DE102010005160A1 - Actuator unit of use in fuel injecting valve for internal-combustion engine of motor vehicle, has connector pin including end section that is arranged outside recess adjacent to another connector pin and coupled with latter pin - Google Patents
Actuator unit of use in fuel injecting valve for internal-combustion engine of motor vehicle, has connector pin including end section that is arranged outside recess adjacent to another connector pin and coupled with latter pin Download PDFInfo
- Publication number
- DE102010005160A1 DE102010005160A1 DE201010005160 DE102010005160A DE102010005160A1 DE 102010005160 A1 DE102010005160 A1 DE 102010005160A1 DE 201010005160 DE201010005160 DE 201010005160 DE 102010005160 A DE102010005160 A DE 102010005160A DE 102010005160 A1 DE102010005160 A1 DE 102010005160A1
- Authority
- DE
- Germany
- Prior art keywords
- pin
- coupled
- actuator unit
- adapter element
- connector pin
- 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- Withdrawn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
- 238000002485 combustion reaction Methods 0.000 title description 6
- 239000000446 fuel Substances 0.000 title description 5
- 238000002347 injection Methods 0.000 claims description 21
- 239000007924 injection Substances 0.000 claims description 21
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 description 12
- 239000003344 environmental pollutant Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 210000003746 feather Anatomy 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
- F02D41/2096—Output circuits, e.g. for controlling currents in command coils for controlling piezoelectric injectors
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- 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
- F02M51/005—Arrangement of electrical wires and connections, e.g. wire harness, sockets, plugs; Arrangement of electronic control circuits in or on fuel injection apparatus
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- 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
Abstract
Description
Die Erfindung betrifft eine Aktoreinheit und ein Einspritzventil.The invention relates to an actuator unit and an injection valve.
Immer strengere gesetzliche Vorschriften bezüglich der zulässigen Schadstoffemission von Brennkraftmaschinen, die in Kraftfahrzeugen angeordnet sind, machen es erforderlich, diverse Maßnahmen vorzunehmen, durch welche die Schadstoffemissionen gesenkt werden. Ein Ansatzpunkt hierbei ist, die von der Brennkraftmaschine erzeugten Schadstoffemissionen zu senkenEver stricter legal regulations regarding the permissible pollutant emissions of internal combustion engines, which are arranged in motor vehicles, make it necessary to carry out various measures by which the pollutant emissions are reduced. One starting point here is to reduce the pollutant emissions generated by the internal combustion engine
Eine entsprechend geringe Schadstoffemission kann erreicht werden, wenn der Kraftstoff unter sehr hohem Druck zugemessen wird. Im Falle von Diesel-Brennkraftmaschinen betragen die Kraftstoffdrücke bis zu 2000 Bar. Derart hohe Drücke stellen hohe Anforderungen an die Konstruktion eines Einspritzventils. Gleichzeitig werden hohe Anforderungen an die Aktoreinheit für das Einspritzventil gestellt. Die Aktoreinheit kann starken mechanischen Belastungen ausgesetzt sein. Mechanische und elektrische Verbindungen der Aktoreinheit müssen deshalb sehr stabil ausgebildet sein.A correspondingly low pollutant emission can be achieved if the fuel is metered under very high pressure. In the case of diesel internal combustion engines, the fuel pressures are up to 2000 bar. Such high pressures make high demands on the design of an injection valve. At the same time, high demands are placed on the actuator unit for the injection valve. The actuator unit can be exposed to strong mechanical loads. Mechanical and electrical connections of the actuator unit must therefore be made very stable.
Die Aufgabe der Erfindung ist es, eine Aktoreinheit und ein Einspritzventil zu schaffen, die bzw. das einen zuverlässigen und präzisen Betrieb des Einspritzventils ermöglicht.The object of the invention is to provide an actuator unit and an injection valve, which enables a reliable and precise operation of the injection valve.
Die Aufgabe wird gelöst durch die Merkmale der unabhängigen Ansprüche. Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen gekennzeichnet.The object is solved by the features of the independent claims. Advantageous embodiments of the invention are characterized in the subclaims.
Gemäß eines ersten Aspekts zeichnet sich die Erfindung aus durch eine Aktoreinheit eines Einspritzventils, mit einem Piezoaktuator mit einer Längsachse, einem Grundkörper, der ausgebildet zum Herstellen eines mechanischen Abschlusses des Piezoaktuators, einem Adapterelement, das mit dem Grundkörper gekoppelt ist und das mindestens eine durchgehende Ausnehmung aufweist, mindestens einem ersten Anschlussstift, der mit dem Piezoaktuator elektrisch und mechanisch direkt gekoppelt und der in dem Grundkörper und in der durchgehenden Ausnehmung des Adapterelements in axialer Richtung angeordnet ist, und mindestens einem vollständig außerhalb des Adapterelements angeordneten zweiten Anschlussstift, der ausgebildet ist zur elektrischen Kopplung mit einer Spannungsquelle. Der erste Anschlussstift weist einen Endabschnitt auf, der außerhalb der durchgehenden Ausnehmung unmittelbar benachbart zu dem zweiten Anschlussstift angeordnet und direkt mit dem zweiten Anschlussstift gekoppelt ist.According to a first aspect, the invention is characterized by an actuator unit of an injection valve, comprising a piezoactuator with a longitudinal axis, a base body, which is designed to produce a mechanical closure of the piezoactuator, an adapter element which is coupled to the base body and the at least one continuous recess comprising at least a first terminal pin which is electrically and mechanically coupled directly to the piezoelectric actuator and which is arranged in the base body and in the through recess of the adapter element in the axial direction, and at least one completely outside the adapter element arranged second terminal pin, which is designed for electrical Coupling with a voltage source. The first terminal pin has an end portion disposed outside the through-hole immediately adjacent to the second pin and directly coupled to the second pin.
Der Erfindung liegt die Erkenntnis der Zusammenhänge bezüglich einem dynamischen Verhalten der Aktoreinheit zugrunde. Der Vorteil dieser Anordnung besteht darin, dass nur geringe Änderungen an dem hinsichtlich seiner Fertigung bewährten Adapterelement durchgeführt werden müssen, und dennoch aufgrund der Bewegung der Aktoreinheit auftretende dynamische Kräfte klein gehalten werden können. Insbesondere kann verhindert werden, dass der erste Anschlussstift fest mit dem Adapterelement gekoppelt ist. Dadurch kann erreicht werden, dass das Adapterelement keiner oder nur einen sehr geringen Anteil an dem dynamischen Verhalten der Aktoreinheit hat. Andererseits kann das Adapterelement jedoch in einfacher Weise zum Ausrichten des ersten Anschlussstifts bei einer Montage der Aktoreinheit beitragen.The invention is based on the knowledge of the relationships relating to a dynamic behavior of the actuator unit. The advantage of this arrangement is that only small changes to the proven in terms of its production adapter element must be performed, and yet due to the movement of the actuator occurring dynamic forces can be kept small. In particular, it can be prevented that the first pin is fixedly coupled to the adapter element. It can thereby be achieved that the adapter element has no or only a very small proportion of the dynamic behavior of the actuator unit. On the other hand, however, the adapter element can contribute in a simple manner to aligning the first connection pin during assembly of the actuator unit.
In einer vorteilhaften Ausbildung ist das Adapterelement fest mit dem Grundkörper gekoppelt.In an advantageous embodiment, the adapter element is fixedly coupled to the base body.
In einer weiteren vorteilhaften Ausbildung weist das Adapterelement einen Vorsprung auf, der in Eingriff mit dem Grundkörper ist. Dies hat den Vorteil, dass die Bewegung des Adapterelements sehr gering gehalten werden kann. Eine ballistische Anregung des Adapterelements kann so vermieden werden.In a further advantageous embodiment, the adapter element has a projection which is in engagement with the base body. This has the advantage that the movement of the adapter element can be kept very low. A ballistic excitation of the adapter element can be avoided.
Gemäß eines zweiten Aspekts zeichnet sich die Erfindung aus durch ein Einspritzventil mit einer Düsenbaugruppe und einer Aktoreinheit gemäß des ersten Aspekts der Erfindung. Die Aktoreinheit ist zum Einwirken auf die Düsenbaugruppe ausgebildet.According to a second aspect, the invention is characterized by an injection valve with a nozzle assembly and an actuator unit according to the first aspect of the invention. The actuator unit is designed to act on the nozzle assembly.
Ausführungsbeispiele der Erfindung sind im Folgenden anhand der schematischen Zeichnungen näher erläutert.Embodiments of the invention are explained in more detail below with reference to the schematic drawings.
Es zeigen:Show it:
Elemente gleicher Konstruktion oder Funktion sind figurenübergreifend mit den gleichen Bezugszeichen versehen.Elements of the same construction or function are provided across the figures with the same reference numerals.
Die Aktoreinheit
Die Düsenbaugruppe
Das Einspritzventil
Der Düsenkörper
Das Einspritzventil
Die
Die Aktoreinheit
Die elektrische Anschlussvorrichtung
Die elektrische Anschlussvorrichtung
Das Adapterelement
Im Folgenden soll die Funktion des Einspritzventils
Das Fluid wird von dem Fluideintritt
The fluid is from the
Beim Öffnen und Schließen des Einspritzventils
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201010005160 DE102010005160A1 (en) | 2010-01-20 | 2010-01-20 | Actuator unit of use in fuel injecting valve for internal-combustion engine of motor vehicle, has connector pin including end section that is arranged outside recess adjacent to another connector pin and coupled with latter pin |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201010005160 DE102010005160A1 (en) | 2010-01-20 | 2010-01-20 | Actuator unit of use in fuel injecting valve for internal-combustion engine of motor vehicle, has connector pin including end section that is arranged outside recess adjacent to another connector pin and coupled with latter pin |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102010005160A1 true DE102010005160A1 (en) | 2011-07-21 |
Family
ID=44314001
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE201010005160 Withdrawn DE102010005160A1 (en) | 2010-01-20 | 2010-01-20 | Actuator unit of use in fuel injecting valve for internal-combustion engine of motor vehicle, has connector pin including end section that is arranged outside recess adjacent to another connector pin and coupled with latter pin |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102010005160A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017144313A1 (en) * | 2016-02-24 | 2017-08-31 | Delphi International Operations Luxembourg S.À R.L. | Fuel injector |
-
2010
- 2010-01-20 DE DE201010005160 patent/DE102010005160A1/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017144313A1 (en) * | 2016-02-24 | 2017-08-31 | Delphi International Operations Luxembourg S.À R.L. | 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 |
Effective date: 20120801 |