CN117329043A - gas injector - Google Patents
gas injector Download PDFInfo
- Publication number
- CN117329043A CN117329043A CN202311401424.4A CN202311401424A CN117329043A CN 117329043 A CN117329043 A CN 117329043A CN 202311401424 A CN202311401424 A CN 202311401424A CN 117329043 A CN117329043 A CN 117329043A
- Authority
- CN
- China
- Prior art keywords
- armature
- needle valve
- injector
- gas
- seal
- 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.)
- Granted
Links
- 239000003921 oil Substances 0.000 claims abstract description 58
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000010687 lubricating oil Substances 0.000 claims abstract description 31
- 238000002347 injection Methods 0.000 claims abstract description 30
- 239000007924 injection Substances 0.000 claims abstract description 30
- 238000005461 lubrication Methods 0.000 claims abstract description 30
- 238000007789 sealing Methods 0.000 claims description 35
- 238000013016 damping Methods 0.000 claims description 9
- 239000012530 fluid Substances 0.000 abstract description 2
- 238000005299 abrasion Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0001—Fuel-injection apparatus with specially arranged lubricating system, e.g. by fuel oil
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention relates to the technical field of automobile power systems, in particular to a gas injector. Because the injection casing is provided with first lubricated oil duct, and the iron core is provided with the second lubricated oil duct, first lubricated oil duct and the intercommunication of second lubricated oil duct, first lubricated oil duct joinable external lubricating oil source, in the lubricated oil duct of lubricating oil source accessible first lubricated oil duct gets into the second like this, because the second lubricated oil duct communicates with the center holding tank, lubricated fluid gets into the center holding tank through the lubricated oil duct like this, the center holding tank is provided with the armature subassembly, the lubricating oil of inflow center holding tank can provide lubrication for the armature subassembly, prevent armature subassembly and the two friction deformation of iron core.
Description
Technical Field
The invention relates to the technical field of automobile power systems, in particular to a gas injector.
Background
The gas injector is responsible for supplying fuel to the power unit of the automobile in a timed and quantitative mode, and is a core functional component of the power system of the automobile. The gas injector is generally composed of various parts such as an electromagnetic valve, a sealing element and the like, and is connected with an electric control unit through an electric connection wire harness and driven and controlled by the electric control unit. The driving signal of the electric control unit is input into the electromagnetic valve through the connecting wire harness and the connecting plug, and the electromagnetic valve generates electromagnetic force to further operate the injector to supply gas fuel to the automobile power unit.
Because the relative sliding pair of the existing gas injector is not lubricated by fuel oil, abrasion and clamping stagnation are easy to generate; the sealing surface and the impact surface are not protected by oil films, and are easy to wear and deform, so that a lubricating oil way is added for the gas injector in the prior art. However, in the prior art, the lubrication oil path of the gas injector is in a closed state, the lubrication medium is injected into the gas injector during assembly, and the lubrication medium is lost along with the movement of the moving part, so that the lubrication requirement cannot be met finally.
Therefore, a gas injector is needed to solve the above technical problems.
Disclosure of Invention
The invention aims to provide a gas injector which can add new lubricating medium to meet the lubricating requirement.
To achieve the purpose, the invention adopts the following technical scheme:
a gas injector, comprising:
the jet shell is provided with an air inlet and an air outlet, and is provided with a first lubricating oil duct;
the electromagnet comprises a coil and an iron core, wherein the coil and the iron core are both arranged in the injection shell, the iron core is provided with a second lubricating oil duct, an air inlet duct and a central accommodating groove, and the second lubricating oil duct is communicated with the first lubricating oil duct and the central accommodating groove;
an armature assembly disposed within the injection housing, a portion of the armature assembly extending into the central receiving slot;
the armature spring is arranged in the central accommodating groove, and two ends of the armature spring respectively abut against the bottom of the central accommodating groove and the armature assembly;
the needle valve assembly is arranged at the air outlet of the injection shell.
As a preferable technical scheme of the gas injector, the inner wall of the injection housing is provided with an annular oil groove, the annular oil groove is connected with the first lubricating oil duct and the second lubricating oil duct, and the height of the annular oil groove is respectively greater than the heights of the first lubricating oil duct and the second lubricating oil duct.
As a preferable technical scheme of the gas injector, a first sealing structure is arranged between the iron core and the injection shell, and the first sealing structure is arranged at two ends of the annular oil groove.
As a preferable technical scheme of the gas injector, a second sealing structure is arranged between the armature assembly and the iron core.
As a preferred technical scheme of the gas injector, the armature assembly comprises an armature main body and an armature pin, wherein the armature main body is arranged at one end of the iron core, which faces the gas outlet, one end of the armature pin penetrates through the armature main body and stretches into the central accommodating groove, and the other end of the armature pin seals the gas outlet.
As a preferable technical scheme of the gas injector, the armature assembly further comprises an armature damping spring, and two ends of the armature damping spring are respectively connected with the inner wall of the injected shell and the armature main body.
As a preferred technical solution of the above gas injector, the armature assembly further comprises a seal seat fixedly connected to the other end of the armature pin, the seal seat closing the gas outlet.
As a preferred technical solution of the above gas injector, the seal seat includes a first seal member and a second seal member, the first seal member is fixedly connected with the other end of the armature pin, the second seal member is disposed at one end of the first seal member facing away from the armature pin, and the second seal member can cover the gas outlet.
As a preferable technical scheme of the gas injector, the injection housing includes an air inlet connector, an injector upper body and an injector lower body, one end of the air inlet connector extends into the first end of the injector upper body, the second end of the injector upper body extends into the injector lower body, the injector upper body is connected with the injector lower body to form a containing chamber for containing the coil, and the iron core, the armature assembly and the armature spring are all arranged in the injector upper body.
As a preferable technical scheme of the gas injector, the gas inlet hole of the gas inlet joint comprises a first hole and a second hole, the first hole is communicated with the second hole, the diameter of the second hole is larger than that of the first hole, and the second hole is communicated with the second lubricating oil duct.
As a preferred technical scheme of the gas injector, the needle valve assembly comprises a lock nut, a needle valve spring seat, a needle valve spring, a needle valve body and a needle valve, wherein the needle valve body is fixedly connected with one end of the lower body of the injector, which is away from the air inlet joint, the needle valve spring seat is arranged in the needle valve body, a first limiting protrusion and a second limiting protrusion are arranged in the needle valve body, the distance between the first limiting protrusion and the injection shell is smaller than that between the second limiting protrusion and the injection shell, the needle valve spring seat is abutted against the first limiting protrusion, one end of the needle valve spring extends into the needle valve spring seat, the other end of the needle valve is abutted against the second limiting protrusion, and one end of the needle valve penetrates through the needle valve spring seat and then is connected with the lock nut.
The invention has the beneficial effects that:
because the injection casing is provided with first lubricated oil duct, and the iron core is provided with the second lubricated oil duct, first lubricated oil duct and the intercommunication of second lubricated oil duct, first lubricated oil duct joinable external lubricating oil source, in lubricated active accessible first lubricated oil duct got into the second lubricated oil duct like this, because second lubricated oil duct and center holding tank intercommunication, lubricated fluid gets into the center holding tank through the second lubricated oil duct like this, center holding tank is provided with the armature subassembly, the lubricating oil of inflow center holding tank can provide lubrication for the armature subassembly, prevent armature subassembly and the two friction deformation of iron core.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly explain the drawings needed in the description of the embodiments of the present invention, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the contents of the embodiments of the present invention and these drawings without inventive effort for those skilled in the art.
FIG. 1 is a cross-sectional view of a gas injector according to an embodiment of the present invention;
FIG. 2 is a second cross-sectional view of a gas injector according to an embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 1 at A;
FIG. 4 is an enlarged view of a portion of FIG. 1 at B;
fig. 5 is an enlarged view of a portion of a needle valve body provided in an embodiment of the present invention.
In the figure:
1. a jet housing; 11. an air inlet joint; 12. an injector upper body; 121. a first lubrication oil passage; 122. an annular oil groove; 123. a sealing ring belt structure; 13. an injector lower body; 101. an air inlet; 102. an air outlet; 2. an electromagnet; 21. a coil; 22. an iron core; 221. a second lubrication oil passage; 222. an air inlet channel; 223. a center receiving groove; 3. an armature assembly; 31. an armature body; 32. armature pin; 33. an armature damping spring; 34. a sealing seat; 341. a first seal; 342. a second seal; 4. a needle valve assembly; 41. a lock nut; 42. needle valve spring seat; 421. a gas via; 43. a needle valve spring; 44. a needle valve body; 441. the first limiting protrusion; 442. the second limiting bulge; 45. a needle valve core; 46. a needle valve gasket; 5. a first sealing structure; 6. a second sealing structure; 7. an armature spring.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
Embodiments of the present application provide a gas injector that can be directly connected to an external source of oil to ensure lubrication needs.
Specifically, as shown in fig. 1 and 2, the gas injector includes an injection housing 1, an electromagnet 2, an armature assembly 3, an armature spring 7, and a needle valve assembly 4, wherein the injection housing 1 is provided with an air inlet 101 and an air outlet 102, and the injection housing 1 is provided with a first lubrication oil passage 121; the electromagnet 2 comprises a coil 21 and an iron core 22, wherein the coil 21 and the iron core 22 are both arranged in the injection shell 1, the iron core 22 is provided with a second lubricating oil duct 221, an air inlet duct 222 and a central accommodating groove 223, and the second lubricating oil duct 221 is communicated with the first lubricating oil duct 121 and the central accommodating groove 223; the armature assembly 3 is arranged in the injection shell 1, and part of the armature assembly 3 extends into the central accommodating groove 223; the armature spring 7 is arranged in the central accommodating groove 223, and two ends of the armature spring 7 respectively prop against the bottom of the central accommodating groove 223 and the armature assembly 3; the needle valve assembly 4 is provided at the air outlet 102 of the injection housing 1.
Since the injection housing 1 is provided with the first lubrication oil passage 121 and the iron core 22 is provided with the second lubrication oil passage 221, the first lubrication oil passage 121 is communicated with the second lubrication oil passage 221, the first lubrication oil passage 121 can be connected with an external lubrication oil source, thus lubrication active can enter the second lubrication oil passage 221 through the first lubrication oil passage 121, and since the second lubrication oil passage 221 is communicated with the central accommodating groove 223, lubrication oil can enter the central accommodating groove 223 through the second lubrication oil passage 221, the central accommodating groove 223 is provided with the armature assembly 3, lubrication oil flowing into the central accommodating groove 223 can provide lubrication for the armature assembly 3, and friction deformation of the armature assembly 3 and the iron core 22 is prevented.
It should be noted that the external lubricating oil source may be an oil tank.
Further, the inner wall of the jet housing 1 is provided with an annular oil groove 122, the annular oil groove 122 connects the first lubricating oil passage 121 and the second lubricating oil passage 221, and the height of the annular oil groove 122 is greater than the heights of the first lubricating oil passage 121 and the second lubricating oil passage 221, respectively. The provision of the annular oil groove 122 can achieve the reduction of the assembly requirement between the jet housing 1 and the iron core 22, so that the purpose of communicating the annular oil groove 122 with the first lubricating oil passage 121 and the second lubricating oil passage 221 can be achieved regardless of the installation of the iron core 22.
In order to improve the sealing performance between the iron core 22 and the ejection housing 1, a first sealing structure 5 is provided between the iron core 22 and the ejection housing 1, and the first sealing structure 5 is provided at both ends of the annular oil groove 122. This prevents the lubricant from exposing the gap between the iron core 22 and the jet housing 1 to ensure the cleanliness of the gas jet as a whole.
In some embodiments, a second seal 6 is provided between the armature assembly 3 and the core 22. The second seal structure 6 functions to prevent the outflow of the lubricating oil from the center receiving groove 223 through the gap between the core 22 and the armature assembly 3, thus preventing the oil from being mixed with the gas and flowing out of the gas outlet.
For example, the first sealing structure 5 and the second sealing structure 6 are both sealing rings.
In some embodiments, the armature assembly 3 includes an armature body 31 and an armature pin 32, the armature body 31 being disposed at an end of the core 22 facing the air outlet 102, the armature pin 32 having one end passing through the armature body 31 and extending into the central receiving slot 223, the other end of the armature pin 32 closing the air outlet 102.
Alternatively, the armature pin 32 and the armature body 31 may be connected by an interference fit. In order to prevent the air outlet 102 from being opened due to the axial movement of the armature body 31 relative to the armature rod 32, the armature body 31 is provided with a first limiting portion, the armature rod 32 is provided with a second limiting portion, and the first limiting portion and the second limiting portion cooperate with each other to prevent the armature body 31 from moving axially upward along the armature rod 32.
Specifically, the armature body 31 is provided with a stepped hole, the armature pin 32 includes a first rod and a second rod, the first rod is connected with the second rod, and the diameter of the first rod is larger than that of the second rod, so that the second rod partially passes through the stepped hole, and the end of the first rod is in contact with the hole bottom of the large hole of the stepped hole, that is, the second limiting portion is an end surface of the first rod connected with the second rod, and the first limiting portion is the hole bottom of the large hole.
In order to enable the armature assembly 3 to return automatically after the electromagnet 2 is de-energized, the armature assembly 3 further comprises an armature damping spring 33, and two ends of the armature damping spring 33 are respectively connected with the inner wall of the injection housing 1 and the armature main body 31. The armature main body 31 moves upwards to stretch the armature damping spring 33, so that after the electromagnet 2 is powered off, the armature main body 31 can be quickly reset under the restoring force of the armature damping spring 33, and the speed of closing the air outlet is improved.
In order to achieve a good sealing effect when the air outlet 102 is closed, the armature assembly 3 further comprises a seal seat 34, the seal seat 34 is fixedly connected with the other end of the armature rod 32, and the seal seat 34 closes the air outlet 102.
Further, the seal seat 34 includes a first seal 341 and a second seal 342, the first seal 341 is fixedly connected with the other end of the armature pin 32, the second seal 342 is disposed at one end of the first seal 341 facing away from the armature pin 32, and the second seal 342 can cover the air outlet 102. The first sealing member 341 is a metal sealing member, and the second sealing member 342 is a non-metal sealing member, specifically, a rubber sealing member.
In some embodiments, the injector housing 1 includes an air inlet fitting 11, an injector upper body 12, and an injector lower body 13, one end of the air inlet fitting 11 extends into a first end of the injector upper body 12, the air inlet fitting 11 communicates with the injector upper body 12 such that air can be introduced into the injector upper body 12, and a second end of the injector upper body 12 extends into the injector lower body 13, the injector upper body 12 is connected with the injector lower body 13 to form a receiving chamber for receiving the coil 21, and the core 22, the armature assembly 3, and the armature spring 7 are disposed within the injector upper body 12. The injector upper body 12 and the injector lower body 13 may be welded to each other, and the intake joint 11 may also be welded to the injector upper body 12.
The air outlet 102 is disposed on the injector upper body 12, the air inlet 101 is disposed on the air inlet joint 11, as shown in fig. 3, a sealing ring belt structure 123 is further disposed at the air outlet 102, and the sealing ring belt structure 123 can abut against the second sealing member 342, so as to improve the sealing performance.
To flow the air intake joint 11 into the injector upper body 12 and all into the air intake passage 222, in some embodiments, the air intake hole of the air intake joint 11 includes a first hole and a second hole, the first hole communicating with the second hole, the second hole having a diameter larger than the first hole, the second hole communicating with the second lubrication oil passage 221. It should be noted that, along the axis of the injection casing 1, the opening of the air inlet 222 is located in the projection area of the second hole on the end face of the iron core 22, so that the air can enter the air inlet 222 from the air inlet hole entirely.
Specifically, referring to fig. 1-2 and fig. 4-5, the needle valve assembly 4 includes a lock nut 41, a needle valve spring seat 42, a needle valve spring 43, a needle valve body 44 and a needle valve core 45, wherein the needle valve body 44 is fixedly connected with one end of the injector lower body 13, which is far away from the air inlet joint 11, the needle valve spring seat 42 is disposed in the needle valve body 44, a first limiting protrusion 441 and a second limiting protrusion 442 are disposed in the needle valve body 44, a distance between the first limiting protrusion 441 and the injection shell 1 is smaller than a distance between the second limiting protrusion 442 and the injection shell 1, the needle valve spring seat 42 is abutted against the first limiting protrusion 441 and supported by the first limiting protrusion 441, one end of the needle valve spring 43 extends into the needle valve spring seat 42, the other end of the needle valve spring 43 is abutted against the second limiting protrusion 442, and one end of the needle valve core 45 is connected with the lock nut 41 after passing through the needle valve spring seat 42, so that the purpose of fixing the needle valve core 45 can be achieved. The other end of the needle valve core 45 is located outside the needle valve body 44, the other end of the needle valve core 45 is provided with a needle valve gasket 46, the needle valve gasket 46 abuts against the needle valve body 44, an opening of the needle valve body 44 close to the needle valve gasket 46 is conical, and the needle valve gasket 46 is of a liquid level conical structure, so that the contact area between the needle valve body 44 and the needle valve gasket 46 can be increased, and the sealing performance between the needle valve gasket 46 and the needle valve body 44 can be improved.
The needle spring seat 42 is provided with a gas passage hole 421 for passage of gas from the needle spring seat 42.
The upper end of the needle valve body 44 is provided with a chamber for containing gas, when the needle valve core 45 is closed to the needle valve body 44, the end face of the needle valve core 45, which is close to the injection shell 1, is positioned in the needle valve body 44, but not protrudes out of the needle valve body 44 or is flush with the needle valve body 44, so that the needle valve core 45 can be pushed by gas to move relative to the needle valve body 44, and the needle valve core 45 can open an opening of the needle valve body 44 to spray the gas. Embodiments of the present application may increase the service life of the needle valve spool 45 compared to prior art by striking the needle valve spool 45 to cause the needle valve spool 45 to move.
The needle valve core 45 is opened against the spring force of the needle valve spring 43 by the pressure of the gas, and the gas is uniformly distributed in each position in the needle valve body 44, so that the gas acting force born by the needle valve core 45 is circumferentially uniform, the deflection possibility of the needle valve core 45 is reduced, and the abrasion of the needle valve core 45 and the needle valve body 44 is greatly reduced.
Because the seal seat 34 seals the gas outlet 102 and the needle gasket 46 seals the needle valve body 44, the overall sealing performance of the gas injector is achieved with the two-stage seal described above.
When the gas injector is not energized, it is in a closed state by the spring force of the armature spring 7 and the needle valve spring 43. When energized, the armature body 31 moves towards the iron core 22 under the action of electromagnetic force and drives the armature rod 32 to move, so that the sealing seat 34 is lifted up against the spring force of the armature spring 7, and the air outlet 102 is opened. Gas enters the gas nozzle through a path H shown by a broken line in fig. 1. The pressure of the gas acts on the needle valve core 45 such that the needle valve core 45 opens against the spring force of the needle valve spring 43 and the needle valve gasket 46 opens and the gas injector begins to inject gas. Note that the armature pin 32 and the iron core 22 are coupled. The second sealing structure 6 is arranged on the iron core 22, so that a sealed lubricating oil cavity is formed in the central accommodating groove 223 of the iron core 22, lubrication is provided for the motion of the armature pin 32 and the iron core 22, and friction and abrasion are reduced.
Furthermore, the foregoing description of the preferred embodiments and the principles of the invention is provided herein. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (10)
1. A gas injector, comprising:
the device comprises a jet housing (1) provided with an air inlet (101) and an air outlet (102), wherein the jet housing (1) is provided with a first lubricating oil duct (121);
the electromagnet (2) comprises a coil (21) and an iron core (22), wherein the coil (21) and the iron core (22) are arranged in the injection shell (1), the iron core (22) is provided with a second lubricating oil duct (221), an air inlet duct (222) and a central accommodating groove (223), and the second lubricating oil duct (221) is communicated with the first lubricating oil duct (121) and the central accommodating groove (223);
an armature assembly (3) disposed within the injection housing (1), a portion of the armature assembly (3) extending into the central receiving slot (223);
an armature spring (7) arranged in the central accommodating groove (223), wherein two ends of the armature spring (7) respectively prop against the groove bottom of the central accommodating groove (223) and the armature assembly (3);
the needle valve assembly (4) is arranged at the air outlet (102) of the injection shell (1).
2. The gas injector according to claim 1, characterized in that an annular oil groove (122) is provided in the inner wall of the injection housing (1), the annular oil groove (122) connects the first lubrication oil passage (121) and the second lubrication oil passage (221), and the height of the annular oil groove (122) is larger than the heights of the first lubrication oil passage (121) and the second lubrication oil passage (221), respectively.
3. A gas injector according to claim 2, characterized in that a first sealing structure (5) is arranged between the iron core (22) and the injection housing (1), the first sealing structure (5) being arranged at both ends of the annular oil groove (122).
4. A gas injector according to claim 1, characterized in that a second sealing structure (6) is provided between the armature assembly (3) and the core (22).
5. The gas injector of claim 1, wherein the armature assembly (3) comprises an armature body (31) and an armature pin (32), the armature body (31) being disposed at an end of the core (22) facing the gas outlet (102), one end of the armature pin (32) passing through the armature body (31) and extending into the central receiving slot (223), the other end of the armature pin (32) closing the gas outlet (102).
6. The gas injector according to claim 5, characterized in that the armature assembly (3) further comprises an armature damping spring (33), both ends of the armature damping spring (33) being connected to the inner wall of the injection housing (1) and the armature body (31), respectively.
7. The gas injector according to claim 5, characterized in that the armature assembly (3) further comprises a sealing seat (34), the sealing seat (34) being fixedly connected to the other end of the armature rod (32), the sealing seat (34) closing the gas outlet (102).
8. The gas injector of claim 7, wherein the seal seat (34) comprises a first seal (341) and a second seal (342), the first seal (341) being fixedly connected to the other end of the armature pin (32), the second seal (342) being disposed at an end of the first seal (341) facing away from the armature pin (32), the second seal (342) being capable of covering the gas outlet (102).
9. A gas injector according to any of claims 1-8, characterized in that the injector housing (1) comprises an inlet connection (11), an injector upper body (12) and an injector lower body (13), one end of the inlet connection (11) extending into a first end of the injector upper body (12), a second end of the injector upper body (12) extending into the injector lower body (13), the injector upper body (12) being connected with the injector lower body (13) to form a receiving chamber for receiving the coil (21), the iron core (22), the armature assembly (3) and the armature spring (7) being arranged in the injector upper body (12).
10. The gas injector according to claim 9, characterized in that the needle valve assembly (4) comprises a lock nut (41), a needle valve spring seat (42), a needle valve spring (43), a needle valve body (44) and a needle valve core (45), wherein the needle valve body (44) and one end of the lower injector body (13) deviating from the gas inlet joint (11) are fixedly connected, the needle valve spring seat (42) is arranged in the needle valve body (44), a first limit protrusion (441) and a second limit protrusion (442) are arranged in the needle valve body (44), the distance between the first limit protrusion (441) and the injection shell (1) is smaller than the distance between the second limit protrusion (442) and the injection shell (1), the needle valve spring seat (42) is propped against the first limit protrusion (441), one end of the needle valve spring (43) stretches into the needle valve spring seat (42), the other end of the needle valve spring seat (45) is propped against the second limit protrusion (442), and one end of the needle valve core (45) penetrates through the needle valve spring seat (42) and is connected with the lock nut (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311401424.4A CN117329043B (en) | 2023-10-26 | 2023-10-26 | Gas injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311401424.4A CN117329043B (en) | 2023-10-26 | 2023-10-26 | Gas injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117329043A true CN117329043A (en) | 2024-01-02 |
| CN117329043B CN117329043B (en) | 2024-09-17 |
Family
ID=89282939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311401424.4A Active CN117329043B (en) | 2023-10-26 | 2023-10-26 | Gas injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117329043B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111336048A (en) * | 2019-12-09 | 2020-06-26 | 天津大学 | Fuel injector for realizing diesel/natural gas dual-fuel injection |
| CN116044628A (en) * | 2023-01-03 | 2023-05-02 | 哈尔滨工程大学 | An oil lubricated methanol fuel common rail injector |
-
2023
- 2023-10-26 CN CN202311401424.4A patent/CN117329043B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111336048A (en) * | 2019-12-09 | 2020-06-26 | 天津大学 | Fuel injector for realizing diesel/natural gas dual-fuel injection |
| CN116044628A (en) * | 2023-01-03 | 2023-05-02 | 哈尔滨工程大学 | An oil lubricated methanol fuel common rail injector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117329043B (en) | 2024-09-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6679475B2 (en) | Pressure control valve | |
| KR101930466B1 (en) | Variable force solenoid valve | |
| KR19990067116A (en) | Compact Injector Armature Valve Assembly | |
| KR20230031906A (en) | Gas injectors with reduced wear | |
| JP5262972B2 (en) | Fuel injection valve | |
| KR100202218B1 (en) | Electromagnetically operated fuel-injection valve | |
| CN111373341A (en) | Metering valve and injection pump unit for controlling a gaseous medium | |
| CN117329043B (en) | Gas injector | |
| CN107208593A (en) | Fuelinjection nozzle | |
| KR20070037612A (en) | Fuel injection valve | |
| CN208364852U (en) | A kind of two-bit triplet solenoid valve | |
| JP2009127446A (en) | Fuel injection valve | |
| JP3144136B2 (en) | Three-way solenoid valve | |
| US20070113904A1 (en) | High-pressure fuel pump | |
| CN217481994U (en) | Electromagnetic valve | |
| US11591994B2 (en) | Fuel injection device | |
| CN102108929A (en) | Improved fuel injection system and armature housing | |
| CN215256554U (en) | Valve assembly and oil injector | |
| KR20060122974A (en) | Seal structure of the fuel passage and fuel injection valve having the seal structure | |
| CN106050508B (en) | Valve assembly with particle retainer element and fluid injection valve | |
| CN110906042A (en) | Electromagnetic valve | |
| CN221442717U (en) | Fuel injector | |
| JP2006057620A (en) | Fuel injection valve and method for sealing fuel injection valve | |
| CN211950714U (en) | Oil injector for high-pressure common rail system | |
| CN217559147U (en) | Electromagnetic valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |