CN206860332U - Fuel injector armature motion high stability structure - Google Patents
Fuel injector armature motion high stability structure Download PDFInfo
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- CN206860332U CN206860332U CN201720798981.8U CN201720798981U CN206860332U CN 206860332 U CN206860332 U CN 206860332U CN 201720798981 U CN201720798981 U CN 201720798981U CN 206860332 U CN206860332 U CN 206860332U
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- armature
- return spring
- spring
- spacing
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Abstract
The utility model discloses a kind of fuel injector armature motion high stability structure, including the armature in the iron core in electromagnetic mechanism and valve body mechanism, return spring is pressed between the spring base hole of spacing adjustment pipe and armature in iron core core bore, the bottom of spacing adjustment pipe is up big and down small two-stage multi-diameter shaft pipe structure, the top matching of return spring is set on the small body of subordinate of spacing adjustment pipe and realizes that radial direction is spacing, and the top axial of return spring is limited at the axle rank between upper and lower level body；The spring base hole of armature is up big and down small two-stage ladder hole body structure, and the bottom matching of return spring is plugged in subordinate's aperture body of spring base hole and realizes that radial direction is spacing, and the lower end axial limiting of return spring is in the bottom of the small hole body of subordinate.The utility model solves armature open and close instability problem caused by return spring is rebuffed because of compression generation radial deformation, improves the precision of fuel injector dynamic measuring.
Description
Technical field
Electric-controlled fuel injector internal structure is the utility model is related to, specially a kind of fuel injector armature motion high stability knot
Structure.
Background technology
Fuel injector is applied to pulsating liquid delicate metering and atomization, such as engine fuel metering and Combustion System, fuel injector
Receive the fuel injection pulse signal that ECU (electronic control unit) is sent, accurately control fuel injection amount.
The structure of fuel injector is mainly made up of electromagnetic mechanism, valve body mechanism, atomising mechanism, metrological service and runner mechanism.
The response of fuel injector oil spout fast and stable is an important technology index, be embodied in armature and iron core adhesive (oil spout) with
On the action stability for leaving iron core return (stopping oil spout).
Being pressed pretension in the structure of traditional electromagnetic mechanism and valve body mechanism, between iron core and armature has compression spring, compresses
The upper and lower end axial limiting of spring spacing adjustment pipe and spring base hole bottom on armature top in iron core core bore, due to compression
Spring does not have radial positioning, and resulting from the acting force of the spring on armature can be such that compression spring deviates axially and (touching armature of being rebuffed
The core bore inwall of spring base hole inwall or iron core), this is the major reason for causing armature reaction unstability.
Utility model content
In view of the shortcomings of the prior art, technical problem to be solved in the utility model is to propose a kind of armature that improves to move
Make the fuel injector armature motion high stability structure of stability.
The fuel injector armature motion high stability structure of above-mentioned technical problem is can solve the problem that, its technical scheme includes electromagnetic motor
The armature in iron core and valve body mechanism in structure, press between the spring base hole of spacing adjustment pipe and armature in the iron core core bore
Equipped with return spring, except that the bottom of the spacing adjustment pipe is up big and down small two-stage multi-diameter shaft pipe structure, institute
State return spring top matching be set in it is spacing adjustment pipe the small body of subordinate on and realize radially it is spacing, return spring it is upper
Axial limiting is held at the axle rank between upper and lower level body；The spring base hole of the armature is up big and down small two-stage shoulder hole
Body structure, the bottom matching of return spring are plugged in subordinate's aperture body of spring base hole and realize radially spacing, return spring
Lower end axial limiting in the bottom of the small hole body of subordinate.
The beneficial effects of the utility model：
The utility model fuel injector armature motion high stability structure passes through with radially spacing spacing adjustment Guan Yuxian
Iron constrains the radial position of return spring, solves the problems, such as existing fuel injector without radial constraint, thoroughly solves return bullet
The problem of armature open and close is unstable caused by spring is rebuffed because of compression generation radial deformation, improves fuel injector dynamic measuring
Precision.
Brief description of the drawings
Fig. 1 is a kind of structural representation of embodiment of the utility model.
Fig. 2 is the partial enlarged drawing at A in Fig. 1 embodiments.
Figure number identifies：1st, iron core；2nd, armature；3rd, return spring；4th, spacing adjustment pipe；5th, fuel injector；6th, ball valve；7th, valve
Seat；8th, plunger tube.
Embodiment
Illustrated embodiment is described further to the technical solution of the utility model below in conjunction with the accompanying drawings.
The utility model fuel injector armature motion high stability structure, its technical scheme are included at the nozzle of fuel injector 5
Valve body mechanism and valve body mechanism top in plunger tube 8 are the electromagnetic mechanism inside fuel injector 5, are provided with the electromagnetic mechanism
Iron core 1, armature 2 is provided with the valve body mechanism, limited location adjustment pipe 4, the spacing adjustment pipe are pressed in the core bore of iron core 1
Being pressed pretension between 4 and the spring base hole on the top of armature 2 has return spring 3, and ball valve 6 is fixed on the bottom of armature 2, in return bullet
Under the elastic force effect of spring 3, ball valve 6 is pressed and sealed the circular cone fuel feed hole opened up in lower seat 7 (in plunger tube 8) by armature 2
It is interior, as shown in Figure 1.
The bottom drawing and forming of the spacing adjustment pipe 4 is up big and down small two-stage multi-diameter shaft pipe structure, the armature 2
Spring base hole drill as up big and down small two-stage ladder hole body structure, the top matching of the return spring 3 is set in spacing
Adjust pipe 4 the small body of subordinate on and be able to radially it is spacing, the top axial of return spring 3 is limited between upper and lower level body
Axle rank at, the matching of the bottom of return spring 3 is plugged in subordinate's aperture body of spring base hole and is able to radially spacing, return bullet
The lower end axial limiting of spring 3 is in the bottom of the small hole body of subordinate.
Claims (1)
1. fuel injector armature motion high stability structure, including the armature in iron core (1) and valve body mechanism in electromagnetic mechanism
(2) return spring (3), is pressed between the spacing adjustment pipe (4) in iron core (1) core bore and the spring base hole of armature (2),
It is characterized in that：The bottom of the spacing adjustment pipe (4) is up big and down small two-stage multi-diameter shaft pipe structure, the return spring
(3) top matching is set in it is spacing adjustment pipe (4) the small body of subordinate on and realize radially it is spacing, return spring (3) it is upper
Axial limiting is held at the axle rank between upper and lower level body；The spring base hole of the armature (2) is up big and down small two-stage ladder
Hole body structure, the bottom matching of return spring (3) are plugged in subordinate's aperture body of spring base hole and realize radially spacing, return
The lower end axial limiting of spring (3) is in the bottom of the small hole body of subordinate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720798981.8U CN206860332U (en) | 2017-07-03 | 2017-07-03 | Fuel injector armature motion high stability structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720798981.8U CN206860332U (en) | 2017-07-03 | 2017-07-03 | Fuel injector armature motion high stability structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206860332U true CN206860332U (en) | 2018-01-09 |
Family
ID=60830110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720798981.8U Active CN206860332U (en) | 2017-07-03 | 2017-07-03 | Fuel injector armature motion high stability structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206860332U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143451A (en) * | 2017-07-03 | 2017-09-08 | 东莞市盈森汽车电喷科技有限公司 | Fuel injector armature motion high stability structure |
-
2017
- 2017-07-03 CN CN201720798981.8U patent/CN206860332U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143451A (en) * | 2017-07-03 | 2017-09-08 | 东莞市盈森汽车电喷科技有限公司 | Fuel injector armature motion high stability structure |
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