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EP1825136B1 - Injection valve - Google Patents

Injection valve Download PDF

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Publication number
EP1825136B1
EP1825136B1 EP05801390A EP05801390A EP1825136B1 EP 1825136 B1 EP1825136 B1 EP 1825136B1 EP 05801390 A EP05801390 A EP 05801390A EP 05801390 A EP05801390 A EP 05801390A EP 1825136 B1 EP1825136 B1 EP 1825136B1
Authority
EP
European Patent Office
Prior art keywords
valve
valve seat
magnet
seat carrier
pot
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.)
Not-in-force
Application number
EP05801390A
Other languages
German (de)
French (fr)
Other versions
EP1825136A1 (en
Inventor
Juergen Lander
Dieter Maier
Franz Thoemmes
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 EP1825136A1 publication Critical patent/EP1825136A1/en
Application granted granted Critical
Publication of EP1825136B1 publication Critical patent/EP1825136B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F02M61/168—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
    • 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

Definitions

  • the invention relates to an injection valve, in particular for fuel injection systems of internal combustion engines in motor vehicles, according to the preamble of claim 1 (see, for example EP-A-0806565 ).
  • a known injection valve for fuel injection systems for internal combustion engines has a valve seat carrier, in the end a valve seat body is inserted. On the valve seat body, the valve opening and the valve opening enclosing the valve seat is formed.
  • the hollow cylindrical valve needle is open at its one end of the needle for fuel inlet and at its other end of the needle by a spherical valve closure member which is welded onto the valve needle, and is provided with radial outlet holes for the fuel.
  • the valve seat carrier is attached via an intermediate piece to the hollow cylindrical magnetic core, for example by welding.
  • the hollow cylindrical magnetic core is opposite to the formation of a working air gap of the armature, which is formed integrally with the valve needle at this.
  • the valve needle is guided via its armature axially displaceable in the intermediate piece.
  • the magnetic coil consisting of a bobbin and a wrapped in the bobbin field winding, pushed.
  • the excitation winding is connected to a connector.
  • the remote from the armature end of the magnetic core is formed as a connecting piece for the fuel introduction, in which a fuel filter is used.
  • the magnetic coil is surrounded by a trained as a bracket ferromagnetic guide element, which abuts with its one end to the magnetic core and its other end to the valve seat carrier and with this z. B. is connected by welding or soldering.
  • Magnetic core, magnetic coil with ferromagnetic guide element and valve seat carrier are enclosed by a plastic encapsulation, in which the connector is integrated.
  • the Valve needle is manufactured in so-called. MIM technology (Metal Injection Molding) by injection molding and subsequent sintering.
  • MIM technology Metal Injection Molding
  • the valve needle is sprayed from a metal powder with a binder, such as a plastic binder. By sintering the binder is removed again.
  • the sleeve or cylindrical valve needle produced in this way, in which the outlet holes have already been formed and the magnetic core formed, is connected to the spherical valve closure member by welding at the end face.
  • the injection valve according to the invention with the features of claim 1 has the advantage that the functions of the injection valve are combined on complex components, on the one hand by injection techniques, such as MIM (Metal Injection Molding), CIM (Ceramic Injection Molding) or plastic injection molding can be produced inexpensively and on the other to streamline the assembly line with increased assembly time.
  • MIM Metal Injection Molding
  • CIM Ceramic Injection Molding
  • plastic injection molding can be produced inexpensively and on the other to streamline the assembly line with increased assembly time.
  • the elaborate and costly overmoulding of the injection valve with plastic within the assembly line is bypassed.
  • By bonding the components to the joint and sealing point - instead of welding - a delay of the components is avoided and metal and plastic parts can be easily and reliably connected to each other.
  • valve noise is reduced because the valve seat carrier is a solid component and valve seat and valve needle guide are united in it.
  • the magnetic circuit can be optimized in terms of its iron volume by eliminating support function for solenoid coil and connecting piece so that induced eddy currents are reduced and switching times are shortened and thus the dynamic flow range (DFR) is improved.
  • the hollow cylindrical magnetic core is pressed into the valve seat carrier. Due to the wall thickness of the valve seat carrier is doing a pure press fit sufficient for the strength of the connection, so that the magnetic core does not need to be additionally stapled to the valve seat carrier.
  • the axial insertion depth of the magnetic core determines the maximum stroke of the valve needle.
  • injection valve is preferably used in fuel injection systems of internal combustion engines in motor vehicles. It has a valve seat carrier 11, a valve needle 12 arranged coaxially in the valve seat carrier 11, an electromagnet 13 for actuating the valve needle 12, and a connecting piece 14 for supplying fuel.
  • the valve seat carrier 11 is made of a hard magnetic material, such as KM57, or a partially curable magnetic material as a so-called. MIM part by injection molding and subsequent sintering by the metal injection molding process. Details of this process can be found in the DE 42 30 376 C1 , When the valve seat carrier 11 is produced, a valve opening 15 and a valve seat 16 enclosing it are formed or formed in its bottom area.
  • valve seat 16 is ground or honed in the final state.
  • a recess 17 is formed coaxially with the valve opening 15 on the side facing away from the valve seat 16 outside, into which a spray-orifice plate 17 is glued.
  • end of the valve seat carrier 11 is provided with an outer circumferential annular groove 18. If the valve seat carrier 11 is not made of hard, but partially curable magnetic material, this is hardened in the region of the valve seat 16.
  • valve needle 12 is open at its end facing away from the valve seat 16 end for fuel inlet and carries at its valve seat 16 facing the other end a valve closure member 19 which cooperates with the valve seat 16 for releasing and closing the valve opening 15.
  • the valve needle 12 is provided with at least one radially through the cylinder wall passing through hole 20.
  • a magnet armature 21 is arranged, via which the valve needle 12 is guided axially displaceably in the valve seat carrier 11.
  • the valve needle 12 with valve closure member 19 and armature 21 is made as a one-piece MIM part of a hard, soft magnetic material.
  • both the exit holes 20 and a flat on the valve closing member 19 aligned flat surface 22 can be prepared.
  • This flat surface 22 serves as a reflection surface for a laser beam in the dry adjustment of the valve lift.
  • the cooperating with the valve seat 16 outer contour of the valve closing member 19 is ground, with any contours, eg spherical or edge seat with damping cone, can be realized.
  • the electromagnet 13 comprises, in addition to the integrally formed with the valve needle 12 armature 21 an inner, hollow cylindrical magnetic core 23, an outer, deep-drawn magnet pot 24 and a magnetic core 23 and magnetic pot 24 inset magnetic coil 25, in a known manner from a wound on a bobbin field winding consists.
  • the magnetic coil 25 is connected to a connector 26.
  • the hollow cylindrical magnetic core 23 is pressed against the valve seat 16 remote from the end of the valve seat support 11 in this. Its offset determines the stroke of the valve needle 12. Due to the relatively large wall thickness of the valve seat carrier 11 is achieved by a pure press fit sufficient strength in the connection of the magnetic core 23 and valve seat carrier 11.
  • the magnet coil 25 and the connector 26 are combined to form a plastic-encased coil part 27, which is manufactured as a separate component outside the assembly line, delivered and pushed onto the valve seat carrier 11.
  • a plastic-coated coil part 27 of the magnet pot 24 is placed, which surrounds the valve seat carrier 11 with its cup bottom 241 and with its cup jacket 242 at the pot opening edge integrally formed on a valve seat carrier 11 radial flange 111 almost without play.
  • the radial flange 11 is arranged at the level of the magnetic core 23 on the valve needle 12.
  • the valve needle 12 is connected to its valve closing member 19 by a trained as a compression spring valve closing spring 28 on the Valve seat 16 pressed on.
  • valve closing spring 28 is supported on the one hand in a radial annular shoulder 121 formed in the interior of the valve needle 12 and on the other hand on an adjusting sleeve 29, which is pressed into the magnetic core 23.
  • the offset of the adjusting sleeve 29 determines the spring bias of the valve closing spring 28 and thus the closing force of the valve needle 12.
  • the connecting piece 14 is made as a separate plastic injection molded part with integrated filter 31. On the one hand, it has an annular web 141, which is able to produce a clip connection with the annular groove 18 on the valve seat carrier 11, and a radially projecting mounting nose 142, which serves as an anti-twist device and serves for the correct position of insertion of the injection valve into a fuel manifold.
  • the mounting nose 142 may be offset depending on the type of injection valve in the axial and radial directions on the connecting piece 14.
  • the connecting piece 14 is at the end of the assembly line directed to the spray perforated disk 17 clipped onto the valve seat carrier 11 and bonded to the valve seat carrier 11 and / or the magnet pot 24.
  • the volume of the magnetic circuit formed by the magnetic core 23, magnet pot 24, radial flange 111 and armature 21 is minimized, on the one hand the wall thicknesses of said components as low as possible and on the other hand, the magnetic circuit is rectangular.
  • valve seat carrier 11 and valve needle 12 are not made of soft magnetic material, but made of a hard material in MIM technology.
  • the valve needle 12 can also be produced by a so-called CIM process (Ceramic Injection Molding).
  • the gas tanker 21 is not integrally formed on the valve needle 12, but attached as a separate soft magnetic ring 32 by pressing, welding or positive engagement on the valve needle 12.
  • the valve seat carrier 11 is designed to be thin-walled in its area encompassed by the electromagnet 13, so that as a result of the gradation of the wall thickness, an annular shoulder 112 running around the outside of the valve seat carrier 11 results.
  • the magnetic core 23 is pressed into the thin-walled region of the valve seat carrier 11 and welded thereto.
  • the plastic-molded coil part 27 is on the magnetic core 23 and the thin-walled Area of the valve seat carrier 11 is pushed and preferably glued to both.
  • the deep-drawn magnet pot 24 is placed with its cup bottom 241 on the magnetic core 23 and connected thereto preferably by welding.
  • the annular pot opening is covered by a ring 33 of soft magnetic material, which rests against the annular shoulder 112 of the valve seat carrier 11 and is positively connected with its Innrand with the valve seat carrier 11 and with its outer edge with the pot shell 242 of the magnetic pot 24, for example by pressing or welding ,
  • valve needle can also be designed as a solid plunger welded to one end of the preferably spherical valve closure member and arranged at the other end of the armature, preferably integrally formed, which also serves for axial guidance of the valve needle in the valve seat carrier 11 ,
  • a valve needle is for example from the DE 44 15 850 A1 known.

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

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einem Einspritzventil, insbesondere für Kraftstoffeinspritzanlagen von Brennkraftmaschinen in Kraftfahrzeugen, nach dem Oberbegriff des Anspruchs 1 (siehe z.B. EP-A-0806565 ).The invention relates to an injection valve, in particular for fuel injection systems of internal combustion engines in motor vehicles, according to the preamble of claim 1 (see, for example EP-A-0806565 ).

Ein bekanntes Einspritzventil für Kraftstoffeinspritzanlagen für Brennkraftmaschinen ( DE 42 30 376 C1 ) weist einen Ventilsitzträger auf, in dem endseitig ein Ventilsitzkörper eingesetzt ist. An dem Ventilsitzkörper ist die Ventilöffnung und der die Ventilöffnung umschließende Ventilsitz ausgebildet. Die hohlzylindrische Ventilnadel ist an ihrem einen Nadelende zum Kraftstoffeintritt offen und an ihrem anderen Nadelende durch ein kugelförmiges Ventilschließglied, das auf die Ventilnadel aufgeschweißt ist, verschlossen und ist mit radialen Austrittslöchern für den Kraftstoff versehen. Der Ventilsitzträger ist über ein Zwischenstück an dem hohlzylindrischen Magnetkern, z.B. durch Schweißung, befestigt. Dem hohlzylindrischen Magnetkern liegt unter Bildung eines Arbeitsluftspalts der Magnetanker gegenüber, der einstückig mit der Ventilnadel an dieser ausgebildet ist. Die Ventilnadel ist über ihren Magnetanker axial verschieblich im Zwischenstück geführt. Auf den Magnetkern ist die Magnetspule, bestehend aus einem Spulenkörper und einer in den Spulenkörper eingewickelten Erregerwicklung, aufgeschoben. Die Erregerwicklung ist an einen Anschlussstecker angeschlossen. Das vom Magnetanker abgekehrte Ende des Magnetkerns ist als Anschlussstutzen für die Kraftstoffeinleitung ausgebildet, in dem ein Kraftstofffilter eingesetzt ist. Die Magnetspule ist von einem, als Bügel ausgebildeten ferromagnetischen Leitelement umgeben, das mit seinem einen Ende an dem Magnetkern und seinem anderen Ende an dem Ventilsitzträger anliegt und mit diesem z. B. durch Schweißen oder Löten verbunden ist. Magnetkern, Magnetspule mit ferromagnetischem Leitelement und Ventilsitzträger sind von einer Kunststoffumspritzung umschlossen, in der der Anschlussstecker integriert ist. Die Ventilnadel ist in sog. MIM-Technologie (Metal Injection Molding) durch Spritzgießen und anschließendem Sintern hergestellt. Dabei wird die Ventilnadel aus einem Metallpulver mit einem Bindemittel, z.B. einem Kunststoffbindemittel gespritzt. Durch Sintern wird das Bindemittel wieder entfernt. Die so hergestellte hülsen- oder zylinderförmige Ventilnadel, in der schon die Austrittslöcher ausgeformt und der Magnetkern angeformt sind, wird stirnseitig mit dem kugelförmigen Ventilschließglied durch Schweißen verbunden.A known injection valve for fuel injection systems for internal combustion engines ( DE 42 30 376 C1 ) has a valve seat carrier, in the end a valve seat body is inserted. On the valve seat body, the valve opening and the valve opening enclosing the valve seat is formed. The hollow cylindrical valve needle is open at its one end of the needle for fuel inlet and at its other end of the needle by a spherical valve closure member which is welded onto the valve needle, and is provided with radial outlet holes for the fuel. The valve seat carrier is attached via an intermediate piece to the hollow cylindrical magnetic core, for example by welding. The hollow cylindrical magnetic core is opposite to the formation of a working air gap of the armature, which is formed integrally with the valve needle at this. The valve needle is guided via its armature axially displaceable in the intermediate piece. On the magnetic core, the magnetic coil, consisting of a bobbin and a wrapped in the bobbin field winding, pushed. The excitation winding is connected to a connector. The remote from the armature end of the magnetic core is formed as a connecting piece for the fuel introduction, in which a fuel filter is used. The magnetic coil is surrounded by a trained as a bracket ferromagnetic guide element, which abuts with its one end to the magnetic core and its other end to the valve seat carrier and with this z. B. is connected by welding or soldering. Magnetic core, magnetic coil with ferromagnetic guide element and valve seat carrier are enclosed by a plastic encapsulation, in which the connector is integrated. The Valve needle is manufactured in so-called. MIM technology (Metal Injection Molding) by injection molding and subsequent sintering. The valve needle is sprayed from a metal powder with a binder, such as a plastic binder. By sintering the binder is removed again. The sleeve or cylindrical valve needle produced in this way, in which the outlet holes have already been formed and the magnetic core formed, is connected to the spherical valve closure member by welding at the end face.

Vorteile der ErfindungAdvantages of the invention

Das erfindungsgemäße Einspritzventil mit den Merkmalen des Anspruchs 1 hat den Vorteil, dass die Funktionen des Einspritzventils auf komplexe Bauteile vereinigt sind, die einerseits durch Spritztechniken, wie MIM (Metal Injection Molding), CIM (Ceramic Injection Molding) oder Kunststoffspritzgießen kostengünstig herstellbar sind und andererseits eine Straffung der Montagelinie mit Montagezeitgewinn ermöglichen. Die aufwändige und kostspielige Umspritzung des Einspritzventils mit Kunststoff innerhalb der Montagelinie wird umgangen. Durch das Verkleben der Bauteile an den Füge- und Dichtstelle - anstelle von Schweißen - wird ein Verzug der Bauteile vermieden und können Metall- und Kunststoffteile problemlos und zuverlässig miteinander verbunden werden.The injection valve according to the invention with the features of claim 1 has the advantage that the functions of the injection valve are combined on complex components, on the one hand by injection techniques, such as MIM (Metal Injection Molding), CIM (Ceramic Injection Molding) or plastic injection molding can be produced inexpensively and on the other to streamline the assembly line with increased assembly time. The elaborate and costly overmoulding of the injection valve with plastic within the assembly line is bypassed. By bonding the components to the joint and sealing point - instead of welding - a delay of the components is avoided and metal and plastic parts can be easily and reliably connected to each other.

Darüber hinaus lassen sich durch die erfindungsgemäße Modulbauweise auch für den Kunden wesentliche technische Eigenschaften des Einspritzventils verbessern. So wird das Ventilgeräusch reduziert, da der Ventilsitzträger ein massives Bauteil ist und Ventilsitz und Ventilnadelführung in ihm vereinigt sind. Der Magnetkreis lässt sich durch Wegfall von Tragfunktion für Magnetspule und Anschlussstutzen bezüglich seines Eisenvolumens so optimieren, dass induzierte Wirbelströme reduziert und Schaltzeiten verkürzt werden und damit der Dynamic Flow Range (DFR) verbessert wird.In addition, can be improved by the inventive modular design for the customer essential technical characteristics of the injector. Thus, the valve noise is reduced because the valve seat carrier is a solid component and valve seat and valve needle guide are united in it. The magnetic circuit can be optimized in terms of its iron volume by eliminating support function for solenoid coil and connecting piece so that induced eddy currents are reduced and switching times are shortened and thus the dynamic flow range (DFR) is improved.

Durch die in den weiteren Ansprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Anspruch 1 angegebenen Einspritzventils möglich.The measures listed in the further claims advantageous refinements and improvements of the claim 1 injection valve are possible.

Gemäß einer vorteilhaften Ausführungsform der Erfindung ist der hohlzylindrische Magnetkern in den Ventilsitzträger eingepresst. Aufgrund der Wandstärke des Ventilsitzträgers ist dabei eine reine Presspassung ausreichend für die Festigkeit der Verbindung, so dass der Magnetkern nicht noch zusätzlich am Ventilsitzträger festgeheftet werden muss. Die axiale Einsetztiefe des Magnetkerns legt den maximalen Hub der Ventilnadel fest.According to an advantageous embodiment of the invention, the hollow cylindrical magnetic core is pressed into the valve seat carrier. Due to the wall thickness of the valve seat carrier is doing a pure press fit sufficient for the strength of the connection, so that the magnetic core does not need to be additionally stapled to the valve seat carrier. The axial insertion depth of the magnetic core determines the maximum stroke of the valve needle.

Zeichnungdrawing

Die Erfindung ist anhand von in der Zeichnung dargestellten Ausführungsbeispielen in der nachfolgenden Beschreibung näher erläutert. Es zeigen:

Fig. 1
einen Längsschnitt eines Einspritzventils,
Fig. 2
einen Längsschnitt eines Einspritzventils gemäß einem weiteren Ausführungsbeispiel in einer Halbschnittdarstellung.
The invention is explained in more detail with reference to embodiments illustrated in the drawings in the following description. Show it:
Fig. 1
a longitudinal section of an injection valve,
Fig. 2
a longitudinal section of an injection valve according to another embodiment in a half-sectional view.

Beschreibung der AusführungsbeispieleDescription of the embodiments

Das in Fig. 1 im Längsschnitt schematisiert dargestellte Einspritzventil wird vorzugsweise in Kraftstoffeinspritzanlagen von Brennkraftmaschinen in Kraftfahrzeugen eingesetzt. Es weist einen Ventilsitzträger 11, eine im Ventilsitzträger 11 koaxial angeordnete Ventilnadel 12, einen Elektromagneten 13 zum Betätigen der Ventilnadel 12, sowie einen Anschlussstutzen 14 zum Zuführen von Kraftstoff auf. Der Ventilsitzträger 11 ist aus einem harten Magnetmaterial, z.B. KM57, oder einem partiell härtbaren Magnetmaterial als sog. MIM-Teil durch Spritzgießen und anschließendes Sintern nach dem Metal-Injection-Molding-Verfahren hergestellt. Einzelheiten dieses Verfahrens finden sich in der DE 42 30 376 C1 . Beim Herstellen des Ventilsitzträgers 11 wird in dessen Bodenbereich eine Ventilöffnung 15 und ein diese umschließender Ventilsitz 16 aus- bzw. angeformt. Der Ventilsitz 16 wird im endgültigen Zustand geschliffen bzw. gehont. Im Boden des Ventilsitzträgers 11 ist auf der vom Ventilsitz 16 abgekehrten Außenseite eine Ausnehmung 17 koaxial zur Ventilöffnung 15 eingeformt, in die eine Spritzlochscheibe 17 eingeklebt ist. An seinem vom Ventilsitz 16 abgekehrten Ende ist der Ventilsitzträger 11 mit einer außen umlaufenden Ringnut 18 versehen. Ist der Ventilsitzträger 11 nicht aus hartem, sondern partiell härtbarem Magnetmaterial hergestellt, so wird dieses im Bereich des Ventilsitzes 16 gehärtet.This in Fig. 1 In longitudinal section schematically illustrated injection valve is preferably used in fuel injection systems of internal combustion engines in motor vehicles. It has a valve seat carrier 11, a valve needle 12 arranged coaxially in the valve seat carrier 11, an electromagnet 13 for actuating the valve needle 12, and a connecting piece 14 for supplying fuel. The valve seat carrier 11 is made of a hard magnetic material, such as KM57, or a partially curable magnetic material as a so-called. MIM part by injection molding and subsequent sintering by the metal injection molding process. Details of this process can be found in the DE 42 30 376 C1 , When the valve seat carrier 11 is produced, a valve opening 15 and a valve seat 16 enclosing it are formed or formed in its bottom area. The valve seat 16 is ground or honed in the final state. In the bottom of the valve seat carrier 11, a recess 17 is formed coaxially with the valve opening 15 on the side facing away from the valve seat 16 outside, into which a spray-orifice plate 17 is glued. At its end remote from the valve seat 16 end of the valve seat carrier 11 is provided with an outer circumferential annular groove 18. If the valve seat carrier 11 is not made of hard, but partially curable magnetic material, this is hardened in the region of the valve seat 16.

Die im Ausführungsbeispiel der Fig. 1 hohlzylindrische Ventilnadel 12 ist an ihrem vom Ventilsitz 16 abgekehrten Ende zum Kraftstoffeintritt offen und trägt an ihrem dem Ventilsitz 16 zugekehrten anderen Ende ein Ventilschließglied 19, das mit dem Ventilsitz 16 zum Freigeben und Schließen der Ventilöffnung 15 zusammenwirkt. Zum Kraflstoffaustritt ist die Ventilnadel 12 mit mindestens einem radial durch die Zylinderwand hindurchgehenden Austrittsloch 20 versehen. An dem vom Ventilschließglied 19 abgekehrten Ende der Ventilnadel 12 ist ein Magnetanker 21 angeordnet, über den die Ventilnadel 12 in dem Ventilsitzträger 11 axial verschieblich geführt ist. Die Ventilnadel 12 mit Ventilschließglied 19 und Magnetanker 21 ist als einstückiges MIM-Teil aus einem harten, weichmagnetischen Material hergestellt. Durch die MIM-Technologie können sowohl die Austrittslöcher 20 als auch eine innen am Ventilschließglied 19 ausgerichtete ebene Fläche 22 hergestellt werden. Diese ebene Fläche 22 dient als Reflexionsfläche für einen Laserstrahl bei der Trockeneinstellung des Ventilhubs. Die mit dem Ventilsitz 16 zusammenwirkende Außenkontur des Ventilschließglieds 19 wird angeschliffen, wobei beliebige Konturen, z.B. Kugelform oder Kantensitz mit Dämpfungskegel, realisiert werden können.In the embodiment of the Fig. 1 hollow cylindrical valve needle 12 is open at its end facing away from the valve seat 16 end for fuel inlet and carries at its valve seat 16 facing the other end a valve closure member 19 which cooperates with the valve seat 16 for releasing and closing the valve opening 15. For Kraflstoffaustritt the valve needle 12 is provided with at least one radially through the cylinder wall passing through hole 20. At the end remote from the valve closing member 19 end of the valve needle 12, a magnet armature 21 is arranged, via which the valve needle 12 is guided axially displaceably in the valve seat carrier 11. The valve needle 12 with valve closure member 19 and armature 21 is made as a one-piece MIM part of a hard, soft magnetic material. Through the MIM technology, both the exit holes 20 and a flat on the valve closing member 19 aligned flat surface 22 can be prepared. This flat surface 22 serves as a reflection surface for a laser beam in the dry adjustment of the valve lift. The cooperating with the valve seat 16 outer contour of the valve closing member 19 is ground, with any contours, eg spherical or edge seat with damping cone, can be realized.

Der Elektromagnet 13 umfasst neben dem mit der Ventilnadel 12 einstückig ausgebildeten Magnetanker 21 einen innenliegenden, hohlzylindrischen Magnetkern 23, einen außenliegenden, tiefgezogenen Magnettopf 24 und eine zwischen Magnetkern 23 und Magnettopf 24 einliegende Magnetspule 25, die in bekannter Weise aus einer auf einen Spulenkörper aufgewickelten Erregerwicklung besteht. Die Magnetspule 25 ist an einem Anschlussstecker 26 angeschlossen. Der hohlzylindrische Magnetkern 23 ist an dem vom Ventilsitz 16 abgekehrten Ende des Ventilsitzträgers 11 in diesen eingepresst. Seine Einpresstiefe bestimmt den Hub der Ventilnadel 12. Aufgrund der relativ großen Wandstärke des Ventilsitzträgers 11 wird durch eine reine Presspassung eine ausreichende Festigkeit in der Verbindung von Magnetkern 23 und Ventilsitzträger 11 erreicht. Die Magnetspule 25 und der Anschlussstecker 26 sind zu einem kunststoffumspritzten Spulenteil 27 zusammengefasst, das als separates Bauteil außerhalb der Montagelinie hergestellt, angeliefert und auf den Ventilsitzträger 11 aufgeschoben wird. Auf das kunststoffumspritzte Spulenteil 27 wird der Magnettopf 24 aufgesetzt, der mit seinem Topfboden 241 den Ventilsitzträger 11 umschließt und mit seinem Topfmantel 242 am Topföffnungsrand einen am Ventilsitzträger 11 angeformten Radialflansch 111 nahezu spiellos übergreift. Der Radialflansch 11 ist in Höhe des Magnetkerns 23 an der Ventilnadel 12 angeordnet. Die Ventilnadel 12 wird mit ihrem Ventilschließglied 19 durch eine als Druckfeder ausgebildete Ventilschließfeder 28 auf den Ventilsitz 16 aufgepresst. Hierzu stützt sich die Ventilschließfeder 28 einerseits in einer im Innern der Ventilnadel 12 ausgebildeten, radialen Ringschulter 121 und andererseits an einer Einstellhülse 29 ab, die in den Magnetkern 23 eingepresst ist. Die Einpresstiefe der Einstellhülse 29 bestimmt die Federvorspannung der Ventilschließfeder 28 und damit die Schließkraft der Ventilnadel 12. Bei geschlossenem Ventil ist zwischen den ringförmigen Stirnflächen von Magnetanker 21 und Magnetkern 23 ein Arbeitsluftspalt 30 vorhanden.The electromagnet 13 comprises, in addition to the integrally formed with the valve needle 12 armature 21 an inner, hollow cylindrical magnetic core 23, an outer, deep-drawn magnet pot 24 and a magnetic core 23 and magnetic pot 24 inset magnetic coil 25, in a known manner from a wound on a bobbin field winding consists. The magnetic coil 25 is connected to a connector 26. The hollow cylindrical magnetic core 23 is pressed against the valve seat 16 remote from the end of the valve seat support 11 in this. Its offset determines the stroke of the valve needle 12. Due to the relatively large wall thickness of the valve seat carrier 11 is achieved by a pure press fit sufficient strength in the connection of the magnetic core 23 and valve seat carrier 11. The magnet coil 25 and the connector 26 are combined to form a plastic-encased coil part 27, which is manufactured as a separate component outside the assembly line, delivered and pushed onto the valve seat carrier 11. On the plastic-coated coil part 27 of the magnet pot 24 is placed, which surrounds the valve seat carrier 11 with its cup bottom 241 and with its cup jacket 242 at the pot opening edge integrally formed on a valve seat carrier 11 radial flange 111 almost without play. The radial flange 11 is arranged at the level of the magnetic core 23 on the valve needle 12. The valve needle 12 is connected to its valve closing member 19 by a trained as a compression spring valve closing spring 28 on the Valve seat 16 pressed on. For this purpose, the valve closing spring 28 is supported on the one hand in a radial annular shoulder 121 formed in the interior of the valve needle 12 and on the other hand on an adjusting sleeve 29, which is pressed into the magnetic core 23. The offset of the adjusting sleeve 29 determines the spring bias of the valve closing spring 28 and thus the closing force of the valve needle 12. When the valve is closed between the annular end faces of armature 21 and magnetic core 23, a working air gap 30 is present.

Der Anschlussstutzen 14 ist als separates Kunststoffspritzgussteil mit integriertem Filter 31 hergestellt. Er weist einerseits einen Ringsteg 141, der mit der Ringnut 18 am Ventilsitzträger 11 eine Klipsverbindung herzustellen vermag, und eine radial abstehende Montagenase 142 auf, die als Verdrehsicherung dient und zum lagerichtigen Einsetzen des Einspritzventils in eine Kraftstoffsammelleitung dient. Die Montagenase 142 kann dabei je nach Bautyp des Einspritzventils in Axial- und Radialrichtung am Anschlussstutzen 14 versetzt sein. Der Anschlussstutzen 14 wird am Ende der Montagelinie gerichtet zur Spritzlochscheibe 17 auf den Ventilsitzträger 11 aufgeklipst und mit dem Ventilsitzträger 11 und/oder dem Magnettopf 24 verklebt.The connecting piece 14 is made as a separate plastic injection molded part with integrated filter 31. On the one hand, it has an annular web 141, which is able to produce a clip connection with the annular groove 18 on the valve seat carrier 11, and a radially projecting mounting nose 142, which serves as an anti-twist device and serves for the correct position of insertion of the injection valve into a fuel manifold. The mounting nose 142 may be offset depending on the type of injection valve in the axial and radial directions on the connecting piece 14. The connecting piece 14 is at the end of the assembly line directed to the spray perforated disk 17 clipped onto the valve seat carrier 11 and bonded to the valve seat carrier 11 and / or the magnet pot 24.

Das Volumen des von Magnetkern 23, Magnettopf 24, Radialflansch 111 und Magnetanker 21 gebildeten Magnetkreises ist minimiert, wozu einerseits die Wandstärken der genannten Bauteile möglichst gering ausgeführt und andererseits der Magnetkreis rechteckig ausgebildet ist.The volume of the magnetic circuit formed by the magnetic core 23, magnet pot 24, radial flange 111 and armature 21 is minimized, on the one hand the wall thicknesses of said components as low as possible and on the other hand, the magnetic circuit is rectangular.

Das in Fig. 2 schematisiert im Halbschnitt dargestellte Einspritzventil ist gegenüber dem zuvor beschriebenen Einspritzventil bezüglich des Ventilsitzträgers 11 und der Ventilnadel 12 modifiziert. Ventilsitzträger 11 und Ventilnadel 12 sind nicht aus weichmagnetischem Material, sondern aus einem harten Material in MIM-Technologie hergestellt. Die Ventilnadel 12 kann aber auch nach einem sog. CIM-Verfahren (Ceramic-Injection-Molding) hergestellt werden. Der Magentanker 21 ist hier nicht einstückig an die Ventilnadel 12 angeformt, sondern als separater weichmagnetischer Ring 32 durch Pressen, Schweißen oder Formschluss auf der Ventilnadel 12 befestigt. Der Ventilsitzträger 11 ist in seinem von dem Elektromagneten 13 umfassten Bereich dünnwandig ausgebildet, so dass sich infolge der Abstufung der Wanddicke eine außen am Ventilsitzträger 11 umlaufende Ringschulter 112 ergibt. Der Magnetkern 23 ist in den dünnwandigen Bereich des Ventilsitzträgers 11 eingepresst und mit diesem verschweißt. Das kunststoffumspritzte Spulenteil 27 ist auf den Magnetkern 23 und den dünnwandigen Bereich des Ventilsitzträgers 11 aufgeschoben und vorzugsweise mit beiden verklebt. Der tiefgezogene Magnettopf 24 ist mit seinem Topfboden 241 auf den Magnetkern 23 aufgesetzt und mit diesem vorzugsweise durch Schweißen verbunden. Die ringförmige Topföffnung ist von einem Ring 33 aus weichmagnetischem Material abgedeckt, der an der Ringschulter 112 des Ventilsitzträgers 11 anliegt und mit seinem Innrand mit dem Ventilsitzträger 11 und mit seinem Außenrand mit dem Topfmantel 242 des Magnettopfes 24 formschlüssig verbunden ist, z.B. durch Pressung oder Schweißung.This in Fig. 2 schematically illustrated in half section injection valve is compared with the injection valve described above with respect to the valve seat carrier 11 and the valve needle 12 modified. Valve seat carrier 11 and valve needle 12 are not made of soft magnetic material, but made of a hard material in MIM technology. However, the valve needle 12 can also be produced by a so-called CIM process (Ceramic Injection Molding). The gas tanker 21 is not integrally formed on the valve needle 12, but attached as a separate soft magnetic ring 32 by pressing, welding or positive engagement on the valve needle 12. The valve seat carrier 11 is designed to be thin-walled in its area encompassed by the electromagnet 13, so that as a result of the gradation of the wall thickness, an annular shoulder 112 running around the outside of the valve seat carrier 11 results. The magnetic core 23 is pressed into the thin-walled region of the valve seat carrier 11 and welded thereto. The plastic-molded coil part 27 is on the magnetic core 23 and the thin-walled Area of the valve seat carrier 11 is pushed and preferably glued to both. The deep-drawn magnet pot 24 is placed with its cup bottom 241 on the magnetic core 23 and connected thereto preferably by welding. The annular pot opening is covered by a ring 33 of soft magnetic material, which rests against the annular shoulder 112 of the valve seat carrier 11 and is positively connected with its Innrand with the valve seat carrier 11 and with its outer edge with the pot shell 242 of the magnetic pot 24, for example by pressing or welding ,

In einer hier nicht dargestellten alternativen Ausführungsform kann die Ventilnadel auch als massiver Stößel ausgeführt werden, an dessen einem Ende das vorzugsweise kugelförmige Ventilschließglied angeschweißt und an dessen anderem Ende der Magnetanker angeordnet, vorzugsweise einstückig angeformt ist, der gleichzeitig zur Axialführung der Ventilnadel im Ventilsitzträger 11 dient. Eine solche Ventilnadel ist beispielsweise aus der DE 44 15 850 A1 bekannt.In an alternative embodiment not shown here, the valve needle can also be designed as a solid plunger welded to one end of the preferably spherical valve closure member and arranged at the other end of the armature, preferably integrally formed, which also serves for axial guidance of the valve needle in the valve seat carrier 11 , Such a valve needle is for example from the DE 44 15 850 A1 known.

Claims (15)

  1. Injection valve, in particular for fuel injection systems of internal combustion engines in motor vehicles, having a valve seat carrier (11), having a valve seat (16) which is situated at the end of the valve seat carrier (11) and which surrounds a valve opening (15), having a valve needle (12) which is arranged coaxially, and is guided in an axially movable manner, in the valve seat carrier (11), which valve needle (12), at its needle end pointing towards the valve seat (16), carries a valve closing element (19) which interacts with the valve seat (16) in order to close and open the valve opening (15), having an electromagnet (13) for the stroke actuation of the valve needle (12), which electromagnet (13) has an inner hollow cylindrical magnet core (23), an outer magnet pot (24), an interposed magnet coil (25) which is connected to a connecting plug (26), and a magnet armature (21) which is situated axially opposite the magnet core (23), which magnet armature (21) is arranged at that needle end of the valve needle (12) which faces away from the valve closing element (19), and having a connecting pipe (14) with a filter (31) for conducting in the fuel, characterized in that the valve opening (15) and valve seat (16) are formed on the unipartite valve seat carrier (11) itself, in that the axially movable guide of the valve needle (12) faces towards the valve seat carrier (11), in that the magnet coil (25) and the connecting plug (26) are combined in one plastic-encapsulated, separate coil part (27) which is placed onto the valve seat carrier (11), in that the magnet pot (24) is placed onto the coil part (27) in such a way that the magnetic circuit is closed by means of the magnet core (23), magnet pot (24), valve seat carrier (11) and magnet armature (21), in that the connecting pipe (14) is formed as a separate plastic moulded part in which the filter (31) is integrated, and in that joining and sealing points between the connecting pipe (14) on the one hand and the coil part (27), magnet pot (24) and/or valve seat carrier (11) on the other hand are adhesively bonded.
  2. Injection valve according to Claim 1, characterized in that the hollow cylindrical magnet core (23) is pressed into the valve seat carrier (11).
  3. Injection valve according to Claim 1 or 2, characterized in that the valve seat carrier (11) with the valve opening (15) and valve seat (16) is produced as an MIM part and the valve seat (16) is ground or honed.
  4. Injection valve according to one of Claims 1-3, characterized in that the valve needle (12) with the valve closing head (19) is produced as a unipartite MIM or CIM part and the outer contour, which interacts with the valve seat (16), of the valve closing head (19) is ground.
  5. Injection valve according to Claim 4, characterized in that the valve needle (12) is of hollow cylindrical design with an open end for the fuel inlet and with radial outlet holes (20) for the fuel outlet.
  6. Injection valve according to one of Claims 1 - 5, characterized in that a radially projecting assembly lug (142) which serves as an anti-twist mechanism and for the correct positioning of the injection valve in a fuel collecting rail is integrally moulded on the connecting pipe (14).
  7. Injection valve according to one of Claims 1-6, characterized in that a spray hole disc (17) which overlaps the valve opening (15) downstream of the fuel flow is adhesively bonded in the valve seat carrier (11).
  8. Injection valve according to one of Claims 1-7, characterized in that the volume of the magnetic circuit formed by the magnet core (23), magnet pot (24), valve seat carrier (11) and magnet armature (21) is minimized and the magnetic circuit is preferably of rectangular design.
  9. Injection valve according to one of Claims 4-8, characterized in that the valve seat carrier (11) is composed of a soft magnetic material, which is hard or hardenable in the valve seat region, and the valve needle (12) is composed of soft magnetic material, which is hard or hardenable in regions, and in that the magnet armature (21) is integrally formed in a unipartite fashion on the valve needle (12).
  10. Injection valve according to Claim 9, characterized in that the preferably deep-drawn magnet pot (24) is pushed with its pot base (241) onto the valve seat carrier (11) and, at its pot opening, engages with its pot casing (242) preferably without play over a radial flange (111) which is integrally formed in a unipartite fashion on the valve seat carrier (11) at the level of the magnet armature (21).
  11. Injection valve according to Claim 9 or 10, characterized in that the valve seat carrier (11) has, on its end section facing away from the valve seat (16), an annular groove (18) into which the connecting pipe (14) can be clipped with an annular web (141) in order to produce a clipped connection.
  12. Injection valve according to one of Claims 4-8, characterized in that the valve seat carrier (11) and valve needle (12) are composed of hard material and the magnet armature (21), as a ring (32) composed of soft magnetic material, is fastened to the valve needle (12) by means of pressing, welding or a form-fitting connection.
  13. Injection valve according to Claim 12, characterized in that the preferably deep-drawn magnet pot (24) is pushed with its pot base (241) onto the magnet core (23), and in that the annular pot opening of the magnet pot (24) is covered by a ring (33) which is composed of soft magnetic material and which is connected in a form-fitting manner at the outside to the pot casing (242) of the magnet pot (24) and at the inside to the valve seat carrier (11) at the level of the magnet armature (21).
  14. Injection valve according to Claim 13, characterized in that the valve seat carrier (11) is of thin-walled design in its region surrounded by the electromagnet (13), in that the soft magnetic ring (32) bears axially against an annular shoulder (112) generated by the stepping of the wall thickness of the valve seat carrier (11), and in that the magnet core (23) which is pressed into the thin-walled region of the valve seat carrier (11) is welded to the valve seat carrier (11).
  15. Injection valve according to one of Claims 12-14, characterized in that the connecting pipe (14) is placed onto the magnet core (23) so as to engage over the latter at the edge side, and is adhesively bonded to the magnet core (23) and/or to the magnet pot (24).
EP05801390A 2004-12-07 2005-10-05 Injection valve Not-in-force EP1825136B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004058803A DE102004058803A1 (en) 2004-12-07 2004-12-07 Injector
PCT/EP2005/055005 WO2006061268A1 (en) 2004-12-07 2005-10-05 Injection valve

Publications (2)

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EP1825136A1 EP1825136A1 (en) 2007-08-29
EP1825136B1 true EP1825136B1 (en) 2008-07-23

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Family Applications (1)

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EP05801390A Not-in-force EP1825136B1 (en) 2004-12-07 2005-10-05 Injection valve

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US (1) US7963465B2 (en)
EP (1) EP1825136B1 (en)
JP (1) JP4571984B2 (en)
CN (1) CN101072942B (en)
DE (2) DE102004058803A1 (en)
WO (1) WO2006061268A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2612870C2 (en) * 2012-08-09 2017-03-13 Форд Глобал Технолоджис, ЛЛК Engine fuel nozzle and method of engine operation with fuel nozzle (versions)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007050817A1 (en) * 2007-10-24 2009-04-30 Robert Bosch Gmbh Electromagnetically actuated valve
JP2009127445A (en) * 2007-11-20 2009-06-11 Denso Corp Fuel injection valve
EP2177747A1 (en) * 2008-10-15 2010-04-21 Continental Automotive GmbH Injection valve and method for its manufacturing
AT508049B1 (en) * 2009-03-17 2016-01-15 Bosch Gmbh Robert DEVICE FOR INJECTING FUEL IN THE COMBUSTION ENGINE OF AN INTERNAL COMBUSTION ENGINE
DE102009046466A1 (en) 2009-11-06 2011-05-12 Robert Bosch Gmbh MIM 2K sleeve for injector
DE102009054680A1 (en) 2009-12-15 2011-06-16 Robert Bosch Gmbh Injection valve, particularly for fuel injection system of internal combustion engine in motor vehicles, has valve opening, coaxially arranged and axially movably guided valve needle and electromagnet for lifting actuation of valve needle
DE102009055087A1 (en) * 2009-12-21 2011-06-22 Robert Bosch GmbH, 70469 Injector
DE102009055133A1 (en) 2009-12-22 2011-06-30 Robert Bosch GmbH, 70469 Pole core for solenoid valves manufactured by means of multi-material MIM
DE102009055156A1 (en) 2009-12-22 2011-06-30 Robert Bosch GmbH, 70469 Magnetic valve i.e. injection valve, for fuel injection system of internal-combustion engine in motor vehicle, has armature including area that is made of non conductive material such that material possesses small electrical conductivity
DE102010030343A1 (en) * 2010-06-22 2011-12-22 Robert Bosch Gmbh Device and method for dosing a liquid in the exhaust line of an internal combustion engine
DE102010038437B4 (en) * 2010-07-27 2022-08-25 Robert Bosch Gmbh Magnetic actuator and method for producing a one-piece pole core for a magnetic actuator
US20130081376A1 (en) * 2011-10-03 2013-04-04 Paul Reynolds Pulse Detonation Engine with Variable Control Piezoelectric Fuel Injector
MX2014006531A (en) * 2011-12-15 2014-07-14 Graco Minnesota Inc Internal valve tip filter.
CN102877997B (en) * 2012-08-23 2014-08-27 浙江福仕德燃油喷射系统有限公司 Oil sprayer with filter structure
CN103670853A (en) * 2013-09-11 2014-03-26 浙江冯仕特电喷技术有限公司 Electromagnetic oil sprayer
CN104454273A (en) * 2014-11-15 2015-03-25 柳州市莫尔斯汽配制造有限公司 Oil sprayer
CN104533679B (en) * 2014-12-30 2016-09-07 南岳电控（衡阳）工业技术股份有限公司 A kind of injector control valve and use the high pressure common rail fuel injection system of this injector control valve
DE102015221620A1 (en) * 2015-11-04 2017-05-04 Robert Bosch Gmbh Injector assembly for metering a fluid into an exhaust line
DE102015226452A1 (en) * 2015-12-22 2017-06-22 Robert Bosch Gmbh Valve for metering a fluid
JP6782668B2 (en) * 2017-06-16 2020-11-11 日立オートモティブシステムズ株式会社 Fuel injection valve
CN108561251B (en) * 2018-03-07 2020-09-08 宁波赛驰动力技术有限公司 Method for assembling oil injector

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55161957A (en) * 1979-06-05 1980-12-16 Nippon Denso Co Ltd Solenoid type fuel injection valve
IT1256933B (en) * 1992-08-07 1995-12-27 Weber Srl ELECTROMAGNETICALLY OPERATED FUEL DOSING AND PULVERIZING VALVE.
DE4230376C1 (en) 1992-09-11 1993-04-22 Robert Bosch Gmbh, 7000 Stuttgart, De
DE4415850A1 (en) 1994-05-05 1995-11-09 Bosch Gmbh Robert Valve needle for an electromagnetically actuated valve
DE4426006A1 (en) 1994-07-22 1996-01-25 Bosch Gmbh Robert Valve needle for an electromagnetically actuated valve and method of manufacture
JP2979467B2 (en) * 1996-05-10 1999-11-15 株式会社ケーヒン Electromagnetic fuel injection valve
US5775600A (en) * 1996-07-31 1998-07-07 Wildeson; Ray Method and fuel injector enabling precision setting of valve lift
FR2782751B1 (en) * 1998-08-28 2002-05-31 Sagem FLUID FUEL INJECTOR FOR AN INTERNAL COMBUSTION ENGINE
US6409102B1 (en) * 1999-03-15 2002-06-25 Aerosance, Inc. Fuel injector assembly
JP3734702B2 (en) * 2000-10-17 2006-01-11 株式会社日立製作所 Electromagnetic fuel injection valve
US6523761B2 (en) * 2000-12-29 2003-02-25 Siemens Automotive Corporation Modular fuel injector having an integral or interchangeable inlet tube and having a lift set sleeve
JP2003314401A (en) 2002-04-23 2003-11-06 Hitachi Unisia Automotive Ltd Fuel injection valve
JP3901659B2 (en) * 2003-03-31 2007-04-04 株式会社ケーヒン Electromagnetic fuel injection valve
JP3954982B2 (en) 2003-04-03 2007-08-08 株式会社ケーヒン Electromagnetic fuel injection valve
JP4120632B2 (en) * 2004-01-22 2008-07-16 株式会社デンソー Fuel injection valve
DE102005061408A1 (en) * 2005-12-22 2007-06-28 Robert Bosch Gmbh Combined plastic and metal component e.g. automotive fuel injection valve has serrated metal edge to plastic interface

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2612870C2 (en) * 2012-08-09 2017-03-13 Форд Глобал Технолоджис, ЛЛК Engine fuel nozzle and method of engine operation with fuel nozzle (versions)

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DE102004058803A1 (en) 2006-06-08
JP4571984B2 (en) 2010-10-27
CN101072942A (en) 2007-11-14
JP2008523287A (en) 2008-07-03
EP1825136A1 (en) 2007-08-29
CN101072942B (en) 2010-06-16
US7963465B2 (en) 2011-06-21
US20080265065A1 (en) 2008-10-30
DE502005004843D1 (en) 2008-09-04
WO2006061268A1 (en) 2006-06-15

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