CN104025215B - Solenoid Valve, In Particular Quantity Control Valve For A High-Pressure Fuel Pump - Google Patents
Solenoid Valve, In Particular Quantity Control Valve For A High-Pressure Fuel Pump Download PDFInfo
- Publication number
- CN104025215B CN104025215B CN201280064799.XA CN201280064799A CN104025215B CN 104025215 B CN104025215 B CN 104025215B CN 201280064799 A CN201280064799 A CN 201280064799A CN 104025215 B CN104025215 B CN 104025215B
- Authority
- CN
- China
- Prior art keywords
- section
- pole core
- electromagnetic valve
- cold forming
- armature
- 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.)
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Links
- 239000000446 fuel Substances 0.000 title claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 6
- 239000010959 steel Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 28
- 238000004519 manufacturing process Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 18
- 230000015572 biosynthetic process Effects 0.000 claims description 13
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 12
- 229910052804 chromium Inorganic materials 0.000 claims description 11
- 239000011651 chromium Substances 0.000 claims description 11
- 238000003754 machining Methods 0.000 claims description 10
- 238000005242 forging Methods 0.000 claims description 6
- 229910000859 α-Fe Inorganic materials 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 4
- 239000002902 ferrimagnetic material Substances 0.000 claims description 3
- 239000003302 ferromagnetic material Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 230000005291 magnetic effect Effects 0.000 description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000137 annealing Methods 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005293 ferrimagnetic effect Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/081—Magnetic constructions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/126—Supporting or mounting
Abstract
The invention relates to a solenoid valve, in particular a quantity control valve (12) for a high-pressure fuel pump, with a pole core (38) and an axially movable armature (18), wherein an end face (37) of the pole core (38) forms a stop (39) for the armature (18), and wherein the pole core (38) is made of a stainless ferritic steel and the end face (37) of the pole core (38) forming the stop (39) is present at a section (50b) produced by plastic cold forming.
Description
Technical field
The present invention relates to a kind of electromagnetic valve and method.
Background technology
Become known for the electromagnetic valve of various applications from market.The control valve for being for example used for high-pressure fuel pump can be by means of
The fuel quantity that Magnetic Control is conveyed by high-pressure fuel pump.It is possible thereby to the conveying capacity of the restriction of fuel is drawn under high pressure
In accumulator (" rail ") for internal combustion engine.Frequently electromagnetic valve is so constituted so as to coil electricity when armature relative to
One stopper section can be with backstop for example on pole core.
The content of the invention
As the present invention basis problem by according to electromagnetic valve of the invention and by according to according to this
Bright method is solved.For important feature of the invention is positioned in subsequent description and accompanying drawing, wherein each feature is not only independent
Ground and in the form of various combination for the present invention can be important, without situation about explicitly pointed out to this again
Under.
Present invention has the advantage that, electromagnetic valve can be constituted especially wear-resistingly, wherein pole core had it is soft
The magnetic characteristic and armature stopper section formed on the end regions of pole core is especially lasting.Armature stopper section can have
There are Magneto separate layer such as hard chromium layers, the wherein material of pole core is that comparison is fixed in hard chromium layers in, although magnetic pole
Generally speaking iron core has a kind of itself softer material manufacture.In addition can be used to manufacture electromagnetic valve by means of according to the present invention
Method is especially accurate and simultaneously effective manufactures pole core.Realized by the processing of the order in preferably one clamping device
The high Position location accuracy of the comparison of the material area of molding.Furthermore the manufacture realizes the accurate processing of shape and is to compare
Low cost.
The present invention relates to the control valve of a kind of electromagnetic valve, particularly high-pressure fuel pump, can with pole core and axial direction
The side of mobile armature, wherein pole core forms the stopper section for armature.According to the present invention, pole core is by a kind of ferrum
Ferrite, for example rustless ferrite steel making, and the side of the formation stopper section of pole core is by modeling
Property cold forming manufacture section on exist.Here based on considered below, i.e. the rustless ferrum oxygen steel of soft annealing --- for example by
" 1.4511 "-material constitute --- with good soft magnetic characteristic, the wherein steel however mechanically equally compare " soft ".Steel it is cold
Although molding can be allowed to generally harder, wherein compromising the magnetic characteristic of pole core.Therefore according to the present invention only
The end regions towards armature of pole core or the side being related to are configured to plastic cold deformation.If in addition the present invention must
Other materials can be used for as ferrite steel and the other application situation of electromagnetic valve is used also as.
If stopper section is with hard chromium layers coating, then improve the fatigue strength of electromagnetic valve.If armature is by backstop, then hard
Layers of chrome causes stopper section harder and realizes Magneto separate, thus at least reduces the cementing property of magnetic of the armature on stopper section.Magnetic
The plasticity cold forming here of pole iron core realizes the particular fixed basis of the hard chromium layers applied for preferred plating, thus improves
The fatigue strength and persistency of hard chromium layers on the basis of.
Particularly present invention setting, the side of the formation stopper section of pole core pass through radially circle forging and/or roll at one
Exist in the section of system and/or axial upset and/or track formation extruding manufacture.The manufacture section is by simple and inexpensive
Mode realizes the cold forming of the local restricted on side.Thus the end regions towards armature of pole core or side be only
Hardness with increase, thus improves the fatigue strength of electromagnetic valve --- especially in conjunction with hard chromium layers ---.While pole core
The non-cold forming of remaining section and therefore have soft magnetic characteristic.
If the side of the formation stopper section of pole core is in the section of a machining after plasticity cold forming
Exist, then the electromagnetic valve more accurately works.Thus side has big hardness and especially little mechanical tolerance simultaneously.
In addition the present invention relates to a kind of method for manufacturing electromagnetic valve, wherein, for electromagnetic valve pole core by
Manufacture in following steps：
The end section of (a) plastic forming ferrimagnetic material or ferromagnetic material；
(b) machining end section.
The plastic forming --- which is preferably implemented as cold forming --- realized in the step (a) realize for stopper section or
For the big hardness that the basis of hard chromium layers needs.It is public that the machining implemented in step (b) realizes especially little machinery
Difference.It is favourable that this is particularly on stopper section, and the sky of minimum or optimum respectively thus can be formed in the operation of electromagnetic valve
Gas gap.Machining is only so realized in degree so that retain plastic forming material on the end regions of pole core
Enough volumes.
Preferably the method is so implemented, by means of the forging of radial direction circle and/or by means of rolling and/or by means of axial upset
And/or plastic forming is realized by means of track formation extruding manufacture.If should plastic forming ferrimagnetic material or ferromagnetic material
Only smaller volume, then this is for the particularly suitable method of plastic forming.
Especially can accurately and efficiently be implemented with following steps according to the method for the present invention：
Before step (a)：Bar-shaped material is clamped in clamping device；
After step (b)：The end section of processing is separated, one axial dimension of mobile bar-shaped material in clamping device
And the step of before repeating.
It is blank section bar in the bar-shaped material of the front clamp of step (a), multiple magnetic pole ferrum is manufactured in succession by the blank section bar
Core.For this purpose, the bar-shaped material is for example clamped on an automatic lathe (Metal Cutting Machine Tool).So blank in step (a)
The respective end section of section bar is by means of above-mentioned processing method plastic forming.Subsequently in step (b) --- preferably without transformation
Under process condition --- realize the respective end section machining of blank section bar to predetermined degree.After step (b)
Separate the end section of processing, that is, the pole core being substantially finished.Subsequently bar-shaped material edge processing in clamping device
The step of before one axial dimension of the direction movement pole core of instrument and repetition.Thus eliminate not only at least one
Transformation process, but the corresponding new positioning of workpiece is equally eliminated, it is possible thereby to avoid additional manufacturing tolerance.
Description of the drawings
The exemplary form of implementation of the present invention is illustrated referring to the drawings.Accompanying drawing is illustrated：
Fig. 1：The partial section view of the first form of implementation of control valve；
Fig. 2：The partial section view of the electromagnetic operating device of the second form of implementation of control valve；
Fig. 3：By the schematic diagram for reducing cross section cold forming；
Fig. 4：By the schematic diagram for increasing cross section cold forming；
Fig. 5：The pole core of the electromagnetic operating device of Fig. 2 in space view；And
Fig. 6：Flow chart for manufacturing the method for pole core.
For functional equivalent element and variable in all figures the also identical accompanying drawing mark used in different forms of implementation
Note.
Specific embodiment
Fig. 1 shows the partial section view of the electromagnetic operating device 10 of the first form of implementation of control valve 12.Amount control
Valve 12 is the part of (unshowned) high-pressure pump of the fuel system of the gasoline direct for internal combustion engine.In addition show housing
14 several sections, axially towards 16 moveable armature 18 of longitudinal axis and coil 20.Armature 18 has axial hole 19 and holds
It is contained in guiding section 22.This external armature 18 is coupled with 24 rigidity of needle.It is configured to the armature spring 25 of helical spring in figure
It is extruded vertically downward armature 18.Needle 24 in figure below end section can be relative to the valve acted on valve disc 28
The power of spring 30 acts on valve disc 28.Valve disc 28 works relative to valve seat 32.Lower end region in the figure of housing 14 includes
Head 34, valve spring 30 are supported relative to the head.Electromagnetic operating device 10 or control valve 12 are revolved substantially around longitudinal axis 16
Turn symmetrically to constitute, but the right side of longitudinal axis 16 is illustrate only in figure.
Guiding section 22 radially surround armature 18 and as magnetic circuit a part guiding magnetic current, the magnetic circuit here by
The magnetic only indicated in accompanying drawing returns 36 and improves.In addition the pot shape for guiding section 22 to arrange in being included in the upper area of figure
Pole core 38.Pole core 38 has the stopper section 39 of annular on the side 37 towards armature 18, and armature 18 can be
Backstop on the stopper section.Stopper section 39 is for example constituted by means of hard chromium layers 60 (referring also to Fig. 5).
10 here of electromagnetic operating device is illustrated in the state of being not powered on.Armature spring 25 is acted in figure vertically downward
Armature 18 together with needle 24, so as to equally act on valve disc 28 downwardly with respect to the power of valve spring 30 and release can flow through combustion
The gap 40 of material.
If be powered to coil 20, then pull armature 18 from pole core 38 until stopper section 39 by magnetic force.Thus
Needle 24 is also lifted by valve disc 28, so as to valve spring 30 can relative to valve seat 32 extrude valve disc 28, and control valve 12 by
This closure.
The magnetic current and here that the magnetic material members guiding of electromagnetic operating device 10 is produced when being powered to coil 20 is formed
The volume fractiion of the relative maximum of guiding section 22.Nonmagnetic component 44 is arranged such near stopper section 39 so that guiding
The upper and lower region Magneto separate in figure of section 22.
Fig. 2 shows the partial section view of the electromagnetic operating device 10 of the second form of implementation of control valve 12, and this second
Form of implementation is substantially similar to first form of implementation of Fig. 1.In upper section in figure, armature spring 25 is in pole core
In 38 central axial bore, backstop is on closing piece 46.Armature 18 is in the contact surface towards on the side of pole core 38 with annular
48, the contact surface is almost consistent with the stopper section 39 of annular.An axial dimension is spaced with contact surface 48 in this stopper section 39 (not having
There is reference).
Fig. 3 shows that first of the cold forming in the end section 52 of rustless Ferrimagnetic or ferromagnetic bar-shaped material 51 is shown
It is intended to.The figure shows, the first cross section 54 of bar-shaped material 51 how on the end regions 50a of end section 52 by means of
Cold forming is formed or can be formed by being reduced on the second cross section 56a.Preferably the reduction of cross section 54 is by means of footpath
Realize to circle forging, by means of rolling, by means of axial upset, by means of track formation extruding manufacture or combinations of the above.
Thus end regions 50a from the end section 52 of bar-shaped material 51 is out the end regions of pole core 38
50b.End regions 50b is so such a section, the side that there is the formation stopper section 39 of contact surface 48 in the section
37.End regions 50b shades in figure are illustrated and as cold forming has the robustness for improving.End regions 50b and its
There is the transitional region 55 of the taper that dotted line draws between remaining end section 52.In one the and then procedure of processing of Fig. 3 such as
This prefabricated pole core 38 is separated with bar-shaped material 51 in separation point position 57, but if necessary also cutting is formed before, example
Such as pass through turning.
Fig. 4 shows the second schematic diagram of the alternative cold forming in Fig. 3 on end regions 50a.The figure shows, rod
Material 51 the first cross section 54 how on the end regions 50a of end section 52 by means of cold forming by increasing to
It is formed or can be formed on two cross section 56b.This is preferably same with processing method realization described in figure 3.
On the end regions 50b of pole core 38 in figures 3 and 4 the material of cold forming due to cold forming have increase
Hardness.If necessary hard chromium layers 60 can be applied on the side 37 of end regions 50b.
Fig. 5 shows the space view of the completion statuses lower magnetic pole iron core 38 in and then Fig. 3.Pole core 38 figure
In in the end regions 50b shown in bottom as machining is with the second cross section reduced with regard to the second cross section 56b
56c.Process and with the axial end portion size (no reference) changed with regard to Fig. 3 to the same cutting of side 37.At end
Hard chromium layers 60 are electroplate with side 37.
Fig. 6 is shown for implementing the flow chart for manufacturing the method for pole core 38.Square frame 62 is first step, its
It is middle that the material 51 of rod is clamped in a clamping device of automatic lathe.The material 51 of rod has the state of soft annealing.
Subsequent square frame 64 shows second step (a), and wherein the end regions 50a of the material 51 of rod is plastically by means of cold forming
To be molded into end regions 50b.This preferably by radially circle forging and/or rolls and/or axial upset and/or track formation extruding
Realize.
Subsequent square frame 66 shows third step (b), wherein end section of the machining on end regions 50b
52.Subsequent square frame 68 shows four steps, wherein the material 51 of the end section 52 processed and rod is in separation point position 57
Separate.Subsequent square frame 70 shows the 5th step, wherein 51 1 axial dimensions of material of rod are moved in clamping device.
The step of subsequently repeating described in square frame 62 to 70, until the material 51 of rod is applied in.
By described method and step realize stopper section 39 for the lasting operation of electromagnetic valve or control valve 12 is needed
The hardness wanted.Pole core 38 is kept substantially the magnetic characteristic of soft annealed condition simultaneously, because passing through cold forming and machining
The material area being related to is smaller.
Claims (9)
1. electromagnetic valve, with pole core (38) and axially movable armature (18), the wherein side of pole core (38)
(37) form the stopper section (39) for armature (18), it is characterised in that pole core (38) is manufactured by a kind of Ferrite Material,
And the side (37) of the formation stopper section (39) of pole core (38) is present in the section manufactured by plasticity cold forming
(50b) on, the non-cold forming of remaining section of pole core.
2. electromagnetic valve according to claim 1, it is characterised in that stopper section (39) are with hard chromium layers (60) coating.
3. electromagnetic valve according to claim 1 and 2, it is characterised in that the formation stopper section (39) of pole core (38)
Side (37) is at one by radially circle forging and/or the section of rolling and/or axial upset and/or track formation extruding manufacture
(50b) exist on.
4. electromagnetic valve according to claim 1 and 2, it is characterised in that the formation stopper section (39) of pole core (38)
Side (37) is present in the section (50b) of a machining after plasticity cold forming.
5. electromagnetic valve according to claim 1, it is characterised in that the electromagnetic valve is the control valve of high-pressure fuel pump
(12)。
6. electromagnetic valve according to claim 1, it is characterised in that the pole core (38) is by rustless ferrite steel
Manufacture.
7. the method for being used for manufacturing electromagnetic valve, it is characterised in that the pole core (38) for electromagnetic valve is by means of following steps
Manufacture：
A the end section (52) of () plasticity cold forming ferrimagnetic material or ferromagnetic material (51), remaining section of pole core are non-
Cold forming；
End section (52) described in (b) machining.
8. method according to claim 7, it is characterised in that by means of the forging of radial direction circle and/or by means of rolling and/or borrow
Help axial upset and/or the plasticity cold forming is realized by means of track formation extruding manufacture.
9. the method according to claim 7 or 8, it is characterised in that the method is comprised the following steps：
Before step (a)：Bar-shaped material (51) is clamped in clamping device；
After step (b)：The end section (52) of processing is separated,
The step of before (51) axial dimensions of bar-shaped material and repetition are moved in clamping device.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011089999.5 | 2011-12-27 | ||
| DE201110089999 DE102011089999A1 (en) | 2011-12-27 | 2011-12-27 | Solenoid valve, in particular quantity control valve of a high-pressure fuel pump |
| PCT/EP2012/073049 WO2013097984A1 (en) | 2011-12-27 | 2012-11-20 | Solenoid valve, in particular quantity control valve for a high-pressure fuel pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104025215A CN104025215A (en) | 2014-09-03 |
| CN104025215B true CN104025215B (en) | 2017-04-26 |
Family
ID=47263276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280064799.XA Active CN104025215B (en) | 2011-12-27 | 2012-11-20 | Solenoid Valve, In Particular Quantity Control Valve For A High-Pressure Fuel Pump |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2798650B1 (en) |
| KR (1) | KR101532970B1 (en) |
| CN (1) | CN104025215B (en) |
| DE (1) | DE102011089999A1 (en) |
| WO (1) | WO2013097984A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014215466A1 (en) | 2014-08-05 | 2016-02-11 | Robert Bosch Gmbh | magnetic valve |
| DE102015105489A1 (en) * | 2015-04-10 | 2016-10-13 | Bürkert Werke GmbH | actuator |
| DE102015212387A1 (en) * | 2015-07-02 | 2017-01-05 | Robert Bosch Gmbh | Electromagnetically actuated suction valve for a high-pressure pump and method for producing such a suction valve |
| US11320061B2 (en) * | 2017-11-22 | 2022-05-03 | Eagle Industry Co., Ltd. | Solenoid valve |
| KR101987455B1 (en) | 2018-01-26 | 2019-09-30 | (주)모토닉 | Assembling construction for electronic solenoid valve |
| KR101987456B1 (en) | 2018-01-26 | 2019-06-12 | (주)모토닉 | Sleeve construction for electronic solenoid valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1056369A (en) * | 1990-04-19 | 1991-11-20 | 帝国化学工业公司 | Resin bound type magnet and production method thereof |
| US6345608B1 (en) * | 1998-07-29 | 2002-02-12 | Robert Bosch Gmbh | Fuel supply system for an internal combustion engine |
| CN1714235A (en) * | 2002-12-04 | 2005-12-28 | 罗伯特·博世有限公司 | Fuel-injection valve |
| CN1898046A (en) * | 2003-12-22 | 2007-01-17 | 本田技研工业株式会社 | Method of forming member, valve guide and method of forming the valve guide, and method of forming tubular member |
| CN101025136A (en) * | 2006-02-17 | 2007-08-29 | 株式会社日立制作所 | Electromagnetic fuel injector and method for assembling the same |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2997633A (en) * | 1958-05-13 | 1961-08-22 | Westinghouse Electric Corp | Electromagnetic actuated devices |
| US5488340A (en) * | 1994-05-20 | 1996-01-30 | Caterpillar Inc. | Hard magnetic valve actuator adapted for a fuel injector |
| JPH10169822A (en) * | 1996-12-06 | 1998-06-26 | Toyota Motor Corp | Solenoid valve |
| JP2002004013A (en) * | 2000-06-16 | 2002-01-09 | Keihin Corp | Core for solenoid valve |
| JP4707443B2 (en) * | 2005-04-21 | 2011-06-22 | 株式会社タカコ | Electromagnetic solenoid, parts thereof and manufacturing method |
| DE102007028600B4 (en) * | 2007-06-19 | 2011-06-22 | ETO MAGNETIC GmbH, 78333 | Electromagnetic actuator |
-
2011
- 2011-12-27 DE DE201110089999 patent/DE102011089999A1/en not_active Withdrawn
-
2012
- 2012-11-20 KR KR1020147009595A patent/KR101532970B1/en active IP Right Grant
- 2012-11-20 WO PCT/EP2012/073049 patent/WO2013097984A1/en active Application Filing
- 2012-11-20 EP EP12794233.2A patent/EP2798650B1/en active Active
- 2012-11-20 CN CN201280064799.XA patent/CN104025215B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1056369A (en) * | 1990-04-19 | 1991-11-20 | 帝国化学工业公司 | Resin bound type magnet and production method thereof |
| US6345608B1 (en) * | 1998-07-29 | 2002-02-12 | Robert Bosch Gmbh | Fuel supply system for an internal combustion engine |
| CN1714235A (en) * | 2002-12-04 | 2005-12-28 | 罗伯特·博世有限公司 | Fuel-injection valve |
| CN1898046A (en) * | 2003-12-22 | 2007-01-17 | 本田技研工业株式会社 | Method of forming member, valve guide and method of forming the valve guide, and method of forming tubular member |
| CN101025136A (en) * | 2006-02-17 | 2007-08-29 | 株式会社日立制作所 | Electromagnetic fuel injector and method for assembling the same |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2798650B1 (en) | 2016-02-03 |
| EP2798650A1 (en) | 2014-11-05 |
| CN104025215A (en) | 2014-09-03 |
| KR101532970B1 (en) | 2015-07-02 |
| DE102011089999A1 (en) | 2013-06-27 |
| WO2013097984A1 (en) | 2013-07-04 |
| KR20140064949A (en) | 2014-05-28 |
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