DE102006044441A1 - Fuel injecting valve for fuel injection system of internal-combustion engine, has narrow side surfaces of injecting opening tapering in flow direction convergent to each other such that opening tapers in flow direction - Google Patents
Fuel injecting valve for fuel injection system of internal-combustion engine, has narrow side surfaces of injecting opening tapering in flow direction convergent to each other such that opening tapers in flow direction Download PDFInfo
- Publication number
- DE102006044441A1 DE102006044441A1 DE200610044441 DE102006044441A DE102006044441A1 DE 102006044441 A1 DE102006044441 A1 DE 102006044441A1 DE 200610044441 DE200610044441 DE 200610044441 DE 102006044441 A DE102006044441 A DE 102006044441A DE 102006044441 A1 DE102006044441 A1 DE 102006044441A1
- Authority
- DE
- Germany
- Prior art keywords
- fuel injection
- opening
- valve
- valve according
- jet nozzle
- 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.)
- Withdrawn
Links
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
- F02M61/1853—Orifice plates
-
- 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
- F02M61/184—Discharge orifices having non circular sections
Abstract
Description
Stand der TechnikState of the art
Die Erfindung geht aus von einem Brennstoffeinspritzventil nach der Gattung des Hauptanspruchs.The The invention is based on a fuel injection valve after Genus of the main claim.
Aus
der
Aus
der
Bekannt
ist zudem noch ein Brennstoffeinspritzventil zum direkten Einspritzen
von Brennstoff in einen Brennraum einer Brennkraftmaschine aus der
Vorteile der ErfindungAdvantages of the invention
Das erfindungsgemäße Brennstoffeinspritzventil mit den kennzeichnenden Merkmalen des Anspruchs 1 hat den Vorteil, dass auf einfache Art und Weise eine gleichmäßige Feinstzerstäubung des Brennstoffs erreicht wird, wobei eine besonders hohe Aufbereitungsqualität und Zerstäubungsgüte mit sehr kleinen Fluidtröpfchen erzielt wird. In vorteilhafter Weise besitzt die Fächerstrahl-Düse am stromabwärtigen Ende des Brennstoffeinspritzventils wenigstens eine schlitzförmige Abspritzöffnung, die sich dadurch auszeichnet, dass ihre schmalen Seitenflächen in Strömungsrichtung konvergent aufeinander zulaufen, so dass sich die Abspritzöffnung in Strömungsrichtung durch Abnahme der Schlitzlänge verjüngt. Mit einer solchen Ausführung sind lamellenartige Fächerstrahlen abspritzbar, die sich weitgehend senkrecht zur Längserstreckung der Abspritzöffnungen erstrecken. Auf diese Weise sind Brennstoffsprays mit extrem kleinen Brennstofftröpfchen abspritzbar, die je nach Auslegung der schlitzförmigen Abspritzöffnungen Sauter Mean Diameter (SMD) von ca. 20 bis 60 μm besitzen. Insofern kann sehr wirkungsvoll die HC-Emission der Brennkraftmaschine deutlich reduziert werden.The Fuel injection valve according to the invention with the characterizing features of claim 1 has the advantage that in a simple way a uniform atomizing the fuel is reached, with a particularly high quality of preparation and atomization quality with very small fluid droplets is achieved. Advantageously, the fan jet nozzle is at the downstream end the fuel injection valve has at least one slot-shaped injection opening, which is characterized in that its narrow side surfaces in the flow direction converge convergent to each other, so that the injection opening in flow direction by decreasing the slot length rejuvenated. With such an execution are lamellar fan beams can be sprayed, which extend largely perpendicular to the longitudinal extension of the spray-orifices. In this way, fuel sprays with extremely small fuel droplets can be sprayed off depending on the design of the slot-shaped spray openings Sauter Mean Diameter (SMD) of about 20 to 60 microns own. In that respect, very much effective the HC emission the internal combustion engine can be significantly reduced.
Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Anspruch 1 angegebenen Brennstoffeinspritzventils möglich.By in the subclaims listed activities are advantageous developments and improvements of the claim 1 specified fuel injector possible.
In idealer Weise besitzt die Fächerstrahl-Düse am stromabwärtigen Ende des Brennstoffeinspritzventils eine Vielzahl von sehr kleinen Abspritzöffnungen, die schlitzförmig gezielt so ausgeführt sind, dass aus der Multi-Fächerstrahl-Düse eine Vielzahl von räumlich versetzten Fächerstrahlen austreten, die Lamellenpakete bilden, wobei sich die einzelnen Flüssigkeitslamellen räumlich versetzt zueinander bewegen.In ideally, the fan jet nozzle is at the downstream end the fuel injector a variety of very small spray orifices, the slit-shaped are specifically designed so that from the multi-fan jet nozzle a Variety of spatial staggered fan beams emerge, the lamella packages form, with each liquid lamellae spatial offset move each other.
Die Abspritzöffnungen können mit sehr filigranen Öffnungsstrukturen, wie z.B. Schlitzbreiten von ca. 30 bis 120 μm und Schlitzlängen von bis zu 1 mm hergestellt werden.The spray openings can with very delicate opening structures, such as. Slot widths of about 30 to 120 microns and slot lengths of be made up to 1 mm.
Zeichnungdrawing
Ausführungsbeispiele der Erfindung sind in der Zeichnung vereinfacht dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigenembodiments The invention are shown in simplified form in the drawing and explained in more detail in the following description. Show it
Beschreibung der AusführungsbeispieleDescription of the embodiments
In
der
Die
Betätigung
des Brennstoffeinspritzventils erfolgt in bekannter Weise, beispielsweise
elektromagnetisch. Eine Betätigung
des Brennstoffeinspritzventils mit einem piezoelektrischen oder
magnetostriktiven Aktor ist jedoch ebenso denkbar. Zur axialen Bewegung
der Ventilnadel
In
dem stromabwärts
liegenden Ende des Ventilsitzträgers
Die
Einschubtiefe des Ventilsitzkörpers
In
dem Ventilsitzkörper
Durch
den konisch sich verjüngenden
Spalt der Abspritzöffnung
Im
gezeigten Ausführungsbeispiel
ist die Multi-Fächerstrahl-Düse
Claims (12)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610044441 DE102006044441A1 (en) | 2006-09-21 | 2006-09-21 | Fuel injecting valve for fuel injection system of internal-combustion engine, has narrow side surfaces of injecting opening tapering in flow direction convergent to each other such that opening tapers in flow direction |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610044441 DE102006044441A1 (en) | 2006-09-21 | 2006-09-21 | Fuel injecting valve for fuel injection system of internal-combustion engine, has narrow side surfaces of injecting opening tapering in flow direction convergent to each other such that opening tapers in flow direction |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102006044441A1 true DE102006044441A1 (en) | 2008-03-27 |
Family
ID=39105013
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200610044441 Withdrawn DE102006044441A1 (en) | 2006-09-21 | 2006-09-21 | Fuel injecting valve for fuel injection system of internal-combustion engine, has narrow side surfaces of injecting opening tapering in flow direction convergent to each other such that opening tapers in flow direction |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102006044441A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008051365A1 (en) * | 2008-10-15 | 2010-04-29 | L'orange Gmbh | Fuel-injection valve for internal combustion engine, has nozzle body, in which blind hole is formed, where cross section of injection channel is narrowed in circumferential direction of blind hole |
DE102011007885A1 (en) * | 2011-04-21 | 2012-10-25 | Continental Automotive Gmbh | Nozzle assembly for an injection valve and injection valve |
-
2006
- 2006-09-21 DE DE200610044441 patent/DE102006044441A1/en not_active Withdrawn
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008051365A1 (en) * | 2008-10-15 | 2010-04-29 | L'orange Gmbh | Fuel-injection valve for internal combustion engine, has nozzle body, in which blind hole is formed, where cross section of injection channel is narrowed in circumferential direction of blind hole |
DE102008051365B4 (en) * | 2008-10-15 | 2010-07-01 | L'orange Gmbh | Fuel injection valve for internal combustion engines |
DE102011007885A1 (en) * | 2011-04-21 | 2012-10-25 | Continental Automotive Gmbh | Nozzle assembly for an injection valve and injection valve |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20110401 |