EP1967727A3 - Kraftstoffinjektor mit einer verbesserten Ausführung eines Steuerventils zur Steuerung einer Düsennadel - Google Patents

Kraftstoffinjektor mit einer verbesserten Ausführung eines Steuerventils zur Steuerung einer Düsennadel Download PDF

Info

Publication number
EP1967727A3
EP1967727A3 EP08100932A EP08100932A EP1967727A3 EP 1967727 A3 EP1967727 A3 EP 1967727A3 EP 08100932 A EP08100932 A EP 08100932A EP 08100932 A EP08100932 A EP 08100932A EP 1967727 A3 EP1967727 A3 EP 1967727A3
Authority
EP
European Patent Office
Prior art keywords
needle
controlling
control valve
fuel injector
injection needle
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
EP08100932A
Other languages
English (en)
French (fr)
Other versions
EP1967727A2 (de
EP1967727B1 (de
Inventor
Hans-Christoph Magel
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 EP1967727A2 publication Critical patent/EP1967727A2/de
Publication of EP1967727A3 publication Critical patent/EP1967727A3/de
Application granted granted Critical
Publication of EP1967727B1 publication Critical patent/EP1967727B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
    • F02M63/0078—Valve member details, e.g. special shape, hollow or fuel passages in the valve member
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
    • F02M63/0078—Valve member details, e.g. special shape, hollow or fuel passages in the valve member
    • F02M63/008—Hollow valve members, e.g. members internally guided
    • 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
    • F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
    • F02M2200/304—Fuel-injection apparatus having mechanical parts, the movement of which is damped using hydraulic means

Landscapes

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

Abstract

Die vorliegende Erfindung betrifft einen Kraftstoffinjektor (1) zum Einspritzen von Kraftstoff in einen Brennraum einer Brennkraftmaschine, umfassend eine hubbeweglich in einem Injektorgehäuse (2) und/oder in einem Düsenkörper (3) geführte Düsennadel (4) zum Freigeben und/oder zum Schließen von wenigstens einer im Düsenkörper (3) eingebrachten Einspritzöffnung (5), wobei die Bewegung der Düsennadel (4) durch ein Steuerventil steuerbar ist, welches eine hubbeweglich in Richtung einer Hubachse (6) geführte Ventilnadel (7) mit einer Durchgangsbohrung aufweist, in die sich ein ruhend angeordneter Druckstift (8) hinein erstreckt, und wobei die Ventilnadel (7) endseitig eine Dichtgeometrie aufweist, die gegen einen Dichtsitz (9) dichtend zur Anlage bringbar ist, wobei die Durchgangsbohrung zwischen dem Druckstift (9) und der endseitigen Dichtgeometrie eine Strömungsverengung umfasst, um die Hubbewegung der Ventilnadel (7) fluidisch zu dämpfen.
EP08100932A 2007-03-08 2008-01-25 Kraftstoffinjektor mit einer verbesserten Ausführung eines Steuerventils zur Steuerung einer Düsennadel Not-in-force EP1967727B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007011317A DE102007011317A1 (de) 2007-03-08 2007-03-08 Kraftstoffinjektor mit einer verbesserten Ausführung eines Steuerventils zur Steuerung einer Düsennadel

Publications (3)

Publication Number Publication Date
EP1967727A2 EP1967727A2 (de) 2008-09-10
EP1967727A3 true EP1967727A3 (de) 2009-07-01
EP1967727B1 EP1967727B1 (de) 2011-08-24

Family

ID=39388333

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08100932A Not-in-force EP1967727B1 (de) 2007-03-08 2008-01-25 Kraftstoffinjektor mit einer verbesserten Ausführung eines Steuerventils zur Steuerung einer Düsennadel

Country Status (3)

Country Link
EP (1) EP1967727B1 (de)
AT (1) ATE521803T1 (de)
DE (1) DE102007011317A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007044356A1 (de) * 2007-09-17 2009-03-19 Robert Bosch Gmbh Injektor
DE102009045434A1 (de) * 2009-10-07 2011-04-14 Robert Bosch Gmbh Kraftstoffeinspritzventil
DE102010003202A1 (de) * 2010-03-24 2011-09-29 Robert Bosch Gmbh Common-Rail-Injektor mit druckausgeglichenem Schaltventil und zusätzlichem Speichervolumen
DE102011077618A1 (de) * 2011-06-16 2012-12-20 Robert Bosch Gmbh Injektor, insbesondere Kraftstoffinjektor für eine Brennkraftmaschine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1612405A1 (de) * 2004-06-30 2006-01-04 C.R.F. Societa' Consortile per Azioni Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
EP1719904A1 (de) * 2005-05-02 2006-11-08 Robert Bosch Gmbh Kraftstoffeinspritzdüse

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006050032A1 (de) * 2006-10-24 2008-04-30 Robert Bosch Gmbh Injektor mit einem eine konische Hubanschlagfläche aufweisenden Steuerventil

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1612405A1 (de) * 2004-06-30 2006-01-04 C.R.F. Societa' Consortile per Azioni Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
EP1719904A1 (de) * 2005-05-02 2006-11-08 Robert Bosch Gmbh Kraftstoffeinspritzdüse

Also Published As

Publication number Publication date
ATE521803T1 (de) 2011-09-15
EP1967727A2 (de) 2008-09-10
EP1967727B1 (de) 2011-08-24
DE102007011317A1 (de) 2008-09-11

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