EP1651860B1 - Fuel injection valve and method for the assembly thereof - Google Patents

Fuel injection valve and method for the assembly thereof Download PDF

Info

Publication number
EP1651860B1
EP1651860B1 EP20040738738 EP04738738A EP1651860B1 EP 1651860 B1 EP1651860 B1 EP 1651860B1 EP 20040738738 EP20040738738 EP 20040738738 EP 04738738 A EP04738738 A EP 04738738A EP 1651860 B1 EP1651860 B1 EP 1651860B1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
injection valve
filter element
support tube
fuel
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 - Fee Related
Application number
EP20040738738
Other languages
German (de)
French (fr)
Other versions
EP1651860A1 (en
Inventor
Thomas Sebastian
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 EP1651860A1 publication Critical patent/EP1651860A1/en
Application granted granted Critical
Publication of EP1651860B1 publication Critical patent/EP1651860B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

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
    • F02M51/0664—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
    • F02M51/0667—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 acting as a valve or having a short valve body attached thereto
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
    • F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
    • F02M51/0682—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto the body being hollow and its interior communicating with the fuel flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/165—Filtering elements specially adapted in fuel inlets to injector
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/50—Arrangements of springs for valves used in fuel injectors or fuel injection pumps
    • F02M2200/505—Adjusting spring tension by sliding spring seats
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8061—Fuel injection apparatus manufacture, repair or assembly involving press-fit, i.e. interference or friction fit
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S239/00—Fluid sprinkling, spraying, and diffusing
    • Y10S239/23—Screens
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/794—With means for separating solid material from the fluid
    • Y10T137/8085—Hollow strainer, fluid inlet and outlet perpendicular to each other

Definitions

  • the invention relates to a fuel injection valve according to the preamble of claim 1 and a method for assembling a fuel injection valve according to claim 8.
  • the US 5,356,079 describes a filter retaining assembly with a flat or cup-shaped filter medium which is held on an annular mounting frame, preferably of fuel-tolerant plastic.
  • the mounting frame has a nose circumferentially and surrounds the inlet end of the fuel inlet nozzle.
  • the nose in the mounting frame snaps into a circumferential groove on the outer edge of the Brennscherinlivesstutzens and thus fixes the Filter medium at the fuel inlet port.
  • a similar filter holder for a cup-shaped filter medium is also off US 2003/0155447 known.
  • a fuel injector in which a fuel filter is made in one piece with a retaining collar.
  • the retaining collar extends radially beyond the fuel inlet port and has a nose outside of the fuel inlet port.
  • the circumferential nose of the retaining collar forms, together with a groove on the outer circumference of the fuel inlet nozzle a latching connection, by which the fuel filter is fixed defined.
  • a disadvantage of the from the DE 43 25 842 A1 known fuel injection valve is in particular the high production costs incurred for fixing the filter either on the adjusting sleeve or on the fuel inlet. Furthermore, filters and adjusting sleeve made of different materials, which occur at the contact surfaces mainly on the plastic of the filter Abspanungen and abrasion, which can lead to malfunction of the fuel injection valve by the deposition of the particles.
  • the fuel injection valve according to the invention with the features of claim 1 and the inventive method for mounting a fuel injection valve with the features of claim 7 have the advantage of a fast and cost-effective production and assembly and a chip-free and reliable fixation of the filter element in the fuel injection valve.
  • the filter element is pressed with an outer contour of a support tube of the fuel injection valve wherein the press fit of the filter element is effected by the mounting of an extension sleeve whose inner diameter is slightly smaller than an outer diameter of the filter element.
  • the outer contour of the support tube has grooves, in which a Glasmaschinebuchstoffum mousseung the filter element is pressed under pressure.
  • a further advantage is that the grooves can be introduced in a simple manner by turning or by means of a forming steel in the support tube.
  • the filter element is advantageously pot-shaped as conventional filter elements produced from a fabric material and a Glasmaschinebuchstoffum mousseung.
  • Fig. 1 shows for better understanding of the inventive measures first in a sectional, schematic sectional view of a longitudinal section through a fuel injection valve 1 according to the prior art, which is particularly suitable for injecting fuel into a suction pipe of an internal combustion engine, not shown.
  • the fuel injection valve 1 comprises a magnetic coil 2 which is wound on a bobbin 3.
  • the bobbin 3 is encapsulated in a valve housing 4 and closed by a cover 5.
  • a contact lug 6 is formed at the bobbin 3.
  • the bobbin 3 is penetrated by a valve sleeve 7, which is designed tubular and comprises therein a spread or welded support tube 8, which serves as the inner pole of the magnetic coil 2.
  • a valve sleeve 7 As the outer pole of the solenoid coil 2, for example, the valve housing 4 serve.
  • an armature 9 is arranged, which is formed integrally with a valve needle 10.
  • through-flow openings 11 are provided, which guide the fuel injector 1 flowing through the fuel to a sealing seat.
  • a ring filter 12 may be arranged for filtering the fuel.
  • the valve needle 10 is preferably by welding in operative connection with a spherical valve closure member 13 in the embodiment, which forms a sealing seat with a valve seat body 14. Downstream of the sealing seat, at least one spray-discharge opening 15 is formed in a spray-disk 34, from which the fuel is injected into the suction pipe (not shown).
  • the armature 9 is in the idle state of the fuel injection valve 1 by a return spring 16 so acted upon, that the fuel injection valve 1 is kept closed by the pressure of the valve closing body 13 on the valve seat body 14.
  • the return spring 16 is arranged in a recess 17 of the armature 9 and the support tube 8 and is brought by an adjusting sleeve 18 to bias.
  • a cup-shaped filter element 19 is preferably pressed into the valve sleeve 7.
  • the filter element 19 is provided with a brass ring 20, which allows a secure hold of the filter element 19 in the fuel injector 1.
  • the fuel which is supplied through a central fuel supply 22, flows through the fuel injection valve 1 through the recess 17 and the throughflow openings 11 to the sealing seat and to the injection opening 15.
  • Fig. 1B shows in an excerpted sectional view the in Fig. 1A with IB designated section of the in Fig. 1A shown fuel injector 1.
  • the same components are provided with matching reference numerals. A repetitive description of already known components can be dispensed with.
  • the filter element 19 is cup-shaped and consists of a filter 21, which preferably consists of a fabric material 24, and a brass ring 20 for fixing the filter element 19 in the fuel injector 1.
  • a filter 21 which preferably consists of a fabric material 24, and a brass ring 20 for fixing the filter element 19 in the fuel injector 1.
  • the brass ring 20 is preferably designed as a deep-drawn part. The brass ring 20 and the complex sealing of the injection mold cause high production costs of the filter element 19 with the brass ring 20th
  • Fig. 2A shows a schematic sectional view of an embodiment of a filter element 19, which is suitable for equipping a fuel injection valve 1 designed according to the invention.
  • the filter element 19 is cup-shaped similar to the known filter elements 19. It consists of a fabric material 24 which is provided with a fiberglass extrusion coating 25.
  • the assembly of the filter element 19 is carried out according to the invention, as in Fig. 2B shown on the inner pole serving as support tube 8 of the fuel injection valve 1.
  • Fig. 2B shown on the inner pole serving as support tube 8 of the fuel injection valve 1.
  • At an inflow end 26 of the support tube 8 are grooves 27 provided in an outer contour 28 of the support tube 8, which can be produced for example by means of turning or by a mild steel in a simple manner.
  • the filter element 19 is attached to these grooves 27 in the area of the glass fiber plastic extrusion coating 25.
  • the filter element 19 is supported on a shoulder 29 of the support tube 8.
  • the plugged-on filter element 19 has a slightly larger diameter than the support tube 8.
  • an extension sleeve 30, which serves, for example, the connection to a fuel distributor not shown, the outer diameter of the filter element 19 is calibrated to the inner diameter of the extension sleeve 30, which is slightly smaller than the outer diameter of the filter element 19.
  • the filter element 19 is pressed into the grooves 27 of the support tube 8 in the region of the fiberglass extrusion coating 25.
  • a secure hold of the filter element in the fuel injection valve 1 is ensured even with strong temperature fluctuations.
  • the fuel injection valve 1 can be produced by the measures according to the invention in a simple manner by the elimination of the brass ring 20 cheaper without increasing the cost of other components.
  • the invention is not limited to the illustrated embodiment and suitable for any construction of fuel injectors 1, z. B. for fuel injection valves 1 for direct injection or fuel injectors 1 with connection to a common rail system.

Landscapes

  • 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 und einem Verfahren zur Montage eines Brennstoffeinspritzventils nach Anspruch 8.The invention relates to a fuel injection valve according to the preamble of claim 1 and a method for assembling a fuel injection valve according to claim 8.

Bei bereits bekannten Brennstoffeinspritzventilen sind Brennstoffilter in einen Brennstoffeinlaßstutzen eingepreßt und mittels eines Messingrings darin befestigt. Diese Befestigungsart bringt einerseits die Gefahr der Bildung von Abrieb und Spänen mit sich, die zu funktionalen Störungen des Brennstoffeinspritzventils führen können. Andererseits ist die Verwendung des teuren Materials Messing ein Kostenfaktor, welche die Kosten für das Brennstoffeinspritzventil wesentlich erhöht.In previously known fuel injectors, fuel filters are press fit into a fuel inlet port and secured therein by means of a brass ring. On the one hand, this type of fastening entails the risk of the formation of abrasion and swarf, which can lead to functional disturbances of the fuel injection valve. On the other hand, the use of the expensive material brass is a cost factor which substantially increases the cost of the fuel injector.

Die US 5 356 079 beschreibt eine Filterrückhalteanordnung mit einem flachen oder topfförmigen Filtermedium, das an einem ringförmigen Befestigungsrahmen, vorzugsweise aus Brennstoff-tolerantem Kunststoff, gehalten wird. Der Befestigungsrahmen weist umfänglich eine Nase auf und umschließt das zulaufseitige Ende des Brennstoffeinlaßstutzens. Die Nase im Befestigungsrahmen schnappt dabei in eine umlaufende Nut am äußeren Rand des Brennstoffeinlaßstutzens ein und fixiert somit das Filtermedium am Brennstoffeinlaßstutzen. Eine ähnliche Filterhalterung für ein topfförmiges Filtermedium ist ebenfalls aus US 2003/0155447 bekannt.The US 5,356,079 describes a filter retaining assembly with a flat or cup-shaped filter medium which is held on an annular mounting frame, preferably of fuel-tolerant plastic. The mounting frame has a nose circumferentially and surrounds the inlet end of the fuel inlet nozzle. The nose in the mounting frame snaps into a circumferential groove on the outer edge of the Brennstoffeinlaßstutzens and thus fixes the Filter medium at the fuel inlet port. A similar filter holder for a cup-shaped filter medium is also off US 2003/0155447 known.

Aus der DE 43 25 842 A1 ist ein Brennstoffeinspritzventil bekannt, bei dem ein Brennstoffilter einteilig mit einem Haltekragen ausgeführt ist. Der Haltekragen erstreckt sich radial über den Brennstoffeinlaßstutzen hinaus und besitzt außerhalb des Brennstoffeinlaßstutzens eine Nase. Die umlaufende Nase des Haltekragens bildet zusammen mit einer Nut am äußeren Umfang des Brennstoffeinlaßstutzens eine Rastverbindung, durch die der Brennstoffilter definiert befestigt ist. Zwischen dem Grundkörper des Brennstoffilters und der inneren Wandung des Brennstoffeinlaßstutzens liegt nur eine Spielpassung vor, so daß jegliche Spanbildung im Inneren des Brennstoffeinspritzventils vermieden wird.From the DE 43 25 842 A1 a fuel injector is known in which a fuel filter is made in one piece with a retaining collar. The retaining collar extends radially beyond the fuel inlet port and has a nose outside of the fuel inlet port. The circumferential nose of the retaining collar forms, together with a groove on the outer circumference of the fuel inlet nozzle a latching connection, by which the fuel filter is fixed defined. Between the Basic body of the fuel filter and the inner wall of the fuel inlet nozzle is only a clearance fit, so that any chip formation is avoided in the interior of the fuel injection valve.

Nachteilig an dem aus der DE 43 25 842 A1 bekannten Brennstoffeinspritzventil ist insbesondere der hohe Fertigungsaufwand, der zur Fixierung des Filters entweder an der Einstellhülse oder an dem Brennstoffeinlaßstutzen anfällt. Ferner bestehen Filter und Einstellhülse aus unterschiedlichen Materialien, wobei an den Kontaktflächen vorwiegend am Kunststoff des Filters Abspanungen und Abrieb auftreten, was zu Fehlfunktionen des Brennstoffeinspritzventils durch die Ablagerung der Partikel führen kann.A disadvantage of the from the DE 43 25 842 A1 known fuel injection valve is in particular the high production costs incurred for fixing the filter either on the adjusting sleeve or on the fuel inlet. Furthermore, filters and adjusting sleeve made of different materials, which occur at the contact surfaces mainly on the plastic of the filter Abspanungen and abrasion, which can lead to malfunction of the fuel injection valve by the deposition of the particles.

Vorteile der ErfindungAdvantages of the invention

Das erfindungsgemäße Brennstoffeinspritzventil mit den Merkmalen des Anspruchs 1 und das erfindungsgemäße Verfahren zur Montage eines Brennstoffeinspritzventils mit den Merkmalen des Anspruchs 7 haben demgegenüber den Vorteil einer schnellen und kostengünstigen Herstellung und Montage sowie einer spanfreien und zuverlässigen Fixierung des Filterelements im Brennstoffeinspritzventil.The fuel injection valve according to the invention with the features of claim 1 and the inventive method for mounting a fuel injection valve with the features of claim 7 have the advantage of a fast and cost-effective production and assembly and a chip-free and reliable fixation of the filter element in the fuel injection valve.

Dies wird dadurch erreicht, daß das Filterelement mit einer Außenkontur eines Stützrohres des Brennstoffeinspritzventils verpreßt ist wobei die Preßpassung des Filterelements durch die Montage einer Verlängerungshülse erfolgt, deren Innendurchmesser geringfügig kleiner als ein Außendurchmesser des Filterelements ist.This is achieved in that the filter element is pressed with an outer contour of a support tube of the fuel injection valve wherein the press fit of the filter element is effected by the mounting of an extension sleeve whose inner diameter is slightly smaller than an outer diameter of the filter element.

Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterentwicklungen und Verbesserungen des im Anspruch 1 angegebenen Brennstoffeinspritzventils möglich.The measures listed in the dependent claims advantageous developments and improvements of the claim 1 fuel injector are possible.

Vorteilhafterweise weist die Außenkontur des Stützrohres Rillen auf, in welche eine Glasfaserkunststoffumspritzung des Filterelements unter Druck eingepreßt wird.Advantageously, the outer contour of the support tube has grooves, in which a Glasfaserkunststoffumspritzung the filter element is pressed under pressure.

Weiterhin ist von Vorteil, daß die Rillen in einfacher Weise durch Drehen oder mit Hilfe eines Formstahls in das Stützrohr einbringbar sind.A further advantage is that the grooves can be introduced in a simple manner by turning or by means of a forming steel in the support tube.

Das Filterelement ist vorteilhafterweise wie herkömmliche Filterelemente topfförmig aus einem Gewebematerial und einer Glasfaserkunststoffumspritzung herstellbar.The filter element is advantageously pot-shaped as conventional filter elements produced from a fabric material and a Glasfaserkunststoffumspritzung.

Zeichnungdrawing

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

Fig. 1A
einen schematischen Schnitt durch ein Ausführungsbeispiel eines Brennstoffeinspritzventils gemäß dem Stand der Technik,
Fig. 1B
einen auszugsweisen schematischen Ausschnitt aus dem in Fig. 1A dargestellten Brennstoffeinspritzventil im Bereich IB in Fig. 1A,
Fig. 2A
eine schematische Darstellung eines Ausführungsbeispiels eines Filterelements für ein erfindungsgemäß ausgestaltetes Brennstoffeinspritzventil, und
Fig. 2B
eine ausschnittsweise schematische Darstellung eines erfindungsgemäß ausgestalteten Brennstoffeinspritzventils mit einem Filterelement gemäß Fig. 2A.
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. 1A
FIG. 2 shows a schematic section through an exemplary embodiment of a fuel injection valve according to the prior art, FIG.
Fig. 1B
a partial schematic section of the in Fig. 1A illustrated fuel injection valve in the area IB in Fig. 1A .
Fig. 2A
a schematic representation of an embodiment of a filter element for an inventively designed fuel injection valve, and
Fig. 2B
a fragmentary schematic representation of an inventively designed fuel injector with a filter element according to Fig. 2A ,

Beschreibung des AusführungsbeispielsDescription of the embodiment

Fig. 1 zeigt zur besseren Verständlichkeit der erfindungsgemäßen Maßnahmen zunächst in einer ausschnittsweisen, schematisierten Schnittdarstellung einen Längsschnitt durch ein Brennstoffeinspritzventil 1 gemäß dem Stand der Technik, welches insbesondere zum Einspritzen von Brennstoff in ein nicht näher dargestelltes Saugrohr einer Brennkraftmaschine geeignet ist. Fig. 1 shows for better understanding of the inventive measures first in a sectional, schematic sectional view of a longitudinal section through a fuel injection valve 1 according to the prior art, which is particularly suitable for injecting fuel into a suction pipe of an internal combustion engine, not shown.

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.The fuel injection valve 1 comprises a magnetic coil 2 which is wound on a bobbin 3. The bobbin 3 is encapsulated in a valve housing 4 and closed by a cover 5. At the bobbin 3, a contact lug 6 is formed.

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 bobbin 3 is penetrated by a valve sleeve 7, which is designed tubular and comprises therein a spread or welded support tube 8, which serves as the inner pole of the magnetic coil 2. As the outer pole of the solenoid coil 2, for example, the valve housing 4 serve. Downstream of the support tube 8, an armature 9 is arranged, which is formed integrally with a valve needle 10. In the valve needle 10 through-flow openings 11 are provided, which guide the fuel injector 1 flowing through the fuel to a sealing seat.

Im Bereich der Durchströmöffnungen 11 kann ein Ringfilter 12 zur Filterung des Brennstoffs angeordnet sein. 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 region of the flow openings 11, a ring filter 12 may be arranged for filtering the fuel. The valve needle 10 is preferably by welding in operative connection with a spherical valve closure member 13 in the embodiment, which forms a sealing seat with a valve seat body 14. Downstream of the sealing seat, at least one spray-discharge opening 15 is formed in a spray-disk 34, from which the fuel is injected into the suction pipe (not shown).

Der Anker 9 ist im Ruhezustand des Brennstoffeinspritzventils 1 von einer Rückstellfeder 16 so beaufschlagt, daß das Brennstoffeinspritzventil 1 durch den Andruck des Ventilschlieißkörpers 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.The armature 9 is in the idle state of the fuel injection valve 1 by a return spring 16 so acted upon, that the fuel injection valve 1 is kept closed by the pressure of the valve closing body 13 on the valve seat body 14. The return spring 16 is arranged in a recess 17 of the armature 9 and the support tube 8 and is brought by an adjusting sleeve 18 to bias.

Zulaufseitig der Einstellhülse 18 ist ein topfförmiges Filterelement 19 in die Ventilhülse 7 vorzugsweise eingepreßt. Das Filterelement 19 ist dabei mit einem Messingring 20 versehen, welcher einen sicheren Halt des Filterelements 19 im Brennstoffeinspritzventil 1 ermöglicht.On the inlet side of the adjusting sleeve 18, a cup-shaped filter element 19 is preferably pressed into the valve sleeve 7. The filter element 19 is provided with a brass ring 20, which allows a secure hold of the filter element 19 in the fuel injector 1.

Der Brennstoff, der durch eine zentrale Brennstoffzufuhr 22 zugeleitet wird, durchströmt das Brennstoffeinspritzventil 1 durch die Ausnehmung 17 und die Durchströmöffnungen 11 zum Dichtsitz und zur Abspritzöffnung 15.The fuel, which is supplied through a central fuel supply 22, flows through the fuel injection valve 1 through the recess 17 and the throughflow openings 11 to the sealing seat and to the injection 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 23 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 magnetic coil 2 is supplied with an electric current via a not shown electrical lead and the contact lug 6, a magnetic field builds up, which pulls the armature 9 counter to the force of the return spring 16 counter to the flow direction of the fuel into the magnetic coil 2 with sufficient strength , As a result, a working gap 23 formed between the armature 9 and the support tube 8 is closed. By the movement of the armature 9 and the armature 9 integrally formed with the valve needle 10 is taken in the stroke direction, so that the valve closing body 13 lifts off the valve seat body 14 and fuel is directed to the injection 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. Fig. 1B zeigt in einer auszugsweisen Schnittdarstellung den in Fig. 1A mit IB bezeichneten Ausschnitt aus dem in Fig. 1A dargestellte Brennstoffeinspritzventil 1. Gleiche Bauteile sind dabei mit übereinstimmenden Bezugszeichen versehen. Auf eine wiederholende Beschreibung bereits bekannter Bauteile kann verzichtet werden.The fuel injection valve 1 is closed as soon as the solenoid 2 exciting current is turned off and the magnetic field is reduced so far that the return spring 16, the armature 9 depressed from the support tube 8, whereby the valve needle 10 moves in the outflow direction and the valve closing body 13 touches on the valve seat body 14 , Fig. 1B shows in an excerpted sectional view the in Fig. 1A with IB designated section of the in Fig. 1A shown fuel injector 1. The same components are provided with matching reference numerals. A repetitive description of already known components can be dispensed with.

Wie bereits weiter oben erwähnt, ist das Filterelement 19 topfförmig ausgebildet und besteht aus einem Filter 21, der vorzugsweise aus einem Gewebematerial 24 besteht, und einem Messingring 20 zur Fixierung des Filterelements 19 im Brennstoffeinspritzventil 1. Bei der Herstellung wird der Messingring 20 in ein Spritzwerkzeug eingelegt und gemeinsam mit dem eigentlichen Filter 21 mit einer Glasfaserkunststoffumspritzung 25 versehen. Der Messingring 20 ist vorzugsweise als Tiefziehteil ausgelegt. Der Messingring 20 und die aufwendige Abdichtung des Spritzwerkzeugs bedingen hohe Herstellungskosten des Filterelements 19 mit dem Messingring 20.As already mentioned above, the filter element 19 is cup-shaped and consists of a filter 21, which preferably consists of a fabric material 24, and a brass ring 20 for fixing the filter element 19 in the fuel injector 1. In the manufacture of the brass ring 20 in an injection mold inserted and provided together with the actual filter 21 with a Glasfaserkunststoffumspritzung 25. The brass ring 20 is preferably designed as a deep-drawn part. The brass ring 20 and the complex sealing of the injection mold cause high production costs of the filter element 19 with the brass ring 20th

Im Gegensatz dazu ist ein erfindungsgemäß ausgestaltetes Brennstoffeinspritzventil 1 mit einem Filterelement 19 gemäß Fig. 2A und 2B ausgestattet, welches ohne Zuhilfenahme eines Messingrings 20 direkt am Innenpol 8 des Brennstoffeinspritzventils 1 fixiert ist.In contrast, an inventively designed fuel injection valve 1 with a filter element 19 according to FIGS. 2A and 2B equipped, which is fixed without the aid of a brass ring 20 directly to the inner pole 8 of the fuel injection valve 1.

Fig. 2A zeigt dabei in einer schematischen Schnittdarstellung ein Ausführungsbeispiel eines Filterelements 19, welches zur Ausstattung eines erfindungsgemäß ausgestalteten Brennstoffeinspritzventils 1 geeignet ist. Das Filterelement 19 ist ähnlich zu den bekannten Filterelementen 19 topfförmig ausgebildet. Es besteht aus einem Gewebematerial 24, welches mit einer Glasfaserkunststoffumspritzung 25 versehen ist. Fig. 2A shows a schematic sectional view of an embodiment of a filter element 19, which is suitable for equipping a fuel injection valve 1 designed according to the invention. The filter element 19 is cup-shaped similar to the known filter elements 19. It consists of a fabric material 24 which is provided with a fiberglass extrusion coating 25.

Die Montage des Filterelements 19 erfolgt jedoch erfindungsgemäß, wie in Fig. 2B dargestellt, auf dem als Innenpol dienenden Stützrohr 8 des Brennstoffeinspritzventils 1. An einem zuströmseitigen Ende 26 des Stützrohrs 8 sind dabei Rillen 27 in einer Außenkontur 28 des Stützrohrs 8 vorgesehen, welche beispielsweise mittels Drehen oder durch einen Formstahl in einfacher Weise herstellbar sind. Das Filterelement 19 wird im Bereich der Glasfaserkunststoffumspritzung 25 auf diese Rillen 27 aufgesteckt. Das Filterelement 19 stützt sich dabei an einer Schulter 29 des Stützrohres 8 ab. Das aufgesteckte Filterelement 19 weist einen geringfügig größeren Durchmesser als das Stützrohr 8 auf.However, the assembly of the filter element 19 is carried out according to the invention, as in Fig. 2B shown on the inner pole serving as support tube 8 of the fuel injection valve 1. At an inflow end 26 of the support tube 8 are grooves 27 provided in an outer contour 28 of the support tube 8, which can be produced for example by means of turning or by a mild steel in a simple manner. The filter element 19 is attached to these grooves 27 in the area of the glass fiber plastic extrusion coating 25. The filter element 19 is supported on a shoulder 29 of the support tube 8. The plugged-on filter element 19 has a slightly larger diameter than the support tube 8.

Wird danach auf das Stützrohr 8 eine Verlängerungshülse 30 montiert, welches beispielsweise dem Anschluß an eine nicht weiter dargestellte Brennstoffverteilerleitung dient, wird der Außendurchmesser des Filterelements 19 auf den Innendurchmesser der Verlängerungshülse 30 kalibriert, welcher geringfügig kleiner als der Außendurchmesser des Filterelements 19 ist. Dadurch wird das Filterelement 19 im Bereich der Glasfaserkunststoffumspritzung 25 in die Rillen 27 des Stützrohrs 8 eingepreßt. Dadurch ist ein sicherer Halt des Filterelements im Brennstoffeinspritzventil 1 auch bei starken Temperaturschwankungen gewährleistet. Das Brennstoffeinspritzventil 1 ist durch die erfindungsgemäßen Maßnahmen in einfacher Weise durch den Wegfall des Messingrings 20 kostengünstiger ohne Verteuerung anderer Bauteile herstellbar.Is then mounted on the support tube 8, an extension sleeve 30, which serves, for example, the connection to a fuel distributor not shown, the outer diameter of the filter element 19 is calibrated to the inner diameter of the extension sleeve 30, which is slightly smaller than the outer diameter of the filter element 19. As a result, the filter element 19 is pressed into the grooves 27 of the support tube 8 in the region of the fiberglass extrusion coating 25. As a result, a secure hold of the filter element in the fuel injection valve 1 is ensured even with strong temperature fluctuations. The fuel injection valve 1 can be produced by the measures according to the invention in a simple manner by the elimination of the brass ring 20 cheaper without increasing the cost of other components.

Die Erfindung ist nicht auf das dargestellte Ausführungsbeispiel beschränkt und für beliebige Bauweisen von Brennstoffeinspritzventilen 1 geeignet, z. B. für Brennstoffeinspritzventile 1 für Direkteinspritzung oder für Brennstoffeinspritzventile 1 mit Anbindung an ein Common-Rail-System. The invention is not limited to the illustrated embodiment and suitable for any construction of fuel injectors 1, z. B. for fuel injection valves 1 for direct injection or fuel injectors 1 with connection to a common rail system.

Claims (7)

  1. Fuel injection valve (1) for fuel injection systems of internal combustion engines, having a magnet coil (10), having a support tube (8) which acts as an inner pole of the magnet coil (10), and having a filter element (19), wherein the filter element (19) is fastened to an outer contour (28) of the support tube (8) of the fuel injection valve (1),
    characterized
    in that an interference fit between the filter element (19) and support tube (8) is attained through the mounting of an elongation sleeve (30) which has an inner diameter slightly smaller than an outer diameter of the filter element (19).
  2. Fuel injection valve according to Claim 1,
    characterized
    in that the outer contour (28) of the support tube (8) has grooves (27).
  3. Fuel injection valve according to Claim 2,
    characterized
    in that the grooves (27) are formed into the support tube (8) by means of turning or using a profile tool.
  4. Fuel injection valve according to one of Claims 1 to 3,
    characterized
    in that the support tube (8) has a shoulder (29) at the downstream side of the grooves (27).
  5. Fuel injection valve according to Claim 4,
    characterized
    in that the filter element (19) is supported on the shoulder (29).
  6. Fuel injection valve according to one of Claims 1 to 5,
    characterized
    in that the filter element (19) is composed of a pot-shaped filter (21) composed of a fabric material (24) and a glass fibre reinforced plastic extrusion coating (25).
  7. Method for assembling a fuel injection valve (1) for fuel injection systems of internal combustion engines, having a magnet coil (10), having a support tube (8) which acts as an inner pole of the magnet coil (10), and having a filter element (19), wherein the filter element (19) is fastened to an outer contour (28) of the support tube (8) of the fuel injection valve (1), comprising the following method steps:
    - producing a pot-shaped filter (21) from a fabric material (24);
    - extrusion-coating the filter (21) with a glass fibre reinforced plastic extrusion coating (25),
    - forming grooves (27) into the outer contour (28) of the support tube (8) of the fuel injection valve (1),
    - plugging the filter element (19) onto the outer contour (28) of the support tube (8),
    - mounting an elongation sleeve (30), the inner diameter of which is slightly smaller than an outer diameter of the filter element (19), and
    - pressing the glass fibre reinforced plastic extrusion coating (25) of the filter element (19) into the grooves (27) of the outer contour (28) of the support tube (8) through the mounting pressure of the elongation sleeve (30).
EP20040738738 2003-07-30 2004-06-19 Fuel injection valve and method for the assembly thereof Expired - Fee Related EP1651860B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003134785 DE10334785A1 (en) 2003-07-30 2003-07-30 Fuel injection valve and method for its assembly
PCT/DE2004/001289 WO2005014999A1 (en) 2003-07-30 2004-06-19 Fuel injection valve and method for the assembly thereof

Publications (2)

Publication Number Publication Date
EP1651860A1 EP1651860A1 (en) 2006-05-03
EP1651860B1 true EP1651860B1 (en) 2012-09-05

Family

ID=34088949

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20040738738 Expired - Fee Related EP1651860B1 (en) 2003-07-30 2004-06-19 Fuel injection valve and method for the assembly thereof

Country Status (5)

Country Link
US (1) US7770812B2 (en)
EP (1) EP1651860B1 (en)
JP (1) JP4709753B2 (en)
DE (1) DE10334785A1 (en)
WO (1) WO2005014999A1 (en)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007008863A1 (en) * 2005-08-26 2008-08-28 Robert Bosch Gmbh Fuel injector
DE102005040363B4 (en) 2005-08-26 2017-09-14 Robert Bosch Gmbh Fuel injector
EP1783360B1 (en) * 2005-11-02 2008-03-26 Delphi Technologies, Inc. Internal filter for a fuel injector
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
US7617991B2 (en) * 2006-03-31 2009-11-17 Delphi Technologies, Inc. Injector fuel filter with built-in orifice for flow restriction
DE102006017451A1 (en) * 2006-04-13 2007-10-18 Robert Bosch Gmbh Magnetic assembly for a solenoid valve
DE102006027614B4 (en) * 2006-06-13 2009-02-05 L'orange Gmbh Injection injector for internal combustion engines
DE102007049963A1 (en) * 2007-10-18 2009-04-23 Robert Bosch Gmbh Fuel injector
JP2009174423A (en) * 2008-01-24 2009-08-06 Hitachi Ltd Fuel injection valve
US20090256009A1 (en) * 2008-04-10 2009-10-15 Perry Robert B Protection device for a lower guide system of a fuel injector
JP4628461B2 (en) * 2008-10-24 2011-02-09 三菱電機株式会社 Fuel injection valve
US8460422B2 (en) * 2010-09-17 2013-06-11 Caterpillar Inc. Exhaust aftertreatment system, and engine service package having fuel filtering mechanism
US8413913B2 (en) * 2010-10-28 2013-04-09 International Engine Intellectual Property Company, Llc. Boundary edge filter of a unit fuel injector
DE102011089247A1 (en) * 2011-12-20 2013-06-20 Robert Bosch Gmbh Fuel injector
DE102012201940A1 (en) * 2012-02-09 2013-08-14 Robert Bosch Gmbh Valve for metering a flowing medium
EP2811152B1 (en) * 2013-06-04 2018-04-18 Continental Automotive GmbH Filter for a fluid injection valve, fluid injection valve and method for producing a filter for a fluid injection valve
DE102013225834A1 (en) * 2013-12-13 2015-06-18 Robert Bosch Gmbh Fuel injector
EP3076004B1 (en) * 2015-04-02 2018-09-12 Continental Automotive GmbH Valve assembly with a particle retainer element and fluid injection valve
LT6299B (en) * 2015-09-04 2016-08-25 UAB "Aukšto slėgio filtravimo sprendimai" High pressure fluid filter with sturdiness bars and use of the filter fuel supply system
DE102015217673A1 (en) 2015-09-15 2017-03-16 Continental Automotive Gmbh Injection device for metering a fluid and motor vehicle with such an injection device
EP3435100B1 (en) 2017-07-24 2020-04-01 TDK-Micronas GmbH Method for testing an electronic device and an interface circuit therefore
US10502112B2 (en) * 2017-09-14 2019-12-10 Vitesco Technologies USA, LLC Injector for reductant delivery unit having fluid volume reduction assembly
US10539057B2 (en) * 2017-09-14 2020-01-21 Vitesco Technologies USA, LLC Injector for reductant delivery unit having reduced fluid volume
US20190078488A1 (en) * 2017-09-14 2019-03-14 Continental Automotive Systems, Inc. Injector for reductant delivery unit having fluid volume reduction assembly
US10947880B2 (en) * 2018-02-01 2021-03-16 Continental Powertrain USA, LLC Injector for reductant delivery unit having fluid volume reduction assembly
US11098685B2 (en) * 2019-02-19 2021-08-24 Caterpillar Inc. Fuel injector assembly having external filter and method of making same
DE102019218092A1 (en) * 2019-11-22 2021-05-27 Robert Bosch Gmbh Electromagnetic actuator
DE102021205042A1 (en) * 2021-05-18 2022-11-24 Robert Bosch Gesellschaft mit beschränkter Haftung Injector with integrated filter

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6940678U (en) 1969-10-18 1970-04-30 Siemens Ag DRAWER DEVICE FOR ROD PARTS
US3779268A (en) * 1972-06-13 1973-12-18 Pennwalt Corp Automatic changeover valve for chlorine gas system
JPS62267565A (en) 1986-05-16 1987-11-20 Hitachi Ltd Structure of fuel injection valve
US5335863A (en) * 1993-05-03 1994-08-09 Siemens Automotive L.P. Filter cartridge mounting for a top-feed fuel injector
DE4325842A1 (en) * 1993-07-31 1995-02-02 Bosch Gmbh Robert Fuel injection valve
US5356079A (en) * 1993-11-23 1994-10-18 Siemens Automotive L.P. Fuel injector snap-lock filter-retainer
US5641126A (en) * 1995-05-19 1997-06-24 Siemens Automotive Corporation Fuel injection systems with compact filter mountings
US6199775B1 (en) * 2000-02-23 2001-03-13 Siemens Automotive Corporation Fuel injector filter unit having a composite housing
US6676044B2 (en) * 2000-04-07 2004-01-13 Siemens Automotive Corporation Modular fuel injector and method of assembling the modular fuel injector
US6446885B1 (en) * 2001-01-16 2002-09-10 Robert Bosch Corporation Secondary filter assembly for fuel injector
DE10109411A1 (en) 2001-02-28 2002-09-05 Bosch Gmbh Robert Fuel injector

Also Published As

Publication number Publication date
WO2005014999A1 (en) 2005-02-17
DE10334785A1 (en) 2005-02-24
JP4709753B2 (en) 2011-06-22
US7770812B2 (en) 2010-08-10
EP1651860A1 (en) 2006-05-03
JP2007500301A (en) 2007-01-11
US20070095745A1 (en) 2007-05-03

Similar Documents

Publication Publication Date Title
EP1651860B1 (en) Fuel injection valve and method for the assembly thereof
EP1377747B1 (en) Fuel injection valve with a filter bush
DE10122353B4 (en) Fuel injector
EP1114249B1 (en) Fuel injection valve
EP1364115B1 (en) Fuel injection valve
DE102009000183A1 (en) Fuel injection valve for fuel injection systems of internal combustion engines, particularly for direct injection of fuel in combustion chamber of internal combustion engine, has actuator and flow choke provided in fuel supply
EP1370765B1 (en) Fuel injection valve
WO2009053219A1 (en) Fuel injection valve
EP1797313B1 (en) Fuel injection valve
EP2884091B1 (en) Fuel injector valve
DE102004037541B4 (en) Fuel injector
EP1062422A1 (en) Method for mounting a valve module of a fuel injector
EP2212543B1 (en) Fuel injection valve
EP1649159B1 (en) Fuel injection valve
EP1658429B1 (en) Fuel-injection valve
EP1576279B1 (en) Fuel injection valve
EP1328725B1 (en) Fuel injection valve
EP1520982A2 (en) Fuel Injector
EP2201241B1 (en) Electromagnetically driven fuel injection valve
EP1308618B1 (en) Fuel injection valve
EP0890732A2 (en) Electromagnetically actuatable valve
DE10050056A1 (en) Fuel injector
DE102007049966A1 (en) Electromagnetically actuatable valve for fuel injection system of mixture-compressing, spark-ignited internal combustion engine, has plastic parts arranged on valve seat carrier and connecting port, where plastic parts are formed as spacers
DE102015226541A1 (en) Fuel injector

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20060228

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT

DAX Request for extension of the european patent (deleted)
RBV Designated contracting states (corrected)

Designated state(s): DE FR GB IT

RBV Designated contracting states (corrected)

Designated state(s): DE FR GB IT

17Q First examination report despatched

Effective date: 20100318

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RBV Designated contracting states (corrected)

Designated state(s): DE FR GB IT

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502004013734

Country of ref document: DE

Effective date: 20121031

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20130606

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502004013734

Country of ref document: DE

Effective date: 20130606

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20140620

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20140625

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20140617

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20150804

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150619

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20150619

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20160229

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150619

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150630

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502004013734

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170103