DE10342771A1 - Fuel injector - Google Patents

Fuel injector Download PDF

Info

Publication number
DE10342771A1
DE10342771A1 DE2003142771 DE10342771A DE10342771A1 DE 10342771 A1 DE10342771 A1 DE 10342771A1 DE 2003142771 DE2003142771 DE 2003142771 DE 10342771 A DE10342771 A DE 10342771A DE 10342771 A1 DE10342771 A1 DE 10342771A1
Authority
DE
Germany
Prior art keywords
coupler
valve
actuator
fuel
sections
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Withdrawn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
DE2003142771
Other languages
German (de)
Inventor
Uwe Liskow
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 DE2003142771 priority Critical patent/DE10342771A1/en
Priority to FR0452050A priority patent/FR2860556A1/en
Publication of DE10342771A1 publication Critical patent/DE10342771A1/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Withdrawn legal-status Critical Current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
    • 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
    • F02M61/08—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 the valves opening in direction of fuel flow
    • 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
    • F02M61/167—Means for compensating clearance or thermal expansion

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

Ein Brennstoffeinspritzventil (1), insbesondere zum direkten Einspritzen von Brennstoff in einen Brennraum einer Brennkraftmaschine, mit einem piezoelektrischen, elektrostriktiven oder magnetostriktiven Aktor (2) und einem mit dem Aktor (2) in Wirkverbindung stehenden Ventilschließkörper (7), der mit einer Ventilsitzfläche (33) zu einem Dichtsitz zusammenwirkt, weist einen Koppler (4) mit einem ersten Koppler-Abschnitt (23) und einem zweiten Koppler-Abschnitt (24) auf. Die beiden Koppler-Abschnitte (23, 24) sind gegeneinander axial beweglich und stehen miteinander über ein in einem Volumen (36) befindlichen Hydraulikmedium in Wirkverbindung. Die beiden Koppler-Abschnitte (23, 24) werden durch magnetische Felder auseinander gedrückt.A fuel injection valve (1), in particular for the direct injection of fuel into a combustion chamber of an internal combustion engine, with a piezoelectric, electrostrictive or magnetostrictive actuator (2) and a valve closing body (7) operatively connected to the actuator (2), which is provided with a valve seat surface (7). 33) cooperates with a sealing seat, has a coupler (4) with a first coupler section (23) and a second coupler section (24). The two coupler sections (23, 24) are axially movable relative to one another and are in operative connection with one another via a hydraulic medium located in a volume (36). The two coupler sections (23, 24) are pressed apart by magnetic fields.

DE2003142771 2003-09-16 2003-09-16 Fuel injector Withdrawn DE10342771A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE2003142771 DE10342771A1 (en) 2003-09-16 2003-09-16 Fuel injector
FR0452050A FR2860556A1 (en) 2003-09-16 2004-09-15 Fuel injection valve for internal combustion engine, has coupler with two coupler segments cooperating with each other through hydraulic liquid and pushed back from each other by magnetic fields

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2003142771 DE10342771A1 (en) 2003-09-16 2003-09-16 Fuel injector

Publications (1)

Publication Number Publication Date
DE10342771A1 true DE10342771A1 (en) 2005-04-21

Family

ID=34305812

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2003142771 Withdrawn DE10342771A1 (en) 2003-09-16 2003-09-16 Fuel injector

Country Status (2)

Country Link
DE (1) DE10342771A1 (en)
FR (1) FR2860556A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1752654A1 (en) * 2005-08-08 2007-02-14 Robert Bosch Gmbh Fuel injector

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19940054A1 (en) * 1999-08-24 2001-03-22 Siemens Ag Dosing valve
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
DE10203659A1 (en) * 2002-01-30 2003-07-31 Bosch Gmbh Robert Fuel injector

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19940054A1 (en) * 1999-08-24 2001-03-22 Siemens Ag Dosing valve
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
DE10203659A1 (en) * 2002-01-30 2003-07-31 Bosch Gmbh Robert Fuel injector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1752654A1 (en) * 2005-08-08 2007-02-14 Robert Bosch Gmbh Fuel injector

Also Published As

Publication number Publication date
FR2860556A1 (en) 2005-04-08

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8139 Disposal/non-payment of the annual fee