ATE545778T1 - ACTUATOR WITH FLUID INSULATION - Google Patents

ACTUATOR WITH FLUID INSULATION

Info

Publication number
ATE545778T1
ATE545778T1 AT07115156T AT07115156T ATE545778T1 AT E545778 T1 ATE545778 T1 AT E545778T1 AT 07115156 T AT07115156 T AT 07115156T AT 07115156 T AT07115156 T AT 07115156T AT E545778 T1 ATE545778 T1 AT E545778T1
Authority
AT
Austria
Prior art keywords
actuator
needle
piezoelectric actuators
fuel
fluid insulation
Prior art date
Application number
AT07115156T
Other languages
German (de)
Inventor
Michael Kurz
Original Assignee
Bosch Gmbh Robert
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 Bosch Gmbh Robert filed Critical Bosch Gmbh Robert
Application granted granted Critical
Publication of ATE545778T1 publication Critical patent/ATE545778T1/en

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
    • F02M61/16—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
    • 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
    • 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
    • F02M2200/707—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic with means for avoiding fuel contact with actuators, e.g. isolating actuators by using bellows or diaphragms

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

The injector (10) has piezoelectric actuators (44, 46, 48) arranged in an actuator chamber with fuel pressure, where the piezoelectric actuators control a needle module (12). A needle-shaped injection valve unit in the nozzle module releases or closes an injection opening (86). The actuator chamber is filled with an insulating fluid i.e. diesel, and is separated from a fuel-guided high pressure chamber by an elastic membrane unit.
AT07115156T 2006-10-25 2007-08-29 ACTUATOR WITH FLUID INSULATION ATE545778T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006050165A DE102006050165A1 (en) 2006-10-25 2006-10-25 Actuator with fluid insulation

Publications (1)

Publication Number Publication Date
ATE545778T1 true ATE545778T1 (en) 2012-03-15

Family

ID=38980963

Family Applications (1)

Application Number Title Priority Date Filing Date
AT07115156T ATE545778T1 (en) 2006-10-25 2007-08-29 ACTUATOR WITH FLUID INSULATION

Country Status (3)

Country Link
EP (1) EP1916412B1 (en)
AT (1) ATE545778T1 (en)
DE (1) DE102006050165A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007053426A1 (en) * 2007-11-09 2009-05-14 Robert Bosch Gmbh Piezoelectric actuator module
DE102011084512A1 (en) 2011-10-14 2013-04-18 Robert Bosch Gmbh Hydraulic coupler

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10217594A1 (en) * 2002-04-19 2003-11-06 Bosch Gmbh Robert Fuel injection valve for IC engines has throttle gap formed by Laser/erosion drilling, and positioned separate from guide gaps, for cheaper fabrication of gaps
DE60304816T2 (en) * 2003-02-04 2006-11-02 Siemens Vdo Automotive S.P.A., Fauglia Dosing device with dynamic seal
JP4715097B2 (en) 2003-03-13 2011-07-06 株式会社デンソー Piezoelectric actuator, method for manufacturing the same, and injector
JP4554232B2 (en) * 2004-02-17 2010-09-29 株式会社デンソー Piezoelectric stack and method of manufacturing piezoelectric stack

Also Published As

Publication number Publication date
EP1916412B1 (en) 2012-02-15
DE102006050165A1 (en) 2008-04-30
EP1916412A2 (en) 2008-04-30
EP1916412A3 (en) 2009-11-04

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