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EP0184125A1 - Electromagnetically actuated fuel injector - Google Patents

Electromagnetically actuated fuel injector Download PDF

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Publication number
EP0184125A1
EP0184125A1 EP85115032A EP85115032A EP0184125A1 EP 0184125 A1 EP0184125 A1 EP 0184125A1 EP 85115032 A EP85115032 A EP 85115032A EP 85115032 A EP85115032 A EP 85115032A EP 0184125 A1 EP0184125 A1 EP 0184125A1
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EP
European Patent Office
Prior art keywords
closure plate
valve closure
outlet
valve
fuel injection
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.)
Withdrawn
Application number
EP85115032A
Other languages
German (de)
French (fr)
Inventor
Martin Horn
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.)
Mannesmann VDO AG
Original Assignee
Mannesmann VDO AG
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 Mannesmann VDO AG filed Critical Mannesmann VDO AG
Publication of EP0184125A1 publication Critical patent/EP0184125A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • 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
    • F02M51/0635—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding
    • F02M51/0639—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature acting as a valve
    • 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
    • F02M51/08—Injectors peculiar thereto with means directly operating the valve needle specially for low-pressure fuel-injection

Definitions

  • the invention relates to an electromagnetically actuated fuel injection valve for injection systems of internal combustion engines, with a valve housing, a soft iron core arranged within the valve housing and carrying a fixed lifting magnet winding, and a valve closure plate which forms an armature and which forms an armature and forms an armature an annular seat enclosing an outlet can be acted upon and is guided axially movably with its radially circumferential edge on a guide correspondingly enclosing it.
  • valve closure plate lies on the ring seat when closed. Since this ring seat is designed to protrude, non-centric application of the valve closure plate by the compression spring can cause the valve closure plate to tilt when it is lifted off the ring seat to open the valve.
  • the object of the invention is therefore to provide a fuel injection valve according to the preamble, which ensures a largely uniform fuel flow to the outlet.
  • valve closure plate with the radially outer region of its outlet-side surface can be supported on a bearing ring concentrically surrounding the ring seat with a radial distance, which is arranged at approximately the same distance from the valve closure plate as the ring seat. Due to the contact ring, the valve closure plate can no longer on one edge of the ring seat during the opening or closing process but only on one edge of the essential Tilt the contact ring further radially outwards. As a result, there is always a simultaneous opening or closing process on the entire circumference of the ring seat and thus a largely uniform fuel inflow to the outlet.
  • the valve plate can have a plurality of axially continuous through bores which are uniformly distributed on the surface of the valve closure plate and which open into the area between the ring seat and the bearing ring.
  • valve plate Jamming and canting of the valve plate guided axially on the guide is prevented in that the valve plate has a spherical cross-section at its radially circumferential edge.
  • valve closure plate can be supported with its surface facing away from the outlet on a support surface provided with a plastic covering.
  • the valve plate can have a coaxially protruding pin which projects through or into the outlet, the fuel inflow to the outlet being particularly uniform in that the pin has a fillet-shaped transition to the outlet-side surface of the valve closure plate. If the transition in the outlet-side surface of the valve closure plate forms a depression, this influx is influenced particularly favorably.
  • the fuel injection valves shown have a valve housing 1 in which a winding body 2 with the magnetic winding 3 is arranged.
  • a soft iron core 4 provided with a through hole 5 extends through the winding body 2 and forms an inlet connection 6 with its one end protruding from the valve housing.
  • the other end face of the soft iron core 4 is opposed by an air gap forming an anchor-forming valve closure plate 7 which has a sealing surface 8 on its side opposite the soft iron core 4.
  • valve closure plate 7 By acting on a compression spring 9 supported on the soft iron core 4, the valve closure plate 7 is urged to bear against an annular seat 10 projecting axially to the valve closure plate 7 and enclosing an outlet 11.
  • the ring seat 10 is from a system which also projects axially from the valve closure plate 7 enclosed ring 12, which has a slightly larger distance to the valve closure plate 7 than the ring seat 10th
  • the fuel passes through radial through grooves 13 on the end face of the soft iron core 4 and axial through bore 14 in the valve closure plate 7 into the annular gap which is formed between the annular seat 10 and the contact ring 12.
  • the valve closure plate 7 is lifted from the ring seat 10 against the force of the compression spring 9, the fuel can flow further to the outlet 11 and through it.
  • valve closure plate 7 For proper coaxial guiding of the valve closure plate 7, which is particularly important in the embodiment shown in FIG. 3, in which the valve closure plate 7 has a pin 15 projecting through the outlet 11, the valve closure plate 7 with its radially circumferential edge 16 is designed accordingly Guided tour 17.
  • edge 16 with a spherical cross section prevents the valve closure plate 7 from jamming in its guide 17.
  • a plastic covering 19 designed as a disk is arranged on the support surface 18.
  • the valve closure plate 7 is axially movable between the support surface 18 provided with the plastic covering 19 and the ring seat 10.
  • the pin 15 shown in FIG. 3 has a fillet-shaped transition 20 to the outlet-side surface of the valve closure plate 7, this transition 20 being formed as a depression in the outlet-side surface of the valve closure plate 7.
  • This fillet-shaped transition 20 leads to a perfect deflection of the fuel into the outlet 11.
  • the pin 15 is formed with such a rotationally symmetrical deflection surface 21 that it safely causes a certain jet angle and good atomization of the fuel emerging from the outlet 11.
  • the smooth guidance of the valve closure plate 7 in the guide 17 and on the contact ring 12 ensures the uniformity of the fuel flow.

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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)
  • Fuel-Injection Apparatus (AREA)

Abstract

The fuel injector for injection systems of internal combustion engines has a valve casing 1, a soft-iron core 4 arranged within the valve casing and carrying a fixed solenoid winding 3, and a valve closure plate 7 forming an armature and situated coaxially opposite the said core to form an air gap. The plate can be pressed onto an annular seat 10 surrounding an outlet 11 by a compression spring 9 and is guided with axial mobility by its radially encircling rim 16 against a guide 17 surrounding the latter in corresponding fashion. The valve closure plate 7 can be supported with the radially outer region of the face which is on the outlet side against a bearing ring 12 which surrounds the annular seat 10 concentrically with radial spacing and is arranged at approximately the same distance from the valve closure plate 7 as the annular seat 10. <IMAGE>

Description

Die Erfindung betrifft ein elektromagnetisch betätigbares Kraftstoffeinspritzventil für EinspritzanlagEn von Brennkraftmaschinen, mit einem Ventilgehäuse, einem innerhalb des Ventilgehäuses angeordneten, eine feststehende Hubmagnetwicklung tragenden Weicheisenkern und einer diesem gleichachsig und unter Bildung eines Luftspaltes gegenüberstehenden, einen Anker bildenden Ventilverschlußplatte, die von einer Druckfeder in Anlage auf einen einen Auslaß umschließenden Ringsitz beaufschlagbar und mit ihrem radial umlaufenden Rand an einer diesen entsprechend umschließenden Führung axial bewegbar geführt ist.The invention relates to an electromagnetically actuated fuel injection valve for injection systems of internal combustion engines, with a valve housing, a soft iron core arranged within the valve housing and carrying a fixed lifting magnet winding, and a valve closure plate which forms an armature and which forms an armature and forms an armature an annular seat enclosing an outlet can be acted upon and is guided axially movably with its radially circumferential edge on a guide correspondingly enclosing it.

Bei derartigen bekannten Kraftstoffeinspritzventilen, die den Vorteil einer einfachen und kostengünstigen Herstellbarkeit haben, liegt im geschlossenen Zustand die Ventilverschlußplatte auf dem Ringsitz auf. Da dieser Ringsitz hervorstehend ausgebildet ist, kann es durch nichtzentrische Beaufschlegung der Ventilverschlußplatte durch die Druckfeder zu einem Kippen der Ventilverschlußplatte kommen, wenn diese zum Öffnen des Ventils vom Ringsitz abgehoben wird.In such known fuel injection valves, which have the advantage of simple and inexpensive manufacture availability, the valve closure plate lies on the ring seat when closed. Since this ring seat is designed to protrude, non-centric application of the valve closure plate by the compression spring can cause the valve closure plate to tilt when it is lifted off the ring seat to open the valve.

Durch ein solches Kippen ergibt sich zwischen Ringsitz und Ventilverschlußplatte auf der einen Seite ein geringerer Durchlaßspalt, während auf der diesem radial gegenüberliegenden Seite ein großer Durchlaßspalt entsteht.Such tilting results in a smaller passage gap on one side between the ring seat and valve closure plate, while a large passage gap is formed on the side radially opposite this.

Dieses ungleichmäßige Öffnen führt aber auch zu einem ungleichmäßigen Einströmen des Kraftstoffs in den Auslaß. Da sich dadurch dort völlig unkontrollierte Strömungsverhältnisse ergeben, kommt es nicht zu einem gleichmässigen Austritt des Kraftstoffes aus dem Auslaß. Ein solcher gleichmäßiger Austritt des Kraftstoffes aus dem Auslaß ist aber erforderlich.However, this uneven opening also leads to an uneven inflow of fuel into the outlet. Since this results in completely uncontrolled flow conditions, the fuel does not emerge evenly from the outlet. Such a uniform exit of the fuel from the outlet is necessary.

Aufgabe der Erfindung ist es daher ein Kraftstoffeinspritzventil nach dem Oberbegriff zu schaffen, das einen weitestgehend gleichmäßigen Kraftstoffzustrom zum Auslaß gewährleistet.The object of the invention is therefore to provide a fuel injection valve according to the preamble, which ensures a largely uniform fuel flow to the outlet.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Ventilverschlußplatte mit dem radial äußeren Bereich ihrer auslaßseitigen Fläche an einem den Ringsitz mit radialem Abstand konzentrisch umschließenden Anlagering abstützbar ist, der mit annähernd dem gleichen Abstand zur Ventilverschlußplatte wie der Ringsitz angeordnet ist. Durch den Anlagering kann die Ventilverschlußplatte beim Öffnungs- oder Schließvorgang nicht mehr auf einer Kante des Ringsitzes sondern nur auf einer Kante des wesentlich weiter radial außen befindlichen Anlageringes kippen. Dadurch kommt es zwangsläufig immer zu einem gleichzeitigen Öffnungs- oder Schließvorgang am gesamten Umfang des Ringsitzes und damit zu einem weitestgehend gleichmäßigen Kraftstoffzustrom zum Auslaß.This object is achieved in that the valve closure plate with the radially outer region of its outlet-side surface can be supported on a bearing ring concentrically surrounding the ring seat with a radial distance, which is arranged at approximately the same distance from the valve closure plate as the ring seat. Due to the contact ring, the valve closure plate can no longer on one edge of the ring seat during the opening or closing process but only on one edge of the essential Tilt the contact ring further radially outwards. As a result, there is always a simultaneous opening or closing process on the entire circumference of the ring seat and thus a largely uniform fuel inflow to the outlet.

Damit der zuströmende Kraftstoff ungehindert zu dem Bereich des Ringsitzes gelangen kann, kann die Ventilplatte mehrere gleichmäßig auf der Fläche der Ventilverschlußplatte verteilte, axial durchgehende Durchgangsbohrungen besitzen, die in den Bereich zwischen Ringsitz und Anlagering münden.So that the inflowing fuel can reach the area of the ring seat unhindered, the valve plate can have a plurality of axially continuous through bores which are uniformly distributed on the surface of the valve closure plate and which open into the area between the ring seat and the bearing ring.

Ein Verklemmen und Verkanten der axial an der Führung geführten Ventilplatte wird dadurch verhindert, daß die Ventilplatte an ihrem radial umlaufenden Rand einen balligen Querschnitt besitzt.Jamming and canting of the valve plate guided axially on the guide is prevented in that the valve plate has a spherical cross-section at its radially circumferential edge.

Desgleichen wird bei einem Schließvorgang ein ungleichmäßiges Abheben der Ventilverschlußplatte von ihrem Anschlag in der Offenposition dadurch vermieden, daß die Ventilverschlußplatte mit ihrer dem Auslaß abgewandten Fläche an einer mit einem Kunststoffbelag versehenen Abstützfläche abstützbar ist.Likewise, an uneven lifting of the valve closure plate from its stop in the open position is avoided in a closing process in that the valve closure plate can be supported with its surface facing away from the outlet on a support surface provided with a plastic covering.

Die Ventilplatte kann einen koaxial hervorstehenden, durch bzw. in den Auslaß ragenden Zapfen aufweisen, wobei der Kraftstoffzustrom zum Auslaß dadurch besonders gleichmässig wird, daß der Zapfen einen hohlkehlförmigen Übergang zur auslaßseitigen Fläche der Ventilverschlußplatte besitzt. Ist dabei der Übergang in der auslaßseitigen Fläche der Ventilverschlußplatte eine Vertiefung bildend ausgebildet, so wird dieser Zustrom besonders günstig beeinflußt.The valve plate can have a coaxially protruding pin which projects through or into the outlet, the fuel inflow to the outlet being particularly uniform in that the pin has a fillet-shaped transition to the outlet-side surface of the valve closure plate. If the transition in the outlet-side surface of the valve closure plate forms a depression, this influx is influenced particularly favorably.

Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden im folgenden beschrieben.Embodiments of the invention are shown in the drawing and are described below.

Es zeigen

  • Figur 1 eine Seitenansicht eines Kraftstoffeinspritzventils im Halbschnitt
  • Figur 2 ein vergrößerter Ausschnitt aus einem Kraftstoffeinspritzventil entsprechend Fig. 1
  • Figur 3 ein vergrößerter Ausschnitt aus dem Kraftstoffeinspritzventil nach Fig. 1
Show it
  • Figure 1 is a side view of a fuel injector in half section
  • FIG. 2 shows an enlarged detail from a fuel injection valve corresponding to FIG. 1
  • FIG. 3 shows an enlarged detail from the fuel injection valve according to FIG. 1

Die dargestellten Kraftstoffeinspritzventile besitzen ein Ventilgehäuse 1 in dem ein Wickelkörper 2 mit der Magnetwicklung 3 angeordnet ist. Durch den Wickelkörper 2 erstreckt sich ein mit einer Durchgangsbohrung 5 versehener Weicheisenkern 4, der mit seinem einen aus dem Ventilgehäuse herausragenden Ende einen Einlaßstutzen 6 bildet.The fuel injection valves shown have a valve housing 1 in which a winding body 2 with the magnetic winding 3 is arranged. A soft iron core 4 provided with a through hole 5 extends through the winding body 2 and forms an inlet connection 6 with its one end protruding from the valve housing.

Der anderen Stirnseite des Weicheisenkerns 4 steht unter Bildung eines Luftspaltes eine einen Ankerlbildende Ventilverschlußplatte 7 gegenüber, die an ihrer dem Weicheisenkern 4 entgegengesetzten Seite eine Dichtfläche 8 besitzt.The other end face of the soft iron core 4 is opposed by an air gap forming an anchor-forming valve closure plate 7 which has a sealing surface 8 on its side opposite the soft iron core 4.

Durch Beaufschlagung von einer am Weicheisenkern 4 abgestützten Druckfeder 9 wird die Ventilverschlußplatte 7 zur Anlage an einen axial zur Ventilverschlußplatte 7 hervorstehenden Ringsitz 10 beaufschlagt, der einen Auslaß 11 umschließt.By acting on a compression spring 9 supported on the soft iron core 4, the valve closure plate 7 is urged to bear against an annular seat 10 projecting axially to the valve closure plate 7 and enclosing an outlet 11.

Mit radialem Abstand ist der Ringsitz 10 von einem ebenfalls axial zur Ventilverschlußplatte 7 hervorstehenden Anlagering 12 umschlossen, der einen gering größeren Abstand zur Ventilverschlußplatte 7 besitzt, als der Ringsitz 10.At a radial distance, the ring seat 10 is from a system which also projects axially from the valve closure plate 7 enclosed ring 12, which has a slightly larger distance to the valve closure plate 7 than the ring seat 10th

Von der Durchgangsbohrung 5 gelangt der Kraftstoff durch radiale Durchgangsnuten 13 an der Stirnseite des Weicheisenkerns 4 und axiale Durchgangsbohrung 14 in der Ventilverschlußplatte 7 in den Ringspalt der zwischen dem Ringsitz 10 und dem Anlagering 12 gebildet ist. Bei-entgegen der Kraft der Druckfeder 9 von dem Ringsitz 10 abgehobener Ventilverschlußplatte 7 kann der Kraftstoff weiter zum Auslaß 11 und durch diesen hindurch strömen.From the through bore 5, the fuel passes through radial through grooves 13 on the end face of the soft iron core 4 and axial through bore 14 in the valve closure plate 7 into the annular gap which is formed between the annular seat 10 and the contact ring 12. When the valve closure plate 7 is lifted from the ring seat 10 against the force of the compression spring 9, the fuel can flow further to the outlet 11 and through it.

Zum einwandfreien koaxialen Führen der Ventilverschlußplatte 7, was insbesondere bei dem in Fig. 3 dargestellten Ausführungsbeispiel wichtig ist, bei dem die Ventilverschlußplatte 7 einen durch den Auslaß 11 ragenden Zapfen 15 besitzt, ist die Ventilverschlußplatte 7 mit ihrem radial umlaufenden Rand 16 in einer entsprechend ausgebildeten Führung 17 geführt.For proper coaxial guiding of the valve closure plate 7, which is particularly important in the embodiment shown in FIG. 3, in which the valve closure plate 7 has a pin 15 projecting through the outlet 11, the valve closure plate 7 with its radially circumferential edge 16 is designed accordingly Guided tour 17.

Durch die Ausbildung des Randes 16 mit balligem Querschnitt kann es nicht zu einem Verklemmen der Ventilverschlußplatte 7 in ihrer Führung 17 kommen. Um ein magnetisches Kleben der Ventilverschlußplatte 7 an ihrer magnetseitigen Ab- stützfläche 18 zu verhindern, ist auf der Abstützfläche 18 ein als Scheibe ausgebildeter Kunststoffbelag 19 angeordnet.The formation of the edge 16 with a spherical cross section prevents the valve closure plate 7 from jamming in its guide 17. In order to prevent the valve closure plate 7 from sticking magnetically to its support surface 18 on the magnet side, a plastic covering 19 designed as a disk is arranged on the support surface 18.

Die Ventilverschlußplatte 7 ist zwischen der mit dem Kunststoffbelag 19 versehenen Abstützfläche 18 und dem Ringsitz 10 axial bewegbar.The valve closure plate 7 is axially movable between the support surface 18 provided with the plastic covering 19 and the ring seat 10.

Da sich der Anlagering 12 im radial äußeren Bereich der Ventilverschlußplatte 7 befindet, kommt es schon bei der geringsten Öffnungsbewegung zu einem Abheben der Ventilverschlußplatte an der gesamten Fläche des Ringsitzes 10, so daß Kraftstoff von allen Seiten her zum Auslaß 11 strömen kann.Since the bearing ring 12 is located in the radially outer region of the valve closure plate 7, the Ventilver is lifted off with the slightest opening movement end plate on the entire surface of the ring seat 10 so that fuel can flow from all sides to the outlet 11.

Der in Figur 3 dargestellte Zapfen 15 hat einen hohlkehlförmigen Übergang 20 zur auslaßseitigen Fläche der Ventilverschlußplatte 7, wobei dieser Übergang 20 eine Vertiefung in der auslaßseitigen Fläche der Ventilverschlußplatte 7 bildend ausgebildet ist. Dieser hohlkehlförmige Übergang 20 führt zu einem einwandfreien Umlenken des Kraftstoffs in den Auslaß 11 hinein.The pin 15 shown in FIG. 3 has a fillet-shaped transition 20 to the outlet-side surface of the valve closure plate 7, this transition 20 being formed as a depression in the outlet-side surface of the valve closure plate 7. This fillet-shaped transition 20 leads to a perfect deflection of the fuel into the outlet 11.

Der Zapfen 15 ist mit einer solchen rotationssymetrischen Umlenkfläche 21 ausgebildet, daß er sicher einen bestimmten Strahlwinkel und eine gute Zerstäubung des aus dem Auslaß 11 austretenden Kraftstoffs bewirkt. Für die Gleichmäßigkeit des Kraftstoffzuflußes sorgt dabei die einwandfreie Führung der Ventilverschlußplatte 7 in der Führung 17 und an dem Anlagering 12.The pin 15 is formed with such a rotationally symmetrical deflection surface 21 that it safely causes a certain jet angle and good atomization of the fuel emerging from the outlet 11. The smooth guidance of the valve closure plate 7 in the guide 17 and on the contact ring 12 ensures the uniformity of the fuel flow.

Claims (7)

1. Elektromagnetisch betätigbares Kraftstoffeinspritzventil für Einspritzanlagen von Brennkraftmaschinen, mit einem Ventilgehäuse, einem innerhalb des Ventilgehäuses angeordneten, eine feststehende Hubmagnetwicklung tragenden Weicheisenkern und einer diesem gleichachsig und unter Bildung eines Luftspaltes gegenüberstehenden, einen Anker bildenden Ventilverschlußplatte, die von einer Druckfeder in Anlage auf einen einen Auslaß umschließenden Ringsitz beaufschlagbar und mit ihrem radial umlaufenden Rand an einer diesen entsprechend umschließenden Führung axial bewegbar geführt ist, dadurch gekennzeichnet, daß die Ventilverschlußplatte (7) mit dem radial äußeren Bereich ihrer auslaßseitigen Fläche an einem den Ringsitz (10) mit radialem Abstand konzentrisch umschliessenden Anlagering (12) abstützbar ist, der mit annähernd dem gleichen Abstand zur Ventilverschlußplatte (7) wie der Ringsitz (10) angeordnet ist.1. Electromagnetically actuated fuel injection valve for injection systems of internal combustion engines, with a valve housing, a soft iron core arranged within the valve housing and carrying a fixed lifting magnet winding, and a valve closure plate that forms an armature and faces it, forming an armature, and is formed by an compression spring in contact with one The ring seat enclosing the outlet can be acted upon and its radially circumferential edge is guided so that it can move axially on a guide correspondingly surrounding it, characterized in that the valve closure plate (7) concentrically surrounds the radially outer region of its outlet-side surface on a ring seat (10) with a radial distance Send support ring (12) can be supported, which is arranged at approximately the same distance from the valve closure plate (7) as the ring seat (10). 2. Kraftstoffeinspritzventil nach Anspruch 1, dadurch gekennzeichnet, daß die Ventilverschlußplatte (7) mehrere gleichmäßig auf der Fläche der Ventilverschlußplatte verteilte, axial durchgehende Durchgangsbohrungen (14) besitzt, die in den Bereich zwischen Ringsitz (10) und Anlagering (12) münden.2. Fuel injection valve according to claim 1, characterized in that the valve closure plate (7) has a plurality of axially continuous through bores (14) distributed uniformly on the surface of the valve closure plate, which open into the area between the ring seat (10) and the bearing ring (12). 3. Kraftstoffeinspritzventil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Ventilverschlußplatte (7) an ihrem radial umlaufenden Rand (16) einen balligen Querschnitt besitzt.3. Fuel injection valve according to one of the preceding claims, characterized in that the valve closure plate (7) has a spherical cross-section at its radially circumferential edge (16). 4. Kraftstoffeinspritzventil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Ventilverschlußplatte (7) mit ihrer dem Auslaß (11) abgewandten Fläche an einer mit einem Kunststoffbelag (19) versehenen Abstützfläche (18) abstützbar ist.4. Fuel injection valve according to one of the preceding claims, characterized in that the valve closure plate (7) can be supported with its surface facing away from the outlet (11) on a support surface (18) provided with a plastic covering (19). 5. Kraftstoffeinspritzventil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Ventilverschlußplatte (7) einen koaxial hervorstehenden, durch bzw. in den Auslaß (11) ragenden Zapfen (15) aufweist.5. Fuel injection valve according to one of the preceding claims, characterized in that the valve closure plate (7) has a coaxially projecting, through or in the outlet (11) projecting pin (15). 6. Kraftstoffeinspritzventil nach Anspruch 5, dadurch gekennzeichnet, daß der Zapfen (15) einen hohlkehlförmigen Übergang (20) zur auslaßseitigen Fläche der Ventilverschlußplatte (7) besitzt.6. Fuel injection valve according to claim 5, characterized in that the pin (15) has a fillet-shaped transition (20) to the outlet-side surface of the valve closure plate (7). 7. Kraftstoffeinspritzventil nach Anspruch 6, dadurch gekennzeichnet, daß der Übergang (20) in der auslaßseitigen Fläche der VentilverschluBplatte (7) eine Vertie- fung bildend ausgebildet ist.7. Fuel injection valve according to claim 6, characterized in that the transition (20) in the outlet side surface of the VentilverschluBplatte (7) ertie- a V is formed Fung forming.
EP85115032A 1984-12-06 1985-11-27 Electromagnetically actuated fuel injector Withdrawn EP0184125A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843444454 DE3444454A1 (en) 1984-12-06 1984-12-06 ELECTROMAGNETICALLY ACTUABLE FUEL INJECTION VALVE
DE3444454 1984-12-06

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EP0184125A1 true EP0184125A1 (en) 1986-06-11

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DE (1) DE3444454A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987007334A2 (en) * 1986-05-31 1987-12-03 Robert Bosch Gmbh Fuel injection valve

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1060663B (en) * 1954-04-01 1959-07-02 Caterpillar Tractor Co Injection nozzle for internal combustion engines
GB2124430A (en) * 1982-07-29 1984-02-15 Lucas Ind Plc An electromgnetic fuel injector with a plate-type armature
GB2136500A (en) * 1983-03-16 1984-09-19 Lucas Ind Plc Electromagnetic fuel injector
GB2144060A (en) * 1983-07-28 1985-02-27 Lucas Ind Plc Electromagnetic valve assembly

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1060663B (en) * 1954-04-01 1959-07-02 Caterpillar Tractor Co Injection nozzle for internal combustion engines
GB2124430A (en) * 1982-07-29 1984-02-15 Lucas Ind Plc An electromgnetic fuel injector with a plate-type armature
GB2136500A (en) * 1983-03-16 1984-09-19 Lucas Ind Plc Electromagnetic fuel injector
GB2144060A (en) * 1983-07-28 1985-02-27 Lucas Ind Plc Electromagnetic valve assembly

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987007334A2 (en) * 1986-05-31 1987-12-03 Robert Bosch Gmbh Fuel injection valve
WO1987007334A3 (en) * 1986-05-31 1987-12-30 Bosch Gmbh Robert Fuel injection valve
EP0393328A1 (en) * 1986-05-31 1990-10-24 Robert Bosch Gmbh Fuel injection valve

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