EP1200729B1 - Procede de reglage de la levee de la soupape d'injection - Google Patents

Procede de reglage de la levee de la soupape d'injection Download PDF

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Publication number
EP1200729B1
EP1200729B1 EP00958155A EP00958155A EP1200729B1 EP 1200729 B1 EP1200729 B1 EP 1200729B1 EP 00958155 A EP00958155 A EP 00958155A EP 00958155 A EP00958155 A EP 00958155A EP 1200729 B1 EP1200729 B1 EP 1200729B1
Authority
EP
European Patent Office
Prior art keywords
valve
elevation
deformation
tool
valve seat
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
EP00958155A
Other languages
German (de)
English (en)
Other versions
EP1200729A1 (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 EP1200729A1 publication Critical patent/EP1200729A1/fr
Application granted granted Critical
Publication of EP1200729B1 publication Critical patent/EP1200729B1/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
    • 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
    • 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
    • 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 a setting method the valve lift of an injection valve according to the genus of Claim 1.
  • DE 196 40 782 A1 already describes a method for setting the valve lift on an injection valve known, in which the valve seat support is plastically deformed is by a on the circumference of the valve seat carrier Constriction is introduced. Basically starting from a tubular or sleeve-shaped cylindrical Component made the deformation. The deformation of the The valve seat carrier is therefore immediately set of the valve lift.
  • the inventive method for adjusting the Valve strokes of an injection valve with the characteristic ones has the advantage that simple Way the stroke of the valve needle is adjustable without that there is a risk of unwanted force prevails on the valve seat element.
  • valve lift can be very advantageous sensitive and defined. Compared to the Known stroke adjustment methods allow the invention Process a reliable setting with even tighter Tolerances.
  • the ones causing the deformation of the elevation Deformation tools have an advantageous effect in radial direction on the increase. Will with one Deforming tool to increase an axial force applied, so the deformation tool be designed to increase the direction of deformation is radial anyway.
  • Embodiments of the invention are in the drawing shown in simplified form and in the following Description explained in more detail.
  • 1 shows it Embodiment of an injection valve on which one Stroke adjustment according to the invention is possible
  • Figure 2 a first example of a deformation tool
  • Figure 3 a second example of a deformation tool
  • Figure 4 third example of a deformation tool
  • FIG. 5 fourth example of a deformation tool.
  • the electromagnetic part shown in Figure 1 actuatable valve in the form of a Fuel injection valve for fuel injection systems of mixture-compressing, spark-ignited Internal combustion engines are particularly suitable for direct Injecting fuel into a not shown Combustion chamber.
  • the fuel injector has one of one Magnetic coil 1 surrounding tubular core 2 as a so-called Pole.
  • a bobbin 3 takes a winding Magnetic coil 1 and allows in connection with the core 2 a particularly compact structure of the injection valve in the Magnetic coil area 1.
  • excitable actuators are also suitable instead of an electromagnetic circuit Piezo actuators or magnetostrictive actuators.
  • a valve longitudinal axis 10 With a lower core end 9 of the core 2 is concentric a valve longitudinal axis 10 tightly a tubular metal Intermediate part 12 connected, for example, by welding and partially surrounds the core end 9 axially. Downstream of the Coil body 3 and the intermediate part 12 extends largely tubular, but for the application of the inventive method for adjusting the valve lift Preformed valve seat support 16, which is fixed, for example is connected to the intermediate part 12.
  • a thin-walled sleeve representing valve seat support 16 extends a longitudinal opening 18.
  • the longitudinal opening 18 there is e.g. rod-shaped Valve needle 19, one at its downstream end Has valve closing section 21, arranged.
  • the injection valve is actuated in a known manner Way e.g. electromagnetically.
  • a return spring 25 or closing the injection valve serves the electromagnetic circuit with the magnetic coil 1, the core 2 and an anchor 26.
  • the anchor 26 is with the Valve closing section 21 facing away from the end of the valve needle 19 connected by a weld seam and onto the core 2 aligned.
  • opposite end of the valve seat support 16 is in the Longitudinal opening 18 through a guide and seat unit Welding tightly assembled.
  • This guide and seat unit comprises three disk-shaped Elements that face each other directly lie.
  • a guide element 27, a swirl element 28 and a Valve seat element 29 follow each other in the downstream direction.
  • the valve seat element 29 projects with a stepped outer contour only partially into the longitudinal opening 18 into it.
  • the valve seat element 29 firmly and tightly with the Valve seat support 16 on its downstream end face connected.
  • the guide element 27, the swirl element 28 and the valve seat element 29 are also fixed to one another connected, with a weld on the outer circumference of the offers three elements 27, 28 and 29.
  • a guide opening serves along the longitudinal valve axis 10 of the intermediate part 12 and a guide opening in Guide element 27.
  • the downstream e.g. conical tapered valve closing section 21 acts with a tapered in the direction of flow Valve seat surface 32 of the valve seat element 29 together.
  • the illustrated embodiment is the outlet opening 33 inclined to the valve longitudinal axis 10, which in a. convex curved spray area of the Valve seat element 29 ends.
  • the outlet opening 33 fuel flowing through is swirling, because it in front of the Valve seat surface 32 in the swirl element 28 in which for example, several tangential swirl channels are provided, an atomization-improving Swirl component is impressed.
  • An end position of the valve needle 19 is when it is not excited Solenoid 1 through the installation of the valve closing section 21 fixed to the valve seat surface 32 while the other end position of the valve needle 19 when excited Magnetic coil 1 by the armature 26 resting on the core end 9 of core 2 results.
  • the distance between the two End positions represent the valve lift according to the invention is adjustable.
  • the magnet coil 1 is one Cup-shaped valve housing 35 surround the so-called External pole serves. With its valve seat element 29 facing lower end, the valve housing 35 is firmly on the valve seat support 16 e.g. by means of a weld seam applied.
  • valve seat carrier 16 encloses this axially movable valve part consisting of armature 26 and valve needle 19 with the valve closing section 21 and partially Management and seating unit.
  • the valve seat support 16 is elongated, the valve seat support 16 even half or more of the total axial Extension length of the injector can make up. With this design of the valve seat support 16 can Injection point of the injection valve can be set far ahead what is due to certain internal combustion engines idiosyncratic design and limited installation space may be desirable.
  • the Fuel injection valve as a direct injection valve can the spray point optimally to a desired location of the Combustion chamber.
  • Valve seat support 16 By using the relatively cheap sleeve for the Valve seat support 16 it becomes possible to in Injector valves usual turned parts, due to their larger outer diameter more voluminous and at the Manufacturing are more expensive than the valve seat support 16, too dispense.
  • sealing element 41 is used for Seal between the circumference of the injector and a valve seat, not shown, in the cylinder head or on an intake line of the internal combustion engine.
  • the Sealing element 41 is e.g. made of a plastic, such as PTFE manufactured.
  • the valve seat carrier 16 is characterized in that at least one radially outward elevation or Curvature in the form of a bead 43 is provided rotates completely in the circumferential direction, for example. about the axial length of the valve seat support 16 can also a plurality of radial beads 43 may be formed. In addition to the at least one radially outward bead 43 can in a different range of the Valve seat support 16 also several distributed over the circumference, the stiffness-increasing, recessed shapes be provided by beads 44. These beads 44 have a certain length. In the example by deep drawing or from a tube by forming manufactured valve seat support 16, the bead 43 e.g. introduced by rolling. Before the actual process the setting of the valve lift is therefore a preformed one Component before, the at least one directed outwards has radial increase in the form of a bead 43.
  • valve seat support 16 plastically deformed, and in the area of the bead 43. It is, as the arrow 45 indicates with a radial force on the Bead 43 made a deformation of the bead 43.
  • the valve seat carrier 16 can be moved axially Change length very delicately and in a defined way, especially enlarge, which allows a very precise setting of the Valve strokes are possible.
  • FIG. 2 shows a deformation tool 48 shown, which consists of two half-shells 49. Both Half-shells 49 have an inner curved area, with which they the bead 43 of the valve seat support 16 via a can encompass a large part of the circumference. According to the Direction of arrow becomes a radial with the half-shells 49 Force applied to the valve seat support 16 so that this changes in its axial length.
  • a comparable deformation tool 48 is shown in FIG. 3 shown, but instead of two half shells 49 four tool segments 50 on the valve seat support 16 in the area attack the bead 43.
  • the arrows again illustrate the direction of the force.
  • the four tool segments 50 encompass approximately 1 ⁇ 4 of the circumference of the bead 43.
  • Figure 4 is intended to illustrate two possible deformations.
  • the valve is not shown in FIG Fixed in place, and the deformation tool 48th with at least one roller 51 is in the direction of - Moves the radial arrow to the valve seat support 16 and encircles the valve seat support 16 to deform the bead 43 according to the arrow in the circumferential direction.
  • the deformation tool 48th with at least one roller 51 is in the direction of - Moves the radial arrow to the valve seat support 16 and encircles the valve seat support 16 to deform the bead 43 according to the arrow in the circumferential direction.
  • a second Variant can also fix the rolling tool 48, 51 be, and the valve is on the rolling tool 48, 51st moved and set in a rotational movement. Is possible also that both the valve with its Valve seat carrier 16 as well as rolling tool 48, 51 moved towards each other and both are set in rotation.
  • FIG. 5 A further possibility of deformation is shown in FIG. 5 the force on the bead 43 is carried out by the Deformation tool 48 in the axial direction.
  • the Deformation tool 48 consists of at least two Tool segments 52, each having a conical inner surface 53 which, when using the deformation tool 48 are directed towards the valve seat support 16.
  • the taper the tool segments 52 runs in such a way that with one axially moving the tool segments 52 the bead 43 in their radial height is reduced.
  • the deformation of the bead 43 can also be caused by magnetic shaping respectively. In the area of the bead 43, a limited strong magnetic field generated. Since the Valve seat support 16 is ferritic, for example; can the deformation of the bead 43 via the strength of the magnetic field and thus the valve lift can be set specifically.
  • the accuracy of the valve lift setting can be determined by the geometry of the bead 43 (such as the flank angle and the radius) or by the sheet thickness of the valve seat support 16 can be influenced.

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

Claims (10)

  1. Procédé de réglage de la course de soupape d'un injecteur, notamment d'un injecteur de carburant pour moteurs à combustion interne, comprenant une entrée de carburant, un dispositif d'actionnement excitable permettant de déplacer une aiguille de soupape munie d'un organe de fermeture de soupape, un siège de soupape fixe formé au niveau d'un élément de siège de soupape coopérant avec l'organe de fermeture de soupape pour ouvrir et fermer la soupape, une sortie de carburant, et dont une partie de raccordement (16) présentant une ouverture longitudinale intérieure (18) pour recevoir l'aiguille de soupape (19) est reliée directement ou indirectement à l'élément de siège de soupape, l'aiguille de soupape décrivant une course entre une position de fermeture de soupape et une position d'ouverture de soupape,
    caractérisé en ce que
    en partie de raccordement (16) est préformée en formant au moins une élévation (43) saillant radialement vers l'extérieur, et pour modifier la course de l'aiguille de soupape (19) l'élévation (43) est déformée plastiquement en direction radiale vers l'ouverture longitudinale (18).
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    l'élévation est formée au niveau de la partie de raccordement (16) sous la forme d'un bourrelet circulaire (43).
  3. Procédé selon la revendication 1 ou 2,
    caractérisé en ce que
    l'élévation (43) est obtenue par roulage.
  4. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    la déformation de l'élévation (43) est réalisée à l'aide d'un outil de déformation (48) composé de deux demi-coquilles (49).
  5. Procédé selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce que
    la déformation de l'élévation (43) est réalisée à l'aide d'un outil de déformation (48) qui présente quatre segments d'outil (50).
  6. Procédé selon la revendication 4 ou 5,
    caractérisé en ce que
    les segments d'outils (49, 50) présentent des zones bombées intérieures par lesquelles ils entourent l'élévation (43).
  7. Procédé selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce que
    la déformation de l'élévation (43) est réalisée à l'aide d'un outil de déformation (48) qui en tant qu'outil de roulage présente au moins un rouleau appliqué sur l'élévation (43).
  8. Procédé selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce que
    la déformation de l'élévation (43) est réalisée à l'aide d'un outil de déformation (48) composé d'au moins deux segments d'outil (52) présentant des surfaces intérieures (53) coniques.
  9. Procédé selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce que
    la déformation de l'élévation (43) est réalisée par déformation magnétique.
  10. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    la partie de raccordement (16) est réalisée à partir d'un matériau ferritique conducteur du flux magnétique.
EP00958155A 1999-07-14 2000-07-14 Procede de reglage de la levee de la soupape d'injection Expired - Lifetime EP1200729B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19932762A DE19932762A1 (de) 1999-07-14 1999-07-14 Verfahren zur Einstellung des Ventilhubs eines Einspritzventils
DE19932762 1999-07-14
PCT/DE2000/002337 WO2001004487A1 (fr) 1999-07-14 2000-07-14 Procede de reglage de la levee de la soupape d'injection

Publications (2)

Publication Number Publication Date
EP1200729A1 EP1200729A1 (fr) 2002-05-02
EP1200729B1 true EP1200729B1 (fr) 2004-10-06

Family

ID=7914649

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00958155A Expired - Lifetime EP1200729B1 (fr) 1999-07-14 2000-07-14 Procede de reglage de la levee de la soupape d'injection

Country Status (7)

Country Link
US (1) US6786432B1 (fr)
EP (1) EP1200729B1 (fr)
JP (1) JP2003504551A (fr)
KR (1) KR20020027487A (fr)
BR (1) BR0013158A (fr)
DE (2) DE19932762A1 (fr)
WO (1) WO2001004487A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60304442T2 (de) * 2003-01-24 2006-08-24 Siemens Vdo Automotive S.P.A., Fauglia Messvorrichtung mit Durchfluss-Kalibriereinrichtung sowie Verfahren zur Einstellung der Durchflussmenge der Messvorrichtung
US8870742B2 (en) 2006-04-06 2014-10-28 Ethicon Endo-Surgery, Inc. GUI for an implantable restriction device and a data logger
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
DE102007031981B4 (de) 2007-07-10 2023-01-12 Robert Bosch Gmbh Magnetventil
US8024861B2 (en) * 2008-05-16 2011-09-27 Delphi Technologies, Inc. External stroke/flow setting method for fuel injectors
DE102008002487A1 (de) * 2008-06-18 2009-12-24 Robert Bosch Gmbh Verfahren zur Hubeinstellung eines Ventils
CN101592107B (zh) * 2009-04-24 2011-06-15 靳北彪 发动机用壳体形变燃油喷射器
CN101555852B (zh) * 2009-04-30 2011-07-20 靳北彪 发动机用直控式壳体形变流体喷射器
ITBO20090787A1 (it) * 2009-12-09 2011-06-10 Magneti Marelli Spa Metodo di calibrazione della corsa di un equipaggio mobile di un iniettore elettromagnetico di carburante
JP5537493B2 (ja) * 2011-05-13 2014-07-02 日立オートモティブシステムズ株式会社 燃料噴射弁のストローク調整方法及び燃料噴射弁

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2633820A1 (de) * 1976-07-28 1978-02-02 Kloeckner Humboldt Deutz Ag Abgeschirmte hochdruckleitung
US4528959A (en) * 1984-01-23 1985-07-16 Deere & Company Seal for an internal combustion engine
DE4026721A1 (de) 1990-08-24 1992-02-27 Bosch Gmbh Robert Einspritzventil und verfahren zur herstellung eines einspritzventils
US5365906A (en) * 1993-12-20 1994-11-22 Chrysler Corporation Fluid flow check valve for fuel system
DE19640782A1 (de) 1996-10-02 1998-04-09 Bosch Gmbh Robert Ventil und Verfahren zur Herstellung eines Ventiles
DE19723953A1 (de) * 1997-06-06 1998-12-10 Bosch Gmbh Robert Brennstoffeinspritzventil
DE19744739A1 (de) 1997-10-10 1999-04-15 Bosch Gmbh Robert Brennstoffeinspritzventil
JP3922413B2 (ja) * 1998-05-12 2007-05-30 株式会社デンソー 燃料噴射弁及びその組立方法
DE19962968A1 (de) * 1999-12-24 2001-06-28 Bosch Gmbh Robert Ausgleichselement

Also Published As

Publication number Publication date
US6786432B1 (en) 2004-09-07
BR0013158A (pt) 2002-04-09
EP1200729A1 (fr) 2002-05-02
WO2001004487A1 (fr) 2001-01-18
KR20020027487A (ko) 2002-04-13
JP2003504551A (ja) 2003-02-04
DE50008142D1 (de) 2004-11-11
DE19932762A1 (de) 2001-01-18

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