CN107965405A - A kind of injector and its novel magnetic circuit - Google Patents
A kind of injector and its novel magnetic circuit Download PDFInfo
- Publication number
- CN107965405A CN107965405A CN201711191513.5A CN201711191513A CN107965405A CN 107965405 A CN107965405 A CN 107965405A CN 201711191513 A CN201711191513 A CN 201711191513A CN 107965405 A CN107965405 A CN 107965405A
- Authority
- CN
- China
- Prior art keywords
- pipe
- injector
- magnetic circuit
- armature
- sleeve
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
Abstract
The present invention discloses a kind of novel magnetic circuit of injector, including first sleeve and the second casing；First sleeve includes inlet tube, installing pipe, shaft shoulder ring, and is integrally formed；Second casing includes accommodating pipe, outlet tube, both are integrally formed；The top for accommodating pipe is abutted with the bottom surface of shaft shoulder ring, is accommodated between the inner wall of pipe and the outer wall of installing pipe there are cavity, is provided with it and is used to drive armature end electromagnetic coil in axial sliding.Entirety of the invention only includes first sleeve and second casing two parts part, both sub-structure component is integrally formed design at the same time, and produce cavity when assembling to can be used for electromagnetic coil is installed, so can it is smooth realize to armature it is axially driving on the basis of, the machining accuracy manufactured to parts is reduced, reduces systematic error accumulation, assembly precision and armature is improved and slides axially precision, production cost is reduced, improves jet performance.Invention additionally discloses a kind of injector, its advantage are as described above.
Description
Technical field
The present invention relates to injector technical field, more particularly to a kind of novel magnetic circuit of injector.The present invention also relates to
A kind of and injector for including above-mentioned novel magnetic circuit.
Background technology
With the development of Chinese mechanical industry, more and more mechanical equipments have been used widely.
In auto manufacturing, the species of auto-parts is thousands of, by taking the fuel injector of engine as an example.Fuel oil
Injector belongs to fuel injection system, and fuel injection system refers under pressure, using fuel injector by certain amount
Fuel direct cylinder injection or air intake duct in fuel supply device.According to the difference of spray fuel species, vapour can be divided into
Electronic fuel injection system, diesel injection system, gaseous fuel injection system etc..And according to the difference of its control mode, machinery can be divided into
Control formula, electronic control type and mechanical electronic control formula.
At present, electronic control type fuel injector has been popularized.Fuel injector receives the fuel injection pulse signal that ECU is sent,
It is accurately controlled fuel injection amount.The spray characteristics of fuel injector include atomized particle size, mist of oil distribution, oil Shu Fangxiang, range and expansion
Dissipate cone angle etc..The species of fuel injector is very much, and part is also more complicated thereon, and for electric-controlled fuel injector, magnetic structure is wherein
A very important ring.
In the prior art, the magnetic structure of electric-controlled fuel injector mainly includes electromagnetic coil, armature (or needle-valve etc.) and uses
In mechanical structures such as several casings of installation electromagnetic coil, sleeve, gasket, jack-posts.Each mechanical structure is nested against one another, branch
Support, forms electromagnetic coil stable installation space.When being powered by power drive system for electromagnetic coil, can with moving armature or
Needle-valve axially lifting or decline.However, since the magnetic structure amount of parts of current electric-controlled fuel injector is more, structural relation
It is more complicated, while the inner space of fuel injector is again narrow, therefore machining accuracy to parts and assembly precision requirement are very
Height, when assembling is there are during systematic error, multiple assembling easy overlay errors of link, while when armature slides in it, easily by
Vibration to surrounding components is transmitted and influenced, the problems such as causing distributive value precision to decline.
Therefore, requirement of the fuel injector magnetic structure to processing and assembly precision how is reduced, assembly precision is improved, drops at the same time
Low production cost, improves jet performance, is those skilled in the art's technical problem urgently to be resolved hurrily.
The content of the invention
The object of the present invention is to provide a kind of novel magnetic circuit of injector, can reduce to processing and assembly precision
It is required that improving assembly precision, while production cost is reduced, improve jet performance.It is a further object of the present invention to provide one kind to spray
Emitter.
In order to solve the above technical problems, the present invention provides a kind of novel magnetic circuit of injector, including first sleeve and
Second casing；
The first sleeve is including being used to introduce the inlet tube of fluid, being connected with the inlet tube and be used to install armature end
The installing pipe in portion, and be arranged at it is described installation pipe outer wall on shaft shoulder ring, the inlet tube, installing pipe and the shaft shoulder ring one into
Type；
Second casing is connected and is used for including the receiving pipe for being set in outside the installing pipe, with the receiving pipe
The outlet tube of the armature main part is installed, pipe and the outlet tube of accommodating is integrally formed；
The top for accommodating pipe is abutted with the bottom surface of the shaft shoulder ring, the inner wall for accommodating pipe and the installing pipe
It is provided with there are cavity between outer wall, and in the cavity for driving armature end electromagnetic coil in axial sliding.
Preferably, screen pipe is connected between the inlet tube and installing pipe, and be provided with the screen pipe for pair
The filter that fluid is filtered；The screen pipe is integrally formed with the inlet tube and installing pipe.
Preferably, the outside diameter of the receiving pipe is equal with the outside diameter of the shaft shoulder ring.
Preferably, further include and be set in the coil holder installed and the electromagnetic coil is installed in pipe outer wall, for winding.
Preferably, it is both provided with the mouth of pipe of the inlet tube and on the outer wall of the outlet tube for being pressed sealing ring
Installation base.
The present invention also provides a kind of injector, including such as above-mentioned any one of them novel magnetic circuit.
Preferably, the injector is specially electric-controlled fuel injector.
The novel magnetic circuit of injector provided by the present invention, mainly includes first sleeve and the second casing.Wherein,
Sleeve specifically includes inlet tube and installing pipe, and the second casing specifically includes receiving pipe and outlet tube.Inlet tube is used for fluid
(such as fuel oil) introduces, and installing pipe communicates therewith, and inside is used for the end for installing armature, can also install return spring of course simultaneously.
Shaft shoulder ring is arranged on the outer wall of installing pipe, and is integrally formed with inlet tube and installing pipe.Pipe sleeve is accommodated to be located at outside installing pipe,
Outlet tube communicates therewith, its internal main part for being used to install armature, and the top for accommodating pipe is abutted with the bottom surface of shaft shoulder ring,
Sealing is formed, while accommodates the inner wall of pipe and is not close to the outer wall of installing pipe, but there are certain interval, i.e., have between the two
There is cavity, which is mainly used for installing electromagnetic coil, when being powered in electromagnetic coil, armature can be lifted one by electromagnetic force
Set a distance.In addition, it is also to be integrally formed design to accommodate pipe and outlet tube.So set, emitter provided by the present invention is new
Magnetic structure, it is overall only to include first sleeve and second casing two parts part, while the subdivision of first sleeve and the second casing
Construction package is integrally formed design, and produces cavity when first sleeve and the second casing are assembled and can be used for installing electromagnetism
Coil, in this way, can it is smooth realize to armature it is axially driving on the basis of, reduce the processing essence manufactured to parts
Degree, while the negligible amounts of parts, can significantly reduce the accumulation of systematic error, improve assembly precision, and then improve armature shaft
To precision is slided, production cost is reduced, improves jet performance.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the overall structure diagram of novel magnetic circuit in a kind of embodiment provided by the present invention.
Fig. 2 is the concrete structure schematic diagram of the first sleeve shown in Fig. 1.
Fig. 3 is the concrete structure schematic diagram of the second casing shown in Fig. 1.
Fig. 4 is the overall structure diagram of injector in a kind of embodiment provided by the present invention.
Wherein, in Fig. 1-Fig. 4：
First sleeve -1, inlet tube -101, installing pipe -102, shaft shoulder ring -103, screen pipe -104, the second set
Pipe -2, receiving pipe -201, outlet tube -202, armature -3, electromagnetic coil -4, filter -5, coil holder -6, sealing ring -
7, installation base -8.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment, belongs to the scope of protection of the invention.
Please refer to Fig.1, Fig. 1 is a kind of overall structure diagram of embodiment provided by the present invention.
In a kind of embodiment provided by the present invention, the novel magnetic circuit of injector mainly includes first set
1 and second casing 2 of pipe, and 3 (not shown) of armature and electromagnetic coil 4.
As shown in Fig. 2, Fig. 2 is the concrete structure schematic diagram of the first sleeve shown in Fig. 1.
Wherein, first sleeve 1 specifically includes inlet tube 101 and installing pipe 102.Inlet tube 101 is mainly used for fluid (such as
Fuel oil) introduce, installing pipe 102 communicates therewith, and inside is used for the end for installing armature 3, can also install return spring of course simultaneously,
To facilitate armature 3 to automatically reply initial position.Shaft shoulder ring 103 is arranged on the outer wall of installing pipe 102, and with inlet tube 101
It is integrally formed with installing pipe 102.
As shown in figure 3, Fig. 3 is the concrete structure schematic diagram of the second casing shown in Fig. 1.
Second casing 2, which specifically includes, accommodates pipe 201 and outlet tube 202.It is larger to accommodate the caliber of pipe 201, is set in first
Outside installing pipe 102 in casing 1.Outlet tube 202 is connected with accommodating pipe 201, is mainly used for installing the main part of armature 3 inside it
(generally in oval column), being provided with the fluids such as oil outlet, fuel oil on the main part of armature 3 can flow out to out from the oil outlet
In liquid pipe 202, finally sprayed in the end of outlet tube 202 by spray orifice.Accommodate the top of pipe 201 and the bottom surface of shaft shoulder ring 103
Abut, form sealing surface, while accommodate the inner wall of pipe 201 and be not close to the outer wall of installing pipe 102, but between existing necessarily
Gap, i.e., have cavity between the two, which is mainly used for installing electromagnetic coil 4.When being powered in electromagnetic coil 4, pass through electricity
Armature 3 can be lifted certain distance vertically by magnetic force so that the spray orifice conducting of 202 end of outlet tube, fluid is sprayed, on the contrary
Armature 3 then falls vertically under the action of gravity and return spring, and spray orifice is blocked.Meanwhile with 1 phase of first sleeve
Together, the receiving pipe 201 in the second casing 2 and outlet tube 202 are also to be integrally formed design.
So set, the novel magnetic circuit for the emitter that the present embodiment is provided, overall only to include first sleeve 1 and second
2 two parts part of casing, while the sub-structure component of 1 and second casing 2 of first sleeve is integrally formed design, and
Cavity is produced when 1 and second casing 2 of first sleeve assembles and can be used for installation electromagnetic coil 4, in this way, can be realized smooth to armature
3 it is axially driving on the basis of, reduce the machining accuracy manufactured to parts, while negligible amounts of parts can be big
Width reduces the accumulation of systematic error, improves assembly precision, and then improves armature 3 and slide axially precision, reduces production cost, improves
Jet performance.
In view of that may include impurity in fluid, to avoid spray orifice from blocking, the present embodiment was additionally arranged in first sleeve 1
Chimney filter 104.Specifically, the screen pipe 104 is connected between inlet tube 101 and installing pipe 102, naturally also with both one into
Type designs.Filter 5 is provided with screen pipe 104, is filtered available for fluid, impurity therein is intercepted, is ensured
It is clean into the fluid in installing pipe 102.
In view of the seal of 4 place cavity of electromagnetic coil, the top for accommodating pipe 201 has on the one hand been mentioned in foregoing teachings
End is abutted with the bottom surface of shaft shoulder ring 103, forming face sealing, on the other hand can also make the outside diameter and shaft shoulder ring 103 of receiving pipe 201
Outside diameter is equal, reduces horizontal occupied space as far as possible, convenient flexibly install, adjust.
Further, it is contemplated that for fuel oil when fluid flowing in 1 and second casing 2 of first sleeve, its hydraulic tightness is non-
It is often important, for this reason, the present embodiment is provided with installation base at the mouth of pipe of inlet tube 101 and on the outer wall of outlet tube 202
8, which is mainly used for being engaged with peripheral parts such as housings, is pressed sealing ring 7.So set, can be effectively improved
The overall hydraulic tightness of 1 and second casing of sleeve 2, prevents from revealing.
In addition, the installation in the cavity formed for convenience of electromagnetic coil 4 between 1 and second casing 2 of first sleeve, this
Embodiment has been arranged coil holder 6 on the outer wall of installing pipe 102.Specifically, the coil holder 6 can be in thin-wall circular tubular, multiturn electromagnetic wire
Circle 4 can be wrapped on coil holder 6, while can also set limiting plate at the both ends of coil holder 6, prevent 4 axial slip of electromagnetic coil.
As shown in figure 4, Fig. 4 is the overall structure signal of injector in a kind of embodiment provided by the present invention
Figure.
The present embodiment also provides a kind of injector, mainly including housing, electric drive structure and novel magnetic circuit, wherein,
The novel magnetic circuit is identical with above-mentioned related content, and details are not described herein again.
In addition, it is necessary to illustrate, the injector in the present embodiment, refers specifically to electric-controlled fuel injector.Certainly, this implementation
The novel magnetic circuit that example is provided similarly is adapted to the injector of remaining type.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or use the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and the principles and novel features disclosed herein phase one
The most wide scope caused.
Claims (7)
1. a kind of novel magnetic circuit of injector, it is characterised in that including first sleeve (1) and the second casing (2)；
The first sleeve (1) is including being used to introduce the inlet tube (101) of fluid, connecting and be used for the inlet tube (101)
The installing pipe (102) of armature (3) end, and the shaft shoulder ring (103) being arranged on the installing pipe (102) outer wall, institute are installed
Inlet tube (101), installing pipe (102) and shaft shoulder ring (103) is stated to be integrally formed；
Second casing (2) includes being used to be set in the outer receiving pipe (201) of the installing pipe (102), is managed with described accommodate
(201) outlet tube (202) for installing the armature (3) main part is connected and is used for, it is described to accommodate pipe (201) and outlet tube
(202) it is integrally formed；
It is described accommodate pipe (201) top is abutted with the bottom surface of the shaft shoulder ring (103), it is described accommodate manage (201) inner wall and
It is provided between the outer wall of the installing pipe (102) there are cavity, and in the cavity for driving the armature (3) end axis
To the electromagnetic coil (4) of slip.
2. novel magnetic circuit according to claim 1, it is characterised in that the inlet tube (101) and installing pipe (102)
Between be connected with screen pipe (104), and the filter (5) for being filtered to fluid is provided with the screen pipe (104)；
The screen pipe (104) is integrally formed with the inlet tube (101) and installing pipe (102).
3. novel magnetic circuit according to claim 2, it is characterised in that it is described accommodate pipe (201) outside diameter with it is described
The outside diameter of shaft shoulder ring (103) is equal.
4. novel magnetic circuit according to claim 3, it is characterised in that further include and be set in the installing pipe (102)
The coil holder (6) of the electromagnetic coil (4) is installed on outer wall, for winding.
5. novel magnetic circuit according to claim 4, it is characterised in that at the mouth of pipe of the inlet tube (101) and
The installation base (8) for being pressed sealing ring (7) is both provided with the outer wall of the outlet tube (202).
6. a kind of injector, it is characterised in that including such as claim 1-5 any one of them novel magnetic circuit.
7. injector according to claim 6, it is characterised in that the injector is specially electric-controlled fuel injector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711191513.5A CN107965405A (en) | 2017-11-24 | 2017-11-24 | A kind of injector and its novel magnetic circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711191513.5A CN107965405A (en) | 2017-11-24 | 2017-11-24 | A kind of injector and its novel magnetic circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107965405A true CN107965405A (en) | 2018-04-27 |
Family
ID=62001604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711191513.5A Pending CN107965405A (en) | 2017-11-24 | 2017-11-24 | A kind of injector and its novel magnetic circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107965405A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0687811A1 (en) * | 1994-06-18 | 1995-12-20 | Robert Bosch Gmbh | Electromagnetically actuable fuel injection valve |
| CN1220723A (en) * | 1997-03-26 | 1999-06-23 | 罗伯特·博施有限公司 | Fuel-injection valve, method for producing and use of the same |
| CN1985087A (en) * | 2004-07-09 | 2007-06-20 | 罗伯特·博世有限公司 | Fuel injection valve |
| CN107091184A (en) * | 2017-07-03 | 2017-08-25 | 东莞市盈森汽车电喷科技有限公司 | Fuel injector high-performance magnetism line structure |
| CN107152363A (en) * | 2017-07-03 | 2017-09-12 | 浙江凯利智控科技有限公司 | Fuel injector magnetic structure |
-
2017
- 2017-11-24 CN CN201711191513.5A patent/CN107965405A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0687811A1 (en) * | 1994-06-18 | 1995-12-20 | Robert Bosch Gmbh | Electromagnetically actuable fuel injection valve |
| CN1220723A (en) * | 1997-03-26 | 1999-06-23 | 罗伯特·博施有限公司 | Fuel-injection valve, method for producing and use of the same |
| CN1985087A (en) * | 2004-07-09 | 2007-06-20 | 罗伯特·博世有限公司 | Fuel injection valve |
| CN107091184A (en) * | 2017-07-03 | 2017-08-25 | 东莞市盈森汽车电喷科技有限公司 | Fuel injector high-performance magnetism line structure |
| CN107152363A (en) * | 2017-07-03 | 2017-09-12 | 浙江凯利智控科技有限公司 | Fuel injector magnetic structure |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 530007 Building A 604, A605 and A606, 88 West University Road, Nanning City, Guangxi Zhuang Autonomous Region Applicant after: Guangxi Kadiya Technology Co. Ltd. Address before: 530031 Unit 5-0901, Building 6, Champagne Manor Phase II, Longguang Provence, 109 Baisha Avenue, Nanning City, Guangxi Zhuang Autonomous Region Applicant before: Guangxi Kadiya Technology Co. Ltd. |
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| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180427 |
|
| RJ01 | Rejection of invention patent application after publication |