DE10321695A1 - Tensile spring for piezoelectric or magnetostrictive actor actuating fuel injection valve in car fuel injection systems - Google Patents
Tensile spring for piezoelectric or magnetostrictive actor actuating fuel injection valve in car fuel injection systems Download PDFInfo
- Publication number
- DE10321695A1 DE10321695A1 DE2003121695 DE10321695A DE10321695A1 DE 10321695 A1 DE10321695 A1 DE 10321695A1 DE 2003121695 DE2003121695 DE 2003121695 DE 10321695 A DE10321695 A DE 10321695A DE 10321695 A1 DE10321695 A1 DE 10321695A1
- Authority
- DE
- Germany
- Prior art keywords
- tension spring
- spring according
- actuator
- fuel injection
- piezoelectric
- 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- Withdrawn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 abstract description 15
- 238000002347 injection Methods 0.000 title claims abstract description 11
- 239000007924 injection Substances 0.000 title claims abstract description 11
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 210000002414 leg Anatomy 0.000 claims description 4
- 210000000689 upper leg Anatomy 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000002178 crystalline material Substances 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
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/004—Actuating devices; Operating means; Releasing devices actuated by piezoelectric means
- F16K31/007—Piezo-electric stacks
-
- 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
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/025—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant characterised by having a particular shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
-
- 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
- H10N30/88—Mounts; Supports; Enclosures; Casings
- H10N30/886—Mechanical prestressing means, e.g. springs
-
- 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
- F02M2200/26—Fuel-injection apparatus with elastically deformable elements other than coil springs
Abstract
Description
Die Erfindung geht aus von einer Zugfeder für einen piezoelektrischen oder magnetostriktiven Aktor nach der Gattung des Hauptanspruchs.The Invention is based on a tension spring for a piezoelectric or magnetostrictive actuator according to the genus of the main claim.
Üblicherweise werden piezoelektrische und magnetostriktive Aktoren zur Betätigung von Brennstoffeinspritzventilen für Brennstoffeinspritzanlagen von Brennkraftmaschinen zur Vermeidung von Zug- und Scherkräften durch eine Feder vorgespannt. Gewöhnlich wird zur Erzeugung einer Vorspannung die auch bei geschlossenem Brennstoffeinspritzventil vorhandene Restspannung der Rückstellfeder des Brennstoffeinspritzventils genutzt.Usually are piezoelectric and magnetostrictive actuators for the actuation of Fuel injectors for Fuel injection systems of internal combustion engines for avoidance of tensile and shear forces biased by a spring. Usually is used to generate a Preload that exists even when the fuel injector is closed Residual tension of the return spring of the fuel injector.
Beispielsweise
ist aus der
Nachteilig an dieser Bauform ist dabei insbesondere die Notwendigkeit, den Stapelaktor hohl zu gestalten, um den Zuganker in der Ausnehmung unterbringen zu können. Dadurch wird der Aktor noch beschädigungsanfälliger bei Montage und Betrieb.adversely What is particularly important about this design is that Hollow stack actuator to make the tie rod in the recess to be able to accommodate. This makes the actuator even more susceptible to damage during assembly and operation.
Vorteile der ErfindungAdvantages of invention
Die erfindungsgemäße Zugfeder für einen Aktor mit den Merkmalen des Hauptanspruchs hat demgegenüber den Vorteil, daß eine rechteckige oder quadratische Grundfläche eine einfache Herstellbarkeit des Aktors erlaubt, da das kristalline Material leichter in eine rechteckige als in eine runde Form zu bringen ist. Die Herstellung einer rechteckigen Zugfeder ist ebenfalls einfacher als die Herstellung einer runden Zugfeder.The Tension spring according to the invention for an actuator in contrast, with the features of the main claim Advantage that a rectangular or square base area easy to manufacture of the actuator, since the crystalline material is easier in a rectangular than is to be brought into a round shape. The production a rectangular tension spring is also easier than manufacturing a round tension spring.
Zudem ist durch die rechteckige Form eine bessere Anlage des Aktors an der Zugfeder und resultierend eine bessere Wärmeabfuhr der beim Betrieb des Aktors auftretenden Verlustwärme möglich.moreover Due to the rectangular shape, the actuator is better positioned the tension spring and resulting better heat dissipation during operation loss heat of the actuator possible.
Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der im Hauptanspruch gegebenen Zugfeder möglich.By those in the subclaims listed activities are advantageous developments and improvements in the main claim given tension spring possible.
Vorteilhafterweise ist die Zugfeder bügel- oder rohrförmig aus Flachmaterial durch Stanzen, Biegen und Schweißen herstellbar.advantageously, is the tension spring bracket or tubular Can be made from flat material by punching, bending and welding.
Weiterhin ist von Vorteil, daß eine Federkonstante der Zugfeder in einfacher Weise durch eine beliebige Anzahl und Anordnung von Ausnehmungen in den Seitenteilen der Zugfeder einstellbar ist.Farther is an advantage that a Spring constant of the tension spring in a simple manner by any Number and arrangement of recesses in the side parts of the tension spring is adjustable.
Zudem ist vorteilhaft, daß die Montage des Aktors in der Zugfeder in einfacher Weise durch Vormontage, Vorspannen und abschließendes Verschweißen der Grund- und/oder Deckplatte mit der Zugfeder erfolgen kann.moreover it is advantageous that the Assembly of the actuator in the tension spring in a simple way by pre-assembly, Preloading and final weld together the base and / or cover plate can be made with the tension spring.
Zeichnungdrawing
Ausführungsbeispiele der Erfindung sind in der Zeichnung vereinfacht dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen:embodiments the invention are shown in simplified form in the drawing and explained in more detail in the following description. Show it:
Beschreibung der Ausführungsbeispieledescription of the embodiments
Die
Ein
in
Der
Aktor
In
Die
erfindungsgemäße Zugfeder
Die
Zugfeder
Die
Zugfeder weist ebenfalls Ausnehmungen
Die
Montage des Aktors
Die
erfindungsgemäßen, im
Querschnitt rechteckigen Zugfedern
Die
erfindungsgemäß ausgestalteten
Zugfedern
Die Erfindung ist nicht auf die dargestellten Ausführungsbeispiele beschränkt und insbesondere bei einer Vielzahl von Bauweisen von Brennstoffeinspritzventilen anwendbar.The Invention is not limited to the illustrated embodiments and especially in a variety of fuel injector designs applicable.
Claims (19)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003121695 DE10321695A1 (en) | 2003-05-14 | 2003-05-14 | Tensile spring for piezoelectric or magnetostrictive actor actuating fuel injection valve in car fuel injection systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003121695 DE10321695A1 (en) | 2003-05-14 | 2003-05-14 | Tensile spring for piezoelectric or magnetostrictive actor actuating fuel injection valve in car fuel injection systems |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10321695A1 true DE10321695A1 (en) | 2004-12-02 |
Family
ID=33394582
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2003121695 Withdrawn DE10321695A1 (en) | 2003-05-14 | 2003-05-14 | Tensile spring for piezoelectric or magnetostrictive actor actuating fuel injection valve in car fuel injection systems |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10321695A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006035038A1 (en) * | 2006-07-28 | 2008-01-31 | Epcos Ag | Spring element for pre-loading of piezo actuator, comprises tube shape body of recesses, where recesses is formed in form of polygon with round corner |
WO2019140371A1 (en) * | 2018-01-15 | 2019-07-18 | Cts Corporation | Pre-loaded piezoelectric stack actuator |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19650900A1 (en) * | 1996-12-07 | 1998-06-10 | Bosch Gmbh Robert | Piezoelectric actuator |
WO2000008353A1 (en) * | 1998-08-06 | 2000-02-17 | Siemens Aktiengesellschaft | Piezoelectric actuator unit |
DE19939459A1 (en) * | 1999-08-20 | 2000-11-23 | Bosch Gmbh Robert | Hydraulic pressure source, especially in combustion engine, having externally controllable activation element in form of Piezo-electric actuator |
WO2003019688A2 (en) * | 2001-08-16 | 2003-03-06 | Robert Bosch Gmbh | Tubular hollow body for a piezo actuator module and method for production thereof |
DE10140197A1 (en) * | 2001-08-16 | 2003-03-13 | Bosch Gmbh Robert | Spring sleeve and method for producing a spring sleeve |
-
2003
- 2003-05-14 DE DE2003121695 patent/DE10321695A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19650900A1 (en) * | 1996-12-07 | 1998-06-10 | Bosch Gmbh Robert | Piezoelectric actuator |
WO2000008353A1 (en) * | 1998-08-06 | 2000-02-17 | Siemens Aktiengesellschaft | Piezoelectric actuator unit |
DE19939459A1 (en) * | 1999-08-20 | 2000-11-23 | Bosch Gmbh Robert | Hydraulic pressure source, especially in combustion engine, having externally controllable activation element in form of Piezo-electric actuator |
WO2003019688A2 (en) * | 2001-08-16 | 2003-03-06 | Robert Bosch Gmbh | Tubular hollow body for a piezo actuator module and method for production thereof |
DE10140197A1 (en) * | 2001-08-16 | 2003-03-13 | Bosch Gmbh Robert | Spring sleeve and method for producing a spring sleeve |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006035038A1 (en) * | 2006-07-28 | 2008-01-31 | Epcos Ag | Spring element for pre-loading of piezo actuator, comprises tube shape body of recesses, where recesses is formed in form of polygon with round corner |
US7859169B2 (en) | 2006-07-28 | 2010-12-28 | Epcos Ag | Spring element for pretensioning a piezoelectric actuator and piezoelectric actuator with the spring element |
WO2019140371A1 (en) * | 2018-01-15 | 2019-07-18 | Cts Corporation | Pre-loaded piezoelectric stack actuator |
US11165369B2 (en) | 2018-01-15 | 2021-11-02 | Cts Corporation | Pre-loaded piezoelectric stack actuator |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8110 | Request for examination paragraph 44 | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |