DE102005037552B4 - Fuel injector - Google Patents
Fuel injector Download PDFInfo
- Publication number
- DE102005037552B4 DE102005037552B4 DE102005037552.9A DE102005037552A DE102005037552B4 DE 102005037552 B4 DE102005037552 B4 DE 102005037552B4 DE 102005037552 A DE102005037552 A DE 102005037552A DE 102005037552 B4 DE102005037552 B4 DE 102005037552B4
- Authority
- DE
- Germany
- Prior art keywords
- valve
- filter sleeve
- valve needle
- fuel injection
- filter
- 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
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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
- 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
- F02M51/0682—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 the body being hollow and its interior communicating with the fuel flow
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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
- F02M61/042—The valves being provided with fuel passages
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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
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/165—Filtering elements specially adapted in fuel inlets to injector
Abstract
Brennstoffeinspritzventil für Brennstoffeinspritzanlagen von Brennkraftmaschinen, mit einer Ventillängsachse (10), mit einem erregbaren Aktuator (1, 2, 27) zur Betätigung einer Ventilnadel (19) entlang der Ventillängsachse (10), wobei die Ventilnadel (19) einen Ventilschließkörper (21) umfasst, der mit einem festen Ventilsitz an einem Ventilsitzkörper (29) zusammenwirkt, und mit einem in der Ventilnadel (19) integrierten Filterelement, dadurch gekennzeichnet, dass das Filterelement als tiefgezogene Filterhülse (75) ausgebildet ist, die in eine innere Längsöffnung (76) der rohrförmigen Ventilnadel (19) eingehängt ist, wobei ein Durchmesser der in die Längsöffnung (76) der Ventilnadel (19) hineinragenden Filterhülse (75) so klein bemessen ist, dass ein zwischen der Filterhülse (75) und einer inneren Wandung der Ventilnadel (19) gebildeter Ringspalt (80) keine Durchflussdrosselung im Bereich von in der Ventilnadel (19) vorgesehenen Querbohrungen (81), durch die der Brennstoff das Innere der Ventilnadel (19) verlässt, darstellt.Fuel injection valve for fuel injection systems of internal combustion engines, having a valve longitudinal axis (10), with an excitable actuator (1, 2, 27) for actuating a valve needle (19) along the valve longitudinal axis (10), wherein the valve needle (19) comprises a valve closing body (21) which cooperates with a fixed valve seat on a valve seat body (29), and with a filter element integrated in the valve needle (19), characterized in that the filter element is formed as a deep drawn filter sleeve (75) which in an inner longitudinal opening (76) of the tubular valve needle (19) is mounted, wherein a diameter of the in the longitudinal opening (76) of the valve needle (19) projecting filter sleeve (75) is dimensioned so small that a between the filter sleeve (75) and an inner wall of the valve needle (19) formed annular gap (80) no flow restriction in the range provided in the valve needle (19) transverse bores (81), through which the Brennst off the interior of the valve needle (19) leaves represents.
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.
Aus der
Weitere Einspritzventile aus dem Stand der Technik sind aus der
Vorteile der ErfindungAdvantages of the invention
Das erfindungsgemäße Brennstoffeinspritzventil mit den kennzeichnenden Merkmalen des Hauptanspruchs hat den Vorteil, dass ein als „Secondary Filter“ eingesetztes Filterelement besonders einfach und kostengünstig herstellbar und in der Ventilnadel besonders einfach und zuverlässig und mit geringem Montageaufwand integrierbar ist. Erfindungsgemäß wird das Filterelement durch Tiefziehen in die Form einer Filterhülse gebracht und in eine innere Längsöffnung der rohrförmigen Ventilnadel eingehängt. Die Montage der Filterhülse in der Ventilnadel erfolgt ohne nennenswerten Kraftaufwand. Der Befestigungsprozess ist sehr gut automatisierbar und verursacht keine negativen Abschabungen.The fuel injection valve according to the invention with the characterizing features of the main claim has the advantage that a filter element used as "secondary filter" is particularly simple and inexpensive to produce and in the valve needle particularly simple and reliable and can be integrated with low installation costs. According to the invention, the filter element is brought by deep drawing in the form of a filter sleeve and suspended in an inner longitudinal opening of the tubular valve needle. The installation of the filter sleeve in the valve needle is done without significant effort. The attachment process is very easy to automate and does not cause any negative shavings.
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, die als Filter wirkenden Durchströmöffnungen in der tiefgezogenen Filterhülse in einer großen Anzahl mittels Laserbohren einzubringen.It is particularly advantageous to introduce the flow-through openings acting as filters in the thermoformed filter sleeve in a large number by means of laser drilling.
Die Filterhülse besitzt in vorteilhafter Weise an ihrem stromaufwärtigen Ende einen Ringkragen, der radial über den hülsenförmigen Grundkörper der Filterhülse übersteht. Der Ringkragen der Filterhülse stützt sich an einer oberen Stirnseite der Ventilnadel ab. Die Fixierung der Filterhülse erfolgt sehr einfach durch die auf die Ventilnadel wirkende Rückstellfeder, die am Ringkragen der Filterhülse aufliegt und den Ringkragen gegen die Stirnseite der Ventilnadel drückt.The filter sleeve has advantageously at its upstream end an annular collar which projects radially beyond the sleeve-shaped base body of the filter sleeve. The annular collar of the filter sleeve is supported on an upper end side of the valve needle. The fixation of the filter sleeve is very simple by acting on the valve needle return spring, which rests on the annular collar of the filter sleeve and presses the annular collar against the end face of the valve needle.
Zeichnungdrawing
Ausführungsbeispiele der Erfindung sind in der Zeichnung vereinfacht dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen
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
Zur Führung des Ventilschließkörpers
Die Einschubtiefe des Ventilsitzkörpers
Eine in eine konzentrisch zur Ventillängsachse
In der
Die Filterhülse
Die Filterhülse
Die Filterhülse
Die Filterhülse
In der
Eine Vergrößerung der Filterfläche kann dadurch erzielt werden, dass die Länge der Filterhülse
Claims (13)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005037552.9A DE102005037552B4 (en) | 2005-08-09 | 2005-08-09 | Fuel injector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005037552.9A DE102005037552B4 (en) | 2005-08-09 | 2005-08-09 | Fuel injector |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102005037552A1 DE102005037552A1 (en) | 2007-02-15 |
DE102005037552B4 true DE102005037552B4 (en) | 2018-10-31 |
Family
ID=37680989
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102005037552.9A Active DE102005037552B4 (en) | 2005-08-09 | 2005-08-09 | Fuel injector |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102005037552B4 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2698525A1 (en) * | 2012-08-13 | 2014-02-19 | Continental Automotive GmbH | Valve needle, valve assembly and injection valve |
DE102013201897A1 (en) * | 2013-02-06 | 2014-08-07 | Robert Bosch Gmbh | Valve for metering fluid |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4421881A1 (en) | 1994-06-23 | 1996-01-04 | Bosch Gmbh Robert | Valve needle |
DE10109410A1 (en) | 2001-02-28 | 2002-09-05 | Bosch Gmbh Robert | Fuel injector |
JP2003322071A (en) | 2002-04-26 | 2003-11-14 | Hitachi Unisia Automotive Ltd | Fuel injection valve |
-
2005
- 2005-08-09 DE DE102005037552.9A patent/DE102005037552B4/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4421881A1 (en) | 1994-06-23 | 1996-01-04 | Bosch Gmbh Robert | Valve needle |
DE10109410A1 (en) | 2001-02-28 | 2002-09-05 | Bosch Gmbh Robert | Fuel injector |
JP2003322071A (en) | 2002-04-26 | 2003-11-14 | Hitachi Unisia Automotive Ltd | Fuel injection valve |
Also Published As
Publication number | Publication date |
---|---|
DE102005037552A1 (en) | 2007-02-15 |
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Legal Events
Date | Code | Title | Description |
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R012 | Request for examination validly filed |
Effective date: 20120420 |
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R084 | Declaration of willingness to licence | ||
R016 | Response to examination communication | ||
R016 | Response to examination communication | ||
R018 | Grant decision by examination section/examining division | ||
R020 | Patent grant now final |