CN203374414U - Fuel oil ejector and fuel oil ejection nozzle thereof - Google Patents
Fuel oil ejector and fuel oil ejection nozzle thereof Download PDFInfo
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- CN203374414U CN203374414U CN201320468956.5U CN201320468956U CN203374414U CN 203374414 U CN203374414 U CN 203374414U CN 201320468956 U CN201320468956 U CN 201320468956U CN 203374414 U CN203374414 U CN 203374414U
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- fuel oil
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- nozzle opening
- nozzle
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Abstract
The utility model relates to a fuel oil ejector and a fuel oil ejection nozzle of the fuel oil ejector. K-coefficient fuel oil ejection holes and Ks-coefficient fuel oil ejection holes are formed in the end portion of an ejection hole of the fuel oil ejection nozzle, wherein the K-coefficient fuel oil ejection holes and the Ks-coefficient fuel oil ejection holes are located in contour planes respectively, and the counter plane where the K-coefficient fuel oil ejection holes are located is different from the counter plane where the Ks-coefficient fuel oil ejection holes are located in height. By means of the fuel oil ejector and the fuel oil ejection nozzle of the fuel oil ejector, the problem that grain wear or carbon deposition or the cavitation effect is caused because a single ejection hole is adopted in the prior art is solved.
Description
Technical field
The utility model relates to a kind of fuel injector and nozzle thereof, especially about a kind of, has than fuel injector and the nozzle thereof of light grains wearing and tearing and carbon distribution simultaneously.
Background technique
In internal-combustion engine, the overall performance of the oil spout effect of fuel injector meeting combustion motor produces larger impact.The oil spout effect of fuel injector is subject to the impact of a plurality of factors, and wherein, the spray orifice type arranged on the nozzle of fuel injector is also an important aspect that affects.In known technology, comprise K type fuel injector and Ks type fuel injector, wherein on K type fuel injector, be provided with the k-factor spray orifice, and be provided with Ks coefficient spray orifice on Ks type fuel injector, these two kinds of spray orifices respectively have pluses and minuses.The structure shape of k-factor spray orifice refers to shown in Fig. 3, and its oil spout speed is high, and spray angle is little, favourable to the discharge of soot and NOx.The k-factor spray orifice is because self-characteristic is limited to the fluid power degree of grinding, and fluid power grinds can be very not high, and in using process, spray orifice can form cavitation erosion, and the spray orifice carbon distribution is difficult to form.But, more responsive for the particle in Environmental Conditions, spray orifice abrasion of particles phenomenon easily occurs, thereby affects performance.The shape of Ks coefficient spray orifice refers to shown in Fig. 4, and Ks coefficient spray orifice is optimized flow field for specific injection diameter, and spray orifice is without cavitation effect, and its injection rate is higher, and atomizing effect is better, and the discharge of combustion motor performance is more favourable.In addition, Ks coefficient spray orifice is owing to grinding insensitive to abrasion of particles in follow-up use through higher fluid power in course of working.But the Ks coefficient spray orifice that the small aperture injection rate is higher is more responsive to carbon distribution, easily forms carbon distribution, affects performance.
In the situation that fuel oil quality is higher, the user can select k-factor fuel injector or Ks coefficient fuel injector according to the needs of oneself.Yet, if fuel oil quality is not high, select any single fuel injector all to be limited to its shortcoming, advantage that can't comprehensive many types of fuel injector, thus there is lighter abrasion of particles and carbon distribution simultaneously.
The model utility content
In order to make up the deficiencies in the prior art, the utility model provides a kind of fuel injector and nozzle thereof that can simultaneously have lighter abrasion of particles and carbon distribution.
According to an aspect of the present utility model, a kind of oil nozzle is provided, it has the spray-hole end, and described spray-hole end has k-factor nozzle opening and Ks coefficient nozzle opening.
The utility model also has following characteristics, and described k-factor nozzle opening and Ks coefficient nozzle opening all form jet in described spray-hole end.
The utility model also has following characteristics, and described k-factor nozzle opening and Ks coefficient nozzle opening all are arranged on the conical surface of described spray-hole end.
The utility model also has following characteristics, and described k-factor nozzle opening has a plurality of, and its jet is formed on the contour plane of described spray-hole end.
The utility model also has following characteristics, and described Ks coefficient nozzle opening has a plurality of, and its jet is formed on the contour plane of described spray-hole end.
The utility model also has following characteristics, and described k-factor nozzle opening and Ks coefficient nozzle opening all have a plurality of, and its jet interval is formed on the contour plane of described spray-hole end.
The utility model also has following characteristics, described k-factor nozzle opening has a plurality of, its jet is formed on the contour plane of described spray-hole end, Ks coefficient jet has a plurality of, its jet is formed on the contour plane of described spray-hole end, and the top of the more close described spray-hole of the jet end of Ks coefficient nozzle opening.
The utility model also has following characteristics, described k-factor nozzle opening has a plurality of, its jet is formed on the contour plane of described spray-hole end, Ks coefficient jet has a plurality of, its jet is formed on the contour plane of described spray-hole end, and the top of the more close described spray-hole of the jet of k-factor nozzle opening end.
On the other hand of the present utility model, a kind of fuel injector is provided, it is characterized in that: comprise ejector body and foregoing oil nozzle.
In addition, adopt the technical solution of the utility model, fuel injector and oil nozzle can comprehensively have lighter abrasion of particles and carbon distribution.
The accompanying drawing explanation
From detailed description described later can comprehend aforementioned and other aspect of the present utility model in conjunction with following accompanying drawing.In the accompanying drawings:
Fig. 1 has schematically indicated the structural drawing of the utility model fuel injector.
Fig. 2 has schematically indicated the structural drawing of the utility model oil nozzle.
Fig. 3 has schematically indicated the structural drawing of k-factor spray orifice in the prior art.
Fig. 4 has schematically indicated the structural drawing of Ks coefficient spray orifice in the prior art.
Embodiment
Exemplary embodiment of the present utility model is described with reference to the accompanying drawings.It should be noted that, in each accompanying drawing, identical reference character represents function and/or identical element or the parts of structure.
Please, in conjunction with shown in Fig. 1 and Fig. 2, the spray-hole end 21 of oil nozzle 20 of the present utility model is outstanding forward, the outside conical surface 22 that forms.In the front end mineralization pressure chamber 291 of cavity volume 29, form oil nozzle body tangent plane 23 on the internal face of described pressure chamber 291.The front end that is contained in the needle-valve 30 in cavity volume has certain tapering, and this tapering is different from the tapering of the internal face of described pressure chamber 291.The front end of described needle-valve 30 extends in described pressure chamber 291, and forms sealing surface by the close contact with described oil nozzle body tangent plane 23.Have the pressure-bearing conical surface on needle-valve 30 above described sealing surface, this pressure-bearing conical surface bears the fuel pressure entered in cavity volume 29, thereby has the trend that upwards promotes needle-valve 30.
Please continue to consult shown in Fig. 2, be provided with a plurality of Ks coefficient nozzle openings 211 that run through aforementioned conical surface 22 and aforementioned pressure chamber 291 on the spray-hole end 21 of oil nozzle 20, a plurality of jets 2111 of corresponding formation on described conical surface 22, described a plurality of Ks coefficient nozzle opening 211 is uniformly distributed, and described a plurality of jets 2111 are formed on the contour plane on spray-hole end 21.The position on more close its top on the spray-hole end 21 of oil nozzle 20, also be provided with a plurality of k-factor nozzle openings 212 that run through aforementioned conical surface 22 and aforementioned pressure chamber 291 simultaneously, a plurality of jets 2121 of corresponding formation on described conical surface 22, described a plurality of k-factor nozzle opening 212 is uniformly distributed, and a plurality of jets 2121 are formed on the contour plane of spray-hole end 21.
The description of above-described embodiment only provides a kind of possibility of implementing the utility model technology, if k-factor jet 2121 is arranged at than Ks coefficient jet 2111 further from also passable on the contour plane of described spray-hole end 21.Simultaneously, if k-factor jet 2121 and Ks coefficient jet 2111 is also passable on same contour plane, preferably its interval is arranged.
When processing oil nozzle 20 of the present utility model or fuel injector 100, at first, processing Ks coefficient nozzle opening 211, its processing technique can be used processing method of the prior art.By re-using fluid power after electric discharge machining, grind.Then, reprocessing k-factor nozzle opening 212, its processing technique also can be used processing method of the prior art, the mode of grinding by re-using fluid power after electric discharge machining.Certainly, in the process of carrying out electric discharge machining and fluid power grinding, for dissimilar nozzle opening processing, need to be adjusted for the professional and technical personnel and need to do not explained in this patent.Certainly, oil nozzle 20 of the present utility model and fuel injector 100 add also can adopt man-hour first k-factor nozzle opening again the order of KS coefficient nozzle opening processed.
In use, the fuel oil pressurizeed through high potential assembly enters described cavity volume 29, the rising of pressure makes and acts on the described pressure increase added on the conical surface of holding, when above-mentioned pressure arrives to a certain degree, can impel described needle-valve 30 to open, high pressure fuel carries out in pressure chamber 291, then by described Ks coefficient nozzle opening 211 and k-factor nozzle opening 212, sprays and enters firing chamber.Owing to having adopted Ks coefficient nozzle opening and k-factor nozzle opening in the utility model simultaneously, so possessed the characteristics of two types of spray orifices simultaneously, reduced the susceptibility of abrasion of particles and carbon distribution, improved the robustness of product Environmental Conditions.In addition, the layout that increases nozzle hole number that is integrated into of these two types of spray orifices has been brought possibility, can further optimize atomization and improve engine performance.
Although describe specific implementations of the present utility model here in detail, they only provide for the purpose of explaining, and should not think that they are construed as limiting scope of the present utility model.Under the prerequisite that does not break away from the utility model spirit and scope, various replacements, change and transformation can be conceived out.
Claims (10)
1. an oil nozzle, is characterized in that, its front end has the spray-hole end, and described spray-hole end is provided with k-factor nozzle opening and Ks coefficient nozzle opening.
2. oil nozzle as claimed in claim 1, is characterized in that, described k-factor nozzle opening and Ks coefficient nozzle opening all form jet in described spray-hole end.
3. oil nozzle as claimed in claim 2, is characterized in that, described k-factor nozzle opening and Ks coefficient nozzle opening all are arranged on the conical surface of described spray-hole end.
4. oil nozzle as claimed in claim 3, is characterized in that, described k-factor nozzle opening has a plurality of, and its jet is formed on the contour plane of described spray-hole end.
5. oil nozzle as claimed in claim 3, is characterized in that, described Ks coefficient nozzle opening has a plurality of, and its jet is formed on the contour plane of described spray-hole end.
6. oil nozzle as claimed in claim 3, is characterized in that, described k-factor nozzle opening and Ks coefficient nozzle opening all have a plurality of, and its jet interval is formed on the contour plane of described spray-hole end.
7. oil nozzle as claimed in claim 3, it is characterized in that, described k-factor nozzle opening has a plurality of, its jet is formed on the contour plane of described spray-hole end, Ks coefficient jet has a plurality of, its jet is formed on the contour plane of described spray-hole end, and the top of the more close described spray-hole of the jet end of Ks coefficient nozzle opening.
8. oil nozzle as claimed in claim 3, it is characterized in that, described k-factor nozzle opening has a plurality of, its jet is formed on the contour plane of described spray-hole end, Ks coefficient jet has a plurality of, its jet is formed on the contour plane of described spray-hole end, and the top of the more close described spray-hole of the jet of k-factor nozzle opening end.
9. a fuel injector, is characterized in that, comprises ejector body and oil nozzle as described as any one in claim 1-8.
10. fuel injector as claimed in claim 9, is characterized in that, the conical jet bore ends of described oil nozzle protrudes from described ejector body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320468956.5U CN203374414U (en) | 2013-08-02 | 2013-08-02 | Fuel oil ejector and fuel oil ejection nozzle thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320468956.5U CN203374414U (en) | 2013-08-02 | 2013-08-02 | Fuel oil ejector and fuel oil ejection nozzle thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203374414U true CN203374414U (en) | 2014-01-01 |
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ID=49836946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320468956.5U Expired - Lifetime CN203374414U (en) | 2013-08-02 | 2013-08-02 | Fuel oil ejector and fuel oil ejection nozzle thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203374414U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929837A (en) * | 2015-05-24 | 2015-09-23 | 北京工业大学 | Oil nozzle for spraying diesel oil in mixed manner of gas state and liquid state |
| CN105332840A (en) * | 2015-10-31 | 2016-02-17 | 北京工业大学 | Method for achieving pre-mixing burning through cavitation jet strengthening |
| CN114353120A (en) * | 2021-12-17 | 2022-04-15 | 中国北方发动机研究所(天津) | Camber surface diversion type combustion chamber suitable for multi-aperture nozzle |
-
2013
- 2013-08-02 CN CN201320468956.5U patent/CN203374414U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929837A (en) * | 2015-05-24 | 2015-09-23 | 北京工业大学 | Oil nozzle for spraying diesel oil in mixed manner of gas state and liquid state |
| CN104929837B (en) * | 2015-05-24 | 2017-08-11 | 北京工业大学 | A kind of diesel oil injection nozzle of gas-liquid binary states mixing jetting |
| CN105332840A (en) * | 2015-10-31 | 2016-02-17 | 北京工业大学 | Method for achieving pre-mixing burning through cavitation jet strengthening |
| CN114353120A (en) * | 2021-12-17 | 2022-04-15 | 中国北方发动机研究所(天津) | Camber surface diversion type combustion chamber suitable for multi-aperture nozzle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140101 |