EP2250365B1 - Fuel distributor assembly - Google Patents
Fuel distributor assembly Download PDFInfo
- Publication number
- EP2250365B1 EP2250365B1 EP09720768.2A EP09720768A EP2250365B1 EP 2250365 B1 EP2250365 B1 EP 2250365B1 EP 09720768 A EP09720768 A EP 09720768A EP 2250365 B1 EP2250365 B1 EP 2250365B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- manifold
- wall
- annular groove
- bottom wall
- connection recess
- 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.)
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Classifications
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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
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49229—Prime mover or fluid pump making
- Y10T29/49231—I.C. [internal combustion] engine making
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49947—Assembling or joining by applying separate fastener
- Y10T29/49966—Assembling or joining by applying separate fastener with supplemental joining
- Y10T29/49968—Metal fusion joining
Definitions
- the invention relates to a fuel rail assembly with a manifold and at least one welded to the manifold connecting nipple for connecting a branch line.
- the invention further relates to a manifold, a connection nipple for producing such a fuel rail assembly and method for producing a fuel rail assembly.
- Such fuel rail assemblies are used for example in so-called common rail injection systems for diesel engines.
- the distributor tube is acted upon by a high-pressure pump forth with high-pressure fuel, which is supplied to individual nozzles connected by branch lines connected to the manifold.
- high-pressure fuel which is supplied to individual nozzles connected by branch lines connected to the manifold.
- Ever higher demands on the exhaust gas quality of the engines require an increase in the injection pressures and thus the pressure resistance of such fuel rail subassemblies.
- pressures in the order of 2500 bar are envisaged.
- connection nipple has a wall, the inside and outside of which tapers towards the end to be welded to the manifold and ends in an annular projection.
- the annular projection is insertable into an annular groove formed on a flat outer circumferential surface of the manifold. By fitting the projection into the groove, the welding current can be concentrated on the projection during an electric welding.
- a fuel distributor assembly is known whose nipple terminates at its end to be welded to a formed in the outer surface of the manifold groove to be welded in a circumferential tip.
- a reactor pressure vessel in which a forged nozzle housing is integrated with a forged nozzle.
- the nozzle includes a bore which leads from an inner side of the nozzle housing to the outside.
- the nozzle housing contains on its outer side, a reinforcing region into which the nozzle is machined such that an outer end of the nozzle does not extend beyond an outer surface of the reinforcing region.
- a circumferential groove is incorporated, which allows access to an outer end of the nozzle during welding.
- a high-pressure fuel storage with a hollow body and at least one transverse bore with a connection opening to the interior of the body known.
- one or more indentations and / or recesses for stress relief of the pressurized high-pressure accumulator are preferably formed in the vicinity of the transverse bore on the outer and / or inner surface of the hollow body.
- a fuel rail assembly is described in which around the mouth of a transverse bore in the outside of the manifold around a connection recess is formed, is welded to the bottom wall of the connection nipple. Radially outside the connection nipple, a radially outer region of the connection recess remains free, so that the remaining part of the bottom wall of the connection recess and its outer wall, at least in the apex region of the distributor tube, forms an annular groove at least partially surrounding the connection nipple.
- a fuel rail assembly is known in which a conically shaped end face of a connecting nipple is connected to the outside of a manifold.
- a fuel rail assembly is known with a nipple, which is welded to the bottom wall of a trained around the mouth of a transverse bore of the manifold around the connection recess.
- the outer diameter of the connection recess is larger than the outer diameter of the connection nipple, so that an annular groove extending at least partially around the connection nipple remains.
- the invention has for its object to provide a fuel rail assembly whose compressive strength is increased over conventional fuel rail assemblies.
- the connecting nipple at least partially surrounding annular groove leads to an increase in the load capacity of the connection nipple.
- the claims 7 and 8 identify embodiments of distribution pipes, as they can be used for a fuel rail assembly according to claim 1.
- Claims 10 and 11 are directed to connection nipples, as they can be used for fuel rail assemblies according to claim 1.
- Claims 9 and 10 are directed to methods for manufacturing a fuel rail assembly according to the invention.
- Fig. 1 shows a section of a manifold 10, which may be welded along its length with a plurality of nipples 12.
- a branch line not shown, connected in a conventional manner, via which an injection nozzle, in particular provided on a diesel engine injection nozzle, is supplied with fuel under high pressure.
- a longitudinal bore 14 pass from the individual transverse bores 16 through the wall of the manifold 10, for example in the radial direction.
- a transverse bore 16 is shown, which, for example, extends stepwise starting from the longitudinal bore 14 and ends in a concave mouth 18.
- connection recess 20 preferably by machining, is formed on the outside of the distributor tube 10, wherein a milling tool can be oriented on the transverse bore 16.
- the recess 20 has a the muzzle 18 facing, preferably parallel to the axis of the transverse bore 16 directed inside or inside wall 22, to which a preferably perpendicular to the axis of the longitudinal bore 14 directed bottom side or bottom wall 24 connects, via an annular groove 26 in a turn preferably parallel to the axis of the transverse bore 16 extending outside or outer wall 28 passes.
- connection nipple 12 is welded to the annular groove 26 facing region of the bottom wall 24 of the connection recess 20.
- Fig. 3 shows the part of the manifold 10, which in Fig. 1 is shown, prior to welding with the connection nipple 12th
- Fig. 4 shows the in Fig. 2 shown part of the manifold 10th
- the annular connection recess 20 is formed at a depth such that the inner wall 22 and at least the part of the bottom wall 24, with which the connection nipple 12 is welded, extend completely around the transverse bore 16.
- the outer wall 28 and the outer wall 28 freestandingly connected to the bottom wall 24 annular groove 26 are only in the apex region of the outside of the manifold 10, ie in the areas of the outside, which are adjacent to the mouth 18 of the transverse bore 16 parallel to the axis of the manifold 10, complete educated.
- the height of the outer wall 28 and then the depth of the annular groove 26 progressively decrease until, in the regions of the outer surface of the manifold 10 adjacent the mouth 18 transverse to the axis of the manifold 10, the annular groove 26 and the outer wall 28 completely missing, as in Fig. 4 shown.
- the wall of the manifold 10 is only minimally weakened or removed.
- the annular groove 26 is preferably formed such that it extends the outer wall 28 steadily and in arcuate cross-section, for example circular arc, merges into the bottom wall 24, wherein the adjoining the bottom wall 24 portion of the wall of the annular groove can advantageously be inclined to the axis of the transverse bore 16 and the annular groove in cross-section over can extend a circumferential angle ⁇ 180 °.
- the cross-sectional shape of the annular groove does not have to be circular in shape; it can be elliptical, U-shaped or otherwise suitable.
- Fig. 5 shows a cross section through the connecting nipple 12 prior to its welding to the manifold 10.
- the connecting nipple 12 is a generally cylindrical member having an inner wall, according to Fig. 5 From above, first of all has a conically tapering region 30, which merges over a cylindrical region 32 with axially parallel inner wall into a conically widening region 34.
- connection nipple 12 in the example shown according to Fig. 5 in its upper region preferably has an external thread 36, and merges via a conically widening region 38 into a cylindrical region 40, which merges via a tapered region 42 into an annular contact surface 44, which is preferably directed approximately perpendicular to the axis of the connection nipple 12 and connects the region 42 with the inside region 34.
- the annular contact surface 44 may be formed as a more or less narrow cutting edge or as a distinct annular surface with a small width. The contact surface 44 is such that, when inserting the connection nipple 12 into the connection recess 20, it completely comes into contact with the bottom wall 24, preferably radially within the transition between the bottom wall 24 and the annular groove 26.
- the nipple 12 When the nipple 12 is inserted into the terminal recess 20, it is preferably welded to the distribution tube 10 by capacitor discharge welding, whereby the contact surface 44 widened by melting the material and has an in Fig. 1 designated 46 welding zone is formed, in which the end face material of the connecting nipple 12 is welded to the material of the manifold 10 in the region of the bottom wall 24.
- connection nipple 12 is advantageously such that the inside of the connection nipple 12 does not touch the inside wall 22 of the connection recess 20 and that the annular groove 26 is covered or filled to a slight extent in its radially inner region by the material melting during welding ,
- connection nipple 12 at its end facing the manifold 10 end portion in the manner of a manifold 10 to conically tapered annular bead 48 (FIG. Fig. 5 ) is formed, and reaches the manifold 10, the strength of which is surprisingly significantly increased by preferably extending with a curved bottom annular groove 26.
- connection nipple 12 to the manifold 10 is not necessarily a capacitor discharge welding method used, but the welding can be done by laser welding and other known welding methods. It is advantageous to tune the front end of the connecting nipple 12 to the bottom wall 24 in such a way that the annular groove 26 is maintained and the smallest possible notch effect emanates from the welding point, in particular on the outside of the connecting nipple. For this, a small angle ⁇ ( Fig. 5 ) advantageous.
- the annular groove 26 has been formed in the terminal recess 20 prior to welding the terminal nipple 12 to the bottom wall 24 of the terminal recess 20.
- the annular groove 26 can be formed only after the welding of the connecting nipple 12 with the outside of the manifold 10 and the bottom wall 24 of the connection recess 20, for example by milling.
- the connection recess 20 first with opposite Fig. 3 lesser radial extent in the direction away from the transverse bore 16 are formed, so that the connection nipple 12 is inserted into the connection recess 20.
- the welding zone 46 is formed whose radial extension through the flow of the material is generally greater than the radial extent of the contact surface 44 of the not yet welded connection nipple 12.
- the Ring groove 26 is formed by, for example, radially outside of the connection nipple 12 under axial feed movement a milling tool is moved around the connection nipple 12 around.
- a part of the material of the welding zone can be removed, so that the in Fig. 1 visible undercut in the transition from the connection recess 20 to the radial outer side of the connection nipple 12 does not necessarily have to be present.
- the depth of the annular groove is advantageously deeper than the previously formed connection recess 20.
- connection nipple 12 The in Fig. 1 Visible distance between the inside of the connection nipple 12 and the inner wall 22 of the connection recess 20 is advantageously relatively small for proper centering of the connection nipple 12 in the connection recess 20. A contact should not be present in this area, however, in order to ensure that the welding takes place only in the region of the bottom wall 24 of the connection recess 20.
- Fig. 6 shows an example in which the manifold 10 and the connection nipple 12 are made, for example, by forging as a unitary material assembly.
- the connection recess is missing altogether.
- the outside of the connecting nipple 12 passes directly into the outside or surface of the distributor tube 10.
- the annular groove 26 is formed, which has a cross section similar to Fig. 1 has shown.
- the example according to Fig. 7 differs from the example according to Fig. 6 in that the radially inner side of the annular groove 26 is free of undercuts in the outside the connecting nipple 12 passes, wherein the inside wall of the annular groove 26 extends approximately parallel to the axial direction of the connecting nipple or the transverse bore 16.
- FIG. 8 shows one of the FIG. 1 similar view of another example of the assembly.
- This example has, in addition to the annular groove 26, a further inner annular groove 50, via which the inside of the connecting nipple 12 merges into the outside of the distributor tube 10.
- the inner annular groove 50 surrounds the mouth 18 of the transverse bore 16 at a distance such that the mouth 18 is sufficiently stable for pressing a front end of a branch pipe attached to the connection nipple 12, without the wall of the radially inner side of the inner annular groove 50 is deformed.
- the inner annular groove 50 can be introduced into this connection recess 20 so that the radially inner side of the inner annular groove 50 extends the inner wall 22 of the connection recess 20 into the distributor tube 10.
- the inner annular groove 50 can be formed only after the welding of the connecting nipple 12 to the connecting recess 20. Even with the one-piece with the manifold 10 training the connection nipple 12, the inner annular groove 50 can be milled in addition.
- angle of inclination a and ⁇ of the inside or outside of the conically tapering portion 42 and the radial width of the contact surface 44 are selected such that a weld zone 46 is formed, which reduces the formation of annular notches in the transition from an annular groove in the connection nipple. If an annular groove is milled only after welding of the connecting nipple 12 to the distributor pipe 10, the nipple 12 can be milled to a sufficiently wide welding zone 46 so far that the undercut in the transition from the annular bead 48 (FIG. Fig. 5 ) of the connection nipple to the manifold 10 is largely or completely eliminated.
- connection nipple 12 a branch line (not shown) can be secured in a conventional manner by means of a union nut, which presses the branch line sealingly against the conical region 30 or the mouth 18.
- the connection nipple 12 can be designed in a variety of ways and is not limited to the training with an external thread.
Description
Die Erfindung betrifft eine Kraftstoffverteilerbaugruppe mit einem Verteilerrohr und wenigstens einem mit dem Verteilerrohr verschweißten Anschlussnippel zum Anschluss einer Zweigleitung. Die Erfindung betrifft weiter ein Verteilerrohr, einen Anschlussnippel zur Herstellung einer solchen Kraftstoffverteilerbaugruppe sowie Verfahren zur Herstellung einer Kraftstoffverteilerbaugruppe.The invention relates to a fuel rail assembly with a manifold and at least one welded to the manifold connecting nipple for connecting a branch line. The invention further relates to a manifold, a connection nipple for producing such a fuel rail assembly and method for producing a fuel rail assembly.
Solche Kraftstoffverteilerbaugruppen werden beispielsweise in sogenannten Common Rail Einspritzsystemen für Dieselmotoren eingesetzt. Dabei wird das Verteilerrohr von einer Hochdruckpumpe her mit unter hohem Druck stehendem Kraftstoff beaufschlagt, der durch an das Verteilerrohr angeschlossene Zweigleitungen einzelnen Einspritzdüsen zugeführt wird. Immer höhere Anforderungen an die Abgasqualität der Motoren erfordern eine Steigerung der Einspritzdrücke und damit der Druckfestigkeit solcher Kraftstoffverteilerbaugruppen. Ins Auge gefasst sind inzwischen Drücke in der Größenordnung von 2500 bar.Such fuel rail assemblies are used for example in so-called common rail injection systems for diesel engines. In this case, the distributor tube is acted upon by a high-pressure pump forth with high-pressure fuel, which is supplied to individual nozzles connected by branch lines connected to the manifold. Ever higher demands on the exhaust gas quality of the engines require an increase in the injection pressures and thus the pressure resistance of such fuel rail subassemblies. In the meantime, pressures in the order of 2500 bar are envisaged.
Aus der
Aus der ebenfalls gattungsbildenden
Aus der
Aus der
In der
Aus der
In der
Der Erfindung liegt die Aufgabe zugrunde, eine Kraftstoffverteilerbaugruppe zu schaffen, deren Druckfestigkeit gegenüber herkömmlichen Kraftstoffverteilerbaugruppen erhöht ist.The invention has for its object to provide a fuel rail assembly whose compressive strength is increased over conventional fuel rail assemblies.
Diese Aufgabe wird mit einer Kraftstoffverteilerbaugruppe gemäß dem Anspruch 1 gelöst.This object is achieved with a fuel rail assembly according to claim 1.
Die bei den erfindungsgemäßen Kraftstoffverteilerbaugruppen vorgesehene, den Anschlussnippel zumindest teilweise umgebende Ringnut führt zu einer Erhöhung der Belastbarkeit des Anschlussnippels.The provided in the fuel distributor assemblies according to the invention, the connecting nipple at least partially surrounding annular groove leads to an increase in the load capacity of the connection nipple.
Die Unteransprüche 2 bis 6 kennzeichnen vorteilhafte Weiterbildungen der Kraftstoffverteilerbaugruppe gemäß dem Anspruch 1.The dependent claims 2 to 6 indicate advantageous developments of the fuel rail assembly according to claim 1.
Die Ansprüche 7 und 8 kennzeichnen Ausbildungen von Verteilerrohren, wie sie für eine Kraftstoffverteilerbaugruppe gemäß dem Anspruch 1 verwendet werden können.The
Die Ansprüche 10 und 11 sind auf Anschlussnippel gerichtet, wie sie für Kraftstoffverteilerbaugruppen gemäß dem Anspruch 1 verwendet werden können.
Die Ansprüche 9 und 10 sind auf Verfahren zum Herstellen einer erfindungsgemäßen Kraftstoffverteilerbaugruppe gerichtet.
Die Erfindung wird im Folgenden anhand schematischer Zeichnungen beispielsweise und mit weiteren Einzelheiten erläutert.The invention is explained below with reference to schematic drawings, for example, and with further details.
In den Figuren stellen dar:
-
Fig. 1 ein Längsschnitt durch einen Teil eines Verteilerrohrs mit damit verschweißtem Anschlussnippel, geschnitten in der Ebene I-I derFig. 2 , -
Fig. 2 einen Querschnitt durch die Anordnung gemäßFig. 1 , geschnitten in der Ebene II-II derFig. 1 , -
Fig. 3 die Ansicht des Verteilerrohrs derFig. 1 ohne damit verschweißten Anschlussnippel, -
Fig. 4 der Anschluss des Verteilerrohrs gemäßFig. 2 ohne damit verschweißten Anschlussnippel, -
Fig. 5 einen Querschnitt durch einen Anschlussnippel vor dessen Verschweißen mit dem Verteilerrohr, -
Fig. 6 eine derFig. 1 ähnliche Ansicht eines abgeänderten Beispiels, das nicht unter Anspruch 1 fällt -
Fig. 7 eine derFig. 6 ähnliche Ansicht eines weiteren Beispiels, das nicht unter Anspruch 1 fällt, und -
Fig. 8 eine derFig. 1 ähnliche Ansicht eines weiteren Beispiels, das nicht unter Anspruch 1 fällt.
-
Fig. 1 a longitudinal section through a portion of a manifold with welded nipple, cut in the plane II ofFig. 2 . -
Fig. 2 a cross section through the arrangement according toFig. 1 , cut in the level II-II of theFig. 1 . -
Fig. 3 the view of the manifold of theFig. 1 without welded nipple, -
Fig. 4 the connection of the distributor pipe according toFig. 2 without welded nipple, -
Fig. 5 a cross section through a connection nipple before its welding to the manifold, -
Fig. 6 one of theFig. 1 similar view of a modified example that does not fall under claim 1 -
Fig. 7 one of theFig. 6 similar view of another example that does not fall under claim 1, and -
Fig. 8 one of theFig. 1 similar view of another example that does not fall under claim 1.
Um die Mündung 18 herum, bevorzugt konzentrisch zur Mündung 18, ist an der Außenseite des Verteilerrohrs 10 eine Anschlussausnehmung 20, bevorzugt durch spanabhebende mechanische Bearbeitung, ausgebildet, wobei ein Fräswerkzeug an der Querbohrung 16 orientiert werden kann. Die Ausnehmung 20 weist eine der Mündung 18 zugewandte, bevorzugt parallel zur Achse der Querbohrung 16 gerichtete Innenseite bzw. Innenwand 22 auf, an die sich eine bevorzugt senkrecht zur Achse der Längsbohrung 14 gerichtete Bodenseite bzw. Bodenwand 24 anschließt, die über eine Ringnut 26 in eine wiederum bevorzugt parallel zur Achse der Querbohrung 16 verlaufende Außenseite bzw. Außenwand 28 übergeht.Around the
Der Anschlussnippel 12 ist mit dem der Ringnut 26 zugewandten Bereich der Bodenwand 24 der Anschlussausnehmung 20 verschweißt.The connection nipple 12 is welded to the
Gemäß den
Wie weiter aus
Die Außenseite des Anschlussnippels 12 weist im dargestellten Beispiel gemäß
Wenn der Anschlussnippel 12 in die Anschlussausnehmung 20 eingesetzt ist, wird er vorzugsweise durch Kondensatorentladungsverschweißung mit dem Verteilerrohr 10 verschweißt, wobei sich die Kontaktfläche 44 durch Schmelzen des Materials verbreitert und eine in
Wie aus
Mit der beschriebenen Ausführung wird eine hochfeste Verbindung zwischen dem Anschlussnippel 12, der an seinem dem Verteilerrohr 10 zugewandten Endbereich in Art eines sich zum Verteilerrohr 10 hin konisch verjüngenden Ringwulstes 48 (
Beim Verschweißen des Anschlussnippels 12 mit dem Verteilerrohr 10 muss nicht zwingend ein Kondensatorentladungsschweißverfahren eingesetzt werden, sondern die Verschweißung kann mittels Laserschweißen und anderer bekannter Schweißverfahren erfolgen. Vorteilhaft ist, das Stirnende des Anschlussnippels 12 auf die Bodenwand 24 derart abzustimmen, dass die Ringnut 26 erhalten bleibt und von der Schweißstelle, insbesondere an der Außenseite des Anschlussnippels eine möglichst geringe Kerbwirkung ausgeht. Dafür ist ein kleiner Winkel β (
Im Vorstehenden wurde eine Ausführungsform der Kraftstoffverteilerbaugruppe geschildert, bei der die Ringnut 26 vor dem Verschweißen des Anschlussnippels 12 mit der Bodenwand 24 der Anschlussausnehmung 20 in der Anschlussausnehmung 20 ausgebildet wurde. Alternativ kann die Ringnut 26 erst nach dem Verschweißen des Anschlussnippels 12 mit der Außenseite des Verteilerrohrs 10 bzw. der Bodenwand 24 der Anschlussausnehmung 20 beispielsweise durch Fräsen ausgeformt werden. In diesem Fall kann die Anschlussausnehmung 20 zunächst mit gegenüber
Der in
Das Beispiel gemäß
Ähnlich wie die Ringnut 26 in die Anschlussausnehmung 20 eingeformt, beispielsweise eingefräst werden kann, nachdem die Anschlussausnehmung 20 in das Verteilerrohr eingeformt ist (vergleiche
Die in
An den Anschlussnippel 12 kann eine Zweigleitung (nicht dargestellt) in an sich bekannter Weise mittels einer Überwurfmutter befestigt werden, die die Zweigleitung dichtend an den konischen Bereich 30 oder die Mündung 18 anpresst. Für eine Verbindung mit einer Zweigleitung kann der Anschlussnippel 12 in unterschiedlichster Weise gestaltet werden und ist nicht auf die Ausbildung mit einem Außengewinde beschränkt.At the
- 1010
- Verteilerrohrmanifold
- 1212
- Anschlussnippelnipple
- 1414
- Längsbohrunglongitudinal bore
- 1616
- Querbohrungcross hole
- 1818
- Mündungmuzzle
- 2020
- Anschlussausnehmungconnection recess
- 2222
- Innenwandinner wall
- 2424
- Bodenwandbottom wall
- 2626
- Ringnutring groove
- 2828
- Außenwandouter wall
- 3030
- BereichArea
- 3232
- zylindrischer Bereichcylindrical area
- 3434
- BereichArea
- 3636
- Außengewindeexternal thread
- 3838
- BereichArea
- 4040
- BereichArea
- 4242
- BereichArea
- 4444
- Kontaktflächecontact area
- 4646
- Schweißzonewelding zone
- 4848
- Ringwulsttorus
- 5050
- innere Ringnutinner ring groove
Claims (10)
- Fuel distributor assembly having a manifold (10) and at least one connecting nipple (12) for connecting a branch pipe to a transverse bore (16) leading through the wall of the manifold (10), wherein a connection recess (20) having an encircling inner wall (22), an encircling bottom wall (24) and an outer wall (28) present at least in the vertex portion of the outer side of the manifold (10) is formed around the outside opening (18) of the transverse bore (16), and a terminal-end surface of the connecting nipple (12) facing towards the manifold is welded to the bottom wall (24), characterized in that the outer side of the connecting nipple (12) transitions via an annular groove (26) into the outer side of the manifold, which annular groove (26) at least partly surrounds the outer side of the connecting nipple and is formed at least into those portions of the bottom wall (24), which are adjacent to the transverse bore (16)in a direction parallel to an axis of the transverse bore, wherein the annular groove (26) is formed into the manifold (10) in a depth below the level of the bottom wall (24).
- Fuel distributor assembly according to claim 1,
characterized in that the connecting nipple (12) is spaced from the inner wall (22) and from the outer wall (28) of the connection recess (20). - Fuel distributor according to claim 1 or 2,
characterized in that the annular groove (26) lengthens the outer wall (28) of the connection recess (20) towards the inner side of the manifold (10) below the level of the bottom wall (24) and the inner side of the annular groove (26) ends, in the radial direction relative to the transverse bore (16), at the outer side of the welding (46) of the connecting nipple (12) to the bottom wall (24). - Fuel distributor assembly according to one of claims 1 to 3,
characterized in that the terminal- end surface of the connecting nipple (12) is welded to the bottom wall (24) of the connection recess (20) by capacitor discharge. - Fuel distributor assembly according to any of claims 1 to 4,
characterized in that the inner side of the connecting nipple (12) transitions into an inner annular groove (50) formed in the outer side of the manifold (10), which annular groove (50) surrounds the opening (18) of the transverse bore (16) in the outer side of the manifold with a spacing therebetween. - Fuel distributor assembly according to any of claims 1 to 5,
characterized in that the annular groove (26) has an approximately circular-segment-shaped cross-section in the longitudinal cross-section through the manifold (10). - Manifold (10) for producing a fuel distributor assembly according to any of claims 1 to 4 comprising:a transverse bore (16) leading through the wall of the manifold (10) and a connection recess (20) disposed around the outside opening (18) of the transverse bore (16), the connection recess (20) having an encircling inner wall (22), an encircling bottom wall (24) and an outer wall (28) present at least in the vertex portion of the outer side of the manifold (10) and an annular groove (26) formed in the connection recess, a width of the annular groove (26), as measured in the extension of the bottom wall (24), is approximately one-half of the distance between the inner wall (22) and the outer wall (28) of the connection recess (20) and the inner side of the annular groove (26) is inclined towards the bottom wall (24) at the transition to the bottom wall.
- Manifold according to claim 7,
characterized in that the depth of the annular groove (26) is less than one-half of its width. - Method for producing a fuel distributor assembly having a manifold and at least one connecting nipple (12) welded to the manifold for connecting a branch pipe, which fuel distributor assembly comprises a transverse bore (16) leading through the wall of the manifold (10) and a connection recess (20) disposed around the outside of an opening (18) of the transverse bore (16), the connection recess (20) having an encircling inner wall (22), an encircling bottom wall (24) and an outer wall (28) present at least in the vertex portion of the outer side of the manifold (10),
which method comprises the following steps:shaping the connection recess (20) such that its outer wall (28) transitions via an annular groove (26) into the bottom wall (24), which annular groove having a depth reaching below the level of the bottom wall, and subsequentlyinserting the connecting nipple (12) into the connection recess and welding a terminal-end surface of the connecting nipple (12) facing towards the manifold (10) to a portion of the bottom wall (24) of the connection recess (20) that is located radially within the annular groove (26). - Method for producing a fuel distributor assembly having a manifold and at least one connecting nipple (12) welded to the manifold for connecting a branch pipe, which fuel distributor assembly comprises a transverse bore (16) leading through the wall of the manifold (10) and a connection recess (20) disposed around the outside opening (18) of the transverse bore (16), the connection recess (20) having an encircling inner wall (22), an encircling bottom wall (24) and an outer wall (28) present at least in the vertex portion of the outer side of the manifold (10),
which method comprises the following steps:inserting the connecting nipple (12) into the connection recess (20),welding a terminal-end surface of the connecting nipple (12) facing towards the manifold (10) to the bottom wall (24) of the connection recess (20) and subsequently shaping an annular groove (26) in the bottom wall, which annular groove at least partially surrounds the connecting nipple and has a depth reaching below the level of the bottom wall, the radial inner portion of the annular groove (26) bordering on or emanating from a welding zone (46) between the connecting nipple (12) and the bottom wall (24).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008013575A DE102008013575B3 (en) | 2008-03-11 | 2008-03-11 | Fuel rail assembly |
PCT/EP2009/001531 WO2009112191A1 (en) | 2008-03-11 | 2009-03-04 | Fuel distributor assembly |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2250365A1 EP2250365A1 (en) | 2010-11-17 |
EP2250365B1 true EP2250365B1 (en) | 2014-05-21 |
Family
ID=40755158
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09720768.2A Active EP2250365B1 (en) | 2008-03-11 | 2009-03-04 | Fuel distributor assembly |
Country Status (6)
Country | Link |
---|---|
US (1) | US8419073B2 (en) |
EP (1) | EP2250365B1 (en) |
JP (1) | JP5221684B2 (en) |
BR (1) | BRPI0909753B1 (en) |
DE (1) | DE102008013575B3 (en) |
WO (1) | WO2009112191A1 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010051004A1 (en) | 2010-11-10 | 2012-05-10 | Poppe & Potthoff Gmbh | Fuel rail for fuel rail assembly, for use in fuel injection system, has cross hole, which guides from inside of fuel rail through its wall to its outer side |
DE102012005921A1 (en) | 2012-03-26 | 2013-09-26 | Poppe & Potthoff Gmbh & Co | Welded component assembly has sealing component that is sealingly attached on outer surface of tubular body and outer surface of connection fitting, such that no particles released from weld seam enter into space outside sealing component |
JP6071132B2 (en) * | 2013-03-28 | 2017-02-01 | Kyb株式会社 | Zygote |
DE202013103710U1 (en) * | 2013-08-15 | 2013-08-29 | Ti Automotive (Heidelberg) Gmbh | Fuel rail |
USD745583S1 (en) * | 2013-10-17 | 2015-12-15 | Foseco International Limited | Fluid distribution device |
WO2016041973A1 (en) * | 2014-09-16 | 2016-03-24 | Continental Automotive Gmbh | Arrangement, in particular for a fuel delivery system, and method for the production thereof |
DE102015209263B3 (en) * | 2015-05-21 | 2016-09-22 | Continental Automotive Gmbh | High-pressure connection device, high-pressure fuel pump and method for producing a high-pressure connection device for a high-pressure fuel pump |
PT108949A1 (en) * | 2015-11-12 | 2018-04-11 | Adventech Advanced Environmental Tech Lda | REACTOR OF PHOTOCATALITICAL OZONIZATION WITH CATALYST SUPPORTED AND DIGITAL EMISSIONS OF LIGHT (LED) |
DE102017211434A1 (en) * | 2017-07-05 | 2019-01-10 | Robert Bosch Gmbh | Connecting piece for a high-pressure fuel pump and high-pressure fuel pump |
US10851931B2 (en) * | 2017-10-13 | 2020-12-01 | Saint-Gobain Performance Plastics Corporation | Fluid manifold and method of making same |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19744762A1 (en) * | 1997-03-18 | 1998-10-01 | Poppe & Potthoff Gmbh & Co | Injection device for a diesel engine |
DE19933256A1 (en) * | 1999-07-15 | 2001-01-25 | Bosch Gmbh Robert | Connection piece and housing, in particular high-pressure fuel accumulator, with prestressed welded connection piece for a fuel injection system for internal combustion engines |
DE19933254A1 (en) | 1999-07-15 | 2001-01-25 | Bosch Gmbh Robert | Connection piece and housing, in particular high-pressure fuel accumulator, with prestressed welded connection piece for a fuel injection system for internal combustion engines |
DE19936535A1 (en) | 1999-08-03 | 2001-02-15 | Bosch Gmbh Robert | High pressure fuel accumulator |
DE19948338A1 (en) * | 1999-10-07 | 2001-04-12 | Bosch Gmbh Robert | Process for processing a high-pressure fuel accumulator, high-pressure fuel accumulator and connecting piece for using the method |
US6426986B1 (en) * | 2000-08-23 | 2002-07-30 | General Electric Company | Forged nozzle shell course for a pressure vessel |
WO2002097260A2 (en) | 2001-05-29 | 2002-12-05 | Siemens Aktiengesellschaft | Device for damping vibrations in an accumulator injection system |
DE10152261A1 (en) * | 2001-10-20 | 2003-04-30 | Bosch Gmbh Robert | High pressure accumulators like high pressure fuel accumulators |
DE10221653A1 (en) * | 2002-05-15 | 2003-12-04 | Siemens Ag | Connection arrangement with integrated throttle |
US7246601B2 (en) * | 2004-09-10 | 2007-07-24 | Denso Corporation | Common rail |
JP2006233964A (en) * | 2005-01-28 | 2006-09-07 | Usui Kokusai Sangyo Kaisha Ltd | Common rail for diesel engine |
DE102005044276A1 (en) | 2005-09-16 | 2007-03-29 | Daimlerchrysler Ag | Fuel distributor |
-
2008
- 2008-03-11 DE DE102008013575A patent/DE102008013575B3/en active Active
-
2009
- 2009-03-04 WO PCT/EP2009/001531 patent/WO2009112191A1/en active Application Filing
- 2009-03-04 BR BRPI0909753 patent/BRPI0909753B1/en active IP Right Grant
- 2009-03-04 EP EP09720768.2A patent/EP2250365B1/en active Active
- 2009-03-04 JP JP2010550069A patent/JP5221684B2/en active Active
- 2009-03-04 US US12/919,915 patent/US8419073B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US20110012342A1 (en) | 2011-01-20 |
BRPI0909753B1 (en) | 2019-12-03 |
US8419073B2 (en) | 2013-04-16 |
DE102008013575B3 (en) | 2009-08-13 |
BRPI0909753A2 (en) | 2015-10-06 |
JP5221684B2 (en) | 2013-06-26 |
WO2009112191A1 (en) | 2009-09-17 |
EP2250365A1 (en) | 2010-11-17 |
JP2011513646A (en) | 2011-04-28 |
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