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EP0921302A3 - Fuel injector - Google Patents

Fuel injector Download PDF

Info

Publication number
EP0921302A3
EP0921302A3 EP98309515A EP98309515A EP0921302A3 EP 0921302 A3 EP0921302 A3 EP 0921302A3 EP 98309515 A EP98309515 A EP 98309515A EP 98309515 A EP98309515 A EP 98309515A EP 0921302 A3 EP0921302 A3 EP 0921302A3
Authority
EP
European Patent Office
Prior art keywords
fuel
control chamber
control
valve needle
seating
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.)
Withdrawn
Application number
EP98309515A
Other languages
German (de)
French (fr)
Other versions
EP0921302A2 (en
Inventor
Michael Peter 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
Lucas Industries Ltd
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 Lucas Industries Ltd filed Critical Lucas Industries Ltd
Publication of EP0921302A2 publication Critical patent/EP0921302A2/en
Publication of EP0921302A3 publication Critical patent/EP0921302A3/en
Withdrawn legal-status Critical Current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
    • 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)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

A fuel injector comprises a valve needle (14) engageable with a seating to control fuel flow from a delivery passage (18) to an outlet opening (20), a control chamber (24) communicating with the delivery passage (18), the control chamber (24) being defined, in part, by a surface associated with the valve needle (14) orientated such that the application of fuel under pressure to the control chamber (24) applies a force to the valve needle (14) urging the valve needle (14) towards its seating, a control valve (62) controlling the fuel pressure within the control chamber (24), and a delivery valve (40, 46) responsive to the fuel pressure within the control chamber (24) to control the flow of fuel along the delivery passage (18) towards the seating.
EP98309515A 1997-12-06 1998-11-20 Fuel injector Withdrawn EP0921302A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9725802 1997-12-06
GBGB9725802.4A GB9725802D0 (en) 1997-12-06 1997-12-06 Fuel injection

Publications (2)

Publication Number Publication Date
EP0921302A2 EP0921302A2 (en) 1999-06-09
EP0921302A3 true EP0921302A3 (en) 2000-09-06

Family

ID=10823189

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98309515A Withdrawn EP0921302A3 (en) 1997-12-06 1998-11-20 Fuel injector

Country Status (3)

Country Link
EP (1) EP0921302A3 (en)
JP (1) JPH11229993A (en)
GB (1) GB9725802D0 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19949527A1 (en) * 1999-10-14 2001-04-19 Bosch Gmbh Robert Injector for a fuel injection system for internal combustion engines with a nozzle needle protruding into the valve control chamber
DE60142818D1 (en) 2000-05-31 2010-09-30 Denso Corp Piezoelectric component for an injection device
JP2002054526A (en) 2000-05-31 2002-02-20 Denso Corp Piezoelectric element for injector
JP4158338B2 (en) 2000-06-06 2008-10-01 株式会社デンソー Piezoelectric element for injector
DE10038996A1 (en) * 2000-08-10 2002-02-21 Bosch Gmbh Robert Fuel injection valve
DE10120804A1 (en) * 2001-04-27 2002-11-07 Bosch Gmbh Robert Sequential fuel injector
ITBO20020497A1 (en) 2002-07-30 2004-01-30 Magneti Marelli Powertrain Spa FUEL INJECTOR FOR AN INTERNAL COMBUSTION ENGINE WITH HYDRAULIC PIN ACTUATION
ITBO20040466A1 (en) 2004-07-23 2004-10-23 Magneti Marelli Holding Spa FUEL INJECTOR WITH ELECTROMAGNETIC ACTUATION
ITBO20040649A1 (en) 2004-10-20 2005-01-20 Magneti Marelli Powertrain Spa FUEL INJECTOR WITH ELECTROMAGNETIC IMPLEMENTATION OF THE PIN
DE102005014516A1 (en) * 2004-12-15 2006-06-29 Siemens Ag Diesel fuel injector for use in common rail injection system, has nozzle needle adjoining to control chamber, which is connected with fuel high pressure pipe by bypass throttle, where pressure in chamber controls position of nozzle needle
ATE488690T1 (en) * 2005-07-18 2010-12-15 Ganser Hydromag STORAGE INJECTION SYSTEM FOR INTERNAL COMBUSTION ENGINE
ATE551521T1 (en) 2008-04-18 2012-04-15 Magneti Marelli Spa FUEL INJECTION NOZZLE WITH DIRECT CLOSURE OPERATION FOR COMBUSTION ENGINES

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2759255A1 (en) * 1977-12-31 1979-07-12 Bosch Gmbh Robert Compact fuel injection valve for IC engine - has hydraulic relay ball valve between fuel feed and return to control fuel leak off
US5263645A (en) * 1991-11-01 1993-11-23 Paul Marius A Fuel injector system
EP0753660A1 (en) * 1995-07-14 1997-01-15 Isuzu Motors Limited Fuel injection device for internal combustion engines
DE19742320A1 (en) * 1997-09-25 1999-04-01 Bosch Gmbh Robert Fuel injector

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9508623D0 (en) 1995-04-28 1995-06-14 Lucas Ind Plc "Fuel injection nozzle"
GB9520243D0 (en) 1995-10-04 1995-12-06 Lucas Ind Plc Injector
GB9606803D0 (en) 1996-03-30 1996-06-05 Lucas Ind Plc Injection nozzle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2759255A1 (en) * 1977-12-31 1979-07-12 Bosch Gmbh Robert Compact fuel injection valve for IC engine - has hydraulic relay ball valve between fuel feed and return to control fuel leak off
US5263645A (en) * 1991-11-01 1993-11-23 Paul Marius A Fuel injector system
EP0753660A1 (en) * 1995-07-14 1997-01-15 Isuzu Motors Limited Fuel injection device for internal combustion engines
DE19742320A1 (en) * 1997-09-25 1999-04-01 Bosch Gmbh Robert Fuel injector

Also Published As

Publication number Publication date
JPH11229993A (en) 1999-08-24
EP0921302A2 (en) 1999-06-09
GB9725802D0 (en) 1998-02-04

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