EP2166199A1 - Wing cell camshaft adjuster - Google Patents

Wing cell camshaft adjuster Download PDF

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Publication number
EP2166199A1
EP2166199A1 EP09009671A EP09009671A EP2166199A1 EP 2166199 A1 EP2166199 A1 EP 2166199A1 EP 09009671 A EP09009671 A EP 09009671A EP 09009671 A EP09009671 A EP 09009671A EP 2166199 A1 EP2166199 A1 EP 2166199A1
Authority
EP
European Patent Office
Prior art keywords
rotor
stator
spring
flügelzellennockenwellenversteller
spiral spring
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
EP09009671A
Other languages
German (de)
French (fr)
Other versions
EP2166199B1 (en
Inventor
Karl-Heinz Isenberg
Fatih Dogan
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.)
Hilite Germany GmbH
Original Assignee
Hydraulik Ring GmbH
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Filing date
Publication date
Application filed by Hydraulik Ring GmbH filed Critical Hydraulik Ring GmbH
Publication of EP2166199A1 publication Critical patent/EP2166199A1/en
Application granted granted Critical
Publication of EP2166199B1 publication Critical patent/EP2166199B1/en
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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
    • F01L1/34—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
    • 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
    • F01L1/3442—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 hydraulic chambers with variable volume to transmit the rotating force
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • 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
    • F01L1/3442—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 hydraulic chambers with variable volume to transmit the rotating force
    • F01L2001/34423—Details relating to the hydraulic feeding circuit
    • F01L2001/34426—Oil control valves
    • 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
    • F01L1/3442—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 hydraulic chambers with variable volume to transmit the rotating force
    • F01L2001/3445—Details relating to the hydraulic means for changing the angular relationship
    • F01L2001/34483—Phaser return springs

Definitions

  • the invention relates to a wellgelzellennockenwellenversteller according to the preamble of claim 1.
  • the object of the invention is to provide a wellgelzellennockenwellenversteller whose restoring moments are set very precisely.
  • a vane-type camshaft phaser is used.
  • This creategelzellennockenwellenversteller builds axially very short, which benefits the tight space conditions of both transversely and longitudinally installed drive trains.
  • a spiral spring with a rectangular profile holds the rotor with respect to the stator in a certain angular position.
  • the rotor in a necessary for the engine start early exhaust camshaft position are brought.
  • the alternating torques of the camshaft can be compensated, which are different degrees of effectiveness in the two directions of torque of the camshaft.
  • the coil spring can be twisted in a particularly advantageous manner in the rest position in the torque direction "early”, since the adjustment of the copezellennockenwellenverstellers in the torque direction "late” due to the supporting effect of the alternating moments anyway faster.
  • the spiral spring it is achieved by means of the spiral spring, that the adjustment in "early” as fast as in "late".
  • a spiral spring with a rectangular profile can be manufactured with very low tolerances.
  • the rectangular wire of the coil spring can be particularly well grasped by a jig and then angled. Then, the angled bent portion makes it possible to further hold the coil spring at this angled corner portion with a jig and to wind the spring to an exact dimension.
  • a round wire would be difficult to grip here with a clamping device, since such a round wire is only frictionally engaged and not form-fit to grip. The winding takes place substantially around the central axis of the spiral spring.
  • the coil spring is not wound exactly evenly, since some of the turns of the coil springs should abut each other, so that there is generated during the tension of the coil spring, a friction torque that prevents a swinging of the coil spring. This damping effect thus acting friction can also be adjusted exactly as a result of the rectangular profile.
  • the bent or angled region can be in a particularly advantageous manner the radially outer end of the spiral spring relative to the central axis.
  • the angle can be selected in a particularly advantageous development so that the coil spring rests already in the unloaded state of the Nockwellenverstellers on the side plane.
  • This damping and operationally secure measure according to claim 4 is of particular advantage when the coil spring is open - i. without protective cover - rests on the camshaft adjuster. This angle of less than 90 °, due to its rigidity during operation, bends only so slightly that an anti-rotation lock against the stator is still ensured.
  • the radially inner end can be fixed against rotation relative to the rotor.
  • the inner end can be inserted, for example through the side plane in a receiving recess of the rotor.
  • a rotatably connected to the rotor component is the so-called spring adapter.
  • Claim 9 shows a particularly advantageous embodiment of the invention. Consequently, the rectangular profile of the spiral spring has two opposite edge lengths, deviate from the other two edge lengths, the shorter edge lengths facing the side or facing away from this. Simplified, this means that the rectangular profile of the spiral spring "upright" stands on the page level.
  • the coil spring is bent in a particularly advantageous manner at the angled portion in the stiffer direction.
  • this angled area on the one hand during operation of the viagelzellennockenwellenverstellers also heavier auzubiegen so that the spring can not slip out of the attachment to the stator.
  • the coil spring is softer in the direction of rotation about the central axis, which improves their function. It is also possible with this orientation of the profile to accommodate more turns with more friction in the same space.
  • the wellgelzellennockenwellenwellenversteller With a wellgelzellennockenwellenwellenversteller the angular position between the crankshaft and the camshaft is changed during operation of an internal combustion engine. By turning the camshaft, the opening and closing times of the gas exchange valves are shifted so that the internal combustion engine brings its optimal performance at the respective speed. Of the wellgelzellennockenwellenversteller allows infinite adjustment of the camshaft relative to the crankshaft.
  • the wellgelzellennockenwellenwellenversteller has a cylindrical stator 1, the rotation with a in Fig. 2 apparent gear 2 is connected.
  • the gear 2 is a sprocket over which a chain, not shown, is guided.
  • the gear 2 may also be a toothed belt wheel over which a drive belt is guided as a drive element.
  • the stator 1 is drivingly connected to the crankshaft in a known manner.
  • the stator 1 and the gear 2 may alternatively be integrally formed with each other when the other side of the stator 1 is openable.
  • the stator 1 and the gear 2 may also be made of metallic material or of hard plastic.
  • metallic materials u. a. Sintered metals, steel sheets and aluminum in question.
  • the stator 1 comprises a cylindrical stator base body 3, on the inside of which protrude webs 4 at equal intervals radially inwardly. Between adjacent webs 4 pressure chambers 5 are formed, in which, controlled by a non-illustrated 4/3-way valve, pressure medium is introduced. Between adjacent webs 4 protrude wings 6, which protrude radially outward from a cylindrical rotor body 7 of a rotor 8. These wings 6 divide the pressure chambers 5 between the webs 4 in each case in two pressure chambers 9 and 10th
  • the webs 4 lie with their end faces sealingly against the outer circumferential surface of the rotor base body 7.
  • the wings 6 in turn lie with their end faces sealingly against the cylindrical inner wall of the stator main body 3.
  • the rotor 8 is rotatably connected to the camshaft, not shown. In order to change the angular position between the camshaft and the crankshaft, the rotor 8 is rotated relative to the stator 1. For this purpose, depending on the desired direction of rotation, the pressure medium in the pressure chambers 9 or 10 is pressurized, while the respective other pressure chambers 10 or 9 are relieved to the tank.
  • the stator 1 is in one piece as an in Fig. 2 apparent pot-shaped stator cover running, which is firmly bolted to the gear 2.
  • the stator cover is designed as a casting with a cast edge 20.
  • the end faces of the webs 4 and the wings 6 are on the one hand close to the gear 2 and on the other hand close to the stator cover.
  • This stator cover and the gear 2 also limit the pressure chambers 5 between the wings 4 in the axial direction.
  • a lock between the rotor 8 and the stator 1, for example, by a spring-loaded locking pin 21 This is accommodated in one of the wings 6.
  • this locking bolt 21 is moved by the spring force of a helical compression spring, not shown, into a locking position in which it engages in a locking opening of the stator 1.
  • the locking bolt 21 is loaded by the pressure medium against the spring force and pushed back, so that the rotor 8 is unlocked from the stator 1 and the viagelzellennockenwellenversteller can get into its control position.
  • the coil spring 12 rests on a side plane 22 arranged perpendicular to the central axis of the vane-cell camshaft adjuster on the stator cover.
  • the coil spring 12 is rotatably connected to the rotor 8 with a radially inner end 14.
  • the radially outer end 15 of the coil spring 12 is rotatably and positively supported on the stator 1.
  • the radially outer end 15 of the coil spring 12 in the unloaded state of the rempligelzellennockenwellenverstellers angled at an angle ⁇ of 88 °. This angled end 15 is inserted into a receiving recess 16 of the stator 1.
  • the radially inner end 14 of the coil spring 12 is bent radially inwardly and engages in a radially aligned receiving recess 24 of a rotatably connected to the rotor 8 spring adapter 23 a.
  • This spring adapter 23 has an unspecified pin, which by means of a press fit into a Hub of the rotor 8 is inserted.
  • the spring adapter 23 is rotationally fixed relative to the rotor 8.
  • the radially inwardly bent end 14 and the radial receiving recess 24 in this case point to the central axis 25 of the copegelzellennockenwellenverstellers.
  • the coil spring 12 has a rectangular profile which rests "edgewise" on the side plane 22. That is, two opposite edge lengths 26a, 26b of the rectangular profile deviate from the other two edge lengths 27a, 27b.
  • the one short edge length 26a faces the side plane 22, whereas the other short edge length 26b faces away from the side plane 22.
  • the one long edge length 27a points radially inwards, whereas the other long edge length 27b faces radially outward.
  • the vane camshaft adjuster may be applied to an intake camshaft and / or an exhaust camshaft.
  • the vane cam phaser may apply to a single camshaft find that both the inlet gas exchange valves and the outlet gas exchange valves adjusted.
  • the inner end of the coil spring is connected to a component which is rotationally fixed to the rotor.
  • This component can thus be the rotor itself.
  • it may be a pin or a sleeve which is positively connected to the rotor or via a press fit with or without corrugation.
  • a pin or such a sleeve is also referred to as a spring adapter, since at least one of their functions is the connection between the rotor and the coil spring.
  • the rectangular profile of the coil spring can also be square.
  • an additional spring cover which protects the coil spring on the one hand against dirt and other Umwalteinflüssen and on the other hand can form a friction partner and a "captive" for the coil spring.
  • this guard can also be made for example of plastic.
  • the diegelzellennockenwellenwellensteller protected anyway by a chain case or belt box, so u. U. no additional protective cover necessary.
  • the camshaft adjuster is not driven by a toothed belt or a chain but by a gear of an axially offset second camshaft adjuster.

Abstract

The vane-type camshaft adjuster comprises a lateral plane, which is arranged vertical to its central axis (25), on which a spiral spring (12) rests, which holds a rotor opposite to a stator in certain angular position. The spiral spring has a right angle profile, where a spring section is bent through the lateral plane, such that the spiral spring is supported in torque proof manner against the stator or the rotor in form-fit manner.

Description

Die Erfindung betrifft einen Flügelzellennockenwellenversteller nach dem Oberbegriff von Patentanspruch 1.The invention relates to a Flügelzellennockenwellenversteller according to the preamble of claim 1.

Aus der US 7,004,129 B2 ist bereits ein Flügelzellennockenwellenversteller bekannt. Auf einer senkrecht zu dessen Zentralachse angeordneten Seitenebene eines Stators liegt eine Spiralfeder auf. Diese Spiralfeder ist bestrebt, einen Rotor gegenüber dem Stator in einer bestimmten Winkelstellung zu halten. Die Spiralfeder besteht aus einem Draht mit rundem Profil. Dieser Draht ist mittels einer ersten Biegung am äußeren Ende gegenüber Vorsprüngen am Stator abgestützt. Mittels einer zweiten Biegung am inneren Ende ist die Spiralfeder gegenüber dem Rotor abgestützt.From the US 7,004,129 B2 is already known a Flügelzellennockenwellenwellenversteller. On a plane perpendicular to the central axis side plane of a stator is located on a coil spring. This coil spring endeavors to hold a rotor relative to the stator in a certain angular position. The spiral spring consists of a wire with a round profile. This wire is supported by means of a first bend at the outer end to projections on the stator. By means of a second bend at the inner end of the coil spring is supported relative to the rotor.

Aus der EP 0 356 018 A1 ist eine Nockenwellverstelleinrichtung anderer Art bekannt, bei welcher eine Spiralfeder mit rechteckigem Profil Anwendung findet.From the EP 0 356 018 A1 is a Nockenwellverstelleinrichtung other type known in which a coil spring with rectangular profile applies.

Ferner ist aus der US 6,155,219 ein Flügelzellennockenwellenversteller mit einer Spiralfedern und aus rundem Draht bekannt.Furthermore, from the US 6,155,219 a Flügelzellennockenwellenwellenversteller with a spiral springs and round wire known.

Aufgabe der Erfindung ist es, einen Flügelzellennockenwellenversteller zu schaffen, dessen Rückstellmomente besonders genau eingestellt sind.The object of the invention is to provide a Flügelzellennockenwellenversteller whose restoring moments are set very precisely.

Gemäß einem Vorteil der Erfindung findet ein Flügelzellennockenwellenversteller Anwendung. Dieser Flügelzellennockenwellenversteller baut axial sehr kurz, was den engen Bauraumverhältnissen sowohl von quer als auch von längs eingebauten Antriebssträngen zugute kommt.According to an advantage of the invention, a vane-type camshaft phaser is used. This Flügelzellennockenwellenversteller builds axially very short, which benefits the tight space conditions of both transversely and longitudinally installed drive trains.

Gemäß einem weiteren Vorteil der Erfindung hält eine Spiralfeder mit rechteckigem Profil den Rotor gegenüber dem Stator in einer bestimmten Winkelstellung. Bei der dem Auslass zugeordneten Nockenwelle kann mit dieser Spiralfeder der Rotor in eine für den Motorstart nötige frühe Auslassnockenwellenstellung gebracht werden. Generell können bei beiden Nockenwellen - d.h. Einlass und Auslass - durch eine Vorspannung der Spiralfeder in eine Drehmomentenrichtung die Wechselmomente der Nockenwelle kompensiert werden, welche in den beiden Drehmomentenrichtungen der Nockenwelle unterschiedlich stark wirksam sind. Diese Wechselmomente entstehen durch die Ventilfederkräfte an den Gaswechselventilen und sind stark abhängig von der Anzahl der Zylinder. Die Wechselmomente sind umso ungleichförmiger, je weniger Zylinder der Verbrennungsmotor aufweist. Dabei kann die Spiralfeder in besonders vorteilhafter Weise in Ruhelage in die Drehmomentenrichtung "Früh" verdreht sein, da die Verstellung des Flügelzellennockenwellenverstellers in Drehmomentenrichtung "Spät" aufgrund der unterstützenden Wirkung durch die Wechselmomente ohnehin schneller erfolgt. Somit wird mittels der Spiralfeder erreicht, dass die Verstellung in "Früh" ebenso schnell geht wie in "Spät".According to a further advantage of the invention, a spiral spring with a rectangular profile holds the rotor with respect to the stator in a certain angular position. In the camshaft associated with the outlet can with this coil spring, the rotor in a necessary for the engine start early exhaust camshaft position are brought. In general, in both camshafts - ie inlet and outlet - by a bias of the coil spring in a torque direction, the alternating torques of the camshaft can be compensated, which are different degrees of effectiveness in the two directions of torque of the camshaft. These alternating moments are caused by the valve spring forces on the gas exchange valves and are highly dependent on the number of cylinders. The alternating moments are all the more irregular, the less cylinders the internal combustion engine has. In this case, the coil spring can be twisted in a particularly advantageous manner in the rest position in the torque direction "early", since the adjustment of the Flügelzellennockenwellenverstellers in the torque direction "late" due to the supporting effect of the alternating moments anyway faster. Thus, it is achieved by means of the spiral spring, that the adjustment in "early" as fast as in "late".

Eine Spiralfeder mit einem rechteckige Profil kann mit besonders geringen Toleranzen gefertigt werden. So kann der rechteckige Draht der Spiralfeder besonders gut von einer Spannvorrichtung gegriffen werden und anschließend abgewinkelt werden. Dann ermöglicht es der abgewinkelt gebogenem Bereich, die Spiralfeder an diesem abgewinkelten eckigen Bereich mit einer Spannvorrichtung weiter zu halten und die Feder auf ein exaktes Maß zu wickeln. Beispielsweise ein runder Draht wäre hier schwer mit einer Spannvorrichtung zu greifen, da ein solcher runder Draht nur reibschlüssig und nicht Formschlüssig zu greifen ist. Die Wicklung erfolgt dabei im Wesentlichen um die Zentralachse der Spiralfeder. Dabei ist die Spiralfeder jedoch nicht exakt gleichmäßig gewickelt, da einige der Windungen der Spiralfedern aneinander anliegen sollen, so dass dort beim Verspannung der Spiralfeder ein Reibmoment erzeugt wird, das ein Aufschwingen der Spiralfeder verhindert. Dieses somit dämpfend wirkende Reibmoment kann insoweit infolge des rechteckigen Profils ebenfalls genau eingestellt werden.A spiral spring with a rectangular profile can be manufactured with very low tolerances. Thus, the rectangular wire of the coil spring can be particularly well grasped by a jig and then angled. Then, the angled bent portion makes it possible to further hold the coil spring at this angled corner portion with a jig and to wind the spring to an exact dimension. For example, a round wire would be difficult to grip here with a clamping device, since such a round wire is only frictionally engaged and not form-fit to grip. The winding takes place substantially around the central axis of the spiral spring. However, the coil spring is not wound exactly evenly, since some of the turns of the coil springs should abut each other, so that there is generated during the tension of the coil spring, a friction torque that prevents a swinging of the coil spring. This damping effect thus acting friction can also be adjusted exactly as a result of the rectangular profile.

Um die gesamte Spiralfederlänge auszunutzen, kann der gebogene bzw. abgewinkelte Bereich in besonders vorteilhafter Weise das bezüglich der Zentralachse radial äußere Ende der Spiralfeder sein.In order to utilize the entire spiral spring length, the bent or angled region can be in a particularly advantageous manner the radially outer end of the spiral spring relative to the central axis.

In besonders vorteilhafter Weise ist das radial äußere Ende der Spiralfeder gemäß Patentanspruch 4 im unbelasteten Zustand des Flügelzellennockenwellenverstellers in einem Winkel geringfügig unter 90° - vorzugsweise 88° - abgewinkelt. Damit wird erreicht, dass die Spiralfeder zumindest im Betrieb des Nockenwellenverstellers an der Seitenebene anliegt und über Reibung dämpft. Damit wird verhindert, dass die Spiralfeder sich im Betrieb aufschwingt und aus den Befestigungen herausspringt. Der Winkel kann in einer besonders vorteilhaften Weiterbildung so gewählt werden, dass die Spiralfeder bereits im unbelasteten Zustand des Nockwellenverstellers an der Seitenebene anliegt. Diese dämpfende und betriebssichernde Maßnahme gemäß Patentanspruch 4 ist von besonderem Vorteil, wenn die Spiralfeder offen - d.h. ohne Schutzhaube - auf dem Nockenwellenversteller aufliegt. Dieser Winkel von unter 90° biegt sich infolge seiner Steifigkeit im Betrieb nur so gering auf, dass noch immer eine Verdrehsicherung gegenüber dem Stator gewährleistet ist.In a particularly advantageous manner, the radially outer end of the coil spring according to claim 4 in the unloaded state of the Flügelzellennockenwellenverstellers at an angle slightly below 90 ° - preferably 88 ° - angled. This ensures that the coil spring at least in operation of the camshaft adjuster rests against the side plane and damps friction. This prevents the coil spring from swinging during operation and jumping out of the fixings. The angle can be selected in a particularly advantageous development so that the coil spring rests already in the unloaded state of the Nockwellenverstellers on the side plane. This damping and operationally secure measure according to claim 4 is of particular advantage when the coil spring is open - i. without protective cover - rests on the camshaft adjuster. This angle of less than 90 °, due to its rigidity during operation, bends only so slightly that an anti-rotation lock against the stator is still ensured.

In analoger Weise kann das radial inneren Ende drehfest gegenüber dem Rotor festgelegt werden. Dazu kann das innere Ende beispielsweise durch die Seitenebene in eine Aufnahmevertiefung des Rotors eingesteckt werden. In vielen Fällen ist es jedoch für die drehfeste Verbindung gegenüber dem Rotor vorteilhafter, die Spiralfeder am radial inneren Ende radial nach innen zu biegen und in eine radial ausgerichtete Vertiefung eines drehfest mit dem Rotor verbundenen oder einteilig mit dem Rotor ausgeführten Bauteils eingreifen zu lassen. Ein solches drehfest mit dem Rotor verbundenes Bauteil ist der sogenannte Federadapter.In an analogous manner, the radially inner end can be fixed against rotation relative to the rotor. For this purpose, the inner end can be inserted, for example through the side plane in a receiving recess of the rotor. In many cases, however, it is more advantageous for the non-rotatable connection relative to the rotor to bend the coil spring radially inwardly at the radially inner end and to engage in a radially aligned recess of a rotatably connected to the rotor or integrally formed with the rotor component. Such a rotatably connected to the rotor component is the so-called spring adapter.

Patentanspruch 9 zeigt eine besonders vorteilhafte Ausgestaltung der Erfindung. Demzufolge weist das rechteckige Profil der Spiralfeder zwei gegenüber liegende Kantenlängen auf, von den die beiden anderen Kantenlängen abweichen, wobei die kürzeren Kantenlängen der Seitenebene zugewandt bzw. von dieser abgewandt sind. Vereinfacht bedeutet dies, dass das rechteckig Profil der Spiralfeder "hochkant" auf der Seitenebene steht. Somit ist die Spiralfeder in besonders vorteilhafter Weise am abgewinkelten Bereich in der steiferen Richtung gebogen. Damit ist dieser abgewinkelte Bereich zum einen im Betrieb des Flügelzellennockenwellenverstellers auch schwerer auzubiegen so dass die Feder nicht aus der Befestigung am Stator herausrutschen kann. Zum anderen ist die Spiralfeder in Drehrichtung um die Zentralachse weicher, was deren Funktion verbessert. Auch ist es mit dieser Ausrichtung des Profils möglich, mehr Windungen mit mehr Reibung im gleichen Bauraum unterzubringen.Claim 9 shows a particularly advantageous embodiment of the invention. Consequently, the rectangular profile of the spiral spring has two opposite edge lengths, deviate from the other two edge lengths, the shorter edge lengths facing the side or facing away from this. Simplified, this means that the rectangular profile of the spiral spring "upright" stands on the page level. Thus, the coil spring is bent in a particularly advantageous manner at the angled portion in the stiffer direction. Thus, this angled area on the one hand during operation of the Flügelzellennockenwellenverstellers also heavier auzubiegen so that the spring can not slip out of the attachment to the stator. On the other hand, the coil spring is softer in the direction of rotation about the central axis, which improves their function. It is also possible with this orientation of the profile to accommodate more turns with more friction in the same space.

Weitere Vorteile der Erfindung gehen aus den weiteren Patentansprüchen, der Beschreibung und der Zeichnung vor.Further advantages of the invention will become apparent from the other claims, the description and the drawings.

Die Erfindung ist nachfolgend anhand eines Ausführungsbeispiels näher erläutert.The invention is explained in more detail with reference to an embodiment.

Dabei zeigenShow

  • Fig. 1 einen Flügelzellennockenwellenversteller, Fig. 1 a vane-cell camshaft adjuster,
  • Fig. 2 den Flügelzellennockenwellenversteller aus Fig. 1 in einer perspektivischen Ansicht von außen, wobei u. a. ein Statordeckel und eine Spiralfeder ersichtlich sind, Fig. 2 the vane-cell camshaft adjuster Fig. 1 in a perspective view from the outside, wherein, inter alia, a stator cover and a spiral spring are visible,
  • Fig. 3 den im Bereich einer Aufnahmevertiefung für die Spiralfeder geschnittenen dargestellten Statordeckel aus Fig. 2 und Fig. 3 the cut in the region of a receiving recess for the coil spring illustrated stator cover Fig. 2 and
  • Fig. 4 ein Detail aus Fig. 3 im Bereich der Aufnahmevertiefung, wobei ein Schnitt durch die Spiralfeder verläuft. Fig. 4 a detail from Fig. 3 in the region of the receiving recess, wherein a section runs through the coil spring.

Mit einem Flügelzellennockenwellenversteller wird während des Betriebes eines Verbrennungsmotors die Winkellage zwischen der Kurbel- und der Nockenwelle verändert. Durch Verdrehen der Nockenwelle werden die Öffnungs- und Schliesszeitpunkte der Gaswechselventile so verschoben, dass der Verbrennungsmotor bei der jeweiligen Drehzahl seine optimale Leistung bringt. Der Flügelzellennockenwellenversteller ermöglicht dabei eine stufenlose Verstellung der Nockenwelle relativ zur Kurbelwelle. Der Flügelzellennockenwellenversteller hat einen zylindrischen Stator 1, der drehfest mit einem in Fig. 2 ersichtlichen Zahnrad 2 verbunden ist. Im Ausführungsbeispiel ist das Zahnrad 2 ein Kettenrad, über das eine nicht näher dargestellte Kette geführt ist. Das Zahnrad 2 kann aber auch ein Zahnriemenrad sein, über das eine Antriebsriemen als Antriebselement geführt ist. Über dieses Antriebselement und das Zahnrad 2 ist der Stator 1 mit der Kurbelwelle in bekannter Weise antriebsverbunden.With a Flügelzellennockenwellenwellenversteller the angular position between the crankshaft and the camshaft is changed during operation of an internal combustion engine. By turning the camshaft, the opening and closing times of the gas exchange valves are shifted so that the internal combustion engine brings its optimal performance at the respective speed. Of the Flügelzellennockenwellenversteller allows infinite adjustment of the camshaft relative to the crankshaft. The Flügelzellennockenwellenwellenversteller has a cylindrical stator 1, the rotation with a in Fig. 2 apparent gear 2 is connected. In the exemplary embodiment, the gear 2 is a sprocket over which a chain, not shown, is guided. However, the gear 2 may also be a toothed belt wheel over which a drive belt is guided as a drive element. About this drive element and the gear 2, the stator 1 is drivingly connected to the crankshaft in a known manner.

Der Stator 1 und das Zahnrad 2 können alternativ auch einstückig miteinander ausgebildet sein, wenn die andere Seite des Stators 1 öffenbar ist. Dabei können der Stator 1 und das Zahnrad 2 auch aus metallischem Werkstoff oder auch aus hartem Kunststoff bestehen. Als metallische Werkstoffe kommen u. a. Sintermetalle, Stahlbleche und Aluminium in Frage. Der Stator 1 umfasst einen zylindrischen Statorgrundkörper 3, an dessen Innenseite radial nach innen in gleichen Abständen Stege 4 abstehen. Zwischen benachbarten Stegen 4 werden Druckräume 5 gebildet, in die, über ein nicht näher dargestelltes 4/3-Wege-Ventil gesteuert, Druckmedium eingebracht wird. Zwischen benachbarten Stegen 4 ragen Flügel 6, die radial nach außen von einem zylindrischen Rotorgrundkörper 7 eines Rotors 8 abstehen. Diese Flügel 6 unterteilen die Druckräume 5 zwischen den Stegen 4 jeweils in zwei Druckkammern 9 und 10.The stator 1 and the gear 2 may alternatively be integrally formed with each other when the other side of the stator 1 is openable. In this case, the stator 1 and the gear 2 may also be made of metallic material or of hard plastic. As metallic materials u. a. Sintered metals, steel sheets and aluminum in question. The stator 1 comprises a cylindrical stator base body 3, on the inside of which protrude webs 4 at equal intervals radially inwardly. Between adjacent webs 4 pressure chambers 5 are formed, in which, controlled by a non-illustrated 4/3-way valve, pressure medium is introduced. Between adjacent webs 4 protrude wings 6, which protrude radially outward from a cylindrical rotor body 7 of a rotor 8. These wings 6 divide the pressure chambers 5 between the webs 4 in each case in two pressure chambers 9 and 10th

Die Stege 4 liegen mit ihren Stirnseiten dichtend an der Außenmantelfläche des Rotorgrundkörpers 7 an. Die Flügel 6 ihrerseits liegen mit ihren Stirnseiten dichtend an der zylindrischen Innenwand des Statorgrundkörpers 3 an.The webs 4 lie with their end faces sealingly against the outer circumferential surface of the rotor base body 7. The wings 6 in turn lie with their end faces sealingly against the cylindrical inner wall of the stator main body 3.

Der Rotor 8 ist drehfest mit der nicht näher dargestellten Nockenwelle verbunden. Um die Winkellage zwischen der Nockenwelle und der Kurbelwelle zu verändern, wird der Rotor 8 relativ zum Stator 1 gedreht. Hierzu wird je nach gewünschter Drehrichtung das Druckmedium in den Druckkammern 9 oder 10 unter Druck gesetzt, während die jeweils anderen Druckkammern 10 oder 9 zum Tank hin entlastet werden.The rotor 8 is rotatably connected to the camshaft, not shown. In order to change the angular position between the camshaft and the crankshaft, the rotor 8 is rotated relative to the stator 1. For this purpose, depending on the desired direction of rotation, the pressure medium in the pressure chambers 9 or 10 is pressurized, while the respective other pressure chambers 10 or 9 are relieved to the tank.

Der Stator 1 ist einteilig als ein in Fig. 2 ersichtlicher topfförmiger Statordeckel ausgeführt, welcher fest mit dem Zahnrad 2 verschraubt ist. Der Statordeckel ist dabei als Gussteil mit einer Gusskante 20 ausgeführt. Die Stirnflächen der Stege 4 und der Flügel 6 liegen einerseits dicht am Zahnrad 2 und andererseits dicht am Statordeckel an. Dieser Statordeckel und das Zahnrad 2 begrenzen außerdem die Druckräume 5 zwischen den Flügeln 4 in Axialrichtung. Damit bei ausgeschaltetem Verbrennungsmotor - d.h. bei unbelastetem Flügelzellennockenwellenversteller - der Rotor 8 die für den Motorstart nötige frühe Auslassnockenwellenstellung einnimmt, wird der Rotor 8 durch eine Spiralfeder 12 in eine Ausgangslage gedreht. In dieser Ausgangslage erfolgt eine Verriegelung zwischen dem Rotor 8 und dem Stator 1 beispielsweise durch einen federbelasteten Verriegelungsbolzen 21. Dieser ist in einem der Flügel 6 untergebracht. Bei Druckabfall in den Druckkammern 9, 10 wird dieser Verriegelungsbolzen 21 durch die Federkraft einer nicht näher dargestellten Schraubendruckfeder in eine Verriegelungsstellung bewegt, in der dieser in eine Verriegelungsöffnung des Stators 1 eingreift. Beim Motorstart wird der Verrieglungsbolzen 21 durch das Druckmedium gegen die Federkraft belastet und zurückgeschoben, so dass der Rotor 8 vom Stator 1 entriegelt wird und der Flügelzellennockenwellenversteller in seine Regelstellung gelangen kann.The stator 1 is in one piece as an in Fig. 2 apparent pot-shaped stator cover running, which is firmly bolted to the gear 2. The stator cover is designed as a casting with a cast edge 20. The end faces of the webs 4 and the wings 6 are on the one hand close to the gear 2 and on the other hand close to the stator cover. This stator cover and the gear 2 also limit the pressure chambers 5 between the wings 4 in the axial direction. Thus, when the internal combustion engine - ie at unloaded Flügelzellennockenwellenversteller - the rotor 8 occupies the necessary for the engine start early Auslaßnockenwellenstellung, the rotor 8 is rotated by a coil spring 12 in an initial position. In this initial position, a lock between the rotor 8 and the stator 1, for example, by a spring-loaded locking pin 21. This is accommodated in one of the wings 6. When there is a pressure drop in the pressure chambers 9, 10, this locking bolt 21 is moved by the spring force of a helical compression spring, not shown, into a locking position in which it engages in a locking opening of the stator 1. When the engine is started, the locking bolt 21 is loaded by the pressure medium against the spring force and pushed back, so that the rotor 8 is unlocked from the stator 1 and the Flügelzellennockenwellenversteller can get into its control position.

Die Spiralfeder 12 liegt auf einer senkrecht zur Zentralachse des Flügelzellennockenwellenverstellers auf dem Statordeckel angeordneten Seitenebene 22 auf. Die Spiralfeder 12 ist mit einem radial inneren Ende 14 drehfest mit dem Rotor 8 verbunden. Das radial äußere Ende 15 der Spiralfeder 12 ist drehfest und formschlüssig am Stator 1 abgestützt. Dazu ist das radial äußere Ende 15 der Spiralfeder 12 im unbelasteten Zustand des Flügelzellennockenwellenverstellers in einem Winkel α von 88° abgewinkelt. Dieses abgewinkelte Ende 15 ist dabei in eine Aufnahmevertiefung 16 des Stators 1 eingesteckt. Das radial innere Ende 14 der Spiralfeder 12 ist radial nach innen gebogen und greift in eine radial ausgerichtete Aufnahmevertiefung 24 eines drehfest mit dem Rotor 8 verbundenen Federadapters 23 ein. Dieser Federadapter 23 weist einen nicht näher ersichtlichen Zapfen auf, der mittels einer Presspassung in eine Nabe des Rotors 8 gesteckt ist. Somit ist der Federadapter 23 drehfest gegenüber dem Rotor 8. Das radial nach innen gebogene Ende 14 und die radiale Aufnahmevertiefung 24 weisen dabei auf die Zentralachse 25 des Flügelzellennockenwellenverstellers.The coil spring 12 rests on a side plane 22 arranged perpendicular to the central axis of the vane-cell camshaft adjuster on the stator cover. The coil spring 12 is rotatably connected to the rotor 8 with a radially inner end 14. The radially outer end 15 of the coil spring 12 is rotatably and positively supported on the stator 1. For this purpose, the radially outer end 15 of the coil spring 12 in the unloaded state of the Flügelzellennockenwellenverstellers angled at an angle α of 88 °. This angled end 15 is inserted into a receiving recess 16 of the stator 1. The radially inner end 14 of the coil spring 12 is bent radially inwardly and engages in a radially aligned receiving recess 24 of a rotatably connected to the rotor 8 spring adapter 23 a. This spring adapter 23 has an unspecified pin, which by means of a press fit into a Hub of the rotor 8 is inserted. Thus, the spring adapter 23 is rotationally fixed relative to the rotor 8. The radially inwardly bent end 14 and the radial receiving recess 24 in this case point to the central axis 25 of the Flügelzellennockenwellenverstellers.

Die Spiralfeder 12 weist ein rechteckiges Profil auf, welches "hochkant" auf der Seitenebene 22 aufliegt. D.h., zwei gegenüber liegende Kantenlängen 26a, 26b des rechteckigen Profils weichen von den beiden anderen Kantenlängen 27a, 27b ab. Die eine kurze Kantenlängen 26a ist der Seitenebene 22 zugewandt, wohingegen die andere kurze Kantenlänge 26b von der Seitenebene 22 abgewandt ist. Die eine lange Kantenlänge 27a weist radial nach innen, wohingegen die andere lange Kantenlänge 27b radial nach außen weist.The coil spring 12 has a rectangular profile which rests "edgewise" on the side plane 22. That is, two opposite edge lengths 26a, 26b of the rectangular profile deviate from the other two edge lengths 27a, 27b. The one short edge length 26a faces the side plane 22, whereas the other short edge length 26b faces away from the side plane 22. The one long edge length 27a points radially inwards, whereas the other long edge length 27b faces radially outward.

In Fig. 4 ist ersichtlich, dass die besagte Aufnahmevertiefung 24 des Stators 1 korrespondierend zum Profil der Spiralfeder 12 ebenfalls eine rechteckige Grundform mit abweichenden Kantenlängen aufweist. Die längeren Kanten 29a, 29b der Aufnahmevertiefung 24 sind dabei gegenüber einer Tangenten des Stators 1 nach innen geneigt, so dass sich zwischen

  • der Längserstreckung 40 der Querschnittsfläche der Ausnahmevertiefung 24 und
  • einer von der Mitte der Querschnittsfläche der Ausnahmevertiefung 24 zur Zentralachse 25 verlaufenden Linie 41
    ein Winkel β < 90° ergibt. Die kurzen Kanten 28a, 28b stehen im rechten Winkel zu den langen Kanten 29a, 29b.
In Fig. 4 it can be seen that the said receiving recess 24 of the stator 1 corresponding to the profile of the coil spring 12 also has a rectangular basic shape with different edge lengths. The longer edges 29a, 29b of the receiving recess 24 are inclined relative to a tangent of the stator 1 inwards, so that between
  • the longitudinal extent 40 of the cross-sectional area of the exception recess 24 and
  • a line 41 extending from the center of the cross-sectional area of the exception recess 24 to the central axis 25
    an angle β <90 °. The short edges 28a, 28b are at right angles to the long edges 29a, 29b.

In Fig. 2 ist ersichtlich, dass die Wicklungen der Spiralfeder 12 bei unbelastetem Flügelzellennockenwellenversteller aneinander anliegen.In Fig. 2 It can be seen that the windings of the coil spring 12 abut each other with unloaded Flügelzellennockenwellenversteller.

Der Flügelzellennockenwellenversteller kann bei einer Einlassnockenwelle und/oder eine Auslassnockenwelle Anwendung finden. Ebenso kann der Flügelzellennockenwellenversteller Anwendung bei einer einzigen Nockenwelle finden, die sowohl die Einlass-Gaswechselventile als auch die Auslass-Gaswechselventile verstellt.The vane camshaft adjuster may be applied to an intake camshaft and / or an exhaust camshaft. Likewise, the vane cam phaser may apply to a single camshaft find that both the inlet gas exchange valves and the outlet gas exchange valves adjusted.

Das innere Ende der Spiralfeder ist mit einem Bauteil verbunden, welche drehfest zum Rotor ist. Dieses Bauteil kann somit der Rotor selber sein. Ebenso kann es ein Zapfen oder eine Hülse sein, die mit dem Rotor formschlüssig oder über einen Pressverband mit oder ohne Riffelung verbunden ist. Ein solcher Zapfen bzw. eine solche Hülse wird auch als Federadapter bezeichnet, da zumindest eine von deren Funktionen die Verbindung zwischen dem Rotor und der Spiralfeder ist.The inner end of the coil spring is connected to a component which is rotationally fixed to the rotor. This component can thus be the rotor itself. Likewise, it may be a pin or a sleeve which is positively connected to the rotor or via a press fit with or without corrugation. Such a pin or such a sleeve is also referred to as a spring adapter, since at least one of their functions is the connection between the rotor and the coil spring.

Das rechteckiges Profil der Spiralfeder kann auch quadratisch sein.The rectangular profile of the coil spring can also be square.

Auf den Statordeckel kann noch eine zusätzlicher Federdeckel aufgesetzt sein, welche die Spiralfeder zum einen vor Schmutz und anderen Umwalteinflüssen schützt und zum anderen einen Reibpartner und eine "Verliersicherung" für die Spiralfeder bilden kann. Diese Schutzhaube kann aber auch beispielsweise aus Kunststoff gefertigt sein. Ist der Flügelzellennockenwellenversteller jedoch ohnehin durch einen Kettenkasten oder Riemenkasten geschützt, so ist u. U. keine zusätzliche Schutzhaube notwendig.On the stator cover can still be placed an additional spring cover, which protects the coil spring on the one hand against dirt and other Umwalteinflüssen and on the other hand can form a friction partner and a "captive" for the coil spring. But this guard can also be made for example of plastic. However, if the Flügelzellennockenwellenwellensteller protected anyway by a chain case or belt box, so u. U. no additional protective cover necessary.

In einer alternativen Ausgestaltung wird der Nockenwellenversteller nicht durch einen Zahnriemen oder eine Kette angetrieben sondern von einem Zahnrad eines achsversetzt angeordneten zweiten Nockenwellenverstellers.In an alternative embodiment, the camshaft adjuster is not driven by a toothed belt or a chain but by a gear of an axially offset second camshaft adjuster.

Bei den beschriebenen Ausführungsformen handelt es sich nur um beispielhafte Ausgestaltungen. Eine Kombination der beschriebenen Merkmale für unterschiedliche Ausführungsformen ist ebenfalls möglich. Weitere, insbesondere nicht beschriebene Merkmale der zur Erfindung gehörenden Vorrichtungsteile, sind den in den Zeichnungen dargestellten Geometrien der Vorrichtungsteile zu entnehmen.The described embodiments are only exemplary embodiments. A combination of the described features for different embodiments is also possible. Further, in particular not described features of the device parts belonging to the invention are to be taken from the geometries of the device parts shown in the drawings.

Claims (10)

Flügelzellennockenwellenversteller mit einer senkrecht zu dessen Zentralachse (25) angeordneten Seitenebene (22), auf welcher eine Spiralfeder (12) aufliegt, welche bestrebt ist, einen Rotor (8) gegenüber einem Stator (1) in einer bestimmten Winkelstellung zu halten,
dadurch gekennzeichnet, dass
diese Spiralfeder (12) ein rechteckiges Profil aufweist, wobei ein Federabschnitt durch die Seitenebene (22) hindurch abgewinkelt ist, so dass die Spiralfeder (12) drehfest formschlüssig gegenüber dem Stator (1) oder dem Rotor (8) abgestützt ist.Flügelzellennockenwellenwellenversteller with a perpendicular to the central axis (25) arranged side plane (22) on which a coil spring (12) rests, which tends to keep a rotor (8) relative to a stator (1) in a certain angular position,
characterized in that
this spiral spring (12) has a rectangular profile, wherein a spring section is angled through the side plane (22), so that the spiral spring (12) is non-rotatably positively supported relative to the stator (1) or the rotor (8). Flügelzellennockenwellenversteller nach Patentanspruch 1, dadurch gekennzeichnet, dass
der Federabschnitt das bezüglich der Zentralachse (25) radial äußere Ende (15) der Spiralfeder (12) ist, wobei dieses Ende (15) drehfest formschlüssig gegenüber dem Stator (1) abgestützt ist.Flügelzellennockenwellenversteller according to claim 1, characterized in that
the spring section is the radially outer end (15) of the spiral spring (12) with respect to the central axis (25), wherein this end (15) is non-rotatably supported in a form-locking manner relative to the stator (1). Flügelzellennockenwellenversteller nach Patentanspruch 2,
dadurch gekennzeichnet, dass
der Federabschnitt in einer Aufnahmevertiefung (16) des Stators (1) eingesteckt ist.Flügelzellennwellenwellenversteller according to claim 2,
characterized in that
the spring portion in a receiving recess (16) of the stator (1) is inserted. Flügelzellennockenwellenversteller nach Patentanspruch 2 oder 3,
dadurch gekennzeichnet, dass
das radial äußere Ende (15) der Spiralfeder (12) im unbelasteten Zustand des Flügelzellennockenwellenverstellers in einem Winkel geringfügig unter 90° - vorzugsweise 88° - abgewinkelt ist.Flügelzellennwellenwellenversteller according to claim 2 or 3,
characterized in that
the radially outer end (15) of the spiral spring (12) in the unloaded state of the Flügelzellennockenwellenverstellers at an angle slightly below 90 ° - preferably 88 ° - is angled. Flügelzellennockenwellenversteller nach einem der vorhergehenden Patentansprüche, dadurch gekennzeichnet, dass
die Spiralfeder (12) an einem radial inneren Ende (14) drehfest gegenüber der Rotor (8) festgelegt ist.Flügelzellennockenwellenversteller according to any one of the preceding claims, characterized in that
the coil spring (12) is secured against rotation relative to the rotor (8) at a radially inner end (14). Flügelzellennockenwellenversteller nach Patentanspruch 5,
dadurch gekennzeichnet, dass
die Spiralfeder (12) am radial inneren Ende (14) radial nach innen gebogen ist und in eine radial ausgerichtete Vertiefung (24) eines drehfest mit dem Rotor (8) verbundenen oder einteilig mit dem Rotor (8) ausgeführten Bauteils eingreift.Flügelzellennwellenwellenversteller according to claim 5,
characterized in that
the spiral spring (12) is bent radially inwards at the radially inner end (14) and engages in a radially aligned recess (24) of a component connected in a rotationally fixed manner to the rotor (8) or integrally formed with the rotor (8). Flügelzellennockenwellenversteller nach Patentanspruch 6,
dadurch gekennzeichnet, dass
das Bauteil ein separat vom Rotor (8) ausgeführter Federadapter (23) ist.Flügelzellennockenwellenversteller according to claim 6,
characterized in that
the component is a spring adapter (23) designed separately from the rotor (8). Flügelzellennockenwellenversteller nach einem der vorhergehenden Patentansprüche, dadurch gekennzeichnet, dass
zwei gegenüber liegende Kantenlängen (26a, 26b) des rechteckigen Profils von den beiden anderen Kantenlängen (27a, 27b) abweichen, wobei die kürzeren Kantenlängen (26a, 26b) der Seitenebene (22) zugewandt bzw. von dieser abgewandt sind.Flügelzellennockenwellenversteller according to any one of the preceding claims, characterized in that
two opposite edge lengths (26a, 26b) of the rectangular profile deviate from the other two edge lengths (27a, 27b), the shorter edge lengths (26a, 26b) facing the side plane (22) or facing away therefrom. Flügelzellennockenwellenversteller nach Patentanspruch 8,
dadurch gekennzeichnet, dass
eine Aufnahmevertiefung (16) des Stators (1) korrespondierend zum Profil der Spiralfeder (12) ebenfalls eine rechteckige Grundform mit abweichenden Kantenlängen aufweist, wobei die längeren Kanten (29a, 29b) nach innen geneigt sind.Flügelzellennwellenwellenversteller according to claim 8,
characterized in that
a receiving recess (16) of the stator (1) corresponding to the profile of the spiral spring (12) also has a rectangular basic shape with different edge lengths, wherein the longer edges (29a, 29b) are inclined inwards. Flügelzellennockenwellenversteller nach einem der vorhergehenden Patentansprüche, dadurch gekennzeichnet, dass
die Wicklungen bei unbelastetem Flügelzellennockenwellenversteller aneinander anliegen.Flügelzellennockenwellenversteller according to any one of the preceding claims, characterized in that
the windings abut each other with unloaded Flügelzellennockenwellenversteller.
EP09009671A 2008-09-22 2009-09-10 Wing cell camshaft adjuster Not-in-force EP2166199B1 (en)

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EP0356018A1 (en) 1988-08-18 1990-02-28 Eaton Corporation Sealed camshaft phase change device
US6155219A (en) 1998-09-10 2000-12-05 Mitsubishi Denki Kabushiki Kaisha Valve timing adjusting apparatus for internal combustion engine
WO2001061154A1 (en) * 2000-02-17 2001-08-23 Ina-Schaeffler Kg Device for changing the control times of gas exchange valves in an internal combustion engine
WO2003085238A1 (en) * 2002-04-11 2003-10-16 Ina-Schaeffler Kg Device for modifying the timing of gas exchange valves of an internal combustion engine, in particular a device for hydraulically adjusting the rotational angle of a camshaft in relation to a crankshaft
US6619248B1 (en) * 2002-04-17 2003-09-16 Ina-Schaeffler Kg Device for altering the control timing of gas exchange valves of an internal combustion engine, especially an apparatus for hydraulic rotational angle adjustment of a camshaft relative to a crankshaft
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WO2012062495A1 (en) * 2010-11-11 2012-05-18 Schaeffler Technologies AG & Co. KG Camshaft adjuster for an internal combustion engine
US8967107B2 (en) 2010-11-11 2015-03-03 Schaeffler Technologies AG & Co. KG Camshaft adjuster for an internal combustion engine
WO2012107122A1 (en) * 2011-02-08 2012-08-16 Schaeffler Technologies AG & Co. KG Camshaft adjuster having a spring
CN103380270A (en) * 2011-02-08 2013-10-30 谢夫勒科技股份两合公司 Camshaft adjuster having a spring
US9441506B2 (en) 2011-02-08 2016-09-13 Schaeffler Technologies AG & Co. KG Camshaft phaser having a spring
CN103380270B (en) * 2011-02-08 2017-12-08 舍弗勒技术股份两合公司 Camshaft adjuster with spring
EP2604817A1 (en) * 2011-12-12 2013-06-19 Schaeffler Technologies AG & Co. KG Camshaft adjuster
CN103161540A (en) * 2011-12-12 2013-06-19 谢夫勒科技股份两合公司 Camshaft adjuster
US8925507B2 (en) 2011-12-12 2015-01-06 Schaeffler Technologies Gmbh & Co. Kg Camshaft adjuster
CN103161540B (en) * 2011-12-12 2017-07-21 舍弗勒技术股份两合公司 Camshaft adjuster

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ATE488673T1 (en) 2010-12-15
EP2166199B1 (en) 2010-11-17
DE102008048386B4 (en) 2016-12-01
DE502009000184D1 (en) 2010-12-30
KR20100033947A (en) 2010-03-31
US8230832B2 (en) 2012-07-31
DE102008048386A1 (en) 2010-04-29
KR101549463B1 (en) 2015-09-02
US20100075765A1 (en) 2010-03-25

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