CN220622053U - Fuel injector opening stroke tester - Google Patents
Fuel injector opening stroke tester Download PDFInfo
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- CN220622053U CN220622053U CN202321822413.9U CN202321822413U CN220622053U CN 220622053 U CN220622053 U CN 220622053U CN 202321822413 U CN202321822413 U CN 202321822413U CN 220622053 U CN220622053 U CN 220622053U
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- fuel injector
- tester
- voltage regulator
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- air inlet
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- 239000000446 fuel Substances 0.000 title claims abstract description 58
- 230000001105 regulatory effect Effects 0.000 abstract description 17
- 239000013078 crystal Substances 0.000 abstract description 13
- 238000012360 testing method Methods 0.000 abstract description 12
- 230000001276 controlling effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses a fuel injector opening stroke tester, which relates to the technical field of fuel injector testing equipment and comprises a tester body, a gas flowmeter and a voltage regulator, wherein the gas flowmeter and the voltage regulator are arranged on the tester body, the gas flowmeter is used for detecting the gas outlet flow of the fuel injector, a power input end connected with an external power supply is arranged on the tester body, the power input end is connected with the input end of the voltage regulator, and the output end of the voltage regulator is connected with the input end of the fuel injector. According to the utility model, the input voltage of the fuel injector is regulated through the voltage regulator, the change of the voltage value can cause the change of the extension length dimension of the piezoelectric crystal of the piezoelectric fuel injector, compressed air is introduced into the air inlet end of the fuel injector, the air outlet flow of the air outlet end of the fuel injector is measured through the air flowmeter, and whether the extension length of the piezoelectric crystal is within a specified range is judged. The utility model can save the testing time of the fuel injector and reduce the equipment cost.
Description
Technical Field
The utility model relates to the technical field of fuel injector testing equipment, in particular to a fuel injector opening stroke tester.
Background
The common rail electric control fuel injector comprises an electromagnetic common rail fuel injector and a piezoelectric common rail fuel injector. The electromagnetic high-pressure common rail oil injector utilizes an electromagnetic actuator to control oil injection; the piezoelectric common rail fuel injector mainly works by means of the inverse piezoelectric effect that a piezoelectric crystal can stretch to generate displacement under the action of voltage, and converts electric energy into mechanical energy by utilizing the piezoelectric effect, so that fuel injection is realized.
At present, the performance of a piezoelectric electromagnetic valve of a piezoelectric common rail fuel injector is detected, the fuel injector can be detached from a vehicle, then a test is carried out on a test bed, the test period is long, manpower and material resources are seriously wasted, and the equipment investment is huge.
Disclosure of Invention
The utility model aims to provide a fuel injector opening stroke tester, and aims to solve the technical problems of long testing period, serious waste of manpower and material resources and huge equipment investment of fuel injector testing in the prior art.
In order to solve the technical problems, the technical scheme of the utility model is as follows:
the fuel injector opening stroke tester comprises a tester body, a gas flowmeter and a voltage regulator, wherein the gas flowmeter and the voltage regulator are arranged on the tester body, the gas flowmeter is used for detecting the outlet flow of the fuel injector, a power input end connected with an external power supply is arranged on the tester body, the power input end is connected with the input end of the voltage regulator, and the output end of the voltage regulator is connected with the fuel injector.
Preferably, the tester body is provided with a first air inlet, the air outlet end of the fuel injector is connected with the first air inlet through an air outlet pipeline, the air outlet end of the first air inlet is connected with a measuring pipeline, and the gas flowmeter is connected with a measuring pipeline.
Preferably, the tester body is provided with a second air inlet and an air outlet, the first air inlet is communicated with the air outlet, the first air inlet is connected with the compressed gas supply system, and the air outlet is connected with the air inlet end of the fuel injector through an air inlet pipeline.
Preferably, the first air inlet is connected with the air outlet through a compressed air pipeline, and the tester body is provided with a pressure gauge connected on the compressed air pipeline.
Preferably, the tester body is provided with an air pressure reducing valve connected to the compressed air pipeline.
Preferably, the tester body is provided with a voltage display screen for displaying the output voltage value of the voltage regulator.
Preferably, the output of the voltage regulator is connected to the input of the fuel injector by a wiring harness.
Preferably, the tester body is provided with a voltage adjusting knob for controlling the voltage regulator.
After the technical scheme is adopted, the utility model has the beneficial effects that:
1. according to the utility model, the input voltage of the fuel injector can be regulated through the voltage regulator according to the test specification, the change of the voltage value can cause the change of the extension length dimension of the piezoelectric crystal of the piezoelectric fuel injector, the change of the length dimension of the piezoelectric crystal can cause the change of the orifice dimension of the fuel injector, after the voltage regulation is finished, compressed air is introduced into the air inlet end of the fuel injector, the air outlet flow of the air outlet end of the fuel injector is measured through the air flowmeter, the size of the orifice can be judged through the value of the air outlet flow, and whether the extension length of the piezoelectric crystal is within a specified range is judged. The utility model can save the testing time of the fuel injector and reduce the equipment cost.
2. Compressed air is introduced into the second air inlet through the compressed air tank and the compressed air bottle, and the compressed air entering the oil sprayer through the air outlet is regulated to proper pressure through regulating the air pressure regulating valve and observing the numerical value of the pressure gauge.
3. And the output voltage of the tester is regulated through a voltage regulating knob, and the output voltage value is observed in real time through a voltage display screen. So that the air outlet flow rate of the fuel injector under different voltages can be measured, and whether the extension length of the piezoelectric crystal is within a specified range can be judged.
Drawings
FIG. 1 is a schematic diagram of a front view of a fuel injector opening stroke tester according to the present utility model;
FIG. 2 is a schematic rear view of the fuel injector opening stroke tester of the present utility model;
FIG. 3 is a schematic diagram of the operating principle of the fuel injector opening stroke tester of the present utility model.
In the figure, a tester body 1, a power input end 10, a first air inlet 11, a second air inlet 12, an air outlet 13, an air pressure regulating valve 14, a voltage display screen 15, a voltage regulating knob 16, an oil sprayer access socket 17, a pressure gauge 18, a gas flowmeter 2, a flowmeter switch 20, a voltage regulator 3 and an oil sprayer 4.
Detailed Description
The utility model is further elucidated below in conjunction with the accompanying drawings.
The orientations referred to in the specification are all based on the orientations of the fuel injector opening stroke tester in normal operation, are not limited to the orientations in storage and transportation, and only represent relative positional relationships and not absolute positional relationships.
As shown in fig. 1, 2 and 3, the injector opening stroke tester comprises a tester body 1, a gas flowmeter 2 and a voltage regulator 3, wherein the gas flowmeter 2 and the voltage regulator 3 are arranged on the tester body 1, the gas flowmeter 2 is used for detecting the outlet flow of the injector 4, a power input end 10 connected with an external power supply is arranged on the tester body 1, the power input end 10 is connected with the input end of the voltage regulator 3, and the output end of the voltage regulator 3 is connected with the injector 4. Preferably, the gas flowmeter 2 is provided with a flowmeter switch 20, and the flowmeter switch 20 is used for controlling the switch of the gas flowmeter 2.
When the piezoelectric injector is used, according to a test specification, the input voltage of the injector 4 is regulated through the voltage regulator 3, the change of a voltage value can cause the change of the extension length size of the piezoelectric crystal of the piezoelectric injector 4, the change of the length size of the piezoelectric crystal can cause the change of the orifice size of the injector 4, after the voltage regulation is finished, compressed air is introduced into the air inlet end of the injector 4, the air outlet flow of the air outlet end of the injector 4 is measured through the air flowmeter 2, the size of the throttle hole can be judged through the value of the air outlet flow, and whether the extension length of the piezoelectric crystal is within a specified range is judged. The utility model can save the test time of the oil sprayer 4 and reduce the equipment cost.
The output end of the voltage regulator 3 is connected with the input end of the fuel injector 4 through a wire harness. Specifically, the tester body 1 is provided with an oil sprayer access socket 17, the oil sprayer access socket 17 is electrically connected with the voltage regulator 3, one end of a wire harness is connected to the oil sprayer access socket 17, and the other end of the wire harness is connected to the oil sprayer 4.
The tester comprises a tester body 1, a first air inlet 11, an air outlet end of an oil sprayer 4, a measuring pipeline, and a gas flowmeter 2, wherein the air outlet end of the tester body 1 is provided with the first air inlet 11, the air outlet end of the oil sprayer 4 is connected with the first air inlet 11 through an air outlet pipeline, and the air outlet end of the first air inlet 11 is connected with the measuring pipeline.
Further, the tester body 1 is provided with a second air inlet 12 and an air outlet 13, the first air inlet 11 is communicated with the air outlet 13, the first air inlet 11 is connected with a compressed gas supply system, and the air outlet 13 is connected with the air inlet end of the fuel injector 4 through an air inlet pipeline. The compressed gas supply system is a gas cylinder or a gas tank.
Further, the first air inlet 11 is connected with the air outlet 13 through a compressed air pipeline, and the tester body 1 is provided with a pressure gauge 18 connected on the compressed air pipeline.
When the utility model is used, compressed air is introduced into the second air inlet 12 through the compressed air tank or the compressed air bottle, and the compressed air entering the oil sprayer 4 through the air outlet 13 can be regulated to proper pressure by regulating the air pressure regulating valve 14 and observing the numerical value of the pressure gauge 18.
In order to facilitate the regulation of the input voltage of the injector 4, the tester body 1 is provided with an air pressure relief valve 14 connected to the compressed air line. The tester body 1 is provided with a voltage display screen 15 for displaying the output voltage value of the voltage regulator 3. The tester body 1 is provided with a voltage adjusting knob 16 for controlling the voltage regulator 3. In use, the output voltage of the tester is regulated by the voltage regulating knob 16, and the output voltage value is observed in real time by the voltage display screen 15. So that the discharge flow rate of the fuel injector 4 at different voltages can be measured to determine whether the extension length of the piezoelectric crystal is within a prescribed range.
When the fuel injector needs to be tested, the power input end 10 of the tester is connected with an external power supply through a wire harness, and the fuel injector access socket 17 is connected with the input end of the fuel injector 4 through the wire harness. The first air inlet 11 is connected with a gas cylinder, the air outlet 13 is connected with the air inlet end of the oil sprayer 4 through a pipeline, the second air inlet 12 is connected with the air outlet end of the oil sprayer 4 through a pipeline, and the flowmeter switch 20 is opened. The input voltage is then adjusted to a set value by the voltage regulator 3, and the set value is observed by the voltage display 15 to input the set voltage to the injector 4. The change in the input voltage value causes a change in the length dimension of the piezoelectric crystal extension of the piezoelectric injector 4, which causes a change in the orifice size of the injector 4. Compressed air is introduced into the oil sprayer 4 through the first air inlet 11 and the air outlet 13, the value of the pressure gauge 18 is observed through the air pressure regulating valve 14, the compressed air entering the oil sprayer 4 through the air outlet 13 is regulated to proper pressure, and the introduced compressed air flows out of the oil sprayer 4 through the orifice and enters the second air inlet 12. The flow entering the second air inlet 12 is measured by the air flowmeter 2, so that the air outlet flow of the air outlet end of the oil sprayer 4 can be measured, the size of the throttle hole can be judged by the value of the air outlet flow, and whether the extension length of the piezoelectric crystal is within a specified range is judged.
It should be understood that the above description is not intended to limit the utility model to the particular embodiments disclosed, but to limit the utility model to the particular embodiments disclosed, and that the utility model is not limited to the particular embodiments disclosed, but is intended to cover modifications, adaptations, additions and alternatives falling within the spirit and scope of the utility model.
Claims (8)
1. The fuel injector opening stroke tester is characterized by comprising a tester body, a gas flowmeter and a voltage regulator, wherein the gas flowmeter and the voltage regulator are arranged on the tester body, the gas flowmeter is used for detecting the outlet flow of the fuel injector, a power input end connected with an external power supply is arranged on the tester body, the power input end is connected with the input end of the voltage regulator, and the output end of the voltage regulator is connected with the fuel injector.
2. The fuel injector opening stroke tester according to claim 1, wherein the tester body is provided with a first air inlet, the air outlet end of the fuel injector is connected with the first air inlet through an air outlet pipeline, the air outlet end of the first air inlet is connected with a measuring pipeline, and the gas flowmeter is connected with the measuring pipeline.
3. The fuel injector opening stroke tester according to claim 2, wherein the tester body is provided with a second air inlet and an air outlet, the first air inlet is communicated with the air outlet, the first air inlet is connected with the compressed gas supply system, and the air outlet is connected with the air inlet end of the fuel injector through an air inlet pipeline.
4. A fuel injector opening stroke tester as recited in claim 3 wherein the first air inlet is connected to the air outlet via a compressed air line, and wherein the tester body is provided with a pressure gauge connected to the compressed air line.
5. The fuel injector opening stroke tester according to claim 4, wherein the tester body is provided with an air pressure reducing valve connected to the compressed air line.
6. The fuel injector opening stroke tester according to claim 1, wherein a voltage display screen for displaying the output voltage value of the voltage regulator is provided on the tester body.
7. The fuel injector opening stroke tester of claim 1, wherein the output of the voltage regulator is connected to the input of the fuel injector via a wiring harness.
8. The fuel injector opening stroke tester according to claim 1, wherein a voltage adjustment knob for controlling the voltage regulator is provided on the tester body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321822413.9U CN220622053U (en) | 2023-07-12 | 2023-07-12 | Fuel injector opening stroke tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321822413.9U CN220622053U (en) | 2023-07-12 | 2023-07-12 | Fuel injector opening stroke tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220622053U true CN220622053U (en) | 2024-03-19 |
Family
ID=90228290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321822413.9U Active CN220622053U (en) | 2023-07-12 | 2023-07-12 | Fuel injector opening stroke tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220622053U (en) |
-
2023
- 2023-07-12 CN CN202321822413.9U patent/CN220622053U/en active Active
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