DE102007050814B4 - Fuel injector - Google Patents
Fuel injector Download PDFInfo
- Publication number
- DE102007050814B4 DE102007050814B4 DE102007050814.1A DE102007050814A DE102007050814B4 DE 102007050814 B4 DE102007050814 B4 DE 102007050814B4 DE 102007050814 A DE102007050814 A DE 102007050814A DE 102007050814 B4 DE102007050814 B4 DE 102007050814B4
- Authority
- DE
- Germany
- Prior art keywords
- intermediate part
- core
- valve
- region
- fuel 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.)
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Classifications
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- 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
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
- F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
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- 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
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- 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
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
- F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
- F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
Abstract
Brennstoffeinspritzventil für Brennstoffeinspritzanlagen von Brennkraftmaschinen, mit einer Ventillängsachse (10), mit einem erregbaren Aktuator in Form eines elektromagnetischen Kreises mit einer Magnetspule (1), einem festen Kern (2) und einem bewegbaren Anker (27) zur Betätigung eines Ventilschließkörpers (24), der mit einer an einem Ventilsitzkörper (29) vorgesehenen Ventilsitzfläche (30) zusammenwirkt, und mit einem stromabwärts des Kerns (2) angeordneten Anschlussteil (16), wobei der Kern (2) und das Anschlussteil (16) jeweils mit einem nichtmagnetischen Zwischenteil (120) verbunden sind und zusammen ein inneres metallenes Ventilrohr bilden, dadurch gekennzeichnet, dass das Zwischenteil (120) eine zylindrische innere Bohrung (54) aufweist, deren konstanter Innendurchmesser sich wenigstens von einem ersten Befestigungsbereich (55) des Zwischenteils (120) am Kern (2) bis hin zu einem Führungsbereich (56) des Zwischenteils (120) für den Anker (27) erstreckt.Fuel injection valve for fuel injection systems of internal combustion engines, having a valve longitudinal axis (10), with an excitable actuator in the form of an electromagnetic circuit with a magnetic coil (1), a fixed core (2) and a movable armature (27) for actuating a valve closing body (24), which cooperates with a valve seat surface (30) provided on a valve seat body (29) and with a connection part (16) arranged downstream of the core (2), the core (2) and the connection part (16) each being provided with a nonmagnetic intermediate part (120) ) and together form an inner metal valve tube, characterized in that the intermediate part (120) has a cylindrical inner bore (54), the constant inner diameter of which extends at least from a first attachment region (55) of the intermediate part (120) to the core (2 ) extends to a guide region (56) of the intermediate part (120) for the armature (27).
Description
Stand der TechnikState of the art
Die Erfindung geht aus von einem Brennstoffeinspritzventil nach der Gattung des Hauptanspruchs.The invention relates to a fuel injection valve according to the preamble of the main claim.
In der
Aus der
Bekannt sind des weiteren aus der
Vorteile der ErfindungAdvantages of the invention
Das erfindungsgemäße Brennstoffeinspritzventil mit den kennzeichnenden Merkmalen des Hauptanspruchs hat den Vorteil, dass auf besonders einfache und kostengünstige Art und Weise eine magnetische Trennung im Magnetkreis des Brennstoffeinspritzventils erzielt ist. Das nichtmagnetische Zwischenteil zeichnet sich in seiner Dimensionierung und Ausgestaltung als besonders Bauraum sparendes Bauteil aus. Das Zwischenteil ist erfindungsgemäß mit einer sehr einfachen geometrischen Form ausgebildet, wobei das ringförmige, dünnwandige Zwischenteil einen konstanten Innendurchmesser seiner zylindrischen inneren Bohrung aufweist und der konstante Innendurchmesser des Zwischenteils wenigstens von einem ersten Befestigungsbereich des Zwischenteils am Kern bis hin zu einem Führungsbereich des Zwischenteils für den Anker verläuft. Dieses Zwischenteil ist durch seine Ausgestaltung besonders einfach montierbar.The fuel injection valve according to the invention with the characterizing features of the main claim has the advantage that a magnetic separation in the magnetic circuit of the fuel injection valve is achieved in a particularly simple and cost-effective manner. The non-magnetic intermediate part is characterized in its dimensioning and design as a particularly space-saving component. The intermediate part is inventively formed with a very simple geometric shape, wherein the annular, thin-walled intermediate part has a constant inner diameter of its cylindrical inner bore and the constant inner diameter of the intermediate part at least from a first attachment region of the intermediate part of the core up to a guide portion of the intermediate part for the Anchor runs. This intermediate part is particularly easy to install due to its design.
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.
Besonders vorteilhaft ist es, einen zweiten Befestigungsbereich des Zwischenteils am Anschlussteil ringstegförmig auszubilden, der dabei einen ebenfalls ringstegförmigen dünnwandigen, zum Zwischenteil hin ragenden Fortsatz des Anschlussteils umgibt. Der zweite Befestigungsbereich und der Fortsatz greifen dabei so ineinander, dass sich die Wandstärke des Führungsbereichs in dem Überlappungsbereich fortsetzt, um eine ausreichende Stabilität des gesamten metallenen Innenrohrs des Brennstoffeinspritzventils sicher zu gewährleisten.It is particularly advantageous to design a second fastening region of the intermediate part on the connecting part in the form of an annular rib, which in the process surrounds an extension of the connecting part that also protrudes in the manner of a ring web and is of a thin-walled design, projecting towards the intermediate part. The second fastening region and the extension engage in one another such that the wall thickness of the guide region continues in the overlapping region, in order to ensure sufficient stability of the entire metal inner tube of the fuel injection valve.
Figurenlistelist of figures
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung vereinfacht dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen
-
1 ein Brennstoffeinspritzventil gemäß dem Stand der Technik mit einem dreiteiligen inneren metallenen Ventilrohr, wobei ein nichtmagnetisches Zwischenteil der magnetischen Trennung dient und -
2 eine Detailansicht des Ausschnitts II in1 mit einem erfindungsgemäßen Zwischenteil zur magnetischen Trennung.
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1 a fuel injection valve according to the prior art with a three-piece inner metal valve tube, wherein a non-magnetic intermediate part of the magnetic separation is used and -
2 a detailed view of the section II in1 with an intermediate part according to the invention for magnetic separation.
Beschreibung des AusführungsbeispielsDescription of the embodiment
Das in der
Mit einem unteren Kernende
Die Betätigung des Einspritzventils erfolgt in bekannter Weise elektromagnetisch. Zur axialen Bewegung der Ventilnadel
Der kugelförmige Ventilschließkörper
Um den Magnetfluss zur optimalen Betätigung des Ankers
Das Einspritzventil ist weitgehend mit einer Kunststoffumspritzung
Um eine passgenaue Einpassung des Zwischenteils
Ausgehend von dem Führungsbereich
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007050814.1A DE102007050814B4 (en) | 2007-10-24 | 2007-10-24 | Fuel injector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007050814.1A DE102007050814B4 (en) | 2007-10-24 | 2007-10-24 | Fuel injector |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102007050814A1 DE102007050814A1 (en) | 2009-04-30 |
DE102007050814B4 true DE102007050814B4 (en) | 2019-10-02 |
Family
ID=40490110
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102007050814.1A Active DE102007050814B4 (en) | 2007-10-24 | 2007-10-24 | Fuel injector |
Country Status (1)
Country | Link |
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DE (1) | DE102007050814B4 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2703634A1 (en) * | 2012-09-04 | 2014-03-05 | Continental Automotive GmbH | Valve assembly for an injection valve and injection valve |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3502287A1 (en) | 1985-01-24 | 1986-07-24 | Robert Bosch Gmbh, 7000 Stuttgart | METHOD FOR PRODUCING A ROTATIONALLY SYMMETRICAL HOUSING, IN PARTICULAR A VALVE HOUSING |
DE4237405C2 (en) | 1991-12-17 | 1996-10-17 | Mitsubishi Electric Corp | Fuel injection device for an internal combustion engine and method for producing a solid core for this injection device |
DE19532865A1 (en) | 1995-09-06 | 1997-03-13 | Bosch Gmbh Robert | Fuel injector |
EP1055812A2 (en) | 1999-05-26 | 2000-11-29 | Siemens Automotive Corporation | Compressed natural gas fuel injector |
US20050258283A1 (en) | 2004-05-19 | 2005-11-24 | Czimmek Perry R | Magnetic circuit using negative magnetic susceptibility |
-
2007
- 2007-10-24 DE DE102007050814.1A patent/DE102007050814B4/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3502287A1 (en) | 1985-01-24 | 1986-07-24 | Robert Bosch Gmbh, 7000 Stuttgart | METHOD FOR PRODUCING A ROTATIONALLY SYMMETRICAL HOUSING, IN PARTICULAR A VALVE HOUSING |
DE4237405C2 (en) | 1991-12-17 | 1996-10-17 | Mitsubishi Electric Corp | Fuel injection device for an internal combustion engine and method for producing a solid core for this injection device |
DE19532865A1 (en) | 1995-09-06 | 1997-03-13 | Bosch Gmbh Robert | Fuel injector |
EP1055812A2 (en) | 1999-05-26 | 2000-11-29 | Siemens Automotive Corporation | Compressed natural gas fuel injector |
US20050258283A1 (en) | 2004-05-19 | 2005-11-24 | Czimmek Perry R | Magnetic circuit using negative magnetic susceptibility |
Also Published As
Publication number | Publication date |
---|---|
DE102007050814A1 (en) | 2009-04-30 |
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R012 | Request for examination validly filed |
Effective date: 20140703 |
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R084 | Declaration of willingness to licence | ||
R016 | Response to examination communication | ||
R018 | Grant decision by examination section/examining division | ||
R020 | Patent grant now final |