EP1364115B1 - Fuel injection valve - Google Patents

Fuel injection valve Download PDF

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Publication number
EP1364115B1
EP1364115B1 EP02717966A EP02717966A EP1364115B1 EP 1364115 B1 EP1364115 B1 EP 1364115B1 EP 02717966 A EP02717966 A EP 02717966A EP 02717966 A EP02717966 A EP 02717966A EP 1364115 B1 EP1364115 B1 EP 1364115B1
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EP
European Patent Office
Prior art keywords
fuel injection
injection valve
connecting plug
valve
valve according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP02717966A
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German (de)
French (fr)
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EP1364115A1 (en
Inventor
Dieter Maier
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
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Robert Bosch GmbH
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Publication date
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Publication of EP1364115A1 publication Critical patent/EP1364115A1/en
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Publication of EP1364115B1 publication Critical patent/EP1364115B1/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00Fuel-injection apparatus characterised by being operated electrically
    • F02M51/005Arrangement of electrical wires and connections, e.g. wire harness, sockets, plugs; Arrangement of electronic control circuits in or on fuel injection apparatus
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/168Assembling; Disassembling; Manufacturing; Adjusting
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/16Sealing of fuel injection apparatus not otherwise provided for
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/90Selection of particular materials
    • F02M2200/9015Elastomeric or plastic materials

Definitions

  • the invention is based on a fuel injector according to the preamble of claim 1.
  • a disadvantage of that known from DE 198 53 102 A1 Fuel injector is particularly that with the Plastic encapsulation one-piece electrical Plug contact only through great effort by retrofitting the Injection molding machines adapted to different connector systems can be.
  • the line of fuel is off Injection molded plastic part disadvantageous because of Plastic is exposed to the solvent power of the fuel and thereby leaks by loosening the plastic may occur. Furthermore, the stability of the Connection part by heating and subsequent deformation insufficient when operating the internal combustion engine guaranteed.
  • the fuel injector according to the invention with the has characteristic features of claim 1 in contrast, the advantage that the metallic hollow body, which in an inlet end of the valve sleeve of the Fuel injector is inserted that Fuel injector both stabilized as well neutral basis for the assembly of various connectors provides the easy way to extend the Fuel injector can be clipped.
  • the connector by means of a Mounted on the metallic hollow body or can be clipped, the bracket for example how a spring washer can be designed, the metallic Hollow body partially includes.
  • the contact lugs of the magnetic coil are advantageously and the connector parallel to each other and to Valve sleeve aligned, which is easy to assemble and subsequent connection enabled.
  • Another advantage is that both Fuel injector as well as the metallic one Hollow bodies can be produced separately and then can be combined without the conventional components the design of the fuel injectors changed Need to become.
  • Fig. 1 shows in a partial, schematic Sectional view of a longitudinal section through a Fuel injection valve 1, which in particular for Injecting fuel into a not shown Intake pipe of an internal combustion engine is suitable.
  • the fuel injection valve 1 comprises a solenoid coil 2, which is wound on a bobbin 3.
  • the coil former 3 is encapsulated in a valve housing 4 and through a Cover 5 completed.
  • On the coil carrier 3 is one Contact lug 6 formed in the embodiment parallel to a longitudinal axis 33 of the Fuel injector 1 is aligned.
  • the coil former 3 is supported by a valve sleeve 7 penetrated, which is tubular and a therein comprises expanded or welded support tube 8, which serves as the inner pole of the magnet coil 2.
  • a valve sleeve 7 penetrated, which is tubular and a therein comprises expanded or welded support tube 8, which serves as the inner pole of the magnet coil 2.
  • the magnet coil 2 can, for example, the valve housing 4 serve.
  • An armature 9 is located on the outflow side of the support tube 8 arranged in one piece with a valve needle 10 is trained.
  • Flow openings 11 are provided, which the Fuel injection valve 1 flowing through fuel a seal seat.
  • valve needle 10 is preferably in operative connection with welding a spherical in the embodiment Valve closing body 13, which has a valve seat body 14 forms a sealing seat. Downstream of the sealing seat is in a spray plate 34 at least one spray orifice 15 trained from which the fuel in the no further the intake manifold shown is injected.
  • the anchor 9 is in the idle state of the Fuel injector 1 from a return spring 16 so applied that the fuel injector 1 by the Pressure of the valve closing body 13 on the valve seat body 14 is kept closed.
  • the return spring 16 is in a recess 17 of the armature 9 or the support tube 8 arranged and is on by an adjusting sleeve 18 Brought preload.
  • the adjusting sleeve 18 is on the inlet side a cup-shaped filter element 19 in the valve sleeve 7 preferably pressed.
  • the fuel generated by a central fuel supply 20 is supplied, flows through the fuel injector 1 through the recess 17 and the flow openings 11 to the sealing seat and Spray opening 15.
  • the fuel injector 1 is closed as soon as the the solenoid 2 exciting current turned off and that Magnetic field is reduced so far that the return spring 16th the anchor 9 pushes off the support tube 8, whereby the Valve needle 10 moves in the outflow direction and the Valve closing body 13 is placed on the valve seat body 14.
  • Fig. 2 shows that in an excerpted sectional view shown in Fig. 1 and with the invention Measures equipped and assembled Fuel injector 1. The same components are included matching reference numerals. On a Repeating description of already known components to be dispensed with.
  • the fuel injection valve 1 is in a final production state in FIG. 2 shown.
  • a collar 22 is on that Valve housing 4 attached at its lower end or injection molded, whereby an annular groove is formed in the one first seal 23 is introduced.
  • a tubular, metallic hollow body 25 inserted and with the valve sleeve 7 z. B. in the area of the filter element 19th welded.
  • a customer-specific connector 26 On the metallic hollow body 25 is a customer-specific connector 26 by means of a preferably made of plastic holder 27th attached, which is designed for example as a spring washer and the metallic hollow body 25 at least partially embraces.
  • the connector plug 26 has a contact tab 28 on the contact lug 6 of the magnet coil 2 aligned and after assembly using suitable Techniques such as B. welding, soldering or gluing or with a clamp or plug connection is connected to it.
  • the fuel injector 1 has the connector 26 a plastic sleeve 29, which the contact tab 28th surrounds and protrudes beyond them.
  • the plastic sleeve 29 is also known as a clip connector and has one circumferential groove 30, which in the further processing as Approach to a molding tool.
  • the seal between the connector 26 and the Plastic encapsulation 31 takes place by melting the Connector 26 in the area of targeted, circular circumferential tips 35 in the central region 36 of the connector 26, which is why the plastic Plastic extrusion 31 have a higher melting point must be the same as that of the connector 26.
  • the connector 26 is in a certain desired plastic paint used, so that for Color coding serving connector 26 the Fuel injector 1 without additional information characterize clearly. About one Different valve types can be very color coded simply assign.

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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 Brennstoffeinspritzventil nach der Gattung des Anspruchs 1.The invention is based on a fuel injector according to the preamble of claim 1.

Aus der DE 198 53 102 A1 ist ein Brennstoffeinspritzventil für Brennkraftmaschinen bekannt, das aus zwei vormontierten eigenständigen Baugruppen zusammengesetzt ist. Dabei umfaßt ein Funktionsteil im wesentlichen einen elektromagnetischen Kreis und ein Dichtventil, während ein Anschlußteil hauptsächlich von einem hydraulischen Anschluß und einem elektrischen Anschluß gebildet ist. Im fertig montierten Brennstoffeinspritzventil wirken elektrische Verbindungselemente und hydraulische Verbindungselemente beider Baugruppen zusammen, so daß eine zuverlässige elektrische und hydraulische Verbindung gewährleistet ist. Die mechanische Verbindung beider Baugruppen und eine hohe Stabilität des Brennstoffeinspritzventils sowie eine ausreichende Dichtheit garantiert eine Umspritzung im Verbindungsbereich.DE 198 53 102 A1 discloses a fuel injector known for internal combustion engines, the two pre-assembled independent assemblies is composed. Includes a functional part essentially an electromagnetic Circuit and a sealing valve while a connector mainly of a hydraulic connection and one electrical connection is formed. In the fully assembled Fuel injector act electrically Fasteners and hydraulic fasteners both modules together, so that a reliable electrical and hydraulic connection is guaranteed. The mechanical connection of both assemblies and a high Stability of the fuel injector and a A sufficient encapsulation guarantees an encapsulation in the Connection area.

Nachteilig bei dem aus der DE 198 53 102 A1 bekannten Brennstoffeinspritzventil ist insbesondere, daß der mit der Kunststoffumspritzung einteilig hergestellte elektrische Steckkontakt nur durch großen Aufwand mittels Umrüstung der Spritzgußmaschinen auf verschiedene Steckersysteme angepaßt werden kann.A disadvantage of that known from DE 198 53 102 A1 Fuel injector is particularly that with the Plastic encapsulation one-piece electrical Plug contact only through great effort by retrofitting the Injection molding machines adapted to different connector systems can be.

Außerdem ist die Leitung des Brennstoffs durch das aus Kunststoff gespritzte Anschlußteil von Nachteil, da der Kunststoff der Lösungskraft des Brennstoffs ausgesetzt ist und dadurch Undichtigkeiten durch Anlösen des Kunststoffes auftreten können. Ferner ist die Stabilität des Anschlußteils durch Erwärmung und nachfolgende Verformung beim Betrieb der Brennkraftmaschine nicht ausreichend gewährleistet.In addition, the line of fuel is off Injection molded plastic part disadvantageous because of Plastic is exposed to the solvent power of the fuel and thereby leaks by loosening the plastic may occur. Furthermore, the stability of the Connection part by heating and subsequent deformation insufficient when operating the internal combustion engine guaranteed.

Vorteile der ErfindungAdvantages of the invention

Das erfindungsgemäße Brennstoffeinspritzventil mit den kennzeichnenden Merkmalen des Anspruchs 1 hat demgegenüber den Vorteil, daß der metallische Hohlkörper, der in ein zulaufseitiges Ende der Ventilhülse des Brennstoffeinspritzventils eingeschoben wird, das Brennstoffeinspritzventil sowohl stabilisiert als auch die neutrale Basis für die Montage verschiedener Anschlußstecker bereitstellt, die in einfacher Weise an der Verlängerung des Brennstoffeinspritzventils angeclipt werden können.The fuel injector according to the invention with the has characteristic features of claim 1 in contrast, the advantage that the metallic hollow body, which in an inlet end of the valve sleeve of the Fuel injector is inserted that Fuel injector both stabilized as well neutral basis for the assembly of various connectors provides the easy way to extend the Fuel injector can be clipped.

Durch die in den abhängigen Ansprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterentwicklungen und Verbesserungen des im Hauptanspruch angegebenen Brennstoffeinspritzventils möglich.By the measures listed in the dependent claims advantageous further developments and improvements of the Main claim specified fuel injector possible.

Von Vorteil ist auch, daß der Anschlußstecker mittels einer Halterung auf den metallischen Hohlkörper aufgeschoben oder angeclipt werden kann, wobei die Halterung beispielsweise wie ein Federring ausgeführt sein kann, der den metallischen Hohlkörper teilweise umfaßt.It is also advantageous that the connector by means of a Mounted on the metallic hollow body or can be clipped, the bracket for example how a spring washer can be designed, the metallic Hollow body partially includes.

Vorteilhafterweise sind die Kontaktfahnen der Magnetspule und des Anschlußsteckers parallel zueinander und zur Ventilhülse ausgerichtet, was eine einfache Montage und nachfolgende Verbindung ermöglicht. The contact lugs of the magnetic coil are advantageously and the connector parallel to each other and to Valve sleeve aligned, which is easy to assemble and subsequent connection enabled.

Weiterhin ist von Vorteil, daß sowohl das Brennstoffeinspritzventil als auch der metallische Hohlkörper getrennt herstellbar und anschließend kombinierbar sind, ohne daß die herkömmlichen Komponenten der Brennstoffeinspritzventile in ihrer Bauweise verändert werden müssen.Another advantage is that both Fuel injector as well as the metallic one Hollow bodies can be produced separately and then can be combined without the conventional components the design of the fuel injectors changed Need to become.

Zeichnungdrawing

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung vereinfacht dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen:

Fig. 1
einen schematischen Schnitt durch ein Ausführungsbeispiel eines Funktionsteils eines Brennstoffeinspritzventils, und
Fig. 2
einen schematischen Schnitt durch das in Fig. 1 dargestellte Brennstoffeinspritzventil in Verbindung mit dem erfindungsgemäß ausgestalteten Anschlußteil.
An embodiment of the invention is shown in simplified form in the drawing and explained in more detail in the following description. Show it:
Fig. 1
a schematic section through an embodiment of a functional part of a fuel injector, and
Fig. 2
a schematic section through the fuel injector shown in Fig. 1 in connection with the connecting part designed according to the invention.

Beschreibung des AusführungsbeispielsDescription of the embodiment

Fig. 1 zeigt in einer ausschnittsweisen, schematisierten Schnittdarstellung einen Längsschnitt durch ein Brennstoffeinspritzventil 1, welches insbesondere zum Einspritzen von Brennstoff in ein nicht näher dargestelltes Saugrohr einer Brennkraftmaschine geeignet ist.Fig. 1 shows in a partial, schematic Sectional view of a longitudinal section through a Fuel injection valve 1, which in particular for Injecting fuel into a not shown Intake pipe of an internal combustion engine is suitable.

Das Brennstoffeinspritzventil 1 umfaßt eine Magnetspule 2, die auf einen Spulenträger 3 gewickelt ist. Der Spulenträger 3 ist in einem Ventilgehäuse 4 gekapselt und durch einen Deckel 5 abgeschlossen. Am Spulenträger 3 ist eine Kontaktfahne 6 ausgebildet, die im Ausführungsbeispiel parallel zu einer Längsachse 33 des Brennstoffeinspritzventils 1 ausgerichtet ist. The fuel injection valve 1 comprises a solenoid coil 2, which is wound on a bobbin 3. The coil former 3 is encapsulated in a valve housing 4 and through a Cover 5 completed. On the coil carrier 3 is one Contact lug 6 formed in the embodiment parallel to a longitudinal axis 33 of the Fuel injector 1 is aligned.

Der Spulenträger 3 wird von einer Ventilhülse 7 durchgriffen, die rohrförmig ausgestaltet ist und ein darin eingespreiztes oder verschweißtes Stützrohr 8 umfaßt, welches als Innenpol der Magnetspule 2 dient. Als Außenpol der Magnetspule 2 kann beispielsweise das Ventilgehäuse 4 dienen. Abströmseitig des Stützrohres 8 ist ein Anker 9 angeordnet, der einstückig mit einer Ventilnadel 10 ausgebildet ist. In der Ventilnadel 10 sind Durchströmöffnungen 11 vorgesehen, die den das Brennstoffeinspritzventil 1 durchströmenden Brennstoff zu einem Dichtsitz leiten.The coil former 3 is supported by a valve sleeve 7 penetrated, which is tubular and a therein comprises expanded or welded support tube 8, which serves as the inner pole of the magnet coil 2. As an external pole the magnet coil 2 can, for example, the valve housing 4 serve. An armature 9 is located on the outflow side of the support tube 8 arranged in one piece with a valve needle 10 is trained. In the valve needle 10 are Flow openings 11 are provided, which the Fuel injection valve 1 flowing through fuel a seal seat.

Im Bereich der Durchströmöffnungen 11 ist ein Ringfilter 12 zur Filterung des Brennstoffs angeordnet. Die Ventilnadel 10 steht vorzugsweise durch Schweißen in Wirkverbindung mit einem im Ausführungsbeispiel kugelförmigen Ventilschließkörper 13, der mit einem Ventilsitzkörper 14 einen Dichtsitz bildet. Stromabwärts des Dichtsitzes ist in einer Spritzlochscheibe 34 wenigstens eine Abspritzöffnung 15 ausgebildet, aus der der Brennstoff in das nicht weiter dargestellte Saugrohr eingespritzt wird.In the area of the flow openings 11 there is a ring filter 12 arranged to filter the fuel. The valve needle 10 is preferably in operative connection with welding a spherical in the embodiment Valve closing body 13, which has a valve seat body 14 forms a sealing seat. Downstream of the sealing seat is in a spray plate 34 at least one spray orifice 15 trained from which the fuel in the no further the intake manifold shown is injected.

Der Anker 9 ist im Ruhezustand des Brennstoffeinspritzventils 1 von einer Rückstellfeder 16 so beaufschlagt, daß das Brennstoffeinspritzventil 1 durch den Andruck des Ventilschließkörpers 13 auf den Ventilsitzkörper 14 geschlossen gehalten wird. Die Rückstellfeder 16 ist in einer Ausnehmung 17 des Ankers 9 bzw. des Stützrohres 8 angeordnet und wird durch eine Einstellhülse 18 auf Vorspannung gebracht. Zulaufseitig der Einstellhülse 18 ist ein topfförmiges Filterelement 19 in die Ventilhülse 7 vorzugsweise eingepreßt. Der Brennstoff, der durch eine zentrale Brennstoffzufuhr 20 zugeleitet wird, durchströmt das Brennstoffeinspritzventil 1 durch die Ausnehmung 17 und die Durchströmöffnungen 11 zum Dichtsitz und zur Abspritzöffnung 15.The anchor 9 is in the idle state of the Fuel injector 1 from a return spring 16 so applied that the fuel injector 1 by the Pressure of the valve closing body 13 on the valve seat body 14 is kept closed. The return spring 16 is in a recess 17 of the armature 9 or the support tube 8 arranged and is on by an adjusting sleeve 18 Brought preload. The adjusting sleeve 18 is on the inlet side a cup-shaped filter element 19 in the valve sleeve 7 preferably pressed. The fuel generated by a central fuel supply 20 is supplied, flows through the fuel injector 1 through the recess 17 and the flow openings 11 to the sealing seat and Spray opening 15.

Wird der Magnetspule 2 über eine nicht weiter dargestellte elektrische Leitung und die Kontaktfahne 6 ein elektrischer Strom zugeführt, baut sich ein magnetisches Feld auf, das bei ausreichender Stärke den Anker 9 entgegen der Kraft der Rückstellfeder 16 entgegen der Strömungsrichtung des Brennstoffs in die Magnetspule 2 hineinzieht. Dadurch wird ein zwischen dem Anker 9 und dem Stützrohr 8 ausgebildeter Arbeitsspalt 21 geschlossen. Durch die Bewegung des Ankers 9 wird auch die mit dem Anker 9 einstückig ausgebildete Ventilnadel 10 in Hubrichtung mitgenommen, so daß der Ventilschließkörper 13 vom Ventilsitzkörper 14 abhebt und Brennstoff zur Abspritzöffnung 15 geleitet wird.If the solenoid 2 via a not shown electrical line and the contact tab 6 an electrical Applied to electricity, a magnetic field builds up with sufficient strength the anchor 9 against the force of Return spring 16 against the flow direction of the Pulls fuel into the magnetic coil 2. This will a trained between the armature 9 and the support tube 8 Working gap 21 closed. By moving the armature 9 is also formed in one piece with the anchor 9 Valve needle 10 taken in the stroke direction, so that the Valve closing body 13 lifts off from valve seat body 14 and Fuel is directed to the spray opening 15.

Das Brennstoffeinspritzventil 1 wird geschlossen, sobald der die Magnetspule 2 erregende Strom abgeschaltet und das Magnetfeld soweit abgebaut ist, daß die Rückstellfeder 16 den Anker 9 vom Stützrohr 8 abdrückt, wodurch sich die Ventilnadel 10 in Abströmrichtung bewegt und der Ventilschließkörper 13 auf dem Ventilsitzkörper 14 aufsetzt.The fuel injector 1 is closed as soon as the the solenoid 2 exciting current turned off and that Magnetic field is reduced so far that the return spring 16th the anchor 9 pushes off the support tube 8, whereby the Valve needle 10 moves in the outflow direction and the Valve closing body 13 is placed on the valve seat body 14.

Fig. 2 zeigt in einer auszugsweisen Schnittdarstellung das in Fig. 1 dargestellte und mit den erfindungsgemäßen Maßnahmen ausgestattete und montierte Brennstoffeinspritzventil 1. Gleiche Bauteile sind dabei mit übereinstimmenden Bezugszeichen versehen. Auf eine wiederholende Beschreibung bereits bekannter Bauteile kann verzichtet werden.Fig. 2 shows that in an excerpted sectional view shown in Fig. 1 and with the invention Measures equipped and assembled Fuel injector 1. The same components are included matching reference numerals. On a Repeating description of already known components to be dispensed with.

Das Brennstoffeinspritzventil 1 ist in Fig. 2 in einem End-Fertigungszustand dargestellt. Ein Kragen 22 ist auf das Ventilgehäuse 4 an seinem unteren Ende aufgesteckt oder angespritzt, wodurch eine Ringnut gebildet ist, in die eine erste Dichtung 23 eingebracht ist.The fuel injection valve 1 is in a final production state in FIG. 2 shown. A collar 22 is on that Valve housing 4 attached at its lower end or injection molded, whereby an annular groove is formed in the one first seal 23 is introduced.

In ein zulaufseitiges Ende 24 der Ventilhülse 7 ist ein rohrförmiger, metallischer Hohlkörper 25 eingeschoben und mit der Ventilhülse 7 z. B. im Bereich des Filterelements 19 verschweißt. An den metallischen Hohlkörper 25 wird ein kundenspezifischer Anschlußstecker 26 mittels einer vorzugsweise aus Kunststoff bestehenden Halterung 27 aufgesteckt, die beispielsweise als Federring ausgeführt ist und den metallischen Hohlkörper 25 zumindest teilweise umgreift. Der Anschlußstecker 26 weist eine Kontaktfahne 28 auf, die auf die Kontaktfahne 6 der Magnetspule 2 ausgerichtet und nach der Montage mittels geeigneter Techniken wie z. B. Schweißen, Löten oder Kleben oder mit einer Klemm- bzw. Steckverbindung mit dieser verbunden wird.In an inlet end 24 of the valve sleeve 7 is a tubular, metallic hollow body 25 inserted and with the valve sleeve 7 z. B. in the area of the filter element 19th welded. On the metallic hollow body 25 is a customer-specific connector 26 by means of a preferably made of plastic holder 27th attached, which is designed for example as a spring washer and the metallic hollow body 25 at least partially embraces. The connector plug 26 has a contact tab 28 on the contact lug 6 of the magnet coil 2 aligned and after assembly using suitable Techniques such as B. welding, soldering or gluing or with a clamp or plug connection is connected to it.

Zum Schutz der Kontaktfahne 28 bei der weiteren Bearbeitung des Brennstoffeinspritzventils 1 weist der Anschlußstecker 26 eine Kunststoffhülse 29 auf, die die Kontaktfahne 28 umgibt und über diese hinausragt. Die Kunststoffhülse 29 wird auch als Clip Connector bezeichnet und besitzt eine umlaufende Nut 30, die bei der weiteren Bearbeitung als Ansatz für ein Umspritzungswerkzeug dient.To protect the contact lug 28 during further processing the fuel injector 1 has the connector 26 a plastic sleeve 29, which the contact tab 28th surrounds and protrudes beyond them. The plastic sleeve 29 is also known as a clip connector and has one circumferential groove 30, which in the further processing as Approach to a molding tool.

Nach der Montage des Anschlußsteckers 26 werden das Brennstoffeinspritzventil 1 und der damit verbundene metallische Hohlkörper 25 mit einer Kunststoffumspritzung 31 versehen und zur Montage an einer Brennstoffverteilerleitung mit einer zweiten Dichtung 32 versehen. Dazu werden die jeweiligen kundenspezifischen elektrischen Anschlußstecker 26 beispielsweise in kundeneigene Umspritzungswerkzeuge eingebracht.After mounting the connector 26 that Fuel injector 1 and the related metallic hollow body 25 with a plastic extrusion coating 31 provided and for mounting on a fuel rail provided with a second seal 32. To do this, the respective customer-specific electrical connector 26 for example in customer-specific extrusion tools brought in.

Die Abdichtung zwischen dem Anschlußstecker 26 und der Kunststoffumspritzung 31 erfolgt mittels Anschmelzens des Anschlußsteckers 26 im Bereich von gezielt angeformten, ringförmig umlaufenden Umlaufspitzen 35 im mittleren Bereich 36 des Anschlußsteckers 26, weshalb der Kunststoff der Kunststoffumspritzung 31 einen höheren Schmelzpunkt haben muß als der des Anschlußsteckers 26.The seal between the connector 26 and the Plastic encapsulation 31 takes place by melting the Connector 26 in the area of targeted, circular circumferential tips 35 in the central region 36 of the connector 26, which is why the plastic Plastic extrusion 31 have a higher melting point must be the same as that of the connector 26.

Idealerweise wird der Anschlußstecker 26 in einer bestimmten gewünschten Kunststoffarbe verwendet, so daß die zur Farbkennzeichnung dienenden Anschlußstecker 26 das Brennstoffeinspritzventil 1 ohne weitere Zusatzhinweise deutlich charakterisieren. Über eine solche Farbkennzeichnung lassen sich verschiedene Ventiltypen sehr einfach zuordnen. Ideally, the connector 26 is in a certain desired plastic paint used, so that for Color coding serving connector 26 the Fuel injector 1 without additional information characterize clearly. About one Different valve types can be very color coded simply assign.

Durch die vorstehend beschriebenen Maßnahmen ist es möglich, ein Brennstoffeinspritzventil 1 mit einer neutralen Magnetspule 2 und einer neutralen Kontaktfahne 6 herzustellen, das jeweils mit einem beliebigen elektrischen Anschlußstecker 26 versehen werden kann, ohne daß werksseitig für jeden der unterschiedlichen Anschlußstecker 26 ein Prüfstand und eine Fertigungseinrichtung zur Verfügung stehen muß.The measures described above make it possible a fuel injector 1 with a neutral one Magnetic coil 2 and a neutral contact tab 6 manufacture, each with any electrical Connector 26 can be provided without ex works for each of the different connectors 26 a test bench and a production facility for Must be available.

Claims (8)

  1. Fuel injection valve (1) having a solenoid (2) which interacts with an armature (9) which is acted on by a restoring spring (16) and which, together with a valve needle (10), forms an axially moveable valve part, a valve closing body (13) being provided on the valve needle (10) and forming, with a valve seat body (14), a sealing seat, and having at least one first contact lug (6) which is conductively connected to the solenoid (2), characterized in that a metallic hollow body (25) forms an inflow-side prolongation of the fuel injection valve (1) and in the process is inserted into a valve sleeve (7), and a connecting plug (26) with at least a second contact lug (28) on a mounting element (27) is clamped to the metallic hollow body (25) in such a way that in each case the second contact lug (28) of the connecting plug (26) is conductively connected to the first contact lug (6) of the solenoid (2).
  2. Fuel injection valve according to Claim 1, characterized in that the first contact lug (6) of the solenoid (2) is oriented in parallel with the valve sleeve (7).
  3. Fuel injection valve according to Claim 1 or 2, characterized in that the mounting element (27) of the connecting plug (26) at least partially surrounds the metallic hollow body (25).
  4. Fuel injection valve according to one of Claims 1 to 3, characterized in that the second contact lug (28) of the connecting plug (26) is oriented in parallel with the connecting lug (6) of the solenoid (2).
  5. Fuel injection valve according to one of Claims 1 to 4, characterized in that, after mounting and connection of the first and second contact lugs (6, 28), the contacting plug (26) is fixed to the metallic hollow body (25) by means of a plastic injection-moulded encapsulation (31).
  6. Fuel injection valve according to one of Claims 1 to 5, characterized in that a plastic sleeve (29) which is provided on the connecting plug (26) has a groove (30) into which an injection-moulded encapsulation mould can be fitted.
  7. Fuel injection valve according to Claim 5 or 6, characterized in that the connecting plug (26) has, outside the mounting element (27), a region (36) on which at least one annular, elevated circumferential tip (35) is provided.
  8. Fuel injection valve according to Claim 7, and referred back to Claim 5, characterized in that the plastic of the injection-moulded encapsulation (31) has a higher melting point than the plastic of the connecting plug (26) so that when the connecting plug (26) is encapsulated by injection moulding the circumferential tips (35) are fused on and a sealed connection is thus brought about.
EP02717966A 2001-02-22 2002-02-22 Fuel injection valve Expired - Lifetime EP1364115B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10108464A DE10108464A1 (en) 2001-02-22 2001-02-22 Fuel injector
DE10108464 2001-02-22
PCT/DE2002/000644 WO2002066818A1 (en) 2001-02-22 2002-02-22 Fuel injection valve

Publications (2)

Publication Number Publication Date
EP1364115A1 EP1364115A1 (en) 2003-11-26
EP1364115B1 true EP1364115B1 (en) 2004-11-24

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ID=7675067

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02717966A Expired - Lifetime EP1364115B1 (en) 2001-02-22 2002-02-22 Fuel injection valve

Country Status (8)

Country Link
US (1) US6910642B2 (en)
EP (1) EP1364115B1 (en)
JP (1) JP4130771B2 (en)
CN (1) CN1297742C (en)
CZ (1) CZ20023456A3 (en)
DE (2) DE10108464A1 (en)
RU (1) RU2003127394A (en)
WO (1) WO2002066818A1 (en)

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ATE390553T1 (en) * 2005-11-02 2008-04-15 Delphi Tech Inc INNER FILTER FOR A FUEL INJECTION VALVE
CN100462549C (en) * 2006-10-26 2009-02-18 贵州红林机械有限公司 Gas high precision jet valve
JP4491474B2 (en) * 2007-05-31 2010-06-30 日立オートモティブシステムズ株式会社 Fuel injection valve and its stroke adjusting method
JP2009167843A (en) * 2008-01-11 2009-07-30 Denso Corp Fuel-injection valve and manufacturing method of the same
KR101000169B1 (en) * 2008-12-03 2010-12-10 기아자동차주식회사 Nozzle for LPI injector
DE102010031277A1 (en) * 2010-07-13 2012-01-19 Robert Bosch Gmbh Fuel injector with reduced number of components
DE102011078251A1 (en) * 2011-06-29 2013-01-03 Robert Bosch Gmbh Injection valve and method for producing an injection valve
DE102011084704A1 (en) 2011-10-18 2013-04-18 Robert Bosch Gmbh Alignment element for an injection valve and method for producing an injection valve
US9951731B2 (en) 2013-11-18 2018-04-24 Mitsubishi Electric Corporation Fuel injection valve and manufacturing method for fuel injection valve
WO2016067354A1 (en) 2014-10-28 2016-05-06 三菱電機株式会社 Fuel injection valve
JP7019804B2 (en) * 2018-05-23 2022-02-15 三菱電機株式会社 Fuel injection valve
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Also Published As

Publication number Publication date
CZ20023456A3 (en) 2004-04-14
DE10108464A1 (en) 2002-09-05
CN1457390A (en) 2003-11-19
JP4130771B2 (en) 2008-08-06
CN1297742C (en) 2007-01-31
RU2003127394A (en) 2005-03-20
US20030168532A1 (en) 2003-09-11
JP2004518849A (en) 2004-06-24
WO2002066818A1 (en) 2002-08-29
US6910642B2 (en) 2005-06-28
EP1364115A1 (en) 2003-11-26
DE50201620D1 (en) 2004-12-30

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