EP3676489A1 - Injection valve assembly - Google Patents

Injection valve assembly

Info

Publication number
EP3676489A1
EP3676489A1 EP18735287.7A EP18735287A EP3676489A1 EP 3676489 A1 EP3676489 A1 EP 3676489A1 EP 18735287 A EP18735287 A EP 18735287A EP 3676489 A1 EP3676489 A1 EP 3676489A1
Authority
EP
European Patent Office
Prior art keywords
housing
injection
injection valve
region
combustion engine
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.)
Granted
Application number
EP18735287.7A
Other languages
German (de)
French (fr)
Other versions
EP3676489B1 (en
Inventor
Nelly Krause
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 EP3676489A1 publication Critical patent/EP3676489A1/en
Application granted granted Critical
Publication of EP3676489B1 publication Critical patent/EP3676489B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F02M61/16—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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
    • 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
    • F02M2200/8046—Fuel injection apparatus manufacture, repair or assembly the manufacture involving injection moulding, e.g. of plastic or metal
    • 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
    • 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
    • F02M2200/856—Mounting of fuel injection apparatus characterised by mounting injector to fuel or common rail, or vice versa
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • F02M55/025—Common rails
    • 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
    • F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
    • F02M69/465—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down of fuel rails

Definitions

  • the present invention relates to an injection assembly with a
  • Injection valve for injecting a fluid, in particular a
  • a required holding force for holding the injection valve is provided by a holding element.
  • the holding force of the holding element is transmitted either directly to a housing which surrounds the injection valve or to a disk welded to the housing. In this case, the housing can sit, creating a distance between the
  • Injector and the area of the internal combustion engine is larger, and the holding member leaves his workspace. It can in the housing
  • the disc is an additional component that is first positioned and then
  • the injection valve assembly according to the invention in particular as a
  • Fuel injection valve assembly is formed, has the advantage of a simple and robust construction. This is inventively by a
  • Injection valve arrangement which comprises an injection valve, a housing which at least partially surrounds the injection valve, and a connecting piece.
  • the connection piece is connected to the injection valve and has a connection region, via which the injection valve is arranged in a form-fitting manner on the housing.
  • the positive connection between the injection valve and the housing prevents setting of the housing.
  • the connecting piece which serves as the interface to the region of the internal combustion engine, in particular to the rail cup, and at the same time supports the housing. This will be an additional component and an additional
  • connection piece is welded to the housing.
  • the connecting portion has a radially outward
  • the connecting portion has a first end and a second end, wherein the first end is arranged in the injection direction in front of the second end.
  • the first end is a rail-side end, with the second end a
  • combustion chamber end is.
  • the first end in a mounted state of the injection device in an internal combustion engine facing a common rail, wherein the second end of a combustion chamber of the
  • the collar spreads in the direction from the first end to the second end.
  • the collar is in the shape of a
  • the connecting region preferably has at least one groove which engages with a shoulder of the housing.
  • the heel and the groove have
  • the connecting portion may have at least one shoulder which engages with a groove of the housing.
  • the shoulder and the groove preferably have complementary shapes.
  • connection area is at least partially
  • fir-tree-shaped means that the connecting portion comprises a plurality of shoulders each formed in a longitudinal section as a right-angled triangle, wherein the hypotenuse of the right-angled triangle is preferably in the direction from the first end to the second end of the connecting portion in front of long vertical side.
  • the housing preferably has a housing area which is set up to receive a holding element for holding the injection arrangement on a component of an internal combustion engine.
  • the connection region of the injection valve is arranged in the immediate vicinity of the housing region.
  • connection area in a longitudinal direction of the housing is before or after the housing area or above or below the housing area
  • the longitudinal direction corresponds to a longitudinal axis of the housing.
  • connection area serves as a kind of entanglement, which ensures that the housing does not set.
  • connection region is advantageously rotationally symmetrical.
  • connection area extends around a complete circumference of the connecting piece.
  • the connecting region in the circumferential direction of the connecting piece can be formed only in sections.
  • the connecting piece is preferably a rotary part.
  • connection area may be asymmetrical.
  • connection region may preferably have a shoulder or a plurality of shoulders and / or a groove and / or a plurality of grooves, which are arranged asymmetrically in the circumferential direction, in particular have no rotational symmetry.
  • the housing is formed as a molded part.
  • the present invention relates to an internal combustion engine comprising a previously described injection assembly.
  • the injection arrangement is preferably arranged on a component, in particular on a common rail.
  • the common rail is also to be understood as a distributor to which a plurality of injection arrangements can be attached and which can supply them with fluid, in particular fuel.
  • FIG. 1 is a schematic simplified view of an injection assembly according to a first embodiment of the present invention, wherein the injection assembly is disposed in an internal combustion engine, a simplified schematic enlarged view of a portion of the injection assembly shown in Figure 1, a simplified schematic perspective view of a connecting piece, which is provided in the injection assembly of Figure 1.
  • Figure 4 is a schematic simplified view of a
  • FIG. 6 is a schematic simplified view of a
  • Figure 7 is a schematic simplified view of a
  • FIG. 1 shows an internal combustion engine 10, in which the injection assembly 1 is arranged.
  • a holding element 9 is provided to hold the injection assembly 1 to the internal combustion engine 10 and in a bore of the internal combustion engine 10.
  • the injection assembly 1 is in particular attached to a distributor 12 or common rail of the internal combustion engine 10.
  • the injection valve assembly in particular as a
  • Fuel injection valve assembly is formed comprises an injection valve 2, a housing 3 and a connecting piece 4.
  • the housing 3 at least partially surrounds the injection valve 2 and is formed as an injection-molded part.
  • the connecting piece 4 is connected to the injection valve 2 and has a connection region 40, via which the injection valve 2 is arranged in a form-fitting manner on the housing 3.
  • the housing 3 is shown transparent for clarity.
  • the injection valve 2 is connected to the connecting piece 4 by means of an extension element 5 designed as a tube.
  • connection region 40 has a first end 45 and a second end 46, wherein the first end 45 is arranged in the injection direction 100 in front of the second end 46 (FIG. 2).
  • the first end 45 is a rail-side end, with the second end 46 being a combustion chamber-side end. In other words, the first end 45 is in an assembled state of the injection assembly 1 in the
  • a Longitudinal axis of the injection assembly 1 is designated by the reference numeral 101.
  • the longitudinal axis 101 defines a longitudinal direction.
  • connection region 40 is advantageously rotationally symmetrical.
  • the connecting region 40 extends around a complete circumference of the connecting piece 4.
  • the connecting portion 40 has a collar 41 radially outwardly extending.
  • the collar 41 spreads in the direction from the first end 45 to the second end 46.
  • the collar 41 is frusto-conical.
  • the connecting portion 40 is disposed in front of a housing portion 30 in a direction corresponding to the direction from the first end 45 to the second end 46. That is, the second end 46 of the connection portion 40 is located in front of the housing portion 30.
  • the housing portion 30 serves as the receiving portion for receiving the holding member 9. The direction from the first end 45 to the second end 46 corresponds to the injection direction 100.
  • FIG. 4 shows a region of an injection arrangement 1 according to a second exemplary embodiment of the invention.
  • the connecting portion 40 has a groove 42 which is engaged with a shoulder 32 of the housing 3.
  • the shoulder 32 of the housing 3 and the groove 42 of the connecting portion 40 have complementary shapes.
  • the shoulder 32 and the groove 42 have a rectangular profile in longitudinal section. Other profiles are also possible.
  • the groove 42 and the shoulder 32 are formed spirally.
  • connection portion 40 may include a plurality of grooves 42 that engage with a plurality of shoulders 32 of the housing 3.
  • the grooves 42 are arranged parallel to one another in the direction of the longitudinal axis 101. Further, each groove 42 extends around the entire circumference of the connecting piece 4. Accordingly, the shoulders 32 are arranged in the direction of the longitudinal axis 101 parallel to each other. Furthermore, extends each shoulder 32 completely in the circumferential direction of the housing 3. In this case, the grooves 42 and the shoulders 32 may be annular.
  • connection region 40 is arranged in the injection direction in front of the housing region 30.
  • FIG. 5 shows a region of an injection arrangement 1 according to a third exemplary embodiment of the invention.
  • the connecting portion 40 has a plurality of shoulders 43 which engage with corresponding grooves 31 of the housing 3.
  • the shoulders 43 and the grooves 31 are preferably
  • the shoulders 43 and the grooves 31 are annular and have a right-angled profile in longitudinal section.
  • the paragraphs 43 are arranged in the longitudinal direction 101 parallel to each other.
  • the grooves 31 are arranged in the longitudinal direction 101 parallel to each other.
  • connection portion 40 is in the injection direction 100 before
  • Housing portion 30 is arranged.
  • Embodiment differs from the injection assembly 1 according to the third embodiment in that the profile of the shoulders 43 and the grooves 31 is formed triangular.
  • the connecting portion 40 is located in the injection direction 100 after the housing portion 30. This means that the first end 45 of the
  • Connecting portion 40 is disposed in the injection direction 100 after the housing portion 30.
  • FIG. 7 shows a region of an injection arrangement 1 according to a fifth exemplary embodiment of the invention.
  • connection region 40 is configured in the manner of a fir tree.
  • the connecting region comprises a plurality of shoulders 43, each of which has a profile in a longitudinal section have right-angled triangle.
  • the hypotenuse of each right-angled triangle is in the direction from the first end 45 to the second end 46 in front of the long vertical side.
  • connection region 40 is located in the injection direction 100 after the housing region 30.
  • connecting portion 40 is shown in section in Figures 4 to 7, wherein the housing 3 is shown partially transparent.
  • connection region 40 may have any combination of the elements described above.

Landscapes

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

Abstract

The invention relates to an injection valve assembly, in particular a fuel injection valve assembly. The injection valve assembly (1) comprises an injection valve (2), a housing (3) that at least partly surrounds the injection valve (2), and a connection piece (4) that is connected to the injection valve (2) and has a connection region (40), via which the injection valve (2) is arranged on the housing (3) in a formfitting manner.

Description

Beschreibung  description
Titel title
Einspritzventilanordnung Stand der Technik  Injector valve arrangement prior art
Die vorliegende Erfindung betrifft eine Einspritzanordnung mit einem The present invention relates to an injection assembly with a
Einspritzventil zum Einspritzen eines Fluids, insbesondere eine Injection valve for injecting a fluid, in particular a
Kraftstoffeinspritzventil-Anordnung. Fuel injection valve assembly.
Um das Einspritzventil an einen Bereich der Brennkraftmaschine, insbesondere an eine Railtasse eines Common Rails, anzuschließen, wird ein In order to connect the injection valve to a region of the internal combustion engine, in particular to a rail cup of a common rail, a
Anschlussstutzen verwendet, wobei eine benötigte Haltekraft zum Halten des Einspritzventils durch ein Halteelement bereitgestellt wird. Die Haltekraft des Halteelements wird entweder direkt auf ein Gehäuse, welches das Einspritzventil umgibt, oder auf eine auf das Gehäuse geschweißte Scheibe übertragen. Dabei kann sich das Gehäuse setzen, wodurch ein Abstand zwischen dem Used connecting piece, wherein a required holding force for holding the injection valve is provided by a holding element. The holding force of the holding element is transmitted either directly to a housing which surrounds the injection valve or to a disk welded to the housing. In this case, the housing can sit, creating a distance between the
Einspritzventil und dem Bereich der Brennkraftmaschine größer wird, und das Halteelement seinen Arbeitsbereich verlässt. Dabei können im Gehäuse Injector and the area of the internal combustion engine is larger, and the holding member leaves his workspace. It can in the housing
gefährliche Spannungen und Dehnungen auftreten, die zu Rissen führen können.dangerous stresses and strains occur, which can lead to cracks.
Die Risse führen zu Undichtigkeit des Gehäuses gegenüber Feuchtigkeit. Ferner ist die Scheibe ein zusätzliches Bauteil, das zuerst positioniert und dann The cracks lead to leakage of the housing against moisture. Further, the disc is an additional component that is first positioned and then
geschweißt werden muss. Offenbarung der Erfindung must be welded. Disclosure of the invention
Die erfindungsgemäße Einspritzventilanordnung, die insbesondere als eine The injection valve assembly according to the invention, in particular as a
Kraftstoffeinspritzventil-Anordnung ausgebildet ist, weist den Vorteil eines einfachen und robusten Aufbaus auf. Dies wird erfindungsgemäß durch eine Fuel injection valve assembly is formed, has the advantage of a simple and robust construction. This is inventively by a
Einspritzventilanordnung erreicht, welche ein Einspritzventil, ein Gehäuse, das zumindest teilweise das Einspritzventil umgibt, und einen Anschlussstutzen umfasst. Dabei ist der Anschlussstutzen mit dem Einspritzventil verbunden und weist einen Verbindungsbereich auf, über den das Einspritzventil am Gehäuse formschlüssig angeordnet ist. Die formschlüssige Verbindung zwischen dem Einspritzventil und dem Gehäuse verhindert ein Setzen des Gehäuses. Insbesondere bei Injection valve arrangement achieved, which comprises an injection valve, a housing which at least partially surrounds the injection valve, and a connecting piece. In this case, the connection piece is connected to the injection valve and has a connection region, via which the injection valve is arranged in a form-fitting manner on the housing. The positive connection between the injection valve and the housing prevents setting of the housing. Especially at
Temperaturänderungen verhindert die formschlüssige Verbindung eine Bewegung desTemperature changes prevent the positive connection movement of the
Gehäuses während einer Ausdehnung oder Schrumpfung. Somit werden die Festigkeit des Gehäuses aufrechterhalten und Undichtigkeiten vermieden. Weiterhin gibt es nur ein Bauteil, nämlich den Anschlussstutzen, welcher als die Schnittstelle zum Bereich der Brennkraftmaschine, insbesondere zu der Railtasse, dient und gleichzeitig das Gehäuse abstützt. Dadurch werden ein zusätzliches Bauteil und ein zusätzlichesHousing during expansion or shrinkage. Thus, the strength of the housing can be maintained and leaks avoided. Furthermore, there is only one component, namely the connecting piece, which serves as the interface to the region of the internal combustion engine, in particular to the rail cup, and at the same time supports the housing. This will be an additional component and an additional
Prozess zum Positionieren dieses Bauteils in der Einspritzanordnung gespart. Process saved for positioning of this component in the injection assembly.
Außerdem ist das Herstellen eines derartigen Anschlussstutzens einfach und sehr kostengünstig. Vorzugsweise ist der Anschlussstutzen am Gehäuse geschweißt. In addition, the production of such a connecting piece is simple and very inexpensive. Preferably, the connection piece is welded to the housing.
Die Unteransprüche zeigen bevorzugte Weiterbildungen der Erfindung. The dependent claims show preferred developments of the invention.
Vorzugsweise weist der Verbindungsbereich einen radial nach außen Preferably, the connecting portion has a radially outward
ersteckenden Kragen auf. putting on collar.
Der Verbindungsbereich weist ein erstes Ende und ein zweites Ende auf, wobei das erste Ende in Einspritzrichtung vor dem zweiten Ende angeordnet ist. Das erste Ende ist ein railseitiges Ende, wobei das zweite Ende ein The connecting portion has a first end and a second end, wherein the first end is arranged in the injection direction in front of the second end. The first end is a rail-side end, with the second end a
brennraumseitiges Ende ist. Mit anderen Worten ist das erste Ende in einem montierten Zustand der Einspritzvorrichtung in einer Brennkraftmaschine einem Common Rail zugewandt, wobei das zweite Ende einem Brennraum der combustion chamber end is. In other words, the first end in a mounted state of the injection device in an internal combustion engine facing a common rail, wherein the second end of a combustion chamber of the
Brennkraftmaschine zugewandt ist. Internal combustion engine facing.
Besonders bevorzugt verbreitet sich der Kragen in Richtung vom ersten Ende zum zweiten Ende. Insbesondere ist der Kragen in der Form eines Particularly preferably, the collar spreads in the direction from the first end to the second end. In particular, the collar is in the shape of a
Kegelstumpfes ausgebildet. Truncated cone formed.
Der Verbindungsbereich weist bevorzugt mindestens eine Nut auf, die mit einem Absatz des Gehäuses in Eingriff steht. Der Absatz und die Nut haben The connecting region preferably has at least one groove which engages with a shoulder of the housing. The heel and the groove have
vorzugsweise komplementäre Formen. Ferner bevorzugt kann der Verbindungsbereich mindestens einen Absatz aufweisen, der mit einer Nut des Gehäuses in Eingriff steht. Der Absatz und die Nut haben vorzugsweise komplementäre Formen. preferably complementary forms. Further preferably, the connecting portion may have at least one shoulder which engages with a groove of the housing. The shoulder and the groove preferably have complementary shapes.
Vorteilhafterweise ist der Verbindungsbereich zumindest teilweise Advantageously, the connection area is at least partially
tannenbaumförmig ausgebildet.„Tannenbaumförmig" bedeutet, dass der Verbindungsbereich eine Vielzahl von Absätzen umfasst, die jeweils in einem Längsschnitt als ein rechtwinkliges Dreieck ausgebildet sind. Dabei befindet sich vorzugsweise die Hypotenuse des rechtwinkligen Dreiecks in Richtung vom ersten Ende zum zweiten Ende des Verbindungsbereichs vor der langen senkrechten Seite. "fir-tree-shaped" means that the connecting portion comprises a plurality of shoulders each formed in a longitudinal section as a right-angled triangle, wherein the hypotenuse of the right-angled triangle is preferably in the direction from the first end to the second end of the connecting portion in front of long vertical side.
Das Gehäuse weist vorzugsweise einen Gehäusebereich auf, der eingerichtet ist, ein Halteelement zum Halten der Einspritzanordnung an einem Bauteil einer Brennkraftmaschine aufzunehmen. Dabei ist der Verbindungsbereich des Einspritzventils in unmittelbarer Nähe des Gehäusebereichs angeordnet. The housing preferably has a housing area which is set up to receive a holding element for holding the injection arrangement on a component of an internal combustion engine. In this case, the connection region of the injection valve is arranged in the immediate vicinity of the housing region.
Insbesondere ist der Verbindungsbereich in einer Längsrichtung des Gehäuses vor oder nach dem Gehäusebereich bzw. oberhalb oder unterhalb des In particular, the connection area in a longitudinal direction of the housing is before or after the housing area or above or below the housing area
Gehäusebereichs angeordnet. Die Längsrichtung entspricht einer Längsachse des Gehäuses. Housing area arranged. The longitudinal direction corresponds to a longitudinal axis of the housing.
Der Verbindungsbereich dient als eine Art Verhakung, die dafür sorgt, dass sich das Gehäuse nicht setzt. The connection area serves as a kind of entanglement, which ensures that the housing does not set.
Der Verbindungsbereich ist in vorteilhafter Weise rotationssymmetrisch ausgebildet. Besonders bevorzugt erstreckt sich der Verbindungsbereich um einen kompletten Umfang des Anschlussstutzens. Alternativ kann vorzugsweise der Verbindungsbereich in Umfangsrichtung des Anschlussstutzens nur abschnittsweise ausgebildet sein. The connection region is advantageously rotationally symmetrical. Particularly preferably, the connection area extends around a complete circumference of the connecting piece. Alternatively, preferably, the connecting region in the circumferential direction of the connecting piece can be formed only in sections.
Der Anschlussstutzen ist vorzugsweise ein Drehteil. The connecting piece is preferably a rotary part.
Alternativ kann der Verbindungsbereich unsymmetrisch ausgebildet sein. So kann der Verbindungsbereich vorzugsweise einen Absatz oder eine Mehrzahl von Absätzen und/oder eine Nut und/oder eine Mehrzahl von Nuten aufweisen, die unsymmetrisch in Umfangsrichtung angeordnet sind, insbesondere keine Rotationssymmetrie aufweisen. Vorzugsweise ist das Gehäuse als Umspritzteil ausgebildet. Alternatively, the connection area may be asymmetrical. Thus, the connection region may preferably have a shoulder or a plurality of shoulders and / or a groove and / or a plurality of grooves, which are arranged asymmetrically in the circumferential direction, in particular have no rotational symmetry. Preferably, the housing is formed as a molded part.
Ferner betrifft die vorliegende Erfindung eine Brennkraftmaschine, die eine zuvor beschriebene Einspritzanordnung umfasst. Die Einspritzanordnung ist vorzugsweise an einem Bauteil, insbesondere an einem Common Rail, angeordnet. Das Common Rail ist auch als ein Verteiler zu verstehen, an dem mehrere Einspritzanordnungen angebracht werden können und welcher diese mit Fluid, insbesondere Kraftstoff, versorgen kann. Furthermore, the present invention relates to an internal combustion engine comprising a previously described injection assembly. The injection arrangement is preferably arranged on a component, in particular on a common rail. The common rail is also to be understood as a distributor to which a plurality of injection arrangements can be attached and which can supply them with fluid, in particular fuel.
Kurze Beschreibung der Zeichnungen Brief description of the drawings
Nachfolgend werden Ausführungsbeispiele der Erfindung unter Bezugnahme auf die begleitende Zeichnung im Detail beschrieben, wobei in den Hereinafter, embodiments of the invention will be described in detail with reference to the accompanying drawings, in which
Ausführungsbeispielen gleiche bzw. funktional gleiche Bauteile Teile jeweils mit dem gleichen Bezugszeichen bezeichnet sind. In der Zeichnung ist: eine schematische vereinfachte Ansicht einer Einspritzanordnung gemäß einem ersten Ausführungsbeispiel der vorliegenden Erfindung, wobei die Einspritzanordnung in einer Brennkraftmaschine angeordnet ist, eine schematische vereinfachte vergrößerte Darstellung eines Bereichs der in Figur 1 gezeigten Einspritzanordnung, eine schematische vereinfachte perspektivische Ansicht eines Anschlussstutzens, der in der Einspritzanordnung von Figur 1 vorgesehen ist. Figur 4 eine schematische vereinfachte Ansicht einer Embodiments same or functionally identical components parts are each designated by the same reference numerals. In the drawing: is a schematic simplified view of an injection assembly according to a first embodiment of the present invention, wherein the injection assembly is disposed in an internal combustion engine, a simplified schematic enlarged view of a portion of the injection assembly shown in Figure 1, a simplified schematic perspective view of a connecting piece, which is provided in the injection assembly of Figure 1. Figure 4 is a schematic simplified view of a
Einspritzanordnung gemäß einem zweiten Ausführungsbeispiel, eine schematische vereinfachte Ansicht einer Einspritzanordnung gemäß einem dritten Ausführungsbeispiel, Figur 6 eine schematische vereinfachte Ansicht einerInjection arrangement according to a second embodiment, a schematic simplified view of an injection arrangement according to a third embodiment, Figure 6 is a schematic simplified view of a
Einspritzanordnung gemäß einem vierten Ausführungsbeispiel, und Injection arrangement according to a fourth embodiment, and
Figur 7 eine schematische vereinfachte Ansicht einer Figure 7 is a schematic simplified view of a
Einspritzanordnung gemäß einem fünften Ausführungsbeispiel.  Injection arrangement according to a fifth embodiment.
Ausführungsformen der Erfindung Embodiments of the invention
Nachfolgend wird in Bezug auf die Figuren 1 bis 3 eine Einspritzanordnung 1 gemäß einem ersten Ausführungsbeispiel der Erfindung im Detail beschrieben. Hereinafter, an injection assembly 1 according to a first embodiment of the invention will be described in detail with reference to FIGS.
Die Figur 1 zeigt eine Brennkraftmaschine 10, in der die Einspritzanordnung 1 angeordnet ist. Zum Halten der Einspritzanordnung 1 an der Brennkraftmaschine 10 bzw. in einer Bohrung der Brennkraftmaschine 10 ist ein Halteelement 9 vorgesehen. Die Einspritzanordnung 1 ist insbesondere an einem Verteiler 12 bzw. Common Rail der Brennkraftmaschine 10 angebracht. 1 shows an internal combustion engine 10, in which the injection assembly 1 is arranged. To hold the injection assembly 1 to the internal combustion engine 10 and in a bore of the internal combustion engine 10, a holding element 9 is provided. The injection assembly 1 is in particular attached to a distributor 12 or common rail of the internal combustion engine 10.
Die Einspritzventilanordnung 1 , die insbesondere als eine The injection valve assembly 1, in particular as a
Kraftstoffeinspritzventil-Anordnung ausgebildet ist, umfasst ein Einspritzventil 2, ein Gehäuse 3 und einen Anschlussstutzen 4. Das Gehäuse 3 umgibt zumindest teilweise das Einspritzventil 2 und ist als Umspritzteil ausgebildet. Weiterhin ist der Anschlussstutzen 4 mit dem Einspritzventil 2 verbunden und weist einen Verbindungsbereich 40 auf, über den das Einspritzventil 2 am Gehäuse 3 formschlüssig angeordnet ist. In Figuren 1 und 2 ist das Gehäuse 3 zur besseren Übersicht transparent dargestellt. Fuel injection valve assembly is formed comprises an injection valve 2, a housing 3 and a connecting piece 4. The housing 3 at least partially surrounds the injection valve 2 and is formed as an injection-molded part. Furthermore, the connecting piece 4 is connected to the injection valve 2 and has a connection region 40, via which the injection valve 2 is arranged in a form-fitting manner on the housing 3. In Figures 1 and 2, the housing 3 is shown transparent for clarity.
Vorzugsweise ist das Einspritzventil 2 mit dem Anschlussstutzen 4 mittels eines als Rohr ausgebildeten Verlängerungselements 5 verbunden. Preferably, the injection valve 2 is connected to the connecting piece 4 by means of an extension element 5 designed as a tube.
Der Verbindungsbereich 40 weist ein erstes Ende 45 und ein zweites Ende 46 auf, wobei das erste Ende 45 in Einspritzrichtung 100 vor dem zweiten Ende 46 angeordnet ist (Figur 2). Das erste Ende 45 ist ein railseitiges Ende, wobei das zweite Ende 46 ein brennraumseitiges Ende ist. Mit anderen Worten ist das erste Ende 45 in einem montierten Zustand der Einspritzanordnung 1 in der The connection region 40 has a first end 45 and a second end 46, wherein the first end 45 is arranged in the injection direction 100 in front of the second end 46 (FIG. 2). The first end 45 is a rail-side end, with the second end 46 being a combustion chamber-side end. In other words, the first end 45 is in an assembled state of the injection assembly 1 in the
Brennkraftmaschine 10 dem Common Rail 12 zugewandt, wobei das zweite Ende 46 einem Brennraum 11 der Brennkraftmaschine 10 zugewandt ist. Eine Längsachse der Einspritzanordnung 1 ist mit dem Bezugszeichen 101 bezeichnet. Die Längsachse 101 definiert eine Längsrichtung. Internal combustion engine 10 facing the common rail 12, wherein the second end 46 faces a combustion chamber 11 of the internal combustion engine 10. A Longitudinal axis of the injection assembly 1 is designated by the reference numeral 101. The longitudinal axis 101 defines a longitudinal direction.
Wie aus den Figuren 2 und 3 ersichtlich ist, ist der Verbindungsbereich 40 in vorteilhafter Weise rotationssymmetrisch ausgebildet. Dabei erstreckt sich der Verbindungsbereich 40 um einen kompletten Umfang des Anschlussstutzens 4. As can be seen from FIGS. 2 and 3, the connection region 40 is advantageously rotationally symmetrical. In this case, the connecting region 40 extends around a complete circumference of the connecting piece 4.
In diesem Ausführungsbeispiel weist der Verbindungsbereich 40 einen radial nach außen ersteckenden Kragen 41 auf. In this embodiment, the connecting portion 40 has a collar 41 radially outwardly extending.
Besonders bevorzugt verbreitet sich der Kragen 41 in Richtung vom ersten Ende 45 zum zweiten Ende 46. Insbesondere ist der Kragen 41 kegelstumpfförmig ausgebildet. Particularly preferably, the collar 41 spreads in the direction from the first end 45 to the second end 46. In particular, the collar 41 is frusto-conical.
Der Verbindungsbereich 40 ist in einer Richtung, die der Richtung vom ersten Ende 45 zum zweiten Ende 46 entspricht, vor einem Gehäusebereich 30 angeordnet. Das heißt, dass sich das zweite Ende 46 des Verbindungsbereichs 40 vor dem Gehäusebereich 30 befindet. Der Gehäusebereich 30 dient als der Aufnahmebereich zum Aufnehmen des Halteelements 9. Die Richtung vom ersten Ende 45 zum zweiten Ende 46 entspricht der Einspritzrichtung 100. The connecting portion 40 is disposed in front of a housing portion 30 in a direction corresponding to the direction from the first end 45 to the second end 46. That is, the second end 46 of the connection portion 40 is located in front of the housing portion 30. The housing portion 30 serves as the receiving portion for receiving the holding member 9. The direction from the first end 45 to the second end 46 corresponds to the injection direction 100.
Die Figur 4 zeigt einen Bereich einer Einspritzanordnung 1 gemäß einem zweiten Ausführungsbeispiel der Erfindung. FIG. 4 shows a region of an injection arrangement 1 according to a second exemplary embodiment of the invention.
Im zweiten Ausführungsbeispiel weist der Verbindungsbereich 40 eine Nut 42 auf, die mit einem Absatz 32 des Gehäuses 3 in Eingriff steht.. Der Absatz 32 des Gehäuses 3 und die Nut 42 des Verbindungsbereiches 40 weisen komplementäre Formen auf. Insbesondere weisen der Absatz 32 und die Nut 42 ein rechteckiges Profil im Längsschnitt auf. Andere Profile sind allerdings auch möglich. Ferner sind die Nut 42 und der Absatz 32 spiralförmig ausgebildet. In the second embodiment, the connecting portion 40 has a groove 42 which is engaged with a shoulder 32 of the housing 3. The shoulder 32 of the housing 3 and the groove 42 of the connecting portion 40 have complementary shapes. In particular, the shoulder 32 and the groove 42 have a rectangular profile in longitudinal section. Other profiles are also possible. Furthermore, the groove 42 and the shoulder 32 are formed spirally.
Alternativ kann der Verbindungsbereich 40 eine Mehrzahl von Nuten 42 aufweisen, die mit einer Mehrzahl von Absätzen 32 des Gehäuses 3 in Eingriff stehen. Die Nuten 42 sind dabei in Richtung der Längsachse 101 parallel zueinander angeordnet. Ferner verläuft jede Nut 42 um den ganzen Umfang des Anschlussstutzens 4. Entsprechend sind die Absätze 32 in Richtung der Längsachse 101 parallel zueinander angeordnet. Des Weiteren erstreckt sich jeder Absatz 32 vollständig in Umfangrichtung des Gehäuses 3. Dabei können die Nuten 42 und die Absätze 32 ringförmig ausgebildet sein. Alternatively, the connection portion 40 may include a plurality of grooves 42 that engage with a plurality of shoulders 32 of the housing 3. The grooves 42 are arranged parallel to one another in the direction of the longitudinal axis 101. Further, each groove 42 extends around the entire circumference of the connecting piece 4. Accordingly, the shoulders 32 are arranged in the direction of the longitudinal axis 101 parallel to each other. Furthermore, extends each shoulder 32 completely in the circumferential direction of the housing 3. In this case, the grooves 42 and the shoulders 32 may be annular.
Wie im ersten Ausführungsbeispiel befindet sich der Verbindungsbereich 40 in Einspritzrichtung vor dem Gehäusebereich 30 angeordnet. As in the first exemplary embodiment, the connection region 40 is arranged in the injection direction in front of the housing region 30.
Die Figur 5 zeigt einen Bereich einer Einspritzanordnung 1 gemäß einem dritten Ausführungsbeispiel der Erfindung. FIG. 5 shows a region of an injection arrangement 1 according to a third exemplary embodiment of the invention.
Im fünften Ausführungsbeispiel weist der Verbindungsbereich 40 eine Mehrzahl von Absätzen 43 auf, die mit entsprechenden Nuten 31 des Gehäuses 3 in Eingriff steht. Die Absätze 43 und die Nuten 31 haben vorzugsweise In the fifth embodiment, the connecting portion 40 has a plurality of shoulders 43 which engage with corresponding grooves 31 of the housing 3. The shoulders 43 and the grooves 31 are preferably
komplementäre Formen. Insbesondere sind die Absätze 43 und die Nuten 31 ringförmig ausgebildet und weisen ein rechtförmiges Profil im Längsschnitt auf. Die Absätze 43 sind in Längsrichtung 101 parallel zueinander angeordnet. complementary forms. In particular, the shoulders 43 and the grooves 31 are annular and have a right-angled profile in longitudinal section. The paragraphs 43 are arranged in the longitudinal direction 101 parallel to each other.
Entsprechend sind die Nuten 31 in Längsrichtung 101 parallel zueinander angeordnet. Accordingly, the grooves 31 are arranged in the longitudinal direction 101 parallel to each other.
Der Verbindungsbereich 40 ist in der Einspritzrichtung 100 vor dem The connection portion 40 is in the injection direction 100 before
Gehäusebereich 30 angeordnet. Housing portion 30 is arranged.
Die Einspritzanordnung 1 gemäß einem in Figur 6 gezeigten vierten The injection assembly 1 according to a fourth shown in FIG
Ausführungsbeispiel unterscheidet sich von der Einspritzanordnung 1 gemäß dem dritten Ausführungsbeispiel dadurch, dass das Profil der Absätze 43 und der Nuten 31 dreieckförmig ausgebildet ist. Embodiment differs from the injection assembly 1 according to the third embodiment in that the profile of the shoulders 43 and the grooves 31 is formed triangular.
Ferner befindet sich der Verbindungsbereich 40 in Einspritzrichtung 100 nach dem Gehäusebereich 30. Dies bedeutet, dass das erste Ende 45 des Further, the connecting portion 40 is located in the injection direction 100 after the housing portion 30. This means that the first end 45 of the
Verbindungsbereichs 40 in der Einspritzrichtung 100 nach dem Gehäusebereich 30 angeordnet ist. Connecting portion 40 is disposed in the injection direction 100 after the housing portion 30.
Die Figur 7 zeigt einen Bereich einer Einspritzanordnung 1 gemäß einem fünften Ausführungsbeispiel der Erfindung. FIG. 7 shows a region of an injection arrangement 1 according to a fifth exemplary embodiment of the invention.
Im fünften Ausführungsbeispiel ist der Verbindungsbereich 40 tannenbaumförmig ausgestaltet. Dies bedeutet, dass der Verbindungsbereich eine Mehrzahl von Absätzen 43 umfasst, die jeweils in einem Längsschnitt ein Profil eines rechtwinkligen Dreiecks aufweisen. Dabei befindet sich die Hypotenuse jedes rechtwinkligen Dreiecks in Richtung vom ersten Ende 45 zum zweiten Ende 46 vor der langen senkrechten Seite. In the fifth exemplary embodiment, the connection region 40 is configured in the manner of a fir tree. This means that the connecting region comprises a plurality of shoulders 43, each of which has a profile in a longitudinal section have right-angled triangle. In this case, the hypotenuse of each right-angled triangle is in the direction from the first end 45 to the second end 46 in front of the long vertical side.
Weiterhin befindet sich der Verbindungsbereich 40 in der Einspritzrichtung 100 nach dem Gehäusebereich 30. Furthermore, the connection region 40 is located in the injection direction 100 after the housing region 30.
Es sei angemerkt, dass der Verbindungsbereich 40 in den Figuren 4 bis 7 im Schnitt dargestellt ist, wobei das Gehäuse 3 zum Teil transparent dargestellt ist. It should be noted that the connecting portion 40 is shown in section in Figures 4 to 7, wherein the housing 3 is shown partially transparent.
Es sei ferner angemerkt, dass je nach Anwendung der Verbindungsbereich 40 eine beliebige Kombination der oben beschriebenen Elemente aufweisen kann. It should also be noted that, depending on the application, the connection region 40 may have any combination of the elements described above.

Claims

Einspritzventilanordnung, insbesondere Kraftstoffeinspritzventil-Anordnung, umfassend: Injector valve arrangement, in particular fuel injection valve arrangement, comprising:
- ein Einspritzventil (2),  an injection valve (2),
- ein Gehäuse (3), das zumindest teilweise das Einspritzventil (2) umgibt, und  - A housing (3) which at least partially surrounds the injection valve (2), and
- einen Anschlussstutzen (4), der mit dem Einspritzventil (2) verbunden ist, und einen Verbindungsbereich (40) aufweist, über den das  - A connecting piece (4) which is connected to the injection valve (2), and a connecting portion (40), over which the
Einspritzventil (2) am Gehäuse (3) formschlüssig angeordnet ist.  Injection valve (2) on the housing (3) is arranged positively.
Einspritzventilanordnung nach Anspruch 1 , wobei der Verbindungsbereich (40) einen radial nach außen ersteckenden Kragen (41) aufweist. Injection valve assembly according to claim 1, wherein the connecting portion (40) has a collar (41) which projects radially outward.
Einspritzventilanordnung nach einem der vorherigen Ansprüche, wobei der Verbindungsbereich (40) mindestens eine Nut (41) aufweist, die mit einem Absatz (32) des Gehäuses (3) in Eingriff steht. Injection valve arrangement according to one of the preceding claims, wherein the connecting region (40) has at least one groove (41) which engages with a shoulder (32) of the housing (3).
Einspritzanordnung nach einem der vorherigen Ansprüche, wobei der Verbindungsbereich mindestens einen Absatz (43) aufweist, der mit einer Nut (31) des Gehäuses (3) in Eingriff steht. Injection arrangement according to one of the preceding claims, wherein the connection region has at least one shoulder (43) which engages with a groove (31) of the housing (3).
Einspritzanordnung nach einem der vorherigen Ansprüche, wobei der Verbindungsbereich (40) zumindest teilweise tannenbaumförmig ausgebildet ist. Injection arrangement according to one of the preceding claims, wherein the connecting region (40) is at least partially formed fir-tree-shaped.
Einspritzanordnung nach einem der vorherigen Ansprüche, wobei das Gehäuse einen Gehäusebereich (30) aufweist, der eingerichtet ist, ein Halteelement zum Halten der Einspritzanordnung (1) an einem Bauteil einer Brennkraftmaschine (10) aufzunehmen, wobei der An injection assembly according to any one of the preceding claims, wherein the housing has a housing portion (30) adapted to receive a holding member for holding the injection assembly (1) on a component of an internal combustion engine (10)
Verbindungsbereich (40) des Anschlussstutzens (4) in einer Längsrichtung (101) vor oder nach dem Gehäusebereich (30) angeordnet ist. Einspritzanordnung nach einem der vorherigen Ansprüche, wobei das Gehäuse (3) als Umspritzteil ausgebildet ist. Connecting portion (40) of the connecting piece (4) in a longitudinal direction (101) before or after the housing portion (30) is arranged. Injection arrangement according to one of the preceding claims, wherein the housing (3) is designed as an injection-molded part.
Brennkraftmaschine, umfassend eine Einspritzanordnung (1) nach einem der vorherigen Ansprüche, die an einem Bauteil (9), insbesondere Common Rail, angeordnet ist. Internal combustion engine, comprising an injection arrangement (1) according to one of the preceding claims, which is arranged on a component (9), in particular common rail.
EP18735287.7A 2017-08-28 2018-06-29 Fuel injector assembly Active EP3676489B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017214980.9A DE102017214980A1 (en) 2017-08-28 2017-08-28 Injection valve arrangement
PCT/EP2018/067542 WO2019042627A1 (en) 2017-08-28 2018-06-29 Injection valve assembly

Publications (2)

Publication Number Publication Date
EP3676489A1 true EP3676489A1 (en) 2020-07-08
EP3676489B1 EP3676489B1 (en) 2022-08-10

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ID=62784167

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EP18735287.7A Active EP3676489B1 (en) 2017-08-28 2018-06-29 Fuel injector assembly

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US (1) US20200224624A1 (en)
EP (1) EP3676489B1 (en)
JP (1) JP6900573B2 (en)
KR (1) KR20200041890A (en)
CN (1) CN111051680A (en)
DE (1) DE102017214980A1 (en)
WO (1) WO2019042627A1 (en)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3733604A1 (en) * 1987-10-05 1989-04-13 Bosch Gmbh Robert HOLE BODY FOR A FUEL INJECTION VALVE
DE19647586A1 (en) * 1996-11-18 1998-05-20 Bosch Gmbh Robert Distribution device for fuel injection systems
EP2187039B1 (en) * 2005-03-03 2014-05-07 Robert Bosch GmbH Fuel injection system
DE102005061424A1 (en) * 2005-12-22 2007-07-05 Robert Bosch Gmbh Fuel injection valve for internal combustion engine, has movable actuating part with valve seat body including saw-tooth structure at outer periphery to provide firm connection with valve seat carrier
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
DE102009028473A1 (en) * 2009-08-12 2011-02-17 Robert Bosch Gmbh connector
DE102010031277A1 (en) * 2010-07-13 2012-01-19 Robert Bosch Gmbh Fuel injector with reduced number of components
JP5819213B2 (en) * 2012-02-13 2015-11-18 株式会社ケーヒン Electromagnetic fuel injection valve
DE102012206241A1 (en) * 2012-04-17 2013-10-17 Robert Bosch Gmbh Device for holding down a valve for metering fuel
WO2015135732A1 (en) * 2014-03-14 2015-09-17 Continental Automotive Gmbh Fuel injection assembly

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DE102017214980A1 (en) 2019-02-28
WO2019042627A1 (en) 2019-03-07
JP2020531745A (en) 2020-11-05
US20200224624A1 (en) 2020-07-16
JP6900573B2 (en) 2021-07-07
KR20200041890A (en) 2020-04-22
EP3676489B1 (en) 2022-08-10
CN111051680A (en) 2020-04-21

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