EP1994262A1 - Adjustment device for a camshaft - Google Patents

Adjustment device for a camshaft

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Publication number
EP1994262A1
EP1994262A1 EP07712206A EP07712206A EP1994262A1 EP 1994262 A1 EP1994262 A1 EP 1994262A1 EP 07712206 A EP07712206 A EP 07712206A EP 07712206 A EP07712206 A EP 07712206A EP 1994262 A1 EP1994262 A1 EP 1994262A1
Authority
EP
European Patent Office
Prior art keywords
friction lining
brake system
camshaft
adjusting device
friction
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.)
Granted
Application number
EP07712206A
Other languages
German (de)
French (fr)
Other versions
EP1994262B1 (en
Inventor
Frank Richter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZF Friedrichshafen AG
Original Assignee
ZF Friedrichshafen AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Publication of EP1994262A1 publication Critical patent/EP1994262A1/en
Application granted granted Critical
Publication of EP1994262B1 publication Critical patent/EP1994262B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/352—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using bevel or epicyclic gear
    • 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
    • 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
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • 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
    • F01L2810/00—Arrangements solving specific problems in relation with valve gears
    • F01L2810/02—Lubrication
    • 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
    • F01L2820/01—Absolute values
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2101—Cams
    • Y10T74/2102—Adjustable

Definitions

  • the present invention relates to an adjusting device for a camshaft, according to the preamble of patent claim 1.
  • the design of the adjusting device allows any phase angle between the drive element and the driven element.
  • the brake is designed as bermmungsios working, electromagnetic brake; Preferably, a hysteresis brake is used whose braking torque is independent of the speed.
  • the present invention is therefore based on the object to provide a Versfeilvortechnische for a camshaft, which is inexpensive to produce. This object is solved by the features of patent claim 1. Further embodiments and advantages of the invention will become apparent from the dependent claims,
  • an adjusting device for a camshaft comprising a braking system and an output side connected to the camshaft and the crankshaft drive side ⁇ berlagerungsgetriebe, wherein the superposition gear for adjusting the camshaft dissipates a part of the drive-side energy in the brake system, wherein the brake system is designed as a frictional braking system in which the required braking force is generated via a friction lining in permanent slip.
  • the adjusting device according to the invention has an additional mechanical lock.
  • a phase adjustment between the drive-side sprocket or pulley and the output-side cam lobe can be made or a phase position once set can be held in position.
  • the reibschl ⁇ ssige brake system is designed as an electromagnetically actuated friction system.
  • the superposition gear can be designed as a planetary gear or ais gear with two Clarfimratorn and a two-stage planet, with any form of superposition gear is suitable for use in the system according to the invention.
  • the reibschl ⁇ ssige brake system with additional mechanical locking of the adjustment device comprises an electrically actuated shift coil 1, which has a friction surface 8, a magnetic Reibbeiag 2 with a locking element 6 and a spring 3, wherein the locking element 6 with a drive-side element 5 of Matteriage- gearing 7 cooperates.
  • the friction lining 2 is axially movable but rotationally fixed to a spur gear 4 of the superimposed ngsgetriebes 7.
  • the superposition gear 7 is designed as a gearbox with two sunstones 4, 9 and a two-stage planet 10.
  • the camshaft is rotatably connected to the second spur gear 9 of the superposition gear 7; the drive is connected to the planet carrier.
  • the superposition gear 7 as Pianetengetriebe it is advantageous to arrange the friction lining 2 on the sun teeth;
  • the camshaft is connected to the ring gear.
  • the required phase angle can be adjusted and maintained via a planetary gear set or other ⁇ berlagerungsge ⁇ be.
  • the friction lining 2 is oil-filled; This can be done either from the outside ⁇ Qlnebel, etc.) or from the middle of the camshaft.
  • the friction lining 2 can be used as a paper covering with special embossing, comprising e.g. Radial grooves with waffle pattern, or be designed as a carbon coating. In the version as a carbon lining this can have a covering thickness of about 0.05 mm.
  • a Carbonbeiag has the advantage that the wear is very low.
  • the braking torque can also be generated via a mixed friction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Braking Arrangements (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

An adjustment device for a camshaft includes a brake system and a superposition gear system connected on a drive output side to the camshaft and on the drive input side to the crankshaft, such that to adjust the camshaft the superposition gear system dissipates part of the energy from the drive side into the brake system. The brake system is a frictional brake system, such that the necessary braking force is produced by a friction lining that operates in a slipping condition.

Description

Versteiivorrichf unα für eine Nockenwelle Versteiivorrichf unα for a camshaft
Die vorliegende Erfindung betrifft eine Verstellvorrichtung für eine Nockenwelle, gemäß dem Oberbegriff des Patentanspruchs 1.The present invention relates to an adjusting device for a camshaft, according to the preamble of patent claim 1.
Aus dem Stand der Technik ist bekannt, die Verstellbeweguπg der Nockenwelle über verschleißfreie und berührungslose Bremssysteme zu erzeugen.From the prior art it is known to produce the Verstellbeweguπg the camshaft on wear-free and non-contact braking systems.
Beispielsweise ist aus der DE 103 55 560 A1 eine Versteüvorrichtung für eine Nockenwelle einer Brenn kraftmaschiπe bekannt weiche ein von einer Kurbelwelle der Brennkraftmaschine angetriebenes Antriebselement, ein die Nockenwelle der Brennkraftmaschine antreibendes Abtriebselement und ein Stellelement aufweist, das von einer Bremse beaufschlagt wird, wobei durch Variation des Bremsmomentes am Stellelement eine Relativdrehung zwischen Antriebselement und Abtriebselement erreichbar ist. Dabei lässt die Bauform der Verstellvorrichtung beliebige Phasenwinkel zwischen Antriebselement und Abtriebseiement zu. Die Bremse ist als berührungsios arbeitende, elektromagnetische Bremse ausgeführt; vorzugsweise wird eine Hysteresebremse verwendet, deren Bremsmoment unabhängig von der Drehzahl ist.For example, from DE 103 55 560 A1 a Versteüvorrichtung for a camshaft of a Brennmaschiniaschiπe known soft driven by a crankshaft of the internal combustion engine drive element, a camshaft of the internal combustion engine driving output element and an actuating element, which is acted upon by a brake, wherein by variation the braking torque on the actuator relative rotation between the drive element and output element is reached. The design of the adjusting device allows any phase angle between the drive element and the driven element. The brake is designed as berührungsios working, electromagnetic brake; Preferably, a hysteresis brake is used whose braking torque is independent of the speed.
Derartige Systeme sind in nachteiliger Weise aufgrund der benötigten berührungslos arbeitenden Komponenten teuer und benötigen eine Fail-Save- Verriegelung, wofür ein weiterer Aktuator benötigt wird.Such systems are disadvantageously expensive due to the required non-contact components and require a fail-safe latch, for which a further actuator is needed.
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, eine Versfeilvorrichtung für eine Nockenwelle anzugeben, welche kostengünstig herstellbar ist. Diese Aufgabe wird durch die Merkmale des Patentanspruchs 1 gelöst. Weitere erfindungsgemäße Ausgestaltungen und Vorteile gehen aus den Unteransprüchen hervor,The present invention is therefore based on the object to provide a Versfeilvorrichtung for a camshaft, which is inexpensive to produce. This object is solved by the features of patent claim 1. Further embodiments and advantages of the invention will become apparent from the dependent claims,
Demnach wird eine Verstellvorrichtung für eine Nockenwelle vorgeschlagen, umfassend ein ßremssystem und ein mit der Nockenwelle abtriebsseitig und der Kurbelwelle antriebsseitig verbundenes Öberlagerungsgetriebe, wobei das Überlagerungsgetriebe zum Verstellen der Nockenwelle einen Teil der antriebsseitigen Energie in das Bremssystem abführt, wobei das Bremssystem als reibschlüssiges Bremssystem ausgeführt ist, bei dem die erforderliche Bremskraft über einen im Dauerschlupf befindlichen Reibbelag erzeugt wird. Zudem weist die erfindungsgemäße Verstellvorrichtung eine zusätzliche mechanische Verriegelung auf.Accordingly, an adjusting device for a camshaft is proposed, comprising a braking system and an output side connected to the camshaft and the crankshaft drive side Öberlagerungsgetriebe, wherein the superposition gear for adjusting the camshaft dissipates a part of the drive-side energy in the brake system, wherein the brake system is designed as a frictional braking system in which the required braking force is generated via a friction lining in permanent slip. In addition, the adjusting device according to the invention has an additional mechanical lock.
Ober das reibschlüssige Bremssystem gemäß der Erfindung kann eine Phasenverstellung zwischen antriebsseitigem Kettenrad oder Riemenscheibe und der abtriebsseitigen Nockenweile vorgenommen werden oder eine einmal eingestellte Phaselage auf Position gehalfen werden.Above the frictional braking system according to the invention, a phase adjustment between the drive-side sprocket or pulley and the output-side cam lobe can be made or a phase position once set can be held in position.
Im Rahmen einer besonders vorteilhaften Ausführungsform der Erfindung ist das reibschlϋssige Bremssystem als elektromagnetisch betätigtes Reibsystem ausgebildet. Des weiteren kann das Überlagerungsgetriebe als Planetengetriebe oder ais Getriebe mit zwei Sonnensfimrädern und einem zweistufigen Planeten ausgeführt sein, wobei auch jede Form eines Überlagerungsgetriebes zum Einsatz beim erfindungsgemäßen System geeignet ist.In the context of a particularly advantageous embodiment of the invention, the reibschlϋssige brake system is designed as an electromagnetically actuated friction system. Furthermore, the superposition gear can be designed as a planetary gear or ais gear with two Sonnenfimrädern and a two-stage planet, with any form of superposition gear is suitable for use in the system according to the invention.
Durch die erfindungsgemäße Konzeption werden die Kosten reduziert, da teure Elemente der berührungslosen Systeme nicht benötigt werden und die im System erforderliche Fail-Save- Verriegelung im Rahmen der Schaltbewegung im Reibbelag mit getätigt werden kann. Hierdurch kann in vorteilhafter Weise ein kompletter Aktuator eingespart werden. Die Erfindung wird im Folgenden anhand der beigefügten Figur, welche eine schematische Schnittansicht einer bevorzugten Ausführungsform darstellt, beispielhaft näher erläutert.The inventive concept, the cost is reduced because expensive elements of the non-contact systems are not needed and required in the system fail-safe locking can be made as part of the switching movement in the friction lining. As a result, advantageously a complete actuator can be saved. The invention is explained in more detail below by way of example with reference to the attached FIGURE, which is a schematic sectional view of a preferred embodiment.
Die reibschlϋssige Bremssystem mit zusätzlicher mechanischer Verriegelung der Verstellvorrichtung gemäß der Erfindung umfasst eine elektrisch betätigbare Schaltspule 1 , die eine Reibfläche 8 aufweist, einen magnetischen Reibbeiag 2 mit einem Verriegelungselement 6 und eine Feder 3, wobei das Verriegelungselement 6 mit einem antriebsseitigen Element 5 des Überiage- rungsgetriebes 7 zusammenwirkt. Hierbei ist der Reibbelag 2 axial beweglich aber drehfest an einem Stirnrad 4 des Überlagern ngsgetriebes 7 befestigt.The reibschlϋssige brake system with additional mechanical locking of the adjustment device according to the invention comprises an electrically actuated shift coil 1, which has a friction surface 8, a magnetic Reibbeiag 2 with a locking element 6 and a spring 3, wherein the locking element 6 with a drive-side element 5 of Überiage- gearing 7 cooperates. Here, the friction lining 2 is axially movable but rotationally fixed to a spur gear 4 of the superimposed ngsgetriebes 7.
Bei der gezeigten Ausführungsform ist das Überiagerungsgetriebe 7 als Getriebe mit zwei Sonnenstirnrädern 4, 9 und einem zweistufigen Planeten 10 ausgeführt. Hierbei ist die Nockenwelle mit dem zweiten Stirnrad 9 des Überla- gerungsgetriebes 7 drehfest verbunden; der Antrieb ist mit dem Planetenträger verbunden.In the embodiment shown, the superposition gear 7 is designed as a gearbox with two sunstones 4, 9 and a two-stage planet 10. Here, the camshaft is rotatably connected to the second spur gear 9 of the superposition gear 7; the drive is connected to the planet carrier.
Bei einer Ausführung des Überlagerungsgetriebes 7 als Pianetengetriebe ist es vorteilhaft, den Reibbelag 2 auf der Sonnenverzahnung anzuordnen; in diesem Fall ist die Nockenwelle mit dem Hohlrad verbunden.In one embodiment of the superposition gear 7 as Pianetengetriebe it is advantageous to arrange the friction lining 2 on the sun teeth; In this case, the camshaft is connected to the ring gear.
Bei nicht bestromter Schaitspuie 1 liegt keine elektromagnetische Kraft am Reibbelag 2 an, so dass durch die Kraft der Feder 3 auf den Reibbelag 2 das Stirnrad 4 über den Reibbelag 2 und das Verriegelungselement 6 mit dem antriebsseitigen Element 5 des Überlagerungsgetriebes 7 formschlüssig verbunden ist.When not energized Schaitspuie 1 is no electromagnetic force on the friction lining 2, so that by the force of the spring 3 on the friction lining 2, the spur gear 4 via the friction lining 2 and the locking element 6 is positively connected to the drive-side element 5 of the superposition gear 7.
Bei Bestromung der Schaitspuie 1 wirkt die magnetische Kraft auf den Reibbelag 2, so dass sich der Reibbeiag 2 an seiner Reibfläche an die Reibfläche 8 der Schaitspuie 1 anlegt. Gleichzeitig rückt das Verriegelungselement 6 aus dem antriebsseitigen Element 5 des Überlagerungsgefriebes 7 aus. Das über die Schaltspuie 1 aufgebaute Bremsmoment kann nun über das Stirnrad 4 in das Oberlagerungsgetriebe 7 einfließen.When energizing the Schaitspuie 1, the magnetic force acts on the friction lining 2, so that the Reibbeiag 2 rests on its friction surface against the friction surface 8 of the Schaitspuie 1. At the same time, the locking element 6 moves from the drive-side element 5 of the Überlagerungsgefriebes 7. The braking torque built up via the shift spool 1 can now flow into the superordinate transmission 7 via the spur gear 4.
Durch die elektrische Regelung der Schaltspule 1 kann die erforderliche Phasenlage über einen Planetensatz oder ein anderes Öberlagerungsgeϊriebe eingestellt und gehalten werden. Um den Reibbelag unter hoher Schlupfleistung betreiben zu können, kann vorgesehen sein, dass der Reibbelag 2 öl- durchfiutet wird; dies kann entweder von außen {Qlnebel, etc.) oder aus der Mitte der Nockenwelle erfolgen.By the electrical control of the switching coil 1, the required phase angle can be adjusted and maintained via a planetary gear set or other Öberlagerungsgeϊbe. In order to operate the friction lining under high slip performance, it can be provided that the friction lining 2 is oil-filled; This can be done either from the outside {Qlnebel, etc.) or from the middle of the camshaft.
Der Reibbeiag 2 kann als Papierbelag mit spezieller Prägung, umfassend z.B. radiale Rillen mit Waffelmuster, oder als Carbonbelag ausgeführt sein. Bei der Ausführung als Carbonbelag kann dieser eine Belagstärke von ca. 0,05 mm aufweisen. Ein Carbonbeiag weist den Vorteil auf, dass der Verschleiß sehr gering ist.The friction lining 2 can be used as a paper covering with special embossing, comprising e.g. Radial grooves with waffle pattern, or be designed as a carbon coating. In the version as a carbon lining this can have a covering thickness of about 0.05 mm. A Carbonbeiag has the advantage that the wear is very low.
Im Rahmen einer vorteilhaften Weiterbildung der Erfindung wird vorgeschlagen, das Bremsmoment über eine hydrodynamische Gleitlagerfläche zu erzeugen, bei der sich das Bremsmoment durch Scheerkräfte im Ölfilm des Reibbelags 2 einstellt. Hierbei bleibt die Reibfläche verschleißfrei; gemäß der Erfindung kann das Bremsmoment auch über eine Mischreibung erzeugt werden. In the context of an advantageous development of the invention, it is proposed to generate the braking torque via a hydrodynamic sliding bearing surface, in which the braking torque is set by shearing forces in the oil film of the friction lining 2. Here, the friction surface remains wear-free; According to the invention, the braking torque can also be generated via a mixed friction.
BezuαszeichenBezuαszeichen
1 SchaltspuSe1 switching pump
2 Reibbelag2 friction lining
3 Feder3 spring
4 Stirnrad4 spur gear
5 antriebsseitiges Element des Überlagerungsgetriebes 75 drive-side element of the superposition gearing 7
6 Verriegelungselement6 locking element
7 Überlagerungsgetriebe7 superposition gearbox
8 Reibfläche der Schaltspuie 18 Friction surface of the circuit 1
9 Stirnrad9 spur gear
10 Planet 10 planet

Claims

Patentansprüche claims
1 , Verstellvorrichtung für eine Nockenwelle, umfassend ein Bremssystem und ein mit der Nockenweile abtriebsseitig und der Kurbelwelle antriebsseitig verbundenes Überiagerungsgetriebe, wobei das Überlagerungsgetriebe zum Verstellen der Nockenweiie einen Teil der antriebsseitigen Energie in das Bremssystem abführt, dadurch gekennzeichnet, dass das Bremssystem als reibschiüssiges Bremssystem ausgeführt ist, bei dem die erforderliche Bremskraft über einen im Dauerschlupf befindlichen Reibbelag (2) erzeugt wird.1, adjusting device for a camshaft, comprising a brake system and an output side connected to the cam shaft and the crankshaft on the drive side Überiagerungsgetriebe, wherein the superposition gear for adjusting the cam line dissipates a part of the drive-side energy in the brake system, characterized in that the brake system designed as reibschiüssiges brake system is, in which the required braking force via a permanent slip friction lining (2) is generated.
2, Verstellvorrichtung für eine Nockenweile nach Anspruch 1 , dadurch gekennzeichnet, dass das Bremssystem als elektromagnetisch betätigtes Reibsystem ausgebildet ist.2, adjusting device for a Nockenweile according to claim 1, characterized in that the braking system is designed as an electromagnetically actuated friction system.
3, Verstellvorrichtung für eine Nockenweile nach Anspruch 2, dadurch gekennzeichnet, dass das Bremssystem eine eiektrisch betätigbare Schaltspuie (1), die eine Reibfläche (8) aufweist, einen Reibbelag (2) mit einem mit einem antriebsseitigen Element (5) des Überlagerungsgetriebes (7) zusammenwirkenden Verriegelungseiernent (6) und eine Feder (3) umfasst, wobei der Reibbelag (2) axial beweglich aber drehfest an einem Stirnrad (4) des Überlagerungsgetriebes (7) befestigt ist, wobei bei nicht bestromter Schaltspule (1) das Stirnrad (4) durch die Kraft der Feder (3) über den Reibbelag (2) und das Verriegeiungselement (6) mit dem antriebsseitigen Element (5) des Überlagerungsgetriebes (7) formschlϋssig verbunden ist, und wobei bei Bestromung der Schaltspuie (1) durch die Wirkung der magnetischen Kraft auf den Reibbelag (2), dieser an seiner Reibfläche an die Reibfläche (8) der Schaltspuie (1) zum Anliegen bringbar ist, so dass das über die Schaltspule (1) aufgebaute Bremsmoment über das Stirnrad (4) in das Überlagerungsgetriebe (7) einfließt. 3, adjusting device for a Nockenweile according to claim 2, characterized in that the brake system a eigktrisch actuable Schalttspuie (1) having a friction surface (8), a friction lining (2) with a drive-side element (5) of the superposition gear (7 ) cooperating Verriegelungsseiernent (6) and a spring (3), wherein the friction lining (2) axially movable but rotationally fixed to a spur gear (4) of the superposition gear (7) is fixed, wherein in non-energized switching coil (1) the spur gear (4 ) by the force of the spring (3) on the friction lining (2) and the Verriegeiungselement (6) with the drive - side element (5) of the superposition gearing (7) is positively connected, and wherein when energized the Schalttspuie (1) by the action of Magnetic force on the friction lining (2), this on its friction surface on the friction surface (8) of the Schalttspuie (1) can be brought to rest, so that via the switching coil (1) constructed braking torque about flows the spur gear (4) in the superposition gearing (7).
4, Verstellvorrichtung für eine Nockenwelle nach Anspruch 3, dadurch gekennzeichnet, dass der Reibbelag (2) des Bremssystems öldurch- flutet wird, wobei dies entweder von außen oder aus der Mitte der Nockenwelie erfolgt,4, adjusting device for a camshaft according to claim 3, characterized in that the friction lining (2) of the brake system is flooded oil, which takes place either from the outside or from the center of the cam shaft,
5. Verstellvorrichtung für eine Nockenwelle nach Anspruch 4, dadurch gekennzeichnet, dass der Reibbelag (2) als Papierbelag mit spezieller Prägung oder ais Carbonbelag ausgeführt ist5. adjusting device for a camshaft according to claim 4, characterized in that the friction lining (2) is designed as a paper surface with a special embossing or ais carbon coating
6, Verstellvorrichtung für eine Nockenwelle nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Bremsmoment über eine hydrodynamische Gleitlagerfliche erzeugbar ist, wobei es sich durch Scheerkräfte im Ölfilm des Reibbelags (2) einstellt.6, adjusting device for a camshaft according to one of the preceding claims, characterized in that the braking torque can be generated via a hydrodynamic Gleitlagerfliche, wherein it sets by shear forces in the oil film of the friction lining (2).
7. Verstellvorrichtung für eine Nockenweile nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Überiagerungs- getriebe ais Planetengetriebe oder als Getriebe mit zwei Sonnenstimrädern und einem zweistufigen Planeten ausgeführt ist. 7. Adjustment device for a Nockenweile according to one of the preceding claims, characterized in that the Überiagerungs- transmission is designed as a planetary gear or as a transmission with two Sonnenstimrädern and a two-stage planet.
EP07712206A 2006-03-15 2007-02-12 Adjustment device for a camshaft Not-in-force EP1994262B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006011806A DE102006011806A1 (en) 2006-03-15 2006-03-15 Adjustment device for a camshaft
PCT/EP2007/051306 WO2007104620A1 (en) 2006-03-15 2007-02-12 Adjustment device for a camshaft

Publications (2)

Publication Number Publication Date
EP1994262A1 true EP1994262A1 (en) 2008-11-26
EP1994262B1 EP1994262B1 (en) 2009-12-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP07712206A Not-in-force EP1994262B1 (en) 2006-03-15 2007-02-12 Adjustment device for a camshaft

Country Status (7)

Country Link
US (1) US7841312B2 (en)
EP (1) EP1994262B1 (en)
JP (1) JP4921493B2 (en)
KR (1) KR101311689B1 (en)
AT (1) ATE453041T1 (en)
DE (2) DE102006011806A1 (en)
WO (1) WO2007104620A1 (en)

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DE102008043673A1 (en) 2008-11-12 2010-05-20 Zf Friedrichshafen Ag Camshaft adjustment system for internal combustion engine, has differential drives formed as planet gear with output element comprising hollow wheel
DE102008043671A1 (en) 2008-11-12 2010-05-20 Zf Friedrichshafen Ag Adjustment system for camshafts of an internal combustion engine
DE102009026626A1 (en) 2009-06-02 2010-12-09 Zf Friedrichshafen Ag Clutch or brake in or on a gearbox
DE102010039426A1 (en) 2010-08-18 2012-02-23 Zf Friedrichshafen Ag Valve train for internal combustion piston engine, has locking element provided with ratchet tooth, which is projected axially above external periphery of brake rotor and engaged with recesses
DE102010039861A1 (en) 2010-08-27 2012-03-01 Zf Friedrichshafen Ag Valve gear of a combustion piston engine
DE102012203984A1 (en) 2012-03-14 2013-09-19 Zf Friedrichshafen Ag Device i.e. camshaft adjuster, for displacing camshaft of internal combustion engine of motor car, has gearing tracks axially arranged at distance from each other by annular gap, and output ring gears rotatably inserted into annular gap
DE102020120618A1 (en) 2020-08-05 2022-02-10 Schaeffler Technologies AG & Co. KG Arrangement for adjusting a camshaft for variable valve control of an internal combustion engine and method for operating an arrangement for adjusting a camshaft

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JP2009529623A (en) 2009-08-20
US20090095124A1 (en) 2009-04-16
KR20080104264A (en) 2008-12-02
JP4921493B2 (en) 2012-04-25
DE102006011806A1 (en) 2007-10-04
US7841312B2 (en) 2010-11-30
WO2007104620A1 (en) 2007-09-20
EP1994262B1 (en) 2009-12-23
KR101311689B1 (en) 2013-09-25
DE502007002410D1 (en) 2010-02-04
ATE453041T1 (en) 2010-01-15

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