DE102006041472A1 - Fuel injecting valve for fuel injection systems of internal-combustion engines, has discharge ports consist of two sections, where lower downstream section has larger opening width than opening width of upper upstream section - Google Patents
Fuel injecting valve for fuel injection systems of internal-combustion engines, has discharge ports consist of two sections, where lower downstream section has larger opening width than opening width of upper upstream section Download PDFInfo
- Publication number
- DE102006041472A1 DE102006041472A1 DE200610041472 DE102006041472A DE102006041472A1 DE 102006041472 A1 DE102006041472 A1 DE 102006041472A1 DE 200610041472 DE200610041472 DE 200610041472 DE 102006041472 A DE102006041472 A DE 102006041472A DE 102006041472 A1 DE102006041472 A1 DE 102006041472A1
- Authority
- DE
- Germany
- Prior art keywords
- section
- fuel injection
- openings
- injection
- fuel
- 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- Withdrawn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
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.
Bekannt
ist bereits aus der
Aus
der
Vorteile der ErfindungAdvantages of the invention
Das erfindungsgemäße Brennstoffeinspritzventil mit den kennzeichnenden Merkmalen des Hauptanspruchs hat den Vorteil, dass auf einfache Art und Weise eine Feinstzerstäubung des Brennstoffs erreicht wird, wobei eine besonders hohe Aufbereitungsqualität und Zerstäubungsgüte mit sehr kleinen Brennstofftröpfchen erzielt wird. Dies wird in vorteilhafter Weise dadurch erreicht, dass stromabwärts eines Ventilsitzes Abspritzöffnungen vorgesehen sind, die horizontal angeströmt werden und so konturiert sind, dass eine lamellenartige Aufspreizung des abgespritzten Brennstoffs erreichbar ist. In idealer Weise besitzt das Brennstoffeinspritzventil an seinem stromabwärtigen Ende eine Lochscheibe mit einer Vielzahl von erfindungsgemäß ausgestalteten Abspritzöffnungen, die so zusammengefasst sein können, dass Lamellenpakete abgespritzt werden. Auf diese Weise sind Brennstoffsprays mit extrem kleinen Brennstofftröpfchen mit einem Sauter Mean Diameter (SMD) von ca. 20 μm abspritzbar und kann sehr wirkungsvoll die HC-Emission der Brennkraftmaschine deutlich reduziert werden.The Fuel injection valve according to the invention with the characterizing features of the main claim has the advantage that in a simple way achieves a fine atomization of the fuel is, with a particularly high quality of preparation and atomization quality with very small fuel droplets is achieved. This is achieved in an advantageous manner by that downstream a valve seat spray openings are provided, which are flowed horizontally and contoured so are that a lamellar spread of the sprayed fuel is reachable. Ideally, the fuel injector has at its downstream End of a perforated disc with a plurality of inventively designed spray-orifices, that can be summarized that lamella packages are hosed down. In this way are fuel sprays with extremely small fuel droplets can be sprayed off with a Sauter Mean Diameter (SMD) of approx. 20 μm and can be very Effectively significantly reduces the HC emission of the internal combustion engine become.
Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Hauptanspruch angegebenen Brennstoffeinspritzventils möglich.By in the subclaims listed activities are advantageous developments and improvements of the main claim specified fuel injector possible.
In vorteilhafter Weise ist im Ventilsitzkörper stromaufwärts der Abspritzöffnungen eine Zuströmöffnung mit einem Anströmhohlraum vorgesehen, die größer ist als eine Austrittsöffnung stromabwärts des Ventilsitzes. Auf diese Weise übernimmt der Ventilsitzkörper bereits die Funktion einer Strömungsbeeinflussung in der Lochscheibe.In Advantageously, in the valve seat body upstream of the spray openings an inflow opening with a Anströmhohlraum provided, which is larger as an outlet downstream of the valve seat. In this way, the valve seat body already takes over the function of a flow control in the perforated disc.
In besonders vorteilhafter Weise wird durch die Ausbildung der Zuströmöffnung ein S-Schlag in der Strömung zur Zerstäubungsverbesserung des Brennstoffs erreicht, da der Ventilsitzkörper mit der oberen Begrenzung der Zuströmöffnung die Abspritzöffnungen der Lochscheibe überdeckt. Die Abspritzöffnungen sind so ausgebildet, dass sie aus zwei Abschnitten bestehen, die asymmetrisch zueinander verlaufen, wobei der untere stromabwärtige Abschnitt eine größere Öffnungsweite hat als die Öffnungsweite des oberen stromaufwärtigen Abschnitts und ein Unterversatz des stromabwärtigen Abschnitts gegenüber dem stromaufwärtigen Abschnitt dabei auf der Anströmseite, also z.B. auf der radial inneren, zum Zentrum der Lochscheibe zeigenden Seite größer ist als auf der gegenüberliegenden, z.B. radial äußeren Seite der Abspritzöffnungen. Von der Anströmseite her steht im stromabwärtigen Teil der Abspritzöffnungen dadurch eine starke Luftphase bzw. -strömung zur Verfügung, die das Aufspreizen des Fluids unterstützt, da sie den Brennstoff an die gegenüberliegende Prallseite der Abspritzöffnungen drückt und die bereits vorhandene Ablösung der Strömung an der Anströmseite verstärkt.In Particularly advantageous manner is by the formation of the inflow opening S-blow in the flow for atomization improvement reaches the fuel, since the valve seat body with the upper limit the inflow opening the spray openings the perforated disc is covered. The injection openings are designed so that they consist of two sections, the run asymmetrically with each other, the lower downstream portion a larger opening width has as the opening width the upper upstream Section and a sub-offset of the downstream portion relative to the upstream Section on the upstream side, ie e.g. on the radially inner, pointing to the center of the perforated disc Page is larger than on the opposite, e.g. radially outer side the injection openings. From the upstream side her is in the downstream Part of the injection openings thereby a strong air phase or flow available, the supporting the spreading of the fluid, as they are the fuel to the opposite Impact side of the spray openings presses and the already existing replacement the flow on the upstream side strengthened.
Mittels galvanischer Metallabscheidung lassen sich in vorteilhafter Weise Lochscheiben in reproduzierbarer Weise äußerst präzise und kostengünstig in sehr großen Stückzahlen gleichzeitig herstellen. Außerdem erlaubt diese Herstellungsweise eine große Gestaltungsfreiheit bei der Konturierung der Abspritzöffnungen in der Lochscheibe.By means of metal plating can be perforated discs in a reproducible manner extremely precise and kostengüns advantageously produce in large quantities at the same time. In addition, this method of manufacture allows a great deal of freedom in the contouring of the ejection openings in the perforated disc.
Zeichnungdrawing
Ausführungsbeispiele
der Erfindung sind in der Zeichnung vereinfacht dargestellt und
in der nachfolgenden Beschreibung näher erläutert. Es zeigen
Beschreibung der AusführungsbeispieleDescription of the embodiments
In
der
Die
Betätigung
des Einspritzventils erfolgt in bekannter Weise, beispielsweise
elektromagnetisch. Zur axialen Bewegung der Ventilnadel
In
dem stromabwärts
liegenden Ende des Ventilsitzträgers
Die
Zuströmöffnung
Die
Einschubtiefe des Ventilsitzkörpers
Die
Abspritzöffnungen
Durch
den so genannten S-Schlag vor und innerhalb der Lochscheibe
Anhand
von
In
den hier vorgestellten Ausführungsbeispielen
sind die Abspritzöffnungen
In
den
Die
Lochscheibe
Claims (11)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610041472 DE102006041472A1 (en) | 2006-09-05 | 2006-09-05 | Fuel injecting valve for fuel injection systems of internal-combustion engines, has discharge ports consist of two sections, where lower downstream section has larger opening width than opening width of upper upstream section |
JP2007229094A JP5260004B2 (en) | 2006-09-05 | 2007-09-04 | Fuel injection valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610041472 DE102006041472A1 (en) | 2006-09-05 | 2006-09-05 | Fuel injecting valve for fuel injection systems of internal-combustion engines, has discharge ports consist of two sections, where lower downstream section has larger opening width than opening width of upper upstream section |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102006041472A1 true DE102006041472A1 (en) | 2008-03-06 |
Family
ID=38989686
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200610041472 Withdrawn DE102006041472A1 (en) | 2006-09-05 | 2006-09-05 | Fuel injecting valve for fuel injection systems of internal-combustion engines, has discharge ports consist of two sections, where lower downstream section has larger opening width than opening width of upper upstream section |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP5260004B2 (en) |
DE (1) | DE102006041472A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011014607A1 (en) * | 2009-07-30 | 2011-02-03 | 3M Innovative Properties Company | Nozzle and method of making same |
FR2968720A1 (en) * | 2010-12-09 | 2012-06-15 | Continental Automotive France | Injector for multipoint injection of fuel in cylinder head of internal combustion engine, has cylindrical shouldered orifices opened in offset manner with respect to longitudinal axis in cylindrical injection cavity to cause turbulent flow |
CN105121834A (en) * | 2013-04-16 | 2015-12-02 | 三菱电机株式会社 | Fuel injection valve |
CN109715934A (en) * | 2016-09-28 | 2019-05-03 | 日立汽车系统株式会社 | Fuel injection valve |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5605325B2 (en) * | 2011-07-19 | 2014-10-15 | トヨタ自動車株式会社 | Fuel injection valve |
JP5959892B2 (en) | 2012-03-26 | 2016-08-02 | 日立オートモティブシステムズ株式会社 | Spark ignition type fuel injection valve |
JP2014001660A (en) * | 2012-06-18 | 2014-01-09 | Bosch Corp | Fuel injection valve of internal combustion engine |
JP6416564B2 (en) * | 2014-09-18 | 2018-10-31 | 日立オートモティブシステムズ株式会社 | Fuel injection valve |
JP6692220B2 (en) * | 2016-06-17 | 2020-05-13 | 日立オートモティブシステムズ株式会社 | Fuel injection valve |
JP6339628B2 (en) * | 2016-06-22 | 2018-06-06 | 日立オートモティブシステムズ株式会社 | Fuel injection valve |
JP6703474B2 (en) * | 2016-12-19 | 2020-06-03 | 日立オートモティブシステムズ株式会社 | Fuel injection valve |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02233863A (en) * | 1989-03-07 | 1990-09-17 | Nippon Injiekuta Kk | Electromagnetic fuel injection valve |
DE19703200A1 (en) * | 1997-01-30 | 1998-08-06 | Bosch Gmbh Robert | Fuel injector |
JPH11117830A (en) * | 1997-10-20 | 1999-04-27 | Hitachi Ltd | Injector |
DE19937961A1 (en) * | 1999-08-11 | 2001-02-15 | Bosch Gmbh Robert | Fuel injection valve and method for producing outlet openings on valves |
-
2006
- 2006-09-05 DE DE200610041472 patent/DE102006041472A1/en not_active Withdrawn
-
2007
- 2007-09-04 JP JP2007229094A patent/JP5260004B2/en not_active Expired - Fee Related
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10495043B2 (en) | 2009-07-30 | 2019-12-03 | 3M Innovative Properties Company | Fuel injector nozzle |
CN102575630A (en) * | 2009-07-30 | 2012-07-11 | 3M创新有限公司 | Nozzle and method of making same |
EP2657510A1 (en) * | 2009-07-30 | 2013-10-30 | 3M Innovative Properties Company | Nozzle and method of making same |
CN103912428A (en) * | 2009-07-30 | 2014-07-09 | 3M创新有限公司 | Nozzle And Method Of Making Same |
CN102575630B (en) * | 2009-07-30 | 2014-07-23 | 3M创新有限公司 | Nozzle and method of making same |
WO2011014607A1 (en) * | 2009-07-30 | 2011-02-03 | 3M Innovative Properties Company | Nozzle and method of making same |
EP2728162A3 (en) * | 2009-07-30 | 2016-01-27 | 3M Innovative Properties Company | Nozzle and method of making same |
US9333598B2 (en) | 2009-07-30 | 2016-05-10 | 3M Innovative Properties Company | Method of making a nozzle |
US10539106B2 (en) | 2009-07-30 | 2020-01-21 | 3M Innovative Properties Company | Method of making a fuel injector nozzle |
FR2968720A1 (en) * | 2010-12-09 | 2012-06-15 | Continental Automotive France | Injector for multipoint injection of fuel in cylinder head of internal combustion engine, has cylindrical shouldered orifices opened in offset manner with respect to longitudinal axis in cylindrical injection cavity to cause turbulent flow |
CN105121834A (en) * | 2013-04-16 | 2015-12-02 | 三菱电机株式会社 | Fuel injection valve |
CN109715934A (en) * | 2016-09-28 | 2019-05-03 | 日立汽车系统株式会社 | Fuel injection valve |
CN109715934B (en) * | 2016-09-28 | 2021-02-26 | 日立汽车系统株式会社 | Fuel injection valve |
Also Published As
Publication number | Publication date |
---|---|
JP5260004B2 (en) | 2013-08-14 |
JP2008064094A (en) | 2008-03-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R012 | Request for examination validly filed |
Effective date: 20130527 |
|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |