CN221054039U - Air pressure device suitable for diesel engine fuel injector calibration - Google Patents
Air pressure device suitable for diesel engine fuel injector calibration Download PDFInfo
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- CN221054039U CN221054039U CN202322732013.5U CN202322732013U CN221054039U CN 221054039 U CN221054039 U CN 221054039U CN 202322732013 U CN202322732013 U CN 202322732013U CN 221054039 U CN221054039 U CN 221054039U
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- piston cylinder
- cylinder
- switching valve
- piston
- air compressor
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- 239000000446 fuel Substances 0.000 title abstract description 35
- 238000002347 injection Methods 0.000 claims abstract description 9
- 239000007924 injection Substances 0.000 claims abstract description 9
- 238000011084 recovery Methods 0.000 claims description 6
- 239000002283 diesel fuel Substances 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 10
- 239000003921 oil Substances 0.000 description 43
- 238000000889 atomisation Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000002459 sustained effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
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- Fuel-Injection Apparatus (AREA)
Abstract
The utility model discloses a pneumatic device suitable for calibrating a diesel engine fuel injector, which relates to the technical field of fuel injector testing, and comprises the following components: an air compressor, a piston cylinder and a switching valve. The piston cylinder comprises a cylinder body and a piston rod, and the piston rod is connected with the oil sprayer and is used for controlling the injection pressure of the oil sprayer; the switching valve is arranged between the air compressor and the piston cylinder, is respectively communicated with the air compressor and the piston cylinder, and is used for controlling air supply, pressure maintaining and pressure relief of the piston cylinder. By adopting the setting mode, the low pressure testing efficiency and accuracy of the fuel injector can be avoided.
Description
Technical Field
The application relates to the technical field of fuel injector testing, in particular to a pneumatic device suitable for calibrating a diesel engine fuel injector.
Background
The ignition mode of the diesel engine is compression ignition, the piston runs near the upper dead center, fuel oil is injected into the combustion chamber through the fuel injector hole under high pressure, and the fuel oil is mixed with air through air flow movement and catches fire under the action of high temperature and high pressure. The main function of the fuel injector is to spray the high-pressure diesel oil from the fuel injection pump into a combustion chamber in a mist form, and the diesel oil is mainly combusted in a gaseous mode in the combustion chamber, so that the atomization quality of the diesel oil is particularly important. The atomization after diesel fuel is sprayed reflects whether the performance of the fuel injector is good. The calibration fuel injector can better maintain the working performance of the fuel injector, prolong the service life of the fuel injector, reduce the failure occurrence rate, and improve the economic benefit so as to ensure the on-air rate and the economical efficiency of the ship.
In the combustion process of a diesel engine, the fuel injector is used as a key part in a fuel supply system, the influence of the injection pressure and the atomization effect of fuel is important, and the existing calibration is to calibrate the fuel injector in a manual capping high-pressure oil pump oil supply mode, but the error fluctuation is large, and the data is inaccurate.
Therefore, how to avoid the influence of low pressure testing efficiency and accuracy of the fuel injector is a technical problem that needs to be solved by those skilled in the art.
Disclosure of utility model
The application aims to provide a pneumatic device suitable for calibrating a diesel engine fuel injector, which can avoid the influence of low pressure test efficiency and accuracy of the fuel injector.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
An air pressure device suitable for diesel engine sprayer calibration for fill high pressure into the sprayer, make the oil in the last oil tank through sprayer atomizing blowout to retrieve the oil tank, include:
An air compressor;
the piston cylinder comprises a cylinder body and a piston rod, and the piston rod is connected with the oil sprayer and is used for controlling the injection pressure of the oil sprayer;
The switching valve is arranged between the air compressor and the piston cylinder, is respectively communicated with the air compressor and the cylinder body, and is used for controlling the pressurization, pressure maintaining and pressure relief of the piston cylinder.
Preferably, a filter is arranged between the switching valve and the air compressor, and is used for filtering impurities in the gas.
Preferably, the piston cylinder is a single-acting cylinder.
Preferably, the piston cylinder is a distance cylinder.
Preferably, the switching valve is a three-position reversing valve, when the switching valve is located at a first working position, the rodless cavity of the cylinder body is communicated with the air compressor, the rod cavity of the cylinder body is communicated with the outside to pressurize the piston cylinder, when the switching valve is located at a second working position, the rod cavity of the cylinder body is closed, the rod cavity of the cylinder body is communicated with the outside to pressurize the piston cylinder, and when the switching valve is located at a third working position, the rod cavity of the cylinder body and the rod cavity are both communicated with the outside to depressurize the piston cylinder.
Preferably, the switching valve is a reversing solenoid valve.
Compared with the background art, the air pressure device suitable for calibrating the diesel engine fuel injector is used for filling high pressure into the fuel injector and spraying oil in the upper oil tank to the recovery oil tank through atomization of the fuel injector, and comprises the following components: an air compressor, a piston cylinder and a switching valve. The piston cylinder comprises a cylinder body and a piston rod, and the piston rod is connected with the oil sprayer and is used for controlling the injection pressure of the oil sprayer; the switching valve is arranged between the air compressor and the piston cylinder, is respectively communicated with the air compressor and the piston cylinder, and is used for controlling air supply, pressure maintaining and pressure relief of the piston cylinder.
Specifically, the oil sprayer needs to spray oil in the upper oil tank to the recovery oil tank, but the working of the oil sprayer needs pressure, a piston rod of the piston cylinder is connected with the oil sprayer, the oil sprayer is pressurized through the movement of the piston rod, the piston cylinder is communicated with the air compressor through the switching valve, the switching valve can control the connection of an air inlet pipeline of the air compressor and a rodless cavity of the piston cylinder, the air compressor charges compressed air into the rodless cavity of the piston cylinder body, so that the piston rod extends outwards, the oil sprayer is pressurized at the moment, the air inlet pipeline of the air compressor is closed, the rodless cavity of the piston cylinder body is communicated with outside air, so that the piston cylinder is depressurized, the piston rod is retracted, at the moment, the oil sprayer is depressurized, the air inlet pipeline is closed after the air compressor charges compressed air into the rodless cavity of the piston cylinder body, the rodless cavity is also closed, and the piston rod is kept motionless at the moment; therefore, the extension and retraction of the piston rod of the piston cylinder can be controlled through the air compressor, the extension and retraction length can be controlled, manual pressing in the oil sprayer is not needed, the calibration efficiency and accuracy of the oil sprayer are effectively improved, and the labor intensity of operators is reduced.
In conclusion, the influence of low pressure test efficiency and accuracy of the oil sprayer can be avoided, so that the working performance of the oil sprayer is well maintained, the service life of the oil sprayer is prolonged, the failure occurrence rate is reduced, and the economic benefit is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a pneumatic device according to an embodiment of the present utility model.
Wherein:
100-an oil injector;
200-oil feeding cabinet;
300-recovering the oil tank;
400-air compressor;
500-piston cylinder, 510-cylinder body, 520-piston rod;
600-switching valve;
700-filter.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The present application will be further described in detail below with reference to the drawings and detailed description for the purpose of enabling those skilled in the art to better understand the aspects of the present application.
In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "left" and "right" and the like are based on the directions or positional relationships shown in the drawings, only for convenience of description and simplification of the description, and are not indicative or implying that the indicated positions or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limitations of the present utility model.
Referring to fig. 1, an embodiment of the present application provides a pneumatic device suitable for calibrating a diesel injector, for filling high pressure into the injector 100, and atomizing and spraying oil in an upper oil tank 200 to a recovery oil tank 300 through the injector 100, including: an air compressor 400, a piston cylinder 500, and a switching valve 600. A piston cylinder 500 including a cylinder body 510 and a piston rod 520, the piston rod 520 being connected to the fuel injector 100 for controlling injection pressure of the fuel injector 100; the switching valve 600 is arranged between the air compressor 400 and the piston cylinder 500, and is respectively communicated with the air compressor 400 and the piston cylinder 500, and is used for controlling air supply, pressure maintaining and pressure relief of the piston cylinder 500.
Specifically, the inlet of the oil sprayer 100 is connected with the oil feeding tank 200, the outlet is connected with the recovery tank 300, the oil sprayer 100 needs to atomize and spray the oil in the oil feeding tank 200 to the recovery tank 300, but the normal operation of the oil sprayer 100 needs to charge pressure into the oil sprayer, the pressure required by the oil sprayer 100 can be realized through the left and right movement of the piston rod 520 of the piston cylinder 500, and the piston rod 520 of the piston cylinder 500 is connected with the oil sprayer 100; the movement of the piston rod 520 is realized through the piston cylinder 500, the piston cylinder 500 is communicated with the air compressor 400 through the switching valve 600, the switching valve 600 can control the connection of an air inlet pipeline of the air compressor 400 and a rodless cavity of the piston cylinder 500, the air compressor 400 charges compressed air into the rodless cavity of the cylinder body 510 of the piston cylinder 500, so that the piston rod 520 stretches outwards, the injector 100 is pressurized at the moment, the air inlet pipeline of the air compressor 400 is closed, the rodless cavity of the cylinder body 510 of the piston cylinder 500 is communicated with external air, the piston cylinder 500 is depressurized, the piston rod 520 is retracted, the injector 100 is depressurized at the moment, when the air inlet pipeline is closed after the compressed air is charged into the rodless cavity of the cylinder body 510 of the piston cylinder 500, the pipeline of the rodless cavity communicated with the outside is also closed, the piston rod 520 is kept motionless, and the injector 100 is depressurized at the moment; in this way, the extension and retraction of the piston rod 520 of the piston cylinder 500 can be controlled by the air compressor 400, and the extension and retraction length can also be controlled, so that the manual pressing into the fuel injector 100 is not needed, the calibration efficiency and accuracy of the fuel injector 100 are effectively improved, and the labor intensity of operators is reduced.
In summary, the above-mentioned method can avoid the influence of low pressure test efficiency and accuracy of the fuel injector 100, thereby better maintaining the working performance of the fuel injector 100, prolonging the service life of the fuel injector 100, reducing the occurrence rate of faults and improving economic benefits.
Preferably, a filter 700 for filtering impurities in the gas is provided between the switching valve 600 and the air compressor 400.
It will be appreciated that the air compressor 400 directly extracts air from the outside, and impurities in the air enter the switching valve 600 and the piston cylinder 500 to damage them to some extent, reducing the service life thereof.
Therefore, the filter 700 is disposed between the switching valve 600 and the air compressor 400, so that impurities in the inlet air can be effectively filtered out, the service lives of the switching valve 600 and the piston cylinder 500 can be prolonged, and the use cost can be reduced.
Preferably, the piston cylinder 500 is a single-acting cylinder.
It will be appreciated that in this embodiment, only one force for pressurizing is applied to fuel injector 100, and therefore, in order to reduce the cost, a simple structure, and a simple connection, single-acting cylinder is preferable.
Preferably, the piston cylinder 500 is a distance cylinder.
It will be appreciated that the pressure that can be sustained within injector 100 is limited and exceeding this limit can damage injector 100, and therefore, piston rod 520, which is applying pressure to injector 100, may be controlled to a stroke that is prevented from extending too far, resulting in excessive pressure to be sustained by injector 100 and damage.
In addition, the stroke controllability of the piston cylinder 500 is ensured, the pressure controllability during each oil injection in the oil injector 100 can be ensured, and the pressure testing accuracy is improved effectively; thus, in this embodiment, a distance cylinder is selected for the piston cylinder 500.
Preferably, the switching valve 600 is a three-position reversing valve, when the switching valve 600 is located at the first working position, the rodless cavity of the cylinder 510 is communicated with the air compressor 400, the rod-shaped cavity of the cylinder 510 is communicated with the outside, so that the piston cylinder 500 is pressurized, when the switching valve 600 is located at the second working position, the rodless cavity of the cylinder 510 is closed, the rod-shaped cavity of the cylinder 510 is communicated with the outside, so that the piston cylinder 500 is pressurized, and when the switching valve 600 is located at the third working position, the rodless cavity and the rod-shaped cavity of the cylinder 510 are both communicated with the outside, so that the piston cylinder 500 is depressurized.
It can be understood that in this embodiment, the injector 100 has three working states, namely pressurization, pressure maintaining and pressure relief, so the switching valve 600 is a three-position reversing valve, the leftmost side is a first working state, the rodless cavity of the cylinder 510 is communicated with the air compressor 400, the rod cavity of the cylinder 510 is communicated with the outside, compressed gas is filled into the rod cavity, the piston moves rightward, the injector 100 is pressurized, when the switching valve 600 works after the pressurization is completed, the left side is shifted, the middle position is a second working position, when the compressed gas in the rod cavity is leaked, the inlet of the rod cavity is closed, so that the gas cannot be discharged, the piston rod 520 cannot move, the injector 100 is subjected to pressure maintaining, after the test is completed, the injector 100 is required to be subjected to pressure relief, at this time, the switching valve 600 moves to the rightmost right position, so that the rod cavity is communicated with the outside, the gas is completely discharged, and the piston rod can move leftward under the reaction of the pressure relief 100, so that the injector 100 is completed; it should be noted that in this embodiment, the rod chamber is always in communication with the outside, and the gas inside the rod chamber is directly discharged into the air.
Preferably, the switching valve 600 is a reversing solenoid valve.
It will be appreciated that the reversing solenoid valve is conveniently and stably controlled and can respond quickly, and is therefore preferred in this embodiment.
In summary, the embodiment of the application provides a pneumatic device suitable for calibrating a diesel engine fuel injector, wherein a piston rod 520 in a piston cylinder 500 is used for applying pressure to the inside of a fuel injection paint, the power of the piston cylinder 500 is derived from an air compressor 400, and different working states of the piston cylinder 500 are changed through a switching valve 600, so that the fuel injector 100 is pressurized controllably, the efficiency and accuracy of pressure test are improved, and besides, the pneumatic device replaces manpower, reduces the labor intensity of operators and reduces the labor cost.
It should be noted that in this specification relational terms such as first and second are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The embodiments of the present utility model have been described in detail. The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.
Claims (6)
1. A pneumatic device suitable for diesel injector calibration for filling high pressure into an injector (100) to atomize and spray oil in an oil loading tank (200) through the injector (100) to a recovery tank (300), comprising:
An air compressor (400);
-a piston cylinder (500) comprising a cylinder body (510) and a piston rod (520), said piston rod (520) being connected to said injector (100) for controlling the injection pressure of said injector (100);
And the switching valve (600) is arranged between the air compressor (400) and the piston cylinder (500), is respectively communicated with the air compressor (400) and the cylinder body (510), and is used for controlling the pressurization, the pressure maintaining and the pressure relief of the piston cylinder (500).
2. A barometric device suitable for calibration of a diesel injector according to claim 1, characterized in that a filter (700) is arranged between said switching valve (600) and said air compressor (400) for filtering impurities in the gas.
3. A pneumatic device adapted for diesel injector calibration according to claim 1, characterized in that the piston cylinder (500) is a single acting cylinder.
4. A pneumatic device adapted for calibration of diesel fuel injectors according to claim 3, characterized in that the piston cylinder (500) is a distance cylinder.
5. The air pressure device suitable for calibrating a diesel injector according to claim 1, wherein the switching valve (600) is a three-position reversing valve, when the switching valve (600) is located at a first working position, the rodless cavity of the cylinder body (510) is communicated with the air compressor (400), the rod-shaped cavity of the cylinder body (510) is communicated with the outside, so that the piston cylinder (500) is pressurized, when the switching valve (600) is located at a second working position, the rodless cavity of the cylinder body (510) is closed, the rod-shaped cavity of the cylinder body (510) is communicated with the outside, so that the piston cylinder (500) is pressurized, and when the switching valve (600) is located at a third working position, the rodless cavity and the rod-shaped cavity of the cylinder body (510) are both communicated with the outside, so that the piston cylinder (500) is depressurized.
6. The air pressure device for diesel injector calibration according to claim 5, characterized in that the switching valve (600) is a reversing solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322732013.5U CN221054039U (en) | 2023-10-11 | 2023-10-11 | Air pressure device suitable for diesel engine fuel injector calibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322732013.5U CN221054039U (en) | 2023-10-11 | 2023-10-11 | Air pressure device suitable for diesel engine fuel injector calibration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221054039U true CN221054039U (en) | 2024-05-31 |
Family
ID=91204670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322732013.5U Active CN221054039U (en) | 2023-10-11 | 2023-10-11 | Air pressure device suitable for diesel engine fuel injector calibration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221054039U (en) |
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2023
- 2023-10-11 CN CN202322732013.5U patent/CN221054039U/en active Active
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