CN201521383U - Hole-type fuel injection nozzle of diesel engine - Google Patents
Hole-type fuel injection nozzle of diesel engine Download PDFInfo
- Publication number
- CN201521383U CN201521383U CN2009201979555U CN200920197955U CN201521383U CN 201521383 U CN201521383 U CN 201521383U CN 2009201979555 U CN2009201979555 U CN 2009201979555U CN 200920197955 U CN200920197955 U CN 200920197955U CN 201521383 U CN201521383 U CN 201521383U
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- CN
- China
- Prior art keywords
- needle valve
- needle
- fuel injection
- injection nozzle
- valve
- 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.)
- Expired - Fee Related
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- Fuel-Injection Apparatus (AREA)
Abstract
The utility model relates to a fuel injection nozzle, particularly to a hole-type fuel injection nozzle of a diesel engine. The fuel injection nozzle comprises a needle valve body and a needle valve arranged in the needle valve body, wherein the needle valve comprises a needle valve guidance cylinder; a spiral groove is formed on the needle valve guidance cylinder; and the inlet of the spiral groove is positioned at one end of the needle valve guidance cylinder, which is near to a pressure chamber of the needle valve body. Since in the utility model, the spiral groove is formed on the needle valve guidance cylinder, and the needle valve keeps rotating around the axis of the needle valve when opened under the action of pressure oil or in the seating process after the fuel injection, the seal conical surface can conduct self-cleaning, carbon is effectively prevented from depositing on the seal conical surface, good spraying seal performance is kept, and the operation performance of the fuel injection nozzle is improved and the operation life thereof is prolonged.
Description
Technical field
The utility model relates to a kind of oil nozzle, relates in particular to a kind of diesel engine hole type nozzle.
Background technique
Be applied at present on the diesel engine oil nozzle as shown in Figure 1, generally comprise needle-valve body and be arranged at needle-valve in the needle-valve body.It is the needle-valve slide-and-guide that the top of valve body cooperates the cylndrical surface, and a sealing cone is arranged at the bottom, the pressure chamber of annular space, middle part for communicating with oil input channel, and the bottom of sealing cone is the pressure chamber related with spray orifice.Usually the guide cylinder of injector valve is smooth, forms the sealing cone carbon distribution through regular meeting at work, thereby has influenced the performance and the life-span of oil nozzle.
Summary of the invention
In order to solve the above problems, the purpose of this utility model provides a kind of favorable working performance and long diesel engine hole type nozzle of life-span.。
To achieve the above object, the utility model has adopted following technological scheme: a kind of diesel engine hole type nozzle, comprise needle-valve body and be arranged at the interior needle-valve of needle-valve body, described needle-valve comprises the needle-valve guide cylinder, be provided with spiral chute on described needle-valve guide cylinder, described spiral fluted inlet is on the end of needle-valve guide cylinder near the pressure chamber of needle-valve body.
Owing on the needle-valve guide cylinder, be provided with spiral chute at the utility model, in the process that needle-valve is opened under the effect of pressure oil or end of injection is taken a seat, needle-valve is all the time around self axis rotation, thereby to sealing cone generation self-cleaning action, effectively prevented the sealing cone carbon deposit, kept good spraying sealability, thereby improved the service behaviour of oil nozzle and prolonged operating life.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structural representation of needle-valve 1 among Fig. 1.
Embodiment
Below in conjunction with accompanying drawing 1-2 embodiment of the present utility model is made a detailed explanation.
Embodiment: a kind of diesel engine hole type nozzle, comprise needle-valve body 2 and the needle-valve 1 that is arranged in the needle-valve body 2, described needle-valve 1 comprises needle-valve guide cylinder 5, be provided with spiral chute 3 on described needle-valve guide cylinder 5, the import 4 of described spiral chute 3 is on the end of needle-valve guide cylinder 5 near the pressure chamber 6 of needle-valve body 2.
Claims (1)
1. diesel engine hole type nozzle, comprise needle-valve body (2) and be arranged at the interior needle-valve (1) of needle-valve body (2), described needle-valve (1) comprises needle-valve guide cylinder (5), it is characterized in that, be provided with spiral chute (3) on described needle-valve guide cylinder (5), the import (4) of described spiral chute (3) is on the end of needle-valve guide cylinder (5) near the pressure chamber (6) of needle-valve body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201979555U CN201521383U (en) | 2009-09-27 | 2009-09-27 | Hole-type fuel injection nozzle of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201979555U CN201521383U (en) | 2009-09-27 | 2009-09-27 | Hole-type fuel injection nozzle of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201521383U true CN201521383U (en) | 2010-07-07 |
Family
ID=42507560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201979555U Expired - Fee Related CN201521383U (en) | 2009-09-27 | 2009-09-27 | Hole-type fuel injection nozzle of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201521383U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632487A (en) * | 2015-02-06 | 2015-05-20 | 中国重汽集团重庆燃油喷射系统有限公司 | Oil nozzle with spiral groove structure |
| CN106150817A (en) * | 2015-05-11 | 2016-11-23 | 朱海燕 | Hybrid power automobile |
-
2009
- 2009-09-27 CN CN2009201979555U patent/CN201521383U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632487A (en) * | 2015-02-06 | 2015-05-20 | 中国重汽集团重庆燃油喷射系统有限公司 | Oil nozzle with spiral groove structure |
| CN106150817A (en) * | 2015-05-11 | 2016-11-23 | 朱海燕 | Hybrid power automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100707 Termination date: 20120927 |