EP0497931B1 - Injecteur et procede pour la fabrication d'un injecteur - Google Patents

Injecteur et procede pour la fabrication d'un injecteur Download PDF

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Publication number
EP0497931B1
EP0497931B1 EP91912689A EP91912689A EP0497931B1 EP 0497931 B1 EP0497931 B1 EP 0497931B1 EP 91912689 A EP91912689 A EP 91912689A EP 91912689 A EP91912689 A EP 91912689A EP 0497931 B1 EP0497931 B1 EP 0497931B1
Authority
EP
European Patent Office
Prior art keywords
valve
seat
injection
welding seam
perforated
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
EP91912689A
Other languages
German (de)
English (en)
Other versions
EP0497931A1 (fr
Inventor
Dieter Vogt
Ferdinand Reiter
Martin Maier
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
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0497931A1 publication Critical patent/EP0497931A1/fr
Application granted granted Critical
Publication of EP0497931B1 publication Critical patent/EP0497931B1/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
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • 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
    • F02M61/161—Means for adjusting injection-valve lift
    • 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
    • F02M61/168—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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49405—Valve or choke making
    • Y10T29/49412—Valve or choke making with assembly, disassembly or composite article making
    • Y10T29/49416—Valve or choke making with assembly, disassembly or composite article making with material shaping or cutting
    • Y10T29/49421—Valve or choke making with assembly, disassembly or composite article making with material shaping or cutting including metallurgical bonding
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49405—Valve or choke making
    • Y10T29/49412—Valve or choke making with assembly, disassembly or composite article making
    • Y10T29/49425—Valve or choke making with assembly, disassembly or composite article making including metallurgical bonding
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49764—Method of mechanical manufacture with testing or indicating
    • Y10T29/49771—Quantitative measuring or gauging

Definitions

  • the invention is based on an injection valve and a method for producing an injection valve according to the preamble of claims 1 and 7, respectively.
  • an injection valve is already known which has a cup-shaped perforated body downstream of its valve seat surface. The perforated body is firmly clamped between the nozzle body and a processing sleeve.
  • the end face of the nozzle body, against which the stop plate determining the residual air gap of the armature with respect to the core lies is ground.
  • this valve and the manufacturing process used have the disadvantage that the end face of the nozzle body can only be ground with a partially dismantled valve, so that the exact setting of the valve needle stroke is very complex.
  • DE 38 41 142 A1 shows an injection valve with a cup-shaped perforated body which extends with its holding edge facing away from the valve seat surface in the axial direction and is connected with the end of the holding edge to the wall of the receiving bore of the valve seat body.
  • the valve seat body is in the longitudinal opening of the seat carrier inserted and firmly connected to it, the insertion depth of the valve seat body in the longitudinal opening of the seat carrier determines the valve needle stroke. With this valve, too, the valve needle stroke can no longer be adjusted in the fully assembled state without at least partially dismantling the valve again.
  • valve seat body that has at least one spray opening is described in DE 38 31 196 A1.
  • the valve seat body is pressed into the longitudinal opening of the seat carrier, the press-in depth determining the valve needle stroke.
  • the setting of the valve needle stroke can be carried out on the fully assembled injection valve, but when the valve seat body is pressed into the seat carrier there is a risk of chip formation on the valve seat body and / or the seat carrier.
  • the injection valve according to the invention with the characterizing features of claim 1 and the method for producing an injection valve with the characterizing features of claim 7 have the advantage of a particularly by the deformation of the valve seat part consisting of valve seat body and perforated body in the axial direction in the area between the fastening points of the perforated body simple and inexpensive, fully automatable and exact setting of the valve needle stroke and thus the static flow quantity of a medium given off during the stationary opening state of the injection valve.
  • there is a simple construction of the injection valve with a simple and inexpensive manufacture of the valve seat body and the perforated body It is ensured that the axial extension of the perforated body in the area of the holes does not change due to the assembly of the injection valve and the desired, predetermined spray characteristic is achieved.
  • a holding edge of the pot-shaped perforated body extends away from the valve seat body in the axial direction and the holding edge is firmly connected at its free end to the wall of the longitudinal opening of the seat carrier.
  • the holding edge of the perforated body is bent outwards towards its free end, as a result of which it has a larger diameter at its end than the diameter of the longitudinal opening of the seat support, so that the holding edge when the valve part is inserted into the longitudinal opening of the seat support has a radial spring action and lies with a slight pressure on the wall of the longitudinal opening without the risk of chip formation on the perforated body and / or the longitudinal opening of the seat support.
  • the circumference of the valve seat body has a smaller diameter than the diameter of the longitudinal opening of the seat carrier. This prevents chips from being formed on the valve seat body and / or the longitudinal opening of the seat carrier when the valve seat part consisting of valve seat body and perforated body is inserted into the seat carrier. In addition, it is not necessary to maintain a narrow dimensional tolerance on the circumference of the valve seat body during manufacture, so that the manufacturing costs of the valve seat body are substantially reduced.
  • the perforated body is tightly connected on its end face to the end face of the valve seat body by means of a first circumferential weld seam and on its circumference to the wall of the longitudinal opening of the seat carrier by means of a second circumferential weld seam.
  • first weld seam and the second weld seam are designed to be particularly safe and reliable and in a simple manner by means of laser welding.
  • the parts to be welded are only slightly heated.
  • FIG. 1 An embodiment of the invention is shown in simplified form in the drawing and explained in more detail in the following description.
  • the figure shows a partially illustrated injection valve according to the embodiment.
  • a fuel injector for fuel injection systems of mixture-compressing spark-ignition internal combustion engines is partially shown.
  • the fuel injector has a tubular seat support 1, in which a longitudinal opening 3 is formed concentrically with a valve longitudinal axis 2.
  • a longitudinal opening 3 is formed concentrically with a valve longitudinal axis 2.
  • tubular valve needle 5 which is connected at its downstream end 6 to a spherical valve closing body 7.
  • the fuel injector is actuated in a known manner, for example electromagnetically.
  • An indicated electromagnetic circuit with a magnet coil 10, an armature 11 and a core 12 is used for the axial movement of the valve needle 5 and thus for opening or closing the fuel injection valve.
  • the armature 11 is connected to the end of the valve needle 5 facing away from the valve closing body 7 and on the core 12 aligned.
  • a guide opening 16 of a valve seat body 18 serves to guide the valve closing body 7 during the axial movement.
  • the circumference of the valve seat body 18 has a smaller diameter than the diameter of the longitudinal opening 3 of the seat carrier 1.
  • the valve seat body 18 On its one end face 19 facing away from the valve closing body 7, the valve seat body 18 is concentrically and firmly connected to a bottom part 21 of a perforated body 22, so that the end part 20 of the bottom part 21 bears against the end face 19 of the valve seat body 18.
  • the valve seat body 18 and the perforated body 22 are connected, for example, by a circumferential and tight, e.g. first weld seam 24 formed by a laser. For this reason, good weldability must also be ensured when selecting the material for the perforated body 22. This type of installation avoids the risk of deformation of the base part 21 in the region of its at least one, for example two, spray openings 27 formed by eroding.
  • the perforated body 22 has a cup-shaped cross-sectional shape.
  • the base part 21 of the perforated body 22 is adjoined by a circumferential holding edge 23 which extends in the axial direction away from the valve seat body 18 and is conically bent outwards up to one end 26.
  • the holding edge 23 has a larger diameter at its end 26 than the diameter of the longitudinal opening 3 of the seat support 1.
  • valve seat part consisting of the valve seat body 18 and the perforated body 22 is inserted into the longitudinal opening 3. Due to the smaller diameter of the circumference of the valve seat body 18 compared to the longitudinal opening 3 of the seat support 1, there is only radial pressure between the longitudinal opening 3 and the slightly conical outwardly bent retaining edge 23 of the perforated body 22, the retaining edge 23 having a radial spring action the wall of the longitudinal opening 3 exerts. As a result, chip insertion both at the valve seat part and at the longitudinal opening 3 is avoided when the valve seat part consisting of valve seat body 18 and perforated body 22 is inserted into the longitudinal opening 3 of the seat carrier 1.
  • valve seat body 18 In addition, in the manufacture of the valve seat body 18 it is not necessary to maintain a narrow dimensional tolerance on its circumference, since the valve seat body 18 has a slight play in the radial opening in the longitudinal opening 3 of the seat carrier 1, so that the manufacturing costs compared to a valve seat body pressed into the longitudinal opening 3 be significantly reduced.
  • the insertion depth of the valve seat part into the longitudinal opening 3 of the seat support 1 determines the presetting of the stroke of the valve needle 5, since the one end position of the valve needle 5 is fixed when the solenoid coil 10 is not energized by the valve closing body 7 resting on a valve seat surface 32 of the valve seat body 18.
  • the other end position of the valve needle 5 is determined when the solenoid 10 is excited, for example by the armature 11 resting on the core 12. The path between these two end positions of the valve needle 5 represents the stroke.
  • the holding edge 23 of the perforated body 22 is connected to the wall of the longitudinal opening 3, for example by a circumferential and tight second weld seam 30.
  • the second weld 30 is exactly like the first weld 24 z. B. formed by means of a laser, so that there is a safe and reliable weld which can be produced in a simple manner and in which the heating of the parts to be welded to one another is low.
  • valve seat body 18 and perforated body 22 and of perforated body 22 and seat support 1 is required so that the medium used, for example a fuel, does not pass between the longitudinal opening 3 of the seat support 1 and the circumference of the valve seat body 18 to the spray openings 27 or between the Longitudinal opening 3 of the seat support 1 and the holding edge 23 of the perforated body 22 can flow directly into an intake line of the internal combustion engine.
  • medium used for example a fuel
  • fastening points on the perforated body 22 there are two fastening points on the perforated body 22, one fastening point being the first weld 24 with the valve seat body 18 and the second fastening point the second weld 30 with the seat support 1.
  • the spherical valve closing body 7 interacts with the valve seat surface 32 of the valve seat body 18, which tapers conically in the flow direction and is formed in the axial direction between the guide opening 16 and the end face 19 of the valve seat body 18.
  • the guide opening 16 as shown on the left of the longitudinal valve axis 2 in the figure, has at least one flow passage 33 which prevents a flow of the medium from the valve interior 35 delimited in the radial direction by the longitudinal opening 3 of the seat support 1 to a flow direction between the guide opening 16 and the valve seat surface 32 of the valve seat body 18 formed annular groove 36 which is in the open state of the valve with the spray openings 27 of the perforated plate 22 in connection.
  • the diameter of the guide opening is 16 designed so that the spherical valve closing body 7 projects through the guide opening 16 with a small radial distance.
  • the perforated body 22 is used for the exact adjustment of the stroke of the valve needle 5 in the axial direction in the area between the second weld seam 30 and of the first weld seam 24 is stretched in this way by means of a tool 38 and, if necessary, is plastically deformed until the measured actual medium quantity corresponds to the predetermined medium target quantity.
  • the injection valve according to the invention and the method according to the invention for producing an injection valve allow in a simple manner the exact setting of the static flow quantity of a medium which is emitted during the stationary opening state of the injection valve at the fully assembled injection valve.
  • a protective cap 45 is arranged on the periphery of the seat carrier 1 at its downstream end facing away from the magnet coil 10 and is connected to the periphery of the seat carrier 1 by means of a latching connection 46.
  • the protective cap 45 rests with a first radial section 47 on an end face 48 of the seat support 1.
  • the first radial section 47 of the protective cap 45 is initially followed by an axially extending parallel section 49 and then by a radially outwardly pointing section second radial section 50.
  • a sealing ring 51 is arranged in an annular groove 53, the side surfaces of which are formed by an end face 54 of the second radial section 50 of the protective cap 45 facing the magnetic coil 10 and by a radially outwardly facing contact surface 55 of the seat support 1 and the groove base 57 thereof by the circumference of the seat support 1 become.
  • the sealing ring 51 serves to seal between the circumference of the fuel injection valve and a valve receptacle, not shown, for example the intake line of the internal combustion engine.

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  • 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)

Abstract

Dans des injecteurs connus, la course de l'aiguille d'injection est réglée par exemple par la rectification du côté frontal de la buse ou bien par la variation de la profondeur d'introduction d'un corps de siège d'injecteur glissé dans une ouverture longitudinale du support de siège et ensuite solidarisé à ce dernier, ce réglage n'étant pas possible dans le cas d'un injecteur une fois monté. Si le corps de siège d'injecteur est emmanché dans l'ouverture longitudinale, il y a risque d'une formation de copeaux. Dans le nouvel injecteur, une partie d'injecteur constituée d'un corps de siège d'injecteur (18) et d'un corps perforé (22) relié à ce dernier est introduite dans l'ouverture longitudinale (3) du support de siège (1) et solidarisée au support de siège (1), la profondeur d'introduction déterminant le préréglage de la course de l'aiguille d'injection. Le réglage exact de la course de l'aiguille d'injection se fait sur l'injecteur une fois monté, en déformant la partie d'injecteur entre les points de fixation (24, 30) du corps perforé (22). L'injecteur et le procédé pour la fabrication d'un injecteur conviennent en particulier à des systèmes d'injection de carburant de moteurs à combustion interne à allumage extérieur par étincelle des mélanges.

Claims (9)

  1. Injecteur notamment injecteur de carburant pour des installations d'injection de carburant de moteurs à combustion interne ayant une aiguille d'injecteur (5), mobile, un corps de siège d'injecteur (18) logé dans une ouverture longitudinale concentrique à l'axe longitudinal (2) de l'injecteur et appartenant à un support de siège (1), tubulaire et ayant une surface de siège de soupape (32) coopérant avec l'aiguille d'injecteur (1), et en aval du corps de siège de soupape (18), un organe perforé (22) ayant au moins un orifice d'éjection (18), caractérisé en ce que l'organe perforé (22) est relié par sa face frontale (20) tournée vers le corps de siège de soupape (18), avec la face frontale (19) du corps de siège de soupape (18) et à sa périphérie cet organe est relié solidement à la paroi de l'ouverture longitudinale (3) du support de siège (1).
  2. Injecteur selon la revendication 1 ayant un organe perforé en forme de pot muni d'un bord de maintien périphérique, caractérisé en ce que le bord de maintien (23) de l'organe perforé (22) s'écarte du corps de siège de soupape (18) dans la direction axiale et le bord de maintien (23) est relié solidairement à la paroi d'ouverture longitudinale (3) du support de siège (1) par son extrémité libre (26).
  3. Injecteur selon la revendication 2, caractérisé en ce que le bord de maintien (23) de l'organe perforé (22) est recourbé vers l'extérieur au niveau d'une extrémité (26) alors que son autre extrémité (26) présente un plus grand diamètre que le diamètre de l'ouverture longitudinale (3) du support de siège (1).
  4. Injecteur selon l'une des revendications précédentes, caractérisé en ce que la périphérie du corps de siège de soupape (18) à un diamètre plus petit que le diamètre de l'ouverture longitudinale (3) du support de siège (1).
  5. Injecteur selon l'une des revendications précédentes, caractérisé en ce que l'organe perforé (22) est relié de manière étanche au niveau de sa face frontale (20) à la face frontale (19) de l'organe formant siège de soupape (18) à l'aide d'un premier cordon de soudure (24) périphérique et à la périphérie, la liaison avec la paroi de l'ouverture longitudinale (3) du support de siège (1) est assurée par un second cordon de soudure périphérique (30) assurant une liaison étanche.
  6. Injecteur selon la revendication 5, caractérisé en ce que le premier cordon de soudure (24) et/ou le second cordon de soudure (30) sont constitués par des soudures au laser.
  7. Procédé de fabrication d'un injecteur notamment d'un injecteur de carburant destiné à des installations d'injection de carburant de moteurs à combustion interne ayant un support de siège (1), tubulaire qui comporte une ouverture longitudinale concentrique à l'axe longitudinal (2) de l'injecteur, ouverture recevant une aiguille d'injecteur (5), mobile à l'aide de laquelle l'organe de siège de soupape (18) qui possède une surface de siège de soupape (32) coopérant avec l'aiguille de l'injecteur et un organe perforé (22) en forme de pot, qui comporte au moins une ouverture d'éjection (27), comporte un fond (21) appliqué contre le corps de siège de soupape ainsi qu'un bord de maintien (23), périphérique, caractérisé en ce que dans une première étape de procédé, on relie le corps de siège de soupape (18) dont la périphérie a un diamètre plus petit que l'ouverture longitudinale (3) du support de siège (1), avec la partie de fond (21) de l'organe perforé (22) par une liaison constituée par un premier cordon de soudure (24), le bord de maintien (23) de l'organe perforé (22) recourbé vers l'extérieur dans la direction opposée à celle du corps de siège de soupape (18) présente à son extrémité libre (26) un plus grand diamètre que celui de l'ouverture longitudinale (3) du support de siège 1, dans une seconde étape de procédé, la pièce de siège de soupape formée du corps de siège de soupape (18) et de l'organe perforé (22), est glissée dans l'ouverture longitudinale (3) du support de siège (1) pour prérégler la course de l'aiguille d'injecteur (5) et dans une troisième étape de procédé, l'organe perforé (22) est fixé à l'extrémité (26) de son bord de retenue (23) à la paroi de l'ouverture longitudinale (3) du support de siège (1) à l'aide d'un second cordon de soudure (30) assurant une liaison solidaire, et dans une quatrième étape de procédé, on mesure la quantité réelle de fluide fournie de manière statique, pendant l'état d'ouverture stationnaire de l'injecteur et on compare la valeur obtenue à une quantité de consigne prédéterminée de fluide, et dans une cinquième étape du procédé, on déforme l'organe perforé (22) pour le réglage précis de la course de l'aiguille d'injecteur, dans la direction axiale au niveau de la zone comprise entre le premier cordon de soudure (24) et le second cordon de soudure (30) jusqu'à ce que la quantité réelle du fluide, mesurée correspond à une valeur de consigne de fluide, prédéterminée.
  8. Procédé selon la revendication 7, caractérisé en ce que le premier cordon de soudure (24) et le second cordon de soudure (30) sont réalisés de manière périphérique et étanche.
  9. Procédé selon l'une des revendications 7 ou 8, caractérisé en ce que le premier cordon de soudure 24 et/ou le second cordon de soudure (30) sont obtenus par soudage au laser.
EP91912689A 1990-08-24 1991-07-17 Injecteur et procede pour la fabrication d'un injecteur Expired - Lifetime EP0497931B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4026721A DE4026721A1 (de) 1990-08-24 1990-08-24 Einspritzventil und verfahren zur herstellung eines einspritzventils
DE4026721 1990-08-24
PCT/DE1991/000589 WO1992003653A1 (fr) 1990-08-24 1991-07-17 Injecteur et procede pour la fabrication d'un injecteur

Publications (2)

Publication Number Publication Date
EP0497931A1 EP0497931A1 (fr) 1992-08-12
EP0497931B1 true EP0497931B1 (fr) 1995-04-05

Family

ID=6412788

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91912689A Expired - Lifetime EP0497931B1 (fr) 1990-08-24 1991-07-17 Injecteur et procede pour la fabrication d'un injecteur

Country Status (8)

Country Link
US (2) US5263648A (fr)
EP (1) EP0497931B1 (fr)
JP (1) JP3048634B2 (fr)
KR (1) KR100190480B1 (fr)
DE (2) DE4026721A1 (fr)
ES (1) ES2072002T3 (fr)
RU (1) RU2062347C1 (fr)
WO (1) WO1992003653A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998014701A1 (fr) 1996-10-02 1998-04-09 Robert Bosch Gmbh Soupape et procede de production d'une soupape

Families Citing this family (68)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4205887A1 (de) * 1992-02-26 1993-09-02 Bosch Gmbh Robert Vorrichtung zur einspritzung eines brennstoff-gas-gemisches
DE4304804A1 (de) * 1993-02-17 1994-08-18 Bosch Gmbh Robert Vorrichtung zur Einspritzung eines Brennstoff-Gas-Gemisches
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US5390411A (en) 1995-02-21
US5263648A (en) 1993-11-23
WO1992003653A1 (fr) 1992-03-05
JPH05501748A (ja) 1993-04-02
RU2062347C1 (ru) 1996-06-20
ES2072002T3 (es) 1995-07-01
DE4026721A1 (de) 1992-02-27
KR920702466A (ko) 1992-09-04
DE59105118D1 (de) 1995-05-11
KR100190480B1 (ko) 1999-06-01
JP3048634B2 (ja) 2000-06-05
EP0497931A1 (fr) 1992-08-12

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