EP1555427A3 - Fuel injector - Google Patents

Fuel injector Download PDF

Info

Publication number
EP1555427A3
EP1555427A3 EP05250097A EP05250097A EP1555427A3 EP 1555427 A3 EP1555427 A3 EP 1555427A3 EP 05250097 A EP05250097 A EP 05250097A EP 05250097 A EP05250097 A EP 05250097A EP 1555427 A3 EP1555427 A3 EP 1555427A3
Authority
EP
European Patent Office
Prior art keywords
valve needle
actuator
control
injector
fuel pressure
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
EP05250097A
Other languages
German (de)
French (fr)
Other versions
EP1555427B1 (en
EP1555427A2 (en
Inventor
Michael P. Cooke
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.)
Delphi Technologies Inc
Original Assignee
Delphi Technologies Inc
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 Delphi Technologies Inc filed Critical Delphi Technologies Inc
Priority to EP20050250097 priority Critical patent/EP1555427B1/en
Publication of EP1555427A2 publication Critical patent/EP1555427A2/en
Publication of EP1555427A3 publication Critical patent/EP1555427A3/en
Application granted granted Critical
Publication of EP1555427B1 publication Critical patent/EP1555427B1/en
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
    • 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
    • F02M61/042—The valves being provided with fuel passages
    • 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
    • F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
    • F02M2200/304—Fuel-injection apparatus having mechanical parts, the movement of which is damped using hydraulic 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
    • F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
    • F02M2200/306—Fuel-injection apparatus having mechanical parts, the movement of which is damped using mechanical 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

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

A fuel injector for use in an internal combustion engine includes a valve needle (10) which is engageable with a valve needle seat (16) to control fuel injection through an injector outlet (21). An actuator (20), typically in the form of a piezoelectric actuator stack (22), is arranged to control fuel pressure within a control chamber (50) and a surface associated with the valve needle (10) is exposed to fuel pressure within the control chamber. A load transmission means (36), preferably in the form of a motion inverter, transmits movement of the actuator (20, 22) to the valve needle (10). The load transmission means includes a bellows arrangement (42) which is compressible and expandable in response to said actuator movement so as to vary fuel pressure within the control chamber (50), thereby to control movement of the valve needle (10) relative to the valve needle seat (16). A piezoelectrically operable injector is operable in an energise-to-inject mode to provide efficient opening of the valve needle (10) and to enable rapid closure of the valve needle (10).
EP20050250097 2004-01-13 2005-01-11 Fuel injector Not-in-force EP1555427B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20050250097 EP1555427B1 (en) 2004-01-13 2005-01-11 Fuel injector

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP04250133 2004-01-13
EP04250133 2004-01-13
EP20050250097 EP1555427B1 (en) 2004-01-13 2005-01-11 Fuel injector

Publications (3)

Publication Number Publication Date
EP1555427A2 EP1555427A2 (en) 2005-07-20
EP1555427A3 true EP1555427A3 (en) 2005-08-17
EP1555427B1 EP1555427B1 (en) 2007-10-10

Family

ID=34621574

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20050250097 Not-in-force EP1555427B1 (en) 2004-01-13 2005-01-11 Fuel injector

Country Status (1)

Country Link
EP (1) EP1555427B1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004037124A1 (en) * 2004-07-30 2006-03-23 Robert Bosch Gmbh Common rail injector
DE102005035671B4 (en) * 2005-07-29 2009-06-18 Continental Automotive Gmbh Fuel injector for an internal combustion engine
DE102005036444A1 (en) * 2005-08-03 2007-02-08 Robert Bosch Gmbh injection
DE102006012078A1 (en) * 2005-11-15 2007-05-16 Bosch Gmbh Robert Fuel injection device for an internal combustion engine with direct fuel injection
WO2008017614A1 (en) * 2006-08-09 2008-02-14 Siemens Aktiengesellschaft Fuel injection device for an internal combustion engine
EP2083158A1 (en) 2008-01-22 2009-07-29 Delphi Technologies, Inc. Piezoelectrically actuated fuel injector and operating method thereof
CN105834054B (en) * 2016-05-13 2018-02-27 江苏大学 A kind of piezoelectricity two-phase flow ultrasonic atomizatio shower nozzle

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3605703A (en) * 1970-05-22 1971-09-20 Gen Motors Corp Fuel injection
US4803393A (en) * 1986-07-31 1989-02-07 Toyota Jidosha Kabushiki Kaisha Piezoelectric actuator
EP0781916A1 (en) * 1995-12-26 1997-07-02 General Motors Corporation Fuel injector deep drawn valve guide
EP0781917A1 (en) * 1995-12-26 1997-07-02 General Motors Corporation Fuel injector valve seat retention
EP1111230A2 (en) * 1999-12-22 2001-06-27 Siemens Aktiengesellschaft Hydraulic device for transmitting an actuator movement
US6311950B1 (en) * 1999-04-20 2001-11-06 Siemens Aktiengesellschaft Fluid metering device
US6369682B1 (en) * 2000-09-27 2002-04-09 Delphi Technologies, Inc. Multifunctional coil assembly for an injector
DE10162045A1 (en) * 2001-12-17 2003-06-26 Siemens Ag Actuator deflection transmission device has tensioning device in form of clamping spring between casing and second piston
US20040061005A1 (en) * 2002-09-18 2004-04-01 Denso Corporation Fuel injection device for internal combustion engine
WO2004106724A1 (en) * 2003-05-27 2004-12-09 Scania Cv Ab (Publ) Fuel injector
EP1491757A1 (en) * 2003-06-24 2004-12-29 Robert Bosch Gmbh Fuel injection system for internal combustion engine

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3605703A (en) * 1970-05-22 1971-09-20 Gen Motors Corp Fuel injection
US4803393A (en) * 1986-07-31 1989-02-07 Toyota Jidosha Kabushiki Kaisha Piezoelectric actuator
EP0781916A1 (en) * 1995-12-26 1997-07-02 General Motors Corporation Fuel injector deep drawn valve guide
EP0781917A1 (en) * 1995-12-26 1997-07-02 General Motors Corporation Fuel injector valve seat retention
US6311950B1 (en) * 1999-04-20 2001-11-06 Siemens Aktiengesellschaft Fluid metering device
EP1111230A2 (en) * 1999-12-22 2001-06-27 Siemens Aktiengesellschaft Hydraulic device for transmitting an actuator movement
US6369682B1 (en) * 2000-09-27 2002-04-09 Delphi Technologies, Inc. Multifunctional coil assembly for an injector
DE10162045A1 (en) * 2001-12-17 2003-06-26 Siemens Ag Actuator deflection transmission device has tensioning device in form of clamping spring between casing and second piston
US20040061005A1 (en) * 2002-09-18 2004-04-01 Denso Corporation Fuel injection device for internal combustion engine
WO2004106724A1 (en) * 2003-05-27 2004-12-09 Scania Cv Ab (Publ) Fuel injector
EP1491757A1 (en) * 2003-06-24 2004-12-29 Robert Bosch Gmbh Fuel injection system for internal combustion engine

Also Published As

Publication number Publication date
EP1555427B1 (en) 2007-10-10
EP1555427A2 (en) 2005-07-20

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