WO1999051872A1 - Buse d'injection de carburant a geometrie de canal d'orifice d'injection optimisee, ainsi que procede pour la production d'une telle geometrie de canal d'orifice d'injection - Google Patents

Buse d'injection de carburant a geometrie de canal d'orifice d'injection optimisee, ainsi que procede pour la production d'une telle geometrie de canal d'orifice d'injection Download PDF

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Publication number
WO1999051872A1
WO1999051872A1 PCT/DE1999/000968 DE9900968W WO9951872A1 WO 1999051872 A1 WO1999051872 A1 WO 1999051872A1 DE 9900968 W DE9900968 W DE 9900968W WO 9951872 A1 WO9951872 A1 WO 9951872A1
Authority
WO
WIPO (PCT)
Prior art keywords
nozzle
spray hole
nozzle body
fuel
hole channel
Prior art date
Application number
PCT/DE1999/000968
Other languages
German (de)
English (en)
Inventor
Günter LEWENTZ
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO1999051872A1 publication Critical patent/WO1999051872A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
    • 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
    • F02M61/182—Discharge orifices being situated in different transversal planes with respect to valve member direction of movement

Definitions

  • the spark erosion process is a thermal removal process in which a sequence of electrical discharges is used to remove material from metallic workpieces.
  • a high voltage is applied between an electrode and the workpiece, which are separated by an electrically insulating liquid, which ensures electrical breakdown through the liquid.
  • the breakdown creates a discharge channel in the liquid through which electrical current flows and in which high temperatures and pressures can be found.
  • the electrical current flow causes a melt to form on the workpiece and on the electrode.
  • Tungsten, silver and hard metal in particular have emerged as the electrode material for producing channel bores with a diameter of 0.05 to 0.4 mm and a material thickness of approximately 1 mm, such as result from the formation of a spray hole channel in a nozzle body and graphite proved to be advantageous.
  • Water is usually used as the liquid.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

L'invention concerne une buse d'injection de carburant pour moteurs à combustion interne, comportant un corps d'injecteur (1) et une aiguille d'injecteur (3) qui y est introduite et présentant un canal d'orifice d'injection (4) courbe dans la calotte conique (11) du corps d'injecteur (1). On peut produire un tel canal d'orifice d'injection (4) courbe au moyen d'un procédé d'électro-érosion dans lequel on fait avancer une électrode recourbée en conséquence le long d'une trajectoire circulaire dans le corps d'injecteur (1).
PCT/DE1999/000968 1998-04-02 1999-03-29 Buse d'injection de carburant a geometrie de canal d'orifice d'injection optimisee, ainsi que procede pour la production d'une telle geometrie de canal d'orifice d'injection WO1999051872A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1998114858 DE19814858A1 (de) 1998-04-02 1998-04-02 Kraftstoffeinspritzdüse mit optimierter Spritzlochkanalgeometrie sowie Verfahren zur Herstellung einer solchen Spritzlochkanalgeometrie
DE19814858.5 1998-04-02

Publications (1)

Publication Number Publication Date
WO1999051872A1 true WO1999051872A1 (fr) 1999-10-14

Family

ID=7863411

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1999/000968 WO1999051872A1 (fr) 1998-04-02 1999-03-29 Buse d'injection de carburant a geometrie de canal d'orifice d'injection optimisee, ainsi que procede pour la production d'une telle geometrie de canal d'orifice d'injection

Country Status (2)

Country Link
DE (1) DE19814858A1 (fr)
WO (1) WO1999051872A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10495043B2 (en) 2009-07-30 2019-12-03 3M Innovative Properties Company Fuel injector nozzle
SE2251086A1 (en) * 2022-09-20 2024-03-21 Scania Cv Ab Fuel Injector Nozzle, Fuel Injector, Internal Combustion Engine, and Vehicle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2058905A (en) * 1979-09-08 1981-04-15 Lucas Industries Ltd Fuel Injection Nozzles
US5029759A (en) * 1989-11-17 1991-07-09 Cummins Engine Company, Inc. Curved hole machining method and fuel injector formed thereby
DE19507171C1 (de) 1995-03-02 1996-08-14 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
JPH10331747A (ja) * 1997-06-02 1998-12-15 Denso Corp 燃料噴射ノズルおよびその製造方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL213363A (fr) * 1955-12-30
CH340093A (de) * 1956-05-12 1959-07-31 Sulzer Ag Brennstoffeinspritzdüse und Verfahren zu deren Herstellung
US3388232A (en) * 1965-04-22 1968-06-11 Allis Chalmers Mfg Co Electrical discharge machining method to obtain very close concentricities on a valve body

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2058905A (en) * 1979-09-08 1981-04-15 Lucas Industries Ltd Fuel Injection Nozzles
US5029759A (en) * 1989-11-17 1991-07-09 Cummins Engine Company, Inc. Curved hole machining method and fuel injector formed thereby
DE19507171C1 (de) 1995-03-02 1996-08-14 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
JPH10331747A (ja) * 1997-06-02 1998-12-15 Denso Corp 燃料噴射ノズルおよびその製造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 099, no. 003 31 March 1999 (1999-03-31) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10495043B2 (en) 2009-07-30 2019-12-03 3M Innovative Properties Company Fuel injector nozzle
US10539106B2 (en) 2009-07-30 2020-01-21 3M Innovative Properties Company Method of making a fuel injector nozzle
SE2251086A1 (en) * 2022-09-20 2024-03-21 Scania Cv Ab Fuel Injector Nozzle, Fuel Injector, Internal Combustion Engine, and Vehicle
WO2024063681A1 (fr) * 2022-09-20 2024-03-28 Scania Cv Ab Buse d'injecteur de carburant, injecteur de carburant, moteur à combustion interne et véhicule

Also Published As

Publication number Publication date
DE19814858A1 (de) 1999-10-14

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