EP1548273A1 - Einspritzdüse zum Einspritzen eines Fluides - Google Patents
Einspritzdüse zum Einspritzen eines Fluides Download PDFInfo
- 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
Links
- 238000002347 injection Methods 0.000 title claims abstract description 30
- 239000007924 injection Substances 0.000 title claims abstract description 30
- 239000012530 fluid Substances 0.000 title claims abstract description 9
- 239000012510 hollow fiber Substances 0.000 claims abstract description 34
- 239000000919 ceramic Substances 0.000 claims abstract description 19
- 239000000446 fuel Substances 0.000 claims abstract description 11
- 239000011248 coating agent Substances 0.000 claims abstract description 8
- 238000000576 coating method Methods 0.000 claims abstract description 8
- 238000002485 combustion reaction Methods 0.000 claims abstract description 7
- 229910000679 solder Inorganic materials 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims abstract description 3
- 229910052751 metal Inorganic materials 0.000 claims abstract description 3
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 3
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 3
- 125000002524 organometallic group Chemical group 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 abstract 1
- 239000000463 material Substances 0.000 description 3
- 229910000640 Fe alloy Inorganic materials 0.000 description 2
- 241000383403 Solen Species 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Images
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)
Abstract
Description
- Fig. 1
- einen Schnitt durch eine Einspritzdüse mit einem als keramische Hohlfaser ausgebildeten Düsenkanal, welcher in einen metallischen Düsenkörper eingebettet ist,
- Fig. 2
- einen Schnitt durch eine Einspritzdüse in einer alternativen Ausführung, gemäß der zwei parallel verlaufende und als keramische Hohlfasern ausgebildete Düsenkanäle in einem Düsenkörper vorgesehen sind.
Claims (10)
- Einspritzdüse zum Einspritzen eines Fluids, mit einem Düsenkörper (2) und mindestens einem in den Düsenkörper (2) eingebetteten Düsenkanal (3),
dadurch gekennzeichnet, dass der Düsenkanal (3) als keramische Hohlfaser ausgebildet ist. - Einspritzdüse nach Anspruch 1,
dadurch gekennzeichnet, dass die Innenwandung (4) der keramischen Hohlfaser zur Reduzierung des Strömungswiderstandes eine Beschichtung aufweist. - Einspritzdüse nach Anspruch 2,
dadurch gekennzeichnet, dass die Beschichtung aus über metallorganische Sole hergestellte Metalloxide oder Keramiken besteht. - Einspritzdüse nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, dass die Austrittsöffnung der Hohlfaser mit der Stirnseite des Düsenkörpers (2) in einer Austrittsebene (5) liegt. - Einspritzdüse nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, dass eine Mehrzahl von Hohlfasern als Düsenkanäle (3) in den Düsenkörper (2) eingebettet sind. - Einspritzdüse nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, dass der Außendurchmesser der Hohlfaser größer als 20 µm und nicht größer als 2 mm ist. - Einspritzdüse nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, dass der Innendurchmesser der Hohlfaser zwischen 20 µm und 1 mm liegt. - Einspritzdüse nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet, dass der Düsenkörper (2) aus Metall besteht. - Verwendung der Einspritzdüse nach einem der Ansprüche 1 bis 8 zum Einspritzen von Kraftstoff in den Zylinder einer Brennkraftmaschine.
- Verwendung der Einspritzdüse nach einem der Ansprüche 1 bis 8 zum Aufbringen von Lötzinn auf Leiterplatten.
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 (de) | 2005-06-29 |
| EP1548273B1 EP1548273B1 (de) | 2006-08-30 |
Family
ID=34530414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04106720A Expired - Lifetime EP1548273B1 (de) | 2003-12-23 | 2004-12-20 | Einspritzdüse zum Einspritzen eines Fluides |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1548273B1 (de) |
| AT (1) | ATE338208T1 (de) |
| DE (2) | DE10361576A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1845255A1 (de) * | 2006-04-13 | 2007-10-17 | Robert Bosch Gmbh | Kraftstoffinjektor mit hoher Lebensdauer und Verschleißfestigkeit |
Citations (4)
| 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 (de) * | 2000-03-30 | 2001-10-04 | Siemens Automotive Corporation | Ablagerungsbeständiges Material für einen Kraftstoffeinspritzsitz und Herstellungsverfahren |
| DE10044764A1 (de) * | 2000-09-11 | 2002-04-04 | Ewm Hightec Welding Gmbh | Vorrichtung zum Plasmaschweißen und/oder Plasmaschneiden |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3602921A1 (de) * | 1986-01-31 | 1987-08-06 | Rolf Daume | Einspritzduese |
| DE59809598D1 (de) * | 1997-12-28 | 2003-10-16 | Klaus Rennebeck | Brennstoffzelleneinheit |
| DE10207197A1 (de) * | 2002-02-21 | 2003-09-04 | Alstom Switzerland Ltd | Hochdruckeinspritzdüse, insbesondere für den Einsatz als Explosionszerstäuber |
-
2003
- 2003-12-23 DE DE10361576A patent/DE10361576A1/de not_active Withdrawn
-
2004
- 2004-12-20 EP EP04106720A patent/EP1548273B1/de not_active Expired - Lifetime
- 2004-12-20 DE DE502004001333T patent/DE502004001333D1/de not_active Expired - Lifetime
- 2004-12-20 AT AT04106720T patent/ATE338208T1/de not_active IP Right Cessation
Patent Citations (4)
| 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 (de) * | 2000-03-30 | 2001-10-04 | Siemens Automotive Corporation | Ablagerungsbeständiges Material für einen Kraftstoffeinspritzsitz und Herstellungsverfahren |
| DE10044764A1 (de) * | 2000-09-11 | 2002-04-04 | Ewm Hightec Welding Gmbh | Vorrichtung zum Plasmaschweißen und/oder Plasmaschneiden |
Non-Patent Citations (2)
| 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)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1845255A1 (de) * | 2006-04-13 | 2007-10-17 | Robert Bosch Gmbh | Kraftstoffinjektor mit hoher Lebensdauer und Verschleißfestigkeit |
Also Published As
| Publication number | Publication date |
|---|---|
| DE502004001333D1 (de) | 2006-10-12 |
| EP1548273B1 (de) | 2006-08-30 |
| DE10361576A1 (de) | 2005-07-28 |
| ATE338208T1 (de) | 2006-09-15 |
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