EP2212542A1 - Soupape à actionnement électromagnétique - Google Patents

Soupape à actionnement électromagnétique

Info

Publication number
EP2212542A1
EP2212542A1 EP08804555A EP08804555A EP2212542A1 EP 2212542 A1 EP2212542 A1 EP 2212542A1 EP 08804555 A EP08804555 A EP 08804555A EP 08804555 A EP08804555 A EP 08804555A EP 2212542 A1 EP2212542 A1 EP 2212542A1
Authority
EP
European Patent Office
Prior art keywords
armature
valve
guide body
electromagnetically actuated
actuated valve
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.)
Granted
Application number
EP08804555A
Other languages
German (de)
English (en)
Other versions
EP2212542B1 (fr
Inventor
Ferdinand Reiter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2212542A1 publication Critical patent/EP2212542A1/fr
Application granted granted Critical
Publication of EP2212542B1 publication Critical patent/EP2212542B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
    • F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
    • 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
    • F02M51/0671—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 having an elongated valve body attached thereto
    • F02M51/0682—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 having an elongated valve body attached thereto the body being hollow and its interior communicating with the fuel flow
    • 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
    • F02M61/166—Selection of particular materials
    • 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
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting

Definitions

  • the invention is based on an electromagnetically actuated valve according to the preamble of the main claim.
  • a known electromagnetically operable valve in the form of a fuel injection valve of the prior art is shown, which has a conventional structural design of a circumferential guide collar on the outer periphery of a movable armature. During its axial movement of the armature slides with its guide collar in the inner opening of a valve sleeve along its inner wall, which is insofar guided within the valve sleeve, whereby tilting or tilting of the armature is avoided.
  • the electromagnetically actuated valve according to the invention with the characterizing features of claim 1 has the advantage of a compact design.
  • the valve is particularly inexpensive to produce, since the anchor guide is particularly simple and inexpensive realized.
  • a guide body is introduced into an inner longitudinal bore of the armature and into an inner flow bore of the inner pole, wherein the guide body is fixed in the armature or inner pole and is loosely guided in the respective other component.
  • the contact surface serving the guide is advantageously reduced compared to the solutions of the prior art.
  • the guide is on a smaller diameter level. An improvement in function is given insofar as disadvantageous radial forces are avoided because of the guide-free outer circumference of the armature.
  • the guide body sleeve-shaped and thin-walled and made of a material with austenitic structure is particularly advantageous.
  • the guide body as a deep-drawn part is cost-effective.
  • the austenitic material has the advantage that there is no magnetic short circuit between the inner pole and the armature.
  • VerFDfix in which in a corresponding manner at the armature or inner pole and the guide body torsional forming functional elements are mounted.
  • the rotational fixation is advantageous for the constancy of functional values of the valve, such as flow and angle and the wear behavior.
  • FIG. 1 shows an electromagnetically actuated valve in the form of a fuel injection valve according to the prior art
  • FIG. 2 shows a partial view II of FIG. 1 of the known fuel injection valve according to the prior art, which identifies the region relevant to the invention
  • Figure 3 is a partial view of a valve according to the invention.
  • Figure 4 is a section along the line IV-IV in Figure 3 with a first
  • Figure 5 shows a section along the line V-V in Figure 3 with a second embodiment of the armature.
  • FIG. 1 is exemplified an electromagnetically operable valve in the form of a fuel injection valve for fuel injection systems of mixture-compression, spark-ignited internal combustion engines according to the prior art for a better understanding of the invention.
  • the valve has a surrounded by a magnetic coil 1, serving as an inner pole and partially as a fuel flow largely tubular core 2.
  • the magnetic coil 1 is of an outer, sleeve-shaped and stepped running, z.
  • the magnetic coil 1, the core 2 and the valve shell 5 together form an electrically excitable actuator.
  • valve sleeve 6 While embedded in a bobbin 3 magnetic coil 1 with a winding 4 surrounds a valve sleeve 6 from the outside, the core 2 in an inner, concentric with a valve longitudinal axis 10 extending opening 11 of the valve sleeve. 6 brought in.
  • the valve sleeve 6 is elongated and thin-walled.
  • the opening 11 serves, inter alia, as a guide opening for a valve needle 14 which is axially movable along the valve longitudinal axis 10.
  • the valve sleeve 6 extends in the axial direction, for example over approximately half the total axial extent of the fuel injection valve.
  • valve seat body 15 which is attached to the valve sleeve 6, e.g. is fastened by means of a weld 8.
  • the valve seat body 15 has a fixed valve seat surface 16 as a valve seat.
  • the valve needle 14 is formed for example by a tubular armature 17, a likewise tubular needle portion 18 and a spherical valve-closing body 19, wherein the valve-closing body 19, for. is firmly connected to the needle portion 18 by means of a weld.
  • a e.g. cup-shaped spray orifice plate 21 is arranged, the bent and circumferentially encircling retaining edge 20 is directed against the flow direction upwards.
  • valve seat body 15 and spray disk 21 The solid connection of the valve seat body 15 and spray disk 21 is z. B. realized by a circumferential tight weld.
  • z. B. realized by a circumferential tight weld.
  • one or more transverse openings 22 are provided, so that the armature 17 in an inner longitudinal bore 23 by flowing fuel escape to the outside and on
  • Valve closure body 19 e.g. can flow along flats 24 to the valve seat surface 16 along.
  • Solenoid 1 the inner core 2, the outer valve shell 5 and the armature 17th
  • the armature 17 is aligned with the valve closing body 19 facing away from the end of the core 2.
  • the core 2 e.g. also serving as a pole
  • Cover part which closes the magnetic circuit, be provided.
  • the spherical valve closing body 19 acts with the valve seat surface 16 of the valve seat body 15, which tapers frustoconically in the flow direction together, which is formed in the axial direction downstream of a guide opening in the valve seat body 15.
  • the spray perforated disc 21 has at least one, for example, four ejection openings 27 formed by erosion, laser drilling or punching.
  • the insertion depth of the core 2 in the injection valve is crucial for the stroke of the valve needle 14.
  • the one end position of the valve needle 14 is fixed at non-energized magnetic coil 1 by the system of the valve closing body 19 on the valve seat surface 16 of the valve seat body 15, while the other End position of the valve needle 14 when energized solenoid 1 by the system of
  • Ankers 17 at the downstream core end results.
  • the stroke is adjusted by an axial displacement of the core 2, which is subsequently connected according to the desired position fixed to the valve sleeve 6.
  • an adjustment in the form of an adjusting sleeve 29 is inserted.
  • the adjusting sleeve 29 is used to adjust the spring preload applied to the adjusting sleeve 29 return spring 25, which in turn is supported with its opposite side to the valve needle 14 in the region of the armature 17, wherein an adjustment of the dynamic Abspritzmenge with the adjusting sleeve 29.
  • a fuel filter 32 is disposed above the adjusting sleeve 29 in the valve sleeve 6.
  • the inlet end of the valve is made of a metal
  • Fuel inlet 41 formed, which is surrounded by this stabilizing, protective and surrounding Kunststoffumspritzung 42.
  • the plastic extrusion coating 42 is sprayed, for example, in such a way that the plastic directly surrounds parts of the valve sleeve 6 and of the valve jacket 5.
  • a secure seal is achieved, for example via a labyrinth seal 46 on the circumference of the valve shell 5.
  • To Kunststoffumspritzung 42 includes a mitangespritzter electrical connector 56th
  • Figure 2 shows a partial view II of Figure 1 of the known fuel injection valve according to the prior art, which identifies the invention relevant area.
  • the guide area of the armature 17 becomes clear.
  • On the outer circumference of the movable armature 17 has in a known manner a circumferential guide collar 60 or more distributed over the circumference nubby or nose-like guide collars 60, to guide him in the valve sleeve 6 safely and without jamming.
  • the guide collar 60 or the guide collars 60 may also be integrally formed on the valve sleeve 6, in which case the outer circumference of the anchor 17 is designed with a constant diameter cylindrical.
  • the return spring 25 accordingly has a clear clearance to the wall of the flow bore 28 in the core 2 or to the wall of the longitudinal bore 23 in the armature 17.
  • Figure 3 shows a partial view of a valve according to the invention, in which the guide of the armature 17 is moved from its outer periphery inwardly into the longitudinal bore 23.
  • the armature 17 is guided during its axial longitudinal movement through a sleeve-shaped guide body 62.
  • the sleeve-shaped guide body 62 is designed thin-walled, wherein it is in the guide body 62 because of its cost-effective manufacturability, in particular a deep-drawn part.
  • the guide body 62 is made of a material with an austenitic structure, so that no magnetic short circuit between the core 2 and armature 17 is formed.
  • An austenitic material also meets the requirement for a substance with high electrical resistivity to avoid eddy currents.
  • Anchor 17 is attracted toward the core 2 to its stop surface. About the size of this to be traversed by working gap 63, the stroke of the valve needle 14 is defined. When the valve is closed, so the system of the valve closing body 19 on the valve seat surface 16, the size of the working gap 63 is maximum. To this extent the guide body 62 must be able to dip at least into the longitudinal bore 23 of the armature 17, ie the available relative movement length of the guide body 62 in the longitudinal bore 23 is equal to or greater than the maximum working gap 63.
  • the bearing is in the core 2 in this embodiment; the guide, so the floating bearing is located in the anchor 17th
  • the guide body 62 is fixedly installed in the longitudinal bore 23 of the armature 17, wherein then the axially movable armature 17 moves together with the guide body 62, which dips into the inner flow bore 28 of the core 2.
  • the solenoid coil 1 When the solenoid coil 1 is energized, the armature 17 is tightened in the direction of the core 2 up to its stop surface.
  • the size of the working gap 63 is maximum.
  • the guide body 62 must be able to dive at least into the flow bore 28 of the core 2, i. the available free travel length of the guide body 62 in the flow bore 28 is equal to or greater than the maximum working gap 63.
  • the fixed bearing is in this embodiment in the armature 17; the guide, so the movable bearing is located in the core 2. In both variants described, the guide body 62 on the fixed bearing side, for. attached by pressing.
  • Figure 4 shows a section along the line IV-IV in Figure 3 with a first embodiment of the armature 17.
  • the sleeve-shaped guide body 62 is circular, which dips into a likewise circular longitudinal bore 23 of the armature 17 or is fixed in it.
  • FIG. 5 shows a section along the line VV in Figure 3 with a second embodiment of the armature 17, which includes an exemplary VerFfixtician.
  • the guide portion of the guide body 62 is designed for example as a hexagon, which dips into a correspondingly shaped longitudinal bore 23 of the armature 17.
  • Forms the anchor 17, the fixed bearing side, the VerFfix ist may be provided in the core 2 in a comparable manner.
  • VerFDfix ist can alternatively also on other flattenings, multiple edge, Recesses or bulges, which are mounted in a corresponding manner on the armature 17 or core 2 and on the guide body 62, be realized. Vermosfix réelle is generally advantageous for the constancy of functional values of the valve, such as flow and angle and the wear behavior.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

L'invention concerne une soupape à actionnement électromagnétique, notamment une soupape d'injection de carburant pour des systèmes d'injection de carburant de moteurs à combustion interne. La soupape comprend un élément d'actionnement électromagnétique pourvu d'une bobine magnétique (1), d'un noyau fixe (2), d'une enveloppe de soupape (5) et d'un induit mobile (17) destiné à actionner un obturateur de soupape (19) qui coopère avec une surface de siège de soupape (16) prévue sur un corps de siège de soupape (15). Un corps de guidage (62) en forme de manchon est introduit dans un perçage longitudinal intérieur (23) de l'induit (17) et dans un perçage de flux intérieur (28) du pôle intérieur (2), sachant que le corps de guidage (62) est fixe dans l'induit (17) ou le pôle intérieur (2) et est guidé librement dans l'autre élément respectif. La soupape convient en particulier comme soupape d'injection de carburant à utiliser dans des systèmes d'injection de carburant de moteurs à combustion interne à compression du mélange et allumage commandé.
EP08804555A 2007-10-24 2008-09-22 Soupape à actionnement électromagnétique Not-in-force EP2212542B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710050817 DE102007050817A1 (de) 2007-10-24 2007-10-24 Elektromagnetisch betätigbares Ventil
PCT/EP2008/062629 WO2009053191A1 (fr) 2007-10-24 2008-09-22 Soupape à actionnement électromagnétique

Publications (2)

Publication Number Publication Date
EP2212542A1 true EP2212542A1 (fr) 2010-08-04
EP2212542B1 EP2212542B1 (fr) 2012-12-19

Family

ID=40032695

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08804555A Not-in-force EP2212542B1 (fr) 2007-10-24 2008-09-22 Soupape à actionnement électromagnétique

Country Status (7)

Country Link
US (1) US9038604B2 (fr)
EP (1) EP2212542B1 (fr)
JP (2) JP5517942B2 (fr)
CN (1) CN101910609B (fr)
BR (1) BRPI0817774A2 (fr)
DE (1) DE102007050817A1 (fr)
WO (1) WO2009053191A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007049945A1 (de) * 2007-10-18 2009-04-23 Robert Bosch Gmbh Brennstoffeinspritzventil
DE102009036616B4 (de) * 2009-08-07 2012-01-12 Hydraulik-Ring Gmbh Magnetventil
EP2354528B1 (fr) * 2010-01-15 2012-08-29 Continental Automotive GmbH Ensemble de soupape et soupape d'injection
CA2743043C (fr) * 2011-06-14 2012-09-18 Westport Power Inc. Soupape d'injection de carburants mixtes
DE102011084704A1 (de) 2011-10-18 2013-04-18 Robert Bosch Gmbh Ausrichtelement für ein Einspritzventil sowie Verfahren zur Herstellung eines Einspritzventils
DE102015107039B4 (de) * 2015-05-06 2020-10-15 Eto Magnetic Gmbh Elektromagnetventil sowie sicherheitsrelevantes Pneumatiksystem
JPWO2018003559A1 (ja) * 2016-07-01 2019-02-07 日立オートモティブシステムズ株式会社 燃料噴射弁

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JPS6312875A (ja) 1986-07-04 1988-01-20 Toyota Motor Corp 内燃機関用燃料噴射制御弁装置
GB2198589B (en) * 1986-11-15 1990-09-12 Hitachi Ltd Electromagnetic fuel injector
JPS63125875A (ja) * 1986-11-15 1988-05-30 Hitachi Ltd 電磁式燃料噴射弁
JPH07103837B2 (ja) * 1987-01-16 1995-11-08 株式会社日立製作所 電磁式燃料噴射弁
JPS63195379A (ja) * 1987-02-06 1988-08-12 Hitachi Ltd 電磁式燃料噴射弁
DE4137994C2 (de) 1991-11-19 1999-06-02 Bosch Gmbh Robert Elektromagnetisch betätigbares Einspritzventil mit einem Düsenträger und Verfahren zur Herstellung eines Düsenträgers eines Einspritzventils
DE19503820C2 (de) 1995-02-06 2003-10-16 Bosch Gmbh Robert Elektromagnetisch betätigbares Ventil und Verfahren zur Herstellung einer Führung an einem Ventil
JP3758719B2 (ja) 1995-10-30 2006-03-22 株式会社日立製作所 ガス用燃料噴射弁
US6302337B1 (en) * 2000-08-24 2001-10-16 Synerject, Llc Sealing arrangement for air assist fuel injectors
US6484700B1 (en) * 2000-08-24 2002-11-26 Synerject, Llc Air assist fuel injectors
DE10051016A1 (de) 2000-10-14 2002-04-18 Bosch Gmbh Robert Brennstoffeinspritzventil
US6708906B2 (en) * 2000-12-29 2004-03-23 Siemens Automotive Corporation Modular fuel injector having a surface treatment on an impact surface of an electromagnetic actuator and having an integral filter and dynamic adjustment assembly
DE10361761A1 (de) 2003-12-29 2005-07-28 Robert Bosch Gmbh Brennstoffeinspritzventil
DE102004058803A1 (de) * 2004-12-07 2006-06-08 Robert Bosch Gmbh Einspritzventil
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Also Published As

Publication number Publication date
US9038604B2 (en) 2015-05-26
JP5627654B2 (ja) 2014-11-19
JP2013007387A (ja) 2013-01-10
JP2011501035A (ja) 2011-01-06
CN101910609B (zh) 2012-07-18
US20110100332A1 (en) 2011-05-05
CN101910609A (zh) 2010-12-08
WO2009053191A1 (fr) 2009-04-30
BRPI0817774A2 (pt) 2015-03-24
JP5517942B2 (ja) 2014-06-11
EP2212542B1 (fr) 2012-12-19
DE102007050817A1 (de) 2009-04-30

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