EP2336543A3 - Fuel injector valve for combustion engines - Google Patents

Fuel injector valve for combustion engines Download PDF

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Publication number
EP2336543A3
EP2336543A3 EP10189366.7A EP10189366A EP2336543A3 EP 2336543 A3 EP2336543 A3 EP 2336543A3 EP 10189366 A EP10189366 A EP 10189366A EP 2336543 A3 EP2336543 A3 EP 2336543A3
Authority
EP
European Patent Office
Prior art keywords
pressure chamber
valve
combustion engines
fuel injector
injector valve
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.)
Withdrawn
Application number
EP10189366.7A
Other languages
German (de)
French (fr)
Other versions
EP2336543A2 (en
Inventor
Matthias Burger
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 EP2336543A2 publication Critical patent/EP2336543A2/en
Publication of EP2336543A3 publication Critical patent/EP2336543A3/en
Withdrawn legal-status Critical Current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
    • 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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0635—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding
    • F02M51/0642—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto
    • F02M51/0653—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto the valve being an elongated body, e.g. a needle valve
    • 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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
    • F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
    • F02M51/0675—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto the valve body having cylindrical guiding or metering portions, e.g. with fuel passages
    • F02M51/0678—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto the valve body having cylindrical guiding or metering portions, e.g. with fuel passages all portions having fuel passages, e.g. flats, grooves, diameter reductions
    • 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
    • F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
    • 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
    • F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
    • F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
    • 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
    • F02M2200/26—Fuel-injection apparatus with elastically deformable elements other than coil springs
    • 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
    • F02M2200/28—Details of throttles in fuel-injection apparatus

Landscapes

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

Abstract

Kraftstoffeinspritzventil für Brennkraftmaschinen mit einem Ventilkörper (1), in dem ein Druckraum (7) ausgebildet ist, in dem eine Ventilnadel (5) längsverschiebbar angeordnet ist, die mit einem Ventilsitz (17) zusammenwirkt. Durch das Zusammenwirken der Ventilnadel (5) mit dem Ventilsitz (17) wird ein Kraftstoffstrom zu wenigstens einer Einspritzöffnung (20) freigegeben oder unterbrochen, wobei im Druckraum (7) eine Spaltdrossel (19) der Breite (B) gebildet ist, durch die der Kraftstoffstrom zu den Einspritzöffnungen (20) fließt. Die Wand des Druckraums (7) verformt sich elastisch durch den im Druckraum (7) herrschenden Druck derart, dass die Breite (B) der Spaltdrossel (19) um 2 bis 8 µm pro 1000 bar Druck zunimmt.

Figure imgaf001
Fuel injection valve for internal combustion engines with a valve body (1) in which a pressure chamber (7) is formed, in which a valve needle (5) is arranged longitudinally displaceable, which cooperates with a valve seat (17). By the interaction of the valve needle (5) with the valve seat (17), a fuel flow to at least one injection port (20) is released or interrupted, wherein in the pressure chamber (7) a gap throttle (19) of the width (B) is formed by the Fuel flow to the injection ports (20) flows. The wall of the pressure chamber (7) deforms elastically by the pressure prevailing in the pressure chamber (7) such that the width (B) of the gap throttle (19) increases by 2 to 8 microns per 1000 bar pressure.
Figure imgaf001
EP10189366.7A 2009-12-21 2010-10-29 Fuel injector valve for combustion engines Withdrawn EP2336543A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009055036 2009-12-21
DE102010043110A DE102010043110A1 (en) 2009-12-21 2010-10-29 Fuel injection valve for internal combustion engines

Publications (2)

Publication Number Publication Date
EP2336543A2 EP2336543A2 (en) 2011-06-22
EP2336543A3 true EP2336543A3 (en) 2013-07-03

Family

ID=43759914

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10189366.7A Withdrawn EP2336543A3 (en) 2009-12-21 2010-10-29 Fuel injector valve for combustion engines

Country Status (2)

Country Link
EP (1) EP2336543A3 (en)
DE (1) DE102010043110A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201322485D0 (en) * 2013-12-19 2014-02-05 Delphi Tech Holding Sarl Fuel injection nozzle
DE102016000350A1 (en) * 2016-01-15 2017-03-02 L'orange Gmbh fuel injector

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003012282A1 (en) * 2001-07-27 2003-02-13 Robert Bosch Gmbh Fuel injection valve
DE10149961A1 (en) * 2001-10-10 2003-04-30 Bosch Gmbh Robert Fuel injection device for internal combustion engine, especially common rail injector, has flow path control sections interacting to give defined flow characteristic against time
DE102007032741A1 (en) * 2007-07-13 2009-01-15 Robert Bosch Gmbh Fuel injection valve for internal combustion engines
DE102009003145A1 (en) * 2009-05-15 2010-11-18 Robert Bosch Gmbh Fuel injector for internal combustion engine for injecting fuel under high pressure, comprises nozzle needle and control valve which controls nozzle needle for opening and closing injection opening

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19725198A1 (en) * 1997-06-14 1998-12-17 Bosch Gmbh Robert Fuel injector
DE10157419A1 (en) * 2001-11-23 2003-06-12 Bosch Gmbh Robert Leakage-reduced pressure supply for fuel injectors
DE10260724A1 (en) * 2002-12-23 2004-07-01 Robert Bosch Gmbh Fuel injection valve for internal combustion engines

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003012282A1 (en) * 2001-07-27 2003-02-13 Robert Bosch Gmbh Fuel injection valve
DE10149961A1 (en) * 2001-10-10 2003-04-30 Bosch Gmbh Robert Fuel injection device for internal combustion engine, especially common rail injector, has flow path control sections interacting to give defined flow characteristic against time
DE102007032741A1 (en) * 2007-07-13 2009-01-15 Robert Bosch Gmbh Fuel injection valve for internal combustion engines
DE102009003145A1 (en) * 2009-05-15 2010-11-18 Robert Bosch Gmbh Fuel injector for internal combustion engine for injecting fuel under high pressure, comprises nozzle needle and control valve which controls nozzle needle for opening and closing injection opening

Also Published As

Publication number Publication date
EP2336543A2 (en) 2011-06-22
DE102010043110A1 (en) 2011-06-22

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