WO2014194894A1 - Déphaseur d'arbre à cames - Google Patents

Déphaseur d'arbre à cames Download PDF

Info

Publication number
WO2014194894A1
WO2014194894A1 PCT/DE2014/200135 DE2014200135W WO2014194894A1 WO 2014194894 A1 WO2014194894 A1 WO 2014194894A1 DE 2014200135 W DE2014200135 W DE 2014200135W WO 2014194894 A1 WO2014194894 A1 WO 2014194894A1
Authority
WO
WIPO (PCT)
Prior art keywords
cover element
camshaft adjuster
locking link
anchoring structure
locking
Prior art date
Application number
PCT/DE2014/200135
Other languages
German (de)
English (en)
Inventor
Jürgen Weber
Original Assignee
Schaeffler Technologies Gmbh & Co. Kg
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 Schaeffler Technologies Gmbh & Co. Kg filed Critical Schaeffler Technologies Gmbh & Co. Kg
Publication of WO2014194894A1 publication Critical patent/WO2014194894A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—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
    • F01L1/34—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
    • F01L2001/34453—Locking means between driving and driven members
    • F01L2001/34469—Lock movement parallel to camshaft axis

Definitions

  • the invention relates to a camshaft adjuster.
  • Camshaft adjusters are used in internal combustion engines for varying the timing of the combustion chamber valves in order to make the phase relation between a crankshaft and a camshaft in a defined angular range, between a maximum early and a maximum late position, variable. Adjusting the timing to the current load and speed reduces fuel consumption and emissions.
  • camshaft adjuster are integrated into a drive train, via which a torque is transmitted from the crankshaft to the camshaft.
  • This drive train can be formed, for example, as a belt, chain or gear drive.
  • the output element and the drive element form one or more pairs of mutually acting pressure chambers, which can be acted upon by hydraulic fluid.
  • the drive element and the output element are arranged coaxially. By filling and emptying individual pressure chambers, a relative movement between the drive element and the output element is generated.
  • the rotationally acting between the drive element and the output element spring urges the drive element relative to the output element in an advantageous direction. This advantage direction can be the same or opposite to the direction of rotation.
  • One type of hydraulic camshaft adjuster is the vane cell dispenser.
  • the vane cell adjuster comprises a stator, a rotor and a drive wheel with an external toothing.
  • the rotor is designed as a driven element usually rotatably connected to the camshaft.
  • the drive element includes the stator and the drive wheel.
  • the stator and the drive wheel are connected to one another in a rotationally fixed manner or alternatively are formed integrally with one another.
  • the rotor is coaxial with the stator and located inside the stator.
  • the rotor and the stator are characterized by their, radially extending wings, oppositely acting oil chambers, which are acted upon by oil pressure and allow relative rotation between the stator and the rotor.
  • the vanes are either formed integrally with the rotor or the stator or arranged as "inserted vanes" in grooves of the rotor or the stator provided for this purpose
  • the vane cell adjusters have various sealing lids The stator and the sealing lids are secured together by a plurality of screw connections ,
  • a displacement element is axially displaced via oil pressure, which generates a helical gear teeth relative rotation between a drive element and an output element.
  • camshaft adjuster Another design of a camshaft adjuster is the electromechanical camshaft adjuster, which has a three-shaft transmission (for example, a planetary gear). One of the shafts forms the drive element and a second shaft forms the output element. About the third wave, the system by means of an adjusting device, such as an electric motor or a brake, rotational energy supplied or removed from the system. A spring may additionally be arranged, which supports or returns the relative rotation between the drive element and output element.
  • the object of the invention is to provide a particularly reliable interlock between the drive element and the output element of the camshaft adjuster.
  • an anchoring structure formed between locking link and cover element.
  • This anchoring structure advantageously holds the locking link reliably in its position to the cover member over the life of the camshaft adjuster.
  • a positive connection between the locking link and cover element is formed, preferably in addition to an already existing non-positive (press fit) and / or cohesive connection.
  • An axial emigration of the locking link relative to the cover element is minimized or prevented by the anchoring structure, which is effective in particular in the axial direction. Consequently, a collision of the locking link used with axially adjacent components is avoided and the reliability of the lock and the camshaft adjuster is increased.
  • the cover element may have a toothing which can be brought into engagement with a control drive.
  • the toothing can be integrally formed by the drive element.
  • the lid member may be formed as a sealing cover, which seals the formed in the camshaft adjuster and oil-filled chambers from the environment.
  • the cover element is formed as a disc or annular disc and rotatably connected to the drive element via further fastening means, such as screws.
  • the lid member may preferably be made of sheet metal. Alternatively, the lid member may be formed as a sintered part.
  • the integral toothing can be produced in a few operations.
  • the anchoring structure is designed as a microprofile having surface structure.
  • the microstructure having surface structure may be formed by the inner circumferential surface of the opening of the cover member for receiving the locking link and / or from the outer circumferential surface of the Verriegelungskulisse.
  • the anchoring structure on a circumferential macroscopic profile, which is designed as a barb.
  • a plurality of axially consecutive barbs can form a sawtooth-shaped profile, which is formed over the circumference of the outer lateral surface of the locking link.
  • Such a circumferential macroscopic profile may alternatively or additionally be formed by the inner circumferential surface of the opening of the cover element.
  • the anchoring structure may be made by extrusion, forming, sintering, calibration, metal powder injection molding, rolling, grinding and / or milling.
  • the locking link on the outer circumference on an anchoring structure may extend along the entire axial length of the outer circumference, or only a portion thereof, preferably the part which coincides with the opening.
  • the anchoring structure is formed as a knurl.
  • the knurl may be diamond-shaped or checkered.
  • a structure introduced by means of a laser can be arranged on the inner circumferential surface of the opening of the cover element.
  • the locking link has been subjected to a different heat treatment from the rest of the cover element.
  • the locking link can thus be made harder than the drive element.
  • the locking link is fixed axially fixed in the opening of the cover element, wherein the locking link has a groove with which the locking link is rotatable or adjustable about its axis. A tool can engage in this groove and turn the locking link around its own axis.
  • a locking game can be adjusted.
  • the locking link By rotation of the locking link, the inner diameter and thus the receptacle for the locking piston can be adjusted in alignment with this, whereby the locking clearance can be adjusted later.
  • the locking link on a groove or a slot for engagement of an adjusting tool.
  • it can thus be measured after adjustment of the entire camshaft adjuster a locking clearance and possibly adjusted.
  • the locking link is pressed into the opening of the cover element.
  • the locking link may have a collar which can prevent a relative movement between locking link and cover element.
  • the lid member has a stepped opening in which the locking link is inserted or pressed.
  • the collar of the locking link is preferably arranged on the side facing the driven element side of the cover element and is preferably sunk in the stepped opening, so that a rotation between the output element and cover element or drive element is not hindered.
  • the locking link is designed as a ring which can be brought into contact with a locking piston.
  • the ring has on its outer periphery an anchoring structure according to the above enumerated training.
  • the locking link is inserted through the opening of the lid member and protrudes in the axial direction beyond the bottom of the lid member.
  • Fig. 1 is a sectional view of a camshaft adjuster according to the invention.
  • Fig. 2 is a detail view of the locking link of a camshaft adjuster according to the invention. Detailed description of the drawings
  • FIG. 1 shows a sectional view of a camshaft adjuster 1 according to the invention.
  • outer periphery of the drive element 3 is arranged integrally with the drive element 3 toothing 13.
  • the drive element 3 and the drive element 3 coaxially arranged output element 14 form with other components a camshaft adjuster 1 in the form of a rempligelzellen- adjuster, known in the prior art.
  • the drive element 3 and the output element 14 are arranged rotatable to each other.
  • the rotation in the circumferential direction of the camshaft adjuster 1 can be done, for example, by filling pressure chambers with hydraulic fluid, wherein the pressure chambers between the drive element 3 and output element 14 are formed.
  • the drive element 3 is rotatably connected by means of a plurality of screws 15 with the separately formed lid member 2.
  • the cover element 2 is formed annular disk-shaped and thus has two planar end faces and a central passage opening. Furthermore, the cover element 2 has an opening 4 for receiving the locking link 5. The locking link 5 is projecting beyond the end face of the cover element 2.
  • the output element 14 has in one of its wings on a locking piston 10 which is spring-loaded with the locking link 5 in engagement. If hydraulic medium is introduced under pressure between the locking slot 5 and the locking piston 10, then the locking piston 10 is moved in the axial direction 12 until it is completely sunk in the driven element 14 and a rotation between the drive element 3 and the driven element 14 can take place.
  • the locking link 5 is inserted as a cup-shaped insert part in the opening 4 of the cover element 2, preferably pressed.
  • the outer circumference 8 the locking link 5 has an anchoring structure 6.
  • the anchoring structure 6 is described in more detail with FIG. 2.
  • FIG. 2 shows a detailed view of the locking link 5 of a camshaft adjuster 1 according to the invention.
  • the locking link 5 has on its outer circumference 8 an anchoring structure 5, which can come into engagement with the opening 4 of the cover element 2.
  • This formation of the anchoring structure 5 allows joining from the direction of the opposite side of the drive element 3.
  • a hydraulic fluid pressure for unlocking the locking piston 10 presses against the bottom of the locking link 5
  • the defined position of the locking link 5 is maintained to the cover element 2, as the Anchoring structure 6 supports the resulting forces.
  • the anchoring structure 6 is formed as a plurality of wedge-shaped and circumferential webs.
  • the anchoring structure 6 may be formed as a knurl or as a plurality of wedge-shaped, non-circumferential webs.
  • the anchoring structure 6 largely assumes the entire axial length of the locking slot 5.
  • FIG. 2 two mounting situations are shown very simplified.
  • the locking link 5 is not yet joined to the lid member 2.
  • the locking mechanism 5 has already been joined in the opening 4 of the cover element 2.
  • the anchoring structure 6 has a shape of barbs formed by lined circumferential webs.
  • the cup-shaped locking link 5 on the inside of a groove formed from the bottom 9, with which a tool can engage in order to adjust the locking link 5 in the installed state about its own axis. List of reference numbers) Camshaft adjuster

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

L'invention concerne un déphaseur d'arbre à cames (1) comprenant un élément couvercle (2). L'élément couvercle (2) est réalisé en forme de disque et solidaire en rotation d'un élément d'entraînement (3) du déphaseur d'arbre à cames (1). L'élément couvercle (2) possède une coulisse de verrouillage (5), formée séparément de l'élément couvercle (2) et insérée dans un orifice (4) de l'élément couvercle (2), qui est solidarisée avec l'élément couvercle (2). La solidarisation est assurée au moyen d'une structure d'ancrage (6) entre l'élément couvercle (2) et la coulisse de verrouillage (5).
PCT/DE2014/200135 2013-06-05 2014-03-20 Déphaseur d'arbre à cames WO2014194894A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201310210389 DE102013210389A1 (de) 2013-06-05 2013-06-05 Nockenwellenversteller
DE102013210389.1 2013-06-05

Publications (1)

Publication Number Publication Date
WO2014194894A1 true WO2014194894A1 (fr) 2014-12-11

Family

ID=50513003

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2014/200135 WO2014194894A1 (fr) 2013-06-05 2014-03-20 Déphaseur d'arbre à cames

Country Status (2)

Country Link
DE (1) DE102013210389A1 (fr)
WO (1) WO2014194894A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014206859A1 (de) * 2014-04-09 2015-10-15 Schaeffler Technologies AG & Co. KG Nockenwellenversteller mit formschlüssiger Verriegelungskulisse
DE102018127706A1 (de) 2018-11-07 2020-05-07 Schaeffler Technologies AG & Co. KG Nockenwellenversteller mit Stator aus Werkstoffverbund

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003269117A (ja) * 2002-03-19 2003-09-25 Hitachi Unisia Automotive Ltd 内燃機関のバルブタイミング制御装置
JP2006022646A (ja) * 2004-07-06 2006-01-26 Hitachi Ltd 内燃機関のバルブタイミング制御装置
JP2007278306A (ja) * 2007-07-30 2007-10-25 Hitachi Ltd 内燃機関のバルブタイミング制御装置
US20120285407A1 (en) * 2011-05-10 2012-11-15 Hitachi Automotive Systems, Ltd. Variable valve timing control apparatus of internal combustion engine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010018202A1 (de) * 2010-04-26 2011-10-27 Schaeffler Technologies Gmbh & Co. Kg Nockenwellenverstellsystem für eine Brennkraftmaschine
JP5739168B2 (ja) * 2011-01-12 2015-06-24 日立オートモティブシステムズ株式会社 内燃機関のバルブタイミング制御装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003269117A (ja) * 2002-03-19 2003-09-25 Hitachi Unisia Automotive Ltd 内燃機関のバルブタイミング制御装置
JP2006022646A (ja) * 2004-07-06 2006-01-26 Hitachi Ltd 内燃機関のバルブタイミング制御装置
JP2007278306A (ja) * 2007-07-30 2007-10-25 Hitachi Ltd 内燃機関のバルブタイミング制御装置
US20120285407A1 (en) * 2011-05-10 2012-11-15 Hitachi Automotive Systems, Ltd. Variable valve timing control apparatus of internal combustion engine

Also Published As

Publication number Publication date
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