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EP1116879A3 - Spring seat - Google Patents

Spring seat Download PDF

Info

Publication number
EP1116879A3
EP1116879A3 EP00311690A EP00311690A EP1116879A3 EP 1116879 A3 EP1116879 A3 EP 1116879A3 EP 00311690 A EP00311690 A EP 00311690A EP 00311690 A EP00311690 A EP 00311690A EP 1116879 A3 EP1116879 A3 EP 1116879A3
Authority
EP
European Patent Office
Prior art keywords
seating member
bore
workpiece
spring seat
region
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Withdrawn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
EP00311690A
Other languages
German (de)
French (fr)
Other versions
EP1116879A2 (en
Inventor
Alan Conway Green
John William Stevens
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
Publication of EP1116879A2 publication Critical patent/EP1116879A2/en
Publication of EP1116879A3 publication Critical patent/EP1116879A3/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Withdrawn legal-status Critical Current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
    • 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
    • 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
    • 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
    • F02M2200/50—Arrangements of springs for valves used in fuel injectors or fuel injection pumps
    • F02M2200/505—Adjusting spring tension by sliding spring seats

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

The present invention provides a workpiece (10) having a blind bore (12) of stepped form defining a chamber (16a, 16b) within which a seating member (14) is arranged. A region of the seating member (14) is shaped to form an interference fit within a first part (12a) of the bore (12), the shaped region of the seating member (14) being provided with one or more relieved sections (18) to ease insertion of the seating member (14) into the bore (12) during assembly of the workpiece (10). Cooperation between the seating member (14) and the first part (12a) of the bore (12) serves to retain the seating member (14) in position within the bore (12).
The invention is particularly suited to being a nozzle holder body for a nozzle body of a fuel injector.
EP00311690A 2000-01-14 2000-12-27 Spring seat Withdrawn EP1116879A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0000909A GB0000909D0 (en) 2000-01-14 2000-01-14 Workpiece
GB0000909 2000-01-14

Publications (2)

Publication Number Publication Date
EP1116879A2 EP1116879A2 (en) 2001-07-18
EP1116879A3 true EP1116879A3 (en) 2003-10-15

Family

ID=9883743

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00311690A Withdrawn EP1116879A3 (en) 2000-01-14 2000-12-27 Spring seat

Country Status (2)

Country Link
EP (1) EP1116879A3 (en)
GB (1) GB0000909D0 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5165656A (en) * 1991-03-26 1992-11-24 Robert Bosch Gmbh Adjusting bush for an electromagnetically actuatable valve
EP0568845A1 (en) * 1992-05-02 1993-11-10 Robert Bosch Gmbh Fuel injector for internal combustion engines
US5301874A (en) * 1990-05-26 1994-04-12 Robert Bosch Gmbh Adjusting sleeve for an electromagnetically actuatable valve
EP0653561A1 (en) * 1993-11-11 1995-05-17 Lucas Industries Public Limited Company Fuel injection nozzle
DE19638339A1 (en) * 1996-09-19 1998-03-26 Bosch Gmbh Robert Fuel injection valve for internal combustion engines

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5301874A (en) * 1990-05-26 1994-04-12 Robert Bosch Gmbh Adjusting sleeve for an electromagnetically actuatable valve
US5165656A (en) * 1991-03-26 1992-11-24 Robert Bosch Gmbh Adjusting bush for an electromagnetically actuatable valve
EP0568845A1 (en) * 1992-05-02 1993-11-10 Robert Bosch Gmbh Fuel injector for internal combustion engines
EP0653561A1 (en) * 1993-11-11 1995-05-17 Lucas Industries Public Limited Company Fuel injection nozzle
DE19638339A1 (en) * 1996-09-19 1998-03-26 Bosch Gmbh Robert Fuel injection valve for internal combustion engines

Also Published As

Publication number Publication date
GB0000909D0 (en) 2000-03-08
EP1116879A2 (en) 2001-07-18

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