EP1966483A1 - Soupape a actionnement electromagnetique - Google Patents

Soupape a actionnement electromagnetique

Info

Publication number
EP1966483A1
EP1966483A1 EP06829923A EP06829923A EP1966483A1 EP 1966483 A1 EP1966483 A1 EP 1966483A1 EP 06829923 A EP06829923 A EP 06829923A EP 06829923 A EP06829923 A EP 06829923A EP 1966483 A1 EP1966483 A1 EP 1966483A1
Authority
EP
European Patent Office
Prior art keywords
bobbin
core
valve
armature
insert part
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
EP06829923A
Other languages
German (de)
English (en)
Other versions
EP1966483B1 (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 EP1966483A1 publication Critical patent/EP1966483A1/fr
Application granted granted Critical
Publication of EP1966483B1 publication Critical patent/EP1966483B1/fr
Active 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
    • 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
    • F02M51/0614—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature
    • 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
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1638—Armatures not entering the winding
    • 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
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8023—Fuel injection apparatus manufacture, repair or assembly the assembly involving use of quick-acting mechanisms, e.g. clips
    • 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
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8061—Fuel injection apparatus manufacture, repair or assembly involving press-fit, i.e. interference or friction fit

Definitions

  • the invention is based on an electromagnetically actuated valve according to the preamble of the main claim.
  • FIG. 1 shows a known prior art fuel injection valve, which has a conventional three-part construction of an inner metal flow guide part and at the same time a housing component.
  • This inner valve tube is formed from an inlet port forming an inner pole, a non-magnetic intermediate part and a valve seat carrier receiving a valve seat and explained in more detail in the description of FIG.
  • the annular abutment portion formed by the wedging has a defined stop surface width or contact width, which remains largely constant over the entire service life, since a stop surface wear during continuous operation does not lead to an increase in the contact width.
  • the guide of the axially movable armature is ensured by an inner guide surface of the intermediate part.
  • the electromagnetically actuated valve according to the invention with the characterizing features of the main claim has the advantage that a simplified and cost-effective installation of the valve can be realized because it can be dispensed with the non-magnetic intermediate part.
  • the bobbin additionally assumes the function of magnetic separation in the electromagnetic circuit and increases the stability in the region of the magnetic coil. Cohesive joining methods, such as welding, which have the disadvantage of heat distortion, are not used. Rather, particularly advantageous plastic-metal press connections can be used, which are simple and very safe and reliable attachable.
  • the arrangement according to the invention also has the advantage of reducing the structure-borne noise and thus the noise development compared with known solutions.
  • the plastic-metal press connections can be produced in a particularly reliable and reliable manner if sawtooth-like structures are provided in the overlapping areas of the bobbin or insert part and the core as well as the flux guide element.
  • the plastic-metal press connections can be produced in a particularly reliable and reliable manner if sawtooth-like structures are provided in the overlapping areas of the bobbin or insert part and the core as well as the flux guide element.
  • the core and flux guide in the bobbin or in the surrounding of the bobbin insert corresponds to the sawtooth-like structure of the core or the flux with the directly opposite surface of the bobbin or surrounded by the bobbin insert by the sawtooth-like structure in the plastic penetrates and the plastic re laxiert.
  • FIG. 1 shows a fuel injection valve as an example of a solenoid-operated valve according to the prior art
  • Figure 2 shows two embodiments of a bobbin according to the invention in an enlarged view corresponding to the detail II in Figure 1
  • Figure 3 shows two further embodiments of a bobbin according to the invention with an additional insert in an enlarged view corresponding to the section III in Figure 1 and
  • the electromagnetically operable valve in the form of an injection valve for fuel injection systems of mixture-compressing, spark-ignited internal combustion engines shown in FIG. 1 has a core 2 surrounded by a magnetic coil 1 serving as a fuel inlet nozzle and inner pole, which is for example tubular here and has a length over its entire length having constant outer diameter.
  • a coil body 3 stepped in the radial direction accommodates a winding of the magnet coil 1 and, in conjunction with the core 2, enables a compact construction of the injection valve in the region of the magnet coil 1.
  • a lower core end 9 of the core 2 is concentric with a valve longitudinal axis 10 tightly connected to a tubular metal non-magnetic intermediate part 12, for example by welding and surrounds the core end 9 partially axially.
  • the stepped bobbin 3 partially overlaps the core 2 and with a step 15 of larger diameter, the intermediate part 12 at least partially axially. Downstream of the bobbin 3 and the intermediate part 12 extends a tubular valve seat support 16 which is fixed to the
  • valve seat carrier 16 In the valve seat carrier 16 extends a longitudinal bore 17, which is formed concentrically to the valve longitudinal axis 10. In the longitudinal bore 17, for example, a tubular valve needle 19 is arranged, which at its downstream end 20 with a spherical valve-closing body 21, at its periphery, for example, five Flats 22 are provided for flowing past the fuel, for example, is connected by welding.
  • Return spring 25 or closing of the injection valve is the electromagnetic circuit with the magnetic coil 1, the core 2 and an armature 27.
  • the armature 27 is connected to the valve closing body 21 remote from the end of the valve needle 19 by a weld 28 and aligned with the core 2.
  • the core 2 opposite end of the valve seat carrier 16 is in the longitudinal bore 17, a cylindrical valve seat body 29 having a fixed valve seat, tightly mounted by welding.
  • a guide opening 32 of the valve seat body 29 serves.
  • the spherical valve closing body 21 acts with the in
  • valve seat body 29 Flow direction frusto-conical tapered valve seat of the valve seat body 29 together.
  • the valve seat body 29 is concentrically and firmly connected to an injection-molded perforated disk 34, for example of cup shape.
  • injection-molded perforated disk 34 for example of cup shape.
  • the spray perforated disk 34 extends at least one, for example, four formed by eroding or punching ejection openings 39th
  • the insertion depth of the valve seat body 29 with the cup-shaped spray disk 34 determines the default setting of the stroke of the valve needle 19.
  • the one end position of the valve needle 19 is fixed at non-energized solenoid 1 by the system of the valve closing body 21 on the valve seat of the valve seat body 29, while the other end position the valve needle 19 results in excited magnetic coil 1 by the system of the armature 27 at the core end 9.
  • FIG. 2 shows a first and a second exemplary embodiment of a device according to the invention
  • FIG. 2 shows on the right a first example of a bobbin 3 having a stepped inner opening 62. At least in a certain overlap region of bobbin 3 and core 2 or valve seat carrier 16, the inner wall of the bobbin 3 is formed in the region of the inner opening 62 with a slightly inwardly offset, substantially flat surface. This surface of the bobbin 3 corresponds to a sawtooth-like structure 63 at the core end 9 of the core 2 and at the upper end of the valve seat support 16. Both the core 2 and the valve seat support 16 are used to make firm connections with the
  • Components are set in the bobbin 3, where the core 2 and the valve seat carrier 16 then rest in the pressed state.
  • the valve seat carrier 16 instead of the valve seat carrier 16, another metal component in the form of a nozzle body or an armature-side flux-conducting element can be arranged, which is pressed into the bobbin 3.
  • the guide collar 65 of the bobbin 3 thus extends into a gap 66 between the
  • the guide collar 65 has a slightly smaller inner diameter than the diameter of the longitudinal bore 17 of the valve seat carrier 16 in order to securely enclose the armature 27 during its axial movement can.
  • the leadership of the axially movable armature 27 takes place on the left side of Figure 2 in contrast, for example, by a radially inwardly projecting guide collar 67 at the top End of the valve seat support 16.
  • material of the bobbin 3 extends slightly into the gap 66 between the core end 9 of the core 2 and the valve seat support 16 inside.
  • Dispensing with a non-magnetic intermediate part advantageously takes over the bobbin 3 itself in addition to the function of magnetic separation in the electromagnetic circuit and increases the stability in the field of magnetic coil 1.
  • Cohesive joining methods, such as welding, which have the disadvantage of heat distortion, are not used ,
  • FIG. 3 a third and a fourth embodiment of the bobbin 3 according to the invention in an enlarged view corresponding to the section III in Figure 1 are shown.
  • the examples according to FIG. 3 differ in particular in that the bobbin 3 is designed in two parts.
  • the bobbin 3 has for this purpose an inner insert part 3 a, which is designed thin-walled and also stepped according to the stepped inner opening 62 of the bobbin 3 is adjusted.
  • the bobbin 3 according to the invention with its insert part 3 a made of a plastic is also characterized by the fact that it takes over the function of the known intermediate part 12.
  • FIG. 3 shows on the right a third example of a bobbin 3 having a stepped inner opening 62.
  • the inner opening 62 of the bobbin 3 is formed smooth-walled for receiving the stepped insert part 3 a, so that the bobbin 3, the insert part 3 a surrounds.
  • the inner wall of the insert part 3 a is formed in the region of the inner opening 62 a with a substantially flat surface. This surface of the insert part 3 a corresponds to a sawtooth-like structure 63 at the core end 9 of the core 2 and at the upper end of the valve seat support 16.
  • Both the core 2 and the valve seat support 16 are for establishing firm connections with the bobbin 3 in the inner opening 62 a of the insert part 3 a pressed, in such a way that the structure 63 firmly, safely and, for example, rotationally fixed hooked on the surface of the insert part 3 a and spreads.
  • the sawtooth-like structure 63 of the metal component 2, 16 thus penetrates into the plastic of the insert part 3 a, and the plastic subsequently relaxes.
  • the offset can be set for these components in the insert part 3 a, where the core 2 and the valve seat carrier 16 then rest in the pressed state.
  • the valve seat carrier 16th It is also possible to arrange another metal component in the form of a nozzle body or an armature-side flux-conducting element, which is pressed into the insert part 3a.
  • the guide of the axially movable armature 27 is on the right side of Figure 3, e.g. by a radially inwardly projecting guide collar 65 on the insert part 3 a, which is seen over the axial extent of the insert part 3 a between the two structures 63 of the insert part 3 a.
  • the guide collar 65 of the insert part 3 a thus extends into a gap 66 between the core end 9 of the core 2 and the valve seat carrier 16.
  • the guide of the axially movable armature 27 is on the left side of Figure 3 in contrast to e.g. by a radially inwardly projecting guide collar 67 at the upper end of the valve seat carrier 16.
  • material of the insert part 3 a extends slightly into the gap 66 between the core end 9 of the core 2 and the valve seat carrier 16 inside.
  • Figure 4 shows an illustration of a section through the bobbin 3 and the insert part 3 a along the line IV-IV in Figure 3.
  • the insert part 3a comprises a molding element 69, e.g. in the form of a nose, which serves as VerFfix ist and engages in a corresponding recess of the bobbin 3.
  • a molding element 69 e.g. in the form of a nose, which serves as VerFfixtician and engages in a corresponding recess of the bobbin 3.
  • the invention is not limited to an application in a fuel injection valve, but can be used in various types of electromagnetically actuated valves, in which magnetic field lines 1 are guided by a flux guide 16 via a movable armature 27 and a fixed core 2.

Landscapes

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

Abstract

Soupape à actionnement électromagnétique, en particulier soupape d'injection de carburant pour des systèmes d'injection de carburant de moteurs à combustion interne, caractérisée en ce qu'elle comporte un circuit magnétique comprenant un noyau (2), une bobine d'électro-aimant (1), un corps de bobine (3) dans lequel est logé l'enroulement de la bobine d'électro-aimant (1), un induit (27) qui actionne un obturateur de soupape (21) coopérant avec un siège de soupape fixe et qui est attiré contre le noyau (2) lorsque la bobine d'électro-aimant (1) est excitée, et un élément conducteur de flux (16) situé du côté de l'induit. Le corps de bobine (3) est conçu et placé de manière telle qu'une séparation magnétique entre le noyau (2) et l'élément conducteur de flux (16) situé du côté du noyau est assurée. Ladite soupape est particulièrement adaptée pour être utilisée dans des systèmes d'injection de carburant de moteurs à combustion interne à compression du mélange et à allumage commandé.
EP06829923.9A 2005-12-22 2006-10-30 Soupape a actionnement electromagnetique Active EP1966483B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510061410 DE102005061410A1 (de) 2005-12-22 2005-12-22 Elektromagnetisch betätigbares Ventil
PCT/EP2006/067911 WO2007073964A1 (fr) 2005-12-22 2006-10-30 Soupape a actionnement electromagnetique

Publications (2)

Publication Number Publication Date
EP1966483A1 true EP1966483A1 (fr) 2008-09-10
EP1966483B1 EP1966483B1 (fr) 2017-06-07

Family

ID=37691781

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06829923.9A Active EP1966483B1 (fr) 2005-12-22 2006-10-30 Soupape a actionnement electromagnetique

Country Status (5)

Country Link
US (1) US8833678B2 (fr)
EP (1) EP1966483B1 (fr)
JP (1) JP5039054B2 (fr)
DE (1) DE102005061410A1 (fr)
WO (1) WO2007073964A1 (fr)

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Publication number Priority date Publication date Assignee Title
DE102005061424A1 (de) * 2005-12-22 2007-07-05 Robert Bosch Gmbh Brennstoffeinspritzventil
DE102006014020A1 (de) * 2006-01-17 2007-07-19 Robert Bosch Gmbh Polrohr
DE102011080355A1 (de) * 2011-08-03 2013-02-07 Robert Bosch Gmbh Kraftstoffeinspritzventil
EP2774157B1 (fr) 2011-11-01 2021-09-08 Norgren GmbH Solénoïde doté d'un composant surmoulé
DE102012220856A1 (de) * 2012-06-29 2014-01-02 Robert Bosch Gmbh Kraftstoffinjektor mit Magnetaktor
DE102015226248A1 (de) * 2015-12-21 2017-06-22 Robert Bosch Gmbh Elektromagnetisch betätigbares Einlassventil und Hochdruckpumpe mit Einlassventil
KR101904006B1 (ko) * 2016-09-21 2018-10-05 동방테크 주식회사 일체형 솔레노이드 밸브와 일체형 노즐을 가진 인젝터
DE102017207219A1 (de) * 2017-04-28 2018-10-31 Robert Bosch Gmbh Elektromagnetisch betätigbares Einlassventil und Hochdruckpumpe mit Einlassventil
JP7251178B2 (ja) * 2019-02-04 2023-04-04 日本電産トーソク株式会社 ソレノイド装置
DE102019123517A1 (de) * 2019-09-03 2021-03-04 Thomas Magnete Gmbh Elektromagnet und Verfahren zur Herstellung desselben
DE102021133231A1 (de) * 2021-12-15 2023-06-15 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Elektromagnetische Vorrichtung, sowie Verfahren zum Herstellen einer solchen elektromagnetischen Vorrichtung
DE102022211561A1 (de) 2022-11-02 2024-05-02 Robert Bosch Gesellschaft mit beschränkter Haftung Injektor mit verbesserter Magnetspule und Verfahren zur Herstellung einer Magnetspule

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Also Published As

Publication number Publication date
DE102005061410A1 (de) 2007-06-28
US20090134348A1 (en) 2009-05-28
US8833678B2 (en) 2014-09-16
EP1966483B1 (fr) 2017-06-07
JP5039054B2 (ja) 2012-10-03
WO2007073964A1 (fr) 2007-07-05
JP2009520148A (ja) 2009-05-21

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