EP1865189A3 - Kraftstoffinjektor mit einem niederdruckseitig angeordneten Piezosteller - Google Patents

Kraftstoffinjektor mit einem niederdruckseitig angeordneten Piezosteller Download PDF

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Publication number
EP1865189A3
EP1865189A3 EP07106975A EP07106975A EP1865189A3 EP 1865189 A3 EP1865189 A3 EP 1865189A3 EP 07106975 A EP07106975 A EP 07106975A EP 07106975 A EP07106975 A EP 07106975A EP 1865189 A3 EP1865189 A3 EP 1865189A3
Authority
EP
European Patent Office
Prior art keywords
pressure
fuel injector
low pressure
pressure side
piezo actuator
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
EP07106975A
Other languages
English (en)
French (fr)
Other versions
EP1865189A2 (de
EP1865189B1 (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 EP1865189A2 publication Critical patent/EP1865189A2/de
Publication of EP1865189A3 publication Critical patent/EP1865189A3/de
Application granted granted Critical
Publication of EP1865189B1 publication Critical patent/EP1865189B1/de
Expired - Fee Related 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
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/02—Injectors structurally combined with fuel-injection pumps
    • F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
    • F02M57/025—Injectors structurally combined with fuel-injection pumps characterised by the pump drive hydraulic, e.g. with pressure amplification
    • 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
    • F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators
    • 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
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • 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
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • F02M63/0045—Three-way 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
    • F02M2200/70—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
    • F02M2200/701—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger mechanical
    • 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
    • F02M2547/00—Special features for fuel-injection valves actuated by fluid pressure
    • F02M2547/001—Control chambers formed by movable sleeves

Abstract

Die Erfindung bezieht sich auf einen Kraftstoffinjektor (10, 130), der über einen Hochdruckspeicherraum (12) mit unter einem Systemdruck stehenden Kraftstoff beaufschlagt ist. Es ist ein Aktor (70) vorgesehen, der einen Ventilkolben (94) eines Schaltventils (92) betätigt. Über dieses ist entweder ein Differenzdruckraum (24) eines Druckverstärkers (18) und ein Steuerraum (40) oder ein Steuerraum (40) mit einem Niederdruckbereich (80) hydraulisch verbindbar. Der Aktor (70) ist mit einer Schutzbeschichtung (74) versehen. Der als Piezosteller ausgebildete Aktor (70) ist im Niederdruckbereich (80) des Kraftstoffinjektors (10, 130) angeordnet und betätigt den Ventilkolben (94) direkt, der zumindest nahezu druckausgeglichen ist
EP07106975A 2006-06-07 2007-04-26 Kraftstoffinjektor mit einem niederdruckseitig angeordneten Piezosteller Expired - Fee Related EP1865189B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200610026381 DE102006026381A1 (de) 2006-06-07 2006-06-07 Kraftstoffinjektor mit Druckübersetzer und niederdruckseitig angeordnetem Piezosteller

Publications (3)

Publication Number Publication Date
EP1865189A2 EP1865189A2 (de) 2007-12-12
EP1865189A3 true EP1865189A3 (de) 2009-10-28
EP1865189B1 EP1865189B1 (de) 2012-10-03

Family

ID=38547697

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07106975A Expired - Fee Related EP1865189B1 (de) 2006-06-07 2007-04-26 Kraftstoffinjektor mit einem niederdruckseitig angeordneten Piezosteller

Country Status (2)

Country Link
EP (1) EP1865189B1 (de)
DE (1) DE102006026381A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006042601A1 (de) 2006-09-11 2008-03-27 Robert Bosch Gmbh Injektor zum Einspritzen von Kraftstoff
DE102008042158A1 (de) * 2008-09-17 2010-03-18 Robert Bosch Gmbh Brennstoffeinspritzventil
EP2333296B1 (de) * 2009-12-10 2013-04-17 Delphi Technologies Holding S.à.r.l. Ventilelement für eine Flüssigkeitsventilanordnung
DE102010042622A1 (de) 2010-10-19 2012-04-19 Robert Bosch Gmbh Kraftstoffinjektor, inbesondere Common-Rail-Injektor
GB201501295D0 (en) * 2015-01-27 2015-03-11 Delphi International Operations Luxembourg S.�.R.L. Servo injector

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10141110A1 (de) * 2001-08-22 2003-03-20 Bosch Gmbh Robert Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen
DE10335059A1 (de) * 2003-07-31 2005-02-17 Robert Bosch Gmbh Schaltventil für einen Kraftstoffinjektor mit Druckübersetzer
EP1584813A2 (de) * 2004-04-08 2005-10-12 Robert Bosch Gmbh Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen mit direkt ansteuerbaren Düsennadeln
EP1600627A1 (de) * 2004-05-15 2005-11-30 L'orange Gmbh Steuerventil
DE102004044811A1 (de) * 2004-09-16 2006-03-23 Robert Bosch Gmbh Steuerventil einer Einspritzdüse
DE102005038596A1 (de) * 2005-08-16 2007-02-22 Robert Bosch Gmbh Kraftstoffinjektor für eine selbstzündende Verbrennungskraftmaschine
DE102005039913A1 (de) * 2005-08-24 2007-03-08 Robert Bosch Gmbh Kraftstoffinjektor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19946841A1 (de) * 1999-09-30 2001-05-03 Bosch Gmbh Robert Ventil zum Steuern von Flüssigkeiten
EP2333296B1 (de) * 2009-12-10 2013-04-17 Delphi Technologies Holding S.à.r.l. Ventilelement für eine Flüssigkeitsventilanordnung

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10141110A1 (de) * 2001-08-22 2003-03-20 Bosch Gmbh Robert Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen
DE10335059A1 (de) * 2003-07-31 2005-02-17 Robert Bosch Gmbh Schaltventil für einen Kraftstoffinjektor mit Druckübersetzer
EP1584813A2 (de) * 2004-04-08 2005-10-12 Robert Bosch Gmbh Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen mit direkt ansteuerbaren Düsennadeln
EP1600627A1 (de) * 2004-05-15 2005-11-30 L'orange Gmbh Steuerventil
DE102004044811A1 (de) * 2004-09-16 2006-03-23 Robert Bosch Gmbh Steuerventil einer Einspritzdüse
DE102005038596A1 (de) * 2005-08-16 2007-02-22 Robert Bosch Gmbh Kraftstoffinjektor für eine selbstzündende Verbrennungskraftmaschine
DE102005039913A1 (de) * 2005-08-24 2007-03-08 Robert Bosch Gmbh Kraftstoffinjektor

Also Published As

Publication number Publication date
EP1865189A2 (de) 2007-12-12
EP1865189B1 (de) 2012-10-03
DE102006026381A1 (de) 2007-12-13

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