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EP1312796A3 - Fuel injection valve - Google Patents

Fuel injection valve Download PDF

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Publication number
EP1312796A3
EP1312796A3 EP02024775A EP02024775A EP1312796A3 EP 1312796 A3 EP1312796 A3 EP 1312796A3 EP 02024775 A EP02024775 A EP 02024775A EP 02024775 A EP02024775 A EP 02024775A EP 1312796 A3 EP1312796 A3 EP 1312796A3
Authority
EP
European Patent Office
Prior art keywords
fuel injection
valve
injection
injection valve
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
EP02024775A
Other languages
German (de)
French (fr)
Other versions
EP1312796B1 (en
EP1312796A2 (en
Inventor
Gerhard Suchomel
Josef Pickel
Fridolin Zeck
Juergen Schubert
Friedrich Weis
Mattias Klinger
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7705780&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1312796(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1312796A2 publication Critical patent/EP1312796A2/en
Publication of EP1312796A3 publication Critical patent/EP1312796A3/en
Application granted granted Critical
Publication of EP1312796B1 publication Critical patent/EP1312796B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
    • 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
    • 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
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • 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
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
    • F02M61/1833—Discharge orifices having changing cross sections, e.g. being divergent
    • 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
    • F02M2200/50—Arrangements of springs for valves used in fuel injectors or fuel injection pumps
    • F02M2200/505—Adjusting spring tension by sliding spring seats
    • 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
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8069—Fuel injection apparatus manufacture, repair or assembly involving removal of material from the fuel apparatus, e.g. by punching, hydro-erosion or mechanical operation
    • 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
    • F02M61/165—Filtering elements specially adapted in fuel inlets to injector

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)
  • Manufacturing & Machinery (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

Ein Brennstoffeinspritzventil (1) für Brennstoffeinspritzanlagen von Brennkraftmaschinen umfaßt einen Ventilschließkörper (4), der zusammen mit einer an einem Ventilsitzkörper (5) ausgebildeten Ventilsitzfläche (6) einen Dichtsitz bildet, und zumindest eine Abspritzöffnung (7), die in dem Ventilsitzkörper (5) in Strömungsrichtung nach dem Dichtsitz ausgebildet ist. Die Abspritzöffnung (7) ist in Strömungsrichtung verjüngt geformt, wobei ein Einlaufbereich (39) der Abspritzöffnung (7) abgerundet ist und einen größeren Öffnungswinkel aufweist als ein Auslaufbereich (42).

Figure imgaf001
Figure imgaf002
A fuel injection valve (1) for fuel injection systems of internal combustion engines comprises a valve closing body (4) which forms a sealing seat together with a valve seat body (5) formed on a valve seat body (5), and at least one injection opening (7) in the valve seat body (5). is formed in the flow direction after the sealing seat. The injection orifice (7) is shaped to be tapered in the direction of flow, wherein an inlet region (39) of the injection orifice (7) is rounded off and has a larger opening angle than a discharge region (42).
Figure imgaf001
Figure imgaf002
EP20020024775 2001-11-15 2002-11-07 Fuel injection valve Expired - Lifetime EP1312796B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001156020 DE10156020A1 (en) 2001-11-15 2001-11-15 Fuel injector
DE10156020 2001-11-15

Publications (3)

Publication Number Publication Date
EP1312796A2 EP1312796A2 (en) 2003-05-21
EP1312796A3 true EP1312796A3 (en) 2006-02-01
EP1312796B1 EP1312796B1 (en) 2008-02-13

Family

ID=7705780

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020024775 Expired - Lifetime EP1312796B1 (en) 2001-11-15 2002-11-07 Fuel injection valve

Country Status (3)

Country Link
EP (1) EP1312796B1 (en)
JP (1) JP2003184706A (en)
DE (2) DE10156020A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2876750B1 (en) * 2004-10-19 2010-09-17 Renault Sas INJECTION NOZZLE HAVING DIFFERENT HOLES OF CONICITY AND ENGINE COMPRISING SUCH A NOZZLE
JP4079144B2 (en) 2004-12-20 2008-04-23 株式会社豊田中央研究所 Fuel injection valve
EP1887074B1 (en) * 2006-08-04 2011-09-14 Infineum International Limited Method and use for the prevention of fuel injector deposits
EP1900795A1 (en) * 2006-09-07 2008-03-19 Infineum International Limited Method and use for the prevention of fuel injector deposits
US20080060608A1 (en) * 2006-09-07 2008-03-13 Angela Priscilla Breakspear Method and use for the prevention of fuel injector deposits
AT512423A1 (en) * 2012-02-07 2013-08-15 Bosch Gmbh Robert INJECTION NOZZLE FOR INJECTING MEDIA TO THE COMBUSTION ENGINE OF AN INTERNAL COMBUSTION ENGINE
JP6036354B2 (en) 2013-02-04 2016-11-30 日立オートモティブシステムズ株式会社 Fuel injection valve
DE102016208080A1 (en) * 2016-05-11 2017-11-16 Volkswagen Ag Fuel injection valve and method for producing a fuel injection valve
DE102018113660A1 (en) * 2018-06-08 2019-12-12 Liebherr-Components Deggendorf Gmbh Nozzle for injecting fuel

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0352926A1 (en) * 1988-07-26 1990-01-31 LUCAS INDUSTRIES public limited company Fuel injectors for internal combustion engines
EP0370659A1 (en) * 1988-11-19 1990-05-30 Lucas Industries Public Limited Company Fuel injection nozzle
EP0446165A1 (en) * 1990-03-06 1991-09-11 Ail Corporation Method and apparatus for electrochemical machining of spray holes in fuel injection nozzles
WO1997005989A1 (en) * 1995-08-04 1997-02-20 Dynetics Corporation Method and apparatus for shaping an orifice with an abrasive slurry
US5992766A (en) * 1997-07-11 1999-11-30 Robert Bosch Gmbh Fuel injection valve
DE19914719A1 (en) * 1999-03-31 2000-10-05 Siemens Ag Hydro-erosive bore edge rounding method
DE10214096A1 (en) * 2001-03-29 2002-10-31 Denso Corp Fuel injection device for fuel injection system of internal combustion engine has number of injection orifices circumferentially spaced around conical valve seat and downstream of where contact section of needle sits upon valve seat

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19804463B4 (en) 1998-02-05 2006-06-14 Daimlerchrysler Ag Fuel injection system for gasoline engines

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0352926A1 (en) * 1988-07-26 1990-01-31 LUCAS INDUSTRIES public limited company Fuel injectors for internal combustion engines
EP0370659A1 (en) * 1988-11-19 1990-05-30 Lucas Industries Public Limited Company Fuel injection nozzle
EP0446165A1 (en) * 1990-03-06 1991-09-11 Ail Corporation Method and apparatus for electrochemical machining of spray holes in fuel injection nozzles
WO1997005989A1 (en) * 1995-08-04 1997-02-20 Dynetics Corporation Method and apparatus for shaping an orifice with an abrasive slurry
US5992766A (en) * 1997-07-11 1999-11-30 Robert Bosch Gmbh Fuel injection valve
DE19914719A1 (en) * 1999-03-31 2000-10-05 Siemens Ag Hydro-erosive bore edge rounding method
DE10214096A1 (en) * 2001-03-29 2002-10-31 Denso Corp Fuel injection device for fuel injection system of internal combustion engine has number of injection orifices circumferentially spaced around conical valve seat and downstream of where contact section of needle sits upon valve seat

Also Published As

Publication number Publication date
JP2003184706A (en) 2003-07-03
EP1312796B1 (en) 2008-02-13
DE10156020A1 (en) 2003-07-17
EP1312796A2 (en) 2003-05-21
DE50211662D1 (en) 2008-03-27

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