DE102012211858A1 - Actuator device for sliding cam system of lifting cylinder combustion engine, has shift groove contacting with pin according extraction movement of pin and contact surface exhibiting cladding provided with hard-wearing layer - Google Patents
Actuator device for sliding cam system of lifting cylinder combustion engine, has shift groove contacting with pin according extraction movement of pin and contact surface exhibiting cladding provided with hard-wearing layer Download PDFInfo
- Publication number
- DE102012211858A1 DE102012211858A1 DE201210211858 DE102012211858A DE102012211858A1 DE 102012211858 A1 DE102012211858 A1 DE 102012211858A1 DE 201210211858 DE201210211858 DE 201210211858 DE 102012211858 A DE102012211858 A DE 102012211858A DE 102012211858 A1 DE102012211858 A1 DE 102012211858A1
- Authority
- DE
- Germany
- Prior art keywords
- pin
- actuator device
- wear
- contact
- contact surface
- 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.)
- Ceased
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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
- 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
-
- 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
- F01L2001/0471—Assembled camshafts
- F01L2001/0473—Composite camshafts, e.g. with cams or cam sleeve being able to move relative to the inner camshaft or a cam adjusting rod
-
- 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
- F01L2820/00—Details on specific features characterising valve gear arrangements
- F01L2820/03—Auxiliary actuators
- F01L2820/031—Electromagnets
Abstract
Description
Gebiet der ErfindungField of the invention
Aktorvorrichtung für ein Schiebenockensystem mit Schiebenocken, die auf einer Grundwelle drehfest aber axial verschiebbar angeordnet sind, mit zumindest einem aus einem Gehäuse heraus bewegbaren Aktorstift, wobei die Aktorvorrichtung an einem Bauteil eines Zylinderkopfes oder an dem Zylinderkopf einer Brennkraftmaschine befestigbar ist und der Aktorstift nach seiner Herausbewegung aus dem Gehäuse mittels zumindest einer Kontaktfläche mit zumindest einer Verschiebenut eines Schiebenockens in Verbindung tritt. Actuator device for a sliding cam system with sliding cam, which are rotatably mounted on a basic shaft but axially displaceable, with at least one movable out of a housing Aktorstift, wherein the Aktorvorrichtung on a component of a cylinder head or on the cylinder head of an internal combustion engine can be fastened and the Aktorstift after its movement out from the housing by means of at least one contact surface with at least one sliding groove of a sliding cam occurs in connection.
Hintergrund der ErfindungBackground of the invention
Eine derartige Aktorvorrichtung eines Schiebenockensystems für eine Hubkolbenbrennkraftmaschine ist aus der
Aufgabe der ErfindungObject of the invention
Aufgabe der Erfindung ist es daher, die Aktorvorrichtung so auszubilden und zu verbessern, dass die hohe Belastung an dem Aktorstift dauerhaft ohne Schäden aufgenommen werden kann. Dies soll mit einfachen und kostengünstigen Mitteln erfolgen. The object of the invention is therefore to design and improve the actuator device so that the high load on the actuator pin can be taken permanently without damage. This should be done with simple and inexpensive means.
Zusammenfassung der ErfindungSummary of the invention
Die Aufgabe der Erfindung wird dadurch gelöst, dass der die Kontaktflächen aufweisende Kontaktmantel mit einer verschleißfesten Schicht versehen ist. Der Begriff „verschleißfeste Schicht“ wird bewusst weit gefasst, weil dem Fachmann verschiedenartige verschleißfeste Schichten zur Verfügung stehen. Es gibt galvanisch aufgebrachte Beschichtungen, die verschiedene metallisch aufgebrachte Werkstoffe beinhalten. Der Kontaktmantel kann beispielsweise verchromt sein oder es können harte Teilchen, beispielsweise Siliciumcarbidteilchen, eingepresst werden. Die Schicht sollte aber nicht aggressiv wirken und die Seitenwand der Verschiebenut unnötig negativ beeinflussen. Die Seitenwand der Verschiebenut ist deshalb nicht so gefährdet, weil sich die Reibfläche zwischen der Seitenwand und dem Aktorstift auf eine relativ große Fläche verteilt. The object of the invention is achieved in that the contact surfaces having contact jacket is provided with a wear-resistant layer. The term "wear-resistant layer" is deliberately broad because a variety of wear-resistant layers are available to the person skilled in the art. There are electroplated coatings containing various metallic materials. The contact jacket may, for example, be chrome-plated or hard particles, for example silicon carbide particles, may be pressed in. However, the layer should not act aggressively and unnecessarily adversely affect the side wall of the sliding groove. The side wall of the sliding groove is therefore not at risk because the friction surface between the side wall and the Aktorstift distributed over a relatively large area.
In weiterer Ausgestaltung der Erfindung wird vorgeschlagen, dass die verschleißfeste Schicht als DLC(Diamant Like Carbon)-Schicht ausgebildet ist. Die DLC-Schicht ist ein Akronym für eine diamantähnliche Kohlenstoff-Schicht, die überwiegend aus dem chemischen Element Kohlenstoff besteht. Es handelt sich um dünne Schichten, durch die sich vielfältige Oberflächenfunktionen, vor allem im Bereich der Tribologie, realisieren lassen. Weitere Informationen zu den DLC-Schichten können der VDI 2840 entnommen werden. In a further embodiment of the invention, it is proposed that the wear-resistant layer is formed as a DLC (diamond like carbon) layer. The DLC layer is an acronym for a diamond-like carbon layer that consists predominantly of the chemical element carbon. These are thin layers that can be used to realize a variety of surface functions, especially in the field of tribology. Further information on the DLC layers can be found in the VDI 2840.
In weiterer Ausgestaltung der Erfindung wird vorgeschlagen, dass der Aktorstift mit einer verschleißfesten Schicht versehen ist, wobei es im Wesentlichen darauf ankommt, dass der gesamte Mantel des Aktorstiftes mit der verschleißfesten Schicht versehen ist.In a further embodiment of the invention, it is proposed that the actuator pin is provided with a wear-resistant layer, wherein it essentially depends on the fact that the entire jacket of Aktorstiftes is provided with the wear-resistant layer.
Da beim Verschieben des Verschiebenockens durch Eingriff des Aktorstiftes in die Verschiebenut eine erhebliche Querkraft auf den Aktorstift erzeugt wird und der Aktorstift eine Kippbewegung ausführt, wird vorgeschlagen, dass der Kontaktmantel des Aktorstiftes profiliert ausgeführt ist. Er kann z.B. tonnenförmig oder kugelförmig ausgeführt sein, er kann aber auch einen Kegelmantel aufweisen, dessen Spitze weg von den Schiebenocken liegt. Die Profilierung ist dabei so gestaltet, dass der Aktorstift im gekippten Zustand eine möglichst große Kontaktfläche bzw. eine möglichst lange Kontaktlinie mit der Seitenwand der Verschiebenut bildet. Since a considerable lateral force is generated on the Aktorstift when moving the shift cam by engaging the Aktorstiftes in the sliding groove and the Aktorstift performs a tilting movement, it is proposed that the contact jacket of Aktorstiftes is profiled executed. He can e.g. be executed barrel-shaped or spherical, but it may also have a conical surface, the tip of which lies away from the sliding cam. The profiling is designed so that the actuator pin in the tilted state forms the largest possible contact surface or the longest possible contact line with the side wall of the sliding groove.
Je nach Art der verschleißfesten Schicht kann es vorteilhaft sein, zwischen der verschleißfesten Schicht und dem Kontaktmantel oder dem kompletten Aktorstift eine die Haftung verbessernde Zwischenschicht aufzubringen. Dadurch kann der verschleißfesten Schicht ein besserer Halt oder eine bessere Haftung auf dem Aktorstift erzeugt werden. Depending on the type of wear-resistant layer, it may be advantageous to apply an adhesion-improving intermediate layer between the wear-resistant layer and the contact jacket or the complete actuator pin. As a result, the wear-resistant layer can be produced better grip or better adhesion to the actuator pin.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Zur weiteren Erläuterung der Erfindung wird auf die Zeichnungen verwiesen, in denen Ausführungsbeispiele der Erfindung vereinfacht dargestellt sind.For further explanation of the invention reference is made to the drawings, in which embodiments of the invention are shown in simplified form.
Es zeigen: Show it:
Detaillierte Beschreibung der ZeichnungenDetailed description of the drawings
In den
Wie den
Wie in den
In
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Gehäuse casing
- 22
- Führungshülsen guide sleeves
- 33
- Aktorstifte Aktorstifte
- 44
- Arretiernadeln Arretiernadeln
- 55
- Federn feathers
- 66
- Kontaktmantel Contact coat
- 77
- Verschiebenut shift groove
- 88th
- Verschiebenocken displacement cam
- 99
- verschleißfeste Schicht wear-resistant layer
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 102009009080 A1 [0002] DE 102009009080 A1 [0002]
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201210211858 DE102012211858A1 (en) | 2012-07-06 | 2012-07-06 | Actuator device for sliding cam system of lifting cylinder combustion engine, has shift groove contacting with pin according extraction movement of pin and contact surface exhibiting cladding provided with hard-wearing layer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201210211858 DE102012211858A1 (en) | 2012-07-06 | 2012-07-06 | Actuator device for sliding cam system of lifting cylinder combustion engine, has shift groove contacting with pin according extraction movement of pin and contact surface exhibiting cladding provided with hard-wearing layer |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102012211858A1 true DE102012211858A1 (en) | 2014-01-09 |
Family
ID=49780722
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE201210211858 Ceased DE102012211858A1 (en) | 2012-07-06 | 2012-07-06 | Actuator device for sliding cam system of lifting cylinder combustion engine, has shift groove contacting with pin according extraction movement of pin and contact surface exhibiting cladding provided with hard-wearing layer |
Country Status (1)
Country | Link |
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DE (1) | DE102012211858A1 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009009080A1 (en) | 2009-02-14 | 2010-08-19 | Schaeffler Technologies Gmbh & Co. Kg | Valve gear of an internal combustion engine |
-
2012
- 2012-07-06 DE DE201210211858 patent/DE102012211858A1/en not_active Ceased
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009009080A1 (en) | 2009-02-14 | 2010-08-19 | Schaeffler Technologies Gmbh & Co. Kg | Valve gear of an internal combustion engine |
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Legal Events
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R012 | Request for examination validly filed | ||
R081 | Change of applicant/patentee |
Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES AG & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20140211 Owner name: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES AG & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20140211 |
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Effective date: 20140312 |
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R081 | Change of applicant/patentee |
Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20150123 |
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R003 | Refusal decision now final |