EP1055065A1 - Soupape d'injection de carburant - Google Patents

Soupape d'injection de carburant

Info

Publication number
EP1055065A1
EP1055065A1 EP99955711A EP99955711A EP1055065A1 EP 1055065 A1 EP1055065 A1 EP 1055065A1 EP 99955711 A EP99955711 A EP 99955711A EP 99955711 A EP99955711 A EP 99955711A EP 1055065 A1 EP1055065 A1 EP 1055065A1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
injection valve
valve
valve according
perforated 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.)
Granted
Application number
EP99955711A
Other languages
German (de)
English (en)
Other versions
EP1055065B1 (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 EP1055065A1 publication Critical patent/EP1055065A1/fr
Application granted granted Critical
Publication of EP1055065B1 publication Critical patent/EP1055065B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F02M61/04—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
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1853—Orifice plates

Definitions

  • the invention relates to a fuel injector according to the preamble of the main claim.
  • an injection valve which has a thin cup-shaped perforated disc at its downstream end.
  • This perforated disc has a flat bottom part with several spray openings and a protruding holding edge, which creates a pot or bowl shape.
  • the perforated disc is fastened in the area of its base part to a valve seat body by means of a circumferential weld seam, while the holding edge is firmly connected to a valve seat support by welding.
  • the perforated disk In order to prevent the perforated disk from lifting due to the prevailing fuel pressure, the perforated disk must be made sufficiently thick.
  • the thickness of the perforated disk that is predetermined in this way has the disadvantage that the fuel emerging from the spray openings is not optimally torn into the finest fuel droplets, and therefore no ideal fuel preparation is achieved. Therefore, it was already proposed in DE 41 23 692 C2 to provide a support disk in addition to the perforated disk.
  • the support disc now has a cup-shaped shape, which clamps a flat perforated disc which is domed in the form of a dome in its central region and is clamped between its base part and the valve seat body. In this way, the perforated disc is easy to manufacture and can be made relatively thin.
  • the fuel injector according to the invention with the characterizing features of the main claim has the advantage over the prior art that it has a perforated disk which is formed in a particularly simple manner without any additional material or component expenditure and which has increased stability and rigidity compared to known perforated disks of the same thickness. In addition, an improved dynamic durability is achieved.
  • By means of the measures according to the invention for increasing the rigidity of the perforated disk it is possible to make the perforated disk thinner than before and thus a specific ratio of required under certain installation conditions
  • the formations are made in the form of beads, which can be produced by means of embossing on the perforated disk which represents a sheet metal part. It is advantageous if at least three formations are provided distributed over the circumference.
  • FIG. 1 shows a partially illustrated fuel injector
  • FIG. 2 shows a perforated disk according to the invention
  • FIG. 3 shows a sectional view through the perforated disk according to FIG. 2 along the line III-III in FIG. 2.
  • FIG. 1 shows a valve in the form of an injection valve for fuel injection systems of mixed-compression spark-ignition internal combustion engines, which has a perforated disk according to the invention.
  • the injection valve has a tubular valve 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 is arranged as an axially movable valve member, which at its downstream end 6 with a z.
  • the injection valve is actuated in a known manner, for example electromagnetically here. However, e.g. piezoelectric actuation is also conceivable.
  • a schematically indicated electromagnetic circuit with a solenoid 10, an armature 11 and a core 12 is used 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.
  • the armature 11 is connected to the valve closing body 7 opposite end of the valve needle 5 by z.
  • valve seat body 16 is concentrically and firmly connected to a cup-shaped or cup-shaped perforated disk 21, the perforated disk 21 with a bottom part 22 directly abutting a lower end face 23 of the valve seat body 16.
  • a circumferential retaining edge 26 which extends in the axial direction away from the valve seat body 16 and is slightly conically bent outwards up to one end 27.
  • the holding edge 26 has at its end 27 a slightly larger diameter than the diameter of the longitudinal opening 3 of the valve seat carrier 1.
  • the valve seat body 16 and the perforated disk 21 are connected, for example, by a circumferential and tight means a first weld seam 25 formed by a laser.
  • the perforated disk 21 is further connected at the end 27 of the holding edge 26 to the wall of the longitudinal opening 3 in the valve seat support 1, for example by a circumferential and tight second weld seam 30.
  • the spherical valve closing body 7 interacts with a valve seat surface 29 of the valve seat body 16 which is formed downstream of the guide opening 15 and tapers conically in the flow direction, for example.
  • An end position of the valve needle 5 is determined when the solenoid 10 is not energized by the valve closing body 7 resting on the valve seat surface 29.
  • the other end position of the valve needle 5 is e.g. defined by the installation of the anchor 11 on the core 12. The path between the two end positions represents the needle stroke.
  • the fuel flowing past the valve seat surface 29 when the valve is open reaches an outlet opening 31 in the valve seat body 16 which follows it and is, for example, cylindrical.
  • the fuel then passes through one or more, for example four, spray openings 33 produced by punching, eroding or laser drilling, which are introduced in a central region 34 of the base part 22 of the perforated disk 21. From these spray openings 33, fuel is sprayed, for example, into the intake manifold of an internal combustion engine near an intake valve.
  • Perforated disks attached to injection valves with their spray openings take over the representation of the flow rate, the jet formation and the jet preparation of the fuel.
  • Perforated disks 21 can advantageously be drawn as deep-drawn sheet metal cups produce, which, as already described, have a bottom part 22 and a holding edge 26 projecting therefrom. In this way, perforated disks 21 of this type perform further functions, such as indirectly fastening the valve seat body 16, adjusting the stroke of the
  • the ratio of sheet thickness to hole diameter means that relatively small sheet thicknesses are necessary for the perforated disks 21. Such particularly thin sheet metal perforated disks 21 are, however, exposed to a correspondingly higher mechanical load. According to the invention
  • the stability and rigidity of the perforated disk 21 can be increased without additional support elements being provided, as is known from the document DE 41 23 692 C2.
  • a perforated disk 21 according to the invention is shown in a plan view in FIG. 2, while FIG. 3 is a sectional illustration through the perforated disk 21 along the line III-III in FIG.
  • the beads 36 are ideally shaped by means of embossing, at least three, for example, as shown in FIGS. 2 and 3, eight beads 36 being formed over the circumference. As can be seen in FIG. 2, the, for example, eight beads 36 can be spaced from 45 ° to each other.
  • a perforated disk 21 stiffened in this simple manner also has the advantage of improved dynamic durability.
  • the beads 36 are e.g. introduced in such a way that bead recesses are present on the upper side 37 of the perforated disk 21 facing the valve seat body 16 compared to the material surrounding the beads 36.
  • the beads 36 form bead elevations on the underside 38 of the perforated disk 21 opposite the top 37 opposite the material surrounding the beads 36.
  • the beads 36 have, for example, a circular shape, an oval shape or a similar shape.
  • the perforated disc 21 can e.g. can also be installed in the injection valve with a retaining edge 26 standing axially upstream.

Abstract

L'invention concerne une soupape d'injection de carburant comportant un dispositif d'actionnement excitable (10, 11, 12) et une aiguille de soupape (5) mobile axialement à travers le dispositif d'actionnement (10, 11, 12) et reliée à un élément de fermeture de soupape (7). L'élément de fermeture de soupape (7) concourt avec une surface de siège de soupape (29) pour l'ouverture et la fermeture de la soupape. En aval de la surface de siège de soupape (29) se trouve un disque ajouré (21) en forme de cuvette ou de creuset avec une base (22) et un bord de maintien (26) en saillie. Le mince disque ajouré (21) en tôle présente, dans la zone de transition de la base (22) au bord de maintien (26), des renflements (36) augmentant sa rigidité. La soupape d'injection de carburant selon l'invention convient particulièrement aux dispositifs d'injection de carburant de moteurs à combustion interne à allumage extérieur et à compression de mélange.
EP99955711A 1998-12-10 1999-09-15 Soupape d'injection de carburant Expired - Lifetime EP1055065B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19856920 1998-12-10
DE19856920A DE19856920A1 (de) 1998-12-10 1998-12-10 Brennstoffeinspritzventil
PCT/DE1999/002931 WO2000034648A1 (fr) 1998-12-10 1999-09-15 Soupape d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1055065A1 true EP1055065A1 (fr) 2000-11-29
EP1055065B1 EP1055065B1 (fr) 2004-02-25

Family

ID=7890578

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99955711A Expired - Lifetime EP1055065B1 (fr) 1998-12-10 1999-09-15 Soupape d'injection de carburant

Country Status (10)

Country Link
US (1) US6371391B1 (fr)
EP (1) EP1055065B1 (fr)
JP (1) JP2002531770A (fr)
KR (1) KR20010040792A (fr)
CN (1) CN1116516C (fr)
AU (1) AU748415B2 (fr)
BR (1) BR9907833A (fr)
DE (2) DE19856920A1 (fr)
RU (1) RU2230216C2 (fr)
WO (1) WO2000034648A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10059420A1 (de) * 2000-11-30 2002-06-06 Bosch Gmbh Robert Brennstoffeinspritzventil
DE10314670A1 (de) * 2003-04-01 2004-10-14 Robert Bosch Gmbh Verfahren zur Herstellung und Befestigung einer Lochscheibe
US7334746B2 (en) * 2004-03-08 2008-02-26 Continental Automotive Systems Us, Inc. Seat-lower guide combination
JP6059915B2 (ja) * 2012-08-27 2017-01-11 日立オートモティブシステムズ株式会社 燃料噴射弁

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3978705A (en) * 1975-03-14 1976-09-07 Cotton Incorporated Method and apparatus for the manufacture of a thin sheet orifice plate
US4774976A (en) * 1987-09-23 1988-10-04 Applied Power Inc. Modulating hydraulic pressure control valve and assembly method therefor
DE3841142C2 (de) 1988-12-07 1994-09-29 Bosch Gmbh Robert Einspritzventil
DE4026721A1 (de) * 1990-08-24 1992-02-27 Bosch Gmbh Robert Einspritzventil und verfahren zur herstellung eines einspritzventils
DE4123692C2 (de) 1991-07-17 1995-01-26 Bosch Gmbh Robert Brennstoffeinspritzventil
DE4408875A1 (de) * 1994-03-16 1995-09-21 Bosch Gmbh Robert Brennstoffeinspritzventil
DE19527049A1 (de) * 1995-07-25 1997-01-30 Bosch Gmbh Robert Brennstoffeinspritzventil
DE19537382A1 (de) * 1995-10-07 1997-04-10 Bosch Gmbh Robert Elektromagnetisch betätigbares Ventil, insbesondere Brennstoffeinspritzventil
DE19724075A1 (de) * 1997-06-07 1998-12-10 Bosch Gmbh Robert Verfahren zur Herstellung einer Lochscheibe für ein Einspritzventil und Lochscheibe für ein Einspritzventil und Einspritzventil

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0034648A1 *

Also Published As

Publication number Publication date
AU1260000A (en) 2000-06-26
DE59908651D1 (de) 2004-04-01
EP1055065B1 (fr) 2004-02-25
KR20010040792A (ko) 2001-05-15
US6371391B1 (en) 2002-04-16
CN1116516C (zh) 2003-07-30
RU2230216C2 (ru) 2004-06-10
AU748415B2 (en) 2002-06-06
BR9907833A (pt) 2000-10-24
WO2000034648A1 (fr) 2000-06-15
DE19856920A1 (de) 2000-06-15
JP2002531770A (ja) 2002-09-24
CN1292848A (zh) 2001-04-25

Similar Documents

Publication Publication Date Title
EP0774069B1 (fr) Soupape d'injection de carburant pour moteurs a combustion interne
DE4446241A1 (de) Brennstoffeinspritzventil
EP0853724A1 (fr) Soupape d'injection de carburant
EP1114249B1 (fr) Soupape d'injection de carburant
WO1994000686A1 (fr) Disque perfore d'injection pour soupape et son procede de fabrication
WO2002084113A1 (fr) Soupape d'injection de carburant
EP1399669B1 (fr) Soupape d'injection de carburant
EP0675283A1 (fr) Soupape d'injection
DE19835693A1 (de) Brennstoffeinspritzventil
EP1055065B1 (fr) Soupape d'injection de carburant
EP1409867B1 (fr) Soupape d'injection de carburant
EP1322858A1 (fr) Soupape d'injection de carburant
DE10063260A1 (de) Brennstoffeinspritzventil
EP1009931B1 (fr) Soupape d'injection de carburant
EP1377749B1 (fr) Soupape a commande electromagnetique
EP0853725B1 (fr) Soupape d'injection de carburant
EP1105641B1 (fr) Soupape d'admission de carburant
WO1997008453A1 (fr) Soupape d'injection de carburant
WO2005064150A1 (fr) Soupape d'injection de carburant
EP0917622A1 (fr) Soupape
DE102019217970A1 (de) Ventil zum Zumessen eines Fluids
DE102019219681A1 (de) Ventil zum Zumessen eines Fluids
WO2004101986A9 (fr) Soupape d'injection de carburant
DE10304866A1 (de) Brennstoffeinspritzventil

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

17P Request for examination filed

Effective date: 20001215

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

REF Corresponds to:

Ref document number: 59908651

Country of ref document: DE

Date of ref document: 20040401

Kind code of ref document: P

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20040602

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20040902

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20040917

Year of fee payment: 6

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20041126

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050915

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050915

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20050915

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060531

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20060531

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20081124

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100401