EP1840366A3 - Kraftstoffinjektor - Google Patents

Kraftstoffinjektor Download PDF

Info

Publication number
EP1840366A3
EP1840366A3 EP07102118A EP07102118A EP1840366A3 EP 1840366 A3 EP1840366 A3 EP 1840366A3 EP 07102118 A EP07102118 A EP 07102118A EP 07102118 A EP07102118 A EP 07102118A EP 1840366 A3 EP1840366 A3 EP 1840366A3
Authority
EP
European Patent Office
Prior art keywords
pressure
fuel
chamber
high pressure
coupling chambers
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
EP07102118A
Other languages
English (en)
French (fr)
Other versions
EP1840366A2 (de
EP1840366B1 (de
Inventor
Patrick Mattes
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 EP1840366A2 publication Critical patent/EP1840366A2/de
Publication of EP1840366A3 publication Critical patent/EP1840366A3/de
Application granted granted Critical
Publication of EP1840366B1 publication Critical patent/EP1840366B1/de
Not-in-force 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
    • 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
    • F02M2200/705—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic with means for filling or emptying hydraulic chamber, e.g. for compensating clearance or thermal expansion
    • 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
    • F02M2200/708—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic with hydraulic chambers formed by a movable sleeve

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

Die Erfindung betrifft einen Kraftstoffinjektor mit einem Injektorgehäuse (1), das einen Kraftstoffhochdruckzulauf aufweist, der mit einer zentralen Kraftstoffhochdruckquelle außerhalb des Injektorgehäuses (1) und mit einem Druckraum (10) innerhalb des Injektorgehäuses (1) in Verbindung steht, aus dem mit Hochdruck beaufschlagter Kraftstoff in einen Brennraum einer Brennkraftmaschine eingespritzt wird, wenn eine Düsennadel (8) öffnet, die durch einen hydraulischen Koppler, der mindestens einen mit Hochdruck beaufschlagten Kopplungsraum (18,24,28) aufweist, mit einem Aktor (14) gekoppelt ist.
Um die Herstellkosten für den Kraftstoffinjektor zu reduzieren, steht der Kopplungsraum (18,24,28) mit einem Druckentlastungsraum in Verbindung.
EP07102118A 2006-03-28 2007-02-12 Kraftstoffinjektor Not-in-force EP1840366B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006014245A DE102006014245A1 (de) 2006-03-28 2006-03-28 Kraftstoffinjektor

Publications (3)

Publication Number Publication Date
EP1840366A2 EP1840366A2 (de) 2007-10-03
EP1840366A3 true EP1840366A3 (de) 2009-03-25
EP1840366B1 EP1840366B1 (de) 2010-12-15

Family

ID=38192622

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07102118A Not-in-force EP1840366B1 (de) 2006-03-28 2007-02-12 Kraftstoffinjektor

Country Status (4)

Country Link
EP (1) EP1840366B1 (de)
AT (1) ATE491881T1 (de)
DE (2) DE102006014245A1 (de)
ES (1) ES2355591T3 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012212614A1 (de) 2012-07-18 2014-01-23 Continental Automotive Gmbh Piezoinjektor mit hydraulisch gekoppelter Düsennadelbewegung
DE102012222509A1 (de) 2012-12-07 2014-06-12 Continental Automotive Gmbh Piezoinjektor
DE102012223934B4 (de) * 2012-12-20 2015-10-15 Continental Automotive Gmbh Piezoinjektor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10160191A1 (de) * 2001-12-07 2003-06-26 Bosch Gmbh Robert Kraftstoffinjektor mit fremdbetätigtem Steller und optimierter Systemdruckversorgung
US20060022554A1 (en) * 2004-07-31 2006-02-02 Michael Mennicken Method for operating a fuel injection device, especially for a motor vehicle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10160191A1 (de) * 2001-12-07 2003-06-26 Bosch Gmbh Robert Kraftstoffinjektor mit fremdbetätigtem Steller und optimierter Systemdruckversorgung
US20060022554A1 (en) * 2004-07-31 2006-02-02 Michael Mennicken Method for operating a fuel injection device, especially for a motor vehicle

Also Published As

Publication number Publication date
EP1840366A2 (de) 2007-10-03
DE102006014245A1 (de) 2007-10-04
ES2355591T3 (es) 2011-03-29
EP1840366B1 (de) 2010-12-15
ATE491881T1 (de) 2011-01-15
DE502007005923D1 (de) 2011-01-27

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