CN201874713U - Oil injector - Google Patents
Oil injector Download PDFInfo
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- CN201874713U CN201874713U CN2010206707259U CN201020670725U CN201874713U CN 201874713 U CN201874713 U CN 201874713U CN 2010206707259 U CN2010206707259 U CN 2010206707259U CN 201020670725 U CN201020670725 U CN 201020670725U CN 201874713 U CN201874713 U CN 201874713U
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- eddy flow
- oil sprayer
- oil
- fuel
- needle
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Abstract
The utility model relates to an oil injector, in particular to the oil injector for a direct-injection gasoline engine in a cylinder. The oil injector comprises an armature, a needle valve, a needle valve body, an oil injector body and the like, wherein a cyclone component is arranged between the armature and a fuel oil outlet of the oil injector; in the oil injector, the distance between the cyclone component and the lower end of the armature is the total length between the lower end of the armature and the fuel outlet of the oil injector, so that the fuel oil passes through the cyclone component and then certain rotating motion is formed; the temperature exchange is realized and the deposition of coking matters left after the oil is stood on the surface of the part can be prevented; and the problems that the oil injector is coked and accumulates carbon are solved from the generation principle. Meanwhile, the oil injector has a simple structure and is reliable for work and convenient to maintain; and in addition, the engine using the oil injector has lower cost for daily use and maintenance.
Description
Technical field
The utility model relates to a kind of oil sprayer, particularly relates to a kind of oil sprayer that is used for direct spray petrol engine in cylinder.
Background technique
Because environmental pollution is serious day by day; energy crisis grows in intensity; thereby use that low to pollute energy-saving engine be national governments and professional person's target always, people's fuel economy and discharging to petrol engine when pursuing the vehicle gasoline engine good dynamics proposes more and more high requirement.The fast development of electron controls technology and measuring technology, make the high performance petrol engine of exploitation become possibility, direct spray petrol engine in cylinder (GDI, GasolineDirect Injection) motor combines the advantage of compression ignition engine and spark-ignition engine, realized the lean combustion in the cylinder by the modes such as air motion in the inner cylinder direct injection of fuel oil, variable injection timing and the control cylinder, make motor still all show bigger potentiality, become crucial developing direction of vehicle gasoline engine at aspects such as reducing discharging at fuel economy.
The oil sprayer of direct spray petrol engine in cylinder is mounted on the engine cylinder cover combustion chamber wall surface, directly contacts with high-temperature fuel gas, causes the oil sprayer operating temperature higher; Because motor is worked in a looping fashion, and injection is interrupted, the gasoline in the oil sprayer fuel gallery flows also off and on simultaneously.And usually contain sedimental precursor such as colloid in the gasoline, inside temperature is too high when oil sprayer cuts out, and the gasoline that the oil sprayer head does not have to flow easily carries out deep oxidation and forms high polymer under high temperature action, be deposited on the surface of fuel gallery and part, coking also forms carbon distribution.Thickening of carbon can change oil sprayer spray configuration, fuel injection quantity, and finally influences the firing effect of fuel oil, and automotive performance is descended.Test shows, the blanking time between the main ambient temperature meter oil spout with oil sprayer of the coking carbon distribution of oil sprayer is relevant, and the aperture time between temperature height, oil spout is long, then coking rate increase; Otherwise then coking rate reduces.
For solving the influence of temperature to oil sprayer coking carbon distribution, the engine design that has places colder relatively intake duct below with oil sprayer, but this method can't also have been sacrificed the mid-best entire machine design scheme of oil sprayer simultaneously from reduce the carbon distribution phenomenon effectively at all.EP1198670B1 discloses a kind of Fuelinjection nozzle, has the fluorine-containing coat around this exhaust port in the fuel discharge outlet zone, and this coating can reduce or stop the coking on the outer end of valve.This scheme only solves the coking problem of oil sprayer head outer surface, can't solve the inner coking of oil sprayer.Germany BOSCH company also once proposed in gasoline regular additivated method and cleared up carbon distribution on the oil sprayer; This scheme is not fundamentally to solve coking carbon distribution problem.
Summary of the invention
The purpose of this utility model provides a kind of oil sprayer, can solve the inner coking carbon distribution of oil sprayer problem.This oil sprayer is from the mechanism of oil sprayer coking carbon distribution, and by the structure of oil sprayer and flowing of fuel oil, the improvement that utilizes self has solved inside coking carbon distribution problem on oil sprayer fuel gallery and the part from generating principle.
The technological scheme that the utility model adopted is to have invented a kind of oil sprayer, comprise armature 2, needle-valve 5, needle-valve body 4, oil injector body 1 etc., it is characterized in that: be provided with eddy flow parts 3 between armature 2 and the oil sprayer fuel outlet 7, described eddy flow parts 3 are that oil sprayer fuel outlet 7 length overalls are arrived in armature 2 lower ends apart from the distance of armature 2 lower ends
The technological scheme that the utility model adopted and the difference of prior art are: oil sprayer of the present utility model has been set up eddy flow parts 3 between armature 2 and oil sprayer fuel outlet 7, advantage one is after making that the interior fuel oil of oil sprayer passes through these eddy flow parts 3, form certain rotatablely moving, taken away the heat on oil injector body 1 and the needle-valve body 4, thereby reduced in the inner fuel gallery of oil sprayer near outer wall temperature partly, prevented that gasoline is imported into by outer wall and carries out deep oxidation formation high polymer under the influence of heat, finally avoided coking in this part; Rotatablely moving of fuel oil can also prevent that the high polymer that has generated is deposited on part surface after fuel oil is static simultaneously.After advantage two is these eddy flow parts of fuel oil process, have certain speed that rotatablely moves, when oil sprayer cut out, fuel oil still can keep rotatablely moving because of inertia, thereby continued to realize temperature exchange and prevent that the static back of fuel oil high polymer from depositing at part surface.The utility model oil sprayer is based on the principle of coking carbon distribution, be provided with eddy flow parts 3, utilize liquid eddy flow heat-shift, avoid local excessive temperature, also can prevent the high polymer depositional phenomenon that occurs because of fuel oil is static simultaneously, therefore solve oil sprayer coking carbon distribution problem from generating principle.
Can carry out favourable further optimization and improvement to the oil sprayer that aforementioned schemes provides by following measure.Wherein:
According to a kind of favourable structure, described eddy flow parts 3 are provided with oblique eddy flow passage 16, and the axis of this eddy flow passage 16 is helix or the different surface beeline that tilts with the oil sprayer medial axis.
According to the favourable structure of another kind, the thickness of described eddy flow parts 3 is 1～8mm.
According to the favourable structure of another kind, described eddy flow passage 16 tilt angle alpha are 0 °＜α＜90 °.
According to the favourable structure of another kind, described eddy flow passage 16 sectional shapes are circular, and diameter is 0.5～5mm.
According to the favourable structure of another kind, described eddy flow passage 16 sectional shapes are ellipse, triangle, square or polygonal.
According to the favourable structure of another kind, the big and fuel outlet circulation area of the fuel filler circulation area of described eddy flow passage 16.
According to the favourable structure of another kind, be provided with 1 above-described eddy flow passage 16 on the described eddy flow parts 3.
According to the favourable structure of another kind, described eddy flow passage 16 is evenly arranged along eddy flow parts 3 circumferencial directions.
According to the favourable structure of another kind, described eddy flow parts 3 connect with needle-valve body 4 welding or interference fit, perhaps are pressed on the oil injector body 1 by needle-valve body 4.
The present invention compares the beneficial effect that is had with prior art: oil sprayer provided by the utility model, solve the problem of oil sprayer coking carbon distribution from generating principle, simultaneously simple in structure, reliable operation, easy to maintenance, and use the daily use of motor, the cost of upkeep of this oil sprayer also lower.
Description of drawings
The present invention is further illustrated below in conjunction with drawings and Examples.
Fig. 1 is the longitudinal section of an oil sprayer.
Fig. 2 is first embodiment that the utility model oil sprayer eddy flow parts are installed.
Fig. 3 is second embodiment that the utility model oil sprayer eddy flow parts are installed.
Fig. 4 is first embodiment of eddy flow passage in the utility model oil sprayer eddy flow parts.
Fig. 5 is second embodiment of eddy flow passage in the utility model oil sprayer eddy flow parts.
Fig. 6 is the 3rd embodiment of eddy flow passage in the utility model oil sprayer eddy flow parts.
Fig. 7 is the 4th embodiment of eddy flow passage in the utility model oil sprayer eddy flow parts.
Fig. 8 is the 5th embodiment of eddy flow passage in the utility model oil sprayer eddy flow parts.
Fig. 9 is the 6th embodiment of eddy flow passage in the utility model oil sprayer eddy flow parts.
Figure 10 is the 7th embodiment of eddy flow passage in the utility model oil sprayer eddy flow parts.
Label declaration: 1. oil injector body, 2. armature, 3. the eddy flow parts, 4. needle-valve body, 5. needle-valve, 6. the needle-valve body seat surface, 7. fuel outlet, 8. the fuel gallery, 9. Sealing, 10. adjust pad, 11. flanges, 12. electromagnetic coils, 13. Returnning springs, 14. sleeves, 15. electrical connectors, 16. eddy flow passages.
Embodiment
In Fig. 1, show the utility model oil sprayer with longitudinal section; In Fig. 2, show an embodiment of the utility model oil sprayer with the vertical profile enlarged view of part.This oil sprayer is an oil sprayer that is used for the spark ignition engine oil-fired system, and it is indoor to be specially adapted to inject fuel directly into engine combustion.
This oil sprayer comprises an oil injector body 1 and a needle-valve body 4, has settled a needle-valve 5 in needle-valve body 4.Needle-valve body 4 forms sealing by a Sealing 9 with respect to oil injector body 1.By being welded on the locating flange 11 on the needle-valve 5, armature 2 forms with needle-valve 5 and is connected.Needle-valve body seat surface 6 one on needle-valve 5 and the needle-valve body 4 plays a supporting role and forms a sealing surface.Armature 2 is provided with at least one fuel oil circulation passage, and the fuel oil of importing from the center flows to sealing surface by the fuel galleries 8 in this circulation passage, the process needle-valve body 4.A Returnning spring 13 is supported on the flange 11, makes needle-valve 5 and needle-valve body seat surface 6 keep the state that fits tightly.This Returnning spring 13 is to carry out the adjusting of pretightening force by sleeve 14.Electromagnetic coil 12 is closed in the oil injector body 1, and can be encouraged by the electric current that electrical connector 15 is imported by lead.The adjustment pad 10 of different-thickness size can be used for the adjustment of stroke.This oil sprayer is a kind of oil sprayer of inwardly opening, and has at least one fuel outlet 7.
In the state of rest of oil sprayer, armature 2 makes needle-valve 5 and needle-valve body seat surface 6 keep the state that fits tightly under the pretightening force effect of Returnning spring 13.When electromagnetic coil 12 was energized, it set up a magnetic field, and this magnetic field makes armature 2 overcome the pretightening force of Returnning spring 13 and moves upward, and armature 2 drives needle-valve 5 and moves upward equally.Needle-valve 5 is lifted away from from needle-valve body seat surface 6, and fuel is directed at least one fuel outlet 7 from the sealing surface process, sprays into the firing chamber of motor then.
When cutting off coil current, after enough decaying in magnetic field, armature 2 under the effect of Returnning spring 13 from above fall, also move downward with armature 2 joining needle-valves 5 thereupon, finally be seated on the needle-valve body seat surface 6, thereby the oil sprayer closure has been finished this injection.
In oil sprayer illustrated in figures 1 and 2, be provided with eddy flow parts 3 in the fuel gallery 8 between armature 2 and the oil sprayer fuel outlet 7, particular location can be: eddy flow parts 3 are that armature 2 lower ends are to oil sprayer fuel outlet 7 length overalls apart from the distance of armature 2 lower ends
In detail, these eddy flow parts 3 can be positioned at inlet, upstream or the middle reaches of the fuel gallery 8 of needle-valve body 4; Can be arranged on armature 2 lower ends---be the ingress of needle-valve body fuel gallery 8, also can be arranged on the arbitrary position in 8 upstreams, needle-valve body fuel gallery or middle reaches.These eddy flow parts 3 advantages are set is: (1). after making that the interior fuel oil of oil sprayer passes through these eddy flow parts 3, form certain rotatablely moving, taken away on oil injector body 1 and the needle-valve body 4 heat, thereby reduced the outer wall temperature of the inner fuel gallery of oil sprayer, prevented that gasoline under the influence of outer wall excessive temperature and carry out deep oxidation and form high polymer, finally having avoided coking; Rotatablely moving of fuel oil can also prevent that the high polymer that has generated is deposited on part surface after fuel oil is static simultaneously; (2). fuel oil has certain speed that rotatablely moves through behind these eddy flow parts 3, and when oil sprayer cut out, fuel oil still can keep rotatablely moving because of inertia, thereby continues to realize temperature exchange and prevent that the static back of fuel oil high polymer from depositing at part surface.
In oil sprayer illustrated in figures 1 and 2, eddy flow parts 3 are to be fastenedly connected with mode and the needle-valve body 4 that welds, and can certainly adopt the outer rim of eddy flow parts 3 and the mode of needle-valve body 4 inner chamber interference fit to carry out fastening connection.
Shown in Figure 3 is second embodiment that the utility model oil sprayer eddy flow parts 3 are installed.This embodiment example with Fig. 1 and Fig. 2 to a great extent is identical, the main distinction wherein is, eddy flow parts 3 are not to be connected with needle-valve body 4 in fastening mode, but on eddy flow parts 3 profiles, increased the one-level step, in the oil sprayer assembly process, eddy flow parts 3 are pressed on the oil injector body 1 by needle-valve body 4.The eddy flow parts 3 of this scheme adopt the mode of assembling to be installed on the oil sprayer, make the processing of oil sprayer, assembling convenient, and the replacing of part is also more quick in the later stage oil sprayer using process simultaneously.
Be seven kinds of embodiment modification of eddy flow passage 16 in the utility model oil sprayer eddy flow parts 3 shown in Fig. 4 to Figure 10.Describe at this, irrelevant about the mounting type that all descriptions of eddy flow passage 16 embodiments in the oil sprayer eddy flow parts 3 should be regarded as with eddy flow parts 3, promptly all embodiments of eddy flow passage 16 all can be applied in respectively on the eddy flow parts of installing with different installation 3.The embodiment modification of eddy flow passage 16 in the eddy flow parts 3 all is shown with plan view among Fig. 4 to Figure 10.
According to favourable structure, the thickness of the eddy flow parts 3 of the utility model oil sprayer is 1～8mm.
In Fig. 4 and Fig. 5, show first and second embodiments of eddy flow passage 16 in the utility model oil sprayer eddy flow parts 3 with plan view.In these two kinds of embodiments, be provided with oblique eddy flow passage 16 on the eddy flow parts 3 of oil sprayer, the axis of eddy flow passage 16 is the different surface beelines that tilt with the oil sprayer medial axis in a kind of scheme, and the axis of eddy flow passage 16 is the helixes that tilt with the oil sprayer medial axis in the another kind of scheme.Eddy flow passage 16 in these two kinds of embodiments is all angled and be tilted to down with the oil sprayer medial axis, makes fuel oil have oblique motion when flowing to oil sprayer fuel outlet 7, in order to form certain rotatablely moving, reaches the purpose of eddy flow.
In Fig. 4 and Fig. 5, according to a kind of favourable structure, the eddy flow passage 16 that is provided with on the eddy flow parts 3 of the utility model oil sprayer and the tilt angle alpha of oil sprayer medial axis are 0 °＜α＜90 °, i.e. this eddy flow passage 16 and the both not parallel also out of plumb in oil sprayer medial axis.
In Fig. 4 and Fig. 5, according to a kind of favourable structure, the sectional shape of the oblique eddy flow passage 16 that is provided with on the eddy flow parts 3 of the utility model oil sprayer is circular, and diameter is 0.5～5mm.
In Fig. 6 to Fig. 9, show the 3rd to the 6th embodiment of eddy flow passage 16 in the utility model oil sprayer eddy flow parts 3 with plan view.These several embodiments example with Fig. 4 and Fig. 5 to a great extent are identical, the main distinction wherein is, oblique eddy flow passage 16 can be in maintenance identical passage axis direction and the identical circulation area with circular cross-section of maintenance, and sectional shape can be processed as ellipse, triangle, square or polygonal.
In Figure 10, show the 7th embodiment of eddy flow passage 16 in the utility model oil sprayer eddy flow parts 3 with plan view.This a kind of embodiment example with Fig. 4 to Fig. 9 to a great extent is identical, the main distinction wherein is, oblique eddy flow passage 16 the big and fuel outlet circulation area of fuel filler circulation area, no matter and what shape the cross section of oblique eddy flow passage 16 adopts.The circulation area of oblique eddy flow passage 16 is dwindled gradually along the fuel flow direction in this mode of execution, can accelerate rotatablely moving of fuel oil so that fuel oil obtains to quicken in the eddy flow passage, helps realizing the beneficial effects of the utility model more.
In the embodiment in Fig. 4 to Figure 10, the described eddy flow passage 16 more than 1 can be set on the utility model oil sprayer eddy flow parts 3, this eddy flow passage 16 can be according to actual conditions, arrange in mode arbitrarily at eddy flow parts 3 circumferencial directions.
According to a kind of favourable structure, the eddy flow passage 16 that is provided with on the eddy flow parts 3 of the utility model oil sprayer is evenly arranged along eddy flow parts 3 circumferencial directions.
In sum, adopt oil sprayer of the present utility model,, solved the problem of oil sprayer coking carbon distribution from cardinal principle, simultaneously simple in structure, reliable operation, easy to maintenance, and use the daily use of motor, the cost of upkeep of this oil sprayer also lower.
Undoubtedly, the utility model is not limited to above-mentioned embodiment, and oil sprayer of the present utility model can also have other malformations, especially the scheme that the feature of above-mentioned various embodiments is omitted, exchanged or combine.As long as be provided with the eddy flow parts in the position range that the utility model is pointed out, similarly scheme all drops within the protection domain of the present utility model.In a word, protection domain of the present utility model should comprise that those are conspicuous conversion to those skilled in the art or substitute and remodeling.
Claims (10)
1. oil sprayer, comprise armature, needle-valve, needle-valve body, oil injector body etc., it is characterized in that: be provided with the eddy flow parts between armature and the oil sprayer fuel outlet, described eddy flow parts apart from the distance of armature lower end for the armature lower end to oil sprayer fuel outlet length overall
2. oil sprayer as claimed in claim 1 is characterized in that: described eddy flow parts are provided with oblique eddy flow passage, and the axis of this eddy flow passage is helix or the different surface beeline that tilts with the oil sprayer medial axis.
3. as claim 1 or the described oil sprayer of claim 2, it is characterized in that: the thickness of described eddy flow parts is 1～8mm.
4. oil sprayer as claimed in claim 2 is characterized in that: described eddy flow passage tilt angle alpha is 0 °＜α＜90 °.
5. oil sprayer as claimed in claim 2 is characterized in that: described eddy flow channel cross-section is shaped as circle, and diameter is 0.5～5mm.
6. oil sprayer as claimed in claim 2 is characterized in that: described eddy flow channel cross-section is shaped as ellipse, triangle, square or polygonal.
7. as claim 2 or claim 5 or the described oil sprayer of claim 6, it is characterized in that: the big and fuel outlet circulation area of the fuel filler circulation area of described eddy flow passage.
8. oil sprayer as claimed in claim 2 is characterized in that: be provided with 1 above-described eddy flow passage on the described eddy flow parts.
9. as claim 2 or the described oil sprayer of claim 8, it is characterized in that: described eddy flow passage is evenly arranged along eddy flow parts circumferencial direction.
10. as claim 1 or the described oil sprayer of claim 2, it is characterized in that: described eddy flow parts connect with needle-valve body welding or interference fit, perhaps are pressed on the oil injector body by needle-valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206707259U CN201874713U (en) | 2010-12-10 | 2010-12-10 | Oil injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206707259U CN201874713U (en) | 2010-12-10 | 2010-12-10 | Oil injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201874713U true CN201874713U (en) | 2011-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206707259U Expired - Lifetime CN201874713U (en) | 2010-12-10 | 2010-12-10 | Oil injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201874713U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840074A (en) * | 2011-06-23 | 2012-12-26 | 卡特彼勒公司 | Fuel injector having reduced armature cavity pressure |
| CN103334859A (en) * | 2013-07-03 | 2013-10-02 | 上海理工大学 | Oil atomizer and manufacturing method thereof |
| CN104454274A (en) * | 2014-12-03 | 2015-03-25 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Oil sprayer |
| CN104685199A (en) * | 2012-11-26 | 2015-06-03 | 宝马股份公司 | Injection device for an internal combustion engine |
| CN113374607A (en) * | 2021-06-03 | 2021-09-10 | 上海交通大学 | Swirl oil sprayer suitable for high injection pressure |
-
2010
- 2010-12-10 CN CN2010206707259U patent/CN201874713U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840074A (en) * | 2011-06-23 | 2012-12-26 | 卡特彼勒公司 | Fuel injector having reduced armature cavity pressure |
| CN104685199A (en) * | 2012-11-26 | 2015-06-03 | 宝马股份公司 | Injection device for an internal combustion engine |
| CN104685199B (en) * | 2012-11-26 | 2017-06-27 | 宝马股份公司 | For the injection apparatus of internal combustion engine |
| US9790907B2 (en) | 2012-11-26 | 2017-10-17 | Bayerische Motoren Werke Aktiengesellschaft | Injection device for an internal combustion engine |
| CN103334859A (en) * | 2013-07-03 | 2013-10-02 | 上海理工大学 | Oil atomizer and manufacturing method thereof |
| CN104454274A (en) * | 2014-12-03 | 2015-03-25 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Oil sprayer |
| CN113374607A (en) * | 2021-06-03 | 2021-09-10 | 上海交通大学 | Swirl oil sprayer suitable for high injection pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170721 Address after: 214063 Jiangsu city of Wuxi province Qian Rong Lu No. 15 Patentee after: China FAW Group Corporation Address before: 214063 Jiangsu city of Wuxi province Qian Rong Lu No. 15 Patentee before: Wuxi Fuel Injection Equipment Institute, China FAW Group Corporation |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110622 |