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DE10344942A1 - Kraftstoff-Einspritzvorrichtung für eine Brennkraftmaschine - Google Patents

Kraftstoff-Einspritzvorrichtung für eine Brennkraftmaschine Download PDF

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Publication number
DE10344942A1
DE10344942A1 DE10344942A DE10344942A DE10344942A1 DE 10344942 A1 DE10344942 A1 DE 10344942A1 DE 10344942 A DE10344942 A DE 10344942A DE 10344942 A DE10344942 A DE 10344942A DE 10344942 A1 DE10344942 A1 DE 10344942A1
Authority
DE
Germany
Prior art keywords
valve elements
controlled
pressure
closing direction
fuel injection
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
DE10344942A
Other languages
English (en)
Other versions
DE10344942B4 (de
Inventor
Kilian Bucher
Michael Kurrle
Oezguer Tuerker
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
Priority to DE10344942.6A priority Critical patent/DE10344942B4/de
Publication of DE10344942A1 publication Critical patent/DE10344942A1/de
Application granted granted Critical
Publication of DE10344942B4 publication Critical patent/DE10344942B4/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • F02M45/08—Injectors peculiar thereto
    • F02M45/086—Having more than one injection-valve controlling discharge orifices
    • 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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • F02M45/08—Injectors peculiar thereto
    • F02M45/083—Having two or more closing springs acting on injection-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
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/46—Valves, e.g. injectors, with concentric valve bodies

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

Eine Kraftstoff-Einspritzvorrichtung (18) für eine Brennkraftmaschine (10) umfasst mindestens zwei koaxiale Ventilelemente (32, 34), welche jeweils mindestens eine in Öffnungsrichtung wirkende Druckfläche (56, 57) aufweisen, die mindestens einen Druckraum (46, 66) begrenzt. Sie werden ferner von einer in Schließrichtung wirkenden Federeinrichtung (58, 84) beaufschlagt. Jedem Ventilelement (32, 34) ist mindestens eine Kraftstoff-Austrittsöffnung (36, 38) zugeordnet. Es wird vorgeschlagen, dass beide Ventilelemente zusätzlich über jeweils mindestens eine in Schließrichtung wirkende Steuerfläche (86, 88), die einen Steuerraum (90) begrenzt, hubsteuerbar sind, und dass die Federeinrichtungen (58, 84) und die Druckflächen (56, 67) so ausgebildet sind, dass die Ventilelemente (32, 34) auch drucksteuerbar sind.
DE10344942.6A 2003-09-27 2003-09-27 Kraftstoff-Einspritzvorrichtung für eine Brennkraftmaschine Expired - Fee Related DE10344942B4 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE10344942.6A DE10344942B4 (de) 2003-09-27 2003-09-27 Kraftstoff-Einspritzvorrichtung für eine Brennkraftmaschine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE10344942.6A DE10344942B4 (de) 2003-09-27 2003-09-27 Kraftstoff-Einspritzvorrichtung für eine Brennkraftmaschine

Publications (2)

Publication Number Publication Date
DE10344942A1 true DE10344942A1 (de) 2005-04-21
DE10344942B4 DE10344942B4 (de) 2017-12-21

Family

ID=34353127

Family Applications (1)

Application Number Title Priority Date Filing Date
DE10344942.6A Expired - Fee Related DE10344942B4 (de) 2003-09-27 2003-09-27 Kraftstoff-Einspritzvorrichtung für eine Brennkraftmaschine

Country Status (1)

Country Link
DE (1) DE10344942B4 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2424451A (en) * 2005-03-08 2006-09-27 Bosch Gmbh Robert Fuel injection valve with concentric inner and outer valve needles
FR2891024A1 (fr) * 2005-09-19 2007-03-23 Renault Sas Injecteur de carburant
GB2567171A (en) * 2017-10-04 2019-04-10 Delphi Tech Ip Ltd Fuel injector

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4115477C2 (de) * 1990-05-17 2003-02-06 Avl Verbrennungskraft Messtech Einspritzdüse für eine Brennkraftmaschine
AT3763U3 (de) * 1999-08-05 2000-12-27 Avl List Gmbh Nockenbetätigte einspritzeinrichtung für eine brennkraftmaschine
DE10058153A1 (de) * 2000-11-22 2002-06-06 Bosch Gmbh Robert Einspritzdüse mit separat steuerbaren Düsennadeln
DE10133434A1 (de) * 2001-07-10 2003-01-23 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
DE10141679A1 (de) * 2001-08-25 2003-03-06 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2424451A (en) * 2005-03-08 2006-09-27 Bosch Gmbh Robert Fuel injection valve with concentric inner and outer valve needles
GB2424451B (en) * 2005-03-08 2007-03-28 Bosch Gmbh Robert Fuel injection valve for internal combustion engines
FR2891024A1 (fr) * 2005-09-19 2007-03-23 Renault Sas Injecteur de carburant
GB2567171A (en) * 2017-10-04 2019-04-10 Delphi Tech Ip Ltd Fuel injector

Also Published As

Publication number Publication date
DE10344942B4 (de) 2017-12-21

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8110 Request for examination paragraph 44
R082 Change of representative
R016 Response to examination communication
R018 Grant decision by examination section/examining division
R020 Patent grant now final
R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee