DE19947071B4 - Noise-damped actuator unit - Google Patents
Noise-damped actuator unit Download PDFInfo
- Publication number
- DE19947071B4 DE19947071B4 DE19947071A DE19947071A DE19947071B4 DE 19947071 B4 DE19947071 B4 DE 19947071B4 DE 19947071 A DE19947071 A DE 19947071A DE 19947071 A DE19947071 A DE 19947071A DE 19947071 B4 DE19947071 B4 DE 19947071B4
- Authority
- DE
- Germany
- Prior art keywords
- actuator
- housing
- actuator housing
- vibration damping
- injector
- 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
Links
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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0014—Valves characterised by the valve actuating means
- F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
- F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators
-
- 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
- F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
- F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
- F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
-
- 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
-
- 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
-
- 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
- F02M2200/70—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
- F02M2200/701—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger mechanical
-
- 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
- F02M61/166—Selection of particular materials
Abstract
Aktoreinheit mit einem Aktor (2) und einem den Aktor umgebenden Aktorgehäuse (25), wobei das Aktorgehäuse (25) form- und/oder kraftschlüssig mit dem Aktor verbunden ist, dadurch gekennzeichnet, daß an einer Kontaktfläche des Aktorgehäuses (25) mit einem das Aktorgehäuse aufnehmenden Injektorkörper (1) ein Element (13; 270; 51) aus einem Werkstoff mit schwingungsdämpfenden Eigenschaften vorgesehen ist und daß der Werkstoff mit schwingungsdämpfenden Eigenschaften Graphit oder Teflon ist.actuator with an actuator (2) and an actuator housing (25) surrounding the actuator, wherein the actuator housing (25) form and / or force fit is connected to the actuator, characterized in that at a contact area of the actuator housing (25) with a the actuator housing receiving injector body (1) a member (13; 270; 51) made of a material with vibration damping Characteristics is provided and that the material with vibration damping Properties graphite or Teflon is.
Description
Die
Erfindung betrifft eine Aktoreinheit mit einem piezoelektrischen
Aktor gemäß dem Oberbegriff des
Anspruchs 1. Eine solche Aktoreinheit ist zum Beispiel in der
Aus
Aus
Aus
Bei der Kraftstoffversorgung von Brennkraftmaschinen werden zunehmend Speichereinspritzsysteme eingesetzt, bei denen mit sehr hohen Einspritzdrücken und schnellen Schaltgeschwindigkeiten gearbeitet wird. Bei diesen Speichereinspritzsystemen wird Kraftstoff mit Hilfe von Kraftstoffinjektoren in die Brennkraftmaschine eingespritzt. Der Kraftstoffinjektor weist im allgemeinen eine Einspritzdüse auf, die hydraulisch von einem Servoventil geöffnet und geschlossen wird, um den zeitlichen Verlauf des Einspritzvorgangs in die Brennkammer genau festzulegen. Das Servoventil wird dabei von einem elektrisch angesteuerten Aktor betätigt, wobei sich vor allem der Einsatz von piezoelektrischen Aktoren zum Erzielen ausreichend kurzer Schaltzeiten als vorteilhaft erwiesen hat. In einem solchen piezoelektrischen Aktor wird durch Anlegen von Spannung eine Längsdehnung hervorgerufen, die auf das Servoventil übertragen wird, das dann wiederum die Einspritzdüse öffnet oder schließt.at the fuel supply of internal combustion engines are increasing Memory injection systems used in which with very high injection pressures and fast switching speeds is worked. In these storage injection systems Fuel is in the internal combustion engine with the help of fuel injectors injected. The fuel injector generally has an injection nozzle, which is hydraulically opened and closed by a servo valve to the timing of the injection process in the combustion chamber to specify exactly. The servo valve is doing by an electric operated actuator actuated, especially the use of piezoelectric actuators to achieve sufficiently short switching times has proven to be advantageous. In Such a piezoelectric actuator is by applying voltage a longitudinal strain caused, which is transmitted to the servo valve, which in turn the injector opens or closes.
Die extrem schnellschaltenden piezoelektrischen Aktoren mit Schaltzeiten im Bereich von unter 200 μs lösen jedoch hochfrequente mechanische Schwingungen in dem den Piezoaktor umgebenden Gehäuse aus, die sich entlang des Injektorkörpers fortpflanzen und in den Zylinderkopf der Brennkraftmaschine eingeleitet werden. Diese auf den Injektorkörper und den Zylinderkopf übertragenen Schwingungen führen zu einer erheblichen Geräuschbelastung und beeinflussen so negativ den Fahrkomfort.The extremely fast switching piezoelectric actuators with switching times in the range of less than 200 μs solve however high-frequency mechanical vibrations in the housing surrounding the piezoelectric actuator, which propagate along the injector body and be introduced into the cylinder head of the internal combustion engine. This on the injector body and transferred the cylinder head Cause vibrations to a considerable noise pollution and so negatively affect the ride comfort.
Aus
der
Aufgabe der vorliegenden Erfindung ist es deshalb eine Aktoreinheit bereitzustellen, bei der auf kostengünstige und platzsparende Weise eine weitgehende Kompensation der Geräuschemission erreicht wird.task It is therefore an object of the present invention to provide an actuator unit, at the low cost and space-saving way a substantial compensation of the noise emission is reached.
Diese Aufgabe wird durch eine Aktoreinheit gemäß Anspruch 1 gelöst. Bevorzugte Ausführungsformen sind in den abhängigen Ansprüchen angegeben.These The object is achieved by an actuator unit according to claim 1. preferred embodiments are in the dependent claims specified.
Bei der erfindungsgemäßen Aktoreinheit ist in einem Kontaktbereich zwischen einem den Aktor aufnehmenden Gehäuse und einem Injektorkörper ein Element aus einem Werkstoff mit schwingungsdämpfenden Eigenschaften vorgesehen. Schallemissionsmessungen bei Aktoreinheiten haben nämlich gezeigt, daß die vom Aktor auf das mit dem Aktor verbundene Gehäuse übertragenen hochfrequenten mechanischen Schwingungen, die sich auf den Injektorkörper fortpflanzen, die entscheidende Geräuschquelle darstellt. Durch die schwingungsmäßige Abkopplung des Aktorgehäuses vom Injektorkörper mittels eines zwischengeschalteten schwingungsdämpfenden Elements wird verhindert, daß der Injektorkörper vom Aktorgehäuse zu Schwingungen angeregt wird, die an der Oberfläche des Injektorkörpers zu Störgeräuschen führen könnten.In the actuator unit according to the invention, an element made of a material with vibration-damping properties is provided in a contact area between a housing accommodating the actuator and an injector body. Schallemis In fact, ion measurements in actuator units have shown that the high-frequency mechanical oscillations transmitted by the actuator to the housing connected to the actuator, which propagate onto the injector body, represent the decisive noise source. The vibration decoupling of the actuator housing from the injector body by means of an intermediate vibration-damping element prevents the injector body is excited by the actuator housing to vibrations that could lead to noise on the surface of the injector body.
Die Erfindung wird anhand der Zeichnungen näher erläutert. Es zeigen:The The invention will be explained in more detail with reference to the drawings. Show it:
In
Zum
Ansteuern der piezoelektrischen Einzelelemente
Der
piezoelektrische Aktor
Das
Aktorgehäuse
Das
Aktorgehäuse
Auf
der Bodenplatte
Die
durch Elektrostriktion erzeugten Längsdehnungen des piezoelektrischen
Aktors
Durch
den Einsatz des piezoelektrischen Aktors
Die
abgeschrägte
Ausführung
des Aktorgehäuses
Ergänzend zu
den in den
Claims (5)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19947071A DE19947071B4 (en) | 1999-09-30 | 1999-09-30 | Noise-damped actuator unit |
IT2000MI002109A IT1318944B1 (en) | 1999-09-30 | 2000-09-29 | ACTUATING UNIT WITH LOW NOISE |
FR0012518A FR2799239B1 (en) | 1999-09-30 | 2000-10-02 | OPERATING UNIT WITH NOISE AMORTI |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19947071A DE19947071B4 (en) | 1999-09-30 | 1999-09-30 | Noise-damped actuator unit |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19947071A1 DE19947071A1 (en) | 2001-05-10 |
DE19947071B4 true DE19947071B4 (en) | 2006-07-27 |
Family
ID=7923981
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19947071A Expired - Fee Related DE19947071B4 (en) | 1999-09-30 | 1999-09-30 | Noise-damped actuator unit |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE19947071B4 (en) |
FR (1) | FR2799239B1 (en) |
IT (1) | IT1318944B1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1473460B1 (en) * | 1999-10-15 | 2007-09-12 | Westport Power Inc. | Directly actuated injection valve |
DE10132756B4 (en) * | 2001-07-10 | 2005-01-27 | L'orange Gmbh | Actuator for switching elements of fuel injectors |
DE102006009094A1 (en) * | 2006-02-28 | 2007-08-30 | Bayerische Motoren Werke Ag | Damper for use between cylinder head and injector in region of injector foot, has sub-functional section e.g. inner ring and outer ring, for fixing injector with respect to cylinder head, where damper is formed as multipart structure |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3345352C2 (en) * | 1983-12-15 | 1991-06-27 | Telefunken Systemtechnik Gmbh, 7900 Ulm, De | |
DE3844134C2 (en) * | 1987-12-29 | 1992-02-20 | Toyota Jidosha K.K., Toyota, Aichi, Jp | |
DE19712921A1 (en) * | 1997-03-27 | 1998-10-01 | Bosch Gmbh Robert | Fuel injector with piezoelectric or magnetostrictive actuator |
DE19715487A1 (en) * | 1997-04-14 | 1998-10-22 | Siemens Ag | Piezoelectric actuator with a hollow profile |
DE19708781C2 (en) * | 1996-03-05 | 1999-07-01 | Tochigi Fuji Sangyo Kk | Spheroidal graphite cast component and method for manufacturing same |
-
1999
- 1999-09-30 DE DE19947071A patent/DE19947071B4/en not_active Expired - Fee Related
-
2000
- 2000-09-29 IT IT2000MI002109A patent/IT1318944B1/en active
- 2000-10-02 FR FR0012518A patent/FR2799239B1/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3345352C2 (en) * | 1983-12-15 | 1991-06-27 | Telefunken Systemtechnik Gmbh, 7900 Ulm, De | |
DE3844134C2 (en) * | 1987-12-29 | 1992-02-20 | Toyota Jidosha K.K., Toyota, Aichi, Jp | |
DE19708781C2 (en) * | 1996-03-05 | 1999-07-01 | Tochigi Fuji Sangyo Kk | Spheroidal graphite cast component and method for manufacturing same |
DE19712921A1 (en) * | 1997-03-27 | 1998-10-01 | Bosch Gmbh Robert | Fuel injector with piezoelectric or magnetostrictive actuator |
DE19715487A1 (en) * | 1997-04-14 | 1998-10-22 | Siemens Ag | Piezoelectric actuator with a hollow profile |
Also Published As
Publication number | Publication date |
---|---|
ITMI20002109A0 (en) | 2000-09-29 |
FR2799239A1 (en) | 2001-04-06 |
IT1318944B1 (en) | 2003-09-19 |
DE19947071A1 (en) | 2001-05-10 |
FR2799239B1 (en) | 2006-02-10 |
ITMI20002109A1 (en) | 2002-03-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0954037A1 (en) | Piezoelectric device for an actuator | |
EP1647703B1 (en) | Actuator module | |
DE102009029219A1 (en) | Fuel high pressure storage device for use in fuel injection system, particularly for diesel internal combustion engines, comprises storage element for fuel, in which borehole is formed in longitudinal axis | |
EP1336045B1 (en) | Injector housing with an actuator and intermediate damping disc | |
WO2008086777A1 (en) | Apparatus for suppressing eigen resonances in a hydraulic path | |
DE102014211952A1 (en) | Hydro bearing and motor vehicle with such a hydraulic bearing | |
DE19947071B4 (en) | Noise-damped actuator unit | |
EP1948923A1 (en) | High pressure fuel injector | |
DE3916539A1 (en) | Movement and pressure transmission unit - with substitution of elastomer for gas liquid | |
EP1433209B1 (en) | Actuator unit comprising at least two actuator elements | |
DE19947079B4 (en) | Silenced actuator for a fuel injector | |
DE10040239B4 (en) | Noise-damped actuator unit | |
DE19946965B4 (en) | Noise-damped actuator unit with a piezo element | |
EP1190168B1 (en) | Actuator | |
DE10132756B4 (en) | Actuator for switching elements of fuel injectors | |
EP2547895B1 (en) | Fuel injector | |
DE19858476B4 (en) | Device for transmitting an Aktorauslenkung on an actuator and injector with such a device | |
DE19947067A1 (en) | Noise-damped actuator unit with actuator element for common rail fuel injection valve | |
DE3016421A1 (en) | Elastic engine bearer with hydraulic damping - has variable volume chamber formed by rubber balloon inside inner member | |
EP1167808A2 (en) | Elastomeric mounting | |
DE102004053040A1 (en) | Internal combustion engine with fuel injector for motor vehicle has cylinder head along with fuel injector between which damping elements are arranged for damping of oscillations | |
EP1528607B1 (en) | Actuator module | |
WO2006032557A1 (en) | Fuel-injection valve | |
DE10260349B4 (en) | Fuel injector | |
DE102005029471B4 (en) | Method for producing a hollow cylindrical spring |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: CONTINENTAL AUTOMOTIVE GMBH, 30165 HANNOVER, DE |
|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20140401 |