EP1908952A3 - Injector for a fuel injection system - Google Patents

Injector for a fuel injection system Download PDF

Info

Publication number
EP1908952A3
EP1908952A3 EP07114227A EP07114227A EP1908952A3 EP 1908952 A3 EP1908952 A3 EP 1908952A3 EP 07114227 A EP07114227 A EP 07114227A EP 07114227 A EP07114227 A EP 07114227A EP 1908952 A3 EP1908952 A3 EP 1908952A3
Authority
EP
European Patent Office
Prior art keywords
fuel injection
injector
injection system
section
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
EP07114227A
Other languages
German (de)
French (fr)
Other versions
EP1908952A2 (en
EP1908952B1 (en
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 EP1908952A2 publication Critical patent/EP1908952A2/en
Publication of EP1908952A3 publication Critical patent/EP1908952A3/en
Application granted granted Critical
Publication of EP1908952B1 publication Critical patent/EP1908952B1/en
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
    • 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
    • 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
    • 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
    • F02M57/026—Construction details of pressure amplifiers, e.g. fuel passages or check valves arranged in the intensifier piston or head, particular diameter relationships, stop members, arrangement of ports or conduits
    • 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
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/042—The valves being provided with fuel passages
    • 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
    • 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
    • F02M2200/703—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic

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 Erfindung betrifft einen Injektor (1) für eine Kraftstoffeinspritzanlage einer Brennkraftmaschine, insbesondere in einem Fahrzeug, mit einem Injektorkörper, der einen Aktorabschnitt (2) und einen Nadelabschnitt (3) aufweist. Im Nadelabschnitt (3) ist darüber hinaus hubverstellbar eine Düsennadel (25) zum Steuern einer Einspritzung von Kraftstoff durch wenigstens ein Spritzloch (5) vorgesehen, wobei zur Erhöhung eines Kraftstoffeinspritzdruckes gegenüber einem Systemdruck ein im Nadelabschnitt (3) angeordneter Druckübersetzer (6) eingesetzt wird.

Figure imgaf001
The invention relates to an injector (1) for a fuel injection system of an internal combustion engine, in particular in a vehicle, having an injector body which has an actuator section (2) and a needle section (3). In addition, a nozzle needle (25) for controlling an injection of fuel through at least one spray hole (5) is provided in the needle section (3), wherein a pressure translator (6) arranged in the needle section (3) is used to increase a fuel injection pressure relative to a system pressure ,
Figure imgaf001
EP20070114227 2006-10-05 2007-08-13 Injector for a fuel injection system Not-in-force EP1908952B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200610047133 DE102006047133A1 (en) 2006-10-05 2006-10-05 Injector for a fuel injection system

Publications (3)

Publication Number Publication Date
EP1908952A2 EP1908952A2 (en) 2008-04-09
EP1908952A3 true EP1908952A3 (en) 2009-05-13
EP1908952B1 EP1908952B1 (en) 2012-06-06

Family

ID=38896969

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070114227 Not-in-force EP1908952B1 (en) 2006-10-05 2007-08-13 Injector for a fuel injection system

Country Status (2)

Country Link
EP (1) EP1908952B1 (en)
DE (1) DE102006047133A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009001104A1 (en) * 2009-02-24 2010-08-26 Robert Bosch Gmbh fuel injector
FI122557B (en) 2009-04-02 2012-03-30 Waertsilae Finland Oy Fuel injection arrangement for a piston engine
DE102009055267A1 (en) * 2009-12-23 2011-06-30 Robert Bosch GmbH, 70469 Pressure compensated fuel injector with bypass and minimized valve volume
GB201204878D0 (en) * 2012-03-20 2012-05-02 Lietuvietis Vilis I Nil inertia fuel pressure actuated inward opening direct injector
DE102012210953A1 (en) * 2012-06-27 2014-01-02 Robert Bosch Gmbh Fuel injection valve for internal combustion engines
DE102012110240A1 (en) * 2012-10-26 2014-04-30 L'orange Gmbh Fuel injection injector for internal combustion engines

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1416152A1 (en) * 2002-10-31 2004-05-06 Robert Bosch Gmbh Valve for control of fluids with supply of pressurized fluid
DE102004015744A1 (en) * 2004-03-31 2005-10-13 Robert Bosch Gmbh Common rail injector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1416152A1 (en) * 2002-10-31 2004-05-06 Robert Bosch Gmbh Valve for control of fluids with supply of pressurized fluid
DE102004015744A1 (en) * 2004-03-31 2005-10-13 Robert Bosch Gmbh Common rail injector

Also Published As

Publication number Publication date
EP1908952A2 (en) 2008-04-09
EP1908952B1 (en) 2012-06-06
DE102006047133A1 (en) 2008-04-10

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