EP2925998B1 - Injection valve - Google Patents
Injection valve Download PDFInfo
- Publication number
- EP2925998B1 EP2925998B1 EP13773678.1A EP13773678A EP2925998B1 EP 2925998 B1 EP2925998 B1 EP 2925998B1 EP 13773678 A EP13773678 A EP 13773678A EP 2925998 B1 EP2925998 B1 EP 2925998B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ejection opening
- valve
- opening
- injection valve
- ejection
- 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.)
- Active
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
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
-
- 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
- F02M61/1833—Discharge orifices having changing cross sections, e.g. being divergent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/28—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with integral means for shielding the discharged liquid or other fluent material, e.g. to limit area of spray; with integral means for catching drips or collecting surplus liquid or other fluent material
-
- 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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
-
- 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
- F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
-
- 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
- F02M61/18—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
- F02M61/1826—Discharge orifices having different sizes
-
- 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
Description
Die Erfindung geht aus von einem Einspritzventil nach der Gattung des Hauptanspruchs.The invention relates to an injection valve according to the preamble of the main claim.
Aus der
Aus der
Ein Brennstoffeinspritzventil mit zurückerersetztem Bodenbereich bei der Abspritzöffnung ist aus
Das erfindungsgemäße Einspritzventil mit den Merkmalen des Hauptanspruchs hat den Vorteil, dass auf kostengünstige Art pro Abspritzöffnung ein Spray erzeugt werden kann, das bezüglich seines Lamellenzerfalls eine sehr gute Zerstäubungsqualität liefert und insbesondere ein definierter Abriss der Strömung noch innerhalb der Abspritzöffnung erreicht wird, der in vorteilhafter Weise die Verkokungsneigung in der Abspritzöffnung wirkungsvoll reduziert.The injection valve according to the invention with the features of the main claim has the advantage that a spray can be generated in a cost effective manner per spray orifice, which provides a very good atomization quality with respect to its lamellar decay and in particular a defined demolition of the flow is still achieved within the spray orifice, in an advantageous Way the coking tendency in the injection opening effectively reduced.
Die abzuspritzende Flüssigkeit wird durch die im Übergang der wenigstens zwei Öffnungsabschnitte der Abspritzöffnung ausgebildete Abrisskante definierter und wirkungsvoller abgerissen als dies bei bekannten gestuften Abspritzöffnungen der Fall ist.The liquid to be sprayed off is defined and more effectively torn off by the tear-off edge formed in the transition of the at least two opening sections of the spray-discharge opening than is the case with known stepped spray-discharge openings.
Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Hauptanspruch angegebenen Einspritzventils möglich.The measures listed in the dependent claims advantageous refinements and improvements of the main claim injector are possible.
Der von der Abrisskante ausgehend zurückversetzt nach radial außen verlaufenden Bodenbereich des zweiten Abspritzöffnungsabschnitts wird dachförmig ausgebildet.The base region of the second spray discharge opening section, which is set back from the spoiler edge in a radially outward direction, is roof-shaped.
Von Vorteil ist es, die Kontur der Abspritzöffnung mittels U KP-Laserbohren herzustellen. Mit diesem Verfahren lassen sich kostengünstig und mit hoher Präzision derartige Konturen exakt einformen.It is advantageous to produce the contour of the injection opening by means of U KP laser drilling. With this method, such contours can be precisely formed inexpensively and with high precision.
Ausführungsbeispiele der Erfindung ist in der Zeichnung vereinfacht dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen
-
Figur 1 einen axialen Schnitt durch ein Brennstoffeinspritzventil gemäß dem Stand der Technik, -
Figur 2 einen vergrößerten Ausschnitt aus dem inFigur 1 dargestellten Brennstoffeinspritzventil im Bereich II inFigur 1 mit einer ersten nicht erfindungsgemäß ausgestalteten Abspritzöffnung eines Einspritzventils, -
eine zweite Ausführung einer nicht erfindungsgemäß ausgestalteten Abspritzöffnung undFigur 3 -
eine Ausführung einer erfindungsgemäß ausgestalteten Abspritzöffnung.Figur 4
-
FIG. 1 an axial section through a fuel injection valve according to the prior art, -
FIG. 2 an enlarged section of the inFIG. 1 shown fuel injection valve in the area II inFIG. 1 with a first injection opening, not designed according to the invention, of an injection valve, -
FIG. 3 a second embodiment of a not designed according to the invention injection port and -
FIG. 4 an embodiment of an inventively designed spray orifice.
Zum besseren Verständnis der Erfindung soll zunächst anhand von
Das in
Das Brennstoffeinspritzventil 1 besteht aus einem Düsenkörper 2, in welchem eine Ventilnadel 3 angeordnet ist. Die Ventilnadel 3 steht mit einem Ventilschließkörper 4 in Wirkverbindung, der mit einer auf einem Ventilsitzkörper 5 angeordneten Ventilsitzfläche 6 zu einem Dichtsitz zusammenwirkt. Bei dem Brennstoffeinspritzventil 1 handelt es sich im Ausführungsbeispiel um ein nach innen öffnendes Brennstoffeinspritzventil 1, welches über wenigstens eine Abspritzöffnung 7 verfügt. Das Brennstoffeinspritzventil 1 ist jedoch beispielsweise als Mehrloch-Einspritzventil ausgeführt und hat deshalb zwischen zwei und zwanzig Abspritzöffnungen 7. Der Düsenkörper 2 ist durch eine Dichtung 8 gegen einen Außenpol 9 einer Magnetspule 10 abgedichtet. Die Magnetspule 10 ist in einem Spulengehäuse 11 gekapselt und auf einen Spulenträger 12 gewickelt, welcher an einem Innenpol 13 der Magnetspule 10 anliegt. Der Innenpol 13 und der Außenpol 9 sind durch eine Verengung 26 voneinander getrennt und miteinander durch ein nicht ferromagnetisches Verbindungsbauteil 29 verbunden. Die Magnetspule 10 wird über eine Leitung 19 von einem über einen elektrischen Steckkontakt 17 zuführbaren elektrischen Strom erregt. Der Steckkontakt 17 ist von einer Kunststoffummantelung 18 umgeben, die am Innenpol 13 angespritzt sein kann.The fuel injection valve 1 consists of a nozzle body 2, in which a
Anstelle eines elektromagnetischen Aktuators kann auch ein piezoelektrischer, magnetostriktiver oder sonstiger Antrieb zur Betätigung des Ventilschließkörpers 4 zum Einsatz kommen.Instead of an electromagnetic actuator may also be a piezoelectric, magnetostrictive or other drive for actuating the
Die Ventilnadel 3 ist in einer Ventilnadelführung 14 geführt, welche scheibenförmig ausgeführt ist. Zur Hubeinstellung dient eine zugepaarte Einstellscheibe 15. Stromaufwärts der Einstellscheibe 15 befindet sich ein Anker 20. Dieser steht über einen ersten Flansch 21 kraftschlüssig mit der Ventilnadel 3 in Verbindung, welche durch eine Schweißnaht 22 mit dem ersten Flansch 21 verbunden ist. Auf dem ersten Flansch 21 stützt sich eine Rückstellfeder 23 ab, welche in der vorliegenden Bauform des Brennstoffeinspritzventils 1 durch eine Einstellhülse 24 auf Vorspannung gebracht wird.The
In der oberen Ventilnadelführung 14, im Anker 20 und an einem unteren Führungselement 36 verlaufen Brennstoffkanäle 30, 31 und 32. Der Brennstoff wird über eine zentrale Brennstoffzufuhr 16 zugeführt und durch ein Filterelement 25 gefiltert. Das Brennstoffeinspritzventil 1 ist durch eine Dichtung 28 gegen eine nicht weiter dargestellte Brennstoffverteilerleitung und durch eine weitere Dichtung 37 gegen einen nicht weiter dargestellten Zylinderkopf abgedichtet.
An der abspritzseitigen Seite des Ankers 20 ist ein ringförmiges Dämpfungselement 33, welches aus einem Elastomerwerkstoff besteht, angeordnet. Es liegt auf einem zweiten Flansch 34 auf, welcher über eine Schweißnaht 35 kraftschlüssig mit der Ventilnadel 3 verbunden ist.On the discharge side of the
Zwischen dem ersten Flansch 21 und dem Anker 20 ist eine Vorhubfeder 38 angeordnet, welche den Anker 20 im Ruhezustand des Brennstoffeinspritzventils 1 in Anlage an dem zweiten Flansch 34 hält. Die Federkonstante der Vorhubfeder 38 ist dabei wesentlich kleiner als die Federkonstante der Rückstellfeder 23.Between the
Im Ruhezustand des Brennstoffeinspritzventils 1 wird der Anker 20 von der Rückstellfeder 23 und der Vorhubfeder 38 entgegen seiner Hubrichtung so beaufschlagt, dass der Ventilschließkörper 4 an der Ventilsitzfläche 6 in dichtender Anlage gehalten wird. Bei Erregung der Magnetspule 10 baut diese ein Magnetfeld auf, welches den Anker 20 zunächst entgegen der Federkraft der Vorhubfeder 38 in Hubrichtung bewegt, wobei ein Ankerfreiweg durch den Abstand zwischen dem ersten Flansch 21 und dem Anker 20 vorgegeben ist. Nach Durchlaufen des Ankerfreiwegs nimmt der Anker 20 den ersten Flansch 21, welcher mit der Ventilnadel 3 verschweißt ist, entgegen der Federkraft der Rückstellfeder 23 ebenfalls in Hubrichtung mit. Der Anker 20 durchläuft dabei einen Gesamthub, der der Höhe des Arbeitsspaltes 27 zwischen dem Anker 20 und dem Innenpol 13 entspricht. Der mit der Ventilnadel 3 in Verbindung stehende Ventilschließkörper 4 hebt von der Ventilsitzfläche 6 ab, und der über die Brennstoffkanäle 30 bis 32 geführte Brennstoff wird durch die Abspritzöffnung 7 abgespritzt.In the idle state of the fuel injection valve 1, the
Wird der Spulenstrom abgeschaltet, fällt der Anker 20 nach genügendem Abbau des Magnetfeldes durch den Druck der Rückstellfeder 23 vom Innenpol 13 ab, wodurch sich der mit der Ventilnadel 3 in Verbindung stehende erste Flansch 21 entgegen der Hubrichtung bewegt. Die Ventilnadel 3 wird dadurch in die gleiche Richtung bewegt, wodurch der Ventilschließkörper 4 auf der Ventilsitzfläche 6 aufsetzt und das Brennstoffeinspritzventil 1 geschlossen wird. Die Vorhubfeder 38 beaufschlagt den Anker 20 dann wiederum so, dass dieser nicht von dem zweiten Flansch 34 zurückprellt, sondern ohne Anschlagspreller in den Ruhezustand zurückkehrt.If the coil current is turned off, the
Bei Brennstoffeinspritzventilen 1 zum direkten Einspritzen von Brennstoff in den Brennraum einer Brennkraftmaschine besteht ein erhebliches Risiko der Belagbildung an den stromabwärtigen Bauteilen, wie Spritzlochscheiben und Ventilsitzkörpern. Insbesondere sind die Abspritzöffnungen 7 anfällig gegen eine Verkokung des freien Querschnitts, so dass es in nachteiliger Weise zu Mindermengen gegenüber den gewünschten Abspritzmengen kommen kann. Entsprechend wünschenswert ist es, den Temperaturhaushalt im Bereich des stromabwärtigen Endes des Brennstoffeinspritzventils 1 rund um den Ventilsitzkörper 5 gezielt einzustellen. Außerdem soll bestmöglich sichergestellt werden, dass über die Abspritzöffnungen 7 über die gesamte Lebensdauer des Brennstoffeinspritzventils 1 eine konstante Durchflussmenge abspritzbar ist. Es wurde herausgefunden, dass insbesondere bei gestuften Abspritzöffnungen 7, die in stromabwärtiger Richtung eine Öffnungsweitenvergrößerung besitzen, die Neigung zur Belagbildung, Verkokung und damit die Gefahr des Zusetzens des freien Querschnitts der Abspritzöffnungen 7 erheblich reduziert sind.In fuel injection valves 1 for injecting fuel directly into the combustion chamber of an internal combustion engine, there is a considerable risk of the formation of deposits on the downstream components, such as spray perforated disks and valve seat bodies. In particular, the
Besonders vorteilhaft ist es deshalb, die gestuften Abspritzöffnungen 7 spezifisch auszuformen. Im Übergang der wenigstens zwei Abspritzöffnungsabschnitte 7', 7" der Abspritzöffnung 7 ist eine Abrisskante 41 ausgebildet, die sich dadurch auszeichnet, dass sie von dem Material des Ventilsitzkörpers 5, des Düsenkörpers oder einer Spritzlochscheibe mit einem Winkel von < 90° in diesem Bereich umlaufend gebildet wird. Mit anderen Worten ausgedrückt heißt dies, dass der vollständige Öffnungswinkel α der Abspritzöffnung 7 an der Abrisskante 41 > 270° über die gesamte umlaufende Abrisskante 41 beträgt, wodurch ein sehr definierter und wirkungsvoller Abriss des abzuspritzenden Fluids erreicht wird. Von der Abrisskante 41 ausgehend erstreckt sich damit zwangsläufig am Boden des zweiten Abspritzöffnungsabschnittes 7" der Abspritzöffnung 7 ein ringförmig umlaufender Bodenbereich 42, der zumindest teilweise zurückversetzt hinter der Übergangsebene, in der sich die Abrisskante 41 befindet, liegt.It is therefore particularly advantageous to form the stepped
In der
In
In einer Ausführung einer Abspritzöffnung 7 in einem Ventilsitzkörper 5, die ebenfalls in einer mit
In idealer Weise werden die erfindungsgemäßen Konturen kostengünstig mittels UKP-Laserbohren (Ultrakurzpuls-Laserbohren) hergestellt.Ideally, contours according to the invention are produced inexpensively by means of UKP laser drilling (ultra-short pulse laser drilling).
Claims (5)
- Injection valve (1), in particular fuel injection valve for fuel injection systems of internal combustion engines, having an actuator (10, 13, 20) and having a movable valve component (3) and having a valve closing body (4), which together with a valve seat surface (6) forms a sealing seat, and having at least one ejection opening (7) which is formed downstream of the valve seat surface (6),
wherein the at least one ejection opening (7) comprises at least one upstream, first ejection opening section (7') with an opening width and one downstream, second ejection opening section (7") with an opening width greater than the opening width of the first ejection opening section (7'),
characterized
in that, at the transition from the first (7') to the second ejection opening section (7"), there is formed a separation edge (41) which is such that the complete opening angle (α) of the ejection opening (7) at the separation edge (41) amounts to > 270 ° over the entire encircling separation edge (41), such that an encircling base region (42) which is set back behind the transition plane in which the separation edge (41) is situated extends, proceeding from the separation edge (41), on the base of the second ejection opening section (7") of the ejection opening (7), and in that the base region (42), which runs so as to be set back radially toward the outside, extends in obliquely inclined fashion proceeding from the separation edge (41) as far as a lowest point which does not run flush with the outer wall region of the second ejection opening section (7") of the injection opening (7). - Injection valve according to Claim 1,
characterized
in that, proceeding from the lowest point, a further planar and obliquely inclined base region (42) extends in another direction of inclination as far as the outer wall region of the second ejection opening section (7") of the ejection opening (7). - Injection valve according to one of the preceding claims,
characterized
in that the contour of the ejection opening (7) is produced by USP laser drilling. - Injection valve according to one of the preceding claims,
characterized
in that the valve component that has the ejection openings (7) is the valve seat body (5). - Injection valve according to one of the preceding claims,
characterized
in that between two and twenty ejection openings (7) are provided in the corresponding valve component.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012221713.4A DE102012221713A1 (en) | 2012-11-28 | 2012-11-28 | Injector |
PCT/EP2013/070405 WO2014082774A1 (en) | 2012-11-28 | 2013-10-01 | Injection valve |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2925998A1 EP2925998A1 (en) | 2015-10-07 |
EP2925998B1 true EP2925998B1 (en) | 2016-09-14 |
Family
ID=49304926
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13773678.1A Active EP2925998B1 (en) | 2012-11-28 | 2013-10-01 | Injection valve |
Country Status (5)
Country | Link |
---|---|
US (1) | US9506437B2 (en) |
EP (1) | EP2925998B1 (en) |
KR (1) | KR102112492B1 (en) |
DE (1) | DE102012221713A1 (en) |
WO (1) | WO2014082774A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015224618A (en) * | 2014-05-29 | 2015-12-14 | トヨタ自動車株式会社 | Fuel injection valve |
JP5969564B2 (en) * | 2014-10-01 | 2016-08-17 | トヨタ自動車株式会社 | Fuel injection valve |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR415512A (en) * | 1910-05-04 | 1910-09-28 | Ets Delaunay Belleville Sa | Oil sprayer or any other liquid fuel for heating boilers |
JP2849063B2 (en) * | 1996-02-14 | 1999-01-20 | 株式会社共立合金製作所 | Fluid ejection nozzle |
DE19636396B4 (en) | 1996-09-07 | 2005-03-10 | Bosch Gmbh Robert | Fuel injector |
JP3323429B2 (en) * | 1997-11-19 | 2002-09-09 | トヨタ自動車株式会社 | Fuel injection valve for internal combustion engine |
DE19937961A1 (en) | 1999-08-11 | 2001-02-15 | Bosch Gmbh Robert | Fuel injection valve and method for producing outlet openings on valves |
DE10307931A1 (en) * | 2003-02-25 | 2004-10-28 | Robert Bosch Gmbh | Fuel injector |
DE10325289A1 (en) * | 2003-06-04 | 2005-03-17 | Robert Bosch Gmbh | Fuel injector |
JP2007177766A (en) * | 2005-12-28 | 2007-07-12 | Toyota Motor Corp | Fuel injection device |
DE102006051327A1 (en) * | 2006-10-31 | 2008-05-08 | Robert Bosch Gmbh | Fuel injector |
JP4610631B2 (en) * | 2008-05-01 | 2011-01-12 | 三菱電機株式会社 | Fuel injection valve |
-
2012
- 2012-11-28 DE DE102012221713.4A patent/DE102012221713A1/en not_active Withdrawn
-
2013
- 2013-10-01 US US14/443,239 patent/US9506437B2/en active Active
- 2013-10-01 WO PCT/EP2013/070405 patent/WO2014082774A1/en active Application Filing
- 2013-10-01 EP EP13773678.1A patent/EP2925998B1/en active Active
- 2013-10-01 KR KR1020157013916A patent/KR102112492B1/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
DE102012221713A1 (en) | 2014-05-28 |
WO2014082774A1 (en) | 2014-06-05 |
EP2925998A1 (en) | 2015-10-07 |
KR102112492B1 (en) | 2020-05-19 |
KR20150088260A (en) | 2015-07-31 |
US20150300304A1 (en) | 2015-10-22 |
US9506437B2 (en) | 2016-11-29 |
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