DE102004037250B4 - Fuel injector - Google Patents
Fuel injector Download PDFInfo
- Publication number
- DE102004037250B4 DE102004037250B4 DE200410037250 DE102004037250A DE102004037250B4 DE 102004037250 B4 DE102004037250 B4 DE 102004037250B4 DE 200410037250 DE200410037250 DE 200410037250 DE 102004037250 A DE102004037250 A DE 102004037250A DE 102004037250 B4 DE102004037250 B4 DE 102004037250B4
- Authority
- DE
- Germany
- Prior art keywords
- damping element
- fuel injection
- valve needle
- fuel
- injection valve
- 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.)
- Expired - Fee Related
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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
- 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
- F02M51/0685—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 and the valve being allowed to move relatively to each other or not being attached to each other
-
- 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
-
- 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
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
- F02M2200/306—Fuel-injection apparatus having mechanical parts, the movement of which is damped using mechanical 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/50—Arrangements of springs for valves used in fuel injectors or fuel injection pumps
- F02M2200/505—Adjusting spring tension by sliding spring seats
-
- 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
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
Brennstoffeinspritzventil (1), insbesondere zum direkten Einspritzen von Brennstoff in den Brennraum einer Brennkraftmaschine, mit einer Ventilnadel (3), die mit einer Ventilsitzfläche (6) zu einem Dichtsitz zusammenwirkt, und mit einem an der Ventilnadel (3) angreifenden Anker (20), wobei der Anker (20) an der Ventilnadel (3) axial beweglich ist und von einem aus einem Elastomer bestehenden Dämpfungselement (33) gedämpft wird, wobei das Dämpfungselement (33) auf einem mit der Ventilnadel (3) kraftschlüssig verbundenen Flansch (34) aufliegt, dadurch gekennzeichnet, daß eine dem Dämpfungselement (33) zugewandte Fläche (39) des Flansches (34) gewölbt ausgebildet ist.Fuel injection valve (1), in particular for direct injection of fuel into the combustion chamber of an internal combustion engine, with a valve needle (3) which interacts with a valve seat surface (6) to form a sealing seat, and with an armature (20) engaging the valve needle (3) , wherein the armature (20) is axially movable on the valve needle (3) and is damped by a damping element (33) made of an elastomer, the damping element (33) on a flange (34) connected to the valve needle (3) in a force-locking manner rests, characterized in that a surface (39) of the flange (34) facing the damping element (33) is curved.
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.
Beispielsweise ist aus der Druckschrift
Nachteilig ist dabei insbesondere, daß der großflächige Elastomerring leicht aus seiner Ruheposition auswandern kann und dann durch Verklemmen einerseits zerstört werden kann und somit zu Fehlfunktionen des Brennstoffeinspritzventils führen kann.A disadvantage is in particular that the large-area elastomeric ring can easily migrate from its rest position and then can be destroyed by jamming on the one hand and thus can lead to malfunction of the fuel injector.
Aus der
Aus den
Aus der
Vorteile der ErfindungAdvantages of the invention
Das erfindungsgemäße Brennstoffeinspritzventil mit den kennzeichnenden Merkmalen des Hauptanspruchs hat demgegenüber den Vorteil, daß das Dämpfungselement durch eine gewölbte Form einer dem Dämpfungselement zugewandten Fläche des Flansches automatisch entwässert wird und dadurch nicht mehr so weit auswandern kann, daß Beschädigungsgefahr besteht.The fuel injection valve according to the invention with the characterizing features of the main claim has the advantage that the damping element is automatically dewatered by a curved shape of the damping element facing surface of the flange and thus can not emigrate so much that there is a risk of damage.
Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterentwicklungen des im Hauptanspruch angegebenen Brennstoffeinspritzventils möglich.The measures listed in the dependent claims advantageous developments of the fuel injection valve specified in the main claim are possible.
Vorteilhafterweise ist die Fläche des Flansches konvex unter einem Krümmungsradius R gekrümmt, der frei wählbar ist und insbesondere konstant sein kann.Advantageously, the surface of the flange is curved convexly under a radius of curvature R, which is arbitrary and in particular may be constant.
Zudem ist von Vorteil, daß das Dämpfungselement lediglich über eine Anlagelinie an der Fläche anliegt, wodurch die Entwässerung vereinfacht wird.In addition, it is advantageous that the damping element rests only on a plant line on the surface, whereby the drainage is simplified.
Von Vorteil ist weiterhin, daß das Auswandern des Dämpfungselements dadurch begrenzt ist, daß ein Durchmesser der Anlagelinie stets kleiner ist als ein Durchmesser eines Zwischenrings, der dem Schutz des Dämpfungselements dient, wodurch ein Verhaken verhindert wird.A further advantage is that the migration of the damping element is limited by the fact that a diameter of the investment line is always smaller than a diameter of an intermediate ring, which serves to protect the damping element, whereby snagging is prevented.
Zeichnungdrawing
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung vereinfacht dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen:An embodiment of the invention is shown in simplified form in the drawing and explained in more detail in the following description. Show it:
Beschreibung des AusführungsbeispielsDescription of the embodiment
Bevor anhand von
Das Brennstoffeinspritzventil
Das Brennstoffeinspritzventil
Die Ventilnadel
An der abspritzseitigen Seite des Ankers
Erfindungsgemäß ist eine dem Dämpfungselement
Im Ruhezustand des Brennstoffeinspritzventils
Wird der Spulenstrom abgeschaltet, fällt der Anker
Dargestellt ist ein Teil der Ventilnadel
Ein grundsätzliches Problem bei der Anordnung eines ringförmigen Dämpfungselements
Um das Auswandern des Dämpfungselements
Das Dämpfungselement
Dadurch kann erreicht werden, daß das mit Brennstoff gefüllte Volumen im Dämpfungselement
Die Erfindung ist nicht auf die dargestellten Ausführungsbeispiele beschränkt und z. B. auch für nach außen öffnende Brennstoffeinspritzventile
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410037250 DE102004037250B4 (en) | 2004-07-31 | 2004-07-31 | Fuel injector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410037250 DE102004037250B4 (en) | 2004-07-31 | 2004-07-31 | Fuel injector |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102004037250A1 DE102004037250A1 (en) | 2006-02-16 |
DE102004037250B4 true DE102004037250B4 (en) | 2014-01-09 |
Family
ID=35668663
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200410037250 Expired - Fee Related DE102004037250B4 (en) | 2004-07-31 | 2004-07-31 | Fuel injector |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102004037250B4 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160237966A1 (en) * | 2013-10-10 | 2016-08-18 | Continental Automotive Gmbh | Injector For A Combustion Engine |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005023369B4 (en) * | 2005-05-20 | 2017-07-13 | Continental Automotive Gmbh | Injection valve and nozzle needle for the injection valve |
EP2112366B1 (en) | 2008-04-23 | 2011-11-02 | Magneti Marelli S.p.A. | Electromagnetic fuel injector for gaseous fuels with anti-wear stop device |
DE102010064105A1 (en) | 2010-12-23 | 2012-01-19 | Robert Bosch Gmbh | Valve for injecting fuel |
DE102017207273A1 (en) | 2016-06-30 | 2018-01-04 | Robert Bosch Gmbh | Valve for metering a fluid |
FR3073903B1 (en) * | 2017-11-23 | 2021-07-30 | Delphi Int Operations Luxembourg Sarl | FUEL INJECTOR |
DE102018200364A1 (en) * | 2018-01-11 | 2019-07-11 | Robert Bosch Gmbh | Valve for metering a fluid |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3332858A1 (en) * | 1983-09-12 | 1985-03-28 | Robert Bosch Gmbh, 7000 Stuttgart | Fuel injection nozzle for internal combustion engines |
US4766405A (en) * | 1987-04-14 | 1988-08-23 | Allied Corporation | Dynamic energy absorber |
DE19849210A1 (en) * | 1998-10-26 | 2000-04-27 | Bosch Gmbh Robert | Fuel injection valve for internal combustion engine fuel injection system has armature movable between two stops, damping spring arranged between second stop and armature |
DE19927900A1 (en) * | 1999-06-18 | 2000-12-21 | Bosch Gmbh Robert | Fuel injection valve for direct injection IC engine has movement of armature limited by opposing stops attached to valve needle one of which is provided by spring element |
DE19950761A1 (en) * | 1999-10-21 | 2001-04-26 | Bosch Gmbh Robert | Fuel injection valve has supporting ring between elastomeric ring and armature that supports elastomeric ring axially near opening of fuel channel in armature and radially on shoulder |
DE10043085A1 (en) * | 2000-09-01 | 2002-03-14 | Bosch Gmbh Robert | Fuel injector |
DE10146141A1 (en) * | 2001-09-19 | 2003-04-24 | Bosch Gmbh Robert | Magnetic valve for fuel injector for IC engine, has damping system preventing rebound of armature plate upon closure of valve element |
-
2004
- 2004-07-31 DE DE200410037250 patent/DE102004037250B4/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3332858A1 (en) * | 1983-09-12 | 1985-03-28 | Robert Bosch Gmbh, 7000 Stuttgart | Fuel injection nozzle for internal combustion engines |
US4766405A (en) * | 1987-04-14 | 1988-08-23 | Allied Corporation | Dynamic energy absorber |
DE19849210A1 (en) * | 1998-10-26 | 2000-04-27 | Bosch Gmbh Robert | Fuel injection valve for internal combustion engine fuel injection system has armature movable between two stops, damping spring arranged between second stop and armature |
DE19927900A1 (en) * | 1999-06-18 | 2000-12-21 | Bosch Gmbh Robert | Fuel injection valve for direct injection IC engine has movement of armature limited by opposing stops attached to valve needle one of which is provided by spring element |
DE19950761A1 (en) * | 1999-10-21 | 2001-04-26 | Bosch Gmbh Robert | Fuel injection valve has supporting ring between elastomeric ring and armature that supports elastomeric ring axially near opening of fuel channel in armature and radially on shoulder |
DE10043085A1 (en) * | 2000-09-01 | 2002-03-14 | Bosch Gmbh Robert | Fuel injector |
DE10146141A1 (en) * | 2001-09-19 | 2003-04-24 | Bosch Gmbh Robert | Magnetic valve for fuel injector for IC engine, has damping system preventing rebound of armature plate upon closure of valve element |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160237966A1 (en) * | 2013-10-10 | 2016-08-18 | Continental Automotive Gmbh | Injector For A Combustion Engine |
US10202953B2 (en) * | 2013-10-10 | 2019-02-12 | Continental Automotive Gmbh | Injector for a combustion engine |
Also Published As
Publication number | Publication date |
---|---|
DE102004037250A1 (en) | 2006-02-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R012 | Request for examination validly filed |
Effective date: 20110428 |
|
R016 | Response to examination communication | ||
R018 | Grant decision by examination section/examining division | ||
R020 | Patent grant now final | ||
R020 | Patent grant now final |
Effective date: 20141010 |
|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |