gas to the air compressor 10 .

[0055] For reference Figure 1 In one embodiment, the high-pressure circuit further includes a first proportional valve 35, which is disposed between the air pressure tank 33 and the air compressor 10, and is suitable for adjusting the flow rate of the high-pressure gas.

[0056] Specifically, the first proportional valve 35 may be a 3 MPa electric proportional valve, that is, the maximum working pressure of the first proportional valve 35 may be 3 MPa.

[0057] The first proportional valve 35 drives the valve core to move inside the first proportional valve 35 according to the current signal, thereby changing the opening degree of the channel inside the first proportional valve 35, and further controlling the flow rate of the output high-pressure gas.

[0058] For reference Figure 1 In one implementation, the high pressure circuit further includes a third flow sensor 36 , which is disposed between the first proportional valve 35 and the air compressor 10 .

[0059] The third flow sensor 36 can accurately detect the flow rate of the high-pressure gas output from the first proportional valve 35 to the air compressor 10 .

[0060] For reference Figure 1 In one embodiment, the high-pressure circuit further includes a valve assembly, which includes a first solenoid valve 371, a third one-way valve 372, a second solenoid valve 373 and a third solenoid valve 374. The first solenoid valve 371 is disposed between the third flow sensor 36 and the first proportional valve 35. The second solenoid valve 373 is connected to the third solenoid valve 374 and the detection circuit, the third solenoid valve 374 is connected to the air compressor 10, the second solenoid valve 373 and the detection circuit, and the third one-way valve 372 is disposed between the third flow sensor 36 and the second solenoid valve 373.

[0061] Specifically, the gas flow path of the high-pressure circuit is: gas source 31-filter pressure reducing valve 34-boosting pump 32-air pressure tank 33-first proportional valve 35-first solenoid valve 371-third flow sensor 36-third one-way valve 372-second solenoid valve 373-detection circuit / third solenoid valve 374.

[0062] For reference Figure 1 In one embodiment, the low-pressure circuit includes a vacuum pump 41 and a vacuum tank 42 that are connected to each other, and the vacuum pump 41 is suitable for extracting gas in the vacuum tank 42 to form low-pressure gas.

[0063] The vacuum pump 41 may be a gas capture pump, a gas transmission pump, a dry screw vacuum pump 41, a water ring pump, a reciprocating pump, a sliding valve pump, a rotary vane pump, a Roots pump, a diffusion pump, etc., without limitation.

[0064] Specifically, the vacuum tank 42 may be a 5L vacuum tank 42. The vacuum pump 41 extracts gas in the vacuum tank 42 to form a low-pressure state.

[0065] Optionally, the low-pressure circuit further includes a vacuum sensor 43 , which is connected to the vacuum tank 42 , and is suitable for detecting a negative pressure value in the vacuum tank 42 .

[0066] Supplying low-pressure gas to the air compressor 10 can simulate the working condition of the air compressor 10 in a low-pressure environment. For example, when the air compressor 10 is used in a vehicle, the vehicle travels to a high-cold area, and the corresponding air compressor 10 is in a low-pressure environment.

[0067] For reference Figure 1 In one embodiment, the low-pressure circuit further includes a second proportional valve 44, which is disposed between the vacuum pump 41 and the vacuum tank 42, and is suitable for adjusting the flow rate of the low-pressure gas.

[0068] Optionally, the low-pressure circuit further includes a filter 441 , which is connected to the second proportional valve 44 . The filter 441 is suitable for providing a filter screen or a filter medium to filter particulate matter in the low-pressure gas provided by the vacuum pump 41 to prevent the particulate matter from entering the vacuum tank 42 .

[0069] The second proportional valve 44 can be a vacuum proportional pressure reducing valve 321. Specifically, the vacuum proportional pressure reducing valve 321 can be a mechanical vacuum pressure reducing valve 321, an electronic vacuum pressure reducing valve 321, a liquid level vacuum pressure reducing valve 321, etc. The second proportional valve 44 is suitable for adjusting the negative pressure vacuum degree of the air inlet of the air compressor 10.

[0070] Optionally, the low-pressure circuit further includes a fourth one-way valve 45 , which is disposed between the second proportional valve 44 and the vacuum pump 41 , so that only the vacuum pump 41 exists in the low-pressure circuit to extract gas from the vacuum tank 42 .

[0071] Specifically, the gas flow path of the low-pressure circuit is: vacuum tank 42 - second proportional valve 44 - fourth one-way valve 45 - vacuum pump 41 .

[0072] The vacuum tank 42 is connected to the air compressor 10 . After the vacuum pump 41 forms low-pressure gas in the vacuum tank 42 , the vacuum tank 42 supplies the low-pressure gas to the air compressor 10 .

[0073] For reference Figure 1 In one embodiment, the air suspension performance test system 100 also includes an auxiliary circuit, which includes a fourth solenoid valve 51 and a muffler 52 that are connected to each other. The fourth solenoid valve 51 is connected to the test circuit, the high-pressure circuit and the low-pressure circuit. The muffler 52 is suitable for reducing the noise generated when each circuit is working.

[0074] For reference Figure 2 In one embodiment, the air suspension performance test system 100 further includes a test bench 60 and an industrial computer 70. The air compressor 10 and the industrial computer 70 are arranged on the test bench 60. The industrial computer 70 is suitable for regulating relevant parameters of the high-pressure circuit and the gas transported by the high-pressure circuit.

[0075] The air suspension performance test system 100 also includes a power supply 80, which is suitable for supplying power to the power supply end of the air compressor 10. Specifically, the power supply voltage may be 12.8V-13.2V. Optionally, the power supply voltage is 12.8V, 13V, 13.2V, etc., without limitation.

[0076] The bench 60 is suitable for supporting and fixing various devices in the air suspension performance testing system 100 to facilitate various subsequent tests.

[0077] The stand 60 can be formed by a composite of high-strength plastic, metal materials, etc., such as a composite of glass fiber, steel, aluminum alloy, etc.

[0078] The industrial computer 70 is also electrically connected to the test circuit, and is suitable for receiving the performance parameters of the test circuit and performing analysis and calculation to obtain relevant performance parameters of the air compressor 10 .

[0079] The industrial computer 70 can be an IPC (industrial computer with PC bus), a PLC (programmable control system), a DCS (distributed control system), a FCS (field bus system), a CNC (numerical control system), etc., without limitation.

[0080] Optionally, the air compressor 10 and the pressure tank 21 to be tested can be placed in an environmental chamber or on a bench 60. After assembly, the air suspension performance test system 100 uses a booster pump 32 to perform a pressurization test and a vacuum pump 41 to perform a vacuum test; after the pressure test is completed, relevant performance tests are performed.

[0081] Optionally, the air suspension performance testing system 100 further includes a display 90, and the display 90 is suitable for displaying relevant performance parameters during the test process.

[0082] Specifically, the air suspension performance testing system 100 of the utility model can test the performance of the air compressor 10, such as the inflation time, sealing performance, leakage performance, delivery pressure relief characteristics, and durability.

[0083] The air suspension performance test system 100 of the utility model directly enables the air compressor 10 to supply air to the pressure tank 21 to be tested under atmospheric pressure to perform a inflation time measurement test of the air compressor 10, and the specific process is: close the fourth solenoid valve 51; open the third solenoid valve 374; adjust the second proportional valve 44 to the negative pressure vacuum degree at the air inlet of the air compressor 10 to 0; start the air compressor 10; collect the relevant parameters measured by the air pressure sensor 24, the first flow sensor 222 and the second flow sensor 232 in the test loop; open the built-in valve 11 of the air compressor to release air; the industrial computer 70 analyzes the data to obtain the inflation time measurement result of the air compressor 10.

[0084] The air suspension performance test system 100 of the utility model tests the sealing performance of the pressure tank 21 to be tested and the air compressor 10 in a closed loop, and the specific process is: close the fourth solenoid valve 51; open the first solenoid valve 371, the second solenoid valve 373 and the third solenoid valve 374; start the boost pump 32; adjust the first proportional valve 35 to make the gas pressure output from the high-pressure circuit be between 10 bar and 18 bar; collect the relevant parameters measured by the air pressure sensor 24, the first flow sensor 222 and the second flow sensor 232 in the test loop; open the built-in valve 11 of the air compressor to release air; the industrial computer 70 analyzes the data to obtain the sealing performance result of the air compressor 10.

[0085] The air suspension performance testing system 100 of the utility model tests the leakage performance of the air compressor 10 and the pressure tank 21 to be tested by inflating the air in the air compressor 10 and maintaining it for a period of time, and the specific process is: close the third solenoid valve 374 and the fourth solenoid valve 51; open the air compressor 10 until the gas pressure in the pressure tank 21 to be tested is 18Bar; maintain the gas pressure in the pressure tank 21 to be tested for 10 minutes; collect the relevant parameters measured by the air pressure sensor 24, the first flow sensor 222 and the second flow sensor 232 in the test loop; open the built-in valve 11 of the air compressor to deflate; the industrial computer 70 analyzes the data to obtain the leakage performance results of the air compressor 10 and the pressure tank 21 to be tested.

[0086] The air suspension performance testing system 100 of the utility model tests the leakage performance of the air compressor 10 and the pressure tank 21 to be tested by inflating the air in the air compressor 10 and maintaining it for a period of time, and the specific process is: close the third solenoid valve 374 and the fourth solenoid valve 51; open the air compressor 10 until the gas pressure in the pressure tank 21 to be tested is 18Bar; maintain the gas pressure in the pressure tank 21 to be tested for 10 minutes; collect the relevant parameters measured by the air pressure sensor 24, the first flow sensor 222 and the second flow sensor 232 in the test loop; open the built-in valve 11 of the air compressor to deflate; the industrial computer 70 analyzes the data to obtain the leakage performance results of the air compressor 10 and the pressure tank 21 to be tested.

[0087] The air suspension performance test system 100 of the utility model tests the delivery pressure relief characteristics of the air compressor 10 by testing the air compressor 10's ability to inflate the pressure tank 21 to be tested under atmospheric pressure or low pressure. The specific process is: close the fourth solenoid valve 51; open the third solenoid valve 374; adjust the second proportional valve 44 to the negative pressure vacuum degree at the air inlet of the air compressor 10 to 0 or -0.45 bar; open the air compressor 10 to the maximum air pressure of the gas pressure in the pressure tank 21 to be tested; collect the relevant parameters measured by the air pressure sensor 24, the first flow sensor 222 and the second flow sensor 232 in the test loop; open the built-in valve 11 of the air compressor to release air; the industrial computer 70 analyzes the data to obtain the results of the delivery pressure relief characteristics of the air compressor 10 and the pressure tank 21 to be tested. Specifically, the relevant parameters of the delivery pressure relief characteristics include the gas pressure and flow curve of the filling and discharging at atmospheric pressure, i.e., standard air pressure, and the gas pressure and flow curve of the filling and discharging at low air pressure.

[0088] The air suspension performance test system 100 of the utility model tests the durability of the air compressor 10 by changing the inflation effect of the air compressor 10 on the pressure tank 21 to be tested and performing multiple cycles. The specific process is: close the second solenoid valve 373 and the fourth solenoid valve 51; open the third solenoid valve 374; start the air compressor 10 until the gas pressure of the pressure tank 21 to be tested is 5bar, start the air compressor 10 until the gas pressure of the pressure tank 21 to be tested is 10bar, open the built-in valve 11 of the air compressor to make the gas pressure of the pressure tank 21 to be tested reach 5bar, the above operation is the first cycle working condition; execute 5 first cycle working conditions; start the air compressor 10 until the gas pressure of the pressure tank 21 to be tested is 13bar, open the built-in valve 11 of the air compressor to make the gas pressure of the pressure tank 21 to be tested reach 13bar, open the built-in valve 11 of the air compressor to make the gas pressure of the pressure tank 2 1 to 10bar; start the air compressor 10 to make the gas pressure of the pressure tank 21 to be tested 19bar, open the built-in valve 11 of the air compressor to make the gas pressure of the pressure tank 21 to be tested 13bar; start the air compressor 10 to make the gas pressure of the pressure tank 21 to be tested 20bar, open the built-in valve 11 of the air compressor to make the gas pressure of the pressure tank 21 to be tested 19bar, start the air compressor 10 to make the gas pressure of the pressure tank 21 to be tested 20bar, open the built-in valve 11 of the air compressor to make the gas pressure of the pressure tank 21 to be tested 5bar; collect the relevant parameters measured by the air pressure sensor 24 in the test loop; open the built-in valve 11 of the air compressor to release air; the industrial computer 70 analyzes the data to obtain the durability results of the air compressor 10 and the pressure tank 21 to be tested.

[0089] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship described in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0090] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. An air suspension performance test system, characterized in that: include: Air compressor; a high-pressure circuit, connected to the air compressor and suitable for supplying high-pressure gas to the air compressor; a low-pressure circuit, connected to the air compressor and adapted to supply low-pressure gas to the air compressor; A detection circuit is connected to the air compressor, and the performance parameters of the detection circuit are suitable for characterizing the performance parameters of the air suspension. The detection circuit includes a reversing component and a pressure tank to be tested. The reversing component is arranged between the pressure tank to be tested and the air compressor. The pressure tank to be tested is connected to the reversing component, and the reversing component is used to inflate or exhaust the pressure tank to be tested.

2. The air suspension performance test system according to claim 1, characterized in that: The reversing assembly comprises a first sub-path and a second sub-path connected in parallel, the pressure tank to be tested is connected to both the first sub-path and the second sub-path, and the flow directions of the gases in the first sub-path and the second sub-path are opposite.

3. The air suspension performance test system according to claim 2, characterized in that: The first sub-path includes a first one-way valve and a first flow sensor, and the first flow sensor is arranged between the air compressor and the first one-way valve; The second sub-path includes a second one-way valve and a second flow sensor, and the second flow sensor is arranged between the air compressor and the second one-way valve.

4. The air suspension performance testing system according to claim 2, characterized in that: The detection circuit also includes an air pressure sensor, which is arranged between the pressure tank to be tested and the reversing component.

5. The air suspension performance testing system according to claim 1, characterized in that: The high-pressure circuit includes a booster pump and an air pressure tank that are connected. The booster pump is suitable for being connected to a gas source and delivering high-pressure gas to the air pressure tank. The air pressure tank is suitable for storing high-pressure gas.

6. The air suspension performance testing system according to claim 5, characterized in that: The high-pressure circuit further includes a first proportional valve, which is disposed between the air pressure tank and the air compressor, and is suitable for adjusting the flow of the high-pressure gas.

7. The air suspension performance testing system according to claim 6, characterized in that: The high-pressure circuit further includes a third flow sensor, and the third flow sensor is arranged between the first proportional valve and the air compressor.

8. The air suspension performance testing system according to claim 1, characterized in that: The low-pressure circuit includes a vacuum pump and a vacuum tank that are connected, and the vacuum pump is suitable for extracting gas in the vacuum tank to form low-pressure gas.

9. The air suspension performance testing system according to claim 8, characterized in that: The low-pressure circuit also includes a second proportional valve, which is arranged between the vacuum pump and the vacuum tank, and is suitable for adjusting the flow of the low-pressure gas.

10. The air suspension performance testing system according to claim 1, characterized in that: The air suspension performance test system also includes a test bench and an industrial computer. The air compressor and the industrial computer are arranged on the test bench. The industrial computer is suitable for regulating relevant parameters of the high-pressure circuit and the gas transported by the high-pressure circuit.

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