EP1117925B1 - Accumulateur de carburant sous haute pression - Google Patents

Accumulateur de carburant sous haute pression Download PDF

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Publication number
EP1117925B1
EP1117925B1 EP00962180A EP00962180A EP1117925B1 EP 1117925 B1 EP1117925 B1 EP 1117925B1 EP 00962180 A EP00962180 A EP 00962180A EP 00962180 A EP00962180 A EP 00962180A EP 1117925 B1 EP1117925 B1 EP 1117925B1
Authority
EP
European Patent Office
Prior art keywords
pressure fuel
high pressure
fuel accumulator
intermediate element
fuel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP00962180A
Other languages
German (de)
English (en)
Other versions
EP1117925A1 (fr
Inventor
Kurt Frank
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 EP1117925A1 publication Critical patent/EP1117925A1/fr
Application granted granted Critical
Publication of EP1117925B1 publication Critical patent/EP1117925B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and 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
    • F02M55/02—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
    • 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
    • F02M55/005—Joints; Sealings for high pressure conduits, e.g. connected to pump outlet or to injector inlet

Definitions

  • the invention relates to a high-pressure fuel storage for a Common rail fuel injection system of an internal combustion engine, with several fittings for fuel lines.
  • a high-pressure pump delivers possibly with the aid of a prefeed pump, the Fuel to be injected from a tank in the central High-pressure fuel storage, referred to as common rail becomes.
  • the Fuel to be injected from a tank in the central High-pressure fuel storage referred to as common rail becomes.
  • the injectors are dependent on the Operating parameters of the internal combustion engine individually from the Engine electronics controlled to fuel in the combustion chamber of the Inject internal combustion engine.
  • a conventional high pressure fuel storage is e.g. in the DE 196 06 946 A1.
  • the known High-pressure fuel storage consists of an elongated, tubular body with several
  • the object of the invention is a high-pressure fuel storage the type described above in such a way that the ends the fuel lines in the fittings sufficient are mobile. Despite the sufficient mobility, the Tightness at the connection points even at high pressures to be guaranteed.
  • the inventive High-pressure fuel storage simple and inexpensive be produced.
  • the task is in a high-pressure fuel storage for a Common rail fuel injection system of an internal combustion engine, according to the preamble of claim 1 by the characterizing Characteristics of claim 1 solved.
  • the mobility of the Fuel lines in the connector significantly improved. Due to the better mobility can production and assembly-related tolerances are compensated. It also leads the elasticity of the intermediate piece to the fact that the contact pressure due to seating at the contact surfaces between High-pressure fuel storage and intermediate piece on the one hand and Intermediate piece and high-pressure fuel line, on the other hand, only in reduced to a very small extent. Because of that from the Bracing the fuel line resulting radial forces of the retaining nut or the intermediate piece is recorded is a lateral expansion of the high-pressure fuel line or the Intermediate piece prevents, so that the contact force on the at the assembly set by tightening the retaining nut value remains.
  • a particular embodiment of the invention is characterized characterized in that the intermediate piece substantially the shape a hollow cylinder having two conical faces, with complementary end faces on the fuel line and interact with the high-pressure fuel storage.
  • the conical faces By the conical faces, a good sealing effect is achieved when the complementary end faces are braced against each other.
  • Another particular embodiment of the invention is characterized characterized in that at the connecting piece an external thread is provided, with the internal thread of a Retaining nut so cooperates with the fuel line its free end against the intermediate piece, and the intermediate piece is clamped against the high-pressure fuel storage.
  • Another particular embodiment of the invention is characterized characterized in that the to the high-pressure fuel storage turned and facing away from the high-pressure fuel storage Rejuvenate the end of the intermediate piece, and that on the retaining nut formed a radial support surface for the fuel line is. Due to the symmetrical shape of the intermediate piece is simplifies its installation, because the fitter does not pay attention must, how around the intermediate piece in the connection piece is used.
  • the intermediate piece has an asymmetrical shape, it could be at the end facing the fuel line through the complementary end face of the fuel line expanded become. Such expansion is thereby prevented that the intermediate piece at least with a part of his outer circumferential surface on the inner peripheral surface of Supported connection piece.
  • Another particular embodiment of the invention is characterized in that the connecting pieces to the High-pressure fuel storage are welded.
  • FIG. 1 In the accompanying figure is a section of a Fuel high pressure accumulator according to the invention in Longitudinal section shown.
  • the illustrated High-pressure fuel tank is made of a tubular Basic body 1 with an elongated, circular cylindrical interior 6 is formed.
  • the interior 6 of the tubular body 1 is above a Cross connection 7, a connector 2 and a High-pressure fuel line 10 with a (not shown) injector of an internal combustion engine in Connection:
  • connection point On the tubular base body. 1 a connection point is provided for each injector. About that There are also other connection points for the Fuel supply, pressure sensors, etc. on the tubular Basic body 1 is provided.
  • the connector 2 has the shape of a stepped Circular cylinder with two sections, the have different diameters. At the section with the smaller diameter is the external thread educated. The end face of the section with the larger diameter is using a welded joint 3 fixedly connected to the tubular body 1.
  • the intermediate piece 9 has the Form of a hollow cylinder and is using a Retaining nut 11 between the fuel line 10 and the clamped tubular body 1. For this purpose works the internal thread of the retaining nut 11 with the external thread of the connector 2 together. In the assembled state the fuel line 10 extends through a circular recess 18, the center in the retaining nut 11th is provided.
  • connection piece 2 the intermediate piece 9, the Fuel line 10 and the retaining nut 11 is around rotationally symmetrical parts.
  • Left and right of the Rotation axis 19 are two different Embodiments of the invention shown.
  • the tapered Intermediate piece 9 When on the left side of the axis of rotation 19 illustrated embodiment, the tapered Intermediate piece 9 at its from the tubular body 1 facing away from the end 12.
  • the tapered end 12 of the Intermediate piece 9 acts with a complementary sealing cone 13 on the fuel line 10 together.
  • a support surface 14 formed on a collar 17th is present at the end of the fuel line 10th is trained.
  • a annular clamping surface 15 is formed on the front side of the retaining nut 11 .
  • the Clamping surface 15 is the on the fuel line 10th trained sealing cone 13 against the tapered end-12 of the intermediate piece 9 pressed.
  • a dash 16 is indicated that the Fuel line 10 in the assembled state by one Angle of about 10 ° can be deflected.
  • the embodiment shown is that of the tubular Base 1 opposite end 22 of the intermediate piece. 9 funnel-shaped. At the funnel-shaped end 22 of the intermediate piece 9 is a complementary Sealing cone 23 in plant, at the end of the fuel line 10 is formed. To a widening of the intermediate piece. 9 to avoid in this area is at the connector 2 a support surface 24 provided on the outer periphery of the intermediate piece 9 is present.
  • the bracing of the intermediate piece 9 between the Fuel line 10 and the tubular body 1 is achieved by a clamping surface 25, which at the Retaining nut 11 is formed.
  • a dash 26 is indicated that also in this embodiment a sufficient deflection of the fuel line 10 in built-in state is possible.
  • the mobility of the fuel line 10 is determined by the small distance between the sealing cone 13, 23 at the end of Fuel line 10 and the clamping surface 15, 25th guaranteed.
  • the size of the recess 18 must be adequately sized.

Landscapes

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

Claims (5)

  1. Accumulateur de carburant sous haute pression pour un système d'injection de carburant à rampe commune d'un moteur à combustion interne comportant plusieurs ajutages (2) pour des conduites de carburant (10),
    les ajutages (2) comportant à chaque fois une pièce intermédiaire (9) entre l'accumulateur de carburant sous haute pression (1) et les conduites de carburant (10),
    l'extrémité (12) de la pièce intermédiaire (9) à l'opposé de celle tournée vers l'accumulateur de carburant sous haute pression (1) ayant une forme diminuée (12) ou une forme en entonnoir (22), et
    un écrou chapeau (11) pour presser la conduite de carburant (10) contre l'extrémité (12) de la pièce intermédiaire (9) à l'opposé de l'accumulateur de carburant à haute pression (1),
    caractérisé en ce qu'
    au niveau de la partie rétrécie de la pièce intermédiaire (9), la conduite de carburant (10) s'appuie directement et dans la direction radiale contre une surface d'appui (14) de l'écrou-chapeau (11), ou
    la pièce intermédiaire (9) s'appuie directement au niveau de l'extrémité (22) en forme d'entonnoir et dans la direction radiale contre une surface d'appui (24) de l'ajutage de raccordement (9).
  2. Accumulateur de carburant sous haute pression selon la revendication 1,
    caractérisé en ce que
    la pièce intermédiaire (9) présente essentiellement la forme d'un cylindre creux à deux surfaces frontales coniques (8 ; 12, 22) coopérant avec des surfaces frontales complémentaires (5 ; 13, 22) de l'accumulateur de carburant sous haute pression (1) ou de la conduite de carburant (10) correspondante.
  3. Accumulateur de carburant sous haute pression selon l'une des revendications précédentes,
    caractérisé par
    un filetage extérieur sur la pièce de raccordement (2) coopérant avec le filetage intérieur de l'écrou-chapeau (11),
    la conduite de carburant (10) étant serrée par son extrémité libre contre la pièce intermédiaire (9) et cette pièce intermédiaire (9) est serrée contre l'accumulateur de carburant sous haute pression (1).
  4. Accumulateur de carburant sous haute pression selon l'une des revendications précédentes,
    caractérisé en ce que
    l'extrémité (8) de la pièce intermédiaire (9) tournée vers l'accumulateur de carburant sous haute pression (1) est rétrécie.
  5. Accumulateur de carburant sous haute pression selon l'une des revendications précédentes,
    caractérisé en ce que
    les pièces de raccordement (2) sont soudées à l'accumulateur de carburant sous haute pression (1).
EP00962180A 1999-08-03 2000-08-01 Accumulateur de carburant sous haute pression Expired - Lifetime EP1117925B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19936535 1999-08-03
DE19936535A DE19936535A1 (de) 1999-08-03 1999-08-03 Kraftstoffhochdruckspeicher
PCT/DE2000/002528 WO2001009506A1 (fr) 1999-08-03 2000-08-01 Accumulateur de carburant sous haute pression

Publications (2)

Publication Number Publication Date
EP1117925A1 EP1117925A1 (fr) 2001-07-25
EP1117925B1 true EP1117925B1 (fr) 2005-11-09

Family

ID=7917045

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00962180A Expired - Lifetime EP1117925B1 (fr) 1999-08-03 2000-08-01 Accumulateur de carburant sous haute pression

Country Status (8)

Country Link
US (1) US6609502B1 (fr)
EP (1) EP1117925B1 (fr)
JP (1) JP4518459B2 (fr)
KR (1) KR100727505B1 (fr)
AT (1) ATE309463T1 (fr)
CZ (1) CZ296998B6 (fr)
DE (2) DE19936535A1 (fr)
WO (1) WO2001009506A1 (fr)

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DE19959105A1 (de) * 1999-12-08 2001-06-21 Bosch Gmbh Robert Anschlussstutzen und Gehäuse, insbesondere Kraftstoffhochdruckspeicher, mit vorgespannt angeschweißtem Anschlussstutzen für ein Kraftstoffeinspritzsystem für Brennkraftmaschinen
DE10125439A1 (de) * 2001-05-25 2002-11-28 Bosch Gmbh Robert Hochdruckanschlußvorrichtung
DE10154645A1 (de) * 2001-11-07 2003-06-12 Siemens Ag Verfahren zum Herstellen einer Kraftstoffspeicherleitung mit einem vorgespannten Anschlussstück
US6789528B2 (en) * 2002-04-05 2004-09-14 Denso Corporation High pressure fuel supply device having plating layer and manufacturing method thereof
DE10221653A1 (de) * 2002-05-15 2003-12-04 Siemens Ag Verbindungsanordnung mit integrierter Drossel
US6886537B2 (en) * 2002-07-04 2005-05-03 Denso Corporation Accumulation type fuel injection system for engine
JP4032383B2 (ja) * 2002-09-25 2008-01-16 臼井国際産業株式会社 燃料レール及び燃料レール用主管並びにこれらの製造方法
JP2004211637A (ja) * 2003-01-07 2004-07-29 Denso Corp 高圧燃料蓄圧器
JP4438450B2 (ja) * 2003-04-07 2010-03-24 株式会社デンソー 配管継手装置およびその組付方法
JP4075838B2 (ja) * 2003-06-27 2008-04-16 株式会社デンソー 配管継手装置
DE10333721B4 (de) * 2003-07-23 2005-07-07 Benteler Automobiltechnik Gmbh Kraftstoffverteilerleiste mit einem Anschlussstück
FR2869652B1 (fr) * 2004-04-28 2006-07-07 Renault Sas Dispositif d'etancheite haute pression
EP1600626A1 (fr) * 2004-05-28 2005-11-30 Siemens VDO Automotive S.p.A. Système de raccordement
FR2872252B1 (fr) * 2004-06-25 2008-03-14 Senior Automotive Blois Sas So Dispositif de connexion
JP2006233964A (ja) * 2005-01-28 2006-09-07 Usui Kokusai Sangyo Kaisha Ltd ディーゼルエンジン用コモンレール
ATE372458T1 (de) * 2005-07-08 2007-09-15 Fiat Ricerche Anordnung zur verbindung eines kraftstoffspeichers für kraftstoff unter druck und mindestens einem injektor, für eine brennkraftmaschine
WO2009091793A1 (fr) * 2008-01-14 2009-07-23 Millennium Industries, Inc. Appareil pour coupler des composants d'un système de distribution de carburant
DE102008013575B3 (de) 2008-03-11 2009-08-13 Poppe & Potthoff Gmbh Kraftstoffverteilerbaugruppe
EP2154407A1 (fr) * 2008-07-25 2010-02-17 J.M. Martin Tiby Configuration de tuyauterie et procédé d'étanchéité pour tuyau haute pression sur un système de carburant à haute pression
JP4794645B2 (ja) * 2009-04-09 2011-10-19 株式会社オティックス フューエルデリバリパイプ
US8322004B2 (en) * 2009-04-29 2012-12-04 Caterpilar Inc. Indirect laser induced residual stress in a fuel system component and fuel system using same
US8042519B2 (en) * 2009-07-31 2011-10-25 Ford Global Technologies, Llc Common rail fuel system with integrated diverter
EP2295786B1 (fr) * 2009-08-04 2016-04-13 Wärtsilä Schweiz AG Agencement de liaison
DE102009051065B3 (de) * 2009-10-28 2011-01-20 Benteler Automobiltechnik Gmbh Kraftstoffverteiler
JP2011133006A (ja) * 2009-12-24 2011-07-07 Toyota Motor Corp 管継手構造
DE102010043366A1 (de) * 2010-11-04 2012-05-10 Robert Bosch Gmbh Vorrichtung zur mediendichten Verbindung von zwei Hochdruckbauteilen
EP2466110B1 (fr) * 2010-12-15 2015-02-25 Continental Automotive GmbH Agencement de fixation de fluide et système de fluide
DE102011052907A1 (de) * 2011-08-23 2012-11-22 L'orange Gmbh Hochdruckfeste Anschlussverbindung, insbesondere in Kraftstoff-Einspritzsystemen
DE202013103710U1 (de) * 2013-08-15 2013-08-29 Ti Automotive (Heidelberg) Gmbh Kraftstoffverteilerleiste
TR201718697A2 (tr) * 2017-11-24 2019-06-21 Bosch Sanayi Ve Tic A S Yakit enjeksi̇yon valfleri̇ i̇çi̇n bi̇r test ci̇hazi
DE102019116392A1 (de) * 2019-06-17 2020-12-17 Profil Verbindungstechnik Gmbh & Co. Kg Verfahren zum Befestigen eines Befestigungselements an einem Werkstück
US10995720B1 (en) * 2020-07-29 2021-05-04 Delphi Technologies Ip Limited Fuel system having a connection between a fuel injector and a fuel distribution conduit

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Also Published As

Publication number Publication date
ATE309463T1 (de) 2005-11-15
EP1117925A1 (fr) 2001-07-25
KR100727505B1 (ko) 2007-06-12
US6609502B1 (en) 2003-08-26
WO2001009506A1 (fr) 2001-02-08
JP4518459B2 (ja) 2010-08-04
KR20010075539A (ko) 2001-08-09
DE50011560D1 (de) 2005-12-15
CZ20011140A3 (cs) 2002-01-16
CZ296998B6 (cs) 2006-08-16
DE19936535A1 (de) 2001-02-15
JP2003506611A (ja) 2003-02-18

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