EP2201241B1 - Electromagnetically driven fuel injection valve - Google Patents
Electromagnetically driven fuel injection valve Download PDFInfo
- Publication number
- EP2201241B1 EP2201241B1 EP08804862A EP08804862A EP2201241B1 EP 2201241 B1 EP2201241 B1 EP 2201241B1 EP 08804862 A EP08804862 A EP 08804862A EP 08804862 A EP08804862 A EP 08804862A EP 2201241 B1 EP2201241 B1 EP 2201241B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel injection
- injection valve
- cover part
- magnetic circuit
- valve according
- 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.)
- Not-in-force
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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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0014—Valves characterised by the valve actuating means
- F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
-
- 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
- F02M51/0614—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature
Definitions
- the invention relates to a fuel injection valve according to the preamble of the main claim, such as in the EP 781 915 shown.
- a fuel injection valve for fuel injection systems of internal combustion engines comprising an excitable actuator in the form of an electromagnetic circuit having a magnetic coil, an outer magnetic circuit component and a movable armature for actuating a valve closing body, which cooperates with a provided on a valve seat body valve seat.
- an excitable actuator in the form of an electromagnetic circuit having a magnetic coil, an outer magnetic circuit component and a movable armature for actuating a valve closing body, which cooperates with a provided on a valve seat body valve seat.
- the fuel injection valve serving as a fuel inlet nozzle and inner pole tubular core, which is surrounded by the magnetic coil.
- the outer magnetic circuit component is designed pot-shaped, wherein the magnetic circuit component is installed in the valve so that it is slipped over the magnetic coil.
- the electromagnetic circuit is closed by a closure part, which is inserted from below into the magnetic circuit component.
- the movable armature is guided in the bobbin or in an inner opening of the closure part.
- the entire actuator is enclosed by a plastic extrusion, which also forms an inflow-side connecting piece.
- a fuel injection valve is also already known, is dispensed with serving as a fuel inlet nozzle and inner pole tubular core, which is surrounded by the magnetic coil.
- the fuel injection valve is characterized in that both the inflow-side connecting piece and the connecting part serving as a valve seat carrier as deep-drawn sheet metal parts are executed.
- the sheet metal parts are formed by a deformation stress exceeding the yield value of their material and connected together by means of connecting pins to form a valve housing.
- the fuel injection valve according to the invention with the characterizing features of the main claim has the advantage that in a simple and cost-effective manner, a particularly compact structure in the region of the magnetic circuit and in the areas upstream and downstream of the magnetic circuit can be realized, so that a very small, handy injection valve arises.
- a simple structural solution is provided with which a sealed dense coil space is created for coil sealing by a very simple design, serving as the inner pole of the magnetic circuit cover part is inserted into an outer magnetic circuit component. Since the components of the electromagnetic circuit as well as the connected to the magnetic circuit components connecting parts have very simple geometries and have a low-cost design, the fuel injector is particularly favorable in the production of the items and the assembly. The very short magnetic circuit works very effectively with low losses and thus has the best functional properties.
- the construction according to the invention makes it possible to produce a fuel injection valve with a total length of ⁇ 30 mm.
- the dense coil space for the magnetic coil with the outer magnetic circuit component, the cover part and a thin-walled sleeve body to limit.
- the sleeve body is a metal non-magnetic intermediate part or forms as a ferritic component, a magnetic throttle point in the magnetic circuit.
- the cover part is firmly connected to the sleeve body by means of a weld.
- Length variants of the fuel injection valve according to the invention are very easy to produce in large numbers by differently long and specifically shaped connecting pieces, valve seat carrier, valve needles and spacers.
- FIG. 1 a fuel injection valve in two variants of embodiments according to the invention in the electromagnetic circuit.
- FIG. 1 shown electromagnetically operable valve in the form of an injector for fuel injection systems of mixture-compression, spark-ignition internal combustion engines has an electromagnetic circuit with a solenoid 1, which does not, as is common in such injectors, surrounds serving as a fuel inlet port and inner pole tubular core. Rather, the magnetic coil 1 surrounds a thin-walled cylindrical sleeve body 2.
- a bobbin 3 receives a winding of the magnetic coil 1.
- the bobbin 3 made of plastic passes directly into a mitgespritzten electrical connection plug 5, not shown in detail, via which the electrical contacting of the magnetic coil 1 takes place.
- the sleeve body 2 is arranged concentrically to a valve longitudinal axis 10, wherein the sleeve body 2 is either a metal non-magnetic intermediate part, which is made for example of stainless steel, or forms a magnetic throttle body in the magnetic circuit as a ferritic component.
- the bobbin 3 Surrounded is the bobbin 3 with the magnetic coil 1 of an outer cup-shaped Magnetic circuit component 11, which is part of the valve housing.
- a cover part 14 is inserted into the magnetic circuit component 11, which serves as the inner pole of the magnetic circuit.
- the lid part 14 is in turn connected to the sleeve body 2 by means of a second weld 15 tightly and firmly. With the cover part 14, the sleeve body 2 and the outer magnetic circuit component 11, a sealed, dense coil space is created in this way, which is interrupted only in the area of the electrical contacting of the magnetic coil 1 by a recess 16 in the cover part 14.
- the cover part 14 extends as a largely flat disc.
- the cover member 14 is also disc-shaped, but formed with a cylindrical extension 8, whereby it is possible to attach to an axially parallel peripheral surface 18 of the extension 8 of the cover member 14, the weld 15, 15b.
- a thin-walled tubular connecting part Downstream of the magnetic circuit component 11 extends a thin-walled tubular connecting part, which is designed here as a valve seat carrier 19, which is fixedly connected to the magnetic circuit component 11 via a third weld 20.
- the component bottom 12 of the magnetic circuit component 11 has an annular extension 22 which protrudes from the magnetic circuit component 11 such that the weld seam 20 can be attached in this region without impairing the magnetic coil 1 or other components for connection to the valve seat carrier 19.
- an axially movable valve needle 21 is arranged in the valve seat carrier 19.
- a spherical valve closing body 24 made of metal or ceramic is provided.
- the actuation of the injection valve is electromagnetically.
- the electromagnetic circuit with the solenoid coil 1, the outer magnetic circuit member 11, the cover member 14 and an armature serves 27.
- the cup-shaped armature 27 is, for example formed integrally with a valve needle shaft 21a (right in FIG. 1 ) or at a stage 28 of the valve needle shaft 21 a and there firmly connected to this (left in FIG. 1 ).
- the guide of the armature 27 during its axial movement takes place along the inner wall of the sleeve body 2.
- the solenoid 1 end facing away from the valve seat support 19 is a cylindrical valve seat body 29 having a fixed valve seat 30, mounted by welding tight.
- the valve seat body 29 is made of metal or ceramic and sealed by a sealing ring 31.
- the spherical valve closing body 24 of the valve needle 21 cooperates with the valve seat 30 of the valve seat body 29, which tapers frustoconically in the flow direction.
- the valve seat body 29 On its lower end face, the valve seat body 29 is provided with a spray hole disk 34 of flat design, for example, and of e.g. cup-shaped holding disc 35 fixed and tight by a z. B. connected by means of a laser weld.
- the spray perforated disk 34 at least one, for example, four ejection openings 39 formed by eroding or punching are provided.
- a plurality of flow-through grooves 40 are provided circumferentially in the valve seat body 29 in the region of a guide section.
- the arrangement of the cover part 14 in the outer magnetic circuit component 11 and on the sleeve body 2 is crucial for the stroke of the valve needle 21.
- the one end position of the valve needle 21 is fixed at non-energized magnetic coil 1 by the contact of the valve closing body 24 to the valve seat 30 of the valve seat body 29 while the other end position of the valve needle 21 results in energized solenoid coil 1 by the system of the armature 27 at the lower end of the cover part 14, which is provided there eg with a wear protection layer.
- the cover part 14 is firmly connected to a thin-walled connecting piece 41 by means of a fourth weld seam 38.
- the connecting piece 41 extends in a tubular manner and can be shaped in a targeted manner via steps at different points with respect to the inner diameter, such as FIG. 1 can be seen. Variable lengths for the connecting pieces 41 can be used.
- the connecting piece 41 engages either in a groove 36 on the cover part 14 (left in FIG. 1 ) or sits on a shoulder 37 of the lid part 14 (right in FIG. 1 ).
- the shoulder 37 may be formed with a width in the wall thickness of the connecting piece 41, so that the connecting piece 41 is flush with the inner bore of the cover member 14 seated on this.
- a setting 43 is fitted in a concentric with the valve longitudinal axis 10 extending flow bore 42 of the connecting piece 41, which serves to supply the fuel in the direction of the valve seat 30, except for the return spring 26, a setting 43 is fitted.
- the adjusting member 43 is used to adjust the spring bias of the voltage applied to the adjusting element 43 return spring 26, which in turn is supported with its opposite side of the armature 27, wherein an adjustment of the dynamic Abspritzmenge with the adjustment 43.
- a fuel filter 44 is integrated directly in the adjusting element 43.
- the fuel injection valve according to the invention is characterized by a particularly compact design in the region of the magnetic circuit as well as in the areas upstream and downstream of the magnetic circuit, so that a very small, handy injection valve is formed.
- Both the connecting piece 41 and the valve seat carrier 19 are designed as thin-walled deep-drawn components which inflow the inflow valve and downstream with bent annular collar 45, 46 limit.
- These annular collars 45, 46 each form a boundary of an annular groove 47, 48, in each of which a sealing ring 49, 50 in the form of an O-ring for sealing the fuel injection valve to the outside (fuel rail, intake manifold) is introduced.
- the respective other boundary of the annular grooves 47, 48 define spacers 52, 53, which are pushed circumferentially on the connecting piece 41 and the valve seat carrier 19.
- the spacers 52, 53 are formed for example of plastic and have a structure that is highly stable by chamber-like, outwardly reaching cavities and very low mass.
- Length variants of the fuel injection valve are very easy to produce in large numbers by differently long and specifically shaped connection piece 41, valve seat carrier 19, valve needles 21 and spacers 52, 53.
- a color coding of the fuel injectors is very easy on appropriately colored spacers 52, 53 possible.
- a plastic extrusion of the fuel injection valve can be omitted.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Die Erfindung geht aus von einem Brennstoffeinspritzventil nach der Gattung des Hauptanspruchs, wie z.B. in der
Aus der
Aus der
Das erfindungsgemäße Brennstoffeinspritzventil mit den kennzeichnenden Merkmalen des Hauptanspruchs hat den Vorteil, dass auf einfache und kostengünstige Art und Weise ein besonders kompakter Aufbau im Bereich des Magnetkreises sowie auch in den Bereichen stromaufwärts und stromabwärts des Magnetkreises realisierbar ist, so dass ein sehr kleines, handliches Einspritzventil entsteht. Erfindungsgemäß ist eine einfache konstruktive Lösung gegeben, mit der ein abgeschlossener dichter Spulenraum zur Spulenabdichtung geschaffen ist, indem ein sehr einfach gestaltetes, als Innenpol des Magnetkreises dienendes Deckelteil in ein äußeres Magnetkreisbauteil eingesetzt ist. Da die Bauteile des elektromagnetischen Kreises wie auch die mit den Magnetkreisbauteilen verbundenen Anschlussteile sehr einfache Geometrien aufweisen und ein kostengünstiges Design aufweisen, ist das Brennstoffeinspritzventil besonders günstig in der Herstellung der Einzelteile und der Montage. Der sehr kurze Magnetkreis arbeitet sehr wirkungsvoll mit geringen Verlusten und weist insofern beste Funktionseigenschaften auf. Die erfindungsgemäße Konstruktion ermöglicht es, ein Brennstoffeinspritzventil mit einer Gesamtlänge von < 30 mm zu fertigen.The fuel injection valve according to the invention with the characterizing features of the main claim has the advantage that in a simple and cost-effective manner, a particularly compact structure in the region of the magnetic circuit and in the areas upstream and downstream of the magnetic circuit can be realized, so that a very small, handy injection valve arises. According to the invention, a simple structural solution is provided with which a sealed dense coil space is created for coil sealing by a very simple design, serving as the inner pole of the magnetic circuit cover part is inserted into an outer magnetic circuit component. Since the components of the electromagnetic circuit as well as the connected to the magnetic circuit components connecting parts have very simple geometries and have a low-cost design, the fuel injector is particularly favorable in the production of the items and the assembly. The very short magnetic circuit works very effectively with low losses and thus has the best functional properties. The construction according to the invention makes it possible to produce a fuel injection valve with a total length of <30 mm.
Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Hauptanspruch angegebenen Brennstoffeinspritzventils möglich.The measures listed in the dependent claims advantageous refinements and improvements of the main claim fuel injector are possible.
Erfindungsgemäß ist es, den dichten Spulenraum für die Magnetspule mit dem äußeren Magnetkreisbauteil, dem Deckelteil und einem dünnwandigen Hülsenkörper zu begrenzen. Der Hülsenkörper stellt ein metallenes nichtmagnetisches Zwischenteil dar oder bildet als ferritisches Bauteil eine magnetische Drosselstelle im Magnetkreis. Das Deckelteil ist mit dem Hülsenkörper fest verbunden mittels einer Schweißnaht. Durch geringe Änderungen der Kontur des scheibenförmigen Deckelteils lassen sich verschiedenste Befestigungsvarianten mit einem Anschlussstutzen und/oder dem Hülsenkörper realisieren.According to the invention, the dense coil space for the magnetic coil with the outer magnetic circuit component, the cover part and a thin-walled sleeve body to limit. The sleeve body is a metal non-magnetic intermediate part or forms as a ferritic component, a magnetic throttle point in the magnetic circuit. The cover part is firmly connected to the sleeve body by means of a weld. By small changes in the contour of the disc-shaped cover part can be realized a variety of mounting options with a connection piece and / or the sleeve body.
Längenvarianten des erfindungsgemäßen Brennstoffeinspritzventils sind in großer Anzahl sehr einfach herstellbar durch verschieden lange und spezifisch geformte Anschlussstutzen, Ventilsitzträger, Ventilnadeln und Distanzstücke.Length variants of the fuel injection valve according to the invention are very easy to produce in large numbers by differently long and specifically shaped connecting pieces, valve seat carrier, valve needles and spacers.
Ausführungsbeispiele der Erfindung sind in der Zeichnung vereinfacht dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigt
Das in der
Der Hülsenkörper 2 ist konzentrisch zu einer Ventillängsachse 10 angeordnet, wobei der Hülsenkörper 2 entweder ein metallenes nichtmagnetisches Zwischenteil darstellt, das z.B. aus Edelstahl gefertigt ist, oder als ferritisches Bauteil eine magnetische Drosselstelle im Magnetkreis bildet. Umgeben ist der Spulenkörper 3 mit der Magnetspule 1 von einem äußeren topfförmigen Magnetkreisbauteil 11, das Teil des Ventilgehäuses ist. Mit dem Bauteilboden 12 des Magnetkreisbauteils 11 ist der Hülsenkörper 2 mittels einer ersten Schweißnaht 13 dicht und fest verbunden. Auf der dem Bauteilboden 12 gegenüberliegenden Seite ist in das Magnetkreisbauteil 11 ein Deckelteil 14 eingesetzt, das als Innenpol des Magnetkreises dient. Das Deckelteil 14 ist wiederum mit dem Hülsenkörper 2 mittels einer zweiten Schweißnaht 15 dicht und fest verbunden. Mit dem Deckelteil 14, dem Hülsenkörper 2 und dem äußeren Magnetkreisbauteil 11 ist auf diese Weise ein abgeschlossener dichter Spulenraum geschaffen, der nur im Bereich der elektrischen Kontaktierung der Magnetspule 1 durch eine Ausnehmung 16 im Deckelteil 14 unterbrochen ist.The
In einer erfindungsgemäßen Ausführungsform (links in
Stromabwärts des Magnetkreisbauteils 11 erstreckt sich ein dünnwandiges rohrförmiges Anschlussteil, das hier als Ventilsitzträger 19 ausgebildet ist, der fest mit dem Magnetkreisbauteil 11 über eine dritte Schweißnaht 20 verbunden ist. Der Bauteilboden 12 des Magnetkreisbauteils 11 besitzt einen Ringfortsatz 22, der so vom Magnetkreisbauteil 11 absteht, dass die Schweißnaht 20 in diesem Bereich ohne Beeinträchtigungen der Magnetspule 1 oder anderer Bauteile zum Verbinden mit dem Ventilsitzträger 19 angebracht werden kann. In dem Ventilsitzträger 19 ist eine axial bewegbare Ventilnadel 21 angeordnet. Am stromabwärtigen Ende 23 der Ventilnadel 21 ist ein kugelförmiger Ventilschließkörper 24 aus Metall oder Keramik vorgesehen.Downstream of the
Die Betätigung des Einspritzventils erfolgt elektromagnetisch. Zur axialen Bewegung der Ventilnadel 21 und damit zum Öffnen entgegen der Federkraft einer Rückstellfeder 26 bzw. zum Schließen des Einspritzventils dient der elektromagnetische Kreis mit der Magnetspule 1, dem äußeren Magnetkreisbauteil 11, dem Deckelteil 14 und einem Anker 27. Der topfförmige Anker 27 ist z.B. einteilig mit einem Ventilnadelschaft 21a ausgebildet (rechts in
Der kugelförmige Ventilschließkörper 24 der Ventilnadel 21 wirkt mit dem sich in Strömungsrichtung kegelstumpfförmig verjüngenden Ventilsitz 30 des Ventilsitzkörpers 29 zusammen. An seiner unteren Stirnseite ist der Ventilsitzkörper 29 mit einer beispielsweise flach ausgebildeten Spritzlochscheibe 34 und einer z.B. topfförmig ausgebildeten Haltescheibe 35 fest und dicht durch eine z. B. mittels eines Lasers ausgebildete Schweißnaht verbunden. In der Spritzlochscheibe 34 sind wenigstens eine, beispielsweise vier durch Erodieren oder Stanzen ausgeformte Abspritzöffnungen 39 vorgesehen. Um eine Brennstoffversorgung bis hin zum Ventilsitz 30 zu gewährleisten, sind im Bereich eines Führungsabschnitts im Ventilsitzkörper 29 umfangsmäßig mehrere Durchströmnuten 40 vorgesehen.The spherical
Die Anordnung des Deckelteils 14 im äußeren Magnetkreisbauteil 11 und an dem Hülsenkörper 2 ist entscheidend für den Hub der Ventilnadel 21. Dabei ist die eine Endstellung der Ventilnadel 21 bei nicht erregter Magnetspule 1 durch die Anlage des Ventilschließkörpers 24 an dem Ventilsitz 30 des Ventilsitzkörpers 29 festgelegt, während sich die andere Endstellung der Ventilnadel 21 bei erregter Magnetspule 1 durch die Anlage des Ankers 27 am unteren Ende des Deckelteils 14 ergibt, das dort z.B. mit einer Verschleißschutzschicht versehen ist. Zuströmseitig ist das Deckelteil 14 mit einem dünnwandigen Anschlussstutzen 41 mittels einer vierten Schweißnaht 38 fest verbunden. Der Anschlussstutzen 41 verläuft rohrförmig und kann dabei über Stufen an unterschiedlichen Stellen gezielt bzgl. des Innendurchmessers geformt sein, wie
Das erfindungsgemäße Brennstoffeinspritzventil zeichnet sich durch einen besonders kompakten Aufbau im Bereich des Magnetkreises sowie auch in den Bereichen stromaufwärts und stromabwärts des Magnetkreises aus, so dass ein sehr kleines, handliches Einspritzventil entsteht. Sowohl der Anschlussstutzen 41 als auch der Ventilsitzträger 19 sind als dünnwandige tiefgezogene Bauteile ausgeführt, die das Brennstoffeinspritzventil zuström- und abströmseitig mit umgebogenen Ringkragen 45, 46 begrenzen. Diese Ringkragen 45, 46 bilden jeweils eine Begrenzung einer Ringnut 47, 48, in die jeweils ein Dichtring 49, 50 in Form eines O-Rings zur Abdichtung des Brennstoffeinspritzventils nach außen hin (Fuel Rail, Saugrohr) eingebracht ist.The fuel injection valve according to the invention is characterized by a particularly compact design in the region of the magnetic circuit as well as in the areas upstream and downstream of the magnetic circuit, so that a very small, handy injection valve is formed. Both the connecting
Die jeweils andere Begrenzung der Ringnuten 47, 48 legen Distanzstücke 52, 53 fest, die umfangsmäßig auf den Anschlussstutzen 41 bzw. den Ventilsitzträger 19 aufgeschoben sind. Die Distanzstücke 52, 53 sind beispielsweise aus Kunststoff geformt und besitzen eine Struktur, die durch kammerartige, nach außen hin reichende Hohlräume hochstabil und dabei aber sehr massearm ist. Längenvarianten des Brennstoffeinspritzventils sind in großer Anzahl sehr einfach herstellbar durch verschieden lange und spezifisch geformte Anschlussstutzen 41, Ventilsitzträger 19, Ventilnadeln 21 und Distanzstücke 52, 53. Eine Farbkennzeichnung der Brennstoffeinspritzventile ist sehr einfach über entsprechend eingefärbte Distanzstücke 52, 53 möglich. Eine Kunststoffumspritzung des Brennstoffeinspritzventils kann entfallen.The respective other boundary of the
Claims (8)
- Fuel injection valve for fuel injection systems of internal combustion engines, having a valve longitudinal axis (10), having an excitable actuator in the form of an electromagnetic circuit with a magnet coil (1), with an outer magnetic circuit component (11) and with a movable armature (27) for actuating a valve closing body (24) which interacts with a valve seat (30) provided on a valve seat body (29), wherein the outer magnetic circuit component (11) has a component base (12) and, on the side opposite the component base (12), a disc-shaped cover part (14) is inserted into the outer magnetic circuit component (11), which cover part serves as an inner pole of the magnetic circuit, and wherein a sealed coil chamber for the magnet coil (1) is delimited by the outer magnetic circuit component (11), the cover part (14) and a thin-walled sleeve body (2),
characterized
in that the cover part (14) is fixedly connected to the sleeve body (2) by means of a weld seam (15), and
in that the sleeve body (2) has an L-shape in cross section, in which an annular collar (9) is bent away from the profile which is otherwise cylindrical in the circumferential direction, such that the weld seam (15, 15a) is realized on a horizontal end surface (17) of the cover part (14). - Fuel injection valve according to Claim 1,
characterized
in that the cover part (14) is fixedly connected at the inflow side to a connection piece (41), in particular by means of a weld seam (38). - Fuel injection valve according to Claim 2,
characterized
in that the connection piece (41) is of tubular and thin-walled design. - Fuel injection valve according to Claim 2 or 3,
characterized
in that the connection piece (41) engages into a groove (36) on the cover part (14). - Fuel injection valve according to one of the preceding claims,
characterized
in that the electrical contacting of the magnet coil (1) is realized through a recess (16) in the cover part (14). - Fuel injection valve according to Claim 1,
characterized
in that the sleeve body (2) is a metallic, non-magnetic intermediate part or, as a ferritic component, forms a magnetic throttling point in the magnetic circuit. - Fuel injection valve according to one of the preceding claims,
characterized
in that the cover part (14) serves as a stop for the armature (27), said cover part being provided there in particular with a wear protection coating. - Fuel injection valve according to one of the preceding claims,
characterized
in that the fuel injection valve has an overall length of < 30 mm.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007049946A DE102007049946A1 (en) | 2007-10-18 | 2007-10-18 | Fuel injector |
PCT/EP2008/063003 WO2009053221A1 (en) | 2007-10-18 | 2008-09-29 | Fuel injection valve |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2201241A1 EP2201241A1 (en) | 2010-06-30 |
EP2201241B1 true EP2201241B1 (en) | 2011-12-21 |
Family
ID=40351980
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08804862A Not-in-force EP2201241B1 (en) | 2007-10-18 | 2008-09-29 | Electromagnetically driven fuel injection valve |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2201241B1 (en) |
AT (1) | ATE538303T1 (en) |
DE (1) | DE102007049946A1 (en) |
WO (1) | WO2009053221A1 (en) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3704542A1 (en) * | 1987-02-13 | 1988-08-25 | Vdo Schindling | Fuel injection valve |
US5150842A (en) | 1990-11-19 | 1992-09-29 | Ford Motor Company | Molded fuel injector and method for producing |
EP0781915A1 (en) * | 1995-12-26 | 1997-07-02 | General Motors Corporation | Fuel injector |
DE19712922B4 (en) | 1997-03-27 | 2005-08-11 | Robert Bosch Gmbh | Fuel injector |
-
2007
- 2007-10-18 DE DE102007049946A patent/DE102007049946A1/en not_active Withdrawn
-
2008
- 2008-09-29 WO PCT/EP2008/063003 patent/WO2009053221A1/en active Application Filing
- 2008-09-29 AT AT08804862T patent/ATE538303T1/en active
- 2008-09-29 EP EP08804862A patent/EP2201241B1/en not_active Not-in-force
Also Published As
Publication number | Publication date |
---|---|
EP2201241A1 (en) | 2010-06-30 |
ATE538303T1 (en) | 2012-01-15 |
WO2009053221A1 (en) | 2009-04-30 |
DE102007049946A1 (en) | 2009-04-23 |
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