EP2218902B1 - Procédé pour la fabrication d'un élément d'ouverture/fermeture pour servovalves équilibrées d'un injecteur de carburant - Google Patents

Procédé pour la fabrication d'un élément d'ouverture/fermeture pour servovalves équilibrées d'un injecteur de carburant Download PDF

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Publication number
EP2218902B1
EP2218902B1 EP09425058A EP09425058A EP2218902B1 EP 2218902 B1 EP2218902 B1 EP 2218902B1 EP 09425058 A EP09425058 A EP 09425058A EP 09425058 A EP09425058 A EP 09425058A EP 2218902 B1 EP2218902 B1 EP 2218902B1
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European Patent Office
Prior art keywords
bushing
manufacturing
anchor
flange
open
Prior art date
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Application number
EP09425058A
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German (de)
English (en)
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EP2218902A1 (fr
Inventor
Mario Ricco
Sergio Stucchi
Raffaele Ricco
Onofrio De Michele
Chiara Altamura
Carlo Mazzarella
Antonio Gravina
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Centro Ricerche Fiat SCpA
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Centro Ricerche Fiat SCpA
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Priority to EP09425058A priority Critical patent/EP2218902B1/fr
Priority to DE602009001092T priority patent/DE602009001092D1/de
Priority to AT09425058T priority patent/ATE505642T1/de
Publication of EP2218902A1 publication Critical patent/EP2218902A1/fr
Application granted granted Critical
Publication of EP2218902B1 publication Critical patent/EP2218902B1/fr
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    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0017—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means
    • F02M63/0021—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means characterised by the arrangement of mobile armatures
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
    • F02M63/0071—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059 characterised by guiding or centering means in valves including the absence of any guiding means, e.g. "flying arrangements"
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
    • F02M63/0075—Stop members in valves, e.g. plates or disks limiting the movement of armature, valve or spring
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
    • F02M63/0078—Valve member details, e.g. special shape, hollow or fuel passages in the valve member
    • F02M63/008—Hollow valve members, e.g. members internally guided
    • 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
    • F02M2200/8084—Fuel injection apparatus manufacture, repair or assembly involving welding or soldering
    • 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
    • F02M2200/8092—Fuel injection apparatus manufacture, repair or assembly adjusting or calibration
    • 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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
    • 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
    • F02M51/0635—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding
    • F02M51/066—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature and the valve being allowed to move relatively to each other or not being attached to each other

Claims (13)

  1. Méthode de fabrication d'un élément d'ouverture/fermeture pour une servo-soupape équilibrée (5) d'un injecteur de carburant, dans laquelle l'élément d'ouverture/fermeture (47) est fixe par rapport à une douille (41) conçue pour se déplacer selon un certain déplacement axial le long d'une tige fixe (38) pour ouvrir/fermer ladite servo-soupape (5) ; une conduite d'évacuation (43, 44) de la servo-soupape (5) donnant sur une surface latérale (39) de ladite tige (38), un ressort (23) étant conçu pour maintenir ladite douille (41) dans la position de fermeture, où ladite douille (41) est soumise à une pression axiale sensiblement nulle ; ladite douille (41) étant mobile sous la commande d'une ancre (17) actionnée par un actionneur électrique (15) contre l'action dudit ressort (23) ; ladite ancre (17) étant pourvue d'un orifice central (59) et étant axialement mobile selon un déplacement supérieur audit certain déplacement ;
    ladite méthode comprenant les étapes suivantes :
    - un corps intermédiaire (12a) est fourni, comprenant une bride (24) pour supporter ledit ressort (23) et une tige de liaison (63) qui peut être insérée dans un siège (40a) agencé dans ladite douille (41) ;
    - ladite ancre (17) est installée sur une partie de guidage (61) de ladite douille (41) ;
    - ledit corps intermédiaire (12a) est installé sur ladite douille (41) afin de mettre ladite bride (24) en contact avec un bord (66) de ladite partie de guidage (61) ; et
    - ledit corps intermédiaire (12a) est soudé au moyen d'un dispositif de soudage (70, 77) sur ladite partie de guidage (61) le long d'une circonférence de contact continu (69, 76) pour que le soudage soit réalisé sans que le corps intermédiaire (12a) ne soit mis en phase avec le dispositif de soudage (70, 77).
  2. Méthode de fabrication selon la revendication 1, caractérisée en ce que ledit corps intermédiaire (12a) est en outre pourvu d'une tige de guidage (12) pour guider une extrémité dudit ressort (23), ladite tige de guidage (12) étant coaxiale par rapport à ladite tige de liaison (63) et opposée à cette dernière.
  3. Méthode de fabrication selon la revendication 1 ou la revendication 2, caractérisée en ce que ladite partie de guidage est formée par un collier (61) de ladite douille (41) placé entre un épaulement (62) de ladite douille et ledit bord (66).
  4. Méthode de fabrication selon la revendication 3, caractérisée en ce qu'un desdits éléments de butée (62, 75 ; 65) est formé par une surface (65) de ladite bride (24).
  5. Méthode de fabrication selon l'une des revendications précédentes, caractérisée en ce que ladite circonférence (69) de contact continu est mise, par un bord d'extrémité (71) de ladite tige de liaison (63), en contact avec ledit siège (40a).
  6. Méthode de fabrication selon les revendications 3 et 5, caractérisée en ce que l'autre desdits éléments de butée est constitué par ledit épaulement (62) de ladite douille (41).
  7. Méthode de fabrication selon l'une quelconque des revendications 1 à 4, caractérisée en ce que, une bague (73), d'une épaisseur choisie parmi des classes d'une épaisseur modulaire, est placée entre ledit épaulement (62) et ladite ancre (17).
  8. Méthode de fabrication selon les revendications 7 et 4, caractérisée en ce que ladite surface (65) de ladite bride (24) est conçue pour se placer en contact avec ledit bord d'extrémité (66), ladite circonférence de contact continu étant constituée par un arête vive (76) dudit bord d'extrémité (66) en contact avec ladite surface (65).
  9. Méthode de fabrication selon la revendication 7 ou la revendication 8, caractérisée en ce que ladite bague d'épaisseur est formée par une bague amovible (73), conçue pour bloquer ladite ancre (17) sur ladite douille (41), ladite bague amovible (73) étant installée sur ladite douille (41) après ledit soudage.
  10. Méthode de fabrication selon la revendication 9, caractérisée en ce que ladite bague amovible est une bague en forme de C (73) placée dans une rainure annulaire (74) de ladite douille (41) adjacente à ladite partie de guidage (61).
  11. Méthode de fabrication selon la revendication 10, caractérisée en ce que l'autre desdits éléments de butée (62, 75 ; 65) est formé par ladite bague en forme de C (73).
  12. Méthode de fabrication selon la revendication 9, caractérisée en ce que ladite bague d'épaisseur est une bague en forme de C (73) et est à son tour soudée dans une position correspondant à la surface (62) ou au collier (61), après son insertion.
  13. Élément d'ouverture/fermeture pour une servo-soupape équilibrée d'un injecteur de carburant, fabriqué en appliquant la méthode selon une des revendications précédentes.
EP09425058A 2009-02-16 2009-02-16 Procédé pour la fabrication d'un élément d'ouverture/fermeture pour servovalves équilibrées d'un injecteur de carburant Active EP2218902B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP09425058A EP2218902B1 (fr) 2009-02-16 2009-02-16 Procédé pour la fabrication d'un élément d'ouverture/fermeture pour servovalves équilibrées d'un injecteur de carburant
DE602009001092T DE602009001092D1 (de) 2009-02-16 2009-02-16 Verfahren zur Herstellung eines Öffnen/Schliessen-Elements für ausgeglichene Servoventile von Kraftstoffeinspritzdüsen
AT09425058T ATE505642T1 (de) 2009-02-16 2009-02-16 Verfahren zur herstellung eines öffnen/schliessen-elements für ausgeglichene servoventile von kraftstoffeinspritzdüsen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09425058A EP2218902B1 (fr) 2009-02-16 2009-02-16 Procédé pour la fabrication d'un élément d'ouverture/fermeture pour servovalves équilibrées d'un injecteur de carburant

Publications (2)

Publication Number Publication Date
EP2218902A1 EP2218902A1 (fr) 2010-08-18
EP2218902B1 true EP2218902B1 (fr) 2011-04-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP09425058A Active EP2218902B1 (fr) 2009-02-16 2009-02-16 Procédé pour la fabrication d'un élément d'ouverture/fermeture pour servovalves équilibrées d'un injecteur de carburant

Country Status (3)

Country Link
EP (1) EP2218902B1 (fr)
AT (1) ATE505642T1 (fr)
DE (1) DE602009001092D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011086951A1 (de) * 2011-11-23 2013-05-23 Robert Bosch Gmbh Ankerbaugruppe, Magnetventil sowie Kraftstoffeinspritzvorrichtung
FR3010148B1 (fr) * 2013-09-05 2015-09-25 Peugeot Citroen Automobiles Sa Valve de commande d'injecteur de carburant pour rampe d'injection commune et injecteur correspondant
DE102014207937A1 (de) * 2014-04-28 2015-10-29 Robert Bosch Gmbh Magnetventil für ein Kraftstoffeinspritzsystem

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5299776A (en) * 1993-03-26 1994-04-05 Siemens Automotive L.P. Impact dampened armature and needle valve assembly
DE10133450A1 (de) * 2001-07-10 2003-01-30 Bosch Gmbh Robert Magnetventil mit Steck-Drehverbindung
EP1707798B1 (fr) * 2005-03-14 2010-05-19 C.R.F. Società Consortile per Azioni Soupape de dosage asservie réglable pour un injecteur de carburant ainsi que sa méthode de réglage
DE102006021741A1 (de) * 2006-05-10 2007-11-15 Robert Bosch Gmbh Kraftstoffinjektor mit druckausgeglichenem Steuerventil
ATE445777T1 (de) * 2007-07-30 2009-10-15 Fiat Ricerche Einspritzdüse mit ausgeglichenem messservoventil für einen verbrennungsmotor

Also Published As

Publication number Publication date
ATE505642T1 (de) 2011-04-15
EP2218902A1 (fr) 2010-08-18
DE602009001092D1 (de) 2011-05-26

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