CN202811156U - Diesel injector - Google Patents
Diesel injector Download PDFInfo
- Publication number
- CN202811156U CN202811156U CN 201220407784 CN201220407784U CN202811156U CN 202811156 U CN202811156 U CN 202811156U CN 201220407784 CN201220407784 CN 201220407784 CN 201220407784 U CN201220407784 U CN 201220407784U CN 202811156 U CN202811156 U CN 202811156U
- Authority
- CN
- China
- Prior art keywords
- injector
- oil
- matching parts
- nozzle matching
- diesel
- 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 diesel injector which comprises an injector boy. The upper end of the injector body is provided with an oil hole, an oil inlet pipe connector is installed inside the oil hole, and a filter element is installed inside the oil inlet pipe connector. An inner cavity is formed in the injector body, and a tappet, a pressure adjusting spring and a pressure adjusting gasket are arranged inside the inner cavity from bottom to top in sequence. The lower end of the injector body is connected with injector nozzle matching parts through heel blocks and cap nuts, a group of oil squirt holes are formed in the injector nozzle matching parts, and an injector nozzle sleeve is sleeved outside the injector nozzle matching parts. The diesel injector has the advantages of being simple in structure, and reasonable in design, and the injector nozzle matching parts are provided with a plurality of oil squirt holes, the bore diameters of the oil squirt holes are reduced, the injection pressure of the nozzle end of the injector nozzle matching parts is increased, atomization quality of high pressure oil is improved, injected fuel oil is enabled to be fully contacted with air in a combustor, and therefore combustion efficiency is improved, an emission index is lowered, and the diesel injector has a good oil-saving and emission reduction effect.
Description
Technical field
The utility model relates to a kind of injector assembly, and especially a kind of mechanism of single-cylinder air-cooled diesel engine injector assembly improves, and belongs to the oil sprayer technical field.
Background technique
Oil sprayer is one of vitals of diesel fuel system, can make fuel oil enter the firing chamber with atomize under certain pressure-acting, and fully mixes with air and to be beneficial to oil inflame.On the existing oil sprayer injector nozzle matching parts is set, have several nozzle openings on the injector nozzle matching parts, yet the number of nozzle opening is few, and the aperture is larger, have a strong impact on the atomization quality of high pressure oil, and then reduced its rate of combustion, caused the diesel emission mis-behave, discharge amount can not satisfy the emission request of up-to-date air-cooled single-cylinder diesel engine, therefore in the urgent need to injector assembly is improved.
The model utility content
The purpose of this utility model is: for the problem that above-mentioned prior art exists, propose a kind of simple in structurely, can reduce the diesel injector of exhaust index, oil-saving discharging-reducing.
In order to reach above purpose, diesel injector of the present utility model, comprise body, the upper end of described body is provided with oilhole, be installed into oil connection in the described oilhole, filter core is housed in the inlet connector, be shaped with inner chamber on the described body, from bottom to top be provided with successively tappet, pressure adjusting spring and pressure regulation pad in the described inner chamber, its improvements are, the lower end of described body is connected with injector nozzle matching parts by cushion block, tight cap, is shaped with one group of nozzle opening on the described injector nozzle matching parts, and described injector nozzle matching parts overcoat has fuel injector boss.
It is to be shaped with five nozzle openings on the described injector nozzle matching parts that the utility model further improves.
It is that the diameter of described nozzle opening is φ 0.21mm that the utility model further improves.
The utility model further improves, and the bottom of described tappet and the needle-valve of injector nozzle matching parts touch, and an end of described pressure adjusting spring is connected with the tappet top, and the other end is connected with the adjustment pad.
The utility model further improves, and a side adjacent with oilhole on the described body is shaped with spill port, in the described spill port oil returning pipe joint is set, and described body spill port position is provided with elastic positioning pin.
The utility model has the advantage of: diesel injector of the present utility model is simple in structure, reasonable in design, employing has the injector nozzle matching parts of a plurality of nozzle openings, and reduced the aperture of nozzle opening, increased the jet pressure of injector nozzle matching parts mouth end, improved the atomization quality of high pressure oil, so that the fuel oil that sprays fully contacts with air in the firing chamber, and then improved combustion efficiency, and reduced exhaust index, have preferably oil-saving discharging-reducing effect.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is the utility model embodiment one structural representation.
Fig. 2 is that the H-H of Fig. 1 is to sectional view.
Fig. 3 is that the A of Fig. 1 is to schematic representation.
Among the figure: 1. fuel injector boss, 2. copper backing, 3. tight cap, 4. injector nozzle matching parts, 5. cushion block, 6. tappet, 7. pressure adjusting spring, 8. body is 9. adjusted pad, 10. protective hat, 11. inlet connector, 12. filter cores, 13. resilient keys, 14. oil returning pipe joint, 15. protective hats, 16. oil nozzle heads, 17. oil inlet hole, 18. positioning pin holes, 19. spray orifices.
Embodiment
Embodiment one
The diesel injector of present embodiment, its structure as depicted in figs. 1 and 2, comprise body 8, the upper end of body 8 is provided with oilhole, be installed into oil connection 11 in the oilhole, the inlet connector 11 interior filter cores 12 that arrange, be shaped with inner chamber on the body 8, from bottom to top be provided with successively tappet 6 in the inner chamber, pressure adjusting spring 7 and pressure regulation pad 9, the lower end of body 8 is connected with injector nozzle matching parts 4 by tight cap 3, the oil inlet hole of injector nozzle matching parts 4 is connected by the oilhole of inflow pipeline with body 8, be provided with cushion block 5 between injector nozzle matching parts 4 and the body lower end surface, be shaped with five nozzle openings on the injector nozzle matching parts 4, the diameter of nozzle opening is φ 0.21mm, injector nozzle matching parts 4 overcoats have fuel injector boss 1, be provided with copper backing 2 between fuel injector boss 1 and the tight cap 3, the needle-valve of the bottom of tappet 6 and injector nozzle matching parts 4 touches, one end of pressure adjusting spring 7 is connected with tappet 6 tops, the other end is connected with adjustment pad 9, a side adjacent with oilhole on the body 8 is shaped with spill port, oil returning pipe joint 14 is set in the spill port, and inlet connector 11 and oil returning pipe joint 14 overcoats have protective hat 15, and body oil-hole location place 8 last time is provided with elastic positioning pin 13.
During actual the use, the body 8 of oil sprayer is fixed on the diesel engine by pressing plate, and the elastic positioning pin of oil sprayer is located in the notch of diesel engine to guarantee its setting angle, thereby satisfies better the fuel feeding demand of diesel engine.During work, the high pressure oil that Injection Pump extrudes is through high-pressure oil pipe, inlet connector 11 enters oil sprayer, filter core 12 is with the Impurity removal in the high pressure oil in inlet connector 11, then enter injector nozzle matching parts 4 by inflow pipeline, at injector nozzle matching parts 4 inner high voltage oil under the injection starting pressure effect, enter firing chamber (high pressure oil sprays through spray orifice according to angle shown in Figure 3) through nozzle opening and mix the fuel combination that formation is beneficial to burning with air, and unnecessary high pressure oil infiltrates in the inner chamber of body 8, hole through adjusting on the pad 9 enters oil returning tube, at last by oil returning pipe joint 14, return tube flows out oil sprayer.
In addition to the implementation, the utility model also can have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, drop on the protection domain of the utility model requirement.
Claims (5)
1. diesel injector, comprise body, the upper end of described body is provided with oilhole, be installed into oil connection in the described oilhole, filter core is housed in the inlet connector, be shaped with inner chamber on the described body, from bottom to top be provided with successively tappet, pressure adjusting spring and pressure regulation pad in the described inner chamber, it is characterized in that: the lower end of described body is connected with injector nozzle matching parts by cushion block, tight cap, is shaped with one group of nozzle opening on the described injector nozzle matching parts, and described injector nozzle matching parts overcoat has fuel injector boss.
2. diesel injector according to claim 1 is characterized in that: be shaped with five nozzle openings on the described injector nozzle matching parts.
3. diesel injector according to claim 2, it is characterized in that: the diameter of described nozzle opening is φ 0.21mm.
4. diesel injector according to claim 1, it is characterized in that: the bottom of described tappet and the needle-valve of injector nozzle matching parts touch, an end of described pressure adjusting spring is connected with the tappet top, the other end with adjust pad and be connected.
5. diesel injector according to claim 1, it is characterized in that: a side adjacent with oilhole on the described body is shaped with spill port, in the described spill port oil returning pipe joint is set, and described body spill port position is provided with elastic positioning pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220407784 CN202811156U (en) | 2012-08-17 | 2012-08-17 | Diesel injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220407784 CN202811156U (en) | 2012-08-17 | 2012-08-17 | Diesel injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202811156U true CN202811156U (en) | 2013-03-20 |
Family
ID=47870042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220407784 Expired - Fee Related CN202811156U (en) | 2012-08-17 | 2012-08-17 | Diesel injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202811156U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363111A (en) * | 2013-07-31 | 2013-10-23 | 山东鑫亚工业股份有限公司 | Sealing gasket used for leak-proof connection mating |
-
2012
- 2012-08-17 CN CN 201220407784 patent/CN202811156U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363111A (en) * | 2013-07-31 | 2013-10-23 | 山东鑫亚工业股份有限公司 | Sealing gasket used for leak-proof connection mating |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20160817 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |