EP1402175B1 - Soupape d'injection de carburant - Google Patents

Soupape d'injection de carburant Download PDF

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Publication number
EP1402175B1
EP1402175B1 EP02729859A EP02729859A EP1402175B1 EP 1402175 B1 EP1402175 B1 EP 1402175B1 EP 02729859 A EP02729859 A EP 02729859A EP 02729859 A EP02729859 A EP 02729859A EP 1402175 B1 EP1402175 B1 EP 1402175B1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
swirl
injection valve
valve
valve 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
EP02729859A
Other languages
German (de)
English (en)
Other versions
EP1402175A1 (fr
Inventor
Günter DANTES
Detlef Nowak
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 EP1402175A1 publication Critical patent/EP1402175A1/fr
Application granted granted Critical
Publication of EP1402175B1 publication Critical patent/EP1402175B1/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
    • F02M61/186—Multi-layered 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
    • 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
    • F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
    • F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
    • 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
    • F02M61/1806—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

Definitions

  • the invention relates to a fuel injection valve according to the preamble of claim 1.
  • Swirl-generating means located downstream of the valve seat are typically designed to introduce fuel into radially outboard ends of swirl channels, which is then directed radially inwardly to a swirl chamber into which it enters with a tangential component. From the swirl chamber then exits the swirling fuel. From the DE-OS 198 15 775 A fuel injector is already known in which a swirl disk is provided downstream of the valve seat is, which has such a flow pattern. The swirl disk is supplied to the fuel disordered to inlet portions of the swirl channels; there is no targeted flow guidance to the swirl channels before.
  • the fuel injection valve according to the invention with the features of claim 1 has the advantage that with him a very high Zerstäubungsgüte a fuel to be sprayed is achieved. As a consequence, with such an injection valve of an internal combustion engine u.a. reduces the exhaust emission of the internal combustion engine and also a reduction in fuel consumption can be achieved.
  • the swirl channels of the swirl element are impinged very precisely and reliably by the fuel.
  • exactly the same number of supply channels are provided corresponding to the number of swirl channels of the downstream swirl element, which are directed towards the inlet ends of the swirl channels, so that the fuel supply of the swirl ducts is flow-directed.
  • the swirl element can be produced cost-effectively in a particularly simple manner.
  • a particular advantage is that the swirl elements can be reproduced in a very precise manner in very large quantities at the same time (high batchability).
  • FIG. 1 a partially illustrated fuel injection valve in section
  • FIG. 2 a plan view of the in the fuel injection valve according to FIG. 1 used twist element.
  • FIG. 1 As an exemplary embodiment, a valve in the form of an injection valve for fuel injection systems of mixture-compression spark-ignition internal combustion engines is shown partially and simplified.
  • the injection valve has a tubular valve seat carrier 1 in which a longitudinal opening 3 is formed concentrically to a valve longitudinal axis 2.
  • a valve needle 5 In the longitudinal opening 3, a valve needle 5 is arranged, which has a valve closing portion 7 at its downstream end.
  • the actuation of the injection valve takes place in a known manner, for example electromagnetically.
  • a schematically indicated electromagnetic circuit with a solenoid 10, an armature 11 and a core 12.
  • the armature 11 is connected to the valve closing portion. 7 opposite end of the valve needle 5 by z. B. connected by means of a laser weld and aligned with the core 12.
  • another excitable actuator e.g. a piezo stack to be used in a comparable fuel injection valve or the actuation of the axially movable valve member by a hydraulic pressure or servo pressure.
  • the guiding element 14 has at least one flow opening 15, through which fuel can flow from the longitudinal opening 3 in the direction of a valve seat to guide the valve needle 5 during the axial movement.
  • the e.g. disc-shaped guide member 14 is fixedly connected to a valve seat body 16, for example by means of a circumferential weld.
  • the valve seat body 16 is e.g. at the end remote from the core 12 of the valve seat support 1 by welding tightly mounted.
  • the position of the valve seat body 16 determines the size of the stroke of the valve needle 5, since the one end position of the valve needle 5 is fixed at non-energized solenoid 10 by the system of the valve closing portion 7 at a downstream conically tapered valve seat surface 22 of the valve seat body 16.
  • the other end position of the valve needle 5 is fixed in the excited magnet coil 10, for example, by the system of the armature 11 to the core 12.
  • the path between these two end positions of the valve needle 5 thus represents the stroke.
  • the valve closing portion 7 cooperates with the frusto-conical valve seat surface 22 of the valve seat body 16 to form a sealing seat. Downstream of the valve seat surface 22, the valve seat body 16 has a central outlet opening 23.
  • a disc-shaped receiving part 25th arranged, which serves the secure receiving a smaller, for example, also disc-shaped swirl element 26 and the targeted fuel supply to this swirl element 26.
  • the receiving part 25 is, for example, in turn secured to the valve seat body 16 by welding.
  • the receiving part 25 has a recess 32 for receiving the swirl element 26, wherein the axial depth of the recess 32 at least approximately the thickness of the swirl element 26 corresponds, so that the swirl element 26, for. flush with the end face 27 of the receiving part 25 closes.
  • the receiving part 25 corresponding to the number of radially inwardly extending swirl channels 28 of the swirl element 26 exactly the same number of bore-like feed channels 33 are provided, which are directed to outer inlet ends 34 of the swirl channels 28 out. All feed channels 33 of the receiving part 25 are supplied directly from fuel leaving the outlet opening 23. Starting from this central beginning of the feed channels 33, the feed channels 33 extend obliquely inclined with an axial and an outwardly directed radial component.
  • the feed channels 33 are inserted into the receiving part 25, e.g. introduced by drilling, eroding or laser drilling.
  • the swirl element 26 is a disk-shaped component, which is designed as a spray perforated disk and which is formed, for example, in two layers. About both layers of the swirl element 26 is formed with a peripheral edge which encloses an inner opening structure, in the upper, the valve seat body 16th facing the swirl channels 28 with their inlet ends 34 and an inner swirl chamber 30 includes, while the opening structure is formed in the lower layer of the swirl chamber 30 following outlet opening 29.
  • FIG. 2 shows a plan view of the in the fuel injection valve according to FIG. 1 used swirl element 26.
  • the swirl element 26 has, for example, four swirl channels 28, the inlet ends 34 are supplied with fuel from four feed channels 33, wherein exactly one feed channel ends at a swirl duct 28.
  • the swirl channels 28 extend radially inwardly from the inlet ends 34 in order to open tangentially into the swirl chamber 30 situated in the region of the valve longitudinal axis 2. From there, the swirling fuel leaves the swirl element 26 via the outlet opening 29.
  • the flow according to the invention of the swirl channels 28 of the swirl element 26 is completely independent of the manner of production of the swirl element 26. This can also be formed with other conventional production methods in metal, plastic or other materials.

Landscapes

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

Claims (10)

  1. Injecteur de carburant pour des installations d'injecteur de carburant de moteurs à combustion interne, notamment pour l'injection directe de carburant dans la chambre de combustion d'un moteur à combustion interne,
    ayant un axe longitudinal d'injecteur (2), un actionneur (10, 11, 12), une partie de soupape mobile (5, 7) servant à ouvrir et fermer l'injecteur en coopérant avec un siège de soupape fixe (22) réalisé sur le corps formant siège de soupape (16) et un élément de mise en rotation (26), en aval du siège de soupape (22), et ayant au moins un orifice d'entrée au moins un orifice de sortie (29) et au moins un canal de mise en rotation (28) en amont de l'orifice de sortie (29),
    caractérisé en ce que
    l'élément de mise en rotation (26) est logé dans une pièce de réception (25) dans laquelle un canal d'alimentation (33), est dirigé précisément vers chaque extrémité d'entrée (24) d'un canal de mise en rotation (28).
  2. Injecteur de carburant selon la revendication 1,
    caractérisé en ce qu'
    en aval du siège de soupape (22), le corps formant siège de soupape (16) comporte un orifice de sortie (23), central, qui alimente directement tous les canaux d'alimentation (33) de la pièce de réception (25).
  3. Injecteur de carburant selon la revendication 1 ou 2,
    caractérisé en ce que
    la pièce de réception (25) et l'élément de mise en rotation (26) sont réalisés chacun sous la forme d'un disque.
  4. Injecteur de carburant selon la revendication 3,
    caractérisé en ce que
    la face frontale aval (27) de la pièce de réception (25) comporte une cavité (32) recevant l'élément de mise en rotation (26).
  5. Injecteur de carburant selon l'une des revendications 1 à 4,
    caractérisé en ce que
    les canaux d'alimentation (33) sont réalisés sous la forme de perçages dans la pièce de réception (25).
  6. Injecteur de carburant selon l'une des revendications précédentes,
    caractérisé en ce que
    les canaux d'alimentation (33) sont inclinés en biais avec une composante axiale et une composante radiale dirigées vers l'extérieur.
  7. Injecteur de carburant selon les revendications 5 ou 6,
    caractérisé en ce que
    les canaux d'alimentation (33) sont formés par perçage, érosion ou perçage par laser.
  8. Injecteur de carburant selon l'une des revendications précédentes,
    caractérisé en ce que
    les canaux de mise en rotation (28) sont dirigés à partir de l'extrémité d'entrée (34), radialement vers l'intérieur, vers une chambre de mise en rotation (30).
  9. Injecteur de carburant selon l'une des revendications 1 à 8,
    caractérisé en ce que
    l'élément de mise en rotation (26) est fabriqué par un dépôt galvanique de métal sur plusieurs couches.
  10. Injecteur de carburant selon l'une des revendications précédentes,
    caractérisé en ce que
    la pièce de réception (25) est fixée au corps de siège de soupape (16).
EP02729859A 2001-04-12 2002-04-09 Soupape d'injection de carburant Expired - Lifetime EP1402175B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10118276 2001-04-12
DE10118276A DE10118276A1 (de) 2001-04-12 2001-04-12 Brennstoffeinspritzventil
PCT/DE2002/001288 WO2002084111A1 (fr) 2001-04-12 2002-04-09 Soupape d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1402175A1 EP1402175A1 (fr) 2004-03-31
EP1402175B1 true EP1402175B1 (fr) 2008-03-05

Family

ID=7681353

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02729859A Expired - Lifetime EP1402175B1 (fr) 2001-04-12 2002-04-09 Soupape d'injection de carburant

Country Status (7)

Country Link
US (1) US20040011895A1 (fr)
EP (1) EP1402175B1 (fr)
JP (1) JP2004518908A (fr)
CN (1) CN1461383A (fr)
CZ (1) CZ20023956A3 (fr)
DE (2) DE10118276A1 (fr)
WO (1) WO2002084111A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009243322A (ja) * 2008-03-31 2009-10-22 Hitachi Ltd 燃料噴射弁及びガイド部材の加工方法
CN102410121A (zh) * 2011-09-08 2012-04-11 何林霏 S型雾化喷嘴
JP5875442B2 (ja) * 2012-03-30 2016-03-02 日立オートモティブシステムズ株式会社 燃料噴射弁
JP5887291B2 (ja) * 2013-03-08 2016-03-16 日立オートモティブシステムズ株式会社 燃料噴射弁
JP6433162B2 (ja) * 2014-02-12 2018-12-05 株式会社エンプラス 燃料噴射装置用ノズルプレート
JP6524788B2 (ja) * 2015-05-11 2019-06-05 株式会社Ihi 燃料噴射装置およびエンジン
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
JP2021507175A (ja) * 2017-12-21 2021-02-22 スリーエム イノベイティブ プロパティズ カンパニー 渦流室を有する流体噴射器ノズル
DE112020000577T5 (de) * 2019-02-25 2021-12-23 Cummins Inc. Düse mit verwirbelungssitz
CN113279845B (zh) * 2021-05-23 2022-02-11 南岳电控（衡阳）工业技术股份有限公司 一种双级旋流尿素喷射器

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1843821A (en) * 1929-09-30 1932-02-02 Joslyn Diesel Engine Company L Fuel atomizing nozzle
DE827139C (de) * 1948-02-16 1952-01-07 Lucas Ltd Joseph Einspritzduese fuer Brennkraftmaschinen
JPS5854264B2 (ja) * 1979-02-23 1983-12-03 トヨタ自動車株式会社 定圧型燃料噴射弁
DE3013007C2 (de) * 1980-04-03 1994-01-05 Bosch Gmbh Robert Einspritzventil für Kraftstoffeinspritzanlagen von Brennkraftmaschinen
JPS60222557A (ja) * 1984-04-20 1985-11-07 Hitachi Ltd 電磁式燃料噴射弁
DE3943005A1 (de) * 1988-12-28 1990-07-05 Hitachi Ltd Elektromagnetische einspritzventilvorrichtung
US5570841A (en) * 1994-10-07 1996-11-05 Siemens Automotive Corporation Multiple disk swirl atomizer for fuel injector
DE19607277A1 (de) 1995-03-29 1996-10-02 Bosch Gmbh Robert Lochscheibe, insbesondere für Einspritzventile
EP0787254B1 (fr) * 1995-03-29 2002-06-12 Robert Bosch Gmbh Disque perfore, notamment pour soupapes injectrices
DE19815800A1 (de) * 1998-04-08 1999-10-14 Bosch Gmbh Robert Brennstoffeinspritzventil
DE19815775A1 (de) 1998-04-08 1999-10-14 Bosch Gmbh Robert Drallscheibe und Brennstoffeinspritzventil mit Drallscheibe

Also Published As

Publication number Publication date
CN1461383A (zh) 2003-12-10
CZ20023956A3 (en) 2004-07-14
JP2004518908A (ja) 2004-06-24
EP1402175A1 (fr) 2004-03-31
DE10118276A1 (de) 2002-10-17
WO2002084111A1 (fr) 2002-10-24
DE50211838D1 (de) 2008-04-17
US20040011895A1 (en) 2004-01-22

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