DE59002457D1 - Fuel injection nozzle for internal combustion engines. - Google Patents

Fuel injection nozzle for internal combustion engines.

Info

Publication number
DE59002457D1
DE59002457D1 DE90114186T DE59002457T DE59002457D1 DE 59002457 D1 DE59002457 D1 DE 59002457D1 DE 90114186 T DE90114186 T DE 90114186T DE 59002457 T DE59002457 T DE 59002457T DE 59002457 D1 DE59002457 D1 DE 59002457D1
Authority
DE
Germany
Prior art keywords
valve seat
nozzle needle
conical
nozzle
edge
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
DE90114186T
Other languages
German (de)
Inventor
Harald Schmidt
Theodor Kauba
Josef Morell
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.)
Steyr Daimler Puch AG
Original Assignee
Steyr Daimler Puch AG
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 Steyr Daimler Puch AG filed Critical Steyr Daimler Puch AG
Application granted granted Critical
Publication of DE59002457D1 publication Critical patent/DE59002457D1/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
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
    • F02M61/1846—Dimensional characteristics of discharge orifices
    • 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

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 invention relates to a fuel injection nozzle for internal combustion engines of the multiple hole type with a nozzle housing 1 ending in a nozzle cup 3 and a nozzle needle 7 carried in this, which on the inside forms a conical valve seat 4 for the nozzle needle 7, likewise conical at its end and sprung against the valve seat 4 and in the area of this valve seat has at least one jet bore 15 covered by the conical end 8 of the nozzle needle 7 when the valve is closed, the conical valve seat 4 with sharp edges passing into a blind hole 6 and the conical section 8 of the nozzle needle 7 being defined towards the blind hole by an edge 16. Under the pressure of the fuel delivered the nozzle needle 7 in a first lifting phase rises from the valve seat against the force of a spring and bears on a stop, which in turn in a second lifting phase is to a limited extent displaceable against the force of another spring. When the valve is closed, the centre point of the inlet hole 17 of the jet bore 15 or at least one of the jet bores 15 is at a short distance a or A from the two edges 5;16 provided on the transition of the valve seat 4 to the blind hole and at the limit of the conical section 8 of the nozzle needle 7, which on the one edge 5;16 is at most one and a half times the diameter of the inlet hole 17 and on the other edge 16;5 is designed equal to or greater than this amount. <IMAGE>
DE90114186T 1989-08-17 1990-07-24 Fuel injection nozzle for internal combustion engines. Expired - Lifetime DE59002457D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT195189 1989-08-17

Publications (1)

Publication Number Publication Date
DE59002457D1 true DE59002457D1 (en) 1993-09-30

Family

ID=3524573

Family Applications (1)

Application Number Title Priority Date Filing Date
DE90114186T Expired - Lifetime DE59002457D1 (en) 1989-08-17 1990-07-24 Fuel injection nozzle for internal combustion engines.

Country Status (4)

Country Link
EP (1) EP0413173B1 (en)
JP (1) JP2811228B2 (en)
AT (1) ATE93583T1 (en)
DE (1) DE59002457D1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4432686C2 (en) * 1994-09-14 1996-09-05 Man B & W Diesel Ag Cross-section controlled injection nozzle
DE19547423B4 (en) * 1995-12-19 2008-09-18 Robert Bosch Gmbh Fuel injection valve for internal combustion engines
EP0809017A1 (en) * 1996-05-22 1997-11-26 Steyr-Daimler-Puch Aktiengesellschaft Two-stage fuel injection nozzel for internal combustion engine
ES2141624T3 (en) * 1997-03-26 2000-03-16 Bayerische Motoren Werke Ag FUEL INJECTION NOZZLE FOR AN INTERNAL COMBUSTION ENGINE.
KR100444446B1 (en) * 2001-09-29 2004-08-16 현대자동차주식회사 Injection nozzle
DE102010032050B4 (en) * 2010-07-23 2017-12-21 Continental Automotive Gmbh Nozzle body with blind hole

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH402510A (en) * 1963-05-14 1965-11-15 Sulzer Ag Fuel injection valve of a piston internal combustion engine
FR2050592A5 (en) * 1969-06-18 1971-04-02 Ffsa
CH612733A5 (en) * 1976-05-26 1979-08-15 Sulzer Ag Nozzle of a fuel injection valve of a piston internal combustion engine
DE2841967A1 (en) * 1978-09-27 1980-04-10 Daimler Benz Ag Multi-hole injection nozzle - has needle boss freeing main injection hole immediately after preliminary injection
JPS58122779U (en) * 1982-02-15 1983-08-20 日産自動車株式会社 Internal combustion engine fuel injection nozzle
JPS6026163A (en) * 1983-07-23 1985-02-09 Toyota Motor Corp Fuel injection valve for diesel engine
JPS6066874U (en) * 1983-10-14 1985-05-11 いすゞ自動車株式会社 Fuel injection nozzle for diesel engine
DE3420924A1 (en) * 1984-06-05 1985-12-05 Bayer Ag, 5090 Leverkusen ADHESIVES WITH A HIGH LEVEL OF LIABILITY ON PLASTICS
US4715541A (en) * 1985-02-26 1987-12-29 Steyr-Daimler-Puch Ag Fuel injection nozzle for combustion engines
JP2584728B2 (en) * 1987-10-02 1997-02-26 株式会社ゼクセル Fuel injection nozzle
JPH0643496Y2 (en) * 1988-07-25 1994-11-14 株式会社ゼクセル Fuel injection nozzle

Also Published As

Publication number Publication date
JPH0388960A (en) 1991-04-15
EP0413173B1 (en) 1993-08-25
JP2811228B2 (en) 1998-10-15
EP0413173A2 (en) 1991-02-20
ATE93583T1 (en) 1993-09-15
EP0413173A3 (en) 1991-03-06

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition