EP0387504A1 - Fuel injection nozzle for internal combustion engines - Google Patents

Fuel injection nozzle for internal combustion engines Download PDF

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Publication number
EP0387504A1
EP0387504A1 EP90101373A EP90101373A EP0387504A1 EP 0387504 A1 EP0387504 A1 EP 0387504A1 EP 90101373 A EP90101373 A EP 90101373A EP 90101373 A EP90101373 A EP 90101373A EP 0387504 A1 EP0387504 A1 EP 0387504A1
Authority
EP
European Patent Office
Prior art keywords
nozzle holder
union nut
connecting piece
leakage oil
nozzle
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.)
Withdrawn
Application number
EP90101373A
Other languages
German (de)
French (fr)
Inventor
Karl Dipl.-Ing. Hofmann
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 EP0387504A1 publication Critical patent/EP0387504A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/002—Arrangement of leakage or drain conduits in or from 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/004—Joints; Sealings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Definitions

  • the invention relates to a fuel injection nozzle according to the preamble of the main claim.
  • a known injection nozzle of this type (DE-OS 29 43 745)
  • connecting nipples for the leakage oil line are arranged laterally under the connecting piece for the fuel supply line on the nozzle holder.
  • This version is characterized by a particularly short overall length of the nozzle holder. If the installation conditions are unfavorable, it can happen that the connection nipples for the drain line are difficult or not accessible at all.
  • the arrangement according to the invention with the characterizing features of the main claim has the advantage that even in cases where the installation space for the injector is limited to the side, but also upwards, the connecting nipples for the leakage oil line are easily accessible.
  • the transition of the leakage oil guide from the nozzle holder into the union nut can be sealed easily and securely if the leakage oil channel running in the nozzle holder opens out at an annular shoulder of the nozzle holder formed at the transition of the connecting piece to a cylindrical section and the union nut is provided with a collar-shaped attachment which is tightened when tightened Fuel supply line engages over the cylindrical section of the nozzle holder adjoining the connecting piece and delimits a leakage oil collecting space between itself and the nozzle holder, from which a leakage oil hole in the union nut next to its threaded bore leads to the connection nipple.
  • a sufficiently large sealing ring can be conveniently accommodated between the collar-shaped extension of the union nut and the cylindrical section of the nozzle holder encompassed by it, without the diameter of the nozzle holder having to be enlarged.
  • the injection nozzle has a nozzle holder 10, to which, as is customary and therefore not shown, a nozzle body is fastened, which is provided with a valve seat in front of a nozzle opening and slidably supports a valve needle which is pressed against the valve seat by a closing spring accommodated in the nozzle holder 10 is.
  • the Nozzle holder 10 has a cylindrical section 12 of larger diameter which merges at an annular shoulder 14 into a cylindrical section 16 of smaller diameter, which in turn merges at a conical ring shoulder 18 into an externally threaded connecting piece 20 for a fuel supply line 22.
  • a fuel channel 24 leads from the connecting piece 20 to a pressure space in the nozzle body surrounding the valve needle.
  • a leakage oil channel 26 is connected to the closing spring chamber in the nozzle holder 10 and opens out from the nozzle holder 10 on the annular shoulder 18.
  • the fuel supply line 22 is fastened to the nozzle holder 10 by a union nut 30 screwed onto the connecting piece 20 with the aid of a conical clamping piece 32 and the interposition of a sealing ring 34.
  • the union nut 30 has a section 36 provided with wrench surfaces, to which an externally cylindrical threaded section 38 adjoins, which merges on the inside via a conical annular shoulder 39 into an axial annular collar 40 encompassing the cylindrical section 16 of the nozzle holder 10.
  • an annular space 42 is formed between the annular shoulders 18 and 39 on the nozzle holder 10 and on the union nut 30, in which the leak oil supplied via the leak oil channel 26 collects.
  • the annular gap between the cylindrical section 16 of the nozzle holder 10 and the ring collar 40 of the union nut 30 is sealed to the outside by an O-ring 44, which is seated in an annular groove in the nozzle holder 10.
  • connection nipples 50 are provided on the end face 48 of the union nut 30 facing away from the nozzle holder 10, each of which is connected to the annular space 42 via a larger bore section 52 and a smaller bore section 54 in the union nut 30.
  • the bore sections 52 cut between the union nut 30 and the parts used for tightening the fuel supply line 22 32, 34 formed annular space 56, so that the leak oil is also removed from this space.
  • the connection nipples 50 can be inclined at an acute angle a to the nozzle axis 58 for easier access, which is chosen so that the connection nipples 50 do not hinder the insertion of a socket wrench on the union nut 30.

Abstract

In the case of injection nozzles of the generic type the arrangement of connection nipples for an overflow oil line presents problems owing to the cramped installation conditions. The connection nipples are on the one hand to be arranged to take up as little space as possible and on the other are nevertheless to afford easy access. The present invention proposes that the connection nipples (50) be arranged on the union nut (30) which serves to clamp the fuel feed line (22), preferably on its upper face (48) remote from the nozzle holder (10). Preferred sphere of application is on diesel engines.

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einer Kraftstoff-Einspritzdüse nach der Gattung des Hauptanspruchs. Bei einer bekannten Einspritzdüse dieser Gattung (DE-OS 29 43 745) sind Anschlußnippel für die Leckölleitung seitlich unter dem Anschlußstutzen für die Kraftstoffzuleitung am Düsenhalter angeordnet. Diese Ausführung zeichnet sich durch eine besonders kurze Baulänge des Düsenhalters aus. Bei ungünstigen Ein­bauverhältnissen kann es jedoch vorkommen, das die Anschlußnippel für die Leckölleitung nur schwer oder überhaupt nicht mehr zugäng­lich sind.The invention relates to a fuel injection nozzle according to the preamble of the main claim. In a known injection nozzle of this type (DE-OS 29 43 745), connecting nipples for the leakage oil line are arranged laterally under the connecting piece for the fuel supply line on the nozzle holder. This version is characterized by a particularly short overall length of the nozzle holder. If the installation conditions are unfavorable, it can happen that the connection nipples for the drain line are difficult or not accessible at all.

Vorteile der ErfindungAdvantages of the invention

Die erfindungsgemaße Anordnung mit den kennzeichnenden Merkmalen des Hauptanspruchs hat demgegenüber den Vorteil, daß auch in den Fällen, wo der Einbauraum für die Einspritzdüse nach der Seite, aber auch nach oben hin begrenzt ist, die Anschlußnippel für die Leckölleitung gut zugänglich sind.The arrangement according to the invention with the characterizing features of the main claim has the advantage that even in cases where the installation space for the injector is limited to the side, but also upwards, the connecting nipples for the leakage oil line are easily accessible.

Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vor­teilhafte Weiterbildungen der Anordnung nach dem Hauptanspruch mög­lich.Advantageous further developments of the arrangement according to the main claim are possible through the measures listed in the subclaims.

Der Übergang der Leckölführung vom Düsenhalter in die Überwurfmutter läßt sich einfach und sicher abdichten, wenn der im Düsenhalter ver­laufende Leckölkanal an einer am Übergang des Anschlußstutzens zu einem zylindrischen Abschnitt gebildeten Ringschulter des Düsenhal­ters ausmündet und die Überwurfmutter mit einem kragenförmigen An­satz versehen ist, der bei festgespannter Kraftstoffzuleitung über den sich an den Anschlußstutzen anschließenden zylindrischen Ab­schnitt des Düsenhalters greift und zwischen sich und dem Düsen­halter einen Lecköl-Sammelraum begrenzt, von welchem eine in der Überwurfmutter neben deren Gewindebohrung verlaufende Leckölbohrung zum Anschlußnippel führt. Zwischen dem kragenförmigen Ansatz der Überwurfmutter und dem von diesem umgriffenen zylindrischen Ab­schnitt des Düsenhalters kann bequem ein ausreichend großer Dicht­ring untergebracht werden, ohne daß der Durchmesser des Düsenhalters vergrößert werden muß.The transition of the leakage oil guide from the nozzle holder into the union nut can be sealed easily and securely if the leakage oil channel running in the nozzle holder opens out at an annular shoulder of the nozzle holder formed at the transition of the connecting piece to a cylindrical section and the union nut is provided with a collar-shaped attachment which is tightened when tightened Fuel supply line engages over the cylindrical section of the nozzle holder adjoining the connecting piece and delimits a leakage oil collecting space between itself and the nozzle holder, from which a leakage oil hole in the union nut next to its threaded bore leads to the connection nipple. A sufficiently large sealing ring can be conveniently accommodated between the collar-shaped extension of the union nut and the cylindrical section of the nozzle holder encompassed by it, without the diameter of the nozzle holder having to be enlarged.

Zeichnungdrawing

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung darge­stellt und in der nachfolgenden Beschreibung näher erläutert.

  • Die einzige Figur zeigt in vergrößerter Darstellung einen Längsschnitt durch den stromaufliegenden Endbereich einer erfindungsgemäß ausge­bildeten Einspritzdüse samt angeschlossener Kraftstoffzuleitung.
An embodiment of the invention is shown in the drawing and explained in more detail in the following description.
  • The single figure shows an enlarged illustration of a longitudinal section through the upstream end region of an injection nozzle designed according to the invention together with the connected fuel feed line.

Beschreibung des AusführungsbeispielsDescription of the embodiment

Die Einspritzdüse hat einen Düsenhalter 10, an welchem, wie üblich, und daher nicht dargestellt, ein Düsenkörper befestigt ist, der mit einem Ventilsitz vor einer Düsenöffnung versehen ist und eine Ven­tilnadel verschiebbar lagert, die von einer im Düsenhalter 10 unter­gebrachten Schließfeder gegen den Ventilsitz gedrückt ist. Der Düsenhalter 10 hat einen zylindrischen Abschnitt 12 größeren Durch­messers, der an einer Ringschulter 14 in einen zylindrischen Ab­schnitt 16 kleineren Durchmessers übergeht, welcher seinerseits an einer konischen Ringschulter 18 in einen mit Außengewinde versehenen Anschlußstutzen 20 für eine Rraftstoffzuleitung 22 übergeht. Vom An­schlußstutzen 20 führt ein Rraftstoffkanal 24 zu einem die Ventilna­del umgebenden Druckraum im Düsenkörper. An die Schließfederkammer im Düsenhalter 10 ist ein Leckölkanal 26 angeschlossen, der an der Ringschulter 18 aus dem Düsenhalter 10 ausmündet.The injection nozzle has a nozzle holder 10, to which, as is customary and therefore not shown, a nozzle body is fastened, which is provided with a valve seat in front of a nozzle opening and slidably supports a valve needle which is pressed against the valve seat by a closing spring accommodated in the nozzle holder 10 is. The Nozzle holder 10 has a cylindrical section 12 of larger diameter which merges at an annular shoulder 14 into a cylindrical section 16 of smaller diameter, which in turn merges at a conical ring shoulder 18 into an externally threaded connecting piece 20 for a fuel supply line 22. A fuel channel 24 leads from the connecting piece 20 to a pressure space in the nozzle body surrounding the valve needle. A leakage oil channel 26 is connected to the closing spring chamber in the nozzle holder 10 and opens out from the nozzle holder 10 on the annular shoulder 18.

Die Kraftstoffzuleitung 22 ist durch eine auf den Anschlußstutzen 20 aufgeschraubte Überwurfmutter 30 unter Zuhilfenahme eines konischen Spannstücks 32 und Zwischenlage eines Dichtrings 34 am Düsenhalter 10 befestigt. Die Überwurfmutter 30 weist einen mit Schlüsselflächen versehenen Abschnitt 36 auf, an den sich ein außen zylindrischer Ge­windeabschnitt 38 anschließt, der innen über eine konische Ring­schulter 39 in einen den zylindrischen Abschnitt 16 des Düsenhalters 10 umgreifenden axialen Ringkragen 40 übergeht. Bei fest angeschlos­sener Kraftstoffzuleitung 22 ist zwischen den Ringschultern 18 und 39 am Düsenhalter 10 und an der Überwurfmutter 30 ein Ringraum 42 gebildet, in welchem sich das über den Leckölkanal 26 zugeführte Lecköl sammelt. Der Ringspalt zwischen dem zylindrischen Abschnitt 16 des Düsenhalters 10 und dem Ringkragen 40 der Überwurfmutter 30 ist nach außen durch einen O-Ring 44 abgedichtet, der in einer Ring­nut im Düsenhalter 10 sitzt.The fuel supply line 22 is fastened to the nozzle holder 10 by a union nut 30 screwed onto the connecting piece 20 with the aid of a conical clamping piece 32 and the interposition of a sealing ring 34. The union nut 30 has a section 36 provided with wrench surfaces, to which an externally cylindrical threaded section 38 adjoins, which merges on the inside via a conical annular shoulder 39 into an axial annular collar 40 encompassing the cylindrical section 16 of the nozzle holder 10. When the fuel supply line 22 is firmly connected, an annular space 42 is formed between the annular shoulders 18 and 39 on the nozzle holder 10 and on the union nut 30, in which the leak oil supplied via the leak oil channel 26 collects. The annular gap between the cylindrical section 16 of the nozzle holder 10 and the ring collar 40 of the union nut 30 is sealed to the outside by an O-ring 44, which is seated in an annular groove in the nozzle holder 10.

Zum Anschluß einer Leckölleitung sind an der vom Düsenhalter 10 ab­gekehrten Stirnseite 48 der Überwurfmutter 30 zwei Anschlußnippel 50 vorgesehen, die je über einen im Durchmesser größeren Bohrungsab­schnitt 52 und einen im Durchmesser kleineren Bohrungsabschnitt 54 in der Überwurfmutter 30 mit dem Ringraum 42 verbunden sind. Die Bohrungsabschnitte 52 schneiden den zwischen der Überwurfmutter 30 und den zum Festspannen der Kraftstoffzuleitung 22 dienenden Teilen 32, 34 gebildeten Ringraum 56 an, so daß auch das Lecköl aus diesem Raum abgeführt wird. Die Anschlußnippel 50 können zur leichteren Zu­gänglichkeit in einem spitzen Winkel a zur Düsenachse 58 schrägge­stellt werden, der so gewählt ist, daß die Anschlußnippel 50 das Aufstecken eines Steckschlüssels auf die Überwurfmutter 30 nicht behindern.To connect a leakage oil line, two connection nipples 50 are provided on the end face 48 of the union nut 30 facing away from the nozzle holder 10, each of which is connected to the annular space 42 via a larger bore section 52 and a smaller bore section 54 in the union nut 30. The bore sections 52 cut between the union nut 30 and the parts used for tightening the fuel supply line 22 32, 34 formed annular space 56, so that the leak oil is also removed from this space. The connection nipples 50 can be inclined at an acute angle a to the nozzle axis 58 for easier access, which is chosen so that the connection nipples 50 do not hinder the insertion of a socket wrench on the union nut 30.

Claims (4)

1. Kraftstoff-Einspritzdüse für Brennkraftmaschinen, mit einem Dü­senhalter, der mit einem Anschlußstutzen für eine Rraftstoffzulei­tung versehen ist und einen Leckölkanal enthält, der mindestens zu einem Anschlußnippel für eine Leckölleitung führt, und ferner mit einer auf den Anschlußstutzen des Düsenhalters aufgeschraubten Über­wurfmutter zum Festspannen der Kraftstoffzuleitung am Anschluß­stutzen, dadurch gekennzeichnet, daß der Anschlußnippel (50) für die Leckölleitung an der Überwurfmutter (30) befestigt ist.1. Fuel injection nozzle for internal combustion engines, with a nozzle holder, which is provided with a connecting piece for a fuel supply line and contains a leakage oil channel, which leads to at least one connection nipple for a leakage oil line, and also with a screwed onto the connecting piece of the nozzle holder for tightening the Fuel supply line on the connecting piece, characterized in that the connection nipple (50) for the leakage oil line is attached to the union nut (30). 2. Einspritzdüse nach Anspruch 1, dadurch gekennzeichnet, daß der im Düsenhalter (10) verlaufende Leckölkanal (26) an einer am Übergang des Anschlußstutzens (20) zu einem zylindrischen Abschnitt (16) ge­bildeten Ringschulter (18) des Düsenhalters (10) ausmündet und daß die Überwurfmutter (30) mit einem kragenförmigen Ansatz (40) ver­sehen ist, der bei festgespannter Kraftstoffzuleitung (22) über den sich an den Anschlußstutzen (20) anschließenden zylindrischen Ab­schnitt (16) des Düsenhalters (10) greift und zwischen sich und dem Düsenhalter (10) einen Lecköl-Sammelraum (42) begrenzt, von welchem eine in der Überwurfmutter (30) neben deren Gewindebohrung verlau­fende Leckölbohrung (52, 54) zum Anschlußnippel (50) führt.2. Injection nozzle according to claim 1, characterized in that the leakage oil channel (26) extending in the nozzle holder (10) opens at an annular shoulder (18) formed at the transition of the connecting piece (20) to a cylindrical section (16) of the nozzle holder (10) and that the union nut (30) is provided with a collar-shaped shoulder (40) which, when the fuel supply line (22) is tightened, engages over the cylindrical section (16) of the nozzle holder (10) adjoining the connecting piece (20) and between itself and the nozzle holder (10) delimits a leakage oil collecting space (42), from which a leakage oil bore (52, 54) running in the union nut (30) next to its threaded bore leads to the connection nipple (50). 3. Einspritzdüse nach Anspruch 1, dadurch gekennzeichnet, daß der Anschlußnippel (50) für die Leckölleitung an der vom Düsenhalter (10) abgekehrten Stirnseite (48) der Überwurfmutter (30) angeordnet ist.3. Injection nozzle according to claim 1, characterized in that the connecting nipple (50) for the leak oil line is arranged on the end face (48) of the union nut (30) facing away from the nozzle holder (10). 4. Einspritzdüse nach Anspruch 3, dadurch gekennzeichnet, daß der Anschlußnippel (50) für die Leckölleitung in einem spitzen Winkel (a) nach außen geneigt zur Düsenachse angeordnet ist.4. Injection nozzle according to claim 3, characterized in that the connecting nipple (50) for the leak oil line is arranged at an acute angle (a) inclined outwards to the nozzle axis.
EP90101373A 1989-03-11 1990-01-24 Fuel injection nozzle for internal combustion engines Withdrawn EP0387504A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3907958 1989-03-11
DE19893907958 DE3907958A1 (en) 1989-03-11 1989-03-11 FUEL INJECTION NOZZLE FOR INTERNAL COMBUSTION ENGINES

Publications (1)

Publication Number Publication Date
EP0387504A1 true EP0387504A1 (en) 1990-09-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP90101373A Withdrawn EP0387504A1 (en) 1989-03-11 1990-01-24 Fuel injection nozzle for internal combustion engines

Country Status (3)

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EP (1) EP0387504A1 (en)
JP (1) JPH02283856A (en)
DE (1) DE3907958A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2254654A (en) * 1991-04-12 1992-10-14 Daimler Benz Ag Leakage fuel connection of an i.c.engine fuel injector.
GB2314123A (en) * 1996-06-14 1997-12-17 Bosch Gmbh Robert Fuel supply device for a fuel injection valve for an i.c. engines
FR2783571A1 (en) * 1998-09-22 2000-03-24 Bosch Gmbh Robert FUEL INJECTOR FOR INTERNAL COMBUSTION ENGINES
FR2869652A1 (en) * 2004-04-28 2005-11-04 Renault Sas Sealing device for direct combustion engine, has seal ring defining intermediate pressure chamber, and deformed elastically under pressure of fuel in circuit, where ring is clad against inner walls of interface part and injection tube
EP1783357A1 (en) * 2005-11-02 2007-05-09 Delphi Technologies, Inc. Connecting structure for a fuel injector high pressure fuel supply
WO2010118922A1 (en) * 2009-04-17 2010-10-21 Delphi Technologies Holding S.À.R.L. A connector arrangement for a fluid system
WO2019111031A1 (en) * 2017-12-08 2019-06-13 Volvo Truck Corporation A device for a common rail fuel injection system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10002365B4 (en) * 2000-01-20 2005-12-01 Siemens Ag Injection system for fuel injection systems

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126158A (en) * 1964-03-24 Dreisin
DE2943745A1 (en) * 1979-10-30 1981-05-14 Robert Bosch Gmbh, 7000 Stuttgart FUEL INJECTION NOZZLE FOR INTERNAL COMBUSTION ENGINES
DE3330771A1 (en) * 1983-08-26 1985-03-14 Robert Bosch Gmbh, 7000 Stuttgart FUEL INJECTION DEVICE WITH AUXILIARY PUMP FOR PRIME AND MAIN INJECTION

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126158A (en) * 1964-03-24 Dreisin
DE2943745A1 (en) * 1979-10-30 1981-05-14 Robert Bosch Gmbh, 7000 Stuttgart FUEL INJECTION NOZZLE FOR INTERNAL COMBUSTION ENGINES
DE3330771A1 (en) * 1983-08-26 1985-03-14 Robert Bosch Gmbh, 7000 Stuttgart FUEL INJECTION DEVICE WITH AUXILIARY PUMP FOR PRIME AND MAIN INJECTION

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2254654A (en) * 1991-04-12 1992-10-14 Daimler Benz Ag Leakage fuel connection of an i.c.engine fuel injector.
GB2254654B (en) * 1991-04-12 1994-04-27 Daimler Benz Ag A fuel injection nozzle for an internal combustion engine
GB2314123A (en) * 1996-06-14 1997-12-17 Bosch Gmbh Robert Fuel supply device for a fuel injection valve for an i.c. engines
GB2314123B (en) * 1996-06-14 1998-07-15 Bosch Gmbh Robert Fuel supply device for a fuel injection valve for internal combustion engines
FR2783571A1 (en) * 1998-09-22 2000-03-24 Bosch Gmbh Robert FUEL INJECTOR FOR INTERNAL COMBUSTION ENGINES
FR2869652A1 (en) * 2004-04-28 2005-11-04 Renault Sas Sealing device for direct combustion engine, has seal ring defining intermediate pressure chamber, and deformed elastically under pressure of fuel in circuit, where ring is clad against inner walls of interface part and injection tube
EP1783357A1 (en) * 2005-11-02 2007-05-09 Delphi Technologies, Inc. Connecting structure for a fuel injector high pressure fuel supply
WO2010118922A1 (en) * 2009-04-17 2010-10-21 Delphi Technologies Holding S.À.R.L. A connector arrangement for a fluid system
EP2243950A1 (en) * 2009-04-17 2010-10-27 Delphi Technologies Holding S.à.r.l. A connector arrangement for a fluid system
US9109557B2 (en) 2009-04-17 2015-08-18 Delphi International Operations Luxembourg S.A.R.L. Connector arrangement for a fluid system
WO2019111031A1 (en) * 2017-12-08 2019-06-13 Volvo Truck Corporation A device for a common rail fuel injection system
US11136955B2 (en) 2017-12-08 2021-10-05 Volvo Truck Corporation Device for a common rail fuel injection system

Also Published As

Publication number Publication date
DE3907958A1 (en) 1990-09-13
JPH02283856A (en) 1990-11-21

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