EP1135604B1 - Procede pour ajuster le debit au niveau d'une soupape d'injection de carburant - Google Patents

Procede pour ajuster le debit au niveau d'une soupape d'injection de carburant Download PDF

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Publication number
EP1135604B1
EP1135604B1 EP00972606A EP00972606A EP1135604B1 EP 1135604 B1 EP1135604 B1 EP 1135604B1 EP 00972606 A EP00972606 A EP 00972606A EP 00972606 A EP00972606 A EP 00972606A EP 1135604 B1 EP1135604 B1 EP 1135604B1
Authority
EP
European Patent Office
Prior art keywords
perforated disc
swirl
deformation
valve
layer
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
EP00972606A
Other languages
German (de)
English (en)
Other versions
EP1135604A1 (fr
Inventor
Dieter Holz
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 EP1135604A1 publication Critical patent/EP1135604A1/fr
Application granted granted Critical
Publication of EP1135604B1 publication Critical patent/EP1135604B1/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
    • F02M61/1853—Orifice plates
    • 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
    • F02M61/162—Means to impart a whirling motion to fuel upstream or near discharging orifices
    • 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 method for adjusting the flow rate to a fuel injector after the genus of the main claim, as from the patent DE 40 25 945 A known.
  • a fuel injection valve at least one swirl duct to deform.
  • the provided on a valve seat body Swirl channel is in its passage cross section through Deformation steadily decreases until the flow rate in the Spin channel has reached a predetermined setpoint.
  • the Deformation takes place by means of a press ram, which in downstream direction introduced into the nozzle body becomes. By turning the ram becomes the cross section of the swirl duct on the valve seat is reduced.
  • the inventive method for adjusting the Flow rate at a fuel injection valve with the Characteristic features of the main claim has the Advantage that with him on a ready assembled Fuel injection valve in a simple way a multi-layered or Moscheibige perforated disc in their Opening cross sections can be changed, causing the To be dispensed flow rates very easy on Fuel injection valves with such perforated discs are adjustable.
  • the perforated disc as Swirl disk, in particular as a so-called sheet-metal laminate swirl disk, perform at least one mean Position of the perforated disc an opening contour with swirl channels and a swirl chamber. Ideally, this is done Adjusting the flow rate through the perforated disc in such a way that the deformation of the lower bottom layer of the perforated disc in Area is made at least one swirl channel, so that a material shift of the bottom layer in the free Flow cross-section of the at least one swirl channel into it is done.
  • several deformation stamps of the Deformation tool can advantageously at the same time the free flow cross sections of several Swirl channels are changed.
  • a deformation tool a fixed tool part as a perforated disc holder and at least one movable tool part in the form of a Deformation stamp includes.
  • FIG. 1 shows a Embodiment of a fuel injection valve with an inventively deformable perforated disc
  • Figure 2 a Perforated disk in a plan view
  • Figure 3 is a section along the line III-III in Figure 2 through the perforated disc
  • FIG. 4 shows a schematic section in the region of a Swirl channel of a perforated disc with a deformation tool.
  • Electromagnetically actuated valve in the form of a Injector for fuel injection systems of mixture-compression, spark-ignited internal combustion engines has one of a magnetic coil 1 at least partially surrounded, serving as inner pole of a magnetic circuit, tubular, largely hollow cylindrical core 2.
  • the Fuel injector is particularly suitable as High pressure injector for direct injection of Fuel in a combustion chamber of an internal combustion engine.
  • stepped bobbin 3 made of plastic takes up a winding of the magnetic coil 1 and allows in conjunction with the core 2 and an annular, non-magnetic, partially surrounded by the magnetic coil 1 Intermediate part 4 with an L-shaped cross section a particularly compact and short design of the injector in the region of the magnetic coil 1.
  • a continuous longitudinal opening. 7 provided, which extends along a valve longitudinal axis. 8 extends.
  • the core 2 of the magnetic circuit also serves as Fuel inlet, wherein the longitudinal opening 7 a Fuel supply channel represents.
  • an external metal (eg ferritic) housing part 14 which is used as external pole or outer guide element closes the magnetic circuit and the Magnet coil 1 at least in the circumferential direction completely surrounds.
  • a fuel filter 15 is provided for the Provides filtering out of such fuel components that due to their size in the injector blockages or Can cause damage.
  • the core 2 forms with the housing part 14, the inlet side End of the fuel injection valve.
  • Housing part 14 closes tightly and firmly a lower one tubular housing part 18, the z. B. an axial movable valve member consisting of an armature 19 and a rod-shaped valve needle 20 and a elongated valve seat carrier 21 encloses or receives.
  • the seal between the housing part 18 and the Valve seat carrier 21 is z. B. by means of a sealing ring 22.
  • the valve seat carrier 21 has over its entire axial extent an inner passage opening 24, the concentric with the valve longitudinal axis 8 extends.
  • the actuation of the injection valve takes place in known Way, here electromagnetic.
  • the electromagnetic circuit For the axial movement of Valve needle 20 and thus to open against the spring force one arranged in the longitudinal opening 7 of the core 2
  • Return spring 33 and closing the injector is used the electromagnetic circuit with the magnetic coil 1, the core 2, the housing parts 14 and 18 and the armature 19.
  • the anchor 19 is facing away from the valve closing portion 28 End of the valve needle 20 z. B. by a weld connected and aligned to the core 2.
  • Valve needle 20 To guide the Valve needle 20 during its axial movement with the armature 19th along the valve longitudinal axis 8 serves on the one hand in the Valve seat carrier 21 on the armature 19 facing the end provided guide opening 34 and on the other hand upstream of the valve seat member 26 arranged disc-shaped guide member 35 with a dimensionally accurate Guide opening 36.
  • the electromagnetic circuit can also be another excitable actuator, such as a piezostack, in used a comparable fuel injection valve be or actuating the axially movable valve member done by a hydraulic pressure or servo pressure.
  • a piezostack in used a comparable fuel injection valve be or actuating the axially movable valve member done by a hydraulic pressure or servo pressure.
  • the stroke of the valve needle 20 is determined by the mounting position of the Valve seat member 26 predetermined.
  • An end position of Valve needle 20 is in non-energized solenoid 1 by the system of the valve closing portion 28 at the Valve seat surface 27 of the valve seat member 26 set, while the other end position of the valve needle 20 at energized solenoid 1 by the system of the armature 19 at the downstream end face of the core 2 results.
  • the Surfaces of the components in the latter stop area For example, they are chrome plated.
  • the electrical contacting of the magnetic coil 1 and thus their excitement via contact elements 43, which still outside the bobbin 3 with a Plastic extrusion 44 are provided.
  • the Plastic extrusion 44 may also have more Components (eg housing parts 14 and 18) of the Fuel injection valve extend. From the Plastic extrusion 44 out runs an electrical Connecting cable 45, via which the energization of the solenoid coil 1 he follows.
  • the plastic extrusion 44 protrudes through the in this area interrupted upper housing part 14th
  • Valve seat member 26 Downstream of the valve seat surface 27 is in Valve seat member 26 has an outlet opening 53 introduced, by the with the valve open at the valve seat surface 27 along flowing fuel flows to subsequently in the Perforated disk 30, in particular designed as a swirl disk is to enter.
  • the perforated disc 30 is located for example in a recess 54 of a disc-shaped retaining element 55 before, wherein the holding member 55 fixed to the valve seat carrier 21 e.g. by welding, gluing or by jamming connected is.
  • the fastening variant shown in Figure 1 the perforated disc 30 is shown only simplified and shows only one of many to be varied Mounting options.
  • In the holding member 55 is downstream of the recess 54 has a central outlet opening 56 formed by the now swirling fuel the fuel injector leaves.
  • the perforated disc 30 has such an outer diameter that they taut with slight play in a receiving opening on Fuel injector, e.g. in the recess 54 of the Retaining element 55 or in an opening of the valve
  • FIG. 2 shows a perforated disc 30 comprising three sheet metal layers in a plan view
  • Figure 3 is a section along the line III-III in Figure 2 shows.
  • Is formed the Perforated disk 30 e.g. from three superimposed Sheet metal layers made from large sheet metal foils in the Discs are cut out, as it is e.g. From DE 197 24 075 A1 is known.
  • the upper cover layer 60 is with a smaller outer diameter than the two subsequent layers 61, 62 formed.
  • Such perforated disks 30 are also with two or more than three Layers can be produced.
  • the opening contour of the middle layer 61 is of an inner Swirl chamber 68 and a plurality of in the swirl chamber 68 opening swirl channels 66 formed.
  • the swirl channels 66 lead e.g. tangentially into the swirl chamber 68. While the Swirl chamber 68 completely covered by the cover layer 60 is the swirl channels 66 are only partially covered, since the swirl chamber 68 facing away from the outer ends form open at the top inlet portions 65.
  • the tangential confluence of the swirl channels 66 in the swirl chamber 68 receives the fuel imparted an angular momentum, the so also in a central circular outlet 69th the lower bottom layer 62 is maintained.
  • the diameter the outlet opening 69 is for example much smaller as the opening width of the immediately above it Swirl chamber 68.
  • Perforated disc 30 in the form of a swirl atomizing disk.
  • FIG. 4 schematically shows the perforated disc 30 in the region of a Twist channel 66 shown, in a sectional plane, perpendicular to the longitudinal extent of the swirl 66th runs.
  • Deformation tool 71 the e.g. a solid tool part as a perforated disc holder 72 and at least one movable Tool part in the form of a deformation punch 73 includes.
  • the perforated disc holder 72 provides together with the Valve seat member 26 for a safe and reliable Clamping the perforated disc 30 in a possibly required deformation of the perforated disc 30.
  • the Fixed Tool part 72 and the punch guide of at least one Deformation Stamp 73 takes over the fixed Tool part 72 and the punch guide of at least one Deformation Stamp 73.
  • this can be Deformation tool 71 such circular or be circular shaped that according to the number the swirl channels 66 the same number of deformation punch 73th are provided so that all swirl channels 66, if required to be changed at the same time in their cross section can.
  • the very easy Opening cross sections of one, several selected or all Swirl channels 66 of the perforated disc 30 vary and they Adjust flow rates.
  • the deformation the bottom layer 62 takes place until the dispensed Actual quantity of the specified target quantity of the individual or all Swirl channels 66 corresponds.
  • the flow measurement performed directly during the deformation process become.
  • the deformation tool 71 is again from the Perforated disk 30 removed.

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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)
  • Fuel-Injection Apparatus (AREA)

Claims (10)

  1. Procédé pour ajuster le débit d'un injecteur de carburant comportant un élément d'actionnement (1, 2, 19), un organe de fermeture d'injecteur (20, 28) qui peut coulisser axialement le long de l'axe (8) de l'injecteur et qui coopère pour ouvrir et fermer celui-ci avec un siège d'injecteur (27) réalisé sur un élément de siège (26), et un disque perforé (30) multicouche disposé en aval du siège (27), la quantité délivrée par l'injecteur ouvert étant mesurée pendant une première étape du procédé,
    caractérisé en ce que
    dans une seconde étape du procédé, une couche inférieure (62) constituant le fond du disque perforé (30) est déformée en direction du siège d'injecteur (27) de manière à pénétrer dans une section d'écoulement libre de la couche (61) située au-dessus, de sorte que la section dite d'écoulement à l'intérieur du disque perforé (30) est modifiée jusqu'à ce que le débit réel délivré corresponde au débit de consigne prédéfini.
  2. Procédé selon la revendication 2,
    caractérisé en ce que
    le disque perforé (30) déformable présente au moins deux couches métalliques, c'est-à-dire des disques (60, 61, 62).
  3. Procédé selon la revendication 2,
    caractérisé en ce que
    le disque perforé (30) est constitué de trois couches de tôle (60, 61, 62) superposées.
  4. Procédé selon la revendication 2 ou 3,
    caractérisé en ce que
    la couche inférieure (62) constituant le fond du disque perforé (30) présente une ouverture centrale de passage (69), tandis que la couche située directement dessus du côté amont par rapport à l'écoulement est constituée par une couche génératrice de rotation (61) comportant au moins un canal de rotation (66).
  5. Procédé selon la revendication 4,
    caractérisé en ce que
    plusieurs canaux de rotation (66) sont disposés périphériquement dans la couche génératrice de rotation (61).
  6. Procédé selon la revendication 4 ou 5,
    caractérisé en ce que
    la déformation de la couche de fond (62) a lieu dans la zone d'au moins un canal de rotation (66), de sorte que de la matière de la couche de fond (62) pénètre dans la section libre de passage d'au moins un canal de rotation (66).
  7. Procédé selon une des revendications précédentes,
    caractérisé en ce que
    la mesure du débit de carburant traversant le disque perforé (30) a lieu directement pendant le processus de déformation.
  8. Procédé selon une des revendications précédentes,
    caractérisé en ce que
    pour déformer la couche inférieure (62) constituant le fond du disque perforé (30), on utilise un outil de déformation (61) qui comprend une partie fixe d'outil en tant que surface d'accueil (72) du disque perforé, et au moins une partie d'outil mobile ayant la forme d'un poinçon de déformation (73).
  9. Procédé selon la revendication 8,
    caractérisé en ce que
    plusieurs poinçons de déformation (73) permettent d'effectuer en même temps, en différents endroits du disque perforé (30), des déformations de la couche de fond (62).
  10. Procédé selon les revendications 5 et 8,
    caractérisé en ce qu'
    au moyen de plusieurs poinçons de déformation (73), on modifie en même temps les sections d'écoulement libre de plusieurs canaux de rotation (66).
EP00972606A 1999-10-02 2000-09-29 Procede pour ajuster le debit au niveau d'une soupape d'injection de carburant Expired - Lifetime EP1135604B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19947780A DE19947780A1 (de) 1999-10-02 1999-10-02 Verfahren zum Einstellen der Strömungsmenge an einem Brennstoffeinspritzventil
DE19947780 1999-10-02
PCT/DE2000/003451 WO2001025620A1 (fr) 1999-10-02 2000-09-29 Procede pour ajuster le debit au niveau d'une soupape d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1135604A1 EP1135604A1 (fr) 2001-09-26
EP1135604B1 true EP1135604B1 (fr) 2005-04-20

Family

ID=7924457

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00972606A Expired - Lifetime EP1135604B1 (fr) 1999-10-02 2000-09-29 Procede pour ajuster le debit au niveau d'une soupape d'injection de carburant

Country Status (7)

Country Link
US (1) US6755347B1 (fr)
EP (1) EP1135604B1 (fr)
JP (1) JP2003511609A (fr)
CN (1) CN1131939C (fr)
CZ (1) CZ20011926A3 (fr)
DE (2) DE19947780A1 (fr)
WO (1) WO2001025620A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10056006A1 (de) 2000-11-11 2002-05-16 Bosch Gmbh Robert Brennstoffeinspritzventil
EP1312794B1 (fr) * 2001-11-16 2005-01-26 Robert Bosch Gmbh Injecteur de carburant
JP4088493B2 (ja) * 2002-02-07 2008-05-21 株式会社日立製作所 燃料噴射弁
US6899290B2 (en) * 2002-06-24 2005-05-31 Delphi Technologies, Inc. Fuel swirler plate for a fuel injector
DE10314670A1 (de) * 2003-04-01 2004-10-14 Robert Bosch Gmbh Verfahren zur Herstellung und Befestigung einer Lochscheibe
US20100314470A1 (en) * 2009-06-11 2010-12-16 Stanadyne Corporation Injector having swirl structure downstream of valve seat
DE102011056115A1 (de) * 2011-12-07 2013-06-13 Elringklinger Ag Sprühdüse
US11020758B2 (en) * 2016-07-21 2021-06-01 University Of Louisiana At Lafayette Device and method for fuel injection using swirl burst injector
JP2018193966A (ja) * 2017-05-22 2018-12-06 株式会社 Ａｃｒ 液体噴射ノズル
CN107989731B (zh) * 2017-11-24 2018-11-16 广西卡迪亚科技有限公司 一种单孔雾化喷油器及其前置雾化结构

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3641802A (en) 1969-09-17 1972-02-15 Parker Hannifin Corp Method and apparatus for setting the flow rate of a fuel injection nozzle
DE4025945C2 (de) 1990-08-16 1998-10-08 Bosch Gmbh Robert Verfahren zur Einstellung eines Brennstoffeinspritzventils und Brennstoffeinspritzventil
US5570841A (en) 1994-10-07 1996-11-05 Siemens Automotive Corporation Multiple disk swirl atomizer for fuel injector
DE19703200A1 (de) * 1997-01-30 1998-08-06 Bosch Gmbh Robert 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
DE19726991A1 (de) * 1997-06-25 1999-01-07 Bosch Gmbh Robert Ventil und Verfahren zur Herstellung eines Ventilsitzes für ein Ventil
EP0939858B1 (fr) * 1997-09-16 2004-04-28 Robert Bosch Gmbh Disque perfore ou disque de pulverisation et soupape injectrice dotee d'un tel disque perfore ou disque de pulverisation
US6199776B1 (en) * 1997-11-22 2001-03-13 Robert Bosch Gmbh Fuel injection valve and method for the production of a valve needle for a fuel injection valve
DE19815781A1 (de) * 1998-04-08 1999-10-14 Bosch Gmbh Robert Brennstoffeinspritzventil
DE19815789A1 (de) * 1998-04-08 1999-10-14 Bosch Gmbh Robert Brennstoffeinspritzventil
DE19815800A1 (de) * 1998-04-08 1999-10-14 Bosch Gmbh Robert Brennstoffeinspritzventil

Also Published As

Publication number Publication date
EP1135604A1 (fr) 2001-09-26
JP2003511609A (ja) 2003-03-25
CN1327514A (zh) 2001-12-19
US6755347B1 (en) 2004-06-29
DE50010102D1 (de) 2005-05-25
DE19947780A1 (de) 2001-04-12
WO2001025620A1 (fr) 2001-04-12
CN1131939C (zh) 2003-12-24
CZ20011926A3 (cs) 2002-03-13

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