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EP0718491B1 - Procede de fabrication d'une soupape - Google Patents

Procede de fabrication d'une soupape Download PDF

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Publication number
EP0718491B1
EP0718491B1 EP95114688A EP95114688A EP0718491B1 EP 0718491 B1 EP0718491 B1 EP 0718491B1 EP 95114688 A EP95114688 A EP 95114688A EP 95114688 A EP95114688 A EP 95114688A EP 0718491 B1 EP0718491 B1 EP 0718491B1
Authority
EP
European Patent Office
Prior art keywords
valve seat
valve
shaped body
seat body
spray disc
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.)
Expired - Lifetime
Application number
EP95114688A
Other languages
German (de)
English (en)
Other versions
EP0718491A1 (fr
Inventor
Peter Dipl.-Ing. Romann (Fh)
Siegfried Dr. Ing. Rohde
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 EP0718491A1 publication Critical patent/EP0718491A1/fr
Application granted granted Critical
Publication of EP0718491B1 publication Critical patent/EP0718491B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • 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
    • 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
    • F02M61/1853—Orifice plates

Definitions

  • the invention is based on a method according to the genus Claim 1.
  • a valve closing body with one in a valve seat body trained valve seat surface cooperates. Downstream the valve seat surface is cup-shaped in a recess trained spray plate attached after has a bulge downstream.
  • the invention Method with the features of claim 1 has the advantage that in a simple manner the collecting space between the valve closing body and the bulge the spray plate reduced in volume and without abrupt changes in cross-section can be formed, whereby a more favorable flow through the collecting space and achieved better running behavior of the internal combustion engine becomes.
  • Embodiments of the invention are in the drawing shown in simplified form and in the following Description explained in more detail.
  • 1 shows in one first embodiment a partially shown Fuel injector with an inventive manufactured spray plate, Figures 2 to 4 individual Manufacturing steps of the exemplary embodiment according to FIG. 1, Figures 5 to 7 individual manufacturing steps according to a second embodiment.
  • FIG. 1 shows an example of what is otherwise already known Valve in the form of a fuel injector for Fuel injection systems from mixture compressors spark-ignited internal combustion engines partially shown that is designed according to the invention as the first exemplary embodiment.
  • the injection valve has a tubular valve housing 1 in which A longitudinal opening 3 concentric with a valve longitudinal axis 2 is trained. In the longitudinal opening 3 is a z.
  • tubular valve needle 5 arranged on her downstream end 6 with a spherical Valve closing body 7, for example five on the circumference circular flats 8 are provided, is connected.
  • the injection valve is actuated in a known manner for example electromagnetic.
  • For the axial movement of the Valve needle 5 and thus for opening against the spring force of a Return spring, not shown, or closing the Injection valve serves an indicated electromagnetic Circle with a magnetic coil 10, an armature 11 and a core 12.
  • the armature 11 is connected to the valve closing body 7 opposite end of the valve needle 5 by z. B. a weld connected by means of a laser and aligned with the core 12.
  • valve seat body 16 To guide the valve closing body 7 during the axial movement serves a guide opening 15 of a valve seat body 16.
  • the scope of the Valve seat body 16 has a slightly smaller one Diameter on than the longitudinal opening 3 of the valve housing 1.
  • An its one, the valve closing body 7 facing away, lower The end face 17 is the valve seat body 16 with a base part 20 a z.
  • cup-shaped spray plate 21st concentrically and firmly connected so that the bottom part 20 with its upper end face 19 on the lower end face 17 of Valve seat body 16 abuts.
  • the bottom part 20 of the spray perforated disk 21 In its central area 24 the bottom part 20 of the spray perforated disk 21 has at least one, for example four formed by eroding or stamping Spray openings 25 on.
  • a circumferential holding edge 26 which is in extends axially away from the valve seat body 16 and is bent conically outwards until its end 27. Since the Circumferential diameter of the valve seat body 16 is smaller than that Diameter of the longitudinal opening 3 of the valve housing 1 is only between the longitudinal opening 3 and the slightly conical externally curved holding edge 26 of the spray plate 21 a radial pressure.
  • the insertion depth of the valve seat body 16 and cup-shaped Spray plate 21 existing valve seat part in the Longitudinal opening 3 determines the default stroke Valve needle 5, since the one end position of the valve needle 5 at non-excited solenoid 10 by the system of Valve closing body 7 on a valve seat surface 29 of the Valve seat body 16 is fixed.
  • the other end position of the Valve needle 5 is, for example, when solenoid 10 is excited fixed by the installation of the anchor 11 on the core 12. Of the Path between these two end positions of the valve needle 5 thus represents the hub.
  • the holding edge 26 of the spray disk 21 tightly and firmly connected to the wall of the longitudinal opening 3.
  • a circumferential weld seam 30 intended.
  • the bottom part 20 tightly the end face 17 of the valve seat body 16 connected.
  • valve seat body 16 and spray orifice plate 21 as well as from spray plate 21 and valve housing 1 required so that the fuel is not between the Longitudinal opening 3 of the valve housing 1 and the circumference of the Valve seat body 16 through to the spray openings 25 or between the longitudinal opening 3 of the valve seat support 1 and the Holding edge 26 of the cup-shaped spray perforated disk 21 therethrough directly into an air intake line of the internal combustion engine can flow.
  • the spherical valve closing body 7 acts with the in Direction of flow tapering in the shape of a truncated cone Valve seat surface 29 of the valve seat body 16 together, which in axial direction between the guide opening 15 and the lower End face 17 of the valve seat body 16 is formed.
  • Valve seat body 16 has a magnet coil 10 facing Valve seat body opening 34, which has a larger diameter has as the diameter of the guide opening 15 of the Valve seat body 16.
  • valve closing body 7 For exact guidance of the valve closing body 7 and thus the Valve needle 5 during the axial movement is the diameter the guide opening 15 formed so that the spherical Valve closing body 7 outside of its flattenings 8 Passing through guide opening 15 with a small radial distance.
  • the central area 24 of the bottom part 20 of the Spray plate 21 is in the downstream direction, that is in the direction pointing away from the valve closing body 7 the level of the bottom part 20 bent out so that there is a Bulge 36 results in the central area.
  • the valve seat surface 29 and the A bulge 37 is formed in the wall of the bulge 36, in the lifted off from the valve seat surface 29 Valve closing body 7 the fuel first arrives before he metered through the spray orifices 25 and into the Air intake line of the internal combustion engine is hosed down.
  • the bulge 36 is in the first embodiment Figure 1 formed in the form of a spherical shell, the inner wall 38 of the bulge 36 directly into the Valve seat surface 29, that is, without a shoulder, passes over.
  • the volume the collecting space 37 is by suitable choice of Course of the valve seat surface 29 and the inner wall 38 the bulge 36 with respect to the surface of the spherical valve closing body 37 as low as possible held.
  • FIGS 2 to 4 show in partial representations Process steps to achieve the bulge 36 and the Collecting space 37 according to the first embodiment Figure 1.
  • Figures 2 to 4 show in partial representations Process steps to achieve the bulge 36 and the Collecting space 37 according to the first embodiment Figure 1.
  • the same and equivalent parts find the same reference numerals as used in Figure 1 were used.
  • the valve housing 1 assembled state of the valve seat body 16 is initially which is completely flat, at least in its base part 20
  • Spray plate 21 with its upper end face 19 to the End face 17 of the valve seat body 16 created.
  • Which conical in the direction of flow in the form of a conical jacket tapered valve seat surface 29 ends directly at the upper end face 19 of the spray plate 21 and encloses the central region 24 of the spray orifice plate, from from which the spray openings 25 also emanate.
  • the Spray plate 21 is by means of the circumferential weld seam 31 outside the central area 24 close to the End face 17 of the valve seat body 16 connected.
  • a ball for example Valve closing body 7, as dashed in Figure 2 is inserted into the valve seat body 16, so he would on the upper face 19 of the spray orifice plate 21 but not with the valve seat surface 29 in Come into contact because of the diameter of the spherical Valve closing body 7 and the inclination of the valve seat surface 29 are designed so that the valve closing body 7 at System on the valve seat surface 29 on the end face 17 of the Valve seat body 16 protrudes.
  • valve closing body 7 a molded body 40 in the Valve seat body 16 inserted and to abut the upper Bring end face 19 of the spray orifice plate 21.
  • the Shaped body 40 has, for example, the same contour as that Valve closing body 7, that is in the embodiment Contour of a sphere, but it has a smaller one Cross section than the valve closing body 7. Then the Shaped body by means of in the direction of the spray orifice plate 21 acting on the molded body 40 force 41 so long the spray plate 21 moves until the Spray plate 21 in its central area 24 through plastic deformation the bulge 36 with the contour of the Shaped body 40 is formed and the inner wall 38 of the Bulge 36 directly into the wall of the Valve seat surface 29 merges.
  • the Radius of the spherical shaped body 40 may be chosen so that after completion of the bulge 36 a cone representing valve seat surface 29 tangentially into the adjacent inner wall 38 of the bulge 36 merges.
  • the one initially showing parallel walls Spray openings 25 deform at the Formation of the bulge 36 such that it in Flow direction a flared shape accept. So expanding in the direction of flow Spray openings, however, have the advantage that them to stable flows and a good one Perform fuel processing.
  • valve seat surface 29 and the cross section of the molded body 40 can also be chosen so that not only the Spray plate 21 in its central region 24 in the Generation of the bulge 36 is plastically deformed, but also an edge region of the valve seat body 16 in the Near the end face 17, which also gives an immediate seamless transition between the valve seat and the inner wall 38 of the bulge is generated. Finally, after removing the molded body 40, the Valve seat body in the longitudinal opening 3 of the valve housing 1 introduced and by means of the weld 30 in the above described way attached therein.
  • Figure 4 shows one Valve seat body 16 with an orifice plate attached to it 21, which has a bulge 36 produced according to the invention, in that of the adjacent valve seat surface 29 Valve closing body 7 projecting beyond the end face 17 extends, whereby a collecting space 37 with as much as possible low volume is achieved.
  • Shaped body 40 has approximately the cross section of the central one Area 24 or is slightly larger.
  • the conical contour of the shaped body 40 ' is now exposed to the force 41 moves the molded body downward and deforms it plastically the spray plate 21 in its central Area 24 so that there is a conical bulge 36 results, the inner wall 38 directly into the Valve seat surface 29 merges.
  • Figure 7 shows the conical Valve closing body 7 'when in contact with the valve seat surface 29, the tip over the end face 17 of the Valve seat body 16 into the conical bulge 36 protrudes, resulting in the smallest possible volume of the Collection room 37 results.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Lift Valve (AREA)

Claims (4)

  1. Procédé de fabrication d'une soupape, en particulier d'un injecteur de carburant pour des installations d'injection de carburant de moteurs à combustion interne, qui comprend un boítier d'injecteur (1), un corps d'obturation (7, 7') mobile de l'injecteur, qui coopère avec une surface (29) de siège de l'injecteur , qui est constituée dans un corps (16) de siège de l'injecteur , un disque d'éjection à trous (21) disposé en aval de la surface (29) du siège de l'injecteur sur une face frontale (17) du corps (7, 7') du siège de l'injecteur, disque d'éjection à trous (21) qui présente dans une zone centrale (24) dans la direction située à l'opposé du corps (7, 7') du siège de l'injecteur une courbure (36), en saillie vers l'extérieur, dans laquelle pénètre le corps (7, 7') d'obturation de l'injecteur et dans laquelle est prévu au moins un orifice d'éjection (25),
    caractérisé en ce que
    l'on applique tout d'abord le disque d'éjection à trous (21) plan au moins dans sa zone centrale (24) sur la face frontale (17) du corps (16), qui se trouve en aval de la surface (29) du siège de l'injecteur, face frontale (17) jusqu'à laquelle s'étend la surface (29) du siège de l'injecteur, ensuite on fixe le disque d'éjection à trous (21) en dehors de la zone centrale (24) sur la face latérale (17) du corps (16) du siège de l'injecteur , puis on introduit dans le corps (16) du siège de l'injecteur un corps de moulage (40, 40'), qui a le même contour, mais toutefois une plus petite section transversale que le corps d'obturation (7, 7') de l'injecteur, et on le met sur la zone centrale (24) du disque d'éjection à trous (21), puis au moyen d'une force (41), qui s'exerce en direction du disque d'éjection à trous (21) sur le corps de moulage (40, 40'), on déplace le corps de moulage (40, 40') sur le disque d'éjection à trous (21) jusqu'à ce que la courbure (36) en saillie vers l'extérieur, soit formée avec le contour du corps de moulage (40, 40') sur le disque d'éjection à trous (21) dans sa zone centrale (24) par déformation plastique et que la paroi (38) de la courbure (36), en saillie vers l'extérieur, qui est tournée vers le corps de moulage (40, 40'), se transforme directement en la paroi de la surface (29) du siège de l'injecteur, on enlève ensuite le corps de moulage (40, 40') du corps (16)du siège de l'injecteur et pour terminer on introduit le corps (16) du siège de l'injecteur dans le boítier (1) de l'injecteur et on le fixe dedans.
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    le corps de moulage (40), tourné vers le disque d'éjection à trous (21), a un contour rond
  3. Procédé selon la revendication 2,
    caractérisé en ce que
    le corps de moulage (40) a au moins en partie le contour d'une bille.
  4. Procédé selon la revendication 1,
    caractérisé en ce que
    le corps de moulage (40') tourné vers le disque d'éjection à trous (21) a au moins en partie le contour d'un cône.
EP95114688A 1994-12-20 1995-09-19 Procede de fabrication d'une soupape Expired - Lifetime EP0718491B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4445358 1994-12-20
DE4445358A DE4445358A1 (de) 1994-12-20 1994-12-20 Ventil und Verfahren zur Herstellung eines Ventiles

Publications (2)

Publication Number Publication Date
EP0718491A1 EP0718491A1 (fr) 1996-06-26
EP0718491B1 true EP0718491B1 (fr) 1998-12-23

Family

ID=6536312

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95114688A Expired - Lifetime EP0718491B1 (fr) 1994-12-20 1995-09-19 Procede de fabrication d'une soupape

Country Status (6)

Country Link
US (1) US5746376A (fr)
EP (1) EP0718491B1 (fr)
JP (1) JPH08254170A (fr)
KR (1) KR960021161A (fr)
BR (1) BR9505960A (fr)
DE (2) DE4445358A1 (fr)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6360960B1 (en) 2000-05-17 2002-03-26 Siemens Automotive Corporation Fuel injector sac volume reducer
DE10055513B4 (de) * 2000-11-09 2006-03-09 Robert Bosch Gmbh Brennstoffeinspritzventil
DE10118164B4 (de) * 2001-04-11 2007-02-08 Robert Bosch Gmbh Brennstoffeinspritzventil
US6776353B2 (en) 2001-12-17 2004-08-17 Siemens Vdo Automotive Corporation Fuel injector valve seat assembly with radially outward leading fuel flow passages feeding multi-hole orifice disk
WO2004063555A1 (fr) * 2003-01-09 2004-07-29 Siemens Vdo Automotive Corporation Commande de modele d'injection par des orifices non angulaires formes sur un disque doseur generalement plan et reorientes sur un disque de dosage d'injection de carburant sensiblement embreve
US6948665B2 (en) * 2003-06-30 2005-09-27 Siemens Vdo Automotive Corporation Fuel injector including an orifice disc, and a method of forming the orifice disc with an asymmetrical punch
US7163159B2 (en) * 2003-07-15 2007-01-16 Siemens Vdo Automotive Corporation Fuel injector including a compound angle orifice disc
US7744020B2 (en) * 2003-07-21 2010-06-29 Continental Automotive Systems Us, Inc. Fuel injector including an orifice disc, and a method of forming the orifice disc including punching and shaving
US7048202B2 (en) * 2004-03-04 2006-05-23 Siemens Vdo Automotive Corporation Compound-angled orifices in fuel injection metering disc
US7159436B2 (en) * 2004-04-28 2007-01-09 Siemens Vdo Automotive Corporation Asymmetrical punch
US7201329B2 (en) * 2004-04-30 2007-04-10 Siemens Vdo Automotive Corporation Fuel injector including a compound angle orifice disc for adjusting spray targeting
US7086615B2 (en) 2004-05-19 2006-08-08 Siemens Vdo Automotive Corporation Fuel injector including an orifice disc and a method of forming an oblique spiral fuel flow
US20060157595A1 (en) * 2005-01-14 2006-07-20 Peterson William A Jr Fuel injector for high fuel flow rate applications
US20060192036A1 (en) * 2005-02-25 2006-08-31 Joseph J M Fuel injector including a multifaceted dimple for an orifice disc with a reduced footprint of the multifaceted dimple
JP2006242046A (ja) * 2005-03-01 2006-09-14 Hitachi Ltd 燃料噴射弁
WO2007091536A1 (fr) * 2006-02-07 2007-08-16 Mikuni Corporation Soupape d'injection de carburant
WO2008093387A1 (fr) * 2007-01-29 2008-08-07 Mitsubishi Electric Corporation Injecteur de carburant
WO2008117459A1 (fr) * 2007-03-27 2008-10-02 Mitsubishi Electric Corporation Soupape d'injection de carburant
JP4491474B2 (ja) * 2007-05-31 2010-06-30 日立オートモティブシステムズ株式会社 燃料噴射弁及びそのストローク調整方法
JP4808801B2 (ja) 2009-05-18 2011-11-02 三菱電機株式会社 燃料噴射弁
DE102010029298A1 (de) * 2010-05-26 2011-12-01 Robert Bosch Gmbh Ventilanordnung zur Dosierung eines fluiden Mediums in einen Abgasstrang einer Brennkraftmaschine
JP2014066186A (ja) * 2012-09-26 2014-04-17 Hitachi Automotive Systems Ltd 燃料噴射弁
CN106799564A (zh) * 2015-11-26 2017-06-06 安徽纵横泵阀制造有限公司 一种旋转式止回水阀的设计生产方法
DE102016219782A1 (de) * 2016-10-12 2018-04-12 Ford Global Technologies, Llc Variabel einstellbares Tellerventil
US10865754B2 (en) * 2017-04-05 2020-12-15 Progress Rail Services Corporation Fuel injector having needle tip and nozzle body surfaces structured for reduced sac volume and fracture resistance
DE102019107836A1 (de) * 2018-06-12 2019-12-12 Marco Systemanalyse Und Entwicklung Gmbh Jet-Ventil
CN110252591A (zh) * 2018-06-12 2019-09-20 玛珂系统分析和开发有限公司 喷射阀

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5546576U (fr) * 1978-09-22 1980-03-26
EP0377682B1 (fr) * 1987-12-23 1994-12-14 Siemens Aktiengesellschaft Procédé de fabrication d'un disque à orifice à bord mince pour des injecteurs de carburant
DE3841142C2 (de) * 1988-12-07 1994-09-29 Bosch Gmbh Robert Einspritzventil
DE4123692C2 (de) * 1991-07-17 1995-01-26 Bosch Gmbh Robert Brennstoffeinspritzventil
US5174505A (en) * 1991-11-01 1992-12-29 Siemens Automotive L.P. Air assist atomizer for fuel injector
DE4221185A1 (de) 1992-06-27 1994-01-05 Bosch Gmbh Robert Spritzlochscheibe für ein Ventil und Verfahren zur Herstellung
US5484108A (en) * 1994-03-31 1996-01-16 Siemens Automotive L.P. Fuel injector having novel multiple orifice disk members

Also Published As

Publication number Publication date
JPH08254170A (ja) 1996-10-01
US5746376A (en) 1998-05-05
KR960021161A (ko) 1996-07-18
DE59504628D1 (de) 1999-02-04
BR9505960A (pt) 1997-12-23
EP0718491A1 (fr) 1996-06-26
DE4445358A1 (de) 1996-06-27

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