EP2116717A3 - Fuel injector - Google Patents

Fuel injector Download PDF

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Publication number
EP2116717A3
EP2116717A3 EP09100169A EP09100169A EP2116717A3 EP 2116717 A3 EP2116717 A3 EP 2116717A3 EP 09100169 A EP09100169 A EP 09100169A EP 09100169 A EP09100169 A EP 09100169A EP 2116717 A3 EP2116717 A3 EP 2116717A3
Authority
EP
European Patent Office
Prior art keywords
control valve
fuel injector
closed position
adjustment axis
valve seat
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
EP09100169A
Other languages
German (de)
French (fr)
Other versions
EP2116717B1 (en
EP2116717A2 (en
Inventor
Nadja Eisenmenger
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 EP2116717A2 publication Critical patent/EP2116717A2/en
Publication of EP2116717A3 publication Critical patent/EP2116717A3/en
Application granted granted Critical
Publication of EP2116717B1 publication Critical patent/EP2116717B1/en
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
    • 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
    • F02M63/004—Sliding valves, e.g. spool valves, i.e. whereby the closing member has a sliding movement along a seat for opening and closing
    • F02M63/0042—Sliding valves, e.g. spool valves, i.e. whereby the closing member has a sliding movement along a seat for opening and closing combined with valve seats of the lift 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
    • 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
    • F02M63/0071—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059 characterised by guiding or centering means in valves including the absence of any guiding means, e.g. "flying arrangements"
    • 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
    • F02M63/0077—Valve seat 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
    • F02M63/007—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
    • 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

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 ein Kraftstoff-Injektor (1), insbesondere Common-Rail-Injektor, zum Einspritzen von Kraftstoff in einen Brennraum einer Brennkraftmaschine mit einem zwischen einer Schließstellung und einer Öffnungsstellung verstellbaren Einspritzventilelement (11), das mittels eines Steuerventils (32) schaltbar ist, wobei das Steuerventil (32) ein hülsenförmiges, entlang einer Verstellachse (30) verstellbares, Steuerventilelement (31) aufweist, das in seiner Schließstellung dichtend an einem Steuerventilsitzelement (15) anliegt. Erfindungsgemäß ist vorgesehen, dass das Steuerventilsitzelement (41) relativ zur Verstellachse (30) des Steuerventilelementes (31) bewegbar angeordnet ist.

Figure imgaf001
The invention relates to a fuel injector (1), in particular a common rail injector, for injecting fuel into a combustion chamber of an internal combustion engine having an injection valve element (11) which can be shifted by means of a control valve (32) between a closed position and an open position , wherein the control valve (32) has a sleeve-shaped, along an adjustment axis (30) adjustable, control valve member (31) which bears in its closed position sealingly against a control valve seat member (15). According to the invention, it is provided that the control valve seat element (41) is arranged to be movable relative to the adjustment axis (30) of the control valve element (31).
Figure imgaf001
EP09100169A 2008-05-06 2009-03-06 Fuel injector Expired - Fee Related EP2116717B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008001597A DE102008001597A1 (en) 2008-05-06 2008-05-06 Fuel injector

Publications (3)

Publication Number Publication Date
EP2116717A2 EP2116717A2 (en) 2009-11-11
EP2116717A3 true EP2116717A3 (en) 2009-12-02
EP2116717B1 EP2116717B1 (en) 2011-09-28

Family

ID=40841398

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09100169A Expired - Fee Related EP2116717B1 (en) 2008-05-06 2009-03-06 Fuel injector

Country Status (3)

Country Link
US (1) US7987835B2 (en)
EP (1) EP2116717B1 (en)
DE (1) DE102008001597A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010030429A1 (en) 2010-06-23 2011-12-29 Robert Bosch Gmbh Injector i.e. common-rail injector, for injecting fuel into combustion chamber of internal combustion engine, has seat surface whose sealing seat is formed at armature, and valve element formed in ball shape
DE102010039191A1 (en) 2010-08-11 2012-02-16 Robert Bosch Gmbh Fuel injector, particularly common-rail-injector, for injecting fuel in combustion chamber of internal combustion engine, has injection valve element that is adjustable between closing position and open position
DE102010043092A1 (en) * 2010-10-29 2012-05-03 Robert Bosch Gmbh Pressure control valve
DE102012208075A1 (en) * 2012-05-15 2013-11-21 Man Diesel & Turbo Se Injector for a fuel supply system of an internal combustion engine and fuel supply system
SE536494C2 (en) 2012-05-16 2013-12-27 Scania Cv Ab Valve for a fuel system for an internal combustion engine and a method for controlling a fuel system for an internal combustion engine
US9212639B2 (en) * 2012-11-02 2015-12-15 Caterpillar Inc. Debris robust fuel injector with co-axial control valve members and fuel system using same
CN106321307B (en) * 2015-07-03 2020-03-06 罗伯特·博世有限公司 Fuel injector and control valve therefor
DE102015223442A1 (en) 2015-11-26 2017-06-01 Robert Bosch Gmbh fuel injector
US11415094B2 (en) 2019-04-30 2022-08-16 Delphi Technologies Ip Limited Fuel pressure regulator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2341893A (en) * 1998-09-23 2000-03-29 Lucas Industries Ltd Two-stage electromagnetically actuated fuel injector for i.c. engines
DE102006050812A1 (en) * 2006-10-27 2008-04-30 Robert Bosch Gmbh Fuel injector for internal-combustion engine, has bushing closing annular groove outwards in its closed valve position, and opening connection of groove to low pressure side in its opened valve position, which is moved towards chamber
DE102006050042A1 (en) * 2006-10-24 2008-04-30 Robert Bosch Gmbh Injector, particularly common rail injector, for fuel injection in combustion chambers of internal-combustion engines, has actuator arranged in injector body, which is arranged to operate valve case of control valve

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4114851A (en) * 1976-05-10 1978-09-19 Sno-Trik Company High pressure valve
US4235416A (en) * 1978-11-08 1980-11-25 Westinghouse Electric Corp. Vibration resistant valve
US4501299A (en) * 1982-05-21 1985-02-26 Humphrey Products Company Plunger-type valve
US5279327A (en) * 1992-08-31 1994-01-18 Orbital Walbro Corporation Pressure regulator
US5324000A (en) * 1993-02-19 1994-06-28 Boc Health Care, Inc. Non-rotating needle valve
US6293254B1 (en) * 2000-01-07 2001-09-25 Cummins Engine Company, Inc. Fuel injector with floating sleeve control chamber
JP2004036420A (en) * 2002-07-01 2004-02-05 Yamaha Marine Co Ltd Failure diagnostic system for engine
EP1612403B1 (en) 2004-06-30 2007-01-10 C.R.F. Società Consortile per Azioni Servo valve for controlling an internal combustion engine fuel injector
US7650778B2 (en) * 2007-06-05 2010-01-26 Caterpillar Inc. Method and apparatus for testing a gear-driven fuel pump on a fuel injected IC engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2341893A (en) * 1998-09-23 2000-03-29 Lucas Industries Ltd Two-stage electromagnetically actuated fuel injector for i.c. engines
DE102006050042A1 (en) * 2006-10-24 2008-04-30 Robert Bosch Gmbh Injector, particularly common rail injector, for fuel injection in combustion chambers of internal-combustion engines, has actuator arranged in injector body, which is arranged to operate valve case of control valve
DE102006050812A1 (en) * 2006-10-27 2008-04-30 Robert Bosch Gmbh Fuel injector for internal-combustion engine, has bushing closing annular groove outwards in its closed valve position, and opening connection of groove to low pressure side in its opened valve position, which is moved towards chamber

Also Published As

Publication number Publication date
EP2116717B1 (en) 2011-09-28
EP2116717A2 (en) 2009-11-11
US20090277421A1 (en) 2009-11-12
US7987835B2 (en) 2011-08-02
DE102008001597A1 (en) 2009-11-12

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