CN111795838A - Test system of fuel cell hydrogen injector - Google Patents
Test system of fuel cell hydrogen injector Download PDFInfo
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- CN111795838A CN111795838A CN202010566774.6A CN202010566774A CN111795838A CN 111795838 A CN111795838 A CN 111795838A CN 202010566774 A CN202010566774 A CN 202010566774A CN 111795838 A CN111795838 A CN 111795838A
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- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention discloses a test system of a fuel cell hydrogen injector, which comprises an air supply module, a galvanic pile simulator, an acquisition module and a central control module, wherein the air supply module comprises a pressure reducing valve communicated with an air source and an air inlet electromagnetic valve communicated with the pressure reducing valve, and an air outlet of the air inlet electromagnetic valve can be communicated with an air inlet of a tested injector; the air inlet of the electric pile simulator can be communicated with the air outlet of the tested ejector; the acquisition module comprises a first pressure sensor positioned at an air inlet of the pile simulator and a second pressure sensor positioned at an air outlet of the pile simulator; and the central control module is used for being electrically connected with the air inlet electromagnetic valve, the tested ejector and the acquisition module respectively. The invention is beneficial to avoiding the phenomenon of damaging the galvanic pile during testing.
Description
Technical Field
The invention relates to the technical field of hydrogen fuel cells, in particular to a test system of a hydrogen injector of a fuel cell.
Background
The fuel cell is a high-efficiency power generation device, has the advantages of high power density, high energy conversion efficiency, quiet working process and the like, and is successfully applied to the field of automobiles. When the fuel cell is operated, hydrogen needs to be introduced into the anode of the fuel cell and oxygen needs to be introduced into the cathode of the fuel cell respectively, and the existing method for introducing hydrogen into the anode of the fuel cell generally controls the pressure and flow of hydrogen input into the fuel cell through an injector.
The existing injectors need parameter calibration and matching debugging before use, and the existing calibration mode is generally to directly place the injectors in the whole fuel cell system for testing. However, the phenomenon that the electric pile is damaged due to the fact that the pressure of the hydrogen output by the ejector is too high exists in the testing mode.
Disclosure of Invention
The invention mainly aims to provide a test system of a fuel cell hydrogen injector, aiming at solving the technical problem that the existing test mode has the phenomenon of damage to an electric pile due to overlarge pressure of hydrogen output by the injector.
In order to solve the technical problem, the invention provides a test system of a fuel cell hydrogen injector, which comprises a gas supply module, a pile simulator, an acquisition module and a central control module, wherein the gas supply module comprises a pressure reducing valve communicated with a gas source and a gas inlet electromagnetic valve communicated with the pressure reducing valve, and a gas outlet of the gas inlet electromagnetic valve can be communicated with a gas inlet of the injector to be tested; the air inlet of the electric pile simulator can be communicated with the air outlet of the tested ejector; the acquisition module comprises a first pressure sensor positioned at an air inlet of the pile simulator and a second pressure sensor positioned at an air outlet of the pile simulator; and the central control module is used for being electrically connected with the air inlet electromagnetic valve, the tested ejector and the acquisition module respectively.
Preferably, the air supply module further comprises an air storage tank and a bottle mouth angle valve, an air inlet of the bottle mouth angle valve is communicated with an air outlet of the air storage tank, and an air outlet of the bottle mouth angle valve is communicated with an air inlet of the pressure reducing valve.
Preferably, the collection module further comprises a gas flowmeter located between the injector to be tested and the pile simulator, and the gas flowmeter is electrically connected with the central control module.
Preferably, the test system still includes the gas emission module, the gas emission module includes first exhaust branch road and second exhaust branch road, first exhaust branch road include with the first air duct of the gas outlet intercommunication of galvanic pile simulator, just second pressure sensor is located on the first air duct, second exhaust branch road include with the gas outlet solenoid valve of the gas outlet intercommunication of galvanic pile simulator and with the first check valve of the gas outlet intercommunication of the gas outlet solenoid valve, just the gas outlet solenoid valve with well accuse module electric connection.
Preferably, the gas discharge module further comprises a first manual ball valve communicated with the gas outlet of the pressure reducing valve, and the gas outlet of the first manual ball valve is communicated with the gas outlet of the first one-way valve.
Preferably, the gas supply module further comprises a second manual ball valve located between the pressure reducing valve and the electromagnetic valve, the gas discharge module further comprises a safety valve communicated with a gas inlet of the gas inlet electromagnetic valve, a gas outlet of the safety valve is communicated with a gas outlet of the first one-way valve, a third pressure sensor is arranged at a gas inlet of the injector to be tested, and the third pressure sensor is electrically connected with the central control module.
Preferably, the gas emission module further comprises a second gas guide pipe communicated with the safety pressure relief port of the injector to be tested, and a gas outlet of the second gas guide pipe is communicated with a gas outlet of the first one-way valve.
Preferably, the air supply module further comprises a second one-way valve located between the air inlet electromagnetic valve and the tested ejector, an air inlet of the second one-way valve is communicated with an air outlet of the air inlet electromagnetic valve, an air outlet of the second one-way valve is communicated with an air inlet of the tested ejector, and an air outlet of the first air guide pipe is communicated with an air outlet of the second one-way valve.
Preferably, the central control module comprises a controller and an intelligent terminal, wherein the controller is respectively electrically connected with the air inlet electromagnetic valve, the tested ejector and the acquisition module, and the intelligent terminal is in communication connection with the controller.
Preferably, a fourth pressure sensor is arranged at an air outlet of the ejector to be tested, and the fourth pressure sensor is electrically connected with the central control module.
According to the test system of the fuel cell hydrogen ejector provided by the embodiment of the invention, the gas supply module for supplying gas to the tested ejector and the pile simulator capable of simulating the real operation of the fuel cell are arranged, and the gas pressure value at the gas inlet and the gas outlet of the pile simulator is collected by the collection module, so that the central control module can conveniently detect the performance of the tested ejector, the tested ejector can be calibrated and debugged according to the collected data, and the phenomenon that the pile is damaged during testing can be avoided.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a test system for a fuel cell hydrogen injector according to the present invention;
FIG. 2 is a schematic diagram of another embodiment of a test system for a fuel cell hydrogen injector according to the present invention;
fig. 3 is a schematic structural diagram of the central control module shown in fig. 2.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the present invention and should not be construed as limiting the present invention, and all other embodiments that can be obtained by one skilled in the art based on the embodiments of the present invention without inventive efforts shall fall within the scope of protection of the present invention.
The invention provides a test system of a fuel cell hydrogen injector, as shown in fig. 1 and fig. 2, the test system comprises a gas supply module 100, a stack simulator 200, an acquisition module 300 and a central control module 400, wherein the gas supply module 100 comprises a pressure reducing valve 110 for communicating with a gas source and a gas inlet electromagnetic valve 120 for communicating with the pressure reducing valve 110, and a gas outlet of the gas inlet electromagnetic valve 120 can be communicated with a gas inlet of a tested injector 500; the air inlet of the stack simulator 200 can be communicated with the air outlet of the tested ejector 500; the collection module 300 includes a first pressure sensor 310 at an inlet of the stack simulator 200 and a second pressure sensor 320 at an outlet of the stack simulator 200; the central control module 400 is configured to be electrically connected to the intake solenoid valve 120, the injector 500 to be tested, and the acquisition module 300, respectively.
In this embodiment, the gas supply module 100 includes a pressure reducing valve 110 and a gas inlet solenoid valve 120, wherein a gas inlet of the pressure reducing valve 110 is used for communicating with a gas source, the gas source may be a common gas source or an independent gas source, and preferably, the pressure reducing valve 110 has a function of displaying a gas pressure value, so that a gas with a rated gas pressure is conveniently input into the injector 500 to be tested through the pressure reducing valve 110, meanwhile, a gas inlet of the gas inlet solenoid valve 120 is communicated with a gas outlet of the pressure reducing valve 110, and a gas outlet of the gas inlet solenoid valve 120 is communicated with a gas. The air inlet of the electric pile simulator 200 is communicated with the air outlet of the tested ejector 500, so that the hydrogen amount required by the actual electric pile in the loading and unloading process can be simulated through the electric pile simulator 200, then the corresponding hydrogen amount is output by utilizing the tested ejector 500, the electric pile simulator 200 is mainly used for simulating the internal environment of the real fuel cell electric pile, an anode gas flow channel close to the real electric pile is arranged in the electric pile simulator, and certain resistance is reduced. The collecting module 300 includes a first pressure sensor 310 and a second pressure sensor 320, wherein the first pressure sensor 310 is located at an air inlet of the stack simulator 200, and the second pressure sensor 320 is located at an air outlet of the stack simulator 200, so as to conveniently detect a pressure value of hydrogen entering the stack simulator 200 and a pressure value of hydrogen discharged from the stack simulator 200, and thus a pressure drop (i.e., a resistance drop) of the stack simulator 200 at a certain flow rate can be calculated to determine the performance of the stack simulator 200. At this time, the pressure value of the hydrogen collected by the first pressure sensor 310 is approximately equal to the pressure value of the hydrogen discharged from the injector 500 under test, so that it can be determined whether the pressure value of the hydrogen output from the injector 500 under test is in a steady state during the loading and unloading processes of the stack simulator 200. The central control module 400 is electrically connected to the air inlet solenoid valve 120, the tested injector 500 and the acquisition module 300 respectively, so that the opening and closing of the air inlet solenoid valve 120 and the power of the tested injector 500 can be controlled conveniently, and the parameters of the tested injector 500 and the acquisition module 300 can be collected conveniently, and the central control module 400 can debug the tested injector 500 conveniently according to the collected data. In this embodiment, the air supply module 100 for supplying air to the injector 500 to be tested and the stack simulator 200 capable of simulating the real operation of the fuel cell are provided, and the collection module 300 collects the air pressure value at the air inlet and the air outlet of the stack simulator 200, so that the central control module 400 can conveniently detect the performance of the injector 500 to be tested, calibrate and debug the injector 500 to be tested according to the collected data, and the phenomenon that the stack is damaged during the test can be avoided.
In a preferred embodiment, as shown in fig. 2, the gas supply module 100 further includes a gas tank 130 and a mouthpiece angle valve 140, and a gas inlet of the mouthpiece angle valve 140 is communicated with a gas outlet of the gas tank 130, and a gas outlet of the mouthpiece angle valve 140 is communicated with a gas inlet of the pressure reducing valve 110, so that gas can be conveniently supplied to the injector 500 to be tested through the gas tank 130, thereby facilitating the testing system to complete the test at any place. At this time, it is preferable that the gas storage tanks 130 and the mouth angle valve 140 are two sets, one of the gas storage tanks 130 is used for storing hydrogen, the other of the gas storage tanks 130 is used for storing nitrogen, and both the gas storage tanks 130 are respectively communicated with the gas inlet of the pressure reducing valve 110 through the mouth angle valve 140, so that it is convenient to first deliver nitrogen to the injector to be tested through the gas storage tank 130 storing nitrogen to complete a primary test (such as gas tightness, etc.), and then deliver hydrogen to the injector to be tested through the gas storage tank 130 storing hydrogen to complete a final test. The use of nitrogen for the primary test is advantageous for reducing the cost of testing the injector 500 under test due to the higher cost of hydrogen.
In a preferred embodiment, as shown in fig. 2, the collecting module 300 further includes a gas flow meter 330 located between the injector 500 to be tested and the stack simulator 200, and the gas flow meter 330 is electrically connected to the central control module 400, so that the central control module 400 can determine the difference between the actual flow rate and the theoretical output flow rate of the gas output by the injector 500 to be tested according to the flow rate data collected by the gas flow meter 330, and the central control module 400 can conveniently debug the parameters of the injector 500 to be tested.
In a preferred embodiment, as shown in FIG. 2, the testing system further includes a gas venting module 600, the gas venting module 600 including a first gas venting branch 610 and a second gas venting branch 620. At this moment, first exhaust branch 610 includes first air duct, and the gas outlet intercommunication of the air inlet of first air duct and galvanic pile simulator 200, the gas outlet of first air duct then be used for direct discharge gas can, certainly can also be that gas outlet at first air duct sets up gas treatment device to avoid the too high dangerous situation that appears of exhaust hydrogen concentration. Meanwhile, the second exhaust branch 620 includes an air outlet solenoid valve 621 and a first check valve 622, and an air inlet of the air outlet solenoid valve 621 is also communicated with an air outlet of the stack simulator 200, and an air inlet of the first check valve 622 is communicated with an air outlet of the air outlet solenoid valve 621. When the injector 500 to be tested is tested, the air outlet electromagnetic valve 621 is opened at intervals, for example, when the current is output at 300A, the air outlet electromagnetic valve 621 is opened for 0.5 second and closed for 20 seconds, and the operation is performed in a cycle; when the output current is at the rated power of 400A, the air outlet electromagnetic valve 621 is opened for 0.5 second, closed for 12 seconds, and circulated. The first check valve 622 mainly prevents the gas backflow phenomenon during the opening process of the outlet solenoid valve 621, at this time, the amount of gas discharged from the first exhaust branch 610 is equal to the amount of hydrogen actually consumed by the fuel cell, and the amount of gas discharged from the second exhaust branch 620 is equal to the amount of exhaust gas from the fuel cell.
In a preferred embodiment, as shown in fig. 2, the gas discharging module 600 further comprises a first manual ball valve 630, and the gas inlet of the first manual ball valve 630 is communicated with the gas outlet of the pressure reducing valve 110, and the gas outlet of the first manual ball valve 630 is communicated with the gas outlet of the first one-way valve 622, so as to share a gas outlet, thereby facilitating the management of the gas. In this embodiment, the first manual ball valve 630 is provided to facilitate pressure relief when the pressure of the air is adjusted by the pressure reducing valve 110.
In a preferred embodiment, as shown in fig. 2, the gas supply module 100 further includes a second manual ball valve 150, and an air inlet of the second manual ball valve 150 is communicated with an air outlet of the pressure reducing valve 110, and an air outlet of the second manual ball valve 150 is communicated with an air inlet of the inlet solenoid valve 120, so as to facilitate the manual closing of the second manual ball valve 150 during the pressure regulating of the pressure reducing valve 110 to prevent the high-pressure gas from damaging the inlet solenoid valve 120. Meanwhile, the gas exhaust module 600 further includes a safety valve 640, and a gas inlet of the safety valve 640 is communicated with a gas inlet of the gas inlet solenoid valve 120, and a gas outlet of the safety valve 640 is communicated with a gas outlet of the first check valve 622, so as to share one gas outlet, thereby facilitating management of gas. At this time, by providing the safety valve 640, when the gas pressure output by the gas supply module 100 is too high, the safety valve 640 will automatically jump to release the pressure, thereby preventing the air inlet solenoid valve 120 from being damaged. Further, in order to facilitate the central control module 400 to close the intake solenoid valve 120 when the pressure of the gas input into the injector 500 to be tested is high, it is preferable that a third pressure sensor 510 is disposed at the air inlet of the injector 500 to be tested, and the third pressure sensor 510 is further electrically connected to the central control module 400, so that the intake solenoid valve 120 is closed by the central control module 400 when the third pressure sensor 510 detects that the air pressure is too high.
In a preferred embodiment, as shown in fig. 2, the gas exhausting module 600 further includes a second gas guiding tube 650, and the gas inlet of the second gas guiding tube 650 is communicated with the safety pressure relief port of the injector 500 to be tested, and the gas outlet of the second gas guiding tube 650 is communicated with the gas outlet of the first one-way valve 622, so as to share one gas outlet, thereby facilitating the management of gas, and facilitating the exhausting of part of the gas inside through the safety pressure relief port when the gas pressure in the injector 500 to be tested is too high. Meanwhile, a temperature sensor 530 is arranged at the air inlet of the injector 500 to be tested, and the temperature sensor 530 is electrically connected with the central control module 400, so that when the data collected by the temperature sensor 530 exceeds a preset value, the central control module 400 is utilized to control the safe pressure relief opening of the injector 500 to be tested to be opened, and the gas in the injector 500 to be tested is discharged.
In a preferred embodiment, as shown in fig. 2, the air supply module 100 further includes a second check valve 160 located between the air inlet solenoid valve 120 and the injector 500 to be tested, and an air inlet of the second check valve 160 is communicated with an air outlet of the air inlet solenoid valve 120, and an air outlet of the second check valve 160 is communicated with an air inlet of the injector 500 to be tested. Simultaneously, the gas outlet of preferred first air duct communicates with the gas outlet of second check valve 160 to conveniently carry out recycle to first air duct exhalant gas.
In a preferred embodiment, as shown in fig. 3, the central control module 400 includes a controller 410 and a smart terminal 420, wherein the controller 410 may be a controller dedicated to testing the injector 500 under test, or may be a fuel cell controller (FCU), and the smart terminal 420 may be a computer or other smart device. At this time, the controller 410 is electrically connected to the intake solenoid valve 120, the injector 500 to be tested, and the acquisition module 300 respectively, so as to facilitate data or signal transmission, the intelligent terminal 420 is in communication connection with the controller 410, specifically, a wired or wireless manner may be adopted, and the manner in which the intelligent terminal 420 controls the injector 500 to be tested through the controller 410 may be that a corresponding program is provided on the intelligent terminal 420, so as to facilitate debugging of parameters of the injector 500 to be tested.
In a preferred embodiment, as shown in fig. 2, in order to more accurately collect the pressure value of the gas output by the injector 500 to be tested, a fourth pressure sensor 520 is disposed at the gas outlet of the injector 500 to be tested, and the fourth pressure sensor 520 is further electrically connected to the central control module 400, so that the central control module 400 can conveniently debug the injector 500 to be tested according to the pressure value collected by the fourth pressure sensor 520.
It should be noted that the test method of the test system in the above preferred embodiment is as follows:
1. the pressure reducing valve 110 is manually adjusted, and then the air inlet solenoid valve 120 is controlled to open through the control interface on the intelligent terminal 420, so that the air reaches the inlet of the tested injector 500 through the air inlet solenoid valve 120, and the inlet temperature sensor 530 and the third pressure sensor 510 of the injector are fed back to the intelligent terminal 420 through the controller 410 in real time. If the gas at the inlet of the injector 500 is over-pressurized or over-heated, the intelligent terminal 420 sends a command to the controller 410, and the controller 410 controls to close the air inlet solenoid valve 120 and simultaneously controls the injector 500 to be tested to automatically release the pressure, thereby protecting the whole injector 500 to be tested. The mode of adjusting the air pressure through the pressure reducing valve 110 is that the first manual ball valve 630 is used for releasing air when the pressure reducing valve 110 adjusts the pressure, so that the pressure can be conveniently adjusted (the air pressure can not be adjusted all the time). The first manual ball valve 630 is closed and no longer opened after the pressure is adjusted by the pressure reducing valve 110, and then the second manual valve 150 is opened to allow gas to reach the inlet of the inlet solenoid valve 120.
2. If the intelligent terminal 420 detects that the gas pressure and temperature at the inlet of the injector 500 to be tested are normal, the test is performed according to a preset program. That is, the flow and pressure of the anode hydrogen during the loading process and the load reducing process of the whole stack are simulated (the current is increased from small to large to the rated current), for example, the flow and pressure of the hydrogen required during the loading process are increased with the increase of the stack current, and the intelligent terminal 420 controls the tested injector 500 via the controller 410 to adjust the flow and pressure of the hydrogen (which is realized by adjusting the opening frequency and the opening size of the nozzle inside the tested injector 500) to follow the increase, so as to meet the demand of the whole fuel by the stack. When the hydrogen flow is increased, the pipeline gas pressure is reduced, and at this time, the control parameters of the tested ejector 500 are adjusted, so that the whole gas supply pressure and flow are stably increased along with the current, and the large fluctuation is avoided. The load reduction process is just opposite, and the measured injector 500 is controlled to enable the pressure and the flow of the hydrogen to stably reduce along with the reduction of the current of the pile without large fluctuation.
3. In the whole testing process, the air outlet electromagnetic valve 621 is opened at intervals to exhaust air, the opening time length is changed along with the change of the loading current, the exhaust period (interval time) of the air outlet electromagnetic valve 621 under low current is longer, and the exhaust period is correspondingly shortened under high current. Specifically, the control strategy is determined by the control strategy during the test of the fuel cell stack.
4. The periodic exhaust through the outlet solenoid valve 621 causes the pressure fluctuation of the gas at the upstream stack and the outlet of the injector 500 to be tested, thereby causing the voltage fluctuation of the stack. At this time, the control parameter of the injector 500 to be tested is adjusted to keep the air supply pressure stable when the air outlet solenoid valve 621 exhausts air.
5. The whole testing process is to simulate the following changes of the pressure and the flow of the hydrogen supply when the fuel cell is loaded and unloaded, and the tested ejector 500 is mainly used for adjusting the stability of the pressure and the flow of the hydrogen supply so as to meet the air supply requirement of the whole fuel cell system or the electric pile.
The above is only a part or preferred embodiment of the present invention, and neither the text nor the drawings should limit the scope of the present invention, and all equivalent structural changes made by the present specification and the contents of the drawings or the related technical fields directly/indirectly using the present specification and the drawings are included in the scope of the present invention.
Claims (10)
1. The test system of the fuel cell hydrogen injector is characterized by comprising an air supply module, a pile simulator, an acquisition module and a central control module, wherein the air supply module comprises a pressure reducing valve communicated with an air source and an air inlet electromagnetic valve communicated with the pressure reducing valve, and an air outlet of the air inlet electromagnetic valve can be communicated with an air inlet of a tested injector; the air inlet of the electric pile simulator can be communicated with the air outlet of the tested ejector; the acquisition module comprises a first pressure sensor positioned at an air inlet of the pile simulator and a second pressure sensor positioned at an air outlet of the pile simulator; and the central control module is used for being electrically connected with the air inlet electromagnetic valve, the tested ejector and the acquisition module respectively.
2. The testing system of claim 1, wherein the gas supply module further comprises a gas storage tank and a mouth angle valve, a gas inlet of the mouth angle valve is communicated with a gas outlet of the gas storage tank, and a gas outlet of the mouth angle valve is communicated with a gas inlet of the pressure reducing valve.
3. The test system of claim 1, wherein the collection module further comprises a gas flow meter between the injector under test and the stack simulator, and the gas flow meter is electrically connected to the central control module.
4. The test system of claim 1, further comprising a gas discharge module, wherein the gas discharge module comprises a first gas discharge branch and a second gas discharge branch, the first gas discharge branch comprises a first gas guide tube communicated with the gas outlet of the stack simulator, the second pressure sensor is located on the first gas guide tube, the second gas discharge branch comprises a gas outlet solenoid valve communicated with the gas outlet of the stack simulator and a first one-way valve communicated with the gas outlet of the gas outlet solenoid valve, and the gas outlet solenoid valve is electrically connected with the central control module.
5. The testing system of claim 4, wherein the gas vent module further comprises a first manual ball valve in communication with a gas outlet of the pressure relief valve, the gas outlet of the first manual ball valve in communication with a gas outlet of the first one-way valve.
6. The testing system of claim 4, wherein the gas supply module further comprises a second manual ball valve located between the pressure reducing valve and the solenoid valve, the gas discharge module further comprises a safety valve communicated with a gas inlet of the gas inlet solenoid, a gas outlet of the safety valve is communicated with a gas outlet of the first one-way valve, a third pressure sensor is arranged at a gas inlet of the injector to be tested, and the third pressure sensor is electrically connected with the central control module.
7. The test system of claim 4, wherein the gas venting module further comprises a second gas duct in communication with the safety pressure relief port of the injector under test, and a gas outlet of the second gas duct is in communication with a gas outlet of the first one-way valve.
8. The testing system of claim 4, wherein the gas supply module further comprises a second one-way valve located between the gas inlet solenoid valve and the injector to be tested, a gas inlet of the second one-way valve is communicated with a gas outlet of the gas inlet solenoid valve, a gas outlet of the second one-way valve is communicated with a gas inlet of the injector to be tested, and a gas outlet of the first gas guide tube is communicated with a gas outlet of the second one-way valve.
9. The test system of claim 1, wherein the central control module comprises a controller and an intelligent terminal, the controller is electrically connected with the air inlet solenoid valve, the injector to be tested and the acquisition module respectively, and the intelligent terminal is in communication connection with the controller.
10. The testing system of claim 1, wherein a fourth pressure sensor is disposed at an air outlet of the injector under test, and the fourth pressure sensor is electrically connected to the central control module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010566774.6A CN111795838A (en) | 2020-06-19 | 2020-06-19 | Test system of fuel cell hydrogen injector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010566774.6A CN111795838A (en) | 2020-06-19 | 2020-06-19 | Test system of fuel cell hydrogen injector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112881024A (en) * | 2021-01-15 | 2021-06-01 | 中汽研汽车检验中心（天津）有限公司 | Hydrogen injector testing device and testing method for hydrogen fuel cell engine |
| CN113506900A (en) * | 2021-06-18 | 2021-10-15 | 广西玉柴机器股份有限公司 | Hydrogen gas exhaust apparatus and control method for vehicle fuel cell system |
-
2020
- 2020-06-19 CN CN202010566774.6A patent/CN111795838A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112881024A (en) * | 2021-01-15 | 2021-06-01 | 中汽研汽车检验中心（天津）有限公司 | Hydrogen injector testing device and testing method for hydrogen fuel cell engine |
| CN113506900A (en) * | 2021-06-18 | 2021-10-15 | 广西玉柴机器股份有限公司 | Hydrogen gas exhaust apparatus and control method for vehicle fuel cell system |
| CN113506900B (en) * | 2021-06-18 | 2022-10-04 | 广西玉柴机器股份有限公司 | Hydrogen gas exhaust control method for vehicle fuel cell system |
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