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DE60329881D1 - Fuel injector - Google Patents

Fuel injector

Info

Publication number
DE60329881D1
DE60329881D1 DE60329881T DE60329881T DE60329881D1 DE 60329881 D1 DE60329881 D1 DE 60329881D1 DE 60329881 T DE60329881 T DE 60329881T DE 60329881 T DE60329881 T DE 60329881T DE 60329881 D1 DE60329881 D1 DE 60329881D1
Authority
DE
Germany
Prior art keywords
needle
fuel injector
actuator
moving
end closed
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.)
Expired - Lifetime
Application number
DE60329881T
Other languages
German (de)
Inventor
Franck Guillemard
Philippe Ginat
Nicolas Venuti
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.)
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
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 Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Application granted granted Critical
Publication of DE60329881D1 publication Critical patent/DE60329881D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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

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 (2) comprises a body (4) with an orifice (10) at the end to deliver fuel, a moving needle (12), a piezoelectric actuator (26) and a return spring (18). Movement amplification between the actuator and the needle is provided by a hydraulic chamber (32) with one end closed by the moving surface (28) of the actuator and the other end closed by a surface (24') attached to the needle.
DE60329881T 2002-02-22 2003-02-18 Fuel injector Expired - Lifetime DE60329881D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0202310A FR2836518B1 (en) 2002-02-22 2002-02-22 FUEL INJECTOR

Publications (1)

Publication Number Publication Date
DE60329881D1 true DE60329881D1 (en) 2009-12-17

Family

ID=27676026

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60329881T Expired - Lifetime DE60329881D1 (en) 2002-02-22 2003-02-18 Fuel injector

Country Status (4)

Country Link
EP (1) EP1342913B1 (en)
AT (1) ATE447668T1 (en)
DE (1) DE60329881D1 (en)
FR (1) FR2836518B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3234341B1 (en) 2014-12-19 2019-02-06 Wärtsilä Finland Oy A fuel injector for an internal combustion piston engine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4784102A (en) * 1984-12-25 1988-11-15 Nippon Soken, Inc. Fuel injector and fuel injection system
DE3936619A1 (en) * 1989-11-03 1991-05-08 Man Nutzfahrzeuge Ag METHOD FOR INJECTING A FUEL INTO THE COMBUSTION CHAMBER OF AN AIR COMPRESSING, SELF-IGNITION ENGINE, AND APPARATUS FOR CARRYING OUT THIS METHOD
US5875764A (en) * 1998-05-13 1999-03-02 Siemens Aktiengesellschaft Apparatus and method for valve control
DE19839125C1 (en) * 1998-08-27 2000-04-20 Siemens Ag Device and method for dosing fluid
US6079641A (en) 1998-10-13 2000-06-27 Caterpillar Inc. Fuel injector with rate shaping control through piezoelectric nozzle lift
DE19946827C1 (en) * 1999-09-30 2001-06-21 Bosch Gmbh Robert Valve for controlling liquids

Also Published As

Publication number Publication date
EP1342913B1 (en) 2009-11-04
EP1342913A1 (en) 2003-09-10
FR2836518B1 (en) 2005-12-02
FR2836518A1 (en) 2003-08-29
ATE447668T1 (en) 2009-11-15

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Legal Events

Date Code Title Description
8320 Willingness to grant licences declared (paragraph 23)
8364 No opposition during term of opposition