WO1994000686A1 - Disque perfore d'injection pour soupape et son procede de fabrication - Google Patents

Disque perfore d'injection pour soupape et son procede de fabrication Download PDF

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Publication number
WO1994000686A1
WO1994000686A1 PCT/DE1993/000481 DE9300481W WO9400686A1 WO 1994000686 A1 WO1994000686 A1 WO 1994000686A1 DE 9300481 W DE9300481 W DE 9300481W WO 9400686 A1 WO9400686 A1 WO 9400686A1
Authority
WO
WIPO (PCT)
Prior art keywords
spray
valve
openings
injection
axis
Prior art date
Application number
PCT/DE1993/000481
Other languages
German (de)
English (en)
Inventor
Ferdinand Reiter
Martin Maier
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 WO1994000686A1 publication Critical patent/WO1994000686A1/fr

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
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • 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
    • F02M51/0682—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 the body being hollow and its interior communicating with the fuel flow
    • 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

  • JP-OS 3-111 660 discloses a curved orifice plate with a plurality of Cylindrical spray orifices inclined relative to the longitudinal axis of the valve.
  • the spray openings are first formed in a flat sheet metal section by stamping.
  • the spray orifice plate is bent by means of a bending tool around the injection-side, frustoconical end of a fuel injection valve, so that the perforated plate is given an approximately conical shape which is rounded in the region of the tip of the cone.
  • this known spray hole disk has the disadvantage that, despite the deformation of the spray hole disk, the spray openings maintain their cylindrical shape obtained by stamping.
  • good preparation and good jet stability of the fuel dispensed through the spraying openings is not always guaranteed, since there is a risk that in the edge region of the spraying openings when the fuel emerges fuel collects in the spray openings, which then drips off or is carried away at a later time.
  • the spray-perforated disk according to the invention with the characterizing features of claim 1 has the advantage over the prior art that good jet stability and good preparation of the medium jet emitted by the at least one spray orifice result and fluttering of the jet is avoided.
  • the method according to the invention for the production of a spray hole disk with the characterizing features of claim 9 has the advantage of allowing a particularly simple and inexpensive manufacture of the spray hole disk with spray cone-widening spray openings.
  • the spray openings can be formed very precisely and with only a slight burr formation.
  • a tool used to form the spray openings need not be changed as a function of the angle of inclination of the spray openings with respect to the longitudinal axis of the valve.
  • the deep-drawing of the spray hole disk leads to the widening of the spray openings formed in the central region of the spray hole disk.
  • the central region of the spray orifice plate is domed in the direction facing away from the valve seat surface. It is particularly advantageous if the at least one spray opening is formed by punching by means of a punch which acts parallel to the longitudinal valve axis or by eroding by means of an eroding electrode acting parallel to the longitudinal valve axis, so that the spray openings are very precise and simple in a cost-effective manner are formed with only a slight burr formation.
  • FIG. 1 shows a partially illustrated fuel injection valve with an injection orifice disk according to the invention in accordance with a first exemplary embodiment
  • FIG. 2 shows the production of an injection orifice disk in accordance with the invention in accordance with the first exemplary embodiment
  • FIG. 3 shows the injection orifice disk in accordance with the first embodiment before it is plastically deformed
  • 4 shows the spray hole disk according to the first embodiment after its plastic deformation
  • FIG. 5 shows a partial view of the spray hole disk shown in FIG. 4 in the direction of arrow X in FIG. 4
  • FIG. 6 shows a spray hole disk according to a second embodiment in front of it plastic deformation
  • FIG. 1 shows a partially illustrated fuel injection valve with an injection orifice disk according to the invention in accordance with a first exemplary embodiment
  • FIG. 2 shows the production of an injection orifice disk in accordance with the invention in accordance with the first exemplary embodiment
  • FIG. 3 shows the injection orifice disk in accordance with the first embodiment before it is plastically deformed
  • FIG. 7 shows the spray hole disk according to the second embodiment after its plastic deformation
  • FIG. 8 shows a partial view of the spray hole disk according to the second embodiment in the direction of arrow Y in FIG. 7, FIG 10, the spray hole disk according to the third embodiment after its plastic deformation
  • FIG. 11 a partial view of the spray hole disk according to the third embodiment in the direction of arrow Z in FIG. 10.
  • FIG. 1 a valve in the form of an injection valve for fuel injection systems of mixture-compressing spark-ignition internal combustion engines is partially shown.
  • the injection valve has a tubular seat support 1, in which a longitudinal bore 3 is formed concentrically with a valve longitudinal axis 2.
  • a longitudinal bore 3 is formed concentrically with a valve longitudinal axis 2.
  • the injection valve is actuated in a known manner, for example electromagnetically.
  • An indicated electromagnetic circuit with a magnetic coil 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 or closing of the injection valve.
  • the armature 11 is connected to the end of the valve body 7 facing away from the Valve needle 5 connected and aligned with the core 12.
  • a guide opening 16 of a valve seat body 18 is used to guide the valve closing body 7 during the axial movement.
  • the circumference of the valve seat body 18 has a slightly smaller diameter than the diameter of the longitudinal bore 3 of the seat carrier 1.
  • On its one lower end face facing away from the valve closing body 7 page 19 is the valve seat body 18 with a bottom part 21 of an example Pot-shaped spray plate 22 concentrically and firmly connected, so that the bottom part 21 with its upper end face
  • valve seat body 18 bears against the lower end face 19 of the valve seat body 18.
  • connection of valve seat body 18 and spray orifice plate 22 takes place, for example, by a circumferential and tight, e.g. first weld seam 24 formed by means of a laser. This type of assembly poses the risk of undesired deformation of the base part
  • the base part 21 of the spray orifice plate 22 is domed in a central region 29, in which the spray openings 27 are formed, in the direction of the valve closing body 7 facing away from the dome.
  • the spray openings 27 are inclined outwards in the flow direction of the fuel with respect to the longitudinal valve axis 2 and run perpendicular to the plane of the central region 29 of the base part 21.
  • a circumferential retaining edge 31 which extends in the axial direction facing away from the valve seat body 18 and is conically bent outwards up to its end 32.
  • the holding edge 31 has at its end 32 a larger diameter than the diameter of the longitudinal bore 3 of the seat support 1. Due to the smaller diameter of the circumference of the valve seat body 18 compared to the longitudinal bore 3 of the seat support 1, only lies between the longitudinal bore 3 and the easy Holding edge 31 of the spray-perforated disk 22, which is designed to be conically curved outwards, exerts a radial pressure, the holding edge 31 exerting a radial spring action on the wall of the longitudinal bore 3.
  • the insertion depth of the valve seat part consisting of valve seat body 18 and cup-shaped spray orifice plate 22 into the longitudinal bore 3 of the seat support 1 determines the presetting of the stroke of the valve needle 5, since the one end position of the valve needle 5 when the solenoid coil 10 is not excited due to the valve closing body being in contact 7 is fixed to a valve seat surface 34 of the valve seat body 18.
  • the other end position of the valve needle 5 is determined when the solenoid 10 is excited, for example by the armature 11 resting on the core 12. The path between these two end positions of the valve needle 5 represents the stroke.
  • the holding edge 31 of the spray perforated disk 22 is connected to the wall of the longitudinal bore 3, for example by a circumferential and tight second weld seam 36.
  • the second weld 36 is formed exactly like the first weld 24, for example by means of a laser.
  • a tight welding of valve seat body 18 and spray hole disk 22 as well as spray hole disk 22 and seat support 1 is necessary so that the medium used, for example a fuel, does not pass between the longitudinal bore 3 of the seat support 1 and the circumference of the valve seat body 18 can flow directly into a suction line of the internal combustion engine through the spray openings 27 or between the longitudinal bore 3 of the seat support 1 and the holding edge 31 of the cup-shaped spray hole disk 22.
  • One attachment point is the first weld seam 24 with the valve seat body 18 and the second attachment point is the second weld seam 36 with the seat support 1.
  • the spherical valve closing body 7 interacts with the valve seat surface 34 of the valve seat body 18 which tapers in the shape of a truncated cone and is formed in the axial direction between the guide opening 16 and the lower end face 19 of the valve seat body 18.
  • the guide opening 16 has at least one flow passage 38 which between the valve interior 40 bounds in the radial direction through the longitudinal bore 3 of the seat support 1 and a flow in the flow direction Guide opening 16 and the valve seat surface 34 of the valve seat body 18 formed annular groove 42, which is in the open state of the valve with the spray openings 27 of the spray plate 22 in connection.
  • the diameter of the guide opening 16 is designed such that the spherical valve The closing body 7 projects through the guide opening 16 with a small radial distance.
  • a protective cap 45 is arranged on the periphery of the seat carrier 1 at its downstream end facing away from the magnet coil 10 and is connected to the periphery of the seat carrier 1 by means of a latching connection 46.
  • the protective cap 45 rests with a first end radial section 47 on a lower end 48 of the seat support 1. In the direction facing the magnet coil 10, the first radial section 47 of the protective cap 45 is first adjoined by an axially extending parallel section 49 and by a second radial section 50 pointing radially outward.
  • a sealing ring 51 is arranged in an annular groove 53, the side surfaces of which, through an end face 54 of the second radial section 50 of the protective cap 45 facing the magnetic coil 10, and through a radially outwardly facing contact surface 55 of the seat support 1 and the groove base 57 of the circumference of the seat support 1 are formed.
  • the sealing ring 51 serves to seal between the circumference of the injection valve and a valve receptacle, not shown, for example the intake line of the internal combustion engine.
  • FIG. 2 shows, in a highly simplified manner, the structure for plastically deforming a sheet metal section 60 forming the spray orifice plate 22 by means of deep drawing.
  • the sheet metal section 60 which has at least one, for example four, spray openings 27 formed parallel to the longitudinal axis 2 of the valve, is held by a die 62, which is shown in simplified form, and by means of a deep-drawing tool 64 on its bottom part 21 in the central region having the spray openings 27 29 deformed in such a way that the central region 29 of the base part 21 forms, at least in the region of the spray openings 27, for example a spherical cap section facing the end 32 of the holding edge 31 of the later spray perforated disc 22.
  • the diameter 66 is a die opening 67 into which the middle region 29 of the sheet metal section 60 is pressed by means of the deep-drawing tool 64, depending on the deep-drawing tool 64 and the desired axial extent of the spherical cap section of the central region 29.
  • FIG. 3 shows a sheet metal section 60, in which, by means of punching, parallel to the valve longitudinal axis 2, that is to say perpendicularly to the upper end face 20 of the sheet metal section 60, punch 70 acts in the central region 29, for example four spray openings 27, e.g. are formed at the same distance from one another and to the longitudinal valve axis 2, as in FIG. 5, which shows a view of the spray orifice plate 22 shown in FIG. 4 according to the first exemplary embodiment according to the invention shown in FIG. 1 in the direction of arrow X in FIG. 4 is.
  • the pot-shaped sheet metal section 60 in which is also shown in FIG.
  • the four spray openings 27, for example, are inclined outwards in relation to the longitudinal axis 2 of the valve in the direction of flow of the medium and widen in the shape of a truncated cone in this medium flow direction, that is to say the cross section of the spray openings 27 starts from the upper end face 20 to a bottom end Spray face 23 of the spray plate 22 always larger.
  • the second exemplary embodiment according to the invention shown in FIGS. 6 to 8 differs from the first exemplary embodiment according to the invention shown in FIGS. 1 to 5 essentially only in that in the sheet metal section 60 or the spraying orifice plate 22 in the central region 29 only two spray openings 27 are provided and that these spray openings 27 are are produced parallel to the valve longitudinal axis 2, that is perpendicular to the upper end face 20 of eroding electrodes 72.
  • the two spray openings 27 can be seen, for example, along one in the plane, as shown in FIG. 8, which shows a view of the spray hole disk 22 shown in FIG.
  • spherical cap-shaped central region 29 of the base part 21 for example, two cone-shaped spray openings 27.
  • the two spray openings 27 are formed in a half 80 of the bottom part 21, which is delimited by a transverse axis 77 running perpendicular to the central axis 75 and intersecting the valve longitudinal axis 2, at the same distance from the longitudinal valve axis 2 and are at the same distance from the through the central axis 75 passing through the longitudinal axis 2 of the valve, as shown in FIG. 11, which shows a view of the spray orifice plate 22 in the direction of the arrow Z in FIG. 10.
  • a sheet metal section 60 is thus first produced, for example with a peripheral holding edge 31 and a flat bottom part 21. Then in the sheet metal section 60, for example by stamping or eroding, the at least one spray opening 27 parallel to the valve longitudinal axis 2 formed, the punch 70 and the eroding electrodes 72 act parallel to the valve longitudinal axis. Subsequently, the sheet metal section 60 is deformed into a spherical cap shape in a central region 29 having the spray openings 27 by means of a deep-drawing tool 64, for example in the direction of the end 32 of the holding edge 31. In such an orifice plate 22, the spray openings 27 are inclined outward in the medium flow direction with respect to the valve longitudinal axis 2 and widen in the shape of a truncated cone in the medium flow direction.
  • the method according to the invention has the advantage of forming the spray openings 27 in a very precise manner and of ensuring a slight burr formation of the spray openings 27.
  • it is not necessary to change the punching tool having the punch 70. It is easier, e.g. to vary the embossing depth when deep-drawing sheet metal section 60.

Abstract

On connaît déjà un disque perforé d'injection pour soupape d'injection de carburant, présentant une ouverture d'injection cylindrique, inclinée par rapport à l'axe longitudinal de la soupape. Les ouvertures d'injection sont parallèles à l'axe longitudinal de la soupape, et produites par estampage dans le disque perforé d'injection initialement plan. Le disque est ensuite incurvé à l'une des extrémités de la soupape, de manière qu'il prenne une forme générale conique, de sorte que les ouvertures d'injection cylindriques prennent une position inclinée par rapport à l'axe longitudinal de la soupape. Le nouveau disque perforé d'injection (22) est réalisé également initialement, parallèlement à l'axe longitudinal (2) de la soupape, avec au moins une ouverture d'injection (27). Le disque (22) est ensuite plastiquement déformé, par emboutissage profond, dans sa partie médiane (29) présentant les ouvertures d'injection (27), de sorte que lesdites ouvertures (27) sont alors inclinées par rapport à l'axe longitudinal (2) de la soupape et sont évasées en forme de tronc de cône, dans le sens de l'écoulement. On obtient de cette façon une bonne stabilité du jet de fluide délivré par au moins une ouverture d'injection (27). Le disque perforé d'injection est utilisé notamment pour des soupapes d'injection de dispositifs d'injection de carburant de moteurs à combustion interne.
PCT/DE1993/000481 1992-06-27 1993-06-04 Disque perfore d'injection pour soupape et son procede de fabrication WO1994000686A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19924221185 DE4221185A1 (de) 1992-06-27 1992-06-27 Spritzlochscheibe für ein Ventil und Verfahren zur Herstellung
DEP4221185.9 1992-06-27

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WO1994000686A1 true WO1994000686A1 (fr) 1994-01-06

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WO (1) WO1994000686A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0675283A1 (fr) * 1994-04-02 1995-10-04 Robert Bosch Gmbh Soupape d'injection
WO1996000847A1 (fr) * 1994-06-30 1996-01-11 Siemens Automotive Corporation Element a orifices discoides minces pour injecteur de carburant
DE19527364A1 (de) * 1994-07-29 1996-02-01 Zexel Corp Brennstoff-Einspritzdüse des Kollisionstyps und Verfahren zum Herstellen der Einspritzdüse
US5787583A (en) * 1994-05-10 1998-08-04 Robert Bosch Gmbh Apparatus and method for setting a valve lift
WO2002044552A1 (fr) * 2000-11-30 2002-06-06 Robert Bosch Gmbh Soupape d'injection de carburant
DE102006062491A1 (de) 2006-12-28 2008-07-03 Robert Bosch Gmbh Vorrichtung zur Dosierung von Kraftstoff zum Abgassystem eines Verbrennungsmotors
WO2009090084A1 (fr) * 2008-01-16 2009-07-23 Boehringer Ingelheim Pharma Gmbh & Co. Kg Buse et inhalateur et procédé de production d'une buse
DE102014211494A1 (de) 2014-06-16 2015-12-17 Robert Bosch Gmbh Einspritzeinrichtung

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4307159B4 (de) * 1993-03-06 2009-03-26 Robert Bosch Gmbh Spritzlochscheibe für ein Ventil und Verfahren zur Herstellung
DE19523165B4 (de) * 1994-06-29 2005-11-17 Bosch Automotive Systems Corp. Kraftstoffeinspritzdüse
DE4445358A1 (de) 1994-12-20 1996-06-27 Bosch Gmbh Robert Ventil und Verfahren zur Herstellung eines Ventiles
DE19503269A1 (de) * 1995-02-02 1996-08-08 Bosch Gmbh Robert Brennstoffeinspritzventil für Brennkraftmaschinen
DE19631066A1 (de) * 1996-08-01 1998-02-05 Bosch Gmbh Robert Brennstoffeinspritzventil
DE19653832A1 (de) * 1996-12-21 1998-06-25 Bosch Gmbh Robert Ventil mit kombiniertem Ventilsitzkörper und Spritzlochscheibe
DE19724091A1 (de) 1997-06-07 1998-12-10 Bosch Gmbh Robert Ventil
DE19726991A1 (de) * 1997-06-25 1999-01-07 Bosch Gmbh Robert Ventil und Verfahren zur Herstellung eines Ventilsitzes für ein Ventil
DE19815789A1 (de) 1998-04-08 1999-10-14 Bosch Gmbh Robert Brennstoffeinspritzventil
DE10046304C1 (de) * 2000-09-19 2002-06-06 Bosch Gmbh Robert Verfahren zum Herstellen eines Ventilsitzkörpers eines Brennstoffeinspritzventils
DE10118164B4 (de) * 2001-04-11 2007-02-08 Robert Bosch Gmbh Brennstoffeinspritzventil
DE10314670A1 (de) * 2003-04-01 2004-10-14 Robert Bosch Gmbh Verfahren zur Herstellung und Befestigung einer Lochscheibe
DE10360773A1 (de) 2003-12-23 2005-07-28 Robert Bosch Gmbh Brennstoffeinspritzventil
DE102005017420A1 (de) 2005-04-15 2006-10-19 Robert Bosch Gmbh Brennstoffeinspritzventil
KR101019324B1 (ko) * 2007-01-29 2011-03-07 미쓰비시덴키 가부시키가이샤 연료 분사 밸브
US8317112B2 (en) 2010-01-25 2012-11-27 Continental Automotive Systems Us, Inc. High pressure fuel injector seat that resists distortion during welding
KR102604771B1 (ko) * 2021-09-08 2023-11-22 주식회사 현대케피코 편심 니들형 인젝터

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US4080700A (en) * 1976-01-05 1978-03-28 Brunswick Corporation Method of atomizing a liquid, an atomizer tip for use in the method and method of manufacturing the tip
US4166564A (en) * 1977-04-29 1979-09-04 The Bendix Corporation Method of making a multiorifice structure
WO1989005914A1 (fr) * 1987-12-23 1989-06-29 Siemens Aktiengesellschaft Disque a orifice a bord mince pour injecteurs de carburant et son procede de fabrication
GB2225809A (en) * 1988-12-07 1990-06-13 Bosch Gmbh Robert Valve nozzle construction
EP0366833B1 (fr) * 1988-11-04 1992-04-15 Siemens Aktiengesellschaft Injecteur à commande électromagnétique
WO1992022743A1 (fr) * 1991-06-17 1992-12-23 Siemens Automotive L.P. Injecteur de carburant incline comprenant un element a orifice a disque mince

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US4080700A (en) * 1976-01-05 1978-03-28 Brunswick Corporation Method of atomizing a liquid, an atomizer tip for use in the method and method of manufacturing the tip
US4166564A (en) * 1977-04-29 1979-09-04 The Bendix Corporation Method of making a multiorifice structure
WO1989005914A1 (fr) * 1987-12-23 1989-06-29 Siemens Aktiengesellschaft Disque a orifice a bord mince pour injecteurs de carburant et son procede de fabrication
EP0366833B1 (fr) * 1988-11-04 1992-04-15 Siemens Aktiengesellschaft Injecteur à commande électromagnétique
GB2225809A (en) * 1988-12-07 1990-06-13 Bosch Gmbh Robert Valve nozzle construction
WO1992022743A1 (fr) * 1991-06-17 1992-12-23 Siemens Automotive L.P. Injecteur de carburant incline comprenant un element a orifice a disque mince

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0675283A1 (fr) * 1994-04-02 1995-10-04 Robert Bosch Gmbh Soupape d'injection
US5787583A (en) * 1994-05-10 1998-08-04 Robert Bosch Gmbh Apparatus and method for setting a valve lift
WO1996000847A1 (fr) * 1994-06-30 1996-01-11 Siemens Automotive Corporation Element a orifices discoides minces pour injecteur de carburant
DE19527364A1 (de) * 1994-07-29 1996-02-01 Zexel Corp Brennstoff-Einspritzdüse des Kollisionstyps und Verfahren zum Herstellen der Einspritzdüse
WO2002044552A1 (fr) * 2000-11-30 2002-06-06 Robert Bosch Gmbh Soupape d'injection de carburant
US6764031B2 (en) 2000-11-30 2004-07-20 Robert Bosch Gmbh Fuel injection valve
DE102006062491A1 (de) 2006-12-28 2008-07-03 Robert Bosch Gmbh Vorrichtung zur Dosierung von Kraftstoff zum Abgassystem eines Verbrennungsmotors
WO2009090084A1 (fr) * 2008-01-16 2009-07-23 Boehringer Ingelheim Pharma Gmbh & Co. Kg Buse et inhalateur et procédé de production d'une buse
RU2495726C2 (ru) * 2008-01-16 2013-10-20 Берингер Ингельхайм Фарма Гмбх Унд Ко. Кг Насадка и ингалятор и способ изготовления насадки
US9259540B2 (en) 2008-01-16 2016-02-16 Boehringer Ingelheim Pharma Gmbh & Co. Kg Nozzle and inhaler and method for producing a nozzle
DE102014211494A1 (de) 2014-06-16 2015-12-17 Robert Bosch Gmbh Einspritzeinrichtung
US10190459B2 (en) 2014-06-16 2019-01-29 Robert Bosch Gmbh Injection device

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