EP1304476A3 - Hochdruckfester Injektorkörper - Google Patents

Hochdruckfester Injektorkörper Download PDF

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Publication number
EP1304476A3
EP1304476A3 EP02015756A EP02015756A EP1304476A3 EP 1304476 A3 EP1304476 A3 EP 1304476A3 EP 02015756 A EP02015756 A EP 02015756A EP 02015756 A EP02015756 A EP 02015756A EP 1304476 A3 EP1304476 A3 EP 1304476A3
Authority
EP
European Patent Office
Prior art keywords
high pressure
valve chamber
injector body
inlet opening
pressure resistant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02015756A
Other languages
English (en)
French (fr)
Other versions
EP1304476A2 (de
EP1304476B1 (de
Inventor
Martin Grieb
Stefan Haug
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 EP1304476A2 publication Critical patent/EP1304476A2/de
Publication of EP1304476A3 publication Critical patent/EP1304476A3/de
Application granted granted Critical
Publication of EP1304476B1 publication Critical patent/EP1304476B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • 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
    • 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
    • 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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure

Landscapes

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

Abstract

Die Erfindung betrifft einen Injektorkörper für ein Kraftstoffeinspritzsystem, wobei der Injektorkörper (1) einen im wesentlichen zylindrisch geformten Ventilraum (3) aufweist, in den über eine Zulaufbohrung (2), die in einer Zulauföffnung (7) im Ventilraum (3) mündet, Kraftstoff unter Hochdruck einleitbar ist. Zur Kompensation der hohen lokalen Kerbzugspannungen in Umfangsrichtung des Ventilraumes (3) wird vorgeschlagen, zumindest im Bereich der Zulauföffnung (7) den Ventilraum (3) jeweils in Umfangsrichtung benachbart zur Zulauföffnung (7) mit Ausbuchtungen (8) zu versehen. Diese Ausbuchtungen (8) führen zu einer starken Kompensation der Kerbzugspannungen und damit zu einer Erhöhung der Hochdruckfestigkeit.
Figure 00000001
EP02015756A 2001-10-20 2002-07-13 Hochdruckfester Injektorkörper Expired - Lifetime EP1304476B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10152230A DE10152230A1 (de) 2001-10-20 2001-10-20 Hochdruckfester Injektorkörper
DE10152230 2001-10-20

Publications (3)

Publication Number Publication Date
EP1304476A2 EP1304476A2 (de) 2003-04-23
EP1304476A3 true EP1304476A3 (de) 2004-05-19
EP1304476B1 EP1304476B1 (de) 2011-09-14

Family

ID=7703405

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02015756A Expired - Lifetime EP1304476B1 (de) 2001-10-20 2002-07-13 Hochdruckfester Injektorkörper

Country Status (4)

Country Link
US (1) US6796512B2 (de)
EP (1) EP1304476B1 (de)
JP (1) JP4227393B2 (de)
DE (1) DE10152230A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007018471A1 (de) * 2007-04-19 2008-10-23 Robert Bosch Gmbh Verschneidungsbereich zwischen einer Hochdruckkammer und einem Hochdruckkanal
DE102008040383A1 (de) * 2008-07-14 2010-01-21 Robert Bosch Gmbh Hochdruckfester Kraftstoffinjektor
DE102008035356A1 (de) 2008-07-29 2010-02-04 Robert Bosch Gmbh Ventilgehäuse
WO2012103899A1 (de) * 2011-02-01 2012-08-09 Robert Bosch Gmbh Gehäuse eines druckbelasteten bauteils
DE102011101770A1 (de) * 2011-05-17 2012-08-02 L'orange Gmbh Anordnung mit einem Festkörper sowie einer darin gebildeten Verschneidung zweier Hochdruck-Fluidkanäle
AT512893B1 (de) 2013-02-05 2013-12-15 Bosch Gmbh Robert Bauelement mit ineinandermündenden Hochdruckbohrungen
DE102014212194A1 (de) * 2014-06-25 2015-12-31 Robert Bosch Gmbh Verfahren zur Reduzierung der Spannung an einer Verschneidung zweier ineinander einmündenden Kanäle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0449662A1 (de) * 1990-03-29 1991-10-02 Cummins Engine Company, Inc. Kraftstoffeinspritzdüse und Verfahren zum Entlasten von Spannungskonzentration in einer Einspritzdüsenbohrung
EP0717227A2 (de) * 1994-12-16 1996-06-19 Perkins Limited Verfahren zur Verminderung der Spannung in Abzweigungen in einem Hochdruckströmungskanalsystem, und dadurch gebildete Abzweigung
DE19826719A1 (de) * 1998-06-16 1999-12-23 Bosch Gmbh Robert Ventilsteuereinheit für ein Kraftstoffeinspritzventil
DE10022378A1 (de) * 2000-05-08 2001-11-22 Bosch Gmbh Robert Hochdruckfester Injektorkörper

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4709679A (en) * 1985-03-25 1987-12-01 Stanadyne, Inc. Modular accumulator injector
US4875658A (en) * 1986-10-08 1989-10-24 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Electromagnetic valve
JP3750126B2 (ja) * 1996-03-26 2006-03-01 株式会社デンソー 燃料噴射弁
US5755190A (en) * 1996-11-18 1998-05-26 Ronen; Avner Reciprocating machine with cooling jacket
JP3939864B2 (ja) * 1998-08-27 2007-07-04 ヤマハ発動機株式会社 筒内噴射式エンジン
US6598592B2 (en) * 2000-10-04 2003-07-29 Seimens Automotive Corporation Fuel system including a fuel injector internally mounted to a fuel rail

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0449662A1 (de) * 1990-03-29 1991-10-02 Cummins Engine Company, Inc. Kraftstoffeinspritzdüse und Verfahren zum Entlasten von Spannungskonzentration in einer Einspritzdüsenbohrung
EP0717227A2 (de) * 1994-12-16 1996-06-19 Perkins Limited Verfahren zur Verminderung der Spannung in Abzweigungen in einem Hochdruckströmungskanalsystem, und dadurch gebildete Abzweigung
DE19826719A1 (de) * 1998-06-16 1999-12-23 Bosch Gmbh Robert Ventilsteuereinheit für ein Kraftstoffeinspritzventil
DE10022378A1 (de) * 2000-05-08 2001-11-22 Bosch Gmbh Robert Hochdruckfester Injektorkörper

Also Published As

Publication number Publication date
JP2003139013A (ja) 2003-05-14
DE10152230A1 (de) 2003-04-30
US6796512B2 (en) 2004-09-28
US20030089793A1 (en) 2003-05-15
EP1304476A2 (de) 2003-04-23
JP4227393B2 (ja) 2009-02-18
EP1304476B1 (de) 2011-09-14

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