EP1443185B1 - Camshaft phasing device for an internal combustion engine of a vehicle and corresponding centre tool - Google Patents

Camshaft phasing device for an internal combustion engine of a vehicle and corresponding centre tool Download PDF

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Publication number
EP1443185B1
EP1443185B1 EP04001789A EP04001789A EP1443185B1 EP 1443185 B1 EP1443185 B1 EP 1443185B1 EP 04001789 A EP04001789 A EP 04001789A EP 04001789 A EP04001789 A EP 04001789A EP 1443185 B1 EP1443185 B1 EP 1443185B1
Authority
EP
European Patent Office
Prior art keywords
stator
rotor
camshaft
drive wheel
sprocket
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.)
Expired - Lifetime
Application number
EP04001789A
Other languages
German (de)
French (fr)
Other versions
EP1443185A1 (en
EP1443185B9 (en
Inventor
Ralf Naumann
Gerold Sluka
Andreas Knecht
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
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 Hydraulik Ring GmbH filed Critical Hydraulik Ring GmbH
Publication of EP1443185A1 publication Critical patent/EP1443185A1/en
Application granted granted Critical
Publication of EP1443185B1 publication Critical patent/EP1443185B1/en
Publication of EP1443185B9 publication Critical patent/EP1443185B9/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • F01L1/022—Chain drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F01L1/053—Camshafts overhead type
    • 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
    • F01L1/26—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder
    • 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
    • F01L1/024—Belt drive
    • 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
    • F01L1/026—Gear drive
    • 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
    • F01L2301/00—Using particular materials
    • 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
    • F01L2303/00—Manufacturing of components used in valve arrangements
    • 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
    • F01L2303/00—Manufacturing of components used in valve arrangements
    • F01L2303/01—Tools for producing, mounting or adjusting, e.g. some part of the distribution
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49293—Camshaft making
    • 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
    • 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 invention relates to a device for adjusting a camshaft of an internal combustion engine of a motor vehicle according to the preamble of claim 1.
  • a known adjusting device (FIG. 2) has a stator 1, which surrounds a rotor 4.
  • the rotor 4 is rotatably connected to the camshaft 5.
  • the rotor 4 has a collar 4a for receiving the drive wheel 30.
  • This collar 4a projects axially beyond the end face of the rotor.
  • the preparation of the federal 4a is complicated and expensive, since it must be made by turning operations.
  • centering or positioning elements 34 are provided, which engage in bores in the drive wheel and in the stator 1. The preparation of these centering holes is also complicated and expensive.
  • the camshaft is provided in the region of the rotor with a thickened portion on which the drive wheel is seated.
  • the thickened portion is spaced from the rotor by a radial shoulder on which the drive wheel rests.
  • the thickened camshaft portion has a diameter that differs only slightly from the average diameter of the camshaft.
  • the invention has the object of providing the generic device in such a way that it can be easily and inexpensively manufactured and assembled.
  • the drive wheel is aligned in the direction of rotation relative to the stator by the centering element and cooperating with him counter-element.
  • the centering element is provided on the stator casing, so that the stator does not have to be provided with centering holes.
  • the drive wheel which requires no center hole as a result of the counter element.
  • the stator can be easily manufactured as a sintered part.
  • the drive wheel is centered by the collar of the camshaft.
  • the rotor can be made very simple, especially since a collar is not required on the rotor. Therefore, the rotor can essentially have two flat end faces, which can be finished after the usual sintering of the rotor in a simple grinding process.
  • the adjusting device is a camshaft adjuster with which a camshaft in an internal combustion engine of a motor vehicle can be adjusted in a known manner. Since the formation of such an adjustment is known, it will be explained only briefly. It has a stator 1, which has a cylindrical shell 2, projecting from the radially inwardly (not shown) webs, between which pressure chambers are formed. The webs lie with their end faces sealingly against a base body 3 of a rotor 4, which is rotatably connected to a camshaft 5. From the rotor main body 3 are radially from wings 6, which abut with their end faces sealingly against the inner wall 7 of the stator shell 2.
  • each pressure chamber of the stator 1 is a wing whose width is smaller than the distance between the respective pressure chamber limiting side walls of the stator webs.
  • the rotor 4 can opposite the stator 1 are relatively far rotated until the rotor blades 6 abut depending on the direction of rotation of one of the two boundary walls of the pressure chambers of the stator 1.
  • the rotor blades 6 are acted upon by a pressure medium from both sides, depending on the desired direction of rotation of the rotor 4 relative to the stator 1.
  • the pressure medium controlled by at least one (not shown) valve, via holes 8 or 9 in the camshaft 5 is supplied.
  • the pressure medium controlled by at least one (not shown) valve, via holes 8 or 9 in the camshaft 5 is supplied.
  • the pressure medium controlled by at least one (not shown) valve, via holes 8 or 9 in the camshaft 5 is supplied.
  • the pressure medium controlled by at least one (not shown) valve, via holes 8 or 9 in the camshaft 5 is supplied.
  • a cover plate 14 which is mounted with distributed over the circumference arranged screws or threaded bolt 15 on the stator 1.
  • the outer diameter of the cover plate 14 corresponds to the outer diameter of the stator shell 2.
  • the cover plate 14 radially engages over the rotor base body 3 and has a central opening 16 in which a screw head 17 of a screw 18 is located, with which the camshaft 5 is rotatably connected to the rotor 4 ,
  • the camshaft 5 has at a distance from its free end a radially outwardly projecting collar 19, on which a flange 20 is seated. It is connected to the stator 1 by the screws 15 distributed over the circumference.
  • the rotor 4 or its base body 3 has two flat end faces 21 and 22.
  • the rotor 4 is advantageously a sintered part. After sintering the rotor 4, the two flat end faces 21, 22 can be finished by a simple grinding process. With the end face 22 of the rotor 4 abuts against the cover plate 14.
  • the opposite end face 21 is provided with a central recess 23, which serves to center the rotor 4 on the camshaft 5.
  • the camshaft 5 is advantageously formed in one piece and carries the collar 19. With the projecting beyond the collar 19 end, the camshaft 5 is located with its outer circumferential surface 25 on the inner wall 26 of the recess 23 of the Rotor on. As a result, the camshaft 5 is aligned radially relative to the rotor 4 in a simple manner. The axial alignment is done by conditioning the collar 19 on the flat end 21 of the rotor. 4
  • the recess 23 in the rotor 4 may be provided during the sintering process, so that a subsequent incorporation of this central recess 23 in the rotor 4 is not required.
  • the sprocket (not shown) is centered over the flange 20 by the camshaft 5.
  • the flange 20 may be formed as a sprocket.
  • the collar 19 is used for mounting 27 of the flange 20.
  • the camshaft 5 has an inner diameter which is larger than the outer diameter of the screw 18.
  • the sleeve 24 is inserted, through which this annular space 28 is divided into the two supply lines 10 and 11 for the pressure medium. These leads 10, 11 are thus each annular spaces, which are separated by the sleeve 24 from each other.
  • Fig. 3 shows an adjusting device in the form of a camshaft adjuster, in which on the collar 19 of the camshaft 5, a sprocket 30 is seated.
  • the radial centering of the rotor 4 relative to the camshaft 5 is characterized in that the camshaft 5 with its over the collar 19 axially projecting end on the inner wall 26 of the recess 23 in the end face 21 of Rotor 4 is applied.
  • the sprocket 30 is screwed by threaded bolts 31, which are advantageously distributed over the circumference of the stator 1, frontally screwed to the stator 1.
  • FIGS. 4 to 7 In Fig. 4, one of the webs 32 of the stator 1 can be seen, which abuts the front side of the main body 3 of the rotor 4.
  • One of the rotor blades 6 is shown in FIG. 4, which rests with a side surface on a side wall of the web 32. At least some of the stator webs 32 are penetrated by a respective threaded bolt 31, with which the sprocket 30 is rotatably connected to the stator 1.
  • the sprocket 30 can be aligned in the circumferential direction relative to the stator 1, at least one centering element 33 is provided on the stator casing 2, which is a recess in the outer circumferential surface in the embodiment.
  • the sprocket 30 is provided with a positioning member 34.
  • a mounting tool 36 is used for exact alignment of the sprocket 30 in the circumferential direction relative to the stator 1. It has a base plate 37 on which an alignment element 38 is provided. The base plate 37 is provided with a triangular-shaped depression 39 into which the positioning element 34 engages when attaching the assembly tool 36 to the stator 1. Due to the triangular formation of the recess 39, the positioning element 34 and thus the sprocket 30 is aligned in the direction of rotation relative to the stator 1.
  • the alignment member 38 of the mounting tool 36 engages a groove 40 which is provided in the outside of the shell 2 of the stator 1 and axially between the cover plate 14 and the sprocket 30 extends (Fig. 7). Leave the threaded bolts 31 simply assemble and connect the cover plate 14, the stator 1 and the sprocket 30 firmly together.
  • stator 1 Since in the manner described by the form-locking element 34 and the groove-shaped centering element 33, the alignment of the stator 1 and sprocket 30 in the circumferential direction, the stator 1 can be produced in a simple and cost-effective manner as a sintered part. After sintering, only the contact side of the stator 1 is to be processed for the sprocket 30, preferably to grind.
  • the alignment member 38 is advantageously spring loaded, so that the centering in the circumferential direction between the stator 1 and the sprocket 30 can be independent of the radial orientation of the sprocket 30 relative to the rotor 4.
  • FIG. 8 shows the possibility of aligning the sprocket 30 radially with respect to the rotor 4.
  • a centering mandrel is used as an assembly tool 36, which has a stepped cross-sectional configuration.
  • the gradation is provided so that the sprocket 30 rests on the centering mandrel 36, which in turn rests with its tapered end 41 on the inner wall 26 of the front-side recess 23 of the rotor 4.
  • Dehmhuntn 42 and 43 are provided in the centering, in which via a feed line 44, a pressure medium is supplied.
  • the centering pin 36 In the area of the expansion chambers 42, 43, the centering pin 36 has such a thin wall that it expands elastically under the pressure of the medium. Thereby, any play between the centering mandrel 36 and the sprocket 30 and the rotor 4 is compensated. In this way, the sprocket 30 can be aligned easily and with high accuracy radially relative to the rotor 4.
  • FIG. 9 again shows the centering mandrel 36 as an assembly tool, but without expansion chambers 42, 43. Instead he is in Height of the sprocket 30 and the inner wall 26 of the front-side recess 23 of the rotor 4 are each provided with an annular clearance compensation element 45, 46.
  • This clearance compensation elements 45, 46 may be O-rings, tubular rings with pressurization and the like, which are housed in corresponding circumferential grooves of the centering mandrel 36. Any existing clearance between the centering pin 36 and the sprocket 30 and the rotor 4 is achieved by elastic deformation of these clearance compensation elements 45, 46.
  • the camshaft 5 is inserted into the recess 23 of the rotor 4 and rotatably connected to this end with the rotor.
  • any suitable connection between the camshaft and the rotor may be provided.
  • the adjusting device can also be used for existing camshafts that do not protrude into the rotor, it is possible to use adapters which in this case connect the camshaft to the rotor 4 in a torque-proof manner. In such a case, the pressure medium for rotating the rotor 4 relative to the stator 1 can be supplied via the adapter piece. This has the advantage that the camshaft itself requires no special processing or training.

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

Abstract

The device for the adjustment of a camshaft in an internal combustion engine comprises a rotor (4) rotatable relative to a stator (1) and connected to the camshaft, and at least one drive pinion connected to the rotor. The drive pinion is centered through the camshaft (5), whereby the camshaft has a collar (19) upon which sits the drive pinion. The camshaft protrudes into a recess (23) in the end face (21) of the rotor, and the collar on the camshaft lies axially against the end face of the rotor.

Description

Die Erfindung betrifft eine Einrichtung zur Verstellung einer Nockenwelle einer Brennkraftmaschine eines Kraftfahrzeuges nach dem Oberbegriff des Anspruches 1.The invention relates to a device for adjusting a camshaft of an internal combustion engine of a motor vehicle according to the preamble of claim 1.

Eine bekannte Verstelleinrichtung (Fig. 2) hat einen Stator 1, der einen Rotor 4 umgibt. Der Rotor 4 ist mit der Nockenwelle 5 drehfest verbunden. Außerdem sitzt auf dem Rotor 4 ein als Kettenrad ausgebildetes Antriebsrad 30. Der Rotor 4 hat einen Bund 4a zur Aufnahme des Antriebsrades 30. Dieser Bund 4a steht axial über die Stirnseite des Rotors vor. Die Herstellung des Bundes 4a ist aufwendig und teuer, da er durch Drehoperationen hergestellt werden muß. Zur Ausrichtung des Antriebsrades 30 gegenüber dem Stator 1 sind Zentrier- bzw. Positionierelemente 34 vorgesehen, die in Bohrungen im Antriebsrad und im Stator 1 eingreifen. Die Herstellung dieser Zentrierbohrungen ist ebenfalls aufwendig und teuer.A known adjusting device (FIG. 2) has a stator 1, which surrounds a rotor 4. The rotor 4 is rotatably connected to the camshaft 5. In addition, sitting on the rotor 4 designed as a sprocket drive wheel 30. The rotor 4 has a collar 4a for receiving the drive wheel 30. This collar 4a projects axially beyond the end face of the rotor. The preparation of the federal 4a is complicated and expensive, since it must be made by turning operations. For alignment of the drive wheel 30 relative to the stator 1 centering or positioning elements 34 are provided, which engage in bores in the drive wheel and in the stator 1. The preparation of these centering holes is also complicated and expensive.

Bei einer anderen bekannten Verstelleinrichtung (EP-A-0 896 129) ist die Nockenwelle im Bereich des Rotors mit einem verdickten Abschnitt versehen, auf dem das Antriebsrad sitzt. Der verdickte Abschnitt ist mit Abstand vom Rotor durch eine radiale Schulter begrenzt, an der das Antriebsrad anliegt. Der verdickte Nockenwellenabschnitt hat einen Durchmesser, der sich nur geringfügig vom Durchschnittsdurchmesser der Nockenwelle unterscheidet. Um eine Ausrichtung des Antriebsrades in Drehrichtung gegenüber dem Stator zu erreichen, muß das Antriebsrad bei der Montage gegenüber dem Stator so weit gedreht werden, daß Gewindebohrungen im Antriebsrad mit Durchgangsbohrungen im Stator fluchten, damit die Befestigungsschrauben eingeschraubt werden können. Auch diese Ausrichtung des Antriebsrades gegenüber dem Stator ist aufwendig und schwierig.In another known adjusting device (EP-A-0 896 129), the camshaft is provided in the region of the rotor with a thickened portion on which the drive wheel is seated. The thickened portion is spaced from the rotor by a radial shoulder on which the drive wheel rests. The thickened camshaft portion has a diameter that differs only slightly from the average diameter of the camshaft. To align the drive wheel in the direction of rotation relative to the To achieve stator, the drive wheel must be rotated so far during assembly relative to the stator that tapped holes in the drive wheel with through holes in the stator are aligned so that the mounting screws can be screwed. This orientation of the drive wheel relative to the stator is complicated and difficult.

Es ist eine weitere Verstelleinrichtung bekannt (US-A-5 495 776), bei der das Antriebsrad auf einem im Durchmesser verringerten Abschnitt der Nokkenwelle sitzt, der ebenfalls von einer radialen Schulter begrenzt ist. Das Antriebsrad ist an der Außenseite des Bodens eines napfförmigen Exzenters befestigt, mit dem eine Benzinpumpe angetrieben wird.There is another adjusting device known (US-A-5 495 776) in which the drive wheel is seated on a reduced diameter portion of the camshaft, which is also bounded by a radial shoulder. The drive wheel is fixed to the outside of the bottom of a cup-shaped eccentric, with which a gasoline pump is driven.

Der Erfindung liegt die Aufgabe zugrunde, die gattungsgemäße Einrichtung so auszubilden, daß sie einfach und kostengünstig hergestellt und montiert werden kann.The invention has the object of providing the generic device in such a way that it can be easily and inexpensively manufactured and assembled.

Diese Aufgabe wird bei der gattungsgemäßen Einrichtung erfindungsgemäß mit den kennzeichnenden Merkmalen des Anspruches 1 und mit einem Zentrierwerkzeug gemäß Anspruch 12 gelöst.This object is achieved in the generic device according to the invention with the characterizing features of claim 1 and with a centering tool according to claim 12.

Bei der erfindungsgemäßen Einrichtung nach Anspruch 1 wird das Antriebsrad in Drehrichtung gegenüber dem Stator durch das Zentrierelement und das mit ihm zusammenwirkende Gegenelement ausgerichtet. Das Zentrierelement ist am Statormantel vorgesehen, so daß der stator nicht mit Zentrierbohrungen versehen werden muß. Gleiches gilt auch für das Antriebsrad, das infolge des Gegenelementes keine Zentrierbohrung mehr benötigt. Dadurch kann der Stator in einfacher Weise als Sinterteil hergestellt werden.In the device according to the invention according to claim 1, the drive wheel is aligned in the direction of rotation relative to the stator by the centering element and cooperating with him counter-element. The centering element is provided on the stator casing, so that the stator does not have to be provided with centering holes. The same applies to the drive wheel, which requires no center hole as a result of the counter element. As a result, the stator can be easily manufactured as a sintered part.

Bei eine bevorzugten Ausbildung wird das Antriebsrad durch den Bund der Nockenwelle zentriert. Dadurch kann der Rotor sehr einfach ausgebildet werden, zumal am Rotor ein Bund nicht erforderlich ist. Der Rotor kann darum im wesentlichen zwei ebene Stirnseiten aufweisen, die nach dem üblichen Sintern des Rotors in einem einfachen Schleifprozeß fertig bearbeitet werden Können.In a preferred embodiment, the drive wheel is centered by the collar of the camshaft. As a result, the rotor can be made very simple, especially since a collar is not required on the rotor. Therefore, the rotor can essentially have two flat end faces, which can be finished after the usual sintering of the rotor in a simple grinding process.

Weitere Merkmale der Erfindung ergeben sich aus den weiteren Ansprüchen, der Beschreibung und den Zeichnungen.Further features of the invention will become apparent from the other claims, the description and the drawings.

Die Erfindung wird anhand einiger in den Zeichnungen dargestellter Ausführungsformen näher erläutert. Es zeigen

Fig. 1
im Axialschnitt eine erfindungsgemäße Verstelleinrichtung,
Fig. 2
in einer Darstellung entsprechend Fig. 1 eine Verstelleinrichtung nach dem Stand der Technik,
Fig. 3
in einer Darstellung entsprechend Fig. 1 eine zweite Ausführungsform einer erfindungsgemäßen Verstelleinrichtung,
Fig. 4
in vergrößerter Darstellung und in Achsansicht einen Teil der erfindungsgemäßen Verstelleinrichtung während der Montage,
Fig. 5
in einer Darstellung entsprechend Fig. 4 die fertig montierte Verstelleinrichtung,
Fig. 6
einen Schnitt längs der Linie A-A in Fig. 5,
Fig. 7
im Axialschnitt einen Teil eines Montagewerkzeuges und der erfindungsgemäßen Verstelleinrichtung gemäß Fig. 4,
Fig. 8
im Axialschnitt eine erfindungsgemäße Verstelleinrichtung bei der Montage,
Fig. 9
im Axialschnitt eine weitere Ausführungsform bei der Montage der erfindungsgemäßen Verstelleinrichtung.
The invention will be explained in more detail with reference to some embodiments shown in the drawings. Show it
Fig. 1
in axial section an adjusting device according to the invention,
Fig. 2
1 shows an adjusting device according to the prior art,
Fig. 3
in a representation corresponding to FIG. 1, a second embodiment of an adjusting device according to the invention,
Fig. 4
in an enlarged view and in an axial view of a part of the adjusting device according to the invention during assembly,
Fig. 5
in a representation corresponding to FIG. 4, the fully assembled adjusting device,
Fig. 6
a section along the line AA in Fig. 5,
Fig. 7
in axial section a part of an assembly tool and the adjusting device according to the invention shown in FIG. 4,
Fig. 8
in axial section an adjusting device according to the invention during assembly,
Fig. 9
in axial section, a further embodiment in the assembly of the adjusting device according to the invention.

Die Verstelleinrichtung ist ein Nockenwellenversteller, mit dem in bekannter Weise eine Nockenwelle in einer Brennkraftmaschine eines Kraftfahrzeuges verstellt werden kann. Da die Ausbildung einer solchen Verstelleinrichtung bekannt ist, wird sie im folgenden nur kurz erläutert. Sie hat einen Stator 1, der einen zylindrischen Mantel 2 aufweist, von dem radial nach innen (nicht dargestellte) Stege ragen, zwischen denen Druckkammern gebildet werden. Die Stege liegen mit ihren Stirnseiten dichtend an einem Grundkörper 3 eines Rotors 4 an, der drehfest mit einer Nockenwelle 5 verbunden ist. Vom Rotorgrundkörper 3 stehen radial Flügel 6 ab, die mit ihren Stirnseiten dichtend an der Innenwand 7 des Statormantels 2 anliegen. In jeder Druckkammer des Stators 1 liegt ein Flügel, dessen Breite kleiner ist als der Abstand zwischen den die jeweilige Druckkammer begrenzenden Seitenwänden der Statorstege. Der Rotor 4 kann gegenüber dem Stator 1 relativ so weit gedreht werden, bis die Rotorflügel 6 je nach Drehrichtung an einer der beiden Begrenzungswände der Druckkammern des Stators 1 anliegen. Die Rotorflügel 6 werden durch ein Druckmedium von beiden Seiten beaufschlagt, je nach gewünschter Drehrichtung des Rotors 4 gegenüber dem Stator 1. Hierzu wird das Druckmedium, gesteuert über wenigstens ein (nicht dargestelltes) Ventil, über Bohrungen 8 oder 9 in der Nockenwelle 5 zugeführt. Über die radialen Bohrungen 8, 9 gelangt das Druckmedium in axial verlaufende Zuleitungen 10, 11 in der Nockenwelle 5. Über diese Zuleitungen 10, 11 wird das Druckmedium über radial verlaufende Bohrungen 12, 13 an die entsprechende Seite der Rotorflügel 6 gefördert.The adjusting device is a camshaft adjuster with which a camshaft in an internal combustion engine of a motor vehicle can be adjusted in a known manner. Since the formation of such an adjustment is known, it will be explained only briefly. It has a stator 1, which has a cylindrical shell 2, projecting from the radially inwardly (not shown) webs, between which pressure chambers are formed. The webs lie with their end faces sealingly against a base body 3 of a rotor 4, which is rotatably connected to a camshaft 5. From the rotor main body 3 are radially from wings 6, which abut with their end faces sealingly against the inner wall 7 of the stator shell 2. In each pressure chamber of the stator 1 is a wing whose width is smaller than the distance between the respective pressure chamber limiting side walls of the stator webs. The rotor 4 can opposite the stator 1 are relatively far rotated until the rotor blades 6 abut depending on the direction of rotation of one of the two boundary walls of the pressure chambers of the stator 1. The rotor blades 6 are acted upon by a pressure medium from both sides, depending on the desired direction of rotation of the rotor 4 relative to the stator 1. For this purpose, the pressure medium, controlled by at least one (not shown) valve, via holes 8 or 9 in the camshaft 5 is supplied. About the radial bores 8, 9, the pressure medium enters axially extending supply lines 10, 11 in the camshaft 5. About these leads 10, 11, the pressure medium via radially extending bores 12, 13 is conveyed to the corresponding side of the rotor blades 6.

An einer Stirnseite des Statormantels 2 liegt eine Deckscheibe 14 an, die mit über den Umfang verteilt angeordneten Schrauben oder Gewindebolzen 15 am Stator 1 befestigt ist. Der Außendurchmesser der Deckscheibe 14 entspricht dem Außendurchmesser des Statormantels 2. Die Deckscheibe 14 übergreift radial den Rotorgrundkörper 3 und weist eine zentrale Öffnung 16 auf, in der ein Schraubenkopf 17 einer Schraube 18 liegt, mit der die Nockenwelle 5 drehfest mit dem Rotor 4 verbunden wird.At a front side of the stator 2 is a cover plate 14 which is mounted with distributed over the circumference arranged screws or threaded bolt 15 on the stator 1. The outer diameter of the cover plate 14 corresponds to the outer diameter of the stator shell 2. The cover plate 14 radially engages over the rotor base body 3 and has a central opening 16 in which a screw head 17 of a screw 18 is located, with which the camshaft 5 is rotatably connected to the rotor 4 ,

Die Nockenwelle 5 hat mit Abstand von ihrem freien Ende einen radial nach außen ragenden Bund 19, auf dem ein Flansch 20 sitzt. Er wird durch die über den Umfang verteilt angeordneten Schrauben 15 mit dem Stator 1 verbunden.The camshaft 5 has at a distance from its free end a radially outwardly projecting collar 19, on which a flange 20 is seated. It is connected to the stator 1 by the screws 15 distributed over the circumference.

Der Rotor 4 bzw. sein Grundkörper 3 hat zwei ebene Stirnseiten 21 und 22. Der Rotor 4 ist vorteilhaft ein Sinterteil. Nach dem Sintern des Rotors 4 können die beiden ebenen Stirnseiten 21, 22 durch einen einfachen Schleifprozeß fertig bearbeitet werden. Mit der Stirnseite 22 liegt der Rotor 4 an der Deckscheibe 14 an. Die gegenüberliegende Stirnseite 21 ist mit einer zentralen Vertiefung 23 versehen, die zur Zentrierung des Rotors 4 auf der Nockenwelle 5 dient. Eine Hülse 24 dient zur Trennung der Zuleitungen 10 und 11. Die Nokkenwelle 5 ist vorteilhaft einstückig ausgebildet und trägt den Bund 19. Mit dem über den Bund 19 ragenden Ende liegt die Nockenwelle 5 mit ihrer äußeren Mantelfläche 25 an der Innenwand 26 der Vertiefung 23 des Rotors an. Dadurch ist die Nockenwelle 5 in einfacher Weise radial gegenüber dem Rotor 4 ausgerichtet. Die axiale Ausrichtung erfolgt durch Anlage des Bundes 19 an der ebenen Stirnseite 21 des Rotors 4.The rotor 4 or its base body 3 has two flat end faces 21 and 22. The rotor 4 is advantageously a sintered part. After sintering the rotor 4, the two flat end faces 21, 22 can be finished by a simple grinding process. With the end face 22 of the rotor 4 abuts against the cover plate 14. The opposite end face 21 is provided with a central recess 23, which serves to center the rotor 4 on the camshaft 5. The camshaft 5 is advantageously formed in one piece and carries the collar 19. With the projecting beyond the collar 19 end, the camshaft 5 is located with its outer circumferential surface 25 on the inner wall 26 of the recess 23 of the Rotor on. As a result, the camshaft 5 is aligned radially relative to the rotor 4 in a simple manner. The axial alignment is done by conditioning the collar 19 on the flat end 21 of the rotor. 4

Die Vertiefung 23 im Rotor 4 kann während des Sinterprozesses vorgesehen werden, so daß eine nachträgliche Einarbeitung dieser zentralen Vertiefung 23 in den Rotor 4 nicht erforderlich ist. Das (nicht dargestellte) Kettenrad ist über den Flansch 20 durch die Nockenwelle 5 zentriert. Ebenso kann der Flansch 20 als Kettenrad ausgebildet werden. Der Bund 19 dient zur Lagerung 27 des Flansches 20. Damit können durch den Antrieb hervorgerufene Radialkräfte aufgenommen und die Reibung zwischen dem Rotor 4 und dem Stator 1 minimiert werden.The recess 23 in the rotor 4 may be provided during the sintering process, so that a subsequent incorporation of this central recess 23 in the rotor 4 is not required. The sprocket (not shown) is centered over the flange 20 by the camshaft 5. Likewise, the flange 20 may be formed as a sprocket. The collar 19 is used for mounting 27 of the flange 20. Thus, caused by the drive radial forces can be absorbed and the friction between the rotor 4 and the stator 1 are minimized.

Die Nockenwelle 5 hat einen Innendurchmesser, der größer ist als der Außendurchmesser der Schraube 18. In dem dadurch gebildeten Ringraum 28 ist die Hülse 24 eingesetzt, durch die dieser Ringraum 28 in die beiden Zuleitungen 10 und 11 für das Druckmedium unterteilt wird. Diese Zuleitungen 10, 11 sind somit jeweils Ringräume, die durch die Hülse 24 voneinander getrennt sind.The camshaft 5 has an inner diameter which is larger than the outer diameter of the screw 18. In the annular space 28 formed thereby, the sleeve 24 is inserted, through which this annular space 28 is divided into the two supply lines 10 and 11 for the pressure medium. These leads 10, 11 are thus each annular spaces, which are separated by the sleeve 24 from each other.

Fig. 3 zeigt eine Verstelleinrichtung in Form eines Nockenwellenverstellers, bei dem auf dem Bund 19 der Nockenwelle 5 ein Kettenrad 30 sitzt. Wie bei der vorigen Ausführungsform erfolgt die radiale Zentrierung des Rotors 4 gegenüber der Nockenwelle 5 dadurch, daß die Nockenwelle 5 mit ihrem über den Bund 19 axial überstehenden Ende an der Innenwand 26 der Vertiefung 23 in der Stirnseite 21 des Rotors 4 anliegt. Das Kettenrad 30 ist durch Gewindebolzen 31, die vorteilhaft über den Umfang des Stators 1 verteilt angeordnet sind, stirnseitig an den Stator 1 angeschraubt.Fig. 3 shows an adjusting device in the form of a camshaft adjuster, in which on the collar 19 of the camshaft 5, a sprocket 30 is seated. As in the previous embodiment, the radial centering of the rotor 4 relative to the camshaft 5 is characterized in that the camshaft 5 with its over the collar 19 axially projecting end on the inner wall 26 of the recess 23 in the end face 21 of Rotor 4 is applied. The sprocket 30 is screwed by threaded bolts 31, which are advantageously distributed over the circumference of the stator 1, frontally screwed to the stator 1.

Unabhängig von der radialen Zentrierung des Rotors 4 gegenüber der Nockenwelle 5 erfolgt die Ausrichtung des Kettenrades 30 in bezug auf den Stator 1. Dies soll anhand der Fig. 4 bis 7 näher erläutert werden. In Fig. 4 ist einer der Stege 32 des Stators 1 zu erkennen, der stirnseitig am Grundkörper 3 des Rotors 4 anliegt. Einen der Rotorflügel 6 zeigt Fig. 4, der mit einer Seitenfläche an einer Seitenwand des Steges 32 anliegt. Zumindest einige der Statorstege 32 werden von jeweils einem Gewindebolzen 31 durchsetzt, mit dem das Kettenrad 30 mit dem Stator 1 drehfest verbunden wird.Regardless of the radial centering of the rotor 4 relative to the camshaft 5, the orientation of the sprocket 30 with respect to the stator 1 takes place. This will be explained in more detail with reference to FIGS. 4 to 7. In Fig. 4, one of the webs 32 of the stator 1 can be seen, which abuts the front side of the main body 3 of the rotor 4. One of the rotor blades 6 is shown in FIG. 4, which rests with a side surface on a side wall of the web 32. At least some of the stator webs 32 are penetrated by a respective threaded bolt 31, with which the sprocket 30 is rotatably connected to the stator 1.

Damit das Kettenrad 30 in Umfangsrichtung gegenüber dem Stator 1 ausgerichtet werden kann, ist am Statormantel 2 mindestens ein Zentrierelement 33 vorgesehen, das im Ausführungsbeispiel eine Vertiefung in der äußeren Mantelfläche ist. Das Kettenrad 30 ist mit einem Positionierelement 34 versehen.Thus, the sprocket 30 can be aligned in the circumferential direction relative to the stator 1, at least one centering element 33 is provided on the stator casing 2, which is a recess in the outer circumferential surface in the embodiment. The sprocket 30 is provided with a positioning member 34.

Zur exakten Ausrichtung des Kettenrades 30 in Umfangsrichtung gegenüber dem Stator 1 wird ein Montagewerkzeug 36 eingesetzt. Es hat eine Grundplatte 37, auf der ein Ausrichtelement 38 vorgesehen ist. Die Grundplatte 37 ist mit einer dreieckförmigen Vertiefung 39 versehen, in die beim Ansetzen des Montagewerkzeuges 36 an den Stator 1 das Positionierelement 34 eingreift. Infolge der dreieckförmigen Ausbildung der Vertiefung 39 wird das Positionierelement 34 und damit das Kettenrad 30 in Drehrichtung gegenüber dem Stator 1 ausgerichtet. Außerdem greift das Ausrichtelement 38 des Montagewerkzeuges 36 in eine Nut 40 ein, die in der Außenseite des Mantels 2 des Stators 1 vorgesehen ist und axial zwischen der Deckscheibe 14 und dem Kettenrad 30 verläuft (Fig. 7). Die Gewindebolzen 31 lassen sich einfach montieren und die Deckscheibe 14, der Stator 1 und das Kettenrad 30 fest miteinander verbinden.For exact alignment of the sprocket 30 in the circumferential direction relative to the stator 1, a mounting tool 36 is used. It has a base plate 37 on which an alignment element 38 is provided. The base plate 37 is provided with a triangular-shaped depression 39 into which the positioning element 34 engages when attaching the assembly tool 36 to the stator 1. Due to the triangular formation of the recess 39, the positioning element 34 and thus the sprocket 30 is aligned in the direction of rotation relative to the stator 1. In addition, the alignment member 38 of the mounting tool 36 engages a groove 40 which is provided in the outside of the shell 2 of the stator 1 and axially between the cover plate 14 and the sprocket 30 extends (Fig. 7). Leave the threaded bolts 31 simply assemble and connect the cover plate 14, the stator 1 and the sprocket 30 firmly together.

Da in der beschriebenen Weise über das Formschlußelement 34 und das nutförmige Zentrierelement 33 die Ausrichtung von Stator 1 und Kettenrad 30 in Umfangsrichtung erfolgt, kann der Stator 1 in einfacher und kostengünstiger Weise als Sinterteil hergestellt werden. Nach dem Sintern ist nur noch die Anlageseite des Stators 1 für das Kettenrad 30 zu bearbeiten, vorzugsweise zu schleifen.Since in the manner described by the form-locking element 34 and the groove-shaped centering element 33, the alignment of the stator 1 and sprocket 30 in the circumferential direction, the stator 1 can be produced in a simple and cost-effective manner as a sintered part. After sintering, only the contact side of the stator 1 is to be processed for the sprocket 30, preferably to grind.

Das Ausrichtelement 38 ist vorteilhaft federbelastet, so daß die Zentrierung in Umfangsrichtung zwischen dem Stator 1 und dem Kettenrad 30 unabhängig von der radialen Ausrichtung des Kettenrades 30 gegenüber dem Rotor 4 erfolgen kann.The alignment member 38 is advantageously spring loaded, so that the centering in the circumferential direction between the stator 1 and the sprocket 30 can be independent of the radial orientation of the sprocket 30 relative to the rotor 4.

Fig. 8 zeigt die Möglichkeit, das Kettenrad 30 radial gegenüber dem Rotor 4 auszurichten. In diesem Falle wird als Montagewerkzeug 36 ein Zentrierdorn verwendet, der eine im Querschnitt gestufte Ausbildung aufweist. Die Abstufung ist so vorgesehen, daß das Kettenrad 30 auf dem Zentrierdorn 36 aufliegt, der seinerseits mit seinem verjüngten Ende 41 an der Innenwand 26 der stirnseitigen Vertiefung 23 des Rotors 4 anliegt. In Höhe der Anlage des Kettenrades 30 und der Innenwand 26 sind im Zentrierdorn 36 Dehmkammern 42 und 43 vorgesehen, in die über eine Zuleitung 44 ein Druckmedium zugeführt wird. Im Bereich der Dehnkammern 42, 43 hat der Zentrierdorn 36 eine so dünne Wandung, daß diese unter dem Druck des Mediums elastisch aufweitet. Dadurch wird jegliches Spiel zwischen dem Zentrierdorn 36 und dem Kettenrad 30 bzw. dem Rotor 4 ausgeglichen. Auf diese Weise läßt sich das Kettenrad 30 einfach und hochgenau radial gegenüber dem Rotor 4 ausrichten.FIG. 8 shows the possibility of aligning the sprocket 30 radially with respect to the rotor 4. In this case, a centering mandrel is used as an assembly tool 36, which has a stepped cross-sectional configuration. The gradation is provided so that the sprocket 30 rests on the centering mandrel 36, which in turn rests with its tapered end 41 on the inner wall 26 of the front-side recess 23 of the rotor 4. In the amount of the system of the sprocket 30 and the inner wall 26 36 Dehmkammern 42 and 43 are provided in the centering, in which via a feed line 44, a pressure medium is supplied. In the area of the expansion chambers 42, 43, the centering pin 36 has such a thin wall that it expands elastically under the pressure of the medium. Thereby, any play between the centering mandrel 36 and the sprocket 30 and the rotor 4 is compensated. In this way, the sprocket 30 can be aligned easily and with high accuracy radially relative to the rotor 4.

Fig. 9 zeigt als Montagewerkzeug wiederum den Zentrierdorn 36, der jedoch keine Dehnkammern 42, 43 aufweist. Statt dessen ist er in Höhe des Kettenrades 30 sowie der Innenwand 26 der stirnseitigen Vertiefung 23 des Rotors 4 jeweils mit einem ringförmigen Spielausgleichselement 45, 46 versehen. Diese Spielausgleichselemente 45, 46 können O-Ringe, schlauchförmige Ringe mit Druckbeaufschlagung und dergleichen sein, die in entsprechenden Umfangsnuten des Zentrierdorns 36 untergebracht sind. Ein eventuell vorhandenes Spiel zwischen dem Zentrierdorn 36 und dem Kettenrad 30 sowie dem Rotor 4 wird durch elastische Verformung dieser Spielausgleichselemente 45, 46 erreicht.FIG. 9 again shows the centering mandrel 36 as an assembly tool, but without expansion chambers 42, 43. Instead he is in Height of the sprocket 30 and the inner wall 26 of the front-side recess 23 of the rotor 4 are each provided with an annular clearance compensation element 45, 46. This clearance compensation elements 45, 46 may be O-rings, tubular rings with pressurization and the like, which are housed in corresponding circumferential grooves of the centering mandrel 36. Any existing clearance between the centering pin 36 and the sprocket 30 and the rotor 4 is achieved by elastic deformation of these clearance compensation elements 45, 46.

Bei den beschriebenen Ausführungsformen wird die Nockenwelle 5 in die Vertiefung 23 des Rotors 4 eingesetzt und mit diesem Ende drehfest mit dem Rotor verbunden. Hierfür kann jede geeignete Verbindung zwischen der Nockenwelle und dem Rotor vorgesehen sein. Damit die Verstelleinrichtung auch für bereits vorhandene Nockenwellen verwendet werden kann, die nicht in den Rotor ragen, ist es möglich, Adapter zu verwenden, die in diesem Falle die Nockenwelle mit dem Rotor 4 drehfest verbinden. In einem solchen Fall kann über das Adapterstück das Druckmittel zum Verdrehen des Rotors 4 gegenüber dem Stator 1 zugeführt werden. Dies hat den Vorteil, daß die Nockenwelle selbst keine besondere Bearbeitung bzw. Ausbildung benötigt.In the described embodiments, the camshaft 5 is inserted into the recess 23 of the rotor 4 and rotatably connected to this end with the rotor. For this purpose, any suitable connection between the camshaft and the rotor may be provided. So that the adjusting device can also be used for existing camshafts that do not protrude into the rotor, it is possible to use adapters which in this case connect the camshaft to the rotor 4 in a torque-proof manner. In such a case, the pressure medium for rotating the rotor 4 relative to the stator 1 can be supplied via the adapter piece. This has the advantage that the camshaft itself requires no special processing or training.

Anstelle des Kettenrades 30 können bei den beschriebenen Nockenwellenverstellern auch Zahnräder oder Riemenscheiben vorgesehen werden.Instead of the sprocket 30 and gears or pulleys can be provided in the described camshaft adjusters.

Claims (12)

  1. Device for adjusting a camshaft (5) of an internal combustion engine of a motor vehicle, with a stator (1) with a stator shell (2) and a rotor (4) which is connected in a rotatable manner relative to the stator (1) and in a rotationally rigid manner to the camshaft (5), and with at least one drive wheel (30) which is connected in a rotationally rigid manner to the stator (1) and is centred by the camshaft (5),
    characterised in that
    at least one centring element (33) is provided at the stator shell (2), which element co-operates with a mating element (34) of the drive wheel (30) and by means of which the drive wheel (30) is aligned in the circumferential direction with respect to the stator (1)
  2. Device according to Claim 1,
    characterised in that the camshaft (5) comprises a collar (19) on which the drive wheel (30) is seated.
  3. Device according to Claim 1 or 2,
    characterised in that the camshaft (5) projects into a depression (23) in a front side (21) of the rotor (4).
  4. Device according to claim 3,
    characterised in that the collar (19) of the camshaft (5) lies axially against the front side (21) of the rotor (4).
  5. Device according to Claim 3 or 4,
    characterised in that the camshaft (5) lies against the inner wall (26) of the depression (23) of the rotor (4).
  6. Device according to any one of claims 1 to 5,
    characterised in that the two front sides (21, 22) of the rotor (4) are plane.
  7. Device according to any one of Claims 1 to 6,
    characterised in that the centring element (33) aligns the drive wheel (30) in the direction of rotation with respect to the stator (1).
  8. Device according to Claim 7,
    characterised in that the centring element (33) is a depression in the shell (2) of the stator (1).
  9. Device according to Claim 7 or 8,
    characterised in that the mating element (34) is a boss on the drive wheel (30) which engages in the centring element (33) .
  10. Device according to any one of Claims 1 to 9,
    characterised in that the stator (1) comprises at least one aligning part (40) which co-operates with at least one aligning element (38) of an assembly tool (36) for radially aligning the drive wheel (30) with respect to the rotor (4).
  11. Device according to Claim 10,
    characterised in that the aligning part (40) is an axially extending groove in the shell (2) of the stator (1).
  12. Centring tool (36), by means of which the drive wheel (30) is aligned in the circumferential direction with respect to the stator (1), by means of which, when applied to a device according to Claims 1 to 11, an engagement in a centring element (33) of the stator and a mating element (34) of the drive wheel takes place, in order to carry out the alignment.
EP04001789A 2003-02-01 2004-01-28 Camshaft phasing device for an internal combustion engine of a vehicle and corresponding centre tool Expired - Lifetime EP1443185B9 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10303991 2003-02-01
DE10303991A DE10303991A1 (en) 2003-02-01 2003-02-01 Device for adjusting a camshaft of an internal combustion engine of a motor vehicle

Publications (3)

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EP1443185A1 EP1443185A1 (en) 2004-08-04
EP1443185B1 true EP1443185B1 (en) 2007-03-14
EP1443185B9 EP1443185B9 (en) 2007-10-03

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US (1) US7117832B2 (en)
EP (1) EP1443185B9 (en)
AT (1) ATE356923T1 (en)
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Publication number Publication date
US20050011481A1 (en) 2005-01-20
EP1443185A1 (en) 2004-08-04
EP1443185B9 (en) 2007-10-03
ATE356923T1 (en) 2007-04-15
DE10303991A1 (en) 2004-08-05
DE502004003189D1 (en) 2007-04-26
US7117832B2 (en) 2006-10-10

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