EP1548273A1 - Injection nozzle for injecting a fluid - Google Patents
Injection nozzle for injecting a fluid 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
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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)
Abstract
Description
Die Erfindung bezieht sich auf eine Einspritzdüse zum Einspritzen
eines Fluids nach dem Oberbegriff des Anspruches 1.The invention relates to an injection nozzle for injection
a fluid according to the preamble of
In der Druckschrift DE 41 37 914 A1 wird eine KraftstoffEinspritzdüse beschrieben, welche einen Düsenkörper und einen Düsenkanal umfasst, der in den Düsenkörper eingebettet ist und über den der einzuspritzende Kraftstoff zuzuführen ist. Der Mündungsbereich des Düsenkanals befindet sich in einer zurückgesetzten Ausnehmung im Düsenkörper, in die ein rohrförmiges Abschirmteil eingesetzt ist, das sich unmittelbar an den Düsenkanal anschließt, wobei die freie Stirnseite des Abschirmteiles über die Stirnseite des Düsenkörpers herausragt. Das Abschirmteil, das aus einem Keramikmaterial besteht, hat die Funktion, den Abbrennvorgang zu verbessern, indem ein Entzünden des Kraftstoffes nach dem Austritt aus dem Düsenkanal erst ermöglicht wird, wenn der Kraftstoffstrahl bereits in feine Tropfen aufgefächert ist. Das Abschirmteil soll insbesondere ein vorzeitiges Entzünden des Kraftstoffes verhindern, ein Entflammen ist erst nach dem Austritt aus dem Abschirmteil möglich.In the document DE 41 37 914 A1 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. 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.
Bei derartigen Einspritzdüsen ist auf eine hohe Temperaturbeständigkeit insbesondere des Düsenkanals zu achten, welcher erheblichen Temperaturschwankungen unterworfen ist und außerdem über seine Länge gesehen einen hohen Temperaturgradienten aufweisen kann. Diese Temperaturänderungen bzw. -unterschiede können zu Wärmespannungen in der Einspritzdüse führen. Außerdem kann ein unerwünschtes Kriechen im Bereich des Düsenkanals auftreten, wodurch sich die Einspritzgeometrie und damit auch das Einspritzverhalten verschlechtern kann.In such injectors is on a high temperature resistance In particular, the nozzle channel to pay attention to what considerable Temperature fluctuations is subject and moreover seen over its length have a high temperature gradient can. These temperature changes or differences can lead to thermal stress in the injector. Furthermore If there is an undesirable creep in the area of the nozzle channel, whereby the injection geometry and thus also the Injection behavior can worsen.
Der Erfindung liegt das Problem zugrunde, eine Einspritzdüse zum Einspritzen eines Fluids temperaturbeständig auszubilden.The invention is based on the problem of an injection nozzle form temperature resistant for injecting a fluid.
Dieses Problem wird erfindungsgemäß mit den Merkmalen des Anspruches
1 gelöst. Die Unteransprüche geben zweckmäßige Weiterbildungen
an.This problem is inventively with the features of the
Die erfindungsgemäße Einspritzdüse weist einen Düsenkanal auf, welcher als keramische Hohlfaser ausgebildet ist. Die keramische Hohlfaser zeichnet sich durch eine hohe Temperaturbeständigkeit aus, sie ist insbesondere thermoschockbeständig und besitzt außerdem ein geringes Kriechverhalten. Diese Materialeigenschaften der keramischen Hohlfaser zeichnen diese gegenüber herkömmlichen Düsenkanälen aus Eisenlegierungen aus. Die Temperaturbeständigkeit führt dazu, dass die keramische Hohlfaser sich bei Temperaturschwankungen bzw. Temperaturgradienten nicht oder nur sehr geringfügig dehnt bzw. zusammenzieht und somit keinen oder nur unwesentlichen temperaturbedingten Längenänderungen unterworfen ist.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.
Zur Reduzierung des Strömungswiderstandes kann es zweckmäßig sein, die Innenwandung der keramischen Hohlfaser mit einer Beschichtung zu versehen, welche beispielsweise aus metallorganischen Solen hergestellt wird. Hierdurch wird die erforderliche Glätte an der Innenwandung der Hohlfaser erreicht. Außerdem bewirkt die Beschichtung eine Versiegelung der Hohlfaser-Innenwandung, so dass kein Fluid durch die Hohlfaserwandung hindurchtreten kann bzw. in die Hohlfaserwandung eindringen kann.To reduce the flow resistance, it may be appropriate be, 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. In addition causes 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 Hohlfaserwandung can.
Es ist sowohl möglich, lediglich eine einzige, keramische Hohlfaser als Düsenkanal einzusetzen, als auch eine Mehrzahl von Hohlfasern in einer einzigen Einspritzdüse vorzusehen, durch die das Fluid geführt und eingespritzt wird. Im Falle mehrerer Hohlfasern können diese entweder parallel oder aber winklig zueinander angeordnet sein, so dass insbesondere bei einem Einsatz der Einspritzdüse für das Einspritzen von Kraftstoff in die Brennräume von Brennkraftmaschinen eine gezielte Verteilung des Kraftstoffes innerhalb der Brennraumgeometrie durchführbar ist.It is both possible, just a single, ceramic hollow fiber to use as a nozzle channel, as well as a plurality of Provide hollow fibers in a single injector, through the fluid is guided and injected. In case of several Hollow fibers can do this either parallel or at an angle to each other be arranged so that in particular when using the injection nozzle for the injection of fuel in the combustion chambers of internal combustion engines a targeted distribution the fuel within the combustion chamber geometry feasible is.
Zweckmäßig schließt die Austrittsöffnung der Hohlfaser mit der Stirnseite des Düsenkörpers ab, so dass die Austrittsöffnung der Hohlfaser und die Stirnseite des Düsenkörpers in einer gemeinsamen Austrittsebene liegen. Diese Ausführung bietet den Vorteil, dass der Hohlfaser-Düsenkanal einerseits innerhalb des Düsenkörpers geschützt liegt und andererseits das einzuspritzende Fluid nicht unmittelbar in Kontakt mit dem Düsenkörper gelangt.Appropriately closes the outlet opening of the hollow fiber with the Front side of the nozzle body off, leaving the outlet opening the hollow fiber and the end face of the nozzle body in a common Exit level lie. This version offers the Advantage that the hollow fiber nozzle channel on the one hand within the Nozzle body is protected and on the other hand to be injected Fluid not in direct contact with the nozzle body arrives.
Die Einspritzdüse findet insbesondere Verwendung beim Einspritzen von Kraftstoff in den Zylinder einer Brennkraftmaschine. Darüber hinaus kommen aber weitere Anwendungsmöglichkeiten in Betracht, wobei sowohl gasförmige als auch flüssige Fluide über die erfindungsgemäße Einspritzdüse einzuspritzen sind. Anwendungsbereiche sind allgemein der Automobilbau, darüber hinaus aber auch die Verbrennungstechnik sowie die Spinnerei- und Textiltechnik. Die Einspritzdüse kann auch dazu genutzt werden, um Lötzinn gezielt auf Leiterplatten aufzubringen. Die Lötanhäufungen können punktförmig oder quadratisch ausgeformt sein. 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.
Entsprechend muss die Hohlfaserdüse bzw. der Hohlfaserdüsenquerschnitt geometrisch ausgestaltet sein.Accordingly, the hollow fiber nozzle or the hollow fiber nozzle cross section be geometrically designed.
Weitere Vorteile und zweckmäßige Ausführungen sind den weiteren Ansprüchen, der Figurenbeschreibung und den Zeichnungen zu entnehmen. Es zeigen:
- 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.
- Fig. 1
- a section through an injection nozzle with a designed as a ceramic hollow fiber nozzle channel, which is embedded in a metallic nozzle body,
- Fig. 2
- a section through an injection nozzle in an alternative embodiment, according to the two parallel and designed as a ceramic hollow fibers nozzle channels are provided in a nozzle body.
Die in Fig. 1 dargestellte Einspritzdüse 1 besitzt einen Düsenkörper
2 aus Metall, beispielsweise aus einer Eisenlegierung
der Zusammensetzung Fe13Cr1.3Si bis Fe17Cr1.5Si. In den Düsenkörper
2 ist ein Düsenkanal 3 eingebettet, welcher als keramische
Hohlfaser ausgebildet ist, die aus einem anorganischen Material
wie zum Beispiel Aluminiumoxid, Zirkonoxid, Siliziumkarbid
oder Siliziumoxid gefertigt sein kann. Die Hohlfaser 3 ist
geradlinig ausgebildet und besitzt beispielsweise einen Außendurchmesser
von mindestens 20 - 30 µm bis etwa 1 oder 2 mm und
einen Innendurchmesser, der im Bereich zwischen 20 µm bis etwa
1 mm liegt. Typischerweise beträgt der Außendurchmesser 1.2 mm
und der Innendurchmesser 1 mm. Die Austrittsöffnung des Düsenkanals
3 schließt mit der Stirnseite des Düsenkörpers 2 ab, sowohl
die Austrittsöffnung als auch die Stirnseite liegen in einer
gemeinsamen Austrittsebene 5. The
Zur Verbesserung der Fließeigenschaften des durch den Düsenkanal 3 in der eingetragenen Pfeilrichtung zuzuführenden Kraftstoffes kann die Innenwandung des Düsenkanals mit einer Beschichtung versehen sein, welche eine Glättung sowie eine Versiegelung der Innenwandung bewirkt. Als Material für die Beschichtung der Innenwandung 4 kommen beispielsweise aus metallorganischen Solen hergestellte Metalloxide oder Keramiken in Betracht.To improve the flow properties of the through the nozzle channel 3 to be supplied in the registered arrow direction fuel can the inner wall of the nozzle channel with a coating be provided, which is a smoothing and a seal the inner wall causes. As material for the coating the inner wall 4 come, for example, organometallic Solen produced metal oxides or ceramics in Consideration.
In Fig. 2 ist eine alternative Ausführung für eine Einspritzdüse
1 dargestellt. In den Düsenkörper 2 der Einspritzdüse sind
zwei Düsenkanäle 3 eingebracht, welche parallel verlaufen und
jeweils als keramische Hohlfaser ausgebildet sind, die in den
Düsenkörper 2 fest eingebettet sind. Die Innenwandungen 4 beider
Düsenkanäle 3 sind beschichtet. Auch im Ausführungsbeispiel
nach Fig. 2 liegen die Austrittsöffnungen der Hohlfasern und
die Stirnseite des Düsenkörpers in einer gemeinsamen Austrittsebene
5.In Fig. 2 is an alternative embodiment for an
Grundsätzlich können auch mehr als zwei Düsenkanäle in einer Einspritzdüse vorgesehen sein, wobei sowohl die Möglichkeit besteht, sämtliche Düsenkanäle als keramische Hohlfasern auszubilden, als auch die Möglichkeit gegeben ist, nur eine oder einen Teil der Düsenkanäle als keramische Hohlfasern und die übrigen Düsenkanäle aus anderen Materialien zu fertigen. Außerdem kann es zweckmäßig sein, die Düsenkanäle 3 winklig zueinander anzuordnen.Basically, 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.
Claims (10)
dadurch gekennzeichnet, dass der Düsenkanal (3) als keramische Hohlfaser ausgebildet ist.Injection nozzle for injecting a fluid, comprising a nozzle body (2) and at least one nozzle channel (3) embedded in the nozzle body (2),
characterized in that the nozzle channel (3) is designed as a ceramic hollow fiber.
dadurch gekennzeichnet, dass die Innenwandung (4) der keramischen Hohlfaser zur Reduzierung des Strömungswiderstandes eine Beschichtung aufweist.Injection nozzle according to claim 1,
characterized in that the inner wall (4) of the ceramic hollow fiber for reducing the flow resistance has a coating.
dadurch gekennzeichnet, dass die Beschichtung aus über metallorganische Sole hergestellte Metalloxide oder Keramiken besteht.Injection nozzle according to claim 2,
characterized in that the coating consists of metal oxides or ceramics prepared via organometallic sols.
dadurch gekennzeichnet, dass die Austrittsöffnung der Hohlfaser mit der Stirnseite des Düsenkörpers (2) in einer Austrittsebene (5) liegt.Injection nozzle according to one of claims 1 to 3,
characterized in that the outlet opening of the hollow fiber with the end face of the nozzle body (2) in an exit plane (5).
dadurch gekennzeichnet, dass eine Mehrzahl von Hohlfasern als Düsenkanäle (3) in den Düsenkörper (2) eingebettet sind.Injection nozzle according to one of claims 1 to 4,
characterized in that a plurality of hollow fibers are embedded as nozzle channels (3) in the nozzle body (2).
dadurch gekennzeichnet, dass der Außendurchmesser der Hohlfaser größer als 20 µm und nicht größer als 2 mm ist.Injection nozzle according to one of claims 1 to 5,
characterized in that the outer diameter of the hollow fiber is greater than 20 microns and not greater than 2 mm.
dadurch gekennzeichnet, dass der Innendurchmesser der Hohlfaser zwischen 20 µm und 1 mm liegt.Injection nozzle according to one of claims 1 to 6,
characterized in that the inner diameter of the hollow fiber is between 20 microns and 1 mm.
dadurch gekennzeichnet, dass der Düsenkörper (2) aus Metall besteht.Injection nozzle according to one of claims 1 to 7,
characterized in that the nozzle body (2) consists of metal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10361576 | 2003-12-23 | ||
| DE10361576A DE10361576A1 (en) | 2003-12-23 | 2003-12-23 | Injection nozzle for injecting a fluid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1548273A1 true EP1548273A1 (en) | 2005-06-29 |
| EP1548273B1 EP1548273B1 (en) | 2006-08-30 |
Family
ID=34530414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04106720A Active EP1548273B1 (en) | 2003-12-23 | 2004-12-20 | Injection nozzle for injecting a fluid |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1548273B1 (en) |
| AT (1) | ATE338208T1 (en) |
| DE (2) | DE10361576A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1845255A1 (en) * | 2006-04-13 | 2007-10-17 | Robert Bosch Gmbh | Fuel injector with high durability and resistance to wear |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0481568A (en) * | 1990-07-24 | 1992-03-16 | Isuzu Motors Ltd | Manufacture of fuel injection nozzle |
| JPH04103871A (en) * | 1990-08-22 | 1992-04-06 | Isuzu Motors Ltd | Fuel injection nozzle and its manufacture |
| EP1138936A2 (en) * | 2000-03-30 | 2001-10-04 | Siemens Automotive Corporation | Deposit resistant material for a fuel injection seat and method of manufacturing |
| DE10044764A1 (en) * | 2000-09-11 | 2002-04-04 | Ewm Hightec Welding Gmbh | Arrangement for plasma welding and/or plasma cutting has nozzle opening with high temperature resistant surface with electrical conducting properties at least near plasma jet outlet |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3602921A1 (en) * | 1986-01-31 | 1987-08-06 | Rolf Daume | Injection nozzle |
| CN1283314A (en) * | 1997-12-28 | 2001-02-07 | K·瑞纳贝克 | Fuel cell unit |
| DE10207197A1 (en) * | 2002-02-21 | 2003-09-04 | Alstom Switzerland Ltd | High pressure injection nozzle for especially gas turbine has nozzle insert with outlet orifice in communication with nozzle orifice, and consisting of ceramic or precious stone material |
-
2003
- 2003-12-23 DE DE10361576A patent/DE10361576A1/en not_active Withdrawn
-
2004
- 2004-12-20 EP EP04106720A patent/EP1548273B1/en active Active
- 2004-12-20 AT AT04106720T patent/ATE338208T1/en not_active IP Right Cessation
- 2004-12-20 DE DE502004001333T patent/DE502004001333D1/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0481568A (en) * | 1990-07-24 | 1992-03-16 | Isuzu Motors Ltd | Manufacture of fuel injection nozzle |
| JPH04103871A (en) * | 1990-08-22 | 1992-04-06 | Isuzu Motors Ltd | Fuel injection nozzle and its manufacture |
| EP1138936A2 (en) * | 2000-03-30 | 2001-10-04 | Siemens Automotive Corporation | Deposit resistant material for a fuel injection seat and method of manufacturing |
| DE10044764A1 (en) * | 2000-09-11 | 2002-04-04 | Ewm Hightec Welding Gmbh | Arrangement for plasma welding and/or plasma cutting has nozzle opening with high temperature resistant surface with electrical conducting properties at least near plasma jet outlet |
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 (en) * | 2006-04-13 | 2007-10-17 | Robert Bosch Gmbh | Fuel injector with high durability and resistance to wear |
Also Published As
| Publication number | Publication date |
|---|---|
| DE502004001333D1 (en) | 2006-10-12 |
| ATE338208T1 (en) | 2006-09-15 |
| EP1548273B1 (en) | 2006-08-30 |
| DE10361576A1 (en) | 2005-07-28 |
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