DE102014217755A1 - Actuator device for sliding cam systems - Google Patents
Actuator device for sliding cam systems Download PDFInfo
- Publication number
- DE102014217755A1 DE102014217755A1 DE102014217755.3A DE102014217755A DE102014217755A1 DE 102014217755 A1 DE102014217755 A1 DE 102014217755A1 DE 102014217755 A DE102014217755 A DE 102014217755A DE 102014217755 A1 DE102014217755 A1 DE 102014217755A1
- Authority
- DE
- Germany
- Prior art keywords
- plunger
- control unit
- sliding cam
- electromagnetic control
- actuator device
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
- F01L1/053—Camshafts overhead type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/16—Rectilinearly-movable armatures
- H01F7/1607—Armatures entering the winding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
- F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
- F01L2013/0052—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction with cams provided on an axially slidable sleeve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L2013/10—Auxiliary actuators for variable valve timing
- F01L2013/101—Electromagnets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/16—Rectilinearly-movable armatures
- H01F2007/1692—Electromagnets or actuators with two coils
Abstract
Vorgeschlagen ist eine Aktorvorrichtung mit einem maschinenfesten Gehäuse (1) für Schiebenockensysteme zur Verstellung eines Schiebenockens in unterschiedliche axiale Positionen mittels zumindest eines in zumindest eine Verschiebenut am Umfang des Schiebenockens eingreifbaren Aktorstiftes (2), der unter Einwirkung eines Federelements (3) und/oder einer elektromagnetischen Steuereinheit (4) direkt oder unter Zwischenschaltung eines Übertragungsmechanismus durch einen Stößel (6) verschiebbar ausgebildet ist, wobei der Schiebenocken auf zumindest einer axial festgelegten Grundwelle einer Hubkolbenbrennkraftmaschine zur Bildung einer Nockenwelle drehfest, aber axial verschiebbar angeordnet ist, und wobei der Stößel (6) oder der Aktorstift (2), zumindest dann, wenn sie in die elektromagnetische Steuereinheit (4) integriert sind, aus einem harten, magnetisch schlecht leitendem Werkstoff hergestellt sind.Proposed is an actuator device with a machine-fixed housing (1) for sliding cam systems for adjusting a sliding cam in different axial positions by means of at least one engageable in at least one sliding groove on the circumference of the sliding cam Aktorstiftes (2) under the action of a spring element (3) and / or a Electromagnetic control unit (4) is designed to be displaceable directly or with the interposition of a transmission mechanism by a plunger (6), wherein the slide cam on at least one axially fixed fundamental shaft of a reciprocating internal combustion engine for forming a camshaft rotatably but axially displaceably arranged, and wherein the plunger (6 ) or the actuator pin (2), at least when they are integrated in the electromagnetic control unit (4) are made of a hard, magnetically poorly conductive material.
Description
Die Erfindung bezieht sich auf eine Aktorvorrichtung mit einem maschinenfesten Gehäuse für Schiebenockensysteme zur Verstellung eines Schiebenockens in unterschiedliche axiale Positionen mittels zumindest eines in zumindest eine Verschiebenut am Umfang des Schiebenockens eingreifbaren Aktorstiftes, der unter Einwirkung eines Federelements und/oder einer elektromagnetischen Steuereinheit direkt oder unter Zwischenschaltung eines Übertragungsmechanismus durch einen Stößel verschiebbar ausgebildet ist, wobei der Schiebenocken auf zumindest einer axial festgelegten Grundwelle einer Hubkolbenbrennkraftmaschine zur Bildung einer Nockenwelle drehfest, aber axial verschiebbar angeordnet ist.The invention relates to an actuator device with a machine-fixed housing for sliding cam systems for adjusting a sliding cam in different axial positions by means of at least one engageable in at least one sliding groove on the circumference of the sliding cam Aktorstiftes under the action of a spring element and / or an electromagnetic control unit directly or with interposition a transmission mechanism is slidably formed by a plunger, wherein the sliding cam on at least one axially fixed fundamental shaft of a reciprocating internal combustion engine for forming a camshaft rotationally fixed, but axially displaceable is arranged.
Derartige Aktorvorrichtungen für Schiebenockensysteme sind inzwischen allgemein bekannt. Bei der
Aufgabe der Erfindung ist es, ein Schiebenockensystem der eingangs beschriebenen Art so zu verbessern, dass die genannten Nachteile behoben werden und eine deutliche Verringerung des Verschleißes am Stößel oder Aktorstift gegeben ist. Dies soll mit einfachen kostengünstigen Mitteln erreicht werden.The object of the invention is to improve a sliding cam system of the type described above so that the disadvantages mentioned are eliminated and a significant reduction in the wear on the plunger or Aktorstift is given. This should be achieved with simple inexpensive means.
Erfindungsgemäß wird diese Aufgabe dadurch gelöst, dass der Stößel oder der Aktorstift, zumindest dann, wenn sie in die elektromagnetische Steuereinheit integriert sind, aus einem harten, magnetisch schlecht leitenden Werkstoff hergestellt sind. Dies führt zwar dazu, dass der Wirkungsgrad der elektromagnetischen Steuereinheit schlechter ist als bei nicht leitenden weichen Werkstoffen, es verringert aber den Verschleiß erheblich.According to the invention, this object is achieved in that the plunger or the Aktorstift, at least when they are integrated into the electromagnetic control unit, are made of a hard, magnetically poorly conductive material. Although this leads to the fact that the efficiency of the electromagnetic control unit is worse than non-conductive soft materials, but it reduces the wear considerably.
Zur Verbesserung des Wirkungsgrades wird vorgeschlagen, dass zwischen dem Stößel oder dem Aktorstift und der Stößel- oder Aktorstiftführung, zumindest dann, wenn sie in den Magnetfluss der Feldlinien integriert sind, ein Luftspalt vorgesehen ist. Dieser verringert die Integration des Stößels oder Aktorstiftes in die Feldlinien und verbessert den Wirkungsgrad.To improve the efficiency, it is proposed that an air gap is provided between the plunger or the actuator pin and the plunger or Aktorstiftführung, at least when they are integrated into the magnetic flux of the field lines. This reduces the integration of the ram or actuator pin in the field lines and improves the efficiency.
Weiterhin wird vorgeschlagen, dass das dem Anker der elektromagnetischen Steuereinheit zugewandte Ende des Stößels oder Aktorstiftes abgerundet ausgeführt ist. Das Ende kann beispielsweise halbkugelförmig ausgebildet sein. Es ist auch vorteilhaft, wenn das Ende kegelig oder kegelstumpfförmig ausgeführt ist. Dies dient ebenfalls der Verbesserung des Wirkungsgrades der elektromagnetischen Steuereinheit.Furthermore, it is proposed that the armature of the electromagnetic control unit facing the end of the plunger or Aktorstiftes is executed rounded. The end may be formed, for example, hemispherical. It is also advantageous if the end is conical or frusto-conical. This also serves to improve the efficiency of the electromagnetic control unit.
Die Erfindung ist in den Zeichnungen beschrieben:The invention is described in the drawings:
In den
An den inneren Enden der Aktorstifte
Den
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Gehäusecasing
- 22
- AktorstifteAktorstifte
- 33
- Federelementespring elements
- 44
- elektromagnetische Steuereinheitelectromagnetic control unit
- 55
- Wippenbob
- 66
- Stößeltappet
- 77
- Stößelführungenram guides
- 88th
- Ankeranchor
- 99
- SpulenDo the washing up
- 1010
- Jocheyokes
- 1111
- Luftspaltair gap
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 102007037232 A1 [0002] DE 102007037232 A1 [0002]
- WO 2014/075667 A1 [0002] WO 2014/075667 A1 [0002]
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014217755.3A DE102014217755A1 (en) | 2014-09-05 | 2014-09-05 | Actuator device for sliding cam systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014217755.3A DE102014217755A1 (en) | 2014-09-05 | 2014-09-05 | Actuator device for sliding cam systems |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102014217755A1 true DE102014217755A1 (en) | 2016-03-10 |
Family
ID=55358402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102014217755.3A Pending DE102014217755A1 (en) | 2014-09-05 | 2014-09-05 | Actuator device for sliding cam systems |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102014217755A1 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007037232A1 (en) | 2007-08-07 | 2009-02-12 | Eto Magnetic Gmbh | Device for adjusting the camshaft of an internal combustion engine |
WO2014075667A1 (en) | 2012-11-15 | 2014-05-22 | Schaeffler Technologies AG & Co. KG | Actuator apparatus for adjusting a sliding cam system |
-
2014
- 2014-09-05 DE DE102014217755.3A patent/DE102014217755A1/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007037232A1 (en) | 2007-08-07 | 2009-02-12 | Eto Magnetic Gmbh | Device for adjusting the camshaft of an internal combustion engine |
WO2014075667A1 (en) | 2012-11-15 | 2014-05-22 | Schaeffler Technologies AG & Co. KG | Actuator apparatus for adjusting a sliding cam system |
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R012 | Request for examination validly filed |