EP1548273A1 - Buse d'injection pour injecter un fluid - Google Patents

Buse d'injection pour injecter un fluid Download PDF

Info

Publication number
EP1548273A1
EP1548273A1 EP04106720A EP04106720A EP1548273A1 EP 1548273 A1 EP1548273 A1 EP 1548273A1 EP 04106720 A EP04106720 A EP 04106720A EP 04106720 A EP04106720 A EP 04106720A EP 1548273 A1 EP1548273 A1 EP 1548273A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
injection nozzle
hollow fiber
nozzle body
injection
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.)
Granted
Application number
EP04106720A
Other languages
German (de)
English (en)
Other versions
EP1548273B1 (fr
Inventor
Stefan Dr. Tudyka
Franz Andreas
Uwe Dr. Hartmann
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.)
Mann and Hummel GmbH
Original Assignee
Mann and Hummel GmbH
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 Mann and Hummel GmbH filed Critical Mann and Hummel GmbH
Publication of EP1548273A1 publication Critical patent/EP1548273A1/fr
Application granted granted Critical
Publication of EP1548273B1 publication Critical patent/EP1548273B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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
    • F02M61/166—Selection of particular materials

Definitions

  • the invention relates to an injection nozzle for injection a fluid according to the preamble of claim 1.
  • a fuel injection nozzle described which a nozzle body and a Includes nozzle channel, which is embedded in the nozzle body and over which the fuel to be injected is to be supplied.
  • nozzle channel Of the Mouth area of the nozzle channel is in a recessed Recess in the nozzle body into which a tubular Shielding part is inserted, which directly adjoins the nozzle channel connects, with the free end of the shielding protrudes beyond the front of the nozzle body.
  • the shielding part which consists of a ceramic material, has the function to improve the burning process by igniting the ignition Fuel after leaving the nozzle channel allows only if the fuel jet is already in fine drops is fanned out.
  • the shielding should in particular a premature Ignite the fuel to prevent a fire is only possible after exiting the shielding.
  • the invention is based on the problem of an injection nozzle form temperature resistant for injecting a fluid.
  • the injection nozzle according to the invention has a nozzle channel, which is formed as a ceramic hollow fiber.
  • the ceramic Hollow fiber is characterized by a high temperature resistance in particular, it is thermoshock resistant and has also a low creep behavior. These material properties the ceramic hollow fiber draw against this conventional iron-alloy nozzle channels.
  • the temperature resistance causes the ceramic hollow fiber not with temperature fluctuations or temperature gradients or only very slightly expands or contracts and thus no or only insignificant temperature-related changes in length is subject.
  • the inner wall of the ceramic hollow fiber with a coating to provide, for example, organometallic Solen is produced. This will be the required Smoothness on the inner wall of the hollow fiber achieved.
  • the coating is a seal of the hollow fiber inner wall, so no fluid through the hollow fiber wall can pass through or penetrate into the Hohlmaschinewandung can.
  • the injection nozzle finds particular use during injection of fuel in the cylinder of an internal combustion engine. In addition, however, other applications come in Consider, with both gaseous and liquid fluids over the injection nozzle according to the invention are to be injected. applications are generally the automotive industry, beyond but also the combustion technology as well as the spinning and textile technology.
  • the injector can also be used to Apply solder to printed circuit boards. The solder pileups may be punctiform or square shaped.
  • the hollow fiber nozzle or the hollow fiber nozzle cross section be geometrically designed.
  • the injection nozzle 1 shown in Fig. 1 has a nozzle body 2 made of metal, for example, an iron alloy of the composition Fe13Cr1.3Si to Fe17Cr1.5Si.
  • a nozzle channel 3 is embedded, which as a ceramic Hollow fiber is formed of an inorganic material such as alumina, zirconia, silicon carbide or silicon oxide can be made.
  • the hollow fiber 3 is rectilinear and has, for example, an outer diameter from at least 20-30 ⁇ m to about 1 or 2 mm and an inner diameter ranging from 20 ⁇ m to about 1 mm. Typically, the outer diameter is 1.2 mm and the inner diameter 1 mm.
  • the outlet opening of the nozzle channel 3 terminates with the end face of the nozzle body 2, both the outlet opening as well as the front side lie in one common exit level 5.
  • the inner wall of the nozzle channel with a coating be provided, which is a smoothing and a seal the inner wall causes.
  • material for the coating the inner wall 4 come, for example, organometallic Solen produced metal oxides or ceramics in Consideration.
  • Fig. 2 is an alternative embodiment for an injection nozzle 1 shown.
  • the nozzle body 2 of the injection nozzle are introduced two nozzle channels 3, which run parallel and are each formed as a ceramic hollow fiber, in the Nozzle body 2 are firmly embedded.
  • the inner walls 4 both Nozzle channels 3 are coated.
  • more than two nozzle channels in one Injector be provided, with both the possibility exists to design all nozzle channels as ceramic hollow fibers, as well as the possibility is given, only one or one Part of the nozzle channels as ceramic hollow fibers and the rest Produce nozzle channels from other materials. Furthermore it may be appropriate, the nozzle channels 3 at an angle to each other to arrange.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Nozzles (AREA)
EP04106720A 2003-12-23 2004-12-20 Buse d'injection pour injecter un fluide Not-in-force EP1548273B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10361576A DE10361576A1 (de) 2003-12-23 2003-12-23 Einspritzdüse zum Einspritzen eines Fluids
DE10361576 2003-12-23

Publications (2)

Publication Number Publication Date
EP1548273A1 true EP1548273A1 (fr) 2005-06-29
EP1548273B1 EP1548273B1 (fr) 2006-08-30

Family

ID=34530414

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04106720A Not-in-force EP1548273B1 (fr) 2003-12-23 2004-12-20 Buse d'injection pour injecter un fluide

Country Status (3)

Country Link
EP (1) EP1548273B1 (fr)
AT (1) ATE338208T1 (fr)
DE (2) DE10361576A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1845255A1 (fr) * 2006-04-13 2007-10-17 Robert Bosch Gmbh Injecteur de carburant ayant une longévité et une résistance à l'usure élevées

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0481568A (ja) * 1990-07-24 1992-03-16 Isuzu Motors Ltd 燃料噴射ノズルの製造方法
JPH04103871A (ja) * 1990-08-22 1992-04-06 Isuzu Motors Ltd 燃料噴射ノズル及びその製造方法
EP1138936A2 (fr) * 2000-03-30 2001-10-04 Siemens Automotive Corporation Matériau résistant aux dépôts pour siège d'injection de combustible et procédé de fabrication
DE10044764A1 (de) * 2000-09-11 2002-04-04 Ewm Hightec Welding Gmbh Vorrichtung zum Plasmaschweißen und/oder Plasmaschneiden

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3602921A1 (de) * 1986-01-31 1987-08-06 Rolf Daume Einspritzduese
ATE250183T1 (de) * 1997-12-28 2003-10-15 Klaus Rennebeck Brennstoffeinspritzdüse
DE10207197A1 (de) * 2002-02-21 2003-09-04 Alstom Switzerland Ltd Hochdruckeinspritzdüse, insbesondere für den Einsatz als Explosionszerstäuber

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0481568A (ja) * 1990-07-24 1992-03-16 Isuzu Motors Ltd 燃料噴射ノズルの製造方法
JPH04103871A (ja) * 1990-08-22 1992-04-06 Isuzu Motors Ltd 燃料噴射ノズル及びその製造方法
EP1138936A2 (fr) * 2000-03-30 2001-10-04 Siemens Automotive Corporation Matériau résistant aux dépôts pour siège d'injection de combustible et procédé de fabrication
DE10044764A1 (de) * 2000-09-11 2002-04-04 Ewm Hightec Welding Gmbh Vorrichtung zum Plasmaschweißen und/oder Plasmaschneiden

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 016, no. 299 (M - 1274) 2 July 1992 (1992-07-02) *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 343 (M - 1285) 24 July 1992 (1992-07-24) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1845255A1 (fr) * 2006-04-13 2007-10-17 Robert Bosch Gmbh Injecteur de carburant ayant une longévité et une résistance à l'usure élevées

Also Published As

Publication number Publication date
DE10361576A1 (de) 2005-07-28
DE502004001333D1 (de) 2006-10-12
EP1548273B1 (fr) 2006-08-30
ATE338208T1 (de) 2006-09-15

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