EP1402172B1 - Fuel-injection valve - Google Patents

Fuel-injection valve Download PDF

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Publication number
EP1402172B1
EP1402172B1 EP02745088A EP02745088A EP1402172B1 EP 1402172 B1 EP1402172 B1 EP 1402172B1 EP 02745088 A EP02745088 A EP 02745088A EP 02745088 A EP02745088 A EP 02745088A EP 1402172 B1 EP1402172 B1 EP 1402172B1
Authority
EP
European Patent Office
Prior art keywords
filter element
fuel injection
injection valve
sleeve
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
EP02745088A
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German (de)
French (fr)
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EP1402172A1 (en
Inventor
Ferdinand Reiter
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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Filing date
Publication date
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Publication of EP1402172A1 publication Critical patent/EP1402172A1/en
Application granted granted Critical
Publication of EP1402172B1 publication Critical patent/EP1402172B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
    • F02M51/0685—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 and the valve being allowed to move relatively to each other or not being attached to each other
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/02—Fuel-injection apparatus having means for reducing wear
    • 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
    • F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
    • 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
    • F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
    • F02M2200/306—Fuel-injection apparatus having mechanical parts, the movement of which is damped using mechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0614—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature
    • 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
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
    • F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies

Definitions

  • the invention is based on a fuel injector according to the genus of the main claim.
  • valve needle a in or has filter element mounted on it.
  • the Filter element has the function of all particles and Contamination upstream of the sealing seat inside the fuel injector from the sealing seat and thus blockages or leaks at the sealing seat avoid.
  • the filter element is in the form of a Sieve stocking formed, the valve needle at least partially enveloped.
  • a disadvantage of the known from DE 44 21 881 A1 Fuel injector in particular is that the Manufacture and assembly of a stocking-shaped Filter element is complex and therefore expensive. By this is due to the large surface of the filter element susceptible to strong valve needle movement Twists and shifts when operating the Fuel injector.
  • the fuel injector according to the invention with the has characteristic features of the main claim in contrast, the advantage that in addition to a possibly in the fuel supply arranged filter element another Filter element is provided, which downstream of the Anchor is arranged and offers an easy way either a second, finer filtering of the flowing through Fuel in addition to filtering by the first Enable filter element or the first filter element with the advantage of the shorter overall length of the Replace fuel injector.
  • the second Filter element in a simple manner from a mesh screen or by making openings in an annular plate can be produced.
  • the openings are varied Way, for example by means of laser drilling, etching, eroding or punching.
  • the filter element is optional loosely in the sleeve arranged downstream of the armature can be inserted or braced with this or can be welded to fix the filter element.
  • a fuel injector 1 shown in FIG. 1 is in the form of a fuel injector 1 for Fuel injection systems from mixture-compressing, spark-ignition internal combustion engines.
  • the Fuel injection valve 1 is particularly suitable for not directly injecting fuel into one Shown combustion chamber of an internal combustion engine.
  • the fuel injector 1 consists of a Nozzle body 2, in which a valve needle 3 is arranged.
  • the valve needle 3 is operatively connected to a Valve closing body 4 with one on one Valve seat body 5 arranged valve seat surface 6 into one Sealing seat interacts.
  • the fuel injector 1 in the exemplary embodiment it is an inward opening fuel injector 1, which has a Spray opening 7 has.
  • the nozzle body 2 is through a Seal 8 against an outer pole 9 of a magnet coil 10 sealed.
  • the magnet coil 10 is in a coil housing 11 encapsulated and wound on a bobbin 12, which bears against an inner pole 13 of the magnet coil 10.
  • the Inner pole 13 and outer pole 9 are through a constriction 26 separated from each other and not by one another ferromagnetic connecting member 29 connected.
  • the Solenoid 10 is connected via a line 19 from one to the other an electrical plug contact 17 feedable electrical Current excited.
  • the plug contact 17 is one Surround plastic sheath 18 on the inner pole 13th can be
  • the valve needle 3 is in a valve needle guide 14 led, which is disc-shaped.
  • a paired shim 15 is used for stroke adjustment the other side of the shim 15 is a Anchor 20.
  • This is non-positively via a flange 21 with the valve needle 3 in connection, which by a Weld 22 with the. Flange 21 is connected.
  • On the Flange 21 is supported by a return spring 23, which in the present design of the fuel injector 1 is preloaded by a sleeve 24.
  • In the Valve needle guide 14, in armature 20 and on valve seat body 5 run fuel channels 30a to 30c, which the fuel, which is supplied via a central fuel supply 16 and a first filter element 25a is filtered for Conduct spray opening 7.
  • the fuel injector 1 is no further by a seal 28 against one fuel line shown sealed.
  • a damping element designed as an O-ring 32, which consists of an elastomer material, arranged. It lies on a shoulder-like widening 36 of a preferably deep-drawn sleeve 31, which via a weld 33 with the valve needle 3 is connected.
  • a second filter element 25b which is in the form of a flat filter 25 is formed and, for example, from mesh or as Ronde with many small openings can exist.
  • Flow-through openings 37 are formed in the sleeve 31 are covered by the second filter element 25b, whereby the valve seat from contamination by coarse particles in the Fuel is protected and malfunctioning Fuel injector 1 can be avoided.
  • FIG. 2 A more detailed description and description of the Measures according to the invention is the description of FIG. 2 refer to.
  • Fig. 2 shows an excerpted sectional view enlarged view of area II in FIG. 1.
  • valve needle 3 A part of the valve needle 3 is shown, which is thus welded flange 21, the sleeve 31 and in the Recess 35 of the armature 20 inserted according to the invention configured second filter element 25b.
  • the second filter element 25b is arranged so that it the flow openings 37 in the cup-shaped sleeve 31 covers. Due to the shape and fit of the armature 20 ensures that the fuel is obtained exclusively from the Fuel channels 30a in the armature and the flow openings 37 can flow in the sleeve 31 towards the sealing seat. Thereby can be inserted by means of the second sleeve 31 Filter element 25b in addition to that in the central Fuel supply 16 arranged first filter element 25a Coarse particles are filtered out in the fuel, so that the Sealing seat is protected from contamination, which too Malfunction of fuel injector 1 can.
  • the second filter element 25b is preferably in shape a flat filter 25b formed from a sieve fabric can be made.
  • the second filter element 25b can also made as a blank from a thin sheet and with round or elongated openings through which the Fuel flows, are provided.
  • the openings can punched, eroded, etched or laser drilled.
  • the openings are preferably smaller than the openings of the upstream first filter element 25a, whereby the Effectiveness of fuel filtering is increased.
  • the second filter element 25b can be used in various ways the sleeve 31 can be fixed to prevent slipping and subsequent transfers of dirt particles into the Avoid fuel flow.
  • the second filter element 25b dimensioned so that its Diameter corresponds to the inside width of the sleeve 31, can it is inserted into the pot-shaped sleeve 31 without attachment his.
  • the second filter element 25b is somewhat larger dimensioned, it can be pressed into the radial pressure Sleeve 31 be pressed.
  • the second filter element 25b is slightly smaller than the sleeve 31.
  • the second filter element 25b can be used Laser stitching or spot welding with at least one spot be fixed to the sleeve 31.
  • the shape differs from the shape of the flat filter 25b Form, for example a plate-shaped or curved Filter element 25b, an axial bracing of the Filter element 25b between the armature 20 and the sleeve 31 in Be considered. This is particularly useful because the armature 20 with the sleeve 31 for the purpose of Damping is definitely tensioned.

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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 Hauptanspruchs.The invention is based on a fuel injector according to the genus of the main claim.

Beispielsweise ist aus der DE 44 21 881 A1 ein Brennstoffeinspritzventil bekannt, dessen Ventilnadel ein in bzw. an ihr montiertes Filterelement aufweist. Das Filterelement hat die Funktion, alle Partikel und Verunreinigungen stromaufwärts des Dichtsitzes im Inneren des Brennstoffeinspritzventils vom Dichtsitz fernzuhalten und damit Verstopfungen bzw. Undichtigkeiten am Dichtsitz zu vermeiden. Das Filterelement ist dabei in Form eines Siebstrumpfes ausgebildet, der die Ventilnadel zumindest teilweise einhüllt.For example, from DE 44 21 881 A1 Fuel injector known, the valve needle a in or has filter element mounted on it. The Filter element has the function of all particles and Contamination upstream of the sealing seat inside the fuel injector from the sealing seat and thus blockages or leaks at the sealing seat avoid. The filter element is in the form of a Sieve stocking formed, the valve needle at least partially enveloped.

Nachteilig bei dem aus der DE 44 21 881 A1 bekannten Brennstoffeinspritzventil ist insbesondere, daß die Herstellung und die Montage eines Strumpfförmigen Filterelements aufwendig und damit kostenintensiv ist. Durch die große Oberfläche des Filterelements ist dieses bedingt durch die starke Ventilnadelbewegung anfällig gegen Verdrehungen und Verschiebungen beim Betrieb des Brennstoffeinspritzventils. A disadvantage of the known from DE 44 21 881 A1 Fuel injector in particular is that the Manufacture and assembly of a stocking-shaped Filter element is complex and therefore expensive. By this is due to the large surface of the filter element susceptible to strong valve needle movement Twists and shifts when operating the Fuel injector.

Vorteile der ErfindungAdvantages of the invention

Das erfindungsgemäße Brennstoffeinspritzventil mit den kennzeichnenden Merkmalen des Hauptanspruchs hat demgegenüber den Vorteil, daß zusätzlich zu einem ggf. in der Brennstoffzufuhr angeordneten Filterelement ein weiteres Filterelement vorgesehen ist, welches abströmseitig des Ankers angeordnet ist und eine einfache Möglichkeit bietet, entweder eine zweite, feinere Filterung des durchströmenden Brennstoffes zusätzlich zur Filterung durch das erste Filterelement zu ermöglichen oder das erste Filterelement mit dem Vorteil der kürzeren Baulänge des Brennstoffeinspritzventils zu ersetzen.The fuel injector according to the invention with the has characteristic features of the main claim in contrast, the advantage that in addition to a possibly in the fuel supply arranged filter element another Filter element is provided, which downstream of the Anchor is arranged and offers an easy way either a second, finer filtering of the flowing through Fuel in addition to filtering by the first Enable filter element or the first filter element with the advantage of the shorter overall length of the Replace fuel injector.

Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterentwicklungen des im Hauptanspruch angegebenen Brennstoffeinspritzventils möglich.By the measures listed in the subclaims advantageous developments of the main claim specified fuel injector possible.

Von Vorteil ist dabei insbesondere, daß das zweite Filterelement in einfacher Weise aus einem Siebgeflecht oder mittels Einbringen von Öffnungen in ein ringförmiges Blech herstellbar ist. Die Öffnungen sind dabei in vielfältiger Weise, beispielsweise mittels Laserbohren, Ätzen, Erodieren oder Stanzen, herstellbar.It is particularly advantageous that the second Filter element in a simple manner from a mesh screen or by making openings in an annular plate can be produced. The openings are varied Way, for example by means of laser drilling, etching, eroding or punching.

Von Vorteil ist außerdem, daß das Filterelement wahlweise lose in die abströmseitig des Ankers angeordnete Hülse eingelegt werden kann oder mit dieser verspannt oder verschweißt werden kann, um das Filterelement zu fixieren.Another advantage is that the filter element is optional loosely in the sleeve arranged downstream of the armature can be inserted or braced with this or can be welded to fix the filter element.

Eine vorteilhafte weitere Möglichkeit der Fixierung bietet eine konkave, konvexe oder tellerartige . Form des Filterelements, da in diesem Fall eine Fixierung durch axiale Verspannung zwischen dem Anker und der Hülse, die zu Dämpfungszwecken gegeneinander verspannt sein müssen, ohne weitere Fixierungsmaßnahmen und mit einwandfreier Paßform ermöglicht wird.An advantageous further possibility of fixation offers a concave, convex or plate-like. Form of Filter element, because in this case a fixation by axial tension between the armature and the sleeve leading to Damping purposes must be braced against each other without further fixation measures and with a perfect fit is made possible.

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 erfindungsgemäßen Brennstoffeinspritzventils in einer Gesamtansicht, und
Fig. 2
einen schematischen Schnitt durch das in Fig. 1 dargestellte Ausführungsbeispiel des erfindungsgemäßen Brennstoffeinspritzventils im Bereich II in Fig. 1.
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 fuel injector according to the invention in an overall view, and
Fig. 2
2 shows a schematic section through the exemplary embodiment of the fuel injector according to the invention shown in FIG. 1 in area II in FIG. 1.

Beschreibung des AusführungsbeispielsDescription of the embodiment

Ein in Fig. 1 dargestelltes Brennstoffeinspritzventil 1 ist in der Form eines Brennstoffeinspritzventils 1 für Brennstoffeinspritzanlagen von gemischverdichtenden, fremdgezündeten Brennkraftmaschinen ausgeführt. Das Brennstoffeinspritzventil 1 eignet sich insbesondere zum direkten Einspritzen von Brennstoff in einen nicht dargestellten Brennraum einer Brennkraftmaschine.A fuel injector 1 shown in FIG. 1 is in the form of a fuel injector 1 for Fuel injection systems from mixture-compressing, spark-ignition internal combustion engines. The Fuel injection valve 1 is particularly suitable for not directly injecting fuel into one Shown combustion chamber of an internal combustion engine.

Das Brennstoffeinspritzventil 1 besteht aus einem Düsenkörper 2, in welchem eine Ventilnadel 3 angeordnet ist. Die Ventilnadel 3 steht in Wirkverbindung mit einem Ventilschließkörper 4, der mit einer auf einem Ventilsitzkörper 5 angeordneten Ventilsitzfläche 6 zu einem Dichtsitz zusammenwirkt. Bei dem Brennstoffeinspritzventil 1 handelt es sich im Ausführungsbeispiel um ein nach innen öffnendes Brennstoffeinspritzventil 1, welches über eine Abspritzöffnung 7 verfügt. Der Düsenkörper 2 ist durch eine Dichtung 8 gegen einen Außenpol 9 einer Magnetspule 10 abgedichtet. Die Magnetspule 10 ist in einem Spulengehäuse 11 gekapselt und auf einen Spulenträger 12 gewickelt, welcher an einem Innenpol 13 der Magnetspule 10 anliegt. Der Innenpol 13 und der Außenpol 9 sind durch eine Verengung 26 voneinander getrennt und miteinander durch ein nicht ferromagnetisches Verbindungsbauteil 29 verbunden. Die Magnetspule 10 wird über eine Leitung 19 von einem über einen elektrischen Steckkontakt 17 zuführbaren elektrischen Strom erregt. Der Steckkontakt 17 ist von einer Kunststoffummantelung 18 umgeben, die am Innenpol 13 angespritzt sein kann.The fuel injector 1 consists of a Nozzle body 2, in which a valve needle 3 is arranged. The valve needle 3 is operatively connected to a Valve closing body 4 with one on one Valve seat body 5 arranged valve seat surface 6 into one Sealing seat interacts. In the fuel injector 1 in the exemplary embodiment it is an inward opening fuel injector 1, which has a Spray opening 7 has. The nozzle body 2 is through a Seal 8 against an outer pole 9 of a magnet coil 10 sealed. The magnet coil 10 is in a coil housing 11 encapsulated and wound on a bobbin 12, which bears against an inner pole 13 of the magnet coil 10. The Inner pole 13 and outer pole 9 are through a constriction 26 separated from each other and not by one another ferromagnetic connecting member 29 connected. The Solenoid 10 is connected via a line 19 from one to the other an electrical plug contact 17 feedable electrical Current excited. The plug contact 17 is one Surround plastic sheath 18 on the inner pole 13th can be molded.

Die Ventilnadel 3 ist in einer Ventilnadelführung 14 geführt, welche scheibenförmig ausgeführt ist. Zur Hubeinstellung dient eine zugepaarte Einstellscheibe 15. An der anderen Seite der Einstellscheibe 15 befindet sich ein Anker 20. Dieser steht über einen Flansch 21 kraftschlüssig mit der Ventilnadel 3 in Verbindung, welche durch eine Schweißnaht 22 mit dem. Flansch 21 verbunden ist. Auf dem Flansch 21 stützt sich eine Rückstellfeder 23 ab, welche in der vorliegenden Bauform des Brennstoffeinspritzventils 1 durch eine Hülse 24 auf Vorspannung gebracht wird. In der Ventilnadelführung 14, im Anker 20 und am Ventilsitzkörper 5 verlaufen Brennstoffkanäle 30a bis 30c, die den Brennstoff, welcher über eine zentrale Brennstoffzufuhr 16 zugeführt und ein erstes Filterelement 25a gefiltert wird, zur Abspritzöffnung 7 leiten. Das Brennstoffeinspritzventil 1 ist durch eine Dichtung 28 gegen eine nicht weiter dargestellte Brennstoffleitung abgedichtet.The valve needle 3 is in a valve needle guide 14 led, which is disc-shaped. to A paired shim 15 is used for stroke adjustment the other side of the shim 15 is a Anchor 20. This is non-positively via a flange 21 with the valve needle 3 in connection, which by a Weld 22 with the. Flange 21 is connected. On the Flange 21 is supported by a return spring 23, which in the present design of the fuel injector 1 is preloaded by a sleeve 24. In the Valve needle guide 14, in armature 20 and on valve seat body 5 run fuel channels 30a to 30c, which the fuel, which is supplied via a central fuel supply 16 and a first filter element 25a is filtered for Conduct spray opening 7. The fuel injector 1 is no further by a seal 28 against one fuel line shown sealed.

An einer abströmseitigen Seite 34 des Ankers 20 ist in einer Ausnehmung 35 ein als O-Ring ausgebildetes Dämpfungselement 32, welches aus einem Elastomerwerkstoff besteht, angeordnet. Es liegt auf einer schulterartigen Verbreiterung 36 einer vorzugsweise tiefgezogenen Hülse 31 auf, welche über eine Schweißnaht 33 kraftschlüssig mit der Ventilnadel 3 verbunden ist.On an outflow side 34 of the armature 20 is in a Recess 35 is a damping element designed as an O-ring 32, which consists of an elastomer material, arranged. It lies on a shoulder-like widening 36 of a preferably deep-drawn sleeve 31, which via a weld 33 with the valve needle 3 is connected.

In der tiefgezogenen Hülse 31 ist ein zweites Filterelement 25b angeordnet, welches in Form eines Flachfilters 25 ausgebildet ist und beispielsweise aus Siebgewebe oder als Ronde mit vielen kleinen Öffnungen bestehen kann. In the deep-drawn sleeve 31 there is a second filter element 25b, which is in the form of a flat filter 25 is formed and, for example, from mesh or as Ronde with many small openings can exist.

In der Hülse 31 sind Durchströmöffnungen 37 ausgebildet, die durch das zweite Filterelement 25b abgedeckt sind, wodurch der Ventilsitz vor Verschmutzung durch Grobpartikel im Brennstoff geschützt ist und Fehlfunktionen des Brennstoffeinspritzventils 1 vermieden werden.Flow-through openings 37 are formed in the sleeve 31 are covered by the second filter element 25b, whereby the valve seat from contamination by coarse particles in the Fuel is protected and malfunctioning Fuel injector 1 can be avoided.

Eine detailliertere Darstellung und Beschreibung der erfindungsgemäßen Maßnahmen ist der Beschreibung zu Fig. 2 zu entnehmen.A more detailed description and description of the Measures according to the invention is the description of FIG. 2 refer to.

Im Ruhezustand des Brennstoffeinspritzventils 1 wird der Anker 20 von der Rückstellfeder 23 entgegen seiner Hubrichtung so' beaufschlagt, daß der Ventilschließkörper 4 am Ventilsitz 6 in dichtender Anlage gehalten wird. Bei Erregung der Magnetspule 10 baut diese ein Magnetfeld auf, welches den Anker 20 entgegen der Federkraft der Rückstellfeder 23 in Hubrichtung bewegt, wobei der Hub durch einen in der Ruhestellung zwischen dem Innenpol 12 und dem Anker 20 befindlichen Arbeitsspalt 27 vorgegeben ist. Der Anker 20 nimmt den Flansch 21, welcher mit der Ventilnadel 3 verschweißt ist, ebenfalls in Hubrichtung mit. Der mit der Ventilnadel 3 in Verbindung stehende Ventilschließkörper 4 hebt von der Ventilsitzfläche 6 ab und der Brennstoff wird durch die Abspritzöffnung 7 abgespritzt.In the idle state of the fuel injector 1 Armature 20 from the return spring 23 against it Stroke direction 'so acted that the valve closing body 4th is held at the valve seat 6 in a sealing system. at Excitation of the magnetic coil 10 builds up a magnetic field, which the armature 20 against the spring force of Return spring 23 moves in the stroke direction, the stroke by one in the rest position between the inner pole 12 and the Anchor 20 located working gap 27 is specified. The Armature 20 takes flange 21, which is connected to valve needle 3 is welded, also in the stroke direction. The one with the Valve needle 3 connected valve closing body 4 lifts off the valve seat 6 and the fuel is hosed through the spray opening 7.

Wird der Spulenstrom abgeschaltet, fällt der Anker 20 nach genügendem Abbau des Magnetfeldes durch den Druck der Rückstellfeder 23 vom Innenpol 13 ab, wodurch sich der mit der Ventilnadel 3 in Verbindung stehende Flansch 21 entgegen der Hubrichtung bewegt. Die Ventilnadel 3 wird dadurch in die gleiche Richtung bewegt, wodurch der Ventilschließkörper 4 auf der Ventilsitzfläche 6 aufsetzt und das Brennstoffeinspritzventil 1 geschlossen wird.If the coil current is switched off, the armature 20 falls sufficient degradation of the magnetic field by the pressure of the Return spring 23 from the inner pole 13, whereby the the valve needle 3 opposite flange 21 the stroke direction moves. The valve needle 3 is thereby in moves in the same direction, causing the valve closing body 4 sits on the valve seat 6 and that Fuel injector 1 is closed.

Fig. 2 zeigt in einer auszugsweisen Schnittdarstellung eine vergrößerte Ansicht des Bereichs II in Fig. 1.Fig. 2 shows an excerpted sectional view enlarged view of area II in FIG. 1.

Dargestellt ist ein Teil der Ventilnadel 3, der damit verschweißte Flansch 21, die Hülse 31 sowie das in die Ausnehmung 35 des Ankers 20 eingelegte erfindungsgemäß ausgestaltete zweite Filterelement 25b.A part of the valve needle 3 is shown, which is thus welded flange 21, the sleeve 31 and in the Recess 35 of the armature 20 inserted according to the invention configured second filter element 25b.

Bei der Montage des aus Anker 20 und Ventilnadel 3 bestehenden Bauteils wird zunächst der Flansch 21 mit der Ventilnadel 3 über die Schweißnaht 22 verschweißt. Das Dämpfungselement 32 wird in die in der abströmseitigen Stirnseite 34 des Ankers 20 ausgebildete Ausnehmung 35 eingelegt und der Anker 20 mit dem eingelegten Dämpfungselement 32 auf die Ventilnadel 3 aufgesteckt. Anschließend wird das. zweite Filterelement 25b in die gestuft ausgeführte Hülse 31, die vorzugsweise durch Tiefziehen herstellbar ist und zur. Brennstoffleitung vorzugsweise gestanzte Durchströmöffnungen 37 aufweist, eingelegt. Die Hülse 31 wird dann gemeinsam mit dem zweiten Filterelement 25b auf die Ventilnadel 3 aufgeschoben und ebenfalls mit der Ventilnadel 3 über eine Schweißnaht 33 verbunden.When assembling the armature 20 and valve needle 3 existing component is first the flange 21 with the Valve needle 3 welded over the weld 22. The Damping element 32 is in the downstream Front end 34 of armature 20 is formed in recess 35 inserted and the anchor 20 with the inserted Damping element 32 plugged onto the valve needle 3. The second filter element 25b is then inserted into the stepped sleeve 31, preferably by Thermoforming can be produced and. fuel line preferably has punched flow openings 37, inserted. The sleeve 31 is then together with the second Filter element 25b pushed onto the valve needle 3 and also with the valve needle 3 via a weld seam 33 connected.

Das zweite Filterelement 25b ist dabei so angeordnet, daß es die Durchströmöffnungen 37 in der topfförmigen Hülse 31 abdeckt. Durch die Form und Passung des Ankers 20 wird dabei sichergestellt, daß der Brennstoff ausschließlich durch die Brennstoffkanäle 30a im Anker und die Durchströmöffnungen 37 in der Hülse 31 in Richtung Dichtsitz strömen kann. Dadurch können mittels des in. die Hülse 31 eingelegten zweiten Filterelements 25b zusätzlich zu dem in der zentralen Brennstoffzufuhr 16 angeordneten ersten Filterelement 25a Grobpartikel im Brennstoff ausgefiltert werden, so daß der Dichtsitz vor Verunreinigungen geschützt ist, welche zu Fehlfunktionen des Brennstoffeinspritzventils 1 führen können.The second filter element 25b is arranged so that it the flow openings 37 in the cup-shaped sleeve 31 covers. Due to the shape and fit of the armature 20 ensures that the fuel is obtained exclusively from the Fuel channels 30a in the armature and the flow openings 37 can flow in the sleeve 31 towards the sealing seat. Thereby can be inserted by means of the second sleeve 31 Filter element 25b in addition to that in the central Fuel supply 16 arranged first filter element 25a Coarse particles are filtered out in the fuel, so that the Sealing seat is protected from contamination, which too Malfunction of fuel injector 1 can.

Das zweite Filterelement 25b ist dabei vorzugsweise in Form eines Flachfilters 25b ausgebildet, der aus einem Siebgewebe hergestellt sein kann. Das zweite Filterelement 25b kann auch als Ronde aus einem dünnen Blech hergestellt und mit runden oder länglichen Öffnungen, durch welche der Brennstoff strömt, versehen werden. Die Öffnungen können dabei gestanzt, erodiert, geätzt oder lasergebohrt werden. Die Öffnungen sind vorzugsweise kleiner als die Öffnungen des vorgeschalteten ersten Filterelements 25a, wodurch die Effektivität der Brennstoffilterung erhöht wird.The second filter element 25b is preferably in shape a flat filter 25b formed from a sieve fabric can be made. The second filter element 25b can also made as a blank from a thin sheet and with round or elongated openings through which the Fuel flows, are provided. The openings can punched, eroded, etched or laser drilled. The openings are preferably smaller than the openings of the upstream first filter element 25a, whereby the Effectiveness of fuel filtering is increased.

Das zweite Filterelement 25b kann auf verschiedene Arten in der Hülse 31 fixiert werden, um ein Verrutschen und nachfolgende Übertritte von Schmutzpartikeln in den Brennstoffstrom zu vermeiden.The second filter element 25b can be used in various ways the sleeve 31 can be fixed to prevent slipping and subsequent transfers of dirt particles into the Avoid fuel flow.

Ist das zweite Filterelement 25b so dimensioniert, daß sein Durchmesser der lichten Weite der Hülse 31 entspricht, kann es ohne Befestigung in die topfförmige Hülse 31 eingelegt sein. Ist das zweite Filterelement 25b etwas größer dimensioniert, kann es mittels radialer Pressung in die Hülse 31 eingepreßt sein.Is the second filter element 25b dimensioned so that its Diameter corresponds to the inside width of the sleeve 31, can it is inserted into the pot-shaped sleeve 31 without attachment his. The second filter element 25b is somewhat larger dimensioned, it can be pressed into the radial pressure Sleeve 31 be pressed.

Eine einfachere Montage ist allerdings möglich, wenn das zweite Filterelement 25b etwas kleiner als die Hülse 31 ist. In diesem Fall kann das zweite Filterelement 25b mittels Laserheftens oder Punktschweißens mit zumindest einem Punkt an der Hülse 31 fixiert werden.A simpler assembly is possible, however, if that second filter element 25b is slightly smaller than the sleeve 31. In this case, the second filter element 25b can be used Laser stitching or spot welding with at least one spot be fixed to the sleeve 31.

Bei einer von der Form des Flachfilters 25b abweichenden Form, beispielsweise eines tellerförmigen oder gewölbten Filterelements 25b, kann auch eine axiale Verspannung des Filterelements 25b zwischen dem Anker 20 und der Hülse 31 in Erwägung gezogen werden. Dies bietet sich vor allem deshalb an, weil der Anker 20 mit der Hülse 31 zum Zweck der Dämpfung auf jeden Fall verspannt wird.If the shape differs from the shape of the flat filter 25b Form, for example a plate-shaped or curved Filter element 25b, an axial bracing of the Filter element 25b between the armature 20 and the sleeve 31 in Be considered. This is particularly useful because the armature 20 with the sleeve 31 for the purpose of Damping is definitely tensioned.

Die Erfindung ist nicht auf die dargestellten Ausführungsbeispiele beschränkt und z. B. auch für nach außen öffnende Brennstoffeinspritzventile 1 oder andere Ankerformen, beispielsweise Flachanker, geeignet.The invention is not shown on the Embodiments limited and z. B. also for after externally opening fuel injection valves 1 or others Anchor shapes, for example flat anchors, are suitable.

Claims (12)

  1. Fuel injection valve (1) for fuel injection systems of internal combustion engines having a valve needle (3) which interacts with a valve seat face (6) to form a sealed seat, an armature (20) which acts on the valve needle (3), and a filter element (25b), characterized in that the armature (20) is axially moveable on the valve needle (3) and is damped, by means of a damping element (32) which is arranged in a recess (35) in an outflow-end side (34) of the armature (20), with respect to a pot-shaped sleeve (31) which is arranged downstream of the armature (20) and is connected in a positively locking fashion to the valve needle (3), and in that the filter element (25b) is arranged downstream of the armature (20) in the pot-shaped sleeve (31).
  2. Fuel injection valve according to Claim 1, characterized in that the filter element (25b) is embodied as a flat filter.
  3. Fuel injection valve according to Claim 1 or 2, characterized in that the filter element (25b) is manufactured from sieve fabric.
  4. Fuel injection valve according to Claim 1 or 2, characterized in that the filter element (25b) is embodied as a circular element with a plurality of openings.
  5. Fuel injection valve according to Claim 4, characterized in that the openings of the filter element (25b) are round or elongate.
  6. Fuel injection valve according to Claim 4 or 5, characterized in that the openings are manufactured by punching, erosion, etching or laser drilling.
  7. Fuel injection valve according to one of Claims 1 to 6, characterized in that the filter element (26) is inserted loosely in the sleeve.
  8. Fuel injection valve according to one of Claims 1 to 6, characterized in that the filter element (26) is pressed radially in the sleeve (31).
  9. Fuel injection valve according to one of Claims 1 to 6, characterized in that the filter element (26) is secured in the sleeve (31) by means of welding.
  10. Fuel injection valve according to one of Claims 1 to 9, characterized in that the filter element (26) is shaped in such a way that it can be braced axially between the armature (20) and the sleeve (31).
  11. Fuel injection valve according to one of Claims 1 to 10, characterized in that the sleeve (31) has throughflow openings (37) which are covered by the filter element (26).
  12. Fuel injection valve according to one of Claims 1 to 11, characterized in that the openings in the filter element (25b) which is arranged in the pot-shaped sleeve (31) are smaller than the openings in a filter element (25a) which is arranged in a central fuel supply (16).
EP02745088A 2001-06-22 2002-05-25 Fuel-injection valve Expired - Lifetime EP1402172B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10130205A DE10130205A1 (en) 2001-06-22 2001-06-22 Fuel injector
DE10130205 2001-06-22
PCT/DE2002/001927 WO2003001051A1 (en) 2001-06-22 2002-05-25 Fuel-injection valve

Publications (2)

Publication Number Publication Date
EP1402172A1 EP1402172A1 (en) 2004-03-31
EP1402172B1 true EP1402172B1 (en) 2004-11-17

Family

ID=7689115

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02745088A Expired - Lifetime EP1402172B1 (en) 2001-06-22 2002-05-25 Fuel-injection valve

Country Status (6)

Country Link
US (1) US6994281B2 (en)
EP (1) EP1402172B1 (en)
JP (1) JP4008875B2 (en)
KR (1) KR20030036712A (en)
DE (2) DE10130205A1 (en)
WO (1) WO2003001051A1 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10326343A1 (en) * 2003-06-11 2004-12-30 Robert Bosch Gmbh Fuel injection valve for internal combustion engines with valve needle, actuating valve stop coacting with valve seat, with armature actuating valve needle, on which it can slide, with its motion damped by elastomer damper
DE102004009631A1 (en) * 2004-02-27 2005-09-15 Robert Bosch Gmbh Fuel injection valve especially for direct injecting of fuel into combustion chamber of internal combustion engine has magnetic support ring installed between armature and component fixed to housing, especially nozzle body
DE102005019837A1 (en) * 2005-04-28 2006-11-02 Robert Bosch Gmbh Fuel injection valve for e.g. fuel injection systems of internal combustion engines has inlet port and nozzle member, which are produced as deep-drawn components while being fixed to magnetic circuit element
TW200902008A (en) 2007-05-10 2009-01-16 Smithkline Beecham Corp Quinoxaline derivatives as PI3 kinase inhibitors
JP5394298B2 (en) * 2010-03-26 2014-01-22 株式会社ケーヒン Electromagnetic fuel injection valve
US8460422B2 (en) 2010-09-17 2013-06-11 Caterpillar Inc. Exhaust aftertreatment system, and engine service package having fuel filtering mechanism
KR101042596B1 (en) * 2010-10-19 2011-06-20 윤창요 Korean teaching tool
EP2597296B1 (en) * 2011-11-23 2014-10-29 Continental Automotive GmbH Valve assembly for an injection valve and injection valve
DE102012202253A1 (en) 2012-02-15 2013-08-22 Robert Bosch Gmbh Fuel injector
JP5857952B2 (en) 2012-12-26 2016-02-10 株式会社デンソー Fuel injection valve
DE102013206600B4 (en) 2013-04-12 2015-08-06 Continental Automotive Gmbh Injection system for injecting fuel into an internal combustion engine and control method for such an injection system
DE102013207555B3 (en) 2013-04-25 2014-10-09 Continental Automotive Gmbh Method for injection quantity adaptation
EP2796703B1 (en) * 2013-04-26 2016-07-20 Continental Automotive GmbH Valve assembly for an injection valve and injection valve
EP2860386A1 (en) * 2013-10-10 2015-04-15 Continental Automotive GmbH Injector for a combustion engine
EP3076004B1 (en) * 2015-04-02 2018-09-12 Continental Automotive GmbH Valve assembly with a particle retainer element and fluid injection valve
EP3267026B1 (en) * 2016-07-08 2019-05-29 Continental Automotive GmbH Valve assembly for an injection valve and injection valve
GB202001710D0 (en) * 2020-02-07 2020-03-25 Delphi Automotive Systems Lux Fuel injector
CN114811067A (en) * 2022-05-07 2022-07-29 江苏亿德隆石油机械有限公司 Manual throttle valve with filtering capability

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5190223A (en) * 1988-10-10 1993-03-02 Siemens Automotive L.P. Electromagnetic fuel injector with cartridge embodiment
JPH04200710A (en) 1990-11-30 1992-07-21 Toyobo Co Ltd Filter device
JPH0510221A (en) * 1991-07-03 1993-01-19 Nippondenso Co Ltd Solenoid fuel injection valve
US5238192A (en) * 1991-12-18 1993-08-24 Siemens Automotive L.P. Filter for solenoid operated fluid metering devices
EP0629266B1 (en) 1992-03-05 1996-12-18 Siemens Automotive Corporation Fuel injector having an internal filter
US5325838A (en) * 1993-05-28 1994-07-05 Bennett David E Liquified petroleum gas fuel injector
DE4421881A1 (en) * 1994-06-23 1996-01-04 Bosch Gmbh Robert Valve needle
DE4437927C2 (en) * 1994-10-24 1996-09-12 Bosch Gmbh Robert Solenoid valve-controlled fuel injection device with an injection nozzle for fuel injection into the combustion chamber of a diesel internal combustion engine
US5769328A (en) * 1995-12-26 1998-06-23 General Motors Corporation Fuel interconnect for fuel injector
DE19638201B4 (en) * 1996-09-19 2005-05-04 Robert Bosch Gmbh Fuel injector
DE19815789A1 (en) * 1998-04-08 1999-10-14 Bosch Gmbh Robert Fuel injector
DE19946602A1 (en) * 1999-09-29 2001-04-12 Bosch Gmbh Robert Fuel injector
DE19950761A1 (en) * 1999-10-21 2001-04-26 Bosch Gmbh Robert Fuel injection valve has supporting ring between elastomeric ring and armature that supports elastomeric ring axially near opening of fuel channel in armature and radially on shoulder
US6363915B1 (en) * 2000-06-29 2002-04-02 Siemens Automotive Corporation Fuel injector valve with motion damper

Also Published As

Publication number Publication date
DE10130205A1 (en) 2003-01-02
EP1402172A1 (en) 2004-03-31
WO2003001051A1 (en) 2003-01-03
JP4008875B2 (en) 2007-11-14
US6994281B2 (en) 2006-02-07
JP2004521252A (en) 2004-07-15
US20040099753A1 (en) 2004-05-27
KR20030036712A (en) 2003-05-09
DE50201582D1 (en) 2004-12-23

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