EP1548273B1 - Buse d'injection pour injecter un fluide - Google Patents

Buse d'injection pour injecter un fluide Download PDF

Info

Publication number
EP1548273B1
EP1548273B1 EP04106720A EP04106720A EP1548273B1 EP 1548273 B1 EP1548273 B1 EP 1548273B1 EP 04106720 A EP04106720 A EP 04106720A EP 04106720 A EP04106720 A EP 04106720A EP 1548273 B1 EP1548273 B1 EP 1548273B1
Authority
EP
European Patent Office
Prior art keywords
injection nozzle
hollow fiber
nozzle
injector
injecting
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
EP04106720A
Other languages
German (de)
English (en)
Other versions
EP1548273A1 (fr
Inventor
Stefan Dr. Tudyka
Andreas Franz
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
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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 injecting a fluid according to the preamble of claim 1, as known for example from the publications JP 04 103871 A, JP 04 081568 A and EP 1 138 936 A.
  • the invention is based on the problem of forming an injector for injecting a fluid temperature resistant.
  • 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, it is particularly resistant to thermal shock and also has a low creep behavior. These material properties of the ceramic hollow fiber distinguish these from conventional nozzle channels made of iron alloys.
  • the temperature resistance causes the ceramic hollow fiber does not or only very slightly expands or contracts with temperature fluctuations or temperature gradients and thus is subject to no or only insignificant temperature-induced changes in length.
  • the inner wall of the ceramic hollow fiber with a coating which is produced for example from organometallic sols.
  • the coating effects a sealing of the hollow fiber inner wall so that no fluid passes through the hollow fiber wall can pass through or can penetrate into the Hohlmaschinewandung.
  • the outlet opening of the hollow fiber terminates with the end face of the nozzle body, so that the outlet opening of the hollow fiber and the end face of the nozzle body lie in a common exit plane.
  • This embodiment has the advantage that the hollow-fiber nozzle channel is protected on the one hand inside the nozzle body and on the other hand, the fluid to be injected does not come directly into contact with the nozzle body.
  • the injector finds particular use in injecting fuel into the cylinder of an internal combustion engine. In addition, however, further applications come into consideration, both gaseous and liquid fluids are to be injected via the injection nozzle according to the invention. Fields of application are generally the automobile industry, in addition however also the combustion technology as well as the Spinnerei- and textile technology. The injector can also be used to selectively apply solder to printed circuit boards.
  • the Lötanphase may be punctiform or square shaped.
  • the hollow fiber nozzle or the hollow fiber nozzle cross-section must be designed geometrically.
  • nozzle body 2 of metal, for example of an iron alloy of the composition Fe13Cr1.3Si to Fe17Cr1.5Si.
  • a nozzle channel 3 is embedded, which is formed as a ceramic hollow fiber, which may be made of an inorganic material such as alumina, zirconia, silicon carbide or silicon oxide.
  • the hollow fiber 3 is rectilinear and has, for example, an outer diameter of at least 20-30 ⁇ m to about 1 or 2 mm and an inner diameter which is in the range between 20 ⁇ m and about 1 mm. Typically, the outer diameter is 1.2 mm and the inner diameter is 1 mm.
  • the outlet opening of the nozzle channel 3 terminates with the end face of the nozzle body 2, both the outlet opening and the end face lie in a common exit plane. 5
  • the inner wall of the nozzle channel may be provided with a coating which causes a smoothing and a sealing of the inner wall.
  • an alternative embodiment for an injection nozzle 1 is shown.
  • the nozzle body 2 of the injection nozzle two nozzle channels 3 are introduced, which are parallel and each formed as a ceramic hollow fiber, which are firmly embedded in the nozzle body 2.
  • the inner walls 4 of both nozzle channels 3 are coated.

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)

Claims (8)

  1. Injecteur pour injecter un fluide, avec un porte-injecteur (2) et au moins un canal d'injection (3) incorporé dans le port-injecteur (2), le canal d'injection (3) ayant la forme d'une fibre creuse céramique, caractérisé en ce que la paroi interne (4) de la fibre creuse céramique présente un revêtement pour réduire la perte de charge, le revêtement consistant d'oxydes métalliques produits de saumure organométallique ou de céramiques.
  2. Injecteur selon la revendication 1, caractérisé en ce que l'ouverture de sortie de la fibre creuse se trouve au même niveau de sortie (5) avec le front du porte-injecteur (2).
  3. Injecteur selon l'une des revendications 1 ou 2, caractérisé en ce que la plupart des fibres creuses sont incorporées comme canaux d'injection (3) dans le porte-injecteur (2).
  4. Injecteur selon l'une des revendications 1 à 3, caractérisé en ce que le diamètre extérieur de la fibre creuse est plus grand que 20 µm et pas plus grand que 2 mm.
  5. Injecteur selon l'une des revendications 1 à 4, caractérisé en ce que la taille du diamètre intérieur de la fibre creuse est entre 20 µm et 1 mm.
  6. Injecteur selon l'une des revendications 1 à 5, caractérisé en ce que le porte-injecteur (2) est fait en métal.
  7. Utilisation de l'injecteur selon l'une des revendications 1 à 6 pour injecter du carburant dans le cylindre d'un moteur à combustion interne.
  8. Utilisation de l'injecteur selon l'une des revendications 1 à 7 pour appliquer de l'étain de soudure sur des cartes imprimées.
EP04106720A 2003-12-23 2004-12-20 Buse d'injection pour injecter un fluide Expired - Lifetime EP1548273B1 (fr)

Applications Claiming Priority (2)

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

Publications (2)

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

Family

ID=34530414

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04106720A Expired - Lifetime 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)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006017449A1 (de) * 2006-04-13 2007-10-18 Robert Bosch Gmbh Kraftstoffinjektor mit hoher Lebensdauer und Verschleißfestigkeit

Family Cites Families (7)

* 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
JP2853293B2 (ja) * 1990-07-24 1999-02-03 いすゞ自動車株式会社 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
ATE250183T1 (de) * 1997-12-28 2003-10-15 Klaus Rennebeck Brennstoffeinspritzdüse
US6422487B1 (en) * 2000-03-30 2002-07-23 Siemens Automotive Corporation Deposit resistant material for a fuel injection seat and method of manufacturing
DE10044764A1 (de) * 2000-09-11 2002-04-04 Ewm Hightec Welding Gmbh Vorrichtung zum Plasmaschweißen und/oder Plasmaschneiden
DE10207197A1 (de) * 2002-02-21 2003-09-04 Alstom Switzerland Ltd Hochdruckeinspritzdüse, insbesondere für den Einsatz als Explosionszerstäuber

Also Published As

Publication number Publication date
DE502004001333D1 (de) 2006-10-12
EP1548273A1 (fr) 2005-06-29
ATE338208T1 (de) 2006-09-15
DE10361576A1 (de) 2005-07-28

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