EP2521853A1 - Soupape d'injection de carburant - Google Patents

Soupape d'injection de carburant

Info

Publication number
EP2521853A1
EP2521853A1 EP10787447A EP10787447A EP2521853A1 EP 2521853 A1 EP2521853 A1 EP 2521853A1 EP 10787447 A EP10787447 A EP 10787447A EP 10787447 A EP10787447 A EP 10787447A EP 2521853 A1 EP2521853 A1 EP 2521853A1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
injection valve
flow
valve
regions
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
EP10787447A
Other languages
German (de)
English (en)
Other versions
EP2521853B1 (fr
Inventor
Martin Buehner
Kai Gartung
Peter Land
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 EP2521853A1 publication Critical patent/EP2521853A1/fr
Application granted granted Critical
Publication of EP2521853B1 publication Critical patent/EP2521853B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F02M61/16—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
    • 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
    • F02M61/1886—Details of valve seats not covered by groups F02M61/1866 - F02M61/188
    • 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
    • F02M2200/85—Mounting of fuel injection apparatus
    • F02M2200/858—Mounting of fuel injection apparatus sealing arrangements between injector and engine

Definitions

  • the invention relates to a fuel injection valve according to the preamble of the main claim.
  • Cylinder head of an internal combustion engine is installed.
  • Fuel injection valve of this type is already known from DE 10 2006 049 253 AI.
  • the fuel injection valve has an excitable actuator in the form of an electromagnetic circuit and a valve element which can be moved along a valve longitudinal axis, wherein a valve closure member sealingly cooperates with a valve seat with a valve seat.
  • a valve seat body attached to a nozzle body at the ejection-side end of the fuel injector has circumferentially a plurality of flow areas upstream of the valve body
  • Valve seat between which each guide areas for the valve element lie. Downstream of the valve seat are more in the valve seat body
  • the fuel injector is particularly suitable for use in fuel injection systems of
  • the fuel injection valve according to the invention with the characterizing features of claim 1 has the advantage that achieved in a simple manner producible improved flow of spray orifices and as a result, a reduction in dispersion over known solutions in which the number of injection ports does not match the number of Anströmpfaden upstream of the valve seat , is achieved in the jet and flow characteristics.
  • At least two flow-through regions upstream of the valve seat differ in size, such as circumferential width and / or radial depth, and / or contour. Depending on the number of
  • Spray orifices are the flow-through in width and depth advantageously changed so that wider and deeper, or both wider and deeper flow areas are designed so that they safely and reliably cover the quantity required for two spray orifices, while the narrower and at the same time having a small depth or on the one hand narrower and on the other hand flat flow areas are reduced so that a sufficient amount of fuel for exactly one
  • Figure 1 is a partially illustrated fuel injection valve in a
  • FIG. 1 shows the discharge side end II of the fuel injection valve according to
  • FIG. 3 shows a sectional view along the line III-III of FIG. 2
  • Figure 4 shows a first embodiment of an inventive
  • Figure 5 shows a second embodiment of an inventive
  • Figure 6 shows a third embodiment of an inventive
  • FIG. 1 A known fuel injection valve will briefly be described in its basic structure with reference to FIG. In the figure 1 is as a
  • Embodiment a valve in the form of an injection valve 1 for
  • the fuel injection valve 1 which is designed in the form of a direct-injection injector for injecting fuel directly into a combustion chamber 25 of the internal combustion engine, in a
  • a sealing ring 2 in particular of Teflon®, ensures optimum sealing of the fuel injection valve 1 with respect to the wall of the receiving bore 20 of the cylinder head 9.
  • a shoulder 21 of a valve housing 22 whose downstream end is designed as a nozzle body 18, or a lower end face 21 of a support element 19 and a e.g. at right angles to the longitudinal extent of the
  • Receiving bore 20 extending shoulder 23 of the receiving bore 20 is a flat intermediate element 24 is inserted, which is designed in the form of a washer.
  • the fuel injection valve 1 has at its upstream end 3 a
  • the connecting piece 6 is in this case e.g. in one piece from the actual Brennstoffverteilerieitung 4 and has upstream of the receiving opening 12 a smaller diameter
  • the fuel injection valve 1 has an electric
  • Hold-down bracket 13 extends, which rests against a downstream end surface 14 of the connecting piece 6 on the fuel distribution line 4 in the installed state.
  • the discharge-side end 17 of the fuel injection valve 1 according to FIG. 1 is provided with a plurality of flow-through regions 26 in FIG. 2
  • Nozzle body 18 shown in an enlarged view.
  • Fuel injector 1 includes at least one excitable actuator (not shown), such as an actuator. an electromagnetic circuit, a piezoelectric or magnetostrictive actuator, and a valve along a longitudinal axis 27 movable valve element.
  • the valve element, not shown (valve needle,
  • Valve closure member sealingly cooperates with a valve seat 28, for example, at the downstream end of a blind hole 29 in the
  • Nozzle body 18 itself is formed. Upstream of the valve seat 28, a plurality of through-flow regions 26 are formed in the wall of the blind bore 29 of the nozzle body 18. These flow-through regions 26 are formed in the form of flow-through pockets which contribute to the fuel
  • the reference numeral 18 is intended in particular also a on a
  • Nozzle body attached valve seat body as it e.g. in Figure 2 of
  • FIG. 3 shows a sectional view along the line III-III of the known nozzle body 18 shown in FIG. 2. It becomes clear from this view that the flow-through regions 26 form longitudinal groove-like flow pockets which
  • FIG. 4 shows a first embodiment of a fuel injection valve 1 according to the invention in the region of its nozzle body 18 in a
  • FIG. 5 shows a second embodiment of a fuel injection valve 1 according to the invention in the region of its nozzle body 18 in a
  • the flow-through regions 26 are now changed in their depth so that e.g. deeper flow areas 26 are designed so that they safely and reliably cover the quantity required for two spray openings 32, while the low-depth flow areas 26 are so reduced compared to the known solution according to Figure 3 that a sufficient amount of fuel for exactly one
  • Spray opening 32 is provided. In this way, a uniform and temporally stable flow of the ejection openings 32 is ensured, thus achieving a reduction in the scattering of jet and flow characteristics.
  • the maximum depth of the fürström Schemee 26 is u.a. determined by the compressive strength of the nozzle body 18 at its downstream end 17.
  • FIG 6 is a third embodiment of a fuel injection valve 1 according to the invention in the region of its nozzle body 18 in a
  • an asymmetrical distribution of the flow areas 26 can be generated over the circumference, so that a uniform distribution of the flow areas 26 is abandoned, the geometry and the
  • guide surfaces of the guide portions 30 vary.

Landscapes

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

Abstract

La soupape d'injection de carburant selon l'invention se caractérise en particulier par le fait qu'un flux abordant uniforme et stable dans le temps des ouvertures de pulvérisation (32) est généré et donc qu'une réduction de dispersion est obtenue avec les paramètres de jet et de débit. La soupape d'injection de carburant (1) comprend au moins un actionneur excitable et un élément de vanne pouvant être déplacé le long d'un axe longitudinal de vanne, qui coopère de façon étanche avec un siège de soupape (28). En amont du siège de soupape (28) sont prévues sur le pourtour plusieurs zones de traversée (26), entre chacune desquelles sont disposées à chaque fois des zones de guidage (30) pour l'élément de soupape. Les ouvertures de pulvérisation (32) en aval du siège de soupape (28), dont le nombre s'écarte du nombre des zones de traversée (26), délivrent le carburant avec une fine pulvérisation. Au moins deux zones de traversée (26) se différencient dans la taille, de même que dans la largeur périphérique et/ou la profondeur radiale et/ou le contour. La soupape d'injection de carburant convient en particulier pour l'injection directe de carburant dans un espace de combustion d'un moteur à combustion interne comprimant le mélange et à allumage extérieur.
EP10787447.1A 2010-01-08 2010-12-06 Soupape d'injection de combustible Active EP2521853B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010000754A DE102010000754A1 (de) 2010-01-08 2010-01-08 Brennstoffeinspritzventil
PCT/EP2010/068957 WO2011082916A1 (fr) 2010-01-08 2010-12-06 Soupape d'injection de carburant

Publications (2)

Publication Number Publication Date
EP2521853A1 true EP2521853A1 (fr) 2012-11-14
EP2521853B1 EP2521853B1 (fr) 2019-02-20

Family

ID=43570911

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10787447.1A Active EP2521853B1 (fr) 2010-01-08 2010-12-06 Soupape d'injection de combustible

Country Status (8)

Country Link
US (1) US9133803B2 (fr)
EP (1) EP2521853B1 (fr)
JP (1) JP5808340B2 (fr)
KR (1) KR101815841B1 (fr)
CN (1) CN102713245B (fr)
BR (1) BR112012016282A2 (fr)
DE (1) DE102010000754A1 (fr)
WO (1) WO2011082916A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014101308B4 (de) * 2014-02-03 2022-01-27 Stoba Holding Gmbh & Co. Kg Kraftstoffeinspritzdosiereinrichtung, Kraftstoffeinspritzdüse, Werkzeug zum Herstellen einer Kraftstoffeinspritzdosiereinrichtung und Verfahren zum Herstellen einer Kraftstoffdosiereinrichtung
DE102015226769A1 (de) * 2015-12-29 2017-06-29 Robert Bosch Gmbh Brennstoffeinspritzventil
GB2553838B (en) * 2016-09-16 2020-01-29 Perkins Engines Co Ltd Fuel injector and piston bowl
DE102017205483A1 (de) * 2017-03-31 2018-10-04 Robert Bosch Gmbh Ventilhülse eines Injektors sowie Herstellungsverfahren dafür
DE102017219866A1 (de) 2017-11-08 2019-05-09 Robert Bosch Gmbh Aufhängung für Einspritzanlagen, insbesondere Brennstoffeinspritzanlagen, mit einer Fluid führenden Komponente und einem Zumessventil sowie Einspritzanlage
DE102018216970A1 (de) * 2018-10-04 2020-04-09 Robert Bosch Gmbh Brennstoffeinspritzvorrichtung
US20230064203A1 (en) * 2021-08-25 2023-03-02 Caterpillar Inc. Fuel injector having controlled nozzle tip protrusion in cylinder head and cylinder head assembly with same

Family Cites Families (15)

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Publication number Priority date Publication date Assignee Title
US4408722A (en) * 1981-05-29 1983-10-11 General Motors Corporation Fuel injection nozzle with grooved poppet valve
DE3911910A1 (de) 1989-04-12 1990-10-18 Bosch Gmbh Robert Kraftstoffeinspritzventil
JP2726705B2 (ja) 1989-07-12 1998-03-11 三井東圧化学株式会社 ポリアミド溶液の製造方法
DE4025945C2 (de) 1990-08-16 1998-10-08 Bosch Gmbh Robert Verfahren zur Einstellung eines Brennstoffeinspritzventils und Brennstoffeinspritzventil
JP3134813B2 (ja) 1997-06-20 2001-02-13 トヨタ自動車株式会社 内燃機関の燃料噴射弁
JP2000274328A (ja) 1999-03-25 2000-10-03 Hitachi Ltd 筒内噴射用燃料噴射弁
JP3915347B2 (ja) * 1999-11-05 2007-05-16 株式会社日立製作所 燃料噴射弁
DE10046304C1 (de) * 2000-09-19 2002-06-06 Bosch Gmbh Robert Verfahren zum Herstellen eines Ventilsitzkörpers eines Brennstoffeinspritzventils
DE10055483B4 (de) * 2000-11-09 2007-11-29 Robert Bosch Gmbh Brennstoffeinspritzventil
DE10240827A1 (de) * 2002-09-04 2004-03-18 Robert Bosch Gmbh Kraftstoffeinspritzventil für Brennkraftmaschine
JP2006214292A (ja) * 2005-02-01 2006-08-17 Hitachi Ltd 燃料噴射弁
US7828232B2 (en) * 2005-04-18 2010-11-09 Denso Corporation Injection valve having nozzle hole
DE102006049253A1 (de) 2006-10-19 2008-04-30 Robert Bosch Gmbh Brennstoffeinspritzventil
DE102007026122A1 (de) 2007-06-05 2008-12-11 Volkswagen Ag Kraftstoffeinspritzdüse für eine Brennkraftmaschine
US20090255998A1 (en) 2008-04-10 2009-10-15 Sudhakar Das Fuel injection tip

Non-Patent Citations (1)

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Title
See references of WO2011082916A1 *

Also Published As

Publication number Publication date
JP2013516569A (ja) 2013-05-13
US9133803B2 (en) 2015-09-15
KR20120101528A (ko) 2012-09-13
WO2011082916A1 (fr) 2011-07-14
BR112012016282A2 (pt) 2017-03-07
JP5808340B2 (ja) 2015-11-10
US20130062441A1 (en) 2013-03-14
CN102713245A (zh) 2012-10-03
KR101815841B1 (ko) 2018-01-08
EP2521853B1 (fr) 2019-02-20
DE102010000754A1 (de) 2011-07-14
CN102713245B (zh) 2019-08-27

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