EP1531258A3 - Fuel injector - Google Patents

Fuel injector Download PDF

Info

Publication number
EP1531258A3
EP1531258A3 EP04105673A EP04105673A EP1531258A3 EP 1531258 A3 EP1531258 A3 EP 1531258A3 EP 04105673 A EP04105673 A EP 04105673A EP 04105673 A EP04105673 A EP 04105673A EP 1531258 A3 EP1531258 A3 EP 1531258A3
Authority
EP
European Patent Office
Prior art keywords
drive piston
fuel injector
deflection
face
nozzle 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.)
Withdrawn
Application number
EP04105673A
Other languages
German (de)
French (fr)
Other versions
EP1531258A2 (en
Inventor
Jürgen Dick
Hellmut Freudenberg
Heinz Lixl
Willibald SCHÜRZ
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP1531258A2 publication Critical patent/EP1531258A2/en
Publication of EP1531258A3 publication Critical patent/EP1531258A3/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Withdrawn legal-status Critical Current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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/0603—Injectors peculiar thereto with means directly operating the valve needle using piezoelectric or magnetostrictive operating means
    • 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
    • F02M2200/704—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic with actuator and actuated element moving in different directions, e.g. in opposite directions
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

Es ist ein Kraftstoffeinspritzventil (1) mit einem Steuerraum (5) vorgesehen, der von einem axial verschiebbaren Antriebskolben (6), der in Wirkverbindung mit dem Aktor (3) steht, und einem zumindest eine Stirnfläche (8) aufweisenden Steuerkolben (7) begrenzt ist, der als Teil der Düsennadel (2) ausgebildet ist und vom Antriebskolben (6) umfasst ist, wobei die Stirnfläche (8) den Steuerraum (5) an einer Seite wenigstens teilweise begrenzt, wodurch eine Auslenkung des Antriebskolbens (6) in eine Richtung eine Auslenkung der Düsennadel (2) in die entgegengesetzte Richtung bewirkt.

Figure imgaf001
A fuel injection valve (1) with a control chamber (5) is provided which is delimited by an axially displaceable drive piston (6), which is in operative connection with the actuator (3), and a control piston (7) having at least one end face (8) is, which is formed as part of the nozzle needle (2) and the drive piston (6) is included, wherein the end face (8) the control chamber (5) on one side at least partially limited, whereby a deflection of the drive piston (6) in one direction causes a deflection of the nozzle needle (2) in the opposite direction.
Figure imgaf001
EP04105673A 2003-11-13 2004-11-10 Fuel injector Withdrawn EP1531258A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10353045 2003-11-13
DE2003153045 DE10353045A1 (en) 2003-11-13 2003-11-13 Fuel injection valve

Publications (2)

Publication Number Publication Date
EP1531258A2 EP1531258A2 (en) 2005-05-18
EP1531258A3 true EP1531258A3 (en) 2006-12-27

Family

ID=34428716

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04105673A Withdrawn EP1531258A3 (en) 2003-11-13 2004-11-10 Fuel injector

Country Status (2)

Country Link
EP (1) EP1531258A3 (en)
DE (1) DE10353045A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004031308B4 (en) * 2004-06-29 2013-05-23 Robert Bosch Gmbh Hydraulic coupler
DE102005035671B4 (en) * 2005-07-29 2009-06-18 Continental Automotive Gmbh Fuel injector for an internal combustion engine
DE102005041994B4 (en) * 2005-09-05 2017-12-14 Robert Bosch Gmbh Fuel injector with directly operable injection valve member and two-stage transmission
DE102005041996B4 (en) * 2005-09-05 2017-07-27 Robert Bosch Gmbh Fuel injector with directly operable injection valve member and method for controlling the injection valve member
DE102005054361A1 (en) * 2005-11-15 2007-05-24 Fev Motorentechnik Gmbh high-pressure fuel
DE102006036779A1 (en) * 2006-08-07 2008-02-14 Robert Bosch Gmbh Fuel injector with direct needle control and servo valve support
DE102006036780A1 (en) 2006-08-07 2008-02-21 Robert Bosch Gmbh Fuel injector with direct needle control and servo valve support
JP4270294B2 (en) * 2007-03-05 2009-05-27 株式会社デンソー Fuel injection valve
JP4270293B2 (en) 2007-03-05 2009-05-27 株式会社デンソー Fuel injection valve
DE102009024595A1 (en) 2009-06-10 2011-03-24 Continental Automotive Gmbh Injection valve with transmission unit
DE102009024596A1 (en) 2009-06-10 2011-04-07 Continental Automotive Gmbh Injection valve with transmission unit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19519191A1 (en) * 1995-05-24 1996-12-19 Siemens Ag Injector
US5697554A (en) * 1995-01-12 1997-12-16 Robert Bosch Gmbh Metering valve for metering a fluid
DE19950760A1 (en) * 1999-10-21 2001-04-26 Bosch Gmbh Robert Fuel injection valve esp. for fuel injection systems of IC engines with piezo-electric or magneto-strictive actuator and valve closing body operable by valve needle working with valve

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5697554A (en) * 1995-01-12 1997-12-16 Robert Bosch Gmbh Metering valve for metering a fluid
DE19519191A1 (en) * 1995-05-24 1996-12-19 Siemens Ag Injector
DE19950760A1 (en) * 1999-10-21 2001-04-26 Bosch Gmbh Robert Fuel injection valve esp. for fuel injection systems of IC engines with piezo-electric or magneto-strictive actuator and valve closing body operable by valve needle working with valve

Also Published As

Publication number Publication date
DE10353045A1 (en) 2005-06-23
EP1531258A2 (en) 2005-05-18

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