CN220185263U - Needle valve body structure of high-pressure common rail oil sprayer - Google Patents
Needle valve body structure of high-pressure common rail oil sprayer Download PDFInfo
- Publication number
- CN220185263U CN220185263U CN202322083159.1U CN202322083159U CN220185263U CN 220185263 U CN220185263 U CN 220185263U CN 202322083159 U CN202322083159 U CN 202322083159U CN 220185263 U CN220185263 U CN 220185263U
- Authority
- CN
- China
- Prior art keywords
- oil
- needle valve
- sprayer
- pipe body
- fuel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000446 fuel Substances 0.000 claims description 39
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 244000208734 Pisonia aculeata Species 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 239000003921 oil Substances 0.000 abstract description 112
- 239000000295 fuel oil Substances 0.000 abstract description 21
- 238000000889 atomisation Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
The utility model discloses a needle valve body structure of a high-pressure common rail oil sprayer, which relates to the technical field of needle valve bodies of high-pressure oil sprayers and aims to solve the problems that an existing needle valve body of an oil sprayer does not have a function of adjusting oil outlet pressure of fuel oil, limitation exists in improving fuel oil atomization rate and the overall practicability is to be improved. The effect that can nimble convenient regulation fuel oil pressure of producing oil, adjust the fuel oil atomizing rate, whole practicality is strong has been reached.
Description
Technical Field
The utility model relates to the technical field of needle valve bodies of high-pressure fuel injectors, in particular to a needle valve body structure of a high-pressure common rail fuel injector.
Background
The high-pressure fuel injector can spray fuel into the combustion chamber of the engine at high pressure, atomizes the fuel in the process of spraying the fuel, ensures the efficient combustion of the fuel in the combustion chamber, and consists of a plurality of components, wherein the fuel injector comprises a needle valve body structure.
The existing fuel injector needle valve body does not have the function of adjusting the fuel oil outlet pressure, has limitation in improving the fuel oil atomization rate, and has the advantage of improving the overall practicability.
Disclosure of Invention
The utility model aims to provide a needle valve body structure of a high-pressure common rail fuel injector, which can flexibly and conveniently adjust the fuel oil outlet pressure, adjust the fuel oil atomization rate and has strong overall practicability.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the needle valve body structure of the high-pressure common rail oil sprayer comprises a first oil sprayer pipe body and a second oil sprayer pipe body, wherein the first oil sprayer pipe body and the second oil sprayer pipe body are in threaded connection, a needle valve rod is movably mounted at the position of an inner center shaft of the first oil sprayer pipe body, a movable sleeve is movably sleeved at one end of the needle valve rod, a second reset spring is sleeved at the outer part of the movable sleeve, a rotary mounting hole is formed in the side surface of the first oil sprayer pipe body, a linkage shaft is connected to the inner part of the rotary mounting hole in a rotary mode, a cam is fixedly mounted at one end of the linkage shaft, and the edge of the cam is propped against the end face of the movable sleeve.
Through adopting above-mentioned technical scheme, can drive movable sleeve displacement through the cam, and then compress second reset spring, adjust the fuel pressure that top moves the needle valve rod and remove for this needle valve rod possesses fuel pressure regulation function.
Further, one end of the linkage shaft is fixedly connected with a worm wheel, a worm is rotatably arranged on the side surface of the first oil sprayer pipe body, and the worm is meshed with the worm wheel.
Through adopting above-mentioned technical scheme, can nimble convenient stir cam and rotate, improve the regulation convenience.
Further, the inside of first sprayer body is provided with the regulation chamber, the outside of needle valve rod has cup jointed first reset spring, first reset spring's the inside that is located the regulation chamber, the one end of needle valve rod is installed in the fuel sprayer oil inlet of first sprayer body, the inside of first sprayer body is provided with first oil pocket, the needle valve rod runs through in the inside axis position department of first oil pocket.
Through adopting above-mentioned technical scheme, through can effectually top movable needle valve rod removal to the inside fuel pressure of first oil pocket, realize stable oil spout operation.
Further, a second oil cavity is formed in the first oil sprayer pipe body, an oil inlet hole is formed in the side surface of the first oil sprayer pipe body, and the oil inlet hole is communicated with the second oil cavity and the first oil cavity respectively.
By adopting the technical scheme, the stability of the flow of the internal fuel is ensured.
Further, a third oil cavity is formed in the second oil sprayer pipe body, an installation block is connected to the inner wall of the third oil cavity in a threaded mode, an armature is movably connected to the center shaft position of the installation block, a plurality of through holes are formed in the edge position of the installation block, an orifice is formed in the end face of the first oil sprayer pipe body, the third oil cavity is communicated with the second oil cavity through the orifice, a plug is arranged at one end of the armature, and the plug corresponds to the orifice in position.
By adopting the technical scheme, the communication between the second oil cavity and the third oil cavity is controlled by the movement of the armature.
Further, two electromagnets are fixedly installed on the inner top wall of the second oil sprayer pipe body, each electromagnetic comprises an iron core and a coil, the coil is wound outside the iron core, a pull-back spring is fixedly connected on the inner top wall of the second oil sprayer pipe body, the other end of the pull-back spring is fixedly connected on the end face of the armature, annular permanent magnet steel is fixedly connected on the end face of the armature, and an oil return hole is formed in the center shaft position of the end face of the second oil sprayer pipe body.
Through adopting above-mentioned technical scheme, through the removal to the power on drive armature of electromagnetic ware, ensure convenience and the stability of work of using.
According to the utility model, in the use process, one end of the worm is screwed to enable the worm to rotate, the worm wheel is driven to rotate by the worm, then the cam rotates in the first oil sprayer pipe body under the linkage of the linkage shaft, the rotating cam can effectively extrude one end of the movable sleeve pipe, so that the second reset spring is compressed, the reaction force of the second reset spring enables the acting force of one end of the needle valve rod against the inside of the oil inlet of the oil sprayer to be increased, when oil spraying is needed, the pressure of fuel in the first oil cavity needs to be increased, so that the oil outlet pressure of the oil sprayer is increased, and the structure enables the needle valve rod to have a pressure adjusting function, and the functionality and the practicability to be effectively improved.
Drawings
FIG. 1 is a perspective view of the present utility model;
FIG. 2 is an enlarged view of the utility model at A of FIG. 1;
FIG. 3 is an internal block diagram of the present utility model;
fig. 4 is an enlarged view of fig. 2B in accordance with the present utility model.
In the figure: 1. a first injector tube; 2. a second injector tube; 3. an oil inlet hole; 4. an oil return hole; 5. a worm wheel; 6. a worm; 7. a needle valve rod; 8. a regulating chamber; 9. a first return spring; 10. a first oil chamber; 11. a second oil chamber; 12. a third oil chamber; 13. an armature; 14. a pull-back spring; 15. an electromagnetic device; 16. a movable sleeve; 17. a second return spring; 18. a cam; 19. and a linkage shaft.
Detailed Description
The process according to the utility model is described in further detail below with reference to the accompanying drawings.
Referring to fig. 1, 2, 3 and 4, a needle valve body structure of a high-pressure common rail injector comprises a first injector pipe body 1 and a second injector pipe body 2, wherein the first injector pipe body 1 and the second injector pipe body 2 are in threaded connection, a needle valve rod 7 is movably arranged at the position of a central axis in the first injector pipe body 1, a movable sleeve 16 is movably sleeved at the outer part of one end of the needle valve rod 7, a second return spring 17 is sleeved at the outer part of the movable sleeve 16, a rotary mounting hole is arranged on the side surface of the first injector pipe body 1, a linkage shaft 19 is rotatably connected in the rotary mounting hole, a cam 18 is fixedly arranged at one end of the linkage shaft 19, the edge of the cam 18 is propped against the end surface of the movable sleeve 16, a worm wheel 5 is fixedly connected at one end of the linkage shaft 19, a worm 6 is rotatably arranged on the side surface of the first injector pipe body 1, the worm 6 is meshed with the worm wheel 5, an adjusting cavity 8 is arranged in the first oil sprayer pipe body 1, a first reset spring 9 is sleeved outside the needle valve rod 7, one end of the needle valve rod 7 is inserted into an oil inlet of an oil sprayer of the first oil sprayer pipe body 1, a first oil cavity 10 is arranged in the first oil sprayer pipe body 1, the needle valve rod 7 penetrates through the position of a central axis in the first oil cavity 10, one end of the worm 6 can be screwed to enable the worm 6 to rotate in the use process, the worm 6 drives the worm wheel 5 to rotate, then a cam 18 rotates in the first oil sprayer pipe body 1 under the linkage of a linkage shaft 19, one end of a movable sleeve 16 can be effectively extruded by the rotating cam 18, the second reset spring 17 is compressed, the reaction force of the second return spring 17 enables the acting force of one end of the needle valve rod 7 against the inside of the oil inlet of the oil nozzle to be increased, when oil injection is needed, the pressure of fuel in the first oil cavity 10 needs to be increased, so that the oil outlet pressure of the oil injector is increased, and the structure enables the needle valve rod 7 to have a pressure adjusting function, and the functionality and the practicability are effectively improved.
Referring to fig. 3, a second oil chamber 11 is provided in the first oil injector pipe body 1, an oil inlet 3 is provided on a side surface of the first oil injector pipe body 1, the oil inlet 3 is respectively communicated with the second oil chamber 11 and the first oil chamber 10, a third oil chamber 12 is provided in the second oil injector pipe body 2, a mounting block is connected to an inner wall of the third oil chamber 12 in a threaded manner, an armature 13 is movably connected to a center shaft position of the mounting block, a plurality of through holes are provided at an edge position of the mounting block, an orifice is provided on an end surface of the first oil injector pipe body 1, the third oil chamber 12 is communicated with the second oil chamber 11 through the orifice, a plug is provided at one end of the armature 13 and corresponds to the orifice position, two electromagnets 15 are fixedly mounted on an inner top wall of the second oil injector pipe body 2, the electromagnets 15 comprise an iron core and a coil, the coil is wound outside the iron core, a pull-back spring 14 is fixedly connected to the inner top wall of the second oil injector pipe body 2, the other end of the pull-back spring 14 is fixedly connected to the end face of the armature 13, annular permanent magnet steel is fixedly connected to the end face of the armature 13, an oil return hole 4 is arranged at the middle axis position of the end face of the second oil injector pipe body 2, fuel can be led into the second oil cavity 11 through the oil inlet hole 3, at the moment, the fuel passes through a fuel saving hole on the end face of the first oil injector pipe body 1 to enter the third oil cavity 12, finally, the fuel is discharged from the oil return hole 4, at the moment, the oil injector is in a state of stopping oil injection, when oil injection is needed, the electromagnetic 15 is electrified, a magnetic force is generated by an iron core at one end of the electromagnetic 15, then, the armature 13 moves in the third oil cavity 12 under the action of the permanent magnet steel, a plug at one end of the armature 13 is blocked in the orifice, at the moment, the fuel continuously enters the first oil cavity 10 along an internal fluid channel, along with the gradual increase of the pressure of the fuel in the first oil cavity 10, the high-pressure fuel ejector pin valve rod 7 moves axially, the first return spring 9 and the second return spring 17 are compressed, the high-pressure fuel in the first oil cavity 10 is ejected from the oil nozzle at one end of the first oil injector pipe body 1, stable oil injection operation is realized, and the structure enables the oil injector to be used normally.
Working principle: when in use, the fuel injector is firstly arranged at a designated position, then an external fuel supply pipeline and an oil return pipeline are connected, then the fuel oil outlet pressure and the atomization effect of the fuel oil are regulated according to the requirement, during regulation, one end of the worm 6 is directly screwed to enable the worm 6 to rotate, the worm wheel 5 is driven to rotate by the worm 6, then the cam 18 rotates in the first fuel injector pipe body 1 under the linkage of the linkage shaft 19, the rotating cam 18 can effectively extrude one end of the movable sleeve 16, so that the second return spring 17 is compressed, the reaction force of the second return spring 17 enables the acting force of one end of the needle valve rod 7 against the inside of the fuel oil inlet of the fuel oil nozzle to be increased, when the fuel oil is required to be injected, the fuel oil outlet pressure of the fuel injector is increased, then the fuel oil is guided into the second fuel oil cavity 11 through the fuel inlet hole 3, at this time, the fuel oil passes through the oil saving hole on the end face of the first oil injector pipe body 1 to enter the third oil cavity 12, and finally is discharged from the oil return hole 4, at this time, the oil injector is in a state of stopping oil injection, when oil injection is needed, the electromagnetic 15 is electrified, the iron core at one end of the electromagnetic 15 generates magnetic force, then under the action of permanent magnet steel, the armature 13 moves in the third oil cavity 12, the plug at one end of the armature 13 is plugged in the orifice, at this time, the fuel oil continuously enters the first oil cavity 10 along with the internal fluid channel, along with the gradual increase of the pressure of the fuel oil in the first oil cavity 10, the high-pressure fuel oil pushes against the needle valve rod 7 to axially move, the first return spring 9 and the second return spring 17 are compressed, the high-pressure fuel oil in the first oil cavity 10 is ejected from the oil nozzle at one end of the first oil injector pipe body 1, and the oil outlet pressure can be effectively improved, improving the atomization effect.
The embodiments of the present utility model are all preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model in this way, therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.
Claims (6)
1. The utility model provides a needle valve body structure of high pressure common rail sprayer, includes first sprayer body (1), second sprayer body (2), its characterized in that: the novel fuel injector is characterized in that the first fuel injector pipe body (1) and the second fuel injector pipe body (2) are in threaded connection, a needle valve rod (7) is movably mounted at the position of an inner center shaft of the first fuel injector pipe body (1), a movable sleeve (16) is movably sleeved at one end of the needle valve rod (7), a second reset spring (17) is sleeved at the outer portion of the movable sleeve (16), a rotary mounting hole is formed in the side surface of the first fuel injector pipe body (1), a linkage shaft (19) is rotatably connected to the inner portion of the rotary mounting hole, a cam (18) is fixedly mounted at one end of the linkage shaft (19), and the edge of the cam (18) is abutted to the end face of the movable sleeve (16).
2. The needle valve body structure of a high pressure common rail injector of claim 1, wherein: one end of the linkage shaft (19) is fixedly connected with a worm wheel (5), a worm (6) is rotatably arranged on the side surface of the first oil sprayer pipe body (1), and the worm (6) is meshed with the worm wheel (5).
3. The needle valve body structure of a high pressure common rail injector of claim 1, wherein: the inside of first sprayer body (1) is provided with regulation chamber (8), the outside of needle valve rod (7) has cup jointed first reset spring (9), the inside of being located regulation chamber (8) of first reset spring (9), the one end of needle valve rod (7) is installed in the fuel sprayer oil inlet of first sprayer body (1), the inside of first sprayer body (1) is provided with first oil pocket (10), needle valve rod (7) run through in the inside axis position department of first oil pocket (10).
4. A needle valve body structure of a high pressure common rail injector as defined in claim 3, wherein: the novel fuel injector is characterized in that a second oil cavity (11) is formed in the first fuel injector pipe body (1), an oil inlet hole (3) is formed in the side surface of the first fuel injector pipe body (1), and the oil inlet hole (3) is communicated with the second oil cavity (11) and the first oil cavity (10) respectively.
5. The needle valve body structure of a high pressure common rail injector of claim 4, wherein: the inside of second sprayer body (2) is provided with third oil pocket (12), threaded connection has the installation piece on the inner wall of third oil pocket (12), and the axis position department swing joint of installation piece has armature (13), and installation piece edge is provided with a plurality of through-holes, be provided with the orifice on the terminal surface of first sprayer body (1), through orifice intercommunication between third oil pocket (12) and second oil pocket (11), the one end of armature (13) is provided with the end cap, and end cap and orifice position correspond.
6. The needle valve body structure of a high pressure common rail injector of claim 5, wherein: two electromagnets (15) are fixedly installed on the inner top wall of the second oil sprayer pipe body (2), each electromagnet (15) comprises an iron core and a coil, the coil is wound outside the iron core, a pull-back spring (14) is fixedly connected to the inner top wall of the second oil sprayer pipe body (2), the other end of the pull-back spring (14) is fixedly connected to the end face of the armature (13), annular permanent magnet steel is fixedly connected to the end face of the armature (13), and an oil return hole (4) is formed in the center shaft position of the end face of the second oil sprayer pipe body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322083159.1U CN220185263U (en) | 2023-08-04 | 2023-08-04 | Needle valve body structure of high-pressure common rail oil sprayer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322083159.1U CN220185263U (en) | 2023-08-04 | 2023-08-04 | Needle valve body structure of high-pressure common rail oil sprayer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220185263U true CN220185263U (en) | 2023-12-15 |
Family
ID=89115353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322083159.1U Active CN220185263U (en) | 2023-08-04 | 2023-08-04 | Needle valve body structure of high-pressure common rail oil sprayer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220185263U (en) |
-
2023
- 2023-08-04 CN CN202322083159.1U patent/CN220185263U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113153595B (en) | Low hydraulic swirl injector | |
| EP0385399A3 (en) | Perfected diesel engine electromagnetic fuel injector | |
| CN104632484A (en) | Fuel electro-injector for a fuel injection system for an internal combustion engine | |
| CN115387944B (en) | Low oil return variable needle valve opening speed electric control oil sprayer | |
| CN220185263U (en) | Needle valve body structure of high-pressure common rail oil sprayer | |
| CN115992785B (en) | Micro oil return electric control oil sprayer with double needle valves and variable oil injection rate | |
| CN209458049U (en) | Rotary oil ejector | |
| CN104775954B (en) | Oil-return-free common-rail injector controlled by electromagnetic valve | |
| CN210919297U (en) | Piezoelectric type electric control oil injector | |
| CN215719174U (en) | Novel oil sprayer | |
| CN114320695B (en) | Air-entraining spraying atomizing air nozzle | |
| CN210686166U (en) | Electric control oil injector | |
| CN205478036U (en) | Two fuel sprayer sprayers of diesel engine | |
| CN201221425Y (en) | High pressure common rail fuel injector | |
| CN205503333U (en) | Built -in triangle changes high -efficient diesel engine fuel sprayer of tooth | |
| CN109595110A (en) | Rotary oil ejector | |
| CN220185248U (en) | Device for controlling oil return of high-pressure oil sprayer | |
| CN214464616U (en) | Variable flow fuel injector | |
| CN218493706U (en) | Prevent fuel sprayer idol piece of jam | |
| CN114658580B (en) | Air-clamping spray nozzle with swirl groove on head | |
| CN209724554U (en) | A kind of electric control monoblock fuel-injection pump of single cylinder diesel | |
| CN216198585U (en) | Adjustable oil nozzle, engine and automobile | |
| CN207761861U (en) | A kind of connection structure convenient for fuel injector inner needle valve body and mandril installation | |
| CN218151215U (en) | Stable and reliable oil nozzle for diesel engine | |
| CN111365152A (en) | Engine and oil injector thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |