CN102362319B - Residual air split disc - Google Patents

Residual air split disc Download PDF

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Publication number
CN102362319B
CN102362319B CN2010800129900A CN201080012990A CN102362319B CN 102362319 B CN102362319 B CN 102362319B CN 2010800129900 A CN2010800129900 A CN 2010800129900A CN 201080012990 A CN201080012990 A CN 201080012990A CN 102362319 B CN102362319 B CN 102362319B
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CN
China
Prior art keywords
residual air
magnetic
dividing disc
air dividing
magnetic core
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Application number
CN2010800129900A
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Chinese (zh)
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CN102362319A (en
Inventor
A·雷蒂希
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication of CN102362319A publication Critical patent/CN102362319A/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00Magnets
    • H01F7/06Electromagnets; Actuators including electromagnets
    • H01F7/08Electromagnets; Actuators including electromagnets with armatures
    • H01F7/081Magnetic constructions
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M47/00Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/027Electrically actuated valves draining the chamber to release the closing pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012Valves
    • F02M63/0014Valves characterised by the valve actuating means
    • F02M63/0015Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0017Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means
    • F02M63/0021Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means characterised by the arrangement of mobile armatures
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012Valves
    • F02M63/007Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
    • F02M63/0075Stop members in valves, e.g. plates or disks limiting the movement of armature, valve or spring
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/07Fuel-injection apparatus having means for avoiding sticking of valve or armature, e.g. preventing hydraulic or magnetic sticking of parts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/90Selection of particular materials
    • F02M2200/9053Metals
    • F02M2200/9069Non-magnetic metals
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00Magnets
    • H01F7/06Electromagnets; Actuators including electromagnets
    • H01F7/08Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16Rectilinearly-movable armatures
    • H01F2007/1661Electromagnets or actuators with anti-stick disc
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00Magnets
    • H01F7/06Electromagnets; Actuators including electromagnets
    • H01F7/08Electromagnets; Actuators including electromagnets with armatures
    • H01F7/088Electromagnets; Actuators including electromagnets with armatures provided with means for absorbing shocks

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • Power Engineering (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

The invention relates to a magnetic assembly (10) for activation of a fuel injector. The magnetic assembly (10) comprises a magnetic core (22) and a magnetic sleeve (32) accommodating said magnetic core. A front side (26) of the magnetic core (22) has an anchor (14, 16). A residual air split disc (44) is inserted between the magnetic core (22) and the magnetic sleeve (32).

Description

Residual air dividing disc
Background technology
DE 196 50 865 A1 have described and have been used for controlling an injection valve, electromagnetically operated valve of the fuel pressure in the control room of the injection valve of rail high-pressure storage spraying system altogether for example.The elevating movement of a valve piston will be controlled by the fuel pressure in control room, the spray-hole of injection valve can be opened or closed by this valve piston.This electromagnetically operated valve comprises an electromagnet, movable armature and one that move together with armature and by a valve, close the valve member that spring loads to closing direction, the valve seat of this valve member and electromagnetically operated valve cooperatively interacts and controls thus the outflow of fuel by control room.
The armature chatter that occurs at work on known electromagnetically operated valve and/or the vibration of valve member have adverse influence.Be configured two-part armature according to the armature of the scheme electromagnetically operated valve of DE 196 50 865 A1 and DE 195 08 104 A1, in order to reduce the moving-mass of construction unit " armature/valve member " and reduce thus to cause the kinetic energy of vibration.Two-part armature comprises that an armature bolt and one can resist back-moving spring and be received in movably armature card on the armature bolt under the effect of the power on the closing direction of valve member in its inertia mass.This armature card remains on the armature bolt by a back-up ring and a maintenance sleeve pipe that surrounds this back-up ring.
Used additional damping device, it comprises parts that move together with armature card and the parts that position is fixing.The parts that can move together with armature card comprise the annex of parts of fixing towards position, in order to cause the damping to the armature card transient vibration when the armature card dynamic mobile.Another part of damping device is configured overtravel backstop on the parts of a fixed and arranged of electromagnetically operated valve.The maximum haul distance of its restriction, in order to can move in the axial direction armature card on the armature bolt.Overtravel backstop can by the end face of bolt a, slide block that be fixedly arranged in electromagnetically operated valve of guiding armature or by one be arranged on the parts of slide block front, for example a packing ring forms.When the annex that moves together with armature card during near this overtravel backstop mutually towards face between formed a hydraulic damping chamber.The fuel that exists in this hydraulic damping chamber produces a reaction force, and it has the opposite effect to the motion of armature card, makes thus the transient vibration of armature card be subject to damping.
The electromagnetically operated valve that is used for operating fuel injected device on fuel injection system is regulated residual gap by a residual air dividing disc of being done by the nonmagnetic metal film.Should be placed on armature by the residual air dividing disc that the nonmagnetic metal film is done when armature component is assembled and by a spring stop and electromagnetically operated valve spring, compress.Can guarantee thus: as the thin metal film of residual air dividing disc, occupy all the time a definite position or follow the motion of armature.Always obtain compromise when residual air dividing disc designs between intensity or stability and hydraulic pressure requirement.Because residual air dividing disc is fixed on the central authorities of armature, just formed the connection to the utmost point in magnetic core, residual air dividing disc will extend in spring housing.This spring housing is the outflow part be used to the capacity of returns of controlling out.Because the outflow of this conflict controlled quentity controlled variable or leakage rate can not design best, so that the armature motion that produces is not best.This means, in the short distance of armature before upper backstop, namely on the side of the magnetic core end face that points to this armature by damping very doughtily and can not reach this magnetic core end face or only just can reach after fuel that liquid is namely controlled out is extruded in fully by gap.
Summary of the invention
The present invention is based on such task, namely propose a kind of residual air dividing disc, it can use on electromagnetically operated valve, and can not hinder the outflow of capacity of returns.
The following scheme that proposes according to the present invention for example will make the geometry of the residual air dividing disc of being made by nonmagnetic metal film greatly simplify.This residual air dividing disc will no longer resemble so far embodiment and fix on armature by spring stop again according to the present invention.Obtain thus the simplification of assembling flow path.The residual air dividing disc that proposes according to the present invention will no longer block, also can partly not block spring housing and no longer hinder thus the outflow towards low pressure backflow part direction of controlled quentity controlled variable or leakage rate.The cross section of backflow geometry and residual air dividing disc is location-independent in armature and in electromagnet.
The residual air dividing disc that proposes according to the present invention is made to an apertured simple packing ring of tool, and this gap is used for avoiding distortion.Also selectively form a plurality of radial gaps with certain gap length, this gap length is less than the width of the residual air dividing disc that forms toroidal.Not be placed on armature or point on the armature planar end surface of magnetic core but be placed between magnetic core and magnetic sleeve and by magnetic core, fix according to the residual air dividing disc of proposition of the present invention.The internal diameter of the residual air dividing disc that proposes according to the present invention is selected greatly as much as possible, so that be placed on the interior utmost point of the electromagnet coil in magnetic core, can not be capped, and the residual air dividing disc that the outer utmost point of magnetic core is configured annular covers.
The residual air dividing disc that proposes according to the present invention can be placed on very simply between the lower auxiliary section that on magnetic core and magnetic sleeve downside, annular ground extends and when assembling and can very simply reach and prevent being fixed with losing when armature component is assembled.
Description of drawings
Fig. 1: be arranged on residual air dividing disc between magnetic core and magnetic sleeve, that be configured annular,
Fig. 2: first embodiment of the residual air dividing disc that proposes according to the present invention, and
Fig. 3: another embodiment of the residual air dividing disc that proposes according to the present invention.
Concrete form of implementation
Can be seen the summary copy pattern of the magnetic assembly of a fuel injector by the view according to Fig. 1.
The magnetic assembly 10 that is used for the fuel injector of fuel injector of operation, for example high-pressure storage spraying system (rail altogether) is placed in the injector body 12 of this fuel injector.Magnetic assembly 10 is positioned at the opposite of armature 14, and the planar side 16 of this armature is loaded by an electromagnetically operated valve spring 18.Adjustment ring of label 20 expressions, it is used for the adjustment of electromagnetically operated valve stroke.Adjustment ring 20 is placed in injector body 12 and is used as simultaneously the supporting of magnetic sleeve 32.Magnetic sleeve 32 is used for receiving a magnetic core 22.Magnetic core 22 itself comprises an electromagnet coil 24.Magnetic core 22 is that position that open and by coil 24 is divided into the utmost point 30 outside an interior utmost point 28 and on the opposed end face 26 of planar side 16 of itself and armature 14.
Can be found out by the view according to Fig. 1, its inboard of magnetic sleeve 32 use surrounds magnetic core 22.Magnetic sleeve 32 by one in Fig. 1 unshowned binding nut be fixed on the injector body 12 of fuel injector.Magnetic core 22 is for example by lower auxiliary section or be welded to connect and be fixed on the magnetic component internal.
The magnetic core 22 of magnetic assembly 10 comprises an open-work, be provided with on the one hand the electromagnetically operated valve spring 18 that a planar side to armature 14 16 loads in open-work, and on the other hand as return flow line 40, by it-the backflow part of the low-pressure side that the controlled quentity controlled variable controlled out by a control room of fuel injector when the solenoid operated as an example-make or leakage rate flow back into a fuel injection system in.
Also can be found out by the view according to Fig. 1, residual air dividing disc 44 is clamped on a clip position 42 between the upside of lower auxiliary section 34 of the end face 26 of magnetic core 22 and magnetic sleeve 32.Before magnetic sleeve 32 and magnetic core 22 assemblings this thin metal film of for example by nonmagnetic substance, being made, be placed on the lower auxiliary section 34 of magnetic sleeve 32 as the residual air dividing disc 44 of circle, and then magnetic core 22 and electromagnet coil 24 are fitted together.During the magnetic assembly just is fixed on injector body 12 when binding nut being loaded a definite screw-down torque.
Therefore abandon principle commonly used so far residual air dividing disc 44 no longer is fixed on the planar side 16 of armature 14 by spring stop or similarity piece, but with practice so far, pointed on the contrary the end face 26 of the magnetic core 22 of magnetic assembly 10.
Also can be found out by the view according to Fig. 1, it is the shape of an annulus in an embodiment of residual air dividing disc 44, and with reference to the view according to Fig. 2 and 3, the interior utmost point 28 of magnetic core 22 exposes, and the outer utmost point 30 of magnetic core 22 is covered by residual air dividing disc 44.Residual air dividing disc 44 no longer block, also can partly not block spring housing be in low pressure return flow line 40 open-work and no longer hinder thus controlled quentity controlled variable or leakage rate to flow out in low pressure return flow line 40.What the backflow geometry was the cross section of magnetic assembly 10 mesolow return flow lines 40 with the residual air dividing disc 44 that proposes according to the present invention is location-independent.Label 38 expression armature gaps, improved leakage rate or controlled quentity controlled variable to the reflux controlled discharge of part of low-pressure side by these armature gaps.Can make controlled quentity controlled variable or leakage rate flow into the open-work of magnetic core 22 by armature gap 38, be provided with electromagnetically operated valve spring 18 in this open-work.
Can be seen the first scheme of the residual air dividing disc that proposes according to the present invention by the view according to Fig. 2.
Fig. 2 represents: the residual air dividing disc 44 here is configured annulus 48.The annulus width of annulus 58 is by label 54 indications.Form the internal diameter of residual air dividing disc 44 of annulus 48 by sizing in this wise, it is the external diameter of the interior utmost point 28 of its magnetic core 22 of having surpassed magnetic assembly 10, design in this wise in addition the internal diameter 50 of annulus 48, namely that basically by nonmagnetic substance, do not made, the residual air dividing disc 44 that for example form metal film of electromagnet coil 24 covers.The internal diameter maximum in hole that preferably forms the residual air dividing disc 44 of annular has with the internal diameter of the outer utmost point 30 or receives therein the same size of the external diameter of coil chamber of electromagnet coil 24.
Also can be found out by the view according to Fig. 2, the residual air dividing disc 44 that forms annulus 48 comprises a single gap 46 of running through.This gap is used for avoiding the distortion when the residual air dividing disc 44 that will be made by the nonmagnetic metal thin-film material is installed on clip position 42 between the lower auxiliary section 34 of the end face 26 of magnetic core 22 and magnetic sleeve 32.
Can be seen another embodiment of the residual air dividing disc that forms annulus by the view according to Fig. 3.
Be provided with single gap 46-differently in the residual air dividing disc 44 of view according to Fig. 2-form therein annulus 48, the residual air dividing disc structure that forms annulus 48 in another embodiment shown in Figure 3 has and is positioned at one group of inner gap 56.
Extend diametrically a plurality of gaps 60 from the internal diameter 50s of annulus 48.Can find out as the view by according to Fig. 3, these gaps are not run through, but have the gap length 58 of its size less than annulus width 54.Annulus width 54 is external diameter 52 and its internal diameter 50 poor of annulus 48.Therefore leave a contact pin between the end in gap 60 is by the external diameter 52 of end and annulus 48 wide by 62, so that the residual air dividing disc 44 that can reach the proposition according to the present invention on the clip position 42 between the end face 26 of the lower auxiliary section 34 of magnetic sleeve 32 and magnetic core 22 according to the view of Fig. 1 continuous fixing in a circumferential direction.
, although not shown, also can consider a combination in the embodiment of the residual air dividing disc 44 of the formation annulus 48 shown in Fig. 2 and 3.Therefore can replace and a single gap 46 of running through that is used for the compensation distortion also is set according to one in a plurality of gaps of not running through 60 of the embodiment in Fig. 3 in the form of implementation of this annulus 48, obtain thus the combination of a configuration of the gap according to the embodiment of Fig. 2 and 3.
If keep as illustrated in fig. 3 a contact pin of residual gap disk material in the end in the gap 60 of not running through wide by 62, its processing is simplified significantly, the front location of magnetic core 22 in magnetic sleeve 32 of assembling simplified significantly.

Claims (9)

1. magnetic assembly (10), have magnetic core (22) and receive the magnetic sleeve (32) of this magnetic core, wherein, the end face (26) of this magnetic core (22) points to armature (14,16), insert residual air dividing disc (44) between this magnetic core (22) and this magnetic sleeve (32), it is characterized in that: this magnetic sleeve (32) has the lower auxiliary section of this end face (26) that acts on this magnetic core (22) from below.
2. according to claim 1 magnetic assembly (10), it is characterized in that: described residual air dividing disc (44) is fixed on clip position (42) by the described magnetic core (22) in described magnetic sleeve (32).
3. according to claim 1 magnetic assembly (10), it is characterized in that: described residual air dividing disc (44) is made metallic film by nonmagnetic substance.
4. according to claim 1 magnetic assembly (10), it is characterized in that: described residual air dividing disc (44) is made to annulus (48).
5. according to claim 4 magnetic assembly (10), it is characterized in that: the internal diameter of described residual air dividing disc (44) is greater than the external diameter of the interior utmost point (28) of described magnetic core (22).
6. according to claim 4 magnetic assembly (10), it is characterized in that: described residual air dividing disc (44) has external diameter, gap that run through (46) that start to extend to described residual air dividing disc (44) from the internal diameter of circular described residual air dividing disc (44).
7. according to claim 4 magnetic assembly (10) is characterized in that: described residual air dividing disc (44) comprise one by a plurality of gaps (60) by internal diameter (50), being started of forming, be positioned at inner gap structure (56).
8. according to claim 7 magnetic assembly (10), it is characterized in that: implement with the external diameter less than described residual air dividing disc (44) (52) and the length (58) of the difference of internal diameter (50) described gap (60).
9. the fuel injector of fuel injection system, the magnetic assembly (10) with any one according to claim 1 to 8.
CN2010800129900A 2009-03-20 2010-01-20 Residual air split disc Active CN102362319B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102009001706.2 2009-03-20
DE102009001706A DE102009001706A1 (en) 2009-03-20 2009-03-20 Residual air gap disc
PCT/EP2010/050630 WO2010105864A1 (en) 2009-03-20 2010-01-20 Residual air split disc

Publications (2)

Publication Number Publication Date
CN102362319A CN102362319A (en) 2012-02-22
CN102362319B true CN102362319B (en) 2013-11-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010800129900A Active CN102362319B (en) 2009-03-20 2010-01-20 Residual air split disc

Country Status (5)

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EP (1) EP2409308B1 (en)
CN (1) CN102362319B (en)
DE (1) DE102009001706A1 (en)
RU (1) RU2525971C2 (en)
WO (1) WO2010105864A1 (en)

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EP2434503B1 (en) * 2010-09-27 2015-07-29 ABB Technology AG Magnetic actuator with a non-magnetic insert
DE102012206215A1 (en) 2012-04-16 2013-10-17 Robert Bosch Gmbh Magnetic assembly, in particular for a solenoid valve of a fuel injector
DE102012206214A1 (en) 2012-04-16 2013-10-17 Robert Bosch Gmbh Magnet component for servo valve of common rail injector, has residue air gap disk formed as circular ring and fastened at anchor plate-side front end of magnetic core by firmly bonded connection portions using weld
FR2991728B1 (en) * 2012-06-08 2016-04-29 Bosch Gmbh Robert ELECTROMAGNETIC VALVE OF FUEL INJECTION SYSTEM
DE102012214920A1 (en) 2012-08-22 2014-02-27 Continental Automotive Gmbh Damping surface on valve components
DE102013212504A1 (en) * 2013-06-27 2014-12-31 Robert Bosch Gmbh Magnetic assembly for a fuel injector
DE102014215589A1 (en) 2014-02-10 2015-08-13 Robert Bosch Gmbh Residual air gap disk for a magnetic assembly of a solenoid valve and method for producing a residual air gap disk
DE102014207988B3 (en) * 2014-04-29 2015-09-10 Schaeffler Technologies AG & Co. KG Electromagnetic actuator
DE102015212130A1 (en) 2015-06-30 2017-01-05 Robert Bosch Gmbh Magnetic assembly and fuel injector with a magnetic assembly
TR201509949A2 (en) * 2015-08-11 2017-02-21 Bosch Sanayi Ve Tic A S A fuel injector with a new shim
DE102015223167A1 (en) * 2015-11-24 2017-05-24 Robert Bosch Gmbh Switching valve for a fuel injector and fuel injector
DE102015226499A1 (en) * 2015-12-22 2017-06-22 Robert Bosch Gmbh Solenoid valve for a fuel injection valve, method for operating the solenoid valve and fuel injection valve with such a solenoid valve
US11459987B2 (en) 2020-08-13 2022-10-04 Caterpillar Inc. Valve assembly having electrical actuator with balanced stator

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EP1231378A2 (en) * 2001-02-12 2002-08-14 Delphi Technologies, Inc. Electromagnetic fuel injector comprising flexible element for positioning armature
EP2025922A2 (en) * 2007-08-10 2009-02-18 Robert Bosch Gmbh Fuel injector valve for combustion engines

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US5238224A (en) * 1992-08-20 1993-08-24 Siemens Automotive L.P. Dry coil
US5918818A (en) * 1996-05-22 1999-07-06 Denso Corporation Electromagnetically actuated injection valve
DE19802244A1 (en) * 1998-01-22 1999-07-29 Bosch Gmbh Robert Fuel injection valve for IC engines
EP1231378A2 (en) * 2001-02-12 2002-08-14 Delphi Technologies, Inc. Electromagnetic fuel injector comprising flexible element for positioning armature
EP2025922A2 (en) * 2007-08-10 2009-02-18 Robert Bosch Gmbh Fuel injector valve for combustion engines

Also Published As

Publication number Publication date
EP2409308B1 (en) 2018-01-10
CN102362319A (en) 2012-02-22
WO2010105864A1 (en) 2010-09-23
EP2409308A1 (en) 2012-01-25
RU2525971C2 (en) 2014-08-20
DE102009001706A1 (en) 2010-09-23
RU2011142079A (en) 2013-04-27

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