CN205663550U - Needle valve component for electric fuel injector - Google Patents
Needle valve component for electric fuel injector Download PDFInfo
- Publication number
- CN205663550U CN205663550U CN201620529169.0U CN201620529169U CN205663550U CN 205663550 U CN205663550 U CN 205663550U CN 201620529169 U CN201620529169 U CN 201620529169U CN 205663550 U CN205663550 U CN 205663550U
- Authority
- CN
- China
- Prior art keywords
- post
- combined cover
- needle
- oil pressure
- spacer
- 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 title claims abstract description 10
- 125000006850 spacer group Chemical group 0.000 claims description 15
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
The utility model provides a needle valve component for electric fuel injector which improves and lies in: needle valve component comprises nozzle valve, combination cover, oil pressure piston and regulation pad, nozzle valve and oil pressure piston are through combining the cover to connect, adjust to fill up the position department that sets up in combining the cover between nozzle valve and the oil pressure piston, the utility model discloses an useful technological effect is: can effectively reduce needle valve component's the processing degree of difficulty.
Description
Technical field
This utility model relates to a kind of fuel injector, particularly relates to a kind of electric-controlled fuel injector needle valve assembly.
Background technology
Needle-valve is the vitals in fuel injector, in order to ensure fuel injector quality, it is necessary to assure needle-valve has higher adding
Work precision；When needle-valve uses monolithic construction, requiring the highest to process technology, difficulty is relatively big, then typically adopts in prior art
With the needle-valve of split-type structural, the needle valve assembly being i.e. made up of needle-valve body, combined cover and oil pressure plunger, needle-valve body and oil pressure post
Plug is connected as one by combined cover, and such benefit is, needle-valve body, combined cover and oil pressure plunger are the most individually processed, processing
Difficulty is relatively low, and machining accuracy is easier to ensure；There is the problem that in existing needle valve assembly, needle-valve body and oil pressure plunger are equal
Be slidably matched with combined cover, and the end face of two connection posts on oil pressure plunger and needle-valve body contact with each other, by oil pressure plunger and
The total length of needle-valve body determines needle-valve length, and this is just to needle-valve body, combined cover and oil pressure plunger and corresponding connect the axial of post
Length proposes higher requirement, is unfavorable for processing.
Utility model content
For the problem in background technology, the utility model proposes a kind of electric-controlled fuel injector needle valve assembly, it improves
It is: described needle valve assembly is made up of needle-valve body, combined cover, oil pressure plunger and spacer；Oil pressure plunger lower end is provided with first
Connecting post, on oil pressure plunger lower surface, the first structure connected around post forms First terrace, and combined cover upper end is socketed in
First connects outside post, leaves gap between combined cover upper end and First terrace, and combined cover and first connects post interference fit；Pin
Valve body upper end is provided with the second connection post, and on needle-valve body upper surface, the second structure connected around post forms second step face,
Combined cover lower end is socketed in outside the second connection post, leaves gap, combined cover and second between combined cover lower end and second step face
Connect post interference fit；In spacer is arranged on combined cover, the first connection post and second connects the position between post, and first even
Connecing post lower surface to contact with spacer upper surface, second connects post upper surface contacts with spacer lower surface.
Principle of the present utility model is: combined cover is connected with needle-valve body and oil pressure plunger by interference fit, is determining pin
During valve length, measure needle-valve body and the length of oil pressure plunger the most respectively, then according to needle-valve design length, select thickness suitable
Spacer, need to guarantee needle-valve body, combined cover and the length accuracy of oil pressure plunger three compared to prior art simultaneously,
After using this utility model, only need to ensure the dimensional accuracy of spacer, just needle-valve length accurately can be regulated, difficulty of processing
Lower.
Advantageous Effects of the present utility model is: can effectively reduce the difficulty of processing of needle valve assembly.
Accompanying drawing explanation
Fig. 1, structural representation of the present utility model；
In figure, the title corresponding to each labelling is respectively as follows: needle-valve body 1, combined cover 2, oil pressure plunger 3, spacer 4.
Detailed description of the invention
A kind of electric-controlled fuel injector needle valve assembly, it is improved by: described needle valve assembly is by needle-valve body 1, combined cover 2, oil
Hydraulic plunger 3 and spacer 4 form；Oil pressure plunger 3 lower end is provided with the first connection post, and on oil pressure plunger 3 lower surface, first connects
Structure around post forms First terrace, and combined cover 2 upper end is socketed in outside the first connection post, combined cover 2 upper end and first
Leaving gap between step surface, combined cover 2 is connected post interference fit with first；Needle-valve body 1 upper end is provided with the second connection post, pin
On valve body 1 upper surface, the second structure connected around post forms second step face, and combined cover 2 lower end is socketed in the second connection post
Outward, leaving gap between combined cover 2 lower end and second step face, combined cover 2 is connected post interference fit with second；Spacer 4 sets
Putting first connection post and second in combined cover 2 and connect the position between post, first connects post lower surface and spacer 4 upper end
Face contacts, and second connects post upper surface contacts with spacer 4 lower surface.
Claims (1)
1. an electric-controlled fuel injector needle valve assembly, it is characterised in that: described needle valve assembly by needle-valve body (1), combined cover (2),
Oil pressure plunger (3) and spacer (4) composition；Oil pressure plunger (3) lower end is provided with the first connection post, oil pressure plunger (3) lower surface
Upper first structure connected around post forms First terrace, and combined cover (2) upper end is socketed in outside the first connection post, combined cover
(2) leaving gap between upper end and First terrace, combined cover (2) is connected post interference fit with first；Needle-valve body (1) upper end sets
Being equipped with the second connection post, on needle-valve body (1) upper surface, the second structure connected around post forms second step face, combined cover
(2) lower end is socketed in outside the second connection post, leaves gap between combined cover (2) lower end and second step face, combined cover (2) and the
Two connect post interference fit；In spacer (4) is arranged on combined cover (2), the first connection post and second connects the position between post
Place, first connects post lower surface contacts with spacer (4) upper surface, and second connects post upper surface connects with spacer (4) lower surface
Touch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620529169.0U CN205663550U (en) | 2016-06-03 | 2016-06-03 | Needle valve component for electric fuel injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620529169.0U CN205663550U (en) | 2016-06-03 | 2016-06-03 | Needle valve component for electric fuel injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205663550U true CN205663550U (en) | 2016-10-26 |
Family
ID=57158458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620529169.0U Active CN205663550U (en) | 2016-06-03 | 2016-06-03 | Needle valve component for electric fuel injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205663550U (en) |
-
2016
- 2016-06-03 CN CN201620529169.0U patent/CN205663550U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103433704B (en) | A kind of production technology of precise pressure-reducing valve main valve plug | |
| CN104520576B (en) | Fuelinjection nozzle | |
| CN205663550U (en) | Needle valve component for electric fuel injector | |
| CN104214156A (en) | High-flow ultrahigh-pressure directly operated type proportional overflow valve | |
| CN203560461U (en) | Conical valve sealing pressure-measuring joint | |
| CN205663551U (en) | There is not static oil return needle valve component for electric fuel injector | |
| CN202922250U (en) | Elastic pin locking structure | |
| CN204565349U (en) | Gear part Shaving Process fixture | |
| CN203900534U (en) | Centering fixture for impeller | |
| CN201357181Y (en) | Hydraulic system of straightening machine for straightening shaft components | |
| CN208474226U (en) | A kind of HGC control servo valve platform for smart bundle machine | |
| CN203023610U (en) | Combined rod piece | |
| CN203585354U (en) | Sealing structure of high-pressure injection needle valve hole | |
| CN102979653B (en) | Marine oil pressing valve matching part | |
| CN202187876U (en) | High-efficient constant output plunger pump | |
| CN201836382U (en) | Thermoplastic polyurethane hydraulic seal ring | |
| CN204504874U (en) | Floor-type milling & boring machine ram deflection compensation mechanism | |
| CN205087855U (en) | Hydraulic jack | |
| CN205798378U (en) | Mould adapter sleeve structure-improved | |
| CN204920824U (en) | Oil drilling tool is with sealed helicitic texture in face of cylinder | |
| CN208330604U (en) | A kind of fuel injector | |
| CN203594639U (en) | Novel buffering pressure stabilizing valve used for hydraulic motor | |
| CN106014733A (en) | Engine oil return pipe joint assembly | |
| CN203131045U (en) | Fast restart shutdown valve assembly | |
| CN203023630U (en) | Solenoid control valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Pioneer Street wa Yao Gou 400033 Chongqing city Shapingba District No. 78 Patentee after: Heavy Oil High Tech Electronic Fuel Injection System Co.,Ltd. Address before: Pioneer Street wa Yao Gou 400033 Chongqing city Shapingba District No. 78 Patentee before: Heavy oil high tech electronic fuel injection system (Chongqing) Co.,Ltd. Address after: Pioneer Street wa Yao Gou 400033 Chongqing city Shapingba District No. 78 Patentee after: Heavy oil high tech electronic fuel injection system (Chongqing) Co.,Ltd. Address before: Pioneer Street wa Yao Gou 400033 Chongqing city Shapingba District No. 78 Patentee before: CHONGQING FUEL INJECTION SYSTEM CO., LTD. OF CHINA NATIONAL HEAVY DUTY TRUCK Group Corp. |
|
| CP01 | Change in the name or title of a patent holder |