EP1413743B1 - Buse d'injection de carburant - Google Patents

Buse d'injection de carburant Download PDF

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Publication number
EP1413743B1
EP1413743B1 EP20020023553 EP02023553A EP1413743B1 EP 1413743 B1 EP1413743 B1 EP 1413743B1 EP 20020023553 EP20020023553 EP 20020023553 EP 02023553 A EP02023553 A EP 02023553A EP 1413743 B1 EP1413743 B1 EP 1413743B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
needle
face
ring plate
sleeve
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
EP20020023553
Other languages
German (de)
English (en)
Other versions
EP1413743A1 (fr
Inventor
Fabrizio Biagetti
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.)
Continental Automotive Italy SpA
Original Assignee
Siemens VDO Automotive SpA
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 Siemens VDO Automotive SpA filed Critical Siemens VDO Automotive SpA
Priority to DE2002622431 priority Critical patent/DE60222431T2/de
Priority to EP20020023553 priority patent/EP1413743B1/fr
Publication of EP1413743A1 publication Critical patent/EP1413743A1/fr
Application granted granted Critical
Publication of EP1413743B1 publication Critical patent/EP1413743B1/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
    • F02M51/0603—Injectors peculiar thereto with means directly operating the valve needle using piezoelectric or magnetostrictive 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/004—Joints; Sealings
    • 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
    • F02M61/08—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 the valves opening in direction of 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
    • F02M61/18—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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/16—Sealing of fuel injection apparatus 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
    • F02M2200/306—Fuel-injection apparatus having mechanical parts, the movement of which is damped using mechanical 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/31—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements
    • 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
    • F02M2200/31—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements
    • F02M2200/315—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements for damping fuel pressure fluctuations

Definitions

  • the ring plate is arranged on an upper end surface of the nozzle.
  • the upper end surface is directed towards the housing and the ring plate is pressed against the upper end surface by a holding element. This arrangement of the ring plate is advantageous for mounting the ring plate.
  • the sleeve comprises a first cylindrical part that surrounds the ring nut.
  • the first cylindrical part merges with a second cylindrical part by means of a step face.
  • the second cylindrical part has a smaller diameter than the first part.
  • the step face is adjacent to an upper plane of the ring plate and presses the ring plate with a lower face to the upper end surface of the nozzle.
  • Fig. 1 shows an outwardly opening nozzle 2.
  • the invention is not limited to an outwardly opening nozzle 2 and could also be implemented with an inwardly opening nozzle.
  • the needle 3 comprises in a middle part a guiding section 21 that is used to precisely guide the needle 3 in the nozzle 2. For a precise guiding, a small clearance is arranged between an outer face of the needle 3 and an inner face of the nozzle 2.
  • the needle 3 extends in a housing 22 of the fuel injector.
  • the second opening 8 is guided up to an end section at which the holding element 4 is tightly connected to a second ring 10.
  • the second ring 10 is tightly connected to a bellow 5 through which the needle 3 extends into an actor chamber of the housing 22.
  • a lower end of the bellow 5 is tightly connected over a first ring 9 with the needle 3.
  • the first ring 9 is arranged above the ring plate 1.
  • a first welding 14 is used for tightly connecting the first ring 9 with the needle 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (5)

  1. Buse (2) destinée à un injecteur (37) qui peut être fixée à un boîtier (22) de l'injecteur (37), comprenant une aiguille (3) qui est disposée de façon mobile à l'intérieur de la buse (2),
    grâce à quoi un soufflet (5) est prévu en tant qu'élément d'étanchéité de manière à séparer une région de carburant (16, 28) d'une chambre de fonctionnement (38),
    grâce à quoi une première bague d'extrémité du soufflet (5) est reliée hermétiquement à un élément de maintien (4) qui fait partie de la buse (2) ou est au moins relié hermétiquement à la buse (2),
    grâce à quoi un élément d'amortissement (1) est prévu,
    grâce à quoi l'aiguille (3) s'étend au travers de l'élément d'amortissement (1),
    grâce à quoi l'élément d'amortissement (1) divise la région de carburant en une chambre de carburant (16) et en une seconde chambre (28),
    grâce à quoi la seconde chambre (28) est limitée par le soufflet (5),
    grâce à quoi la chambre de carburant est limitée par la buse (2) et l'aiguille (3),
    grâce à quoi une plaque annulaire (1) est disposée en tant qu'élément d'amortissement,
    grâce à quoi la plaque annulaire (1) est maintenue par l'élément de maintien (4),
    caractérisée en ce que
    un écartement (19) entre l'aiguille (3) et la plaque annulaire (1) présente une valeur dans la plage de 10 à 120 µm.
  2. Buse selon la revendication 1, caractérisée en ce que l'élément de maintien (4) est un manchon,
    en ce qu'une partie inférieure du manchon (4) est reliée hermétiquement à une extrémité supérieure de la buse (2),
    en ce que l'aiguille (3) est disposée en partie à l'intérieur du manchon (4),
    en ce que la seconde extrémité du soufflet (5) est reliée hermétiquement à une extrémité supérieure du manchon (4).
  3. Buse selon l'une quelconque des revendications 1 ou 2, caractérisée en ce que la plaque annulaire (1) est disposée sur une face d'extrémité supérieure de la buse (2),
    en ce que la face d'extrémité supérieure (24) est orientée vers le boîtier (22),
    en ce que la plaque annulaire (1) est maintenue contre la face d'extrémité supérieure (24) par l'élément de maintien (4).
  4. Buse selon la revendication 2, caractérisée en ce que le manchon (4) comprend une face de maintien (31) sur l'extérieur qui est utilisée pour comprimer la buse (2) contre le boîtier d'injecteur (22) au moyen d'une face de maintien (32) d'un écrou (33).
  5. Buse selon l'une quelconque des revendications 2 à 4, caractérisée en ce que la buse (2) comprend un écrou à oeil (25) sur l'extérieur d'une extrémité supérieure,
    en ce que le manchon (4) entoure l'écrou à oeil (25) avec une première partie cylindrique,
    en ce que le manchon (4) est fixé à la buse (2),
    en ce que la première partie cylindrique s'intègre dans une seconde partie cylindrique grâce à une face étagée (7),
    en ce que la seconde partie présente un diamètre plus petit que celui de la première partie,
    en ce que la face étagée (7) est adjacente à la plaque annulaire (1) et maintient la plaque annulaire (1) au niveau de la face d'extrémité supérieure (24).
EP20020023553 2002-10-22 2002-10-22 Buse d'injection de carburant Expired - Lifetime EP1413743B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE2002622431 DE60222431T2 (de) 2002-10-22 2002-10-22 Brennstoffeinspritzdüse
EP20020023553 EP1413743B1 (fr) 2002-10-22 2002-10-22 Buse d'injection de carburant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20020023553 EP1413743B1 (fr) 2002-10-22 2002-10-22 Buse d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1413743A1 EP1413743A1 (fr) 2004-04-28
EP1413743B1 true EP1413743B1 (fr) 2007-09-12

Family

ID=32049997

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020023553 Expired - Lifetime EP1413743B1 (fr) 2002-10-22 2002-10-22 Buse d'injection de carburant

Country Status (2)

Country Link
EP (1) EP1413743B1 (fr)
DE (1) DE60222431T2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2739150C1 (ru) * 2020-03-07 2020-12-21 Максим Николаевич Карпов Ультразвуковой пьезоэлектрический преобразователь

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102536570A (zh) * 2012-01-10 2012-07-04 中国兵器工业集团第七0研究所 一种用于水平双对置柴油机共轨喷油器压紧装置
DE102018203145A1 (de) * 2018-03-02 2019-09-05 Robert Bosch Gmbh Düsenbaugruppe für ein Kraftstoffeinspritzventil zum Einspritzen eines gasförmigen und/oder flüssigen Kraftstoffs, Kraftstoffeinspritzventil

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2717550B1 (fr) * 1994-03-17 1996-06-07 Europ Propulsion Vanne cryogénique intégrale sous vide.
DE50010902D1 (de) * 1999-04-20 2005-09-15 Siemens Ag Fluiddosiervorrichtung
DE19947779A1 (de) * 1999-10-02 2001-04-12 Bosch Gmbh Robert Brennstoffeinspritzventil
DE19958704C2 (de) * 1999-12-06 2002-10-02 Siemens Ag Vorrichtung zum Übertragen einer Aktorbewegung und Fluiddosierer mit einer solchen Vorrichtung
US6334576B1 (en) * 2000-06-30 2002-01-01 Siemens Automotive Corporation Fuel injector having a ball seat with multiple tip geometry
EP1364114B1 (fr) * 2000-11-02 2005-09-21 Siemens Aktiengesellschaft Dispositif de dosage de liquide comprenant une zone d'etranglement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2739150C1 (ru) * 2020-03-07 2020-12-21 Максим Николаевич Карпов Ультразвуковой пьезоэлектрический преобразователь

Also Published As

Publication number Publication date
EP1413743A1 (fr) 2004-04-28
DE60222431D1 (de) 2007-10-25
DE60222431T2 (de) 2008-06-12

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