EP1347169A3 - Fuel injection valve - Google Patents

Fuel injection valve Download PDF

Info

Publication number
EP1347169A3
EP1347169A3 EP03005939A EP03005939A EP1347169A3 EP 1347169 A3 EP1347169 A3 EP 1347169A3 EP 03005939 A EP03005939 A EP 03005939A EP 03005939 A EP03005939 A EP 03005939A EP 1347169 A3 EP1347169 A3 EP 1347169A3
Authority
EP
European Patent Office
Prior art keywords
control valve
operation force
control
valve
fuel injection
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
EP03005939A
Other languages
German (de)
French (fr)
Other versions
EP1347169A2 (en
EP1347169B9 (en
EP1347169B1 (en
Inventor
Yoshimasa Watanabe
Kazuhiro Omae
Niro Takaki
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.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
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 Toyota Motor Corp filed Critical Toyota Motor Corp
Publication of EP1347169A2 publication Critical patent/EP1347169A2/en
Publication of EP1347169A3 publication Critical patent/EP1347169A3/en
Application granted granted Critical
Publication of EP1347169B1 publication Critical patent/EP1347169B1/en
Publication of EP1347169B9 publication Critical patent/EP1347169B9/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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators
    • 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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • F02M45/08—Injectors peculiar thereto
    • 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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/025—Hydraulically actuated valves draining the chamber to release the closing pressure
    • 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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

A fuel injection valve (1) provided with a control valve (8) which is displaced in order to control a pressure within a pressure chamber (5) acting upon a jet hole valve (4), an actuator (17) which generates an operation force for displacing the control valve (8), and elastic support means (22) which elastically supports the control valve in resistance to the operation force. The actuator (17) can change the operation force by controlling a control amount, and the elastic support means (22) is displaced along with the control valve (8) in accordance with increase of the operation force. When the control valve (8) is displaced to a chosen intermediate position it abuts with an abutting member (23). This abutting member (23) is pushed by a set pushing force, generated by a elastic member (24) which is separate from the elastic support means (23), which acts in the opposite direction to the operation force prior to the displacement of the abutting member (23). By structuring the fuel injection valve (1) in this way, it is possible to accurately control the control valve (8) such that it has the chosen intermediate displacement.
EP20030005939 2002-03-18 2003-03-17 Fuel injection valve Expired - Lifetime EP1347169B9 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002074149A JP3891866B2 (en) 2002-03-18 2002-03-18 Fuel injection valve
JP2002074149 2002-03-18

Publications (4)

Publication Number Publication Date
EP1347169A2 EP1347169A2 (en) 2003-09-24
EP1347169A3 true EP1347169A3 (en) 2004-05-06
EP1347169B1 EP1347169B1 (en) 2006-06-07
EP1347169B9 EP1347169B9 (en) 2006-09-13

Family

ID=27785149

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030005939 Expired - Lifetime EP1347169B9 (en) 2002-03-18 2003-03-17 Fuel injection valve

Country Status (4)

Country Link
EP (1) EP1347169B9 (en)
JP (1) JP3891866B2 (en)
DE (1) DE60305766T2 (en)
ES (1) ES2264501T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4214962B2 (en) * 2004-07-08 2009-01-28 株式会社デンソー Driving force transmission device and injector
CN114439662B (en) * 2022-02-22 2023-04-18 一汽解放汽车有限公司 Switching valve and common rail system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0816670A1 (en) * 1996-07-02 1998-01-07 Siemens Automotive Corporation Piezoelectric controlled common rail injector with hydraulic amplification of piezoelectric stroke
EP1041272A2 (en) * 1999-04-01 2000-10-04 Delphi Technologies, Inc. Fuel injector
DE10225209A1 (en) * 2001-06-07 2003-01-09 Denso Corp Fuel injector for diesel engine, has movable element that abuts with control valve when control valve is lifted by drive such that control chambers are in contact with each other

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0816670A1 (en) * 1996-07-02 1998-01-07 Siemens Automotive Corporation Piezoelectric controlled common rail injector with hydraulic amplification of piezoelectric stroke
EP1041272A2 (en) * 1999-04-01 2000-10-04 Delphi Technologies, Inc. Fuel injector
DE10225209A1 (en) * 2001-06-07 2003-01-09 Denso Corp Fuel injector for diesel engine, has movable element that abuts with control valve when control valve is lifted by drive such that control chambers are in contact with each other

Also Published As

Publication number Publication date
JP3891866B2 (en) 2007-03-14
JP2003269291A (en) 2003-09-25
ES2264501T3 (en) 2007-01-01
EP1347169A2 (en) 2003-09-24
EP1347169B9 (en) 2006-09-13
DE60305766D1 (en) 2006-07-20
EP1347169B1 (en) 2006-06-07
DE60305766T2 (en) 2007-06-14

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