EP0400886A1 - Kraftstoffeinspritzdüse - Google Patents

Kraftstoffeinspritzdüse Download PDF

Info

Publication number
EP0400886A1
EP0400886A1 EP90305613A EP90305613A EP0400886A1 EP 0400886 A1 EP0400886 A1 EP 0400886A1 EP 90305613 A EP90305613 A EP 90305613A EP 90305613 A EP90305613 A EP 90305613A EP 0400886 A1 EP0400886 A1 EP 0400886A1
Authority
EP
European Patent Office
Prior art keywords
valve member
fuel
spring
seating
abutment plate
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Withdrawn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
EP90305613A
Other languages
English (en)
French (fr)
Inventor
Graham Rhys Lewis
Geoffrey Carpenter
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.)
ZF International UK Ltd
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 EP0400886A1 publication Critical patent/EP0400886A1/de
Withdrawn legal-status Critical Current

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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
    • 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
    • F02M45/083—Having two or more closing springs acting on injection-valve

Definitions

  • a fuel injection nozzle of the kind specified comprises a flanged intermediate member interposed between the valve member and the push rod, an abutment plate engaged by said second spring to urge the abutment plate into contact with the adjacent surface of said spacer member, said abutment plate being positioned in alignment with the flange of said intermediate member and shim means interposed between said flange and the abutment plate to determine said initial movement of the valve member away from the seating.
  • the valve member has a cylindrical extension 16 of reduced diameter which projects beyond the end of the nozzle body 10 through an aperture 20 formed in a spacer member 17 which is interposed between the nozzle body and a nozzle holder 18.
  • the nozzle body and the spacer member are retained relative to the holder by means of a cap nut 19.
  • the aperture 20 is smaller in diameter than the bore 11.
  • first and second spring chambers 21, 22 Formed in the nozzle holder are first and second spring chambers 21, 22.
  • the chambers are disposed in spaced end to end relationship with the second spring chamber 22 being closer to the spacer member 17.
  • a first coiled compression spring 23 one end of which is in engagement with an adjustable abutment 24 which is in screw thread engagement with the wall of the chamber 21.
  • the opposite end of the spring 23 engages with a spring abutment 25 which is formed integrally with a push rod 26 which exends through an opening between the spring chambers and through the second spring chamber where it is in engagement with a flanged intermediate member 27 mounted on the extension 16 of the valve member.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP90305613A 1989-06-02 1990-05-23 Kraftstoffeinspritzdüse Withdrawn EP0400886A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8912647 1989-06-02
GB898912647A GB8912647D0 (en) 1989-06-02 1989-06-02 Fuel injection nozzles

Publications (1)

Publication Number Publication Date
EP0400886A1 true EP0400886A1 (de) 1990-12-05

Family

ID=10657740

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90305613A Withdrawn EP0400886A1 (de) 1989-06-02 1990-05-23 Kraftstoffeinspritzdüse

Country Status (3)

Country Link
EP (1) EP0400886A1 (de)
JP (1) JPH0374566A (de)
GB (1) GB8912647D0 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5267694A (en) * 1991-01-17 1993-12-07 Robert Bosch Gmbh Fuel injection nozzle for internal combustion engines
US5931388A (en) * 1996-07-03 1999-08-03 Robert Bosch Gmbh Fuel injection valve for internal combustion engines

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1594174A (en) * 1977-03-16 1981-07-30 Bosch Gmbh Robert Fuel injection nozzle for internal combustion engines
GB2188367A (en) * 1986-03-29 1987-09-30 Bosch Gmbh Robert I.c. engine fuel injection nozzle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1594174A (en) * 1977-03-16 1981-07-30 Bosch Gmbh Robert Fuel injection nozzle for internal combustion engines
GB2188367A (en) * 1986-03-29 1987-09-30 Bosch Gmbh Robert I.c. engine fuel injection nozzle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5267694A (en) * 1991-01-17 1993-12-07 Robert Bosch Gmbh Fuel injection nozzle for internal combustion engines
US5931388A (en) * 1996-07-03 1999-08-03 Robert Bosch Gmbh Fuel injection valve for internal combustion engines

Also Published As

Publication number Publication date
JPH0374566A (ja) 1991-03-29
GB8912647D0 (en) 1989-07-19

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19910606