DE102009045836A1 - Fuel injection valve for installation into cylinder head of internal-combustion engine, has seat carrier including external thread, and screwed ring supporting axial stop formed at valve seat carrier in screwing position - Google Patents
Fuel injection valve for installation into cylinder head of internal-combustion engine, has seat carrier including external thread, and screwed ring supporting axial stop formed at valve seat carrier in screwing position Download PDFInfo
- Publication number
- DE102009045836A1 DE102009045836A1 DE200910045836 DE102009045836A DE102009045836A1 DE 102009045836 A1 DE102009045836 A1 DE 102009045836A1 DE 200910045836 DE200910045836 DE 200910045836 DE 102009045836 A DE102009045836 A DE 102009045836A DE 102009045836 A1 DE102009045836 A1 DE 102009045836A1
- Authority
- DE
- Germany
- Prior art keywords
- seat carrier
- valve
- valve seat
- housing
- 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.)
- Withdrawn
Links
- 238000002347 injection Methods 0.000 title claims description 21
- 239000007924 injection Substances 0.000 title claims description 21
- 239000000446 fuel Substances 0.000 title claims description 7
- 238000009434 installation Methods 0.000 title description 3
- 238000002485 combustion reaction Methods 0.000 title description 2
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 239000004809 Teflon Substances 0.000 claims abstract 2
- 229920006362 Teflon® Polymers 0.000 claims abstract 2
- 230000005489 elastic deformation Effects 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract 1
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract 1
- 238000005476 soldering Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
- 101100232929 Caenorhabditis elegans pat-4 gene Proteins 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
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
- F02M51/0603—Injectors peculiar thereto with means directly operating the valve needle using piezoelectric or magnetostrictive 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
- F02M61/04—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
- F02M61/08—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 the valves opening in direction of fuel flow
-
- 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
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
- F02M2200/8076—Fuel injection apparatus manufacture, repair or assembly involving threaded members
-
- 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
- F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
- F02M2200/8084—Fuel injection apparatus manufacture, repair or assembly involving welding or soldering
Abstract
Description
Stand der TechnikState of the art
Die Erfindung geht aus von einem Einspritzventil für ein Fluid, insbesondere für Kraftstoff, nach dem Oberbegriff des Anspruchs 1.The invention is based on an injection valve for a fluid, in particular for fuel, according to the preamble of claim 1.
Bei einem bekannten Kraftstoff-Einspritzventil (
Bei einigen Ventiltypen von Einspritzventilen können auf den Deckel relativ große Axialkräfte wirken, die für die Schweißnaht zu hoch sind und durch Bruch der Schweißnaht zum Ventilausfall führen.For some valve types of injectors, relatively large axial forces can act on the cover, which are too high for the weld and lead to valve failure due to breakage of the weld.
Offenbarung der ErfindungDisclosure of the invention
Das erfindungsgemäße Einspritzventil mit den Merkmalen des Anspruchs 1 hat den Vorteil, dass die erfindungsgemäße Schraubverbindung zwischen Ventilsitzträger und Ventilgehäuse gegenüber einer stoffschlüssigen Verbindung deutlich höhere Axialkräfte aufnehmen kann.The injection valve according to the invention with the features of claim 1 has the advantage that the screw connection according to the invention between valve seat carrier and valve housing can accommodate significantly higher axial forces against a cohesive connection.
Durch die in den weiteren Ansprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Anspruch 1 angegebenen Einspritzventils möglich.The measures listed in the further claims advantageous refinements and improvements of the claim 1 injection valve are possible.
Gemäß einer vorteilhaften Ausführungsform der Erfindung ist zur Sicherstellung eines fluiddichten Ventilgehäuses an der Schnittstelle zwischen Ventilgehäuse und Ventilsitzträger der Schraubring gegenüber dem Ventilsitzträger und dem Ventilgehäuse abgedichtet. Diese Abdichtung ist vorteilhaft und kostengünstig durch eine erste stoffschlüssige Verbindung zwischen Schraubring und Ventilsitzträger und eine zweite stoffschlüssige Verbindung zwischen Schraubring und Ventilgehäuse hergestellt, wobei die stoffschlüssige Verbindung vorzugsweise durch Schweißen, aber auch durch Löten oder Kleben hergestellt wird. Alternativ kann die Abdichtung auch mittels separater Dichtungselemente erfolgen, wobei vorzugsweise eine Axialdichtung zwischen Schraubring und Axialanschlag am Ventilsitzträger und eine in das Schraubgewinde eingelegte, radial gegen das Ventilgehäuse dichtende Dichtung verwendet werden.According to an advantageous embodiment of the invention is sealed to ensure a fluid-tight valve housing at the interface between the valve housing and valve seat carrier of the threaded ring relative to the valve seat carrier and the valve housing. This seal is made advantageously and inexpensively by a first cohesive connection between the screw ring and valve seat carrier and a second cohesive connection between the screw ring and the valve housing, wherein the cohesive connection is preferably made by welding, but also by soldering or gluing. Alternatively, the seal can also be effected by means of separate sealing elements, wherein preferably an axial seal between the screw ring and the axial stop on the valve seat carrier and a screw thread inserted in the radially against the valve housing sealing gasket are used.
Gemäß einer vorteilhaften Ausführungsform der Erfindung ist der Ventilsitzträger mit einem einen piezoelektrischen Aktor aufnehmenden Aktorgehäuse stoffschlüssig verbunden und das Aktorgehäuse mittels des Schraubrings axial, vorzugsweise unter elastischer Verformung, eingespannt. Da die Schraubverbindung sehr hohe Axialkräfte aufzunehmen vermag, ist es möglich, die Größe eines Kopplerspalts in einem hydraulischen Koppler zwischen dem die Ventilnadel betätigenden, piezoelektrischen Aktor und einer Aktorabstützung im Gehäuse angeordnet ist, über eine axiale elastische Verformung des Aktorgehäuses einzustellen. Bei Einschrauben des Schraubrings wird der mit dem Aktorgehäuse fest, vorzugsweise stoffschlüssig verbundene Ventilsitzträger über seinen Axialanschlag durch den Schraubring axial soweit belastet, bis das im Ventilgehäuse sich abstützende Aktorgehäuse sich soweit axial elastisch verformt hat, dass der gewünschte Kopplerspalt eingestellt ist. Durch Wahl von Drehmoment und Drehwinkel des Schraubrings kann der Kopplerspalt sehr präzise eingestellt werden. Nach Einstellung des Kopplerspalts wird der Schraubring durch die zur Abdichtung der Schnittstelle zwischen Ventilsitzträger, Schraubring und Ventilgehäuse angebrachten Schweißnähte in seiner Einstellposition und damit der Kopplerspalt in seiner Spaltbreite fixiert.According to an advantageous embodiment of the invention, the valve seat carrier with a piezoelectric actuator receiving actuator housing is integrally connected and the actuator housing by means of the screw axially, preferably with elastic deformation, clamped. Since the screw is able to absorb very high axial forces, it is possible to adjust the size of a coupler gap in a hydraulic coupler between the valve needle actuated, piezoelectric actuator and Aktorabstützung in the housing, via an axial elastic deformation of the actuator housing. When screwing the screw of the solid, preferably cohesively connected valve seat carrier via its axial stop by the threaded ring is loaded axially until the valve housing in the supporting actuator housing has deformed axially so far elastically that the desired coupler gap is set. By selecting the torque and angle of rotation of the screw ring, the coupler gap can be set very precisely. After adjusting the Kopplerspalts the threaded ring is fixed by the attached to seal the interface between the valve seat carrier, screw ring and valve housing welds in its set position and thus the coupler gap in its gap width.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Die Erfindung ist anhand von in den Zeichnungen dargestellten Ausführungsbeispielen in der nachfolgenden Beschreibung näher erläutert. Es zeigen:The invention is explained in more detail in the following description with reference to exemplary embodiments illustrated in the drawings. Show it:
Das in
Um diese hohen Axialkräfte sicher aufzunehmen, ist der Ventilsitzträger
Bei der Montage des Einspritzventils wird der mit dem Aktorgehäuse
Zur flüssigkeitsdichten Abdichtung der Trennstellen zwischen Schraubring
Alternativ können anstelle der stoffschlüssigen Verbindungen auch separate Dichtungselemente zur Abdichtung verwendet werden, wie dies in dem in
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102004021921 A1 [0002, 0013] DE 102004021921 A1 [0002, 0013]
- DE 10319599 A1 [0013] DE 10319599 A1 [0013]
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200910045836 DE102009045836A1 (en) | 2009-10-20 | 2009-10-20 | Fuel injection valve for installation into cylinder head of internal-combustion engine, has seat carrier including external thread, and screwed ring supporting axial stop formed at valve seat carrier in screwing position |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200910045836 DE102009045836A1 (en) | 2009-10-20 | 2009-10-20 | Fuel injection valve for installation into cylinder head of internal-combustion engine, has seat carrier including external thread, and screwed ring supporting axial stop formed at valve seat carrier in screwing position |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102009045836A1 true DE102009045836A1 (en) | 2011-04-21 |
Family
ID=43798711
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200910045836 Withdrawn DE102009045836A1 (en) | 2009-10-20 | 2009-10-20 | Fuel injection valve for installation into cylinder head of internal-combustion engine, has seat carrier including external thread, and screwed ring supporting axial stop formed at valve seat carrier in screwing position |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102009045836A1 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10319599A1 (en) | 2003-05-02 | 2004-11-18 | Robert Bosch Gmbh | Actuator unit for a piezo controlled fuel injection valve for a combustion engine, has a hollow body with a channel defined by edges in form fitting connection with each other |
DE102004021921A1 (en) | 2004-05-04 | 2005-12-01 | Robert Bosch Gmbh | Fuel injector |
-
2009
- 2009-10-20 DE DE200910045836 patent/DE102009045836A1/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10319599A1 (en) | 2003-05-02 | 2004-11-18 | Robert Bosch Gmbh | Actuator unit for a piezo controlled fuel injection valve for a combustion engine, has a hollow body with a channel defined by edges in form fitting connection with each other |
DE102004021921A1 (en) | 2004-05-04 | 2005-12-01 | Robert Bosch Gmbh | Fuel injector |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |