EP2634413B1 - Injecteur - Google Patents
Injecteur Download PDFInfo
- Publication number
- EP2634413B1 EP2634413B1 EP13152706.1A EP13152706A EP2634413B1 EP 2634413 B1 EP2634413 B1 EP 2634413B1 EP 13152706 A EP13152706 A EP 13152706A EP 2634413 B1 EP2634413 B1 EP 2634413B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stop
- armature
- valve needle
- magnet armature
- cavity
- 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.)
- Active
Links
- 238000002347 injection Methods 0.000 claims description 40
- 239000007924 injection Substances 0.000 claims description 40
- 239000000446 fuel Substances 0.000 claims description 11
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 3
- 230000001419 dependent effect Effects 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
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
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
- F02M51/0635—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding
- F02M51/066—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature and the valve being allowed to move relatively to each other or not being attached to each other
-
- 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
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
- F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
- F02M51/0685—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature and the valve being allowed to move relatively to each other or not being attached to each other
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
- F02M2200/304—Fuel-injection apparatus having mechanical parts, the movement of which is damped using hydraulic 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
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/188—Spherical or partly spherical shaped valve member ends
Definitions
- the present invention relates to an injection valve for injecting a medium, in particular for injecting fuel into a combustion chamber.
- valves in particular for fuel, wherein each injection openings are opened and closed by means of a valve needle.
- the valve needle is usually moved by means of an actuator against a closing spring, so that a desired amount of fuel is selectively introduced.
- the magnet armature can be decoupled from the valve needle.
- the closing spring force, the hydraulic force and the friction forces must be overcome to open the valve.
- these closing forces must be applied by the electromagnet, which has a high electrical energy requirement. Solutions are known which divides the moving mass of the valve needle into several sub-masses, which are coupled to one another by means of springs, guides and stop surfaces.
- a hydraulic valve opening in common rail diesel injectors is known, but always have a return of the fuel to the tank. This return is expensive and maintenance-prone.
- An injection valve in particular for injecting fuel into a combustion chamber, is already known, which includes, inter alia, a housing with at least one injection opening on an outlet side.
- the injector further comprises a solenoid, a magnet armature linearly movable by the solenoid, a linearly movable valve needle for opening and closing the injection port with a first stop on an outlet side of the magnet armature and a second stop on an outlet side of the armature, the magnet armature between the first Stop and the second stop relative to the valve needle is linearly movable, and wherein for the second stop a first stop surface and the first stop surface opposite the second stop surface are formed, wherein on the first stop surface designed as a cavity filled with the medium hydraulic cushion is arranged, and wherein the cavity is open on the side facing the second stop surface.
- the injection valve according to the invention with the features of claim 1 uses a pressure difference between a magnet armature bottom and a top of the stop sleeve on the valve needle against the pressure on the underside of the stop sleeve, thereby the valve needle from the valve seat to lift. This reduces the energy required to open the injector. Furthermore, the pressure difference arising during a magnet armature movement between magnet armature and stop ring is used to dampen the valve needle movement. This results in a lower noise level and less wear of the injector. Furthermore, the magnetic armature movement can be selectively damped by the hydraulic cushion according to the invention after closing the valve needle.
- an injection valve for injecting a medium with the features of claim 1.
- it is a fuel injection valve for injecting fuel into a combustion chamber.
- This fuel injection valve is used in particular for the direct injection of fuel into a spark-ignited internal combustion engine.
- the injection valve comprises a housing with at least one injection opening on an outlet side. About this at least one injection port, the medium is injected, for example, in the combustion chamber.
- the injection valve comprises a magnetic coil, a magnet armature linearly movable armature and a linearly movable valve needle for opening and closing the injection opening.
- a first stop on an outlet side facing away from the armature and a second stop on an outlet side facing the armature are formed.
- the magnet armature can move linearly between the first stop and the second stop with respect to the valve needle and with respect to the housing.
- a hydraulic cushion is provided. This hydraulic cushion is designed as a cavity filled with the medium.
- a first stop face and a first stop face opposite the second stop face are provided.
- One of the two stop surfaces is located on the armature.
- the other stop surface is located on the valve needle.
- At the first stop surface designed as a cavity hydraulic cushion is arranged. The cavity is open on the side facing the second stop surface.
- the second stop and the first stop surface are formed with the cavity completely on the valve needle.
- the second stop is formed by a fixedly connected to the valve needle sleeve.
- the first stop surface with the cavity can also be formed on the magnet armature.
- a shoulder is provided on the first stop surface.
- the shoulder on the side facing the magnet armature of the second stop extends in the direction of the magnet armature so as to limit the cavity laterally.
- This shoulder is preferably formed completely on the second stop and spaced from the main body of the valve needle. This will open the cavity one side limited by the body of the valve needle and on the other side by this paragraph.
- the inclination of the magnet armature facing side of the second stopper relative to the longitudinal axis may be combined with the formation of this paragraph.
- the second stop face in particular on the magnet armature, is shaped such that it partially dips into the cavity during a movement of the valve needle and / or of the magnet armature.
- the paragraph on the second stop is formed so that it surrounds the armature at least partially laterally.
- a first, parallel to the longitudinal axis of the valve needle surface on the magnet armature and a second, parallel to the longitudinal axis of the valve needle surface on the second stop are provided. Between these two surfaces, a gap, in particular an annular gap, is formed. This gap is used for throttled feeding and discharging the medium from the cavity.
- a first spring acting on the valve needle in the direction of the outlet and a second spring acting on the magnet armature in the direction of the outlet are provided.
- the first spring thus pushes the valve needle in its closed position.
- the second spring presses the armature in the direction of the second stop and thus also in the closing direction.
- FIG. 1 shows an injection valve 1 according to a first example, which does not belong to the claimed subject matter. Shown is the injection valve 1 in a section parallel to a longitudinal axis 7, wherein only one half of the rotationally symmetrical components of the injection valve 1 is shown.
- the injection valve 1 comprises a housing 2 with at least one injection opening 16 on an outlet side 17.
- the outlet side 17 faces an outlet 18 facing away from the outlet.
- a fixed part of the housing 2 is a magnet pot 3.
- a magnetic coil 4 is arranged in this magnet pot 3.
- Inside the housing 2 is a housing-fixed inner pole 5. At this inner pole 5, an adjusting sleeve 6 is attached.
- armature 11 In the housing 2, a relative to the housing 2 along the longitudinal axis 7 linearly movable armature 11 is arranged. About the magnetic coil 4 of the inner pole 5 is magnetized and thereby attracted to the armature 11 or repelled and thus moved along the longitudinal axis 7.
- a valve needle 8 extending along the longitudinal axis 7 is located in the housing 2.
- the valve needle 8 is movable relative to the magnet armature 11 and relative to the counter housing 2.
- the valve needle 8 comprises an internally hollow body 9 with lateral passage openings 10 for the medium to be injected.
- a stop ring 12 and a stop sleeve 13 is firmly connected to the base body 9.
- the stop ring 12 represents a first stop 14.
- the stop sleeve 13 represents a second stop 15.
- the magnet armature 11 is movable between the two stops 14, 15 and thus takes over these two stops 14, 15 with the valve needle 8.
- a spherical closure body 20 is arranged between the valve needle 8 and the injection port 16, a spherical closure body 20 is arranged. In the closed state, the valve needle 8 presses this closure body 20 onto the valve seat 21, which is embodied conically on the housing 2. The media flow through the spray opening is interrupted in the de-energized state.
- a first spring 24 is arranged between the adjusting sleeve 6 and the stop ring 12.
- a second spring 25 is arranged between the armature 11 and the inner pole 5.
- the first spring 24 presses the valve needle 8 in the direction of the outlet side 17.
- the second spring 25 presses the armature 11 in the direction of the outlet side 17th
- the closure body 20 forms, together with the lower part of the housing 2, a valve seat 21.
- a lower guide 22 is formed between the closure body 20 and the housing 2.
- the valve needle 8 is guided on the armature 11. This armature 11 in turn is guided over an upper guide 23 relative to the housing 2.
- first stop surface arranged on the stop sleeve 13 and a second stop surface, disposed on the armature 11, opposite.
- the first stop surface faces the magnet armature 11 and is inclined at an angle ⁇ with respect to the longitudinal axis 7. This angle ⁇ deviates from 90 °.
- the inclination is chosen so that on the magnet armature 11 facing side of the stop sleeve 13, a cavity 19 is formed. This cavity 19, filled with the medium to be injected, forms a hydraulic cushion.
- FIG. 2 shows a diagram for all embodiments of the injection valve 1.
- the time t is plotted. Shown is from top to bottom, a current waveform 26 to the solenoid 4, a Ventilnadelhubverlauf 27 of the valve needle 8, a Magnetankerhubverlauf 28 of the magnet armature 11, a first pressure curve 29, a second pressure curve 30 and a third pressure profile 31.
- the first pressure profile 29 is at a the side facing away from the outlet of the armature 11 is measured. Accordingly, this pressure increases when opening the injection valve 1.
- the second pressure curve 30 is measured below the stop sleeve 13. Here, the pressure remains relatively constant during opening.
- the third pressure curve 31 is measured in the cavity 19.
- This pressure curve falls accordingly when tightening the armature 11 by the Pole 5 from.
- the valve needle 8 is tightened in the opening direction of the armature 11. If the magnetic coil 4 is traversed by a current, the armature 11 starts its movement until it hits the first stop 14 after overcome Ankerfreweg and lifts the valve needle 8 from the valve seat 21. By moving the magnet armature 11, the drawn pressure curves.
- FIG. 3 shows the injection valve 1 according to a second example, which does not belong to the claimed subject matter. Identical or functionally identical components are provided with the same reference numerals in all embodiments and examples.
- the second spring 25 is no longer disposed between the armature 11 and the inner pole 5.
- a spring cup 32 is provided. This spring cup 32 is firmly connected to the armature 11 and engages behind or engages under the stop sleeve 13 on a side facing the outlet. Between the spring cup 32 and the stop sleeve 13, the second spring 25 is arranged.
- the upper guide 32 is executed directly between the valve needle 8, in particular the stop ring 12, and the inner pole 5.
- FIG. 4 shows the injection valve 1 according to a third example, which does not belong to the claimed subject matter.
- the same or functionally identical components are provided in all and examples with the same reference numerals.
- the third example corresponds to the second example except for the formation of the cavity 19.
- the magnet armature 11 facing side of the second stop 15 is stepped in the third example.
- a shoulder 33 extending in the direction of the armature 11 is provided on the stop sleeve 13. Between this shoulder 33 and the base body 9 of the valve needle 8, the cavity 19 is formed.
- FIG. 5 shows the injection valve 1 according to a fourth a fourth example, which does not belong to the claimed subject matter.
- the shoulder 33 extends much further toward the magnet armature 11, increasing the volume of the cavity 19.
- the shoulder 33 is here substantially narrower than in the third example, whereby the hydraulic adhesive forces between paragraph 33 and armature 11 reduced become. The armature 11 can thereby be moved faster on the valve needle 8.
- FIG. 6 shows the injection valve 1 according to an embodiment of the invention. Identical or functionally identical components are provided with the same reference numerals in all embodiments and examples.
- the armature 11 is formed so that it at least partially immersed in the cavity 19.
- the shoulder 33 engages laterally around the armature 11, so that a gap 34 is formed.
- the size of the gap 34 is dependent on the distance between stop sleeve 13 and armature 11. In the present embodiment, the width of the gap 34 over a certain distance regardless of the distance between armature 11 and stop sleeve 13. This results in the fourth example a path-dependent throttle via the gap 34. In the present embodiment, this throttle is largely away from the gap 34.
- the second stop 15 was flat on the armature 11 at.
- This plane-parallel nip can cause the two components to stick together hydraulically to such an extent that the injection valve is greatly delayed or does not open at all.
- the magnet armature 11 facing side of the stop sleeve 13 is wedge-shaped or inclined, so that this hydraulic bonding can not occur.
- the second stop 15 facing side of the armature 11 may be formed inclined relative to the longitudinal axis 7.
- both opposing surfaces may be inclined or wedge-shaped.
- the third example shows a variant in which this hydraulic bonding is prevented by at least one simple gradation. The gradation can be formed on the stop sleeve 13 or else on the magnet armature 11, as shown in the figures.
- the omission of the spring cup 32 in the first example leads to a cost reduction for the individual production and assembly and reduces the decisive for the noise moving mass. Due to the omission of the Spring cup 32 in the first example, especially the surface of the second stop 15 and thus the hydraulic force can be increased to open the valve, since no more space for the assembly of the spring cup 32 must be kept. Thus, in all the examples presented here instead of the spring cup 32, the arrangement of the second spring 25 as shown in the first example can be selected.
- the armature 11 and the stop sleeve 13 are no longer hydraulically connected to each other only by a small plane-parallel nip, as was the case in the prior art.
- the medium-filled cavity 19 Between the magnet armature 11 and the stop sleeve 13 according to the invention exists with the medium-filled cavity 19.
- a pressure equalization between the cavity 19 and the environment can on the one hand on the guide gap between armature 11 and valve needle 8 and the other by the gap 34 between the stop sleeve 13 and armature 11 will take place.
- the speed of the pressure compensation via the throttle point, formed by the gap 34, between armature 11 and stop sleeve 13 are set, which is independent of the relative position of the armature 11 to the stop sleeve 13 in the embodiment.
- the magnet armature 11 moves so fast that the volume between magnet armature 11 and stop sleeve 13 increases, the third pressure profile 31 drops. This creates a valve needle 8 opening force. This force is equal to the pressure difference between the second pressure curve 30 and the third pressure curve 31 multiplied by the area of the second stopper 15.
- the volume and the throttle between armature 11 and stop sleeve 13 are designed when the largest hydraulic force in the Moment acts when the armature 11 meets the stop ring 12.
- the magnet armature 11 continues its movement after the needle closure and is damped by the hydraulic forces that arise between the magnet armature 11 and the stop sleeve 13.
- needle closing however, a greater damping of the magnetic armature movement is achieved by the embodiment in the fourth example, since the throttling action increases, the closer the armature 11 of the stop sleeve 13 comes.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Claims (4)
- Soupape d'injection (1) pour l'injection d'un milieu, en particulier pour l'injection de carburant dans une chambre de combustion, comprenant :- un boîtier (2) comprenant au moins une ouverture d'injection (16) au niveau d'un côté de sortie (17),- une bobine magnétique (4),- un induit magnétique (11) déplaçable linéairement à travers la bobine magnétique (4),- un pointeau de soupape déplaçable linéairement (8) pour ouvrir et fermer l'ouverture d'injection (16) avec une première butée (14) sur un côté de l'induit magnétique (11) opposé à la sortie et une deuxième butée (15) sur un côté de l'induit magnétique (11) tourné vers la sortie,- l'induit magnétique (11) étant déplaçable linéairement entre la première butée (14) et la deuxième butée (15) par rapport au pointeau de soupape (8), et- pour la deuxième butée (15), une première surface de butée et une deuxième surface de butée opposée à la première surface de butée étant réalisées, un coussin hydraulique réalisé en tant que cavité (19) remplie du milieu étant disposé au niveau de la première surface de butée et la cavité (19) étant ouverte au niveau du côté tourné vers la deuxième surface de butée,caractérisée en ce que
une première surface parallèle à l'axe longitudinal (7) du pointeau de soupape (8) est prévue au niveau de l'induit magnétique (11) et une deuxième surface parallèle à l'axe longitudinal (7) du pointeau de soupape (8) est prévue au niveau de la deuxième butée (15), une fente (34) étant réalisée entre la première surface et la deuxième surface pour l'alimentation et l'évacuation étranglées du milieu hors de la cavité (19) et
en ce qu'un pot de ressort (32) raccordé fixement à l'induit magnétique (11) est prévu, et
en ce qu'un deuxième ressort (25) sollicitant l'induit magnétique (11) dans la direction de la sortie est prévu, le deuxième ressort (25) s'appuyant avec une extrémité sur le pot de ressort (32) et avec l'autre extrémité sur le pointeau de soupape (8), et
en ce qu'une fente radiale entre l'induit magnétique (11) et la deuxième butée (15) en tant que côté ouvert est réalisée en tant que raccordement entre la fente axiale (34) et l'intérieur du pot de ressort (32). - Soupape d'injection selon la revendication 1, caractérisée en ce que la première surface de butée est réalisée avec la cavité (19) sur toute la périphérie au niveau du pointeau de soupape (8).
- Soupape d'injection selon l'une quelconque des revendications précédentes, caractérisée en ce que la deuxième surface de butée est formée de manière à plonger en partie dans la cavité (19) lors d'un déplacement du pointeau de soupape (8) et/ou de l'induit magnétique (11).
- Soupape d'injection selon l'une quelconque des revendications précédentes, caractérisée par un premier ressort (24) sollicitant le pointeau de soupape (8) dans la direction de la sortie.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201210203161 DE102012203161A1 (de) | 2012-02-29 | 2012-02-29 | Einspritzventil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2634413A1 EP2634413A1 (fr) | 2013-09-04 |
EP2634413B1 true EP2634413B1 (fr) | 2017-04-26 |
Family
ID=47683551
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13152706.1A Active EP2634413B1 (fr) | 2012-02-29 | 2013-01-25 | Injecteur |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2634413B1 (fr) |
DE (1) | DE102012203161A1 (fr) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012217322A1 (de) * | 2012-09-25 | 2014-06-12 | Robert Bosch Gmbh | Einspritzventil |
DE102013219974B4 (de) * | 2013-10-02 | 2019-08-08 | Continental Automotive Gmbh | Ventilbaugruppe für ein Einspritzventil |
EP2860386A1 (fr) * | 2013-10-10 | 2015-04-15 | Continental Automotive GmbH | Injecteur pour moteur à combustion |
EP2949917B1 (fr) | 2014-05-27 | 2017-01-04 | Continental Automotive GmbH | Injecteur à carburant |
EP2985445A1 (fr) * | 2014-08-14 | 2016-02-17 | Continental Automotive GmbH | Soupape d'injection de fluide actionnée par solénoïde |
EP3009663B1 (fr) * | 2014-10-15 | 2020-06-24 | Vitesco Technologies GmbH | Ensemble de soupape et injecteur de fluide |
DE102014220877B3 (de) * | 2014-10-15 | 2015-12-03 | Continental Automotive Gmbh | Kraftstoffeinspritzventil |
DE102014221208A1 (de) * | 2014-10-20 | 2016-04-21 | Volkswagen Ag | Ventilvorrichtung und Brennstoffzellensystem mit einer solchen |
DE102017207273A1 (de) * | 2016-06-30 | 2018-01-04 | Robert Bosch Gmbh | Ventil zum Zumessen eines Fluids |
DE102018200364A1 (de) * | 2018-01-11 | 2019-07-11 | Robert Bosch Gmbh | Ventil zum Zumessen eines Fluids |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000265919A (ja) * | 1999-03-16 | 2000-09-26 | Bosch Automotive Systems Corp | 電磁式燃料噴射弁 |
DE10256661A1 (de) * | 2002-12-04 | 2004-06-17 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE10305985A1 (de) * | 2002-12-13 | 2004-07-15 | Robert Bosch Gmbh | Prellerfreier Magnetsteller für Einspritzventile |
JP2006017101A (ja) * | 2004-06-02 | 2006-01-19 | Denso Corp | 燃料噴射弁 |
DE102004056424B4 (de) * | 2004-11-23 | 2016-12-29 | Robert Bosch Gmbh | Brennstoffeinspritzventil und Verfahren zur Strukturierung eines magnetischen Polstücks |
JP4637931B2 (ja) * | 2008-05-22 | 2011-02-23 | 三菱電機株式会社 | 燃料噴射弁 |
-
2012
- 2012-02-29 DE DE201210203161 patent/DE102012203161A1/de active Pending
-
2013
- 2013-01-25 EP EP13152706.1A patent/EP2634413B1/fr active Active
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
EP2634413A1 (fr) | 2013-09-04 |
DE102012203161A1 (de) | 2013-08-29 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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