DE102006032743A1 - Actuator for lift drive of actuating element, particularly valve needle in fuel injection valve, has actuator connecting cable connected firmly with contact points by assembly of contact points in surface of actuator bearing - Google Patents
Actuator for lift drive of actuating element, particularly valve needle in fuel injection valve, has actuator connecting cable connected firmly with contact points by assembly of contact points in surface of actuator bearing Download PDFInfo
- Publication number
- DE102006032743A1 DE102006032743A1 DE102006032743A DE102006032743A DE102006032743A1 DE 102006032743 A1 DE102006032743 A1 DE 102006032743A1 DE 102006032743 A DE102006032743 A DE 102006032743A DE 102006032743 A DE102006032743 A DE 102006032743A DE 102006032743 A1 DE102006032743 A1 DE 102006032743A1
- Authority
- DE
- Germany
- Prior art keywords
- actuator
- stack
- contact points
- actuator according
- bearing
- 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- Withdrawn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
- 239000000446 fuel Substances 0.000 title claims description 12
- 238000002347 injection Methods 0.000 title claims description 9
- 239000007924 injection Substances 0.000 title claims description 9
- 239000000919 ceramic Substances 0.000 claims description 12
- 239000004020 conductor Substances 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 239000011810 insulating material Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 238000003860 storage Methods 0.000 description 10
- 238000003466 welding Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910001374 Invar Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000002123 temporal effect Effects 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/80—Constructional details
- H10N30/87—Electrodes or interconnections, e.g. leads or terminals
- H10N30/872—Connection electrodes of multilayer piezoelectric or electrostrictive devices, e.g. external electrodes
- H10N30/874—Connection electrodes of multilayer piezoelectric or electrostrictive devices, e.g. external electrodes embedded within piezoelectric or electrostrictive material, e.g. via connections
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/80—Constructional details
- H10N30/87—Electrodes or interconnections, e.g. leads or terminals
- H10N30/875—Further connection or lead arrangements, e.g. flexible wiring boards, terminal pins
-
- 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
- F02M2200/70—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
- F02M2200/703—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/50—Piezoelectric or electrostrictive devices having a stacked or multilayer structure
Abstract
Description
Stand der TechnikState of the art
Die Erfindung geht aus von einem Aktor zum Hubantrieb eines Stellglieds, insbesondere einer Ventilnadel in einem Kraftstoffeinspritzventil einer Brennkraftmaschine, nach dem Oberbegriff des Anspruchs 1.The Invention is based on an actuator for the lifting drive of an actuator, in particular a valve needle in a fuel injection valve an internal combustion engine, according to the preamble of claim 1.
Ein
bekannter sog. Piezoaktor für
ein Kraftstoffeinspritzventil (
Bin
ebenfalls bekannter Piezoaktor (
Offenbarung der ErfindungDisclosure of the invention
Der erfindungsgemäße Aktor mit den Merkmalen des Anspruchs 1 hat den Vorteil, dass durch die Anordnung der Kontaktstellen in der Ebene der Aktorlagerung die mit den Kontaktstellen fest verbundenen Aktoranschlusskabel nicht an dem Hub oder Teilhub des Aktors teilnehmen, also in Ruhe verharren und nicht bewegt werden. Damit werden die Aktoranschlusskabel mechanisch nicht belastet und sind nicht bruchgefährdet, wodurch sich die Lebensdauer des Aktors deutlich erhöht.Of the Inventive actuator with the features of claim 1 has the advantage that by the Arrangement of the contact points in the plane of Aktorlagerung the Not with the contact points firmly connected Aktoranschlusskabel Participate in the stroke or partial lift of the actuator, so remain in peace and not be moved. This makes the actuator connection cables mechanical not burdened and are not subject to breakage, which increases the life significantly increased by the actuator.
Durch die in den weiteren Ansprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Anspruch 1 angegebenen Aktors möglich.By in the further claims listed activities are advantageous developments and improvements of the claim 1 specified actuator possible.
Gemäß einer vorteilhaften Ausführungsform der Erfindung verläuft die Ebene der Aktorlagerung rechtwinklig zur Stapelachse und liegt in der Mitte der Längserstreckung des Stapels. Auf diese Weise führt der Stapel zwei gleich große, einander entgegengesetzte Teilhübe in axialer Richtung aus, und die statischen und dynamischen Kräfte gleichen sich derart aus, dass in der Aktorlagerung nur noch geringe zeitliche Kraftänderungen erfolgen und damit nur wenig Körperschall angeregt wird.According to one advantageous embodiment of the Invention proceeds the plane of Aktorlagerung perpendicular to the stacking axis and lies in the middle of the longitudinal extension of the pile. In this way leads the Stack two equal, opposite partial strokes in the axial direction, and the static and dynamic forces are the same so out of the fact that in the Aktorlagerung only small temporal changes in force done and thus little structure-borne noise is stimulated.
Gemäß einer bevorzugten Ausführungsform der Erfindung sind im Stapel zwei, voneinander querbeabstandet angeordnete, axiale Durchgangskanäle vorhanden, die jeweils von einem Anschlusselement durchzogen sind. Die Kontaktstelle an jedem Anschlusselement ist von einem Stopfen aus elektrisch leitendem Material gebildet, der in ein im Durchgangskanal mündendes Radialloch eingesetzt und mit dem Anschlusselement elektrisch leitend, z.B. durch Pressen oder Schweißen, verbunden ist. Diese konstruktive Gestaltung ermöglicht eine montagefreundliche und fertigungstechnisch einfache Kontaktierung der Aktoranschlusskabel an Aktoren mit innenliegenden oder eingegrabenen Anschlusselementen. Als Material für die Stopfen wird Silber, Kupfer, Invar oder eine elektrisch leitende Kunststoffmasse verwendet. Gemäß einer vorteilhaften Ausführungsform der Erfindung ist der Stapel in zwei vorzugsweise gleich lange Stapelteile unterteilt, die miteinander fluchtend ausgerichtet sind. Jeder Stapelteil weist zwei voneinander querbeabstandet angeordnete, axiale Durchgangskanäle auf, in die jeweils ein Anschlusselement so eingesetzt ist, dass es aus dem Stapelteil an dessen dem anderen Stapelteil zugekehrten Stirnende mit einem Vorstehabschnitt herausragt. Die einander zugekehrten Vorstehabschnitte sind in einer in der Ebene der Aktorlagerung liegenden Kontaktplatte paarweise zusammengefasst und die zusammengefassten Paare an je einer Kontaktstelle angebunden. Durch diese konstruktive Gestaltung des Stapels lässt sich der Aktor mit großer axialer Länge für einen großen axialen Antriebshub herstellen, wobei die einzelnen Stapelteile mit herkömmlicher Prozesstechnik kostengünstig gefertigt werden können.According to one preferred embodiment of Invention are stacked in the stack two, spaced from each other, axial passageways available, which are each traversed by a connecting element. The contact point at each connection element is electrically conductive from a plug Material formed in an opening in the passageway Radial hole used and electrically conductive with the connection element, e.g. by pressing or welding, connected is. This constructive design allows easy installation and manufacturing technology simple contacting of the actuator connection cable on actuators with internal or buried connection elements. As material for the plugs will be silver, copper, invar or an electrically conductive one Plastic compound used. According to one advantageous embodiment the invention, the stack is in two preferably the same length stacking parts divided, which are aligned with each other. Each stack part has two axially spaced-apart axial through-channels, in each of which a connection element is inserted so that it out the stacking part at the front end facing the other stacking part protrudes with a projection section. The facing each other Projecting sections are in a plane lying in the actuator bearing Contact plate summarized in pairs and the summarized Couples connected to one contact point each. Through this constructive Design of the stack leaves the actuator with large axial Length for one huge produce axial drive, wherein the individual stacking parts with conventional Process technology cost-effective can be made.
Gemäß einer bevorzugten Ausführungsform der Erfindung besteht die Kontaktplatte aus einem isolierenden Werkstoff, vorzugsweise aus Keramik und weist zur Aufnahme der Vorstehenden zwei Axialbohrungen auf, deren Bohrungswände mit einem Belag aus elektrisch leitendem Material versehen sind. Die Kontaktstellen werden von in den Axialbohrungen mündenden, vollständig mit elektrisch leitendem Material ausgefüllten Radialbohrungen gebildet. Zur Aufnahme von hohen mechanischen Spannungen in der Keramik-Kontaktplatte kann letztere mittels eines Metallrings gefasst oder gekapselt werden.According to a preferred embodiment According to the invention, the contact plate consists of an insulating material, preferably of ceramic, and has two axial bores for receiving the above, the bore walls of which are provided with a coating of electrically conductive material. The contact points are formed by opening into the axial bores, completely filled with electrically conductive material radial bores. To accommodate high mechanical stresses in the ceramic contact plate latter can be grasped or encapsulated by means of a metal ring.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Die Erfindung ist anhand von in der Zeichnung dargestellten Ausführungsbeispielen in der nachfolgenden Beschreibung näher erläutert. Es zeigen:The The invention is based on embodiments shown in the drawing explained in more detail in the following description. Show it:
Ausführungsformen der ErfindungEmbodiments of the invention
Das
in
In
Die
Stapel
Wie
die Schnittdarstellung in
Zur
Anbindung der zu dem Anschlussstecker
Bei
dem Stapel
Bei
den Stapelformen in
In
dem in
Wie
in
Claims (12)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006032743A DE102006032743A1 (en) | 2006-07-14 | 2006-07-14 | Actuator for lift drive of actuating element, particularly valve needle in fuel injection valve, has actuator connecting cable connected firmly with contact points by assembly of contact points in surface of actuator bearing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006032743A DE102006032743A1 (en) | 2006-07-14 | 2006-07-14 | Actuator for lift drive of actuating element, particularly valve needle in fuel injection valve, has actuator connecting cable connected firmly with contact points by assembly of contact points in surface of actuator bearing |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102006032743A1 true DE102006032743A1 (en) | 2008-01-17 |
Family
ID=38825307
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102006032743A Withdrawn DE102006032743A1 (en) | 2006-07-14 | 2006-07-14 | Actuator for lift drive of actuating element, particularly valve needle in fuel injection valve, has actuator connecting cable connected firmly with contact points by assembly of contact points in surface of actuator bearing |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102006032743A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITTO20091037A1 (en) * | 2009-12-24 | 2010-03-25 | Ce S I Ct Studi Ind Di Taddei Franco | PIEZOELECTRIC MOTOR AUTOGUIDED WITH RADIAL LOAD CAPACITY |
DE102008050539A1 (en) * | 2008-10-06 | 2010-04-08 | Epcos Ag | Piezo actuator with external electrode |
WO2010128001A1 (en) * | 2009-05-07 | 2010-11-11 | Epcos Ag | Piezo-actuator comprising electrical contacting pins |
DE102009034099A1 (en) * | 2009-07-21 | 2011-01-27 | Epcos Ag | Piezo actuator with electrical contact |
-
2006
- 2006-07-14 DE DE102006032743A patent/DE102006032743A1/en not_active Withdrawn
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008050539A1 (en) * | 2008-10-06 | 2010-04-08 | Epcos Ag | Piezo actuator with external electrode |
US9214620B2 (en) | 2008-10-06 | 2015-12-15 | Epcos Ag | Piezoelectric actuator with outer electrode |
EP2332192B1 (en) * | 2008-10-06 | 2015-12-16 | Epcos AG | Piezoactuator with an external electrode |
WO2010128001A1 (en) * | 2009-05-07 | 2010-11-11 | Epcos Ag | Piezo-actuator comprising electrical contacting pins |
DE102009034099A1 (en) * | 2009-07-21 | 2011-01-27 | Epcos Ag | Piezo actuator with electrical contact |
CN102472213A (en) * | 2009-07-21 | 2012-05-23 | 埃普科斯股份有限公司 | Piezoactuator having electrical contact |
US8441175B2 (en) | 2009-07-21 | 2013-05-14 | Epcos Ag | Piezoactuator having electrical contact |
ITTO20091037A1 (en) * | 2009-12-24 | 2010-03-25 | Ce S I Ct Studi Ind Di Taddei Franco | PIEZOELECTRIC MOTOR AUTOGUIDED WITH RADIAL LOAD CAPACITY |
EP2339657A1 (en) * | 2009-12-24 | 2011-06-29 | CE.S.I. Centro Studi Industriali di Taddei Ing. Franco & C. S.a.s. | Self-guided piezoelectric motor with radial load capability |
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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 |
Effective date: 20120201 |