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DE60313914D1 - Fuel injector - Google Patents

Fuel injector

Info

Publication number
DE60313914D1
DE60313914D1 DE60313914T DE60313914T DE60313914D1 DE 60313914 D1 DE60313914 D1 DE 60313914D1 DE 60313914 T DE60313914 T DE 60313914T DE 60313914 T DE60313914 T DE 60313914T DE 60313914 D1 DE60313914 D1 DE 60313914D1
Authority
DE
Germany
Prior art keywords
valve needle
fuel
pressure
high pressure
delivery chamber
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
DE60313914T
Other languages
German (de)
Other versions
DE60313914T2 (en
Inventor
P Buckley
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 Operations Luxembourg SARL
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
Application granted granted Critical
Publication of DE60313914D1 publication Critical patent/DE60313914D1/en
Publication of DE60313914T2 publication Critical patent/DE60313914T2/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
    • F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
    • F02M61/205—Means specially adapted for varying the spring tension or assisting the spring force to close the injection-valve, e.g. with damping of valve lift

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 an internal combustion engine includes a valve needle (14) having a first surface which is engageable with a valve needle seating to control fuel flow between a delivery chamber (20) and an outlet and a high pressure supply passage (22) for supplying fuel at high pressure to the delivery chamber (20). A thrust surface of the valve needle (14) is exposed to fuel pressure within the delivery chamber (20) such that a force is applied to the valve needle (14) to urge the needle away from the valve seating. The injector also includes a pressure chamber (32) in communication with the high pressure supply passage (22) which is defined, in part, by a surface associated with the valve needle (14) at an end thereof remote from the outlet, and means (34, 40; 22, 56, 48, 54) for generating a variable difference in fuel pressure between the delivery chamber (20) and the pressure chamber (32) in dependence upon the rate of increase of fuel pressure within the high pressure supply passage (22), thereby to provide a variable nozzle opening pressure at which the valve needle is caused to lift from the valve needle seating to initiate injection. <IMAGE>
DE60313914T 2002-04-20 2003-04-16 Fuel injector Expired - Lifetime DE60313914T2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0209049 2002-04-20
GBGB0209049.6A GB0209049D0 (en) 2002-04-20 2002-04-20 Fuel injector

Publications (2)

Publication Number Publication Date
DE60313914D1 true DE60313914D1 (en) 2007-07-05
DE60313914T2 DE60313914T2 (en) 2007-09-20

Family

ID=9935192

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60313914T Expired - Lifetime DE60313914T2 (en) 2002-04-20 2003-04-16 Fuel injector

Country Status (4)

Country Link
EP (1) EP1359319B1 (en)
AT (1) ATE363024T1 (en)
DE (1) DE60313914T2 (en)
GB (1) GB0209049D0 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10323562A1 (en) * 2003-05-26 2004-12-30 Robert Bosch Gmbh Fuel injection device for an internal combustion engine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4684067A (en) * 1986-03-21 1987-08-04 General Motors Corporation Two-stage, hydraulic-assisted fuel injection nozzle
GB9520243D0 (en) * 1995-10-04 1995-12-06 Lucas Ind Plc Injector
DE19752496A1 (en) * 1997-11-27 1999-06-02 Bosch Gmbh Robert Fuel injection valve for internal combustion engines
KR20010052790A (en) * 1998-09-10 2001-06-25 로버트 에이. 브드맨 Fuel injector
DE19930832A1 (en) * 1999-07-03 2001-01-11 Bosch Gmbh Robert Fuel injector
DE10112426A1 (en) * 2001-03-15 2002-09-19 Bosch Gmbh Robert Fuel injection valve has pressure chamber and spring chamber connected by throttling connection so that pressure in spring chamber after termination of injection cycle up to beginning of next cycle falls off to standing pressure

Also Published As

Publication number Publication date
DE60313914T2 (en) 2007-09-20
ATE363024T1 (en) 2007-06-15
GB0209049D0 (en) 2002-05-29
EP1359319A2 (en) 2003-11-05
EP1359319A3 (en) 2004-11-10
EP1359319B1 (en) 2007-05-23

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: DELPHI TECHNOLOGIES HOLDING S.A.R.L., BASCHARA, LU