EP2396536B1 - Injection valve - Google Patents

Injection valve Download PDF

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Publication number
EP2396536B1
EP2396536B1 EP09774677.0A EP09774677A EP2396536B1 EP 2396536 B1 EP2396536 B1 EP 2396536B1 EP 09774677 A EP09774677 A EP 09774677A EP 2396536 B1 EP2396536 B1 EP 2396536B1
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EP
European Patent Office
Prior art keywords
housing
injection valve
valve
sleeve
plastics encapsulation
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Application number
EP09774677.0A
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German (de)
French (fr)
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EP2396536A1 (en
Inventor
Ferdinand Reiter
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication of EP2396536A1 publication Critical patent/EP2396536A1/en
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    • 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
    • F02M2200/16—Sealing of fuel injection apparatus not otherwise provided for
    • 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
    • F02M2200/85—Mounting of fuel injection apparatus
    • F02M2200/858—Mounting of fuel injection apparatus sealing arrangements between injector and engine
    • 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
    • F02M2200/90—Selection of particular materials
    • F02M2200/9015—Elastomeric or plastic materials
    • 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
    • F02M2200/90—Selection of particular materials
    • F02M2200/9038—Coatings

Definitions

  • the invention is based on an injection valve for the metered spraying of a fluid, in particular fuel, according to the preamble of claim 1.
  • a known fuel injection valve ( DE 197 44 739 A1 and US 2006/0016418 A1 ) comprises a housing composed of a plurality of parts, a part of which is formed by an inlet port with a fuel inlet and a part of a diameter-stepped sleeve.
  • the tubular inlet nozzle dips into the larger diameter sleeve portion of the sleeve and partially into the smaller diameter sleeve portion of the sleeve and carries on its immersion end a solenoid of a valve needle driving electromagnet, with the valve needle fixedly connected armature in the immersed into the smaller diameter sleeve portion end of the inlet nozzle axially slidably guided.
  • the open end of the smaller diameter sleeve portion is terminated by a valve body to which a valve seat surrounding a valve port is formed. With the valve seat acts formed at the end of the valve needle closing head for releasing and closing the valve opening together.
  • the injection chamber is followed by a spray orifice plate.
  • the region of the inlet nozzle projecting out of the sleeve is enclosed by a plastic extrusion which covers the opening of the larger diameter sleeve portion of the sleeve and terminates at a distance from the inlet end of the inlet nozzle.
  • Kunststoffumspritzung a connector for a solenoid coil of the electromagnet is poured.
  • the fuel injection valve is inserted into a valve seat in the cylinder head of an internal combustion engine and sealed by means of two sealing rings against the wall of the valve seat.
  • a lower sealing ring in a on the discharge side, received lower end of the smaller diameter sleeve portion of the sleeve existing annular groove and pushed an upper sealing ring on the protruding from the plastic extrusion, inlet-side upper end of the inlet nozzle.
  • the upper sealing ring presses after installation of the injector in the valve seat on the annular end face of the plastic extrusion.
  • the injection valve according to the invention with the features of claim 1 has the advantage that the additional sealing of the lower attachment point of the plastic extrusion on the housing of the injection valve, an absolute tightness of the injector is ensured in the long term and in the housing interior, e.g. on the solenoid, no corrosion damage.
  • the injector is thus "water-able", i. Insensitive to immersion in water, mud and the like, as required for off-road and commercial vehicles.
  • the additional sealing of the housing is realized by a lower separation point between the housing and Kunststoffumspritzung cross-sealing sleeve, which presses on the one hand on the plastic encapsulation and on the other hand on the housing.
  • Kunststoffumspritzung cross-sealing sleeve which presses on the one hand on the plastic encapsulation and on the other hand on the housing.
  • the plastic extrusion is provided near its upper end with a circumferential outer groove and inserted into the outer groove, a sealing ring for sealing against the valve seat.
  • FIG. 2 in perspective side view and in Fig. 1 injector shown in section is used for example for injecting fuel into a leading to a combustion chamber of an internal combustion engine intake or directly into the combustion chamber of the engine or for metered spraying of another fluid, for example urea-water solutions in exhaust systems of internal combustion engines in order to reduce in the exhaust contained nitrogen oxides.
  • the injection valve has a housing 11, which is composed of three housing parts, namely from an inlet nozzle 12 with inlet opening 121 for the fluid, a valve tube 13, in which the end of the inlet nozzle 12 is immersed, and a pushed onto the valve tube 13 housing sleeve 14th with two different inner diameter sleeve portions 141 and 142.
  • the sleeve portion 141 with the larger inner diameter encloses a seated on the valve tube 13 magnetic coil 15 of an electromagnet for actuating a valve needle arranged in the interior of the valve tube 13.
  • the valve needle is firmly connected in a known manner with a magnet armature of the electromagnet and pressed under the action of a arranged in the valve tube 13 valve closing spring with a closing head on a valve opening surrounding a valve seat of the injector.
  • the sleeve portion 142 of the housing sleeve 14 with the smaller inner diameter is seated in a form-fitting manner on the valve tube 13.
  • the housing 11 is enclosed by a plastic extrusion 16, from which the housing 11 projects axially with its fluid inlet side, upper housing end and its fluidabspritz purposeen, lower housing end.
  • the fluid inlet side, upper housing end is thereby from an end portion of the inlet nozzle 12 and the fluidabspritz workede, lower housing end of a portion of the sleeve portion 141 with the larger inner diameter and the complete Sleeve portion 142 formed with the smaller inner diameter.
  • a connector 20 is cast, the two plug contacts 21 are connected to the winding of the solenoid coil 15.
  • the injection valve is usually used in valve seats 17, 27, as in Fig. 1 excerpts are indicated.
  • the lower valve seat 17 is a bore in the cylinder head of a combustion cylinder of the internal combustion engine and the upper valve seat 27 a bore in a fuel rail which is fixed to the cylinder head.
  • two sealing rings 18, 19 are provided, of which a lower sealing ring 18 in a housing 11, more precisely in the sleeve portion 142 with the smaller inner diameter, recessed annular groove 26 rests and an upper sealing ring 19 sits on the protruding from the plastic extrusion 16 portion of the inlet nozzle 12.
  • a preferably made of an elastomer sealing sleeve 23 is used in the illustrated embodiment, which on the one hand on the plastic extrusion 16 and on the other hand on the housing 11, more precisely on the sleeve portion 141 of the housing sleeve 14 with the larger inner diameter, presses.
  • the plastic extrusion 16 is provided near its upper end with a circumferential outer groove 24 and in the outer groove 24, a sealing ring 25, e.g. an O-ring, inserted, which presses in the valve seat 17 on the inner wall.
  • This sealing ring 25 is of particular advantage when an installation position of the injector is required, in which possibly the inlet opening 121 of the inlet nozzle 12 is spatially below the injection opening of the injector and thus this area in the operation of the motor vehicle also to an increased extent water, mud and the like . is exposed, or operating conditions occur in which the injector completely immersed in water.

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

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einem Einspritzventil zum dosierten Abspritzen eines Fluids, insbesondere von Kraftstoff, nach dem Oberbegriff des Anspruchs 1.The invention is based on an injection valve for the metered spraying of a fluid, in particular fuel, according to the preamble of claim 1.

Ein bekanntes Kraftstoff-Einspritzventil ( DE 197 44 739 A1 und US 2006/0016418 A1 ) weist ein aus mehreren Teilen zusammengesetztes Gehäuse auf, von denen ein Teil von einem Einlassstutzen mit einem Kraftstoffzulauf und ein Teil von einer im Durchmesser gestuften Hülse gebildet ist. Der rohrförmige Einlassstutzen taucht in den durchmessergrößeren Hülsenabschnitt der Hülse und teilweise in den durchmesserkleineren Hülsenabschnitt der Hülse ein und trägt auf seinem Eintauchende eine Magnetspule eines eine Ventilnadel antreibenden Elektromagneten, dessen mit der Ventilnadel fest verbundener Magnetanker in dem in den durchmesserkleineren Hülsenabschnitt eintauchenden Ende des Einlassstutzens axial verschieblich geführt ist. Das offene Ende des durchmesserkleineren Hülsenabschnitts ist von einem Ventilkörper abgeschlossen, an dem ein eine Ventilöffnung umgebender Ventilsitz ausgebildet ist. Mit dem Ventilsitz wirkt ein am Ende der Ventilnadel ausgebildeter Schließkopf zum Freigeben und Schließen der Ventilöffnung zusammen. Dem Ventilkörper ist eine Spritzlochscheibe nachgeordnet.Der aus der Hülse herausragende Bereich des Einlassstutzens ist von einer Kunststoffumspritzung umschlossen, die die Öffnung des durchmessergrößeren Hülsenabschnitts der Hülse abdeckt und mit Abstand von dem zulaufseitigen Ende des Einlassstutzens endet. In die Kunststoffumspritzung ist ein Anschlussstecker für eine Magnetspule des Elektromagneten eingegossen. Das Kraftstoff-Einspritzventil wird in eine Ventilaufnahme im Zylinderkopf einer Brennkraftmaschine eingesetzt und mittels zweier Dichtungsringe gegen die Wand der Ventilaufnahme abgedichtet. Dabei ist ein unterer Dichtungsring in einer am abspritzseitigen, unteren Ende des durchmesserkleineren Hülsenabschnitts der Hülse vorhandenen Ringnut aufgenommen und ein oberer Dichtungsring auf das aus der Kunststoffumspritzung herausragende, zulaufseitige obere Ende des Einlassstutzens aufgeschoben. Der obere Dichtungsring presst sich nach Einbau des Einspritzventils in die Ventilaufnahme auf die ringförmige Stirnfläche der Kunststoffumspritzung auf.A known fuel injection valve ( DE 197 44 739 A1 and US 2006/0016418 A1 ) comprises a housing composed of a plurality of parts, a part of which is formed by an inlet port with a fuel inlet and a part of a diameter-stepped sleeve. The tubular inlet nozzle dips into the larger diameter sleeve portion of the sleeve and partially into the smaller diameter sleeve portion of the sleeve and carries on its immersion end a solenoid of a valve needle driving electromagnet, with the valve needle fixedly connected armature in the immersed into the smaller diameter sleeve portion end of the inlet nozzle axially slidably guided. The open end of the smaller diameter sleeve portion is terminated by a valve body to which a valve seat surrounding a valve port is formed. With the valve seat acts formed at the end of the valve needle closing head for releasing and closing the valve opening together. The injection chamber is followed by a spray orifice plate. The region of the inlet nozzle projecting out of the sleeve is enclosed by a plastic extrusion which covers the opening of the larger diameter sleeve portion of the sleeve and terminates at a distance from the inlet end of the inlet nozzle. In the Kunststoffumspritzung a connector for a solenoid coil of the electromagnet is poured. The fuel injection valve is inserted into a valve seat in the cylinder head of an internal combustion engine and sealed by means of two sealing rings against the wall of the valve seat. Here is a lower sealing ring in a on the discharge side, received lower end of the smaller diameter sleeve portion of the sleeve existing annular groove and pushed an upper sealing ring on the protruding from the plastic extrusion, inlet-side upper end of the inlet nozzle. The upper sealing ring presses after installation of the injector in the valve seat on the annular end face of the plastic extrusion.

Offenbarung der ErfindungDisclosure of the invention

Das erfindungsgemäße Einspritzventil mit den Merkmalen des Anspruchs 1 hat den Vorteil, dass durch die zusätzliche Abdichtung der unteren Ansatzstelle der Kunststoffumspritzung am Gehäuse des Einspritzventils eine absolute Dichtheit des Einspritzventils langfristig gewährleistet wird und im Gehäuseinnern, z.B. an der Magnetspule, keine Korrosionsschäden auftreten. Das Einspritzventil ist damit "watfähig", d.h. unempfindlich gegen Eintauchen in Wasser, Schlamm und dgl., wie dies bei Gelände- und Nutzfahrzeugen gefordert wird.The injection valve according to the invention with the features of claim 1 has the advantage that the additional sealing of the lower attachment point of the plastic extrusion on the housing of the injection valve, an absolute tightness of the injector is ensured in the long term and in the housing interior, e.g. on the solenoid, no corrosion damage. The injector is thus "water-able", i. Insensitive to immersion in water, mud and the like, as required for off-road and commercial vehicles.

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

Gemäß der Erfindung ist die zusätzliche Abdichtung des Gehäuses durch eine die untere Trennstelle zwischen Gehäuse und Kunststoffumspritzung übergreifende Dichtmanschette realisiert, die sich einerseits auf die Kunststoffumspritzung und andererseits auf das Gehäuse aufpresst. Mit einer solchen, vorzugsweise aus einem Elastomer bestehenden Dichtmanschette wird die Dichtheit in fertigungstechnisch einfacher und zuverlässiger Weise ohne Eingriff in die Ventilkonstruktion erreicht.According to the invention, the additional sealing of the housing is realized by a lower separation point between the housing and Kunststoffumspritzung cross-sealing sleeve, which presses on the one hand on the plastic encapsulation and on the other hand on the housing. With such, preferably made of an elastomer sealing sleeve, the tightness is achieved in manufacturing technology simple and reliable manner without interference with the valve construction.

Gemäß einer vorteilhaften Ausführungsform der Erfindung ist die Kunststoffumspritzung nahe ihrem oberen Ende mit einer umlaufenden Außennut versehen und in die Außennut ein Dichtungsring zum Abdichten gegenüber der Ventilaufnahme eingelegt. Durch diesen oberen Dichtungsring wird die Watfähigkeit des Einspritzventils auch in Einbaulagen gewährleistet, in denen das Einspritzventil querliegend oder über Kopf eingesetzt ist, so dass z.B. das zulaufseitige Ende des Einspritzventils tiefer liegt als das abspritzseitige Ende.According to an advantageous embodiment of the invention, the plastic extrusion is provided near its upper end with a circumferential outer groove and inserted into the outer groove, a sealing ring for sealing against the valve seat. By this upper sealing ring the wading ability of the injection valve is ensured even in mounting positions in which the injection valve is inserted transversely or over head, so that, for example, the inlet-side end of the injection valve is lower than the discharge-side end.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Die Erfindung ist anhand eines in den Zeichnungen dargestellten Ausführungsbeispiels in der nachfolgenden Beschreibung näher erläutert. Es zeigen:

Fig. 1
einen Längsschnitt eines Einspritzventils,
Fig. 2
eine perspektivische Seitenansicht des Einspritzventils in Fig. 1.
The invention is explained in more detail in the following description with reference to an embodiment shown in the drawings. Show it:
Fig. 1
a longitudinal section of an injection valve,
Fig. 2
a side perspective view of the injection valve in Fig. 1 ,

Das in Fig. 2 in perspektivischer Seitenansicht und in Fig. 1 im Schnitt dargestellte Einspritzventil dient beispielsweise zum Einspritzen von Kraftstoff in einen zu einem Brennraum einer Brennkraftmaschine führenden Ansaugkanal oder direkt in den Brennraum der Brennkraftmaschine oder zum dosierten Abspritzen eines anderen Fluids, z.B. von Harnstoff-Wasser-Lösungen in Abgasanlagen von Brennkraftmaschinen zwecks Reduzierung von im Abgas enthaltenen Stickoxiden. Das Einspritzventil weist ein Gehäuse 11 auf, das aus drei Gehäuseteilen zusammengesetzt ist, und zwar aus einem Zulaufstutzen 12 mit Zulauföffnung 121 für das Fluid, einem Ventilrohr 13, in das das Ende des Zulaufstutzens 12 eintaucht, und einer auf das Ventilrohr 13 aufgeschobenen Gehäusehülse 14 mit zwei unterschiedliche Innendurchmesser aufweisenden Hülsenabschnitte 141 und 142. Der Hülsenabschnitt 141 mit dem größeren Innendurchmesser umschließt eine auf dem Ventilrohr 13 sitzende Magnetspule 15 eines Elektromagneten zur Betätigung einer im Innern des Ventilrohrs 13 angeordneten Ventilnadel. Die Ventilnadel ist in bekannter Weise fest mit einem Magnetanker des Elektromagneten verbunden und unter der Wirkung einer im Ventilrohr 13 angeordneten Ventilschließfeder mit einem Schließkopf auf einen eine Ventilöffnung umgebenden Ventilsitz des Einspritzventils aufgepresst. Der Hülsenabschnitt 142 der Gehäusehülse 14 mit dem kleineren Innendurchmesser sitzt formschlüssig auf dem Ventilrohr 13 auf.This in Fig. 2 in perspective side view and in Fig. 1 injector shown in section is used for example for injecting fuel into a leading to a combustion chamber of an internal combustion engine intake or directly into the combustion chamber of the engine or for metered spraying of another fluid, for example urea-water solutions in exhaust systems of internal combustion engines in order to reduce in the exhaust contained nitrogen oxides. The injection valve has a housing 11, which is composed of three housing parts, namely from an inlet nozzle 12 with inlet opening 121 for the fluid, a valve tube 13, in which the end of the inlet nozzle 12 is immersed, and a pushed onto the valve tube 13 housing sleeve 14th with two different inner diameter sleeve portions 141 and 142. The sleeve portion 141 with the larger inner diameter encloses a seated on the valve tube 13 magnetic coil 15 of an electromagnet for actuating a valve needle arranged in the interior of the valve tube 13. The valve needle is firmly connected in a known manner with a magnet armature of the electromagnet and pressed under the action of a arranged in the valve tube 13 valve closing spring with a closing head on a valve opening surrounding a valve seat of the injector. The sleeve portion 142 of the housing sleeve 14 with the smaller inner diameter is seated in a form-fitting manner on the valve tube 13.

Das Gehäuse 11 ist von einer Kunststoffumspritzung 16 umschlossen, aus der das Gehäuse 11 mit seinem fluidzulaufseitigen, oberen Gehäuseende und seinem fluidabspritzseitigen, unteren Gehäuseende axial vorsteht. Das fluidzulaufseitige, obere Gehäuseende wird dabei von einem Endabschnitt des Zulaufstutzens 12 und das fluidabspritzseitige, untere Gehäuseende von einem Teil des Hülsenabschnitts 141 mit dem größeren Innendurchmesser und dem vollständigen Hülsenabschnitt 142 mit dem kleineren Innendurchmesser gebildet. In die Kunststoffumspritzung 16 ist ein Anschlussstecker 20 eingegossen, dessen zwei Steckerkontakte 21 mit der Wicklung der Magnetspule 15 verbunden sind. Das Einspritzventil wird üblicherweise in Ventilaufnahmen 17, 27 eingesetzt, wie sie in Fig. 1 ausschnittweise angedeutet sind. Im Falle eines Kraftstoff-Einspritzventils ist die untere Ventilaufnahme 17 eine Bohrung im Zylinderkopf eines Verbrennungszylinders der Brennkraftmaschine und die obere Ventilaufnahme 27 eine Bohrung in einem Kraftstoffverteiler, der am Zylinderkopf befestigt ist. Zur Abdichtung des Gehäuses 11 gegenüber den Ventilaufnahmen 17, 27 sind zwei Dichtungsringe 18, 19 vorgesehen, von denen ein unterer Dichtungsring 18 in einer im Gehäuse 11, genauer gesagt in dem Hülsenabschnitt 142 mit dem kleineren Innendurchmesser, eingestochenen Ringnut 26 einliegt und ein oberer Dichtungsring 19 auf dem aus der Kunststoffumspritzung 16 herausragenden Abschnitt des Zulaufstutzens 12 sitzt.The housing 11 is enclosed by a plastic extrusion 16, from which the housing 11 projects axially with its fluid inlet side, upper housing end and its fluidabspritzseitigen, lower housing end. The fluid inlet side, upper housing end is thereby from an end portion of the inlet nozzle 12 and the fluidabspritzseitige, lower housing end of a portion of the sleeve portion 141 with the larger inner diameter and the complete Sleeve portion 142 formed with the smaller inner diameter. In the plastic encapsulation 16, a connector 20 is cast, the two plug contacts 21 are connected to the winding of the solenoid coil 15. The injection valve is usually used in valve seats 17, 27, as in Fig. 1 excerpts are indicated. In the case of a fuel injection valve, the lower valve seat 17 is a bore in the cylinder head of a combustion cylinder of the internal combustion engine and the upper valve seat 27 a bore in a fuel rail which is fixed to the cylinder head. For sealing the housing 11 relative to the valve seats 17, 27, two sealing rings 18, 19 are provided, of which a lower sealing ring 18 in a housing 11, more precisely in the sleeve portion 142 with the smaller inner diameter, recessed annular groove 26 rests and an upper sealing ring 19 sits on the protruding from the plastic extrusion 16 portion of the inlet nozzle 12.

Um Korrosionsschäden im Innern des Gehäuses 11, insbesondere an der Magnetspule 15 zu verhindern, wie sie bei Einsatz des Einspritzventils in Kraftfahrzeugen, die einer rauhen Betriebsweise ausgesetzt sind, durch Eindringen von Wasser an der Trennstelle zwischen Gehäuse 11 und Kunststoffumspritzung 16 auftreten können, ist die am unteren Ende der Kunststoffumspritzung 16 umlaufende Trennstelle 22 von Gehäuse 11 und Kunststoffumspritzung 16 abgedichtet, also wasserdicht gemacht. Hierzu ist im dargestellten Ausführungsbeispiel eine vorzugsweise aus einem Elastomer hergestellte Dichtmanschette 23 verwendet, die sich einerseits auf die Kunststoffumspritzung 16 und andererseits auf das Gehäuse 11, genauer gesagt auf den Hülsenabschnitt 141 der Gehäusehülse 14 mit dem größeren Innendurchmesser, aufpresst. Zusätzlich ist die Kunststoffumspritzung 16 nahe ihrem oberen Ende mit einer umlaufenden Außennut 24 versehen und in die Außennut 24 ein Dichtungsring 25, z.B. ein O-Ring, eingelegt, der sich in der Ventilaufnahme 17 an deren Innenwand anpresst. Dieser Dichtungsring 25 ist dann von besonderem Vorteil, wenn eine Einbaulage des Einspritzventils gefordert wird, in welcher möglicherweise die Zulauföffnung 121 des Zulaufstutzens 12 räumlich unterhalb der Abspritzöffnung des Einspritzventils liegt und somit dieser Bereich im Betrieb des Kraftfahrzeugs ebenfalls in erhöhtem Maße Wasser, Schlamm und dgl. ausgesetzt ist, oder Betriebszustände auftreten, in denen das Einspritzventil vollkommen in Wasser eintaucht.In order to prevent corrosion damage inside the housing 11, in particular on the magnetic coil 15, as they may occur when using the injector in motor vehicles, which are exposed to rough operation, by penetration of water at the interface between the housing 11 and plastic extrusion 16, the sealed at the bottom of the plastic extrusion 16 circumferential separation point 22 of the housing 11 and plastic extrusion 16, so made waterproof. For this purpose, a preferably made of an elastomer sealing sleeve 23 is used in the illustrated embodiment, which on the one hand on the plastic extrusion 16 and on the other hand on the housing 11, more precisely on the sleeve portion 141 of the housing sleeve 14 with the larger inner diameter, presses. In addition, the plastic extrusion 16 is provided near its upper end with a circumferential outer groove 24 and in the outer groove 24, a sealing ring 25, e.g. an O-ring, inserted, which presses in the valve seat 17 on the inner wall. This sealing ring 25 is of particular advantage when an installation position of the injector is required, in which possibly the inlet opening 121 of the inlet nozzle 12 is spatially below the injection opening of the injector and thus this area in the operation of the motor vehicle also to an increased extent water, mud and the like . is exposed, or operating conditions occur in which the injector completely immersed in water.

Claims (3)

  1. Injection valve for the dosed ejection of a fluid, in particular of fuel, having a housing (11) and having a plastics encapsulation (16) which surrounds the housing (11), out of which plastics encapsulation the housing (11) projects by way of an upper housing end at a fluid inlet side and by way of a lower housing end at a fluid ejection side, characterized in that the encircling parting point (22) between housing (11) and plastics encapsulation (16) at the lower end of the plastics encapsulation (16) is sealed off on the outside, wherein the parting point (22) is extended over by a sealing sleeve (23) which presses at one side against the plastics encapsulation (16) and at the other side against the housing (11).
  2. Injection valve according to Claim 1, characterized in that the sealing sleeve (23) is produced from an elastomer.
  3. Injection valve according to either of Claims 1 and 2, characterized in that the plastics encapsulation (16) is provided, close to its upper end, with an encircling external groove (24), and in that a seal ring (25) for sealing with respect to a valve receptacle (17) lies in the external groove (24).
EP09774677.0A 2009-02-16 2009-12-14 Injection valve Active EP2396536B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009000872.1A DE102009000872B4 (en) 2009-02-16 2009-02-16 Injector
PCT/EP2009/067106 WO2010091759A1 (en) 2009-02-16 2009-12-14 Injection valve

Publications (2)

Publication Number Publication Date
EP2396536A1 EP2396536A1 (en) 2011-12-21
EP2396536B1 true EP2396536B1 (en) 2014-04-16

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ID=41598039

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09774677.0A Active EP2396536B1 (en) 2009-02-16 2009-12-14 Injection valve

Country Status (6)

Country Link
US (1) US9359987B2 (en)
EP (1) EP2396536B1 (en)
JP (1) JP5738202B2 (en)
CN (1) CN102317614B (en)
DE (1) DE102009000872B4 (en)
WO (1) WO2010091759A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011006221B4 (en) 2011-03-28 2022-09-29 Robert Bosch Gmbh Valve for a flowing medium
DE102011081176A1 (en) 2011-08-18 2013-02-21 Robert Bosch Gmbh Valve for metering a flowing medium
KR101776335B1 (en) * 2011-12-09 2017-09-08 현대자동차주식회사 Independent fuel injecting system of Compressed Natural Gas engine
DE102013201794A1 (en) 2013-02-05 2014-08-07 Robert Bosch Gmbh Injection valve for metering of fluid injected into engine mounted in e.g. off-road vehicle, has plastic rings that are embedded at axial distance of coating from fluid-measuring side housing end and fluid inlet side housing end
US9366167B2 (en) * 2013-11-08 2016-06-14 Continental Automotive Systems, Inc. Injector water intrusion seal with blow out volume

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2908095C2 (en) * 1979-03-02 1984-02-16 Robert Bosch Gmbh, 7000 Stuttgart Fuel injection system for internal combustion engines
DE19744739A1 (en) 1997-10-10 1999-04-15 Bosch Gmbh Robert Fuel injection valve for internal combustion engine
US6065692A (en) * 1999-06-09 2000-05-23 Siemens Automotive Corporation Valve seat subassembly for fuel injector
JP3712589B2 (en) 2000-03-31 2005-11-02 愛三工業株式会社 Injector response adjustment method
US6622752B2 (en) * 2000-06-16 2003-09-23 Bosch Automotive Systems Corporation Pressure relief valve
JP3899937B2 (en) 2002-01-18 2007-03-28 株式会社デンソー Fuel injection valve
US7374632B2 (en) * 2003-12-19 2008-05-20 Continental Automotive Systems Us, Inc. Methods of polymeric bonding fuel system components
JP2006057620A (en) * 2004-07-20 2006-03-02 Aisan Ind Co Ltd Fuel injection valve and method for sealing fuel injection valve
JP3993594B2 (en) * 2004-09-27 2007-10-17 株式会社ケーヒン Electromagnetic fuel injection valve
DE102005037319A1 (en) * 2005-08-04 2007-02-08 Robert Bosch Gmbh Fuel injector
DE102005052255B4 (en) 2005-11-02 2020-12-17 Robert Bosch Gmbh Fuel injector
US20080006713A1 (en) * 2006-07-06 2008-01-10 Parish James R Fuel injector having an internally mounted cross-flow nozzle for enhanced compressed natural gas jet spray
DE102006042600A1 (en) 2006-09-11 2008-03-27 Robert Bosch Gmbh Electro-magnetic valve e.g. for electro-magnetically actuated valve, has magnetic coil, movable by means of electromagnetic circuit and inner metal body with inner lengthwise opening provided

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JP5738202B2 (en) 2015-06-17
CN102317614A (en) 2012-01-11
JP2012517553A (en) 2012-08-02
WO2010091759A1 (en) 2010-08-19
DE102009000872A1 (en) 2010-08-19
CN102317614B (en) 2016-04-27
EP2396536A1 (en) 2011-12-21
US20120037727A1 (en) 2012-02-16
US9359987B2 (en) 2016-06-07
DE102009000872B4 (en) 2018-05-30

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