EP1190172A1 - Element structurel, en particulier piece haute pression pour systemes d'injection de carburant, et procede de realisation d'un element structurel de ce type - Google Patents

Element structurel, en particulier piece haute pression pour systemes d'injection de carburant, et procede de realisation d'un element structurel de ce type

Info

Publication number
EP1190172A1
EP1190172A1 EP01915031A EP01915031A EP1190172A1 EP 1190172 A1 EP1190172 A1 EP 1190172A1 EP 01915031 A EP01915031 A EP 01915031A EP 01915031 A EP01915031 A EP 01915031A EP 1190172 A1 EP1190172 A1 EP 1190172A1
Authority
EP
European Patent Office
Prior art keywords
component
bore
flattening
flattened
diameter
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Withdrawn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
EP01915031A
Other languages
German (de)
English (en)
Inventor
Friedrich Boecking
Steffen Jung
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 EP1190172A1 publication Critical patent/EP1190172A1/fr
Withdrawn legal-status Critical Current

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
    • 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
    • F02M55/008—Arrangement of fuel passages inside of injectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/28—Making tube fittings for connecting pipes, e.g. U-pieces
    • B21C37/29—Making branched pieces, e.g. T-pieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/28—Making tube fittings for connecting pipes, e.g. U-pieces
    • B21C37/29—Making branched pieces, e.g. T-pieces
    • B21C37/292—Forming collars by drawing or pushing a rigid forming tool through an opening in the tube wall
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/03—Fuel-injection apparatus having means for reducing or avoiding stress, e.g. the stress caused by mechanical force, by fluid pressure or by temperature variations

Definitions

  • Component in particular high-pressure part for fuel injection systems, and method for producing such a component
  • the invention relates to a component according to the preamble of patent claim 1 and to a method according to the preamble of patent claim 8.
  • GB 2 322 919, 2 322 920, 2 322 321 and 2 322 922 and DE 198 relate to the prior art 08 894.A1 called.
  • CR injectors Common Rail
  • CR Common Rail
  • these components in fuel injection systems are not only under very high internal pressure, but moreover the internal pressure is subject to periodic strong fluctuations (so-called swelling internal pressure), high strength requirements must be made accordingly.
  • the key factor here is the strength of the intersection of the holes.
  • the object of the invention is to further increase the strength of bore intersections in components of the type mentioned against the internal pressure loads that occur.
  • the object is achieved with a component of the type mentioned in the physical aspect by the characterizing features of claim 1 and in procedural terms by the characterizing measures of claim 8.
  • Disadvantageous refinements of the invention - as far as the part in question is concerned - can be found in patent claims 2 - 7 and - as far as the procedural part of the invention is concerned - patent claims 8 - 15.
  • the desired increase in the strength of the component results from the specifically generated residual compressive stresses directly at the most stressed part of the component, the intersection of the holes.
  • the increased strength of the component at the extremely stressed points mentioned also results in better material utilization.
  • FIG. 1 shows an embodiment of a CR injector, shown in cross section, the component being still undeformed
  • FIG. 2 shows the subject of FIG. 1, in cross-sectional representation corresponding to FIG. 1 (section II-II in FIG. 3), after the component has been formed without cutting,
  • FIG. 3 the object of FIG. 2, viewed in the direction of arrow "A”, 4 shows a variant of a CR injector, somewhat modified compared to FIGS. 1-3, in a cross-sectional representation corresponding to FIG. 1 or 2, with the component still undeformed,
  • FIG. 5 shows the subject of FIG. 4, in a corresponding cross-sectional representation, but after the component has been formed without cutting
  • FIG. 6 shows a CR injector according to FIG. 1, in a corresponding cross-sectional representation (section VI - VI in FIG. 7), with the die inserted, and
  • FIGS. 1-3 10 denotes an essentially cylindrical component, which is part of the so-called CR injector.
  • the component 10 In its prefabricated state shown in FIG. 1, the component 10 has a continuous bore 11 with a circular cross section.
  • a second bore 12 of substantially smaller cross-section opens at a right angle to the first bore 11 at 13.
  • FIGS. 1 and 2 make it clear that the central axes 14, 15 of the two intersecting bores 11, 12 do not meet in the center of the component 10.
  • the second bore 12 thus opens eccentrically into the first bore 11.
  • FIG. 2 shows that the - in the partially machined state according to FIG. 1 still circular - first bore 11 has a flattening 16 in the area of intersection 13 of the two bores 11, 12.
  • the flattening 16 is deliberately intended consequence of a non-cutting shaping of the component 10 caused by pressurization from outside (in the direction of the arrow 17) by means of a rectangular stamp 18 (see FIG. 1).
  • FIGS. 2 and 3 there is a groove-shaped deformation 19 on the outer circumference of the component 10, which, however, like the flattening 16 produced by the pressurization, only affects the area of the second bore 12 or its intersection point 13 limited with the first bore 11.
  • FIGS. 4 and 5 and numbered 10 a there is constructed very similarly to the component 10 according to FIGS. 1-3.
  • the component 10 a in its processed state has a non-continuous starting bore 20 which is directed towards the intersection 13 of the two bores 11, 12.
  • a stamp 22 is inserted into the start bore 20 and subjected to force in the direction of the arrow 23.
  • the stamp 22 can have a circular or oval cross section.
  • a special feature of the variant according to FIGS. 6 and 7 is that in the through bore 11 of the component 10 - which otherwise corresponds to the embodiment according to FIG. 1 - a die, designated overall by 24, is inserted.
  • the die 24 consists of two essentially horizontally divided "halves" 25, 26 which, when joined together, result in a circular cross section of the die 24, which corresponds to the cross section of the bore 11.
  • the upper half 26 of the die 24 has a trough-shaped depression 27 at the intersection 13 of the two bores 11, 12.
  • the material of the component 10 deforms in accordance with the aforementioned Shape of the die recess 27 and into it so that (only) at the intersection 13 of the two bores 11, 12 there is a corresponding local flattening of the bore 11.
  • the die 24 and trough-shaped recess 27 support the shaping of the flattening and thus the creation of the desired residual compressive stresses in the material area of the intersection 13.

Landscapes

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

Abstract

La présente invention concerne un élément structurel, en particulier une pièce haute pression (10, 10a) destinée à des systèmes d'injection de carburant, ledit élément structurel comprenant des orifices (11, 12) qui se recoupent. Dans ledit élément structurel, au moins un (11) des deux orifices (11, 12) est formé de façon aplatie, et l'élément structurel (10, 10a) présente des contraintes internes de compression dans la zone de l'aplatissement de l'orifice (16, 21, 27). Cela permet d'obtenir une augmentation de la résistance mécanique de l'élément structurel (10, 10a) dans la zone d'intersection (13) des deux orifices (11, 12).
EP01915031A 2000-03-16 2001-02-22 Element structurel, en particulier piece haute pression pour systemes d'injection de carburant, et procede de realisation d'un element structurel de ce type Withdrawn EP1190172A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10012961A DE10012961A1 (de) 2000-03-16 2000-03-16 Bauteil, insbesondere Hochdruckteil für Kraftstoff-Einspritzsysteme, und Verfahren zur Herstellung eines solchen Bauteils
DE10012961 2000-03-16
PCT/DE2001/000676 WO2001069074A1 (fr) 2000-03-16 2001-02-22 Element structurel, en particulier piece haute pression pour systemes d'injection de carburant, et procede de realisation d'un element structurel de ce type

Publications (1)

Publication Number Publication Date
EP1190172A1 true EP1190172A1 (fr) 2002-03-27

Family

ID=7635049

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01915031A Withdrawn EP1190172A1 (fr) 2000-03-16 2001-02-22 Element structurel, en particulier piece haute pression pour systemes d'injection de carburant, et procede de realisation d'un element structurel de ce type

Country Status (8)

Country Link
US (1) US6634335B2 (fr)
EP (1) EP1190172A1 (fr)
JP (1) JP2003527531A (fr)
KR (1) KR20020023219A (fr)
CZ (1) CZ20014107A3 (fr)
DE (1) DE10012961A1 (fr)
RU (1) RU2001133351A (fr)
WO (1) WO2001069074A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10143519A1 (de) * 2001-09-05 2003-03-27 Siemens Ag Kraftstoffhochdruckspeicher für ein Speichereinspritzsystem
US6789528B2 (en) * 2002-04-05 2004-09-14 Denso Corporation High pressure fuel supply device having plating layer and manufacturing method thereof
DE10239379B4 (de) * 2002-08-25 2005-02-03 Umformtechnik Bäuerle GmbH Verfahren zur Bearbeitung eines Werkstücks für einen Kraftstoffhochdruckspeicher und Werkstück zur Anwendung des Verfahrens
JP2004092551A (ja) * 2002-09-02 2004-03-25 Usui Kokusai Sangyo Kaisha Ltd ディーゼルエンジン用コモンレール
DE10247323A1 (de) * 2002-10-10 2004-04-22 Robert Bosch Gmbh Innendruckbelastetes Bauteil, insbesondere für die Kraftstoffeinspritzung für Brennkraftmaschinen mit einem variablem Innendurchmesser
US8141910B2 (en) * 2004-11-01 2012-03-27 Weise Gary K Plumbing apparatus
KR100812993B1 (ko) * 2005-12-08 2008-03-13 한국전자통신연구원 대규모 개체의 영역분할 방법과 이를 이용한 시뮬레이션 및 렌더링 방법
DE102007018471A1 (de) 2007-04-19 2008-10-23 Robert Bosch Gmbh Verschneidungsbereich zwischen einer Hochdruckkammer und einem Hochdruckkanal
EP2392816B1 (fr) 2010-06-03 2013-10-09 Delphi Technologies Holding S.à.r.l. Détente d'un système d'écoulement fluidique pressurisé
DE102011075054A1 (de) * 2011-05-02 2012-11-08 Robert Bosch Gmbh Brennstoffverteiler
JP6358162B2 (ja) * 2015-04-24 2018-07-18 株式会社デンソー 燃料供給システム

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9703510D0 (en) 1997-02-20 1997-04-09 Kvaerner Clecim Cont Casting Continuous casting method and apparatus therefore
GB2322819B (en) 1997-03-03 2000-12-13 Usui Kokusi Sangyo Kaisha Ltd Method for improving fatique strength due to repeated pressure at branch hole part in member for high pressure fluid.
CA2230744A1 (fr) * 1997-03-03 1998-09-03 Usui Kokusai Sangyo Kaisha Limited Rampe commune et methode de fabrication
CA2230742A1 (fr) * 1997-03-03 1998-09-03 Usui Kokusai Sangyo Kaisha Limited Rampe commune et methode de fabrication
US6126208A (en) * 1997-03-03 2000-10-03 Usui Kokusai Sangyo Kaisha Limited Common rail and method of manufacturing the same
JP3352350B2 (ja) 1997-03-04 2002-12-03 臼井国際産業株式会社 コモンレール
DE19736191A1 (de) 1997-08-20 1999-02-25 Siemens Ag Druckbehälter mit Anschlußbohrung
US6263862B1 (en) * 1998-03-02 2001-07-24 Usui Kokusai Sangyo Kaisha Limited Common rail and method of manufacturing the same
DE19948338A1 (de) * 1999-10-07 2001-04-12 Bosch Gmbh Robert Verfahren zur Bearbeitung eines Kraftstoffhochdruckspeichers, Kraftstoffhochdruckspeicher und Anschlussstutzen zur Anwendung des Verfahrens
DE10056405B4 (de) * 2000-11-14 2005-06-16 Robert Bosch Gmbh Kraftstoffhochdruckspeicher für ein Kraftstoffeinspritzsystem für Brennkraftmaschinen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0169074A1 *

Also Published As

Publication number Publication date
JP2003527531A (ja) 2003-09-16
CZ20014107A3 (cs) 2003-04-16
US20020113150A1 (en) 2002-08-22
DE10012961A1 (de) 2001-09-20
WO2001069074A1 (fr) 2001-09-20
KR20020023219A (ko) 2002-03-28
US6634335B2 (en) 2003-10-21
RU2001133351A (ru) 2003-08-20

Similar Documents

Publication Publication Date Title
DE19808894C2 (de) Verfahren zum Erhöhen der Ermüdungsfestigkeit aufgrund wiederholten Druckes an einem Abzweigloch in einem Bauteil für Flüssigkeit unter hohem Druck, Abzweiglochteil eines Bauteiles für Flüssigkeit unter hohem Druck, erzeugt durch das Verfahren, und Bauteil für Flüssigkeiten unter hohem Druck mit eingebautem Schieber, welcher das Abzweigloch aufweist
DE102008047531B3 (de) Halterohr für Ausstattungseinrichtungen von Fahrzeuginnenräumen sowie Verfahren und Vorrichtung zum Erzeugen einer Aussparung in einem Halterohr
EP2739433A1 (fr) Element de liaison
EP1190172A1 (fr) Element structurel, en particulier piece haute pression pour systemes d'injection de carburant, et procede de realisation d'un element structurel de ce type
DE102006019341B3 (de) Axialzapfen, vorzugsweise zur Verwendung als Spurstangenbauteil
EP1413744B1 (fr) Accumulateur de pression pour une rampe d'injection commune
DE102011086853A1 (de) Nullpunktspannsystem
EP1440236A1 (fr) Accumulateur haute pression, en particulier accumulateur haute pression pour carburant
DE102019206037A1 (de) Anordnung für ein Einlassventil, Verfahren zum Herstellen einer Anordnung für ein Einlassventil und Kraftstoffhochdruckpumpe für ein Kraftfahrzeug
DE102015009153A1 (de) Herstellungsverfahren eines Leitungsbauteils
DE10314435A1 (de) Lagerschale mit mindestens einem Haltenocken und Verfahren zu ihrer Herstellung
DE102011121512A1 (de) Winkelwalzen
DE102013226606A1 (de) Fluidverteiler mit einem Druckspeicher
EP1795743B1 (fr) Filtre-tige
DE102021102932B3 (de) Hydrauliksteuereinheit aufweisend Zwischenplatte mit bereichsweise verfestigter Beschichtung
DE202013011468U1 (de) Rohrverteiler
WO2007073984A1 (fr) Composant destine a etre utilise dans des installations d'injection de carburant
EP1731750B1 (fr) Dispositif avec jonction de perçages
DE102018127527B4 (de) Zug- oder Druckstange oder Verriegelungsmutter für eine Formgebungsmaschine; Schließeinheit einer Formgebungsmaschine oder Formgebungsmaschine mit einer Schließeinheit und Verfahren zur Herstellung einer Zug- oder Druckstange oder Verriegelungsmutter für eine Formgebungsmaschine
EP2094997A1 (fr) Piston pour un moteur thermique
DE2448657A1 (de) Gelenk, insbesondere schwenkgelenk fuer einen abfederungsarm eines fahrzeugrades
DE202020003643U1 (de) Distanzelement für einen Kraftstoffverteiler sowie Kraftstoffverteiler
WO2003062654A1 (fr) Procede d'usinage de manetons d'un vilebrequin
DE102020005237A1 (de) Distanzelement für einen Kraftstoffverteiler, Kraftstoffverteiler und Verfahren zur Herstellung von diesen
EP1576280B1 (fr) Dispositif comprenant un plan d'etancheite situe entre deux corps

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

17P Request for examination filed

Effective date: 20020320

RBV Designated contracting states (corrected)

Designated state(s): DE ES FR GB IT

17Q First examination report despatched

Effective date: 20041007

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20050419