WO2006000487A8 - Kraftstoffeinspritzvorrichtung - Google Patents

Kraftstoffeinspritzvorrichtung

Info

Publication number
WO2006000487A8
WO2006000487A8 PCT/EP2005/051770 EP2005051770W WO2006000487A8 WO 2006000487 A8 WO2006000487 A8 WO 2006000487A8 EP 2005051770 W EP2005051770 W EP 2005051770W WO 2006000487 A8 WO2006000487 A8 WO 2006000487A8
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
control chamber
valve needle
control
injection device
Prior art date
Application number
PCT/EP2005/051770
Other languages
English (en)
French (fr)
Other versions
WO2006000487A1 (de
Inventor
Friedrich Boecking
Original Assignee
Bosch Gmbh Robert
Friedrich Boecking
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 Bosch Gmbh Robert, Friedrich Boecking filed Critical Bosch Gmbh Robert
Publication of WO2006000487A1 publication Critical patent/WO2006000487A1/de
Publication of WO2006000487A8 publication Critical patent/WO2006000487A8/de

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
    • 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
    • F02M63/0003—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure
    • F02M63/0005—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure using valves actuated by fluid 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
    • F02M63/0003—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure
    • F02M63/0007—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure using electrically actuated valves
    • 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
    • F02M2200/46—Valves, e.g. injectors, with concentric valve bodies

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

Eine Kraftstoff-Einspritzvorrichtung (1) wobei ein das Einspritzventil (8) eine äussere Ventilnadel (11) aufweist, die rohrförmig ist und eine innere Ventilnadel (20) koaxial umgibt, wobei eine Steuerkammer (35) vorgesehen ist, die im Betrieb von einer Hochdruckleitung (5) für Kraftstoff her gefüllt wird, und wobei ein Steuerventil (40) vorgesehen ist, das für seine Bestätigung mit einem Aktor (38) gekoppelt ist und das zur Beeinflussung des Drucks in der Steuerkammer (35) dient, und wobei das obere Ende der äußeren Ventilnadel (11) eine untere Begrenzung der Steuerkammer (35) bildet und die Stellung der äußeren Ventilnadel (11) in Abhängigkeit vom Druck in ihrem unteren Endbereich und dem Druck in der Steuerkammer (35) hubgesteuert ist, ist dadurch gekennzeichnet, dass die Steuerkammer (35) unmittelbar über eine erste Zuflussdrossel (37) mit einer bei Betrieb Kraftstoff unter hohem Druck führenden Leitung verbunden ist, dass das Steuerventil (40) über einen ersten Anschluss (51) mit einem Bereich niedrigen Drucks verbunden ist, wobei ein zweiter Anschluss (65) über eine Abflussdrossel (A-Drossel) (66) mit der Steuerkammer (35) verbunden ist, wobei das Steuerventil eine Sperrstellung und eine Durchlassstellung hat, und wobei die innere Ventilnadel (20) druckgesteuert ist und durch eine Feder (28) gegen ein ortsfestes Teil der Vorrichtung abgestützt ist.
PCT/EP2005/051770 2004-06-24 2005-04-21 Kraftstoffeinspritzvorrichtung WO2006000487A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410030446 DE102004030446A1 (de) 2004-06-24 2004-06-24 Kraftstoffeinspritzvorrichtung
DE102004030446.7 2004-06-24

Publications (2)

Publication Number Publication Date
WO2006000487A1 WO2006000487A1 (de) 2006-01-05
WO2006000487A8 true WO2006000487A8 (de) 2007-02-22

Family

ID=34965494

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/051770 WO2006000487A1 (de) 2004-06-24 2005-04-21 Kraftstoffeinspritzvorrichtung

Country Status (2)

Country Link
DE (1) DE102004030446A1 (de)
WO (1) WO2006000487A1 (de)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9905896D0 (en) * 1999-03-16 1999-05-05 Lucas Ind Plc Fuel injector arrangement
FI112527B (fi) * 1999-12-16 2003-12-15 Waertsilae Finland Oy Ruiskutusventtiilijärjestely
DE10053903A1 (de) * 2000-10-31 2002-05-29 Bosch Gmbh Robert Hub-/ und Druckgesteuerter Injektor mit Doppelschieber
US6637675B2 (en) * 2001-07-13 2003-10-28 Cummins Inc. Rate shaping fuel injector with limited throttling

Also Published As

Publication number Publication date
DE102004030446A1 (de) 2006-01-12
WO2006000487A1 (de) 2006-01-05

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