EP1313942B1 - Rondelle de turbulence, notamment pour soupapes d'injection de carburant - Google Patents

Rondelle de turbulence, notamment pour soupapes d'injection de carburant Download PDF

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Publication number
EP1313942B1
EP1313942B1 EP01969233A EP01969233A EP1313942B1 EP 1313942 B1 EP1313942 B1 EP 1313942B1 EP 01969233 A EP01969233 A EP 01969233A EP 01969233 A EP01969233 A EP 01969233A EP 1313942 B1 EP1313942 B1 EP 1313942B1
Authority
EP
European Patent Office
Prior art keywords
swirl
disc
ducts
fuel
disc according
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
EP01969233A
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German (de)
English (en)
Other versions
EP1313942A1 (fr
Inventor
Guenter Dantes
Detlef Nowak
Joerg Heyse
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 EP1313942A1 publication Critical patent/EP1313942A1/fr
Application granted granted Critical
Publication of EP1313942B1 publication Critical patent/EP1313942B1/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
    • F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
    • F02M61/184—Discharge orifices having non circular sections
    • 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
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1853—Orifice plates
    • F02M61/186—Multi-layered orifice plates

Definitions

  • the invention is based on a swirl disk according to the Genus of claim 1.
  • From DE-OS 196 37 103 is already an electromagnetic operable fuel injector known in which Swirl generating means downstream of a valve seat are provided.
  • the swirl-generating agents are such shaped that at least two flows of fuel Can be generated that are radially offset from each other mutually enveloping and enveloping one have different directions of direction.
  • the order to generate the spray jet, which results from a inner and outer flow with different Directional sense is also included as guiding elements serving flow blades or multi-layer swirl attachments on a perforated disc quite complicated and in hers Production comparatively complex.
  • the swirl generating Means are designed so that from the Fuel injector is either a swirl Full cone jet or a twisted hollow cone jet exit.
  • the swirl disk according to the invention with the characteristic Features of claim 1 has the advantage that it is based on particularly simple and inexpensive to manufacture is.
  • a particular advantage is that the Swirl discs in a reproducible manner extremely precise in very large quantities can be manufactured at the same time (high batch capacity).
  • Swirl disc is without any additional attachments or other swirl generation aids Double jet of a spray device, in particular a fuel injector can be generated.
  • the swirl disk it is particularly advantageous to use the swirl disk to produce so-called multilayer electroplating. Because of your Such swirl discs are very metallic shatterproof and easy to assemble, for example Injectors or other spray nozzles from Liquids of all kinds.
  • the application of the Multilayer electroplating allows an extremely large one Freedom of design as the contours of the opening areas (Inlet areas, swirl channels, swirl chamber, Outlet openings) can be freely selected in the swirl disk. Especially when compared to silicon wafers where contours achievable due to the crystal axes strict are given (truncated pyramids), this is flexible Shape very advantageous.
  • Metallic deposition is particularly compared to Manufacturing silicon wafers the advantage of a very great variety of materials.
  • the upstream layer provides a cover layer which is the swirl chamber of a middle one Swirl generation layer completely covers.
  • the Swirl generation layer is made up of several material areas formed due to their contours and their geometrical position to each other the contours of the swirl chamber and the swirl channels.
  • swirl disk at least in the swirl disk two, but also four or six swirl channels are provided with which have at least two different twist directions in the Fuel are generated.
  • the material areas can according to the desired contouring of the swirl channels have very different shapes.
  • a fuel injector designed with a swirl disk according to the invention has the advantage that with it a very high atomization quality of a fuel to be sprayed and a desired one Dual beam shaping for certain installation conditions and Combustion chamber designs are achieved in a very simple manner. So with the fuel injector a twisted double radiation can be achieved, the two jet branches with their opposite direction of swirl form a double vortex. As a consequence, on one Injection valve of an internal combustion engine, etc. the Exhaust gas emissions from the internal combustion engine are reduced and likewise a reduction in fuel consumption can be achieved.
  • FIG. 1 shows a with a swirl disk equipped fuel injector in section
  • Figure 2 is a plan view of a swirl disk according to the invention
  • FIG. 3 a section along the line III-III in Figure 2.
  • Electromagnetically actuated valve in the form of a Injector for fuel injection systems from mixture-compressing, spark-ignition internal combustion engines has one of a magnetic coil 1 at least partially surrounding, serving as the 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.
  • later described swirl disc provides an injection valve (for Gasoline or diesel application, for direct or Manifold injection) is only an important area of application
  • These swirl discs can also be used in Inkjet printers, on nozzles for spraying Liquids of any kind or used with inhalers come.
  • the swirl disks according to the invention are entirely suitable generally.
  • An example of a stepped bobbin 3 made of plastic takes up a winding of the magnetic coil 1 and enables in connection with the core 2 and an annular, non-magnetic, partially surrounded by the magnet coil 1 Intermediate part 4 a particularly compact and short structure of the injection valve in the area of the solenoid coil 1.
  • the core 2 of the magnetic circuit also serves as Fuel inlet connector, the longitudinal opening 7 a Represents fuel supply channel.
  • an outer metal (e.g. ferritic) housing part 14 which as the outer pole or outer guide element closes the magnetic circuit and the Solenoid 1 completely at least in the circumferential direction surrounds.
  • a fuel filter 15 is provided for the Filtering out such fuel components ensures that due to their size in the injector clogging or Can cause damage.
  • the upper housing part 14 closes tightly and firmly lower tubular housing part 18 which, for. B. an axial movable valve part consisting of an armature 19 and a rod-shaped valve needle 20 or one encloses elongated valve seat support 21 or receives.
  • the two housing parts 14 and 18 are, for. B. with a circumferential weld seam firmly connected.
  • the seal between the housing part 18 and the Valve seat support 21 takes place, for. B. by means of a sealing ring 22nd
  • valve seat carrier 21 With its lower end 25, which also the downstream completion of the whole Fuel injector, surrounds the Valve seat carrier 21 in a through opening 24 fitted disc-shaped valve seat element 26 with a e.g. downstream frustoconical Valve seat surface 27.
  • Valve needle 20 arranged at its downstream end has a valve closing section 28.
  • valve closing section 28 This for example, tapering conically Valve closing section 28 acts in a known manner with the Valve seat surface 27 together.
  • valve seat element 26 swirl disk 30 according to the invention, for example by means of Multilayer electroplating is made and three on top of each other includes deposited metallic layers.
  • the injection valve is actuated in a known manner Way e.g. electromagnetically.
  • Way e.g. electromagnetically For the axial movement of the 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 or closing the injection valve is used the electromagnetic circuit with the magnetic coil 1, the core 2, the housing parts 14 and 18 and the armature 19.
  • the valve needle 20 during its axial movement with the armature 19 along the valve axis 8 serves on the one hand in Valve seat support 21 at the end facing armature 19 provided guide opening 34 and on the other arranged upstream of the valve seat element 26 disc-shaped guide element 35 with a dimensionally accurate Guide opening 36.
  • a other excitable actuator e.g. a piezostack
  • a comparable fuel injector is used or the actuation of the axially movable valve part by hydraulic pressure or servo pressure.
  • Pressed or screwed adjusting sleeve 38 is used Setting the spring preload using a centering piece 39 with its upstream side on the adjusting sleeve 38 adjacent return spring 33, which with their opposite side is supported on the anchor 19.
  • At anchor 19 are one or more bore-like flow channels 40 provided through which the fuel from the longitudinal opening 7th in the core 2 from downstream of the flow channels 40 trained connecting channels 41 near the guide opening 34 in the valve seat support 21 into the through opening 24 can reach.
  • the stroke of the valve needle 20 is determined by the installation position of the Valve seat element 26 predetermined. A final position of the Valve needle 20 is through when the magnet coil 1 is not energized the installation of the valve closing section 28 on the Valve seat surface 27 set while the other End position of valve needle 20 when solenoid coil 1 is excited by the installation of the armature 19 on the downstream End face of the core 2 results.
  • the electrical contacting of the magnetic coil 1 and thus their excitation takes place via contact elements 43, the outside of the bobbin 3 with a Plastic extrusion 44 are provided and further than Connection cable 45 run.
  • the plastic encapsulation 44 can also refer to other components (e.g. housing parts 14 and 18) of the fuel injector.
  • a first paragraph 49 in the through opening 24 serves as Contact surface for e.g. helical compression spring 50.
  • the compression spring 50 enveloping the valve needle 20 braced the guide element 35 in the valve seat carrier 21, because the opposite side of paragraph 49 the guide member 35 presses.
  • Downstream of the Valve seat surface 27 is a in valve seat element 26 Exit opening 53 introduced through which the at open valve on valve seat surface 27 along flowing fuel flows to subsequently into the Swirl disk 30 to enter.
  • the swirl disk 30 lies for example in a recess 54 of a disc-shaped Holding element 55 in front, the holding element 55 firmly with the Valve seat support 21 e.g. by welding, gluing or is connected by jamming.
  • In the holding element 55 is a central outlet opening 56 is formed through which the now twirled fuel the two-jet Fuel injector leaves.
  • Figure 2 shows a plan view of an inventive Swirl disk 30, while Figure 3 is a section along the Line III-III in Figure 2 shows.
  • the swirl disk 30 is formed from three galvanically layers, layers or layers that are separated from one another thus follow each other axially when installed.
  • the three layers of the swirl disk 30 are referred to following according to their function with cover layer 60, Swirl generation layer 61 and bottom layer 62.
  • the upper Cover layer 60 has a smaller outer diameter than the swirl generation layer 61 and this in turn one smaller outer diameter than the bottom layer 62.
  • the top cover layer 60 provides a closed one metallic layer that has no opening areas to Flows through, but flows around in a ring can.
  • the opening contour the middle layer 61 is covered by an inner swirl chamber 68 and a variety (e.g. two, four, six or eight) of swirl channels 66 opening into swirl chamber 68 educated.
  • the swirl disk 30 has four swirl channels 66.
  • Two Adjacent swirl channels 66a run parallel to Swirl chamber 68, while two other swirl channels 66b by 90 ° rotated to the swirl channels 66a and directly open tangentially opposite into the swirl chamber 68.
  • the one on each side of an imaginary Axis of symmetry 64 of the swirl disk 30 via a swirl channel 66a and swirl channel 66b form fuel flowing in one flow component so that in the swirl chamber 68 two opposite currents are generated.
  • the two Swirl channels 66b are, for example, vane-shaped Extensions 67 provided to the currents to a To direct outlet opening 69.
  • the angular momentum imprinted on the fuel remains in the middle outlet opening 69 of the bottom bottom layer 62 receive.
  • the two opposites remain Received currents that hosed off two jet branches 70 result.
  • the two flows meet in the swirl chamber 68 shortly before the outlet opening 69 or in the outlet opening 69 each other. Turn at the point of direct contact the two currents rectified so that they are immediately repel each other and the desired double radiation is amplified.
  • the width of e.g. 8-shaped outlet opening 69 is clear smaller than the opening width of the one immediately above it lying swirl chamber 68. This causes the Swirl chamber 68 increases the swirl intensity generated.
  • one outlet opening 69 can e.g. also two tight adjacent outlet openings 69 may be provided, which are ultimately separated from each other by a web. Then each outlet opening 69 becomes a flow (Beam branch 70), which is opposite the other Flow has an opposite direction of swirl. With the The distance between the two outlet openings 69 is the Adjustable jet shape.
  • the starting point for the process is a flat and stable one Carrier plate, the z. B. made of metal (titanium, steel), silicon, Glass or ceramic can exist.
  • the carrier plate optionally at least one auxiliary layer applied first.
  • a Electroplating start layer e.g. TiCuTi, CrCuCr, Ni
  • the application of the auxiliary layer happens z. B. by Sputtering or by electroless metal deposition.
  • Pretreatment of the carrier plate is carried out on the auxiliary layer Photoresist applied over the entire surface, e.g. rolled on or spun on.
  • the thickness of the photoresist should be the thickness of the Metal layer correspond to that in the later one Electroplating process should be realized, i.e. the thickness of the lower bottom layer 62 of the swirl disk 30.
  • Die Resist layer can consist of one or more layers photostructurable film or a liquid resist (Polyimide, photoresist) exist. If optional one Sacrificial layer in the lacquer structures created later is to be galvanized, the thickness of the photoresist is around to increase the thickness of the sacrificial layer.
  • the too Realizing metal structure should be with the help of a photolithographic mask inversely in the photoresist be transmitted.
  • One way is to Photoresist directly over the mask using UV exposure (PCB imagesetter or semiconductor imagesetter) expose (UV depth lithography) and subsequently to develop.
  • the negative structure ultimately created in the photoresist Later layer 62 of the swirl disk 30 is also galvanically Metal (e.g. Ni, NiCo, NiFe, NiW, Cu) filled up (Metal deposition).
  • the metal goes through it Electroplate closely to the contour of the negative structure, so that the given contours reproduce true to form in it become.
  • the steps from the optional application of the Auxiliary layer according to the number of desired Layers are repeated, so with a three-layer Swirl disk 30 two (lateral overgrowth) or three Electroplating steps are carried out.
  • one Swirl disk 30 can also be made of different metals used, but only in a new one Electroplating step can be used.

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

Claims (8)

  1. Rondelle de turbulence, notamment pour injecteurs de carburant, qui présente un plein passage pour un fluide, au moins une zone d'entrée (65) et au moins une ouverture de sortie (69) pratiquée dans une couche inférieure de fond (69), ainsi qu'au moins deux canaux de turbulence (66) débouchant dans une chambre de turbulence (68) qui est prévue dans une couche génératrice de turbulence (61),
    caractérisée en ce que
    au moins deux canaux de turbulence (66, 66b) sont dirigés l'un par rapport à l'autre de manière que, quand un fluide les traverse, il se produit deux courants turbulents en sens contraires situés côte à côte et qui donnent chacun une branche de jet (70).
  2. Rondelle de turbulence selon la revendication 1,
    caractérisée en ce que
    il est prévu quatre canaux de turbulence (66), deux canaux (66a) étant parallèles, tandis que les deux autres canaux (66b) sont tournés par rapport aux précédents et débouchent directement et tangentiellement l'un à l'autre, dans la chambre de turbulence (68).
  3. Rondelle de turbulence selon la revendication 1 ou 2,
    caractérisée en ce que
    deux canaux de turbulence (66, 66b) présentent des prolongements en forme de pale.
  4. Rondelle de turbulence selon une des revendications précédentes,
    caractérisée en ce que
    l'ouverture de sortie (69) a la forme d'un 8.
  5. Rondelle de turbulence selon une des revendications précédentes,
    caractérisée en ce que
    la couche supérieure de couvercle (60) présente un diamètre externe inférieur à ceux de la couche génératrice de turbulence (61) située en dessous et de la couche inférieure de fond (62).
  6. Rondelle de turbulence selon une des revendications précédentes,
    caractérisée en ce que
    les couches de la rondelle de turbulence (30) sont, par dépôt électrolytique de métal, réalisées directement adhérentes entre elles.
  7. Rondelle de turbulence selon la revendication 1,
    caractérisée en ce que
    elle est montée en aval du siège (27) d'un injecteur d'une installation d'injection de carburant dans un moteur à combustion interne, notamment pour injection directe de carburant dans une chambre de combustion du moteur.
  8. Rondelle de turbulence selon la revendication 7,
    caractérisée en ce que
    elle est constituée de manière à engendrer, dans le carburant qui la traverse, une double turbulence faisant que du double tourbillon produit dans la chambre de turbulence sont issues les deux branches de jet (70).
EP01969233A 2000-08-23 2001-08-21 Rondelle de turbulence, notamment pour soupapes d'injection de carburant Expired - Lifetime EP1313942B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10041440 2000-08-23
DE10041440A DE10041440A1 (de) 2000-08-23 2000-08-23 Drallscheibe und Brennstoffeinspritzventil mit Drallscheibe
PCT/DE2001/003106 WO2002016758A1 (fr) 2000-08-23 2001-08-21 Rondelle de turbulence et soupape d'injection de carburant pourvue d'une telle rondelle

Publications (2)

Publication Number Publication Date
EP1313942A1 EP1313942A1 (fr) 2003-05-28
EP1313942B1 true EP1313942B1 (fr) 2004-07-28

Family

ID=7653548

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01969233A Expired - Lifetime EP1313942B1 (fr) 2000-08-23 2001-08-21 Rondelle de turbulence, notamment pour soupapes d'injection de carburant

Country Status (7)

Country Link
US (1) US6764033B2 (fr)
EP (1) EP1313942B1 (fr)
JP (1) JP2004507646A (fr)
CN (1) CN1388864A (fr)
CZ (1) CZ20021381A3 (fr)
DE (2) DE10041440A1 (fr)
WO (1) WO2002016758A1 (fr)

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US7191961B2 (en) * 2002-11-29 2007-03-20 Denso Corporation Injection hole plate and fuel injection apparatus having the same
JP4017508B2 (ja) * 2002-11-29 2007-12-05 株式会社デンソー 燃料噴射装置
US7051957B1 (en) * 2004-11-05 2006-05-30 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
US7137577B2 (en) * 2004-11-05 2006-11-21 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
US7104475B2 (en) * 2004-11-05 2006-09-12 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
US7168637B2 (en) * 2004-11-05 2007-01-30 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
US7185831B2 (en) * 2004-11-05 2007-03-06 Ford Motor Company Low pressure fuel injector nozzle
US7198207B2 (en) * 2004-11-05 2007-04-03 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
US7438241B2 (en) * 2004-11-05 2008-10-21 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
US7124963B2 (en) * 2004-11-05 2006-10-24 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
JP5166500B2 (ja) * 2010-09-30 2013-03-21 日立オートモティブシステムズ株式会社 燃料噴射弁
JP5730024B2 (ja) * 2011-01-12 2015-06-03 三菱日立パワーシステムズ株式会社 噴霧ノズル及び噴霧ノズルを有する燃焼装置
DE102012211665A1 (de) * 2011-08-18 2013-02-21 Robert Bosch Gmbh Ventil für ein strömendes Fluid
JP5961383B2 (ja) * 2012-01-11 2016-08-02 日立オートモティブシステムズ株式会社 燃料噴射弁
US10344725B2 (en) * 2017-06-14 2019-07-09 Continental Powertrain, USA, LLC. Fluid injector spray disc having offset channel architecture, and methods for constructing and utilizing same
DE102018203065A1 (de) * 2018-03-01 2019-09-05 Robert Bosch Gmbh Verfahren zur Herstellung eines Injektors
KR20240003230A (ko) * 2022-06-30 2024-01-08 두산에너빌리티 주식회사 제트 노즐, 연소기 및 이를 포함하는 가스터빈

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Also Published As

Publication number Publication date
CN1388864A (zh) 2003-01-01
DE50103026D1 (de) 2004-09-02
CZ20021381A3 (cs) 2003-10-15
DE10041440A1 (de) 2002-03-07
US6764033B2 (en) 2004-07-20
US20020179740A1 (en) 2002-12-05
WO2002016758A1 (fr) 2002-02-28
JP2004507646A (ja) 2004-03-11
EP1313942A1 (fr) 2003-05-28

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