EP2529089B1 - Nockenwellenversteller - Google Patents

Nockenwellenversteller Download PDF

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Publication number
EP2529089B1
EP2529089B1 EP10795377.0A EP10795377A EP2529089B1 EP 2529089 B1 EP2529089 B1 EP 2529089B1 EP 10795377 A EP10795377 A EP 10795377A EP 2529089 B1 EP2529089 B1 EP 2529089B1
Authority
EP
European Patent Office
Prior art keywords
locking
cover
collar
phasing device
camshaft phasing
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.)
Active
Application number
EP10795377.0A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2529089A1 (de
Inventor
Werner Wagner
Josef Janitschek
Mario Arnold
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and 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 AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of EP2529089A1 publication Critical patent/EP2529089A1/de
Application granted granted Critical
Publication of EP2529089B1 publication Critical patent/EP2529089B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • 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
    • 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

Definitions

  • the invention relates to a camshaft adjuster with a locking cover, wherein the locking cover has a substantially disc-shaped base surface, and extending in an axial direction, the base at least partially encircling collar for receiving a spring cover.
  • a camshaft adjuster of the type mentioned is in the DE 10 2006 002 993 A1 and in the DE 102 008 001 078 A1 disclosed.
  • the camshaft adjuster has a locking cover, which is made in one piece of a disc, an axial extension and a sprocket.
  • the extension of the locking cover is formed as a disk circulating collar.
  • a spring cover made of sheet metal is used in the interior formed by the collar.
  • the spring cover is bent radially outboard and is deformed after insertion into the extension radially inwardly. The spring cover is thus under radial contact pressure of the inner bore of the extension.
  • a camshaft adjuster basically serves to selectively adjust the phase position between a camshaft and a crankshaft in an internal combustion engine.
  • a camshaft adjuster has a stator rotatably connected to the crankshaft and a rotor held in this stator.
  • the rotor is rotatably connected to the camshaft and can be adjusted relative to the stator.
  • About such an adjustment can in a predetermined angular range rotation of the camshaft relative to the stator can be achieved. As a result, for example, specifically increases the power of an internal combustion engine or their consumption can be reduced.
  • a locking lid On the stator usually a locking lid is connected.
  • the locking lid seals the hydraulic chambers of the camshaft adjuster and can also be designed to hold a return spring.
  • the object of the invention is achieved by a camshaft adjuster with the feature combination according to claim 1.
  • a locking cover which has a substantially disk-shaped base surface, and an extending in an axial direction, the base at least partially encircling collar for receiving a spring cover.
  • the locking cover is in the present case made of sheet metal.
  • a locking cover as part of a camshaft adjuster must withstand high forces during operation.
  • the locking lid must withstand high oil pressures and, where appropriate, give sufficient rest to a return spring. So far, a locking lid is made by a person skilled in the art as a solid component. However, the massive production brings high material costs as well as a high weight with it.
  • the invention surprisingly recognizes that, when providing an axially raised collar, the locking cover can be made of sheet metal without this being associated with a loss of the functionality of the camshaft adjuster.
  • the covenant of the locking lid which at least partially circumscribes its base area, namely ensures the necessary dimensional stability.
  • the stability of the locking lid can be ensured even when installed and loaded condition.
  • the base at least partially circumferential collar a sufficiently high component stiffness can be achieved.
  • the collar increases the bending stiffness on the outer diameter of the locking lid, so that it can withstand high forces.
  • the waistband can easily be attached to a Spring lid can be used.
  • the inner and / or outer lateral surface of the collar may be provided with a number of fasteners.
  • the collar can be used to attach, for example, other components.
  • the production of the locking cover is made of a metal sheet with particularly low material costs and due to the low weight of the sheet, the locking lid can be designed particularly easily.
  • a sheet metal is understood to mean a flat product made of metal which, for example, can result from a rolling process.
  • the locking cover can be made of a sheet with material thicknesses smaller than 3 mm. The use of sheet metal thus allows the production of a weight-optimized locking lid.
  • the base of the locking lid is designed substantially disc-shaped. It may have a recess which serves in particular to receive a camshaft. Furthermore, a locking slot for locking the rotor to the stator can be introduced into the base area. Optionally, this is further introduced an oil passage, which serves to supply the locking link with a hydraulic fluid, in particular oil. Furthermore, bores are preferably formed in the base surface which can serve for fastening the locking cover to a stator.
  • the base surface of the locking cover for holding or fixing a return spring for example, be formed at a Federfußdazzling.
  • the return spring serves to rotate the rotor relative to the stator, so that the rotor, for example, when switching off the internal combustion engine, and thus with a drop in the oil pressure, can be brought to its initial or base position. In this way, the rotor and the stator are brought into the locking position
  • the locking lid is made as a sheet metal forming part.
  • Forming processes such as thermoforming processes are particularly suitable good for the production of metallic components, since these methods are well known and easy to perform. The production cost and the costs can be kept low accordingly.
  • a number of latching lugs oriented in the circumferential direction is preferably arranged on the collar.
  • the locking lugs are particularly impressed on the collar and can be used for easy attachment of another component.
  • two movable components in the intended position can be set axially to each other.
  • the connection can come about a positive connection between the locking lugs and the respective fasteners on the second component, such as a spring cover, come about.
  • the locking lugs accordingly represent an axial trigger safety device for the spring cover over the circumference of the locking lid.
  • the or each latching lug is arranged on the inner circumferential surface of the collar. It can thus be arranged a further component such as a spring cover within the collar of the locking cover, including the spring cover has on its outer circumferential surface a number of corresponding positive locking elements.
  • These interlocking elements may be formed, for example, as webs in the circumferential direction, which are engaged behind in the mounted state of the locking lugs.
  • the spring cover can then be easily inserted axially into the collar of the locking cover and held there by the latch. As a result, the assembly is simplified.
  • centrifugal force can be exploited by the inner receptacle of the spring cover in the locking lid.
  • the collar of the spring cover is pressed by the rotational movement against the collar of the locking cover radially outward, so that the connection between the positive locking elements can not be solved in operation.
  • the or each locking lug is wedge-shaped in the circumferential direction.
  • the interconnected or paired parts can be additionally secured in right- or left-handed camshaft adjusters.
  • arranged on the collar of the locking lid locking lugs allow a simple and compact fixation of another cover or general component on the locking lid.
  • the locking connection offers the possibility of easy disassembly of a spring cover.
  • each radially depressed pockets is arranged on the collar.
  • the pockets serve to prevent rotation of another component, in particular a spring cover.
  • the pockets for example, snap a positive connection element in the form of a nose and thus prevent the two interconnected components rotate against each other.
  • the or each pocket is advantageously arranged on the inner circumferential surface of the collar.
  • an inserted spring cover can be securely held by snapping noses arranged on the spring cover in the pockets of the locking cover within the collar.
  • a locking link and an oil passage are introduced into the base of the locking cover.
  • the locking link serves for the non-rotatable locking of a rotor. It is introduced in particular in the form of a depression in the base of the locking lid.
  • a piston for locking so the form-fitting, mechanical connection of a rotor with a stator intervene.
  • the piston holds the rotor firmly in a designated position.
  • the piston can be lifted out of the recess. This is done by applying the locking linkage with oil, for which purpose the oil passage is used.
  • the oil passage is introduced from the locking link spaced.
  • the ⁇ lbeetzschlagung the locking link only take place when a connection between the oil passage and the locking linkage is established by a rotor inserted into the stator.
  • the rotor has a "supplementary" oil passage.
  • a number of substantially hollow-cylindrical nut supports are further embossed into the base surface.
  • Nuts can be pressed into the nut pads.
  • About pressed-in nuts can be in a simple way thread into the base of the locking lid. The threads serve to receive fastening elements, in particular screws, so that the locking cover can be connected to a stator.
  • the embossed nut supports further lead to improved perpendicularity of the threaded axis of the pressed nuts.
  • the camshaft adjuster includes a spring cover with a substantially disc-shaped base, and with an extending in an axial direction, the base at least partially encircling collar, the spring cover is inserted with its collar in the collar of the locking lid.
  • a spring cover may be connected in the installed state with a locking cover and serves in particular to hold a return spring.
  • the restoring spring can be fastened here under prestress on the locking cover, in particular on a retaining element or a spring base on the base surface of the locking cover. Due to the bias of the return spring this has a high restoring force and should therefore be positioned between two components that hold the spring in shape.
  • the spring cover of the camshaft adjuster has on the outer circumferential surface of its collar on a number of cooperating with the collar of the locking cover positive locking elements.
  • the interlocking elements can be configured differently. In this case, it is provided in particular that they are designed to hold the spring cover in the locking cover, so that a firm connection with the locking cover is possible. For example, a latching connection between the spring cover and a locking cover may be provided.
  • the collar of the spring cover surrounds the base of the spring cover, which has a recess for receiving a camshaft, at least partially. This gives the spring cover stability because the federal government increases the component stiffness of the spring cover and can compensate or prevent unwanted deformations in external force effects.
  • the spring cover is made as a sheet metal forming part.
  • the use of sheet metal brings only low material costs and offers the possibility to produce the spring cover with a low weight.
  • forming processes are easy to perform. It therefore only requires a low production cost, so that the manufacturing cost can be kept low.
  • a circumferentially arranged radially outwardly directed web is provided as a form-fitting element of the spring cover.
  • the web is designed as a counterpart to a latching nose and thus serves to form a latching connection in particular to a locking cover, whereby a secure connection between the two components can be ensured.
  • the locking connection is an overall axial trigger safety for the spring cover.
  • a circumferentially formed nose is provided as a positive locking element of the spring cover.
  • the noses are designed so that they engage in pockets can, in particular, located on the inner circumferential surface of a locking lid.
  • the lugs can snap into the pockets and are thus secured against rotation of the spring cover and the locking lid against each other.
  • the spring cover In the assembled state, the spring cover is inserted axially into the collar of the locking cover and is held there.
  • the hold comes about in particular via a locking and snapping the arranged on the lateral surfaces of the coils positive locking elements.
  • the webs of the spring cover are advantageously engaged behind by the locking lugs of the locking cover and the lugs of the spring cover are snapped into the pockets of the locking lid.
  • the number of interlocking elements which are designed as webs or pockets, variable. They correspond in particular to the number of locking lugs and pockets on the collar of a locking lid.
  • Fig. 1 shows a locking cover 1 on a camshaft adjuster 2 with a disc-shaped base 3.
  • the camshaft adjuster 2 is schematically indicated in the form of a stator 4 on the locking cover 1 only.
  • the locking lid 1 can be seen in a three-dimensional representation.
  • the locking lid 1 is manufactured as a forming part.
  • the locking cover 1 consists of a thin sheet with a thickness of about 2.5 mm.
  • the disc-shaped base 3 has an extending in an axial direction 5 collar 7.
  • the collar 7 serves to receive a in Fig. 1 not shown spring cover.
  • a spring cover is in a detailed version of the Fig. 2 refer to.
  • the base 3 has a central recess 9. Within this recess 9, a camshaft can be accommodated in the installed state.
  • a locking link 11 and a spaced therefrom oil passage 13 are introduced.
  • the locking link 11 is used in the installed state within a camshaft adjuster of the rotationally fixed Locking a rotor with a stator.
  • the oil passage 13 is used to supply the locking link 11 oil. This supply of the locking link 11 via the oil passage 13 is ensured due to the distance between the two only by a mounted on a rotor "complementary" oil passage.
  • an external leakage can be prevented.
  • nuts are pressed.
  • the perpendicularity of the threaded axes of the pressed nuts can be improved.
  • screws can be added, which are bolted to the nuts.
  • the locking cover 1 is fastened to the stator 2. Both screws and nuts are in the Fig. 1 Not shown.
  • the collar 7 rotates the base 3 of the locking lid 1 in full. It has on its inner circumferential surface 17 a number of aligned in the circumferential direction and wedge-shaped locking lugs 19.
  • the locking lugs 19 are used to connect a spring cover, which can be received within the inner circumferential surface 17 of the locking cover 1.
  • the spring cover can form a latching connection with the locking lugs 19 via arranged on its collar positive locking elements, so that the two components are fixed axially to each other in the desired position.
  • the locking lugs 19 accordingly represent an axial trigger safety device for a spring cover over the circumference of the locking cover 1.
  • the locking lugs 19 are wedge-shaped in the circumferential direction. As a result, the spring cover and the locking cover 1 are additionally secured against removal of the spring cover.
  • each radially recessed pockets 21 is disposed on the inner circumferential surface 17.
  • the pockets 21 are sunk into the collar 7 and thus offer the possibility that further positive locking elements of a spring cover engage in this. Such a connection serves to prevent rotation of a spring cover in the installed state.
  • an inserted into the locking cover 1 spring cover can thus be secured axially and in the circumferential direction.
  • the return cover is hereby usually secured under pretension on the locking cover 1 and is then held in position by a spring cover inserted into the locking cover 1.
  • Fig. 2 is a spring cover 31 for a phaser in a three-dimensional view to see.
  • the spring cover 31 has, as well as the locking lid in Fig. 1 , a substantially disc-shaped base 33 with a central recess 35 for receiving a camshaft. It is also made of sheet metal with a thickness of about 0.5 mm as a sheet metal forming part.
  • the spring cover 31 is formed with an extending in the axial direction 5 collar 37 which rotates the base 33.
  • the spring cover 31 can with its collar 37 in the collar 7 of in Fig. 1 shown locking cover 1 are used.
  • a number of positive-locking elements 41 is arranged on the outer circumferential surface 39 of the collar 37. These form-fitting elements 39 are formed as webs 43 and 45 as lugs.
  • the spring cover 31 can be inserted axially in a simple manner in the collar 7 of the locking cover 1 and held there by the latching between locking lugs 19 and webs 43.
  • the engagement of the lugs 35 in pockets 21 on the inner periphery of a locking cover secures the spring cover 31 against rotation.
  • a number of holes 47 are introduced in the base 33, through which the screw end of the screws can extend in the installed state, which connect the locking cover 1 with a stator 4. Additional holes 49 are used for weight reduction or axial withdrawal.
  • recesses 50 are introduced for the nut supports 15 of the locking cover 1 in the federal government.
  • the recesses 50 are located at the points at which the nut supports 15 would come into contact with the collar 37 of the spring cover 31 during assembly and would prevent insertion of the spring cover. Through the recesses 50, the spring cover 31 can be easily inserted into the locking cover 1.
  • Fig. 3 schematically shows a camshaft adjuster 2 with a locking cover 1 according to Fig. 1 and with a spring cover 31 according to Fig. 2
  • the camshaft adjuster 2 is here indicated only schematically, whereas the locking cover 1 and the spring cover 31 are shown in a three-dimensional representation. Both the locking cover 1 and the spring cover 31 are already described in detail in the two preceding figures, so that reference is made here to the description of these figures.
  • the spring cover 31 is inserted with its collar 37 in the collar 7 of the locking cover 1.
  • the webs of the spring cover 31 are engaged behind by the locking lugs 19 of the locking cover 1, so that a latching connection 53 between the locking lugs 19 and the webs 43 comes about.
  • the lugs 45 of the spring cover 31 are snapped into the pockets 21 of the locking cover 1 to form a positive connection 55.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
EP10795377.0A 2010-01-25 2010-12-20 Nockenwellenversteller Active EP2529089B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010005602A DE102010005602A1 (de) 2010-01-25 2010-01-25 Nockenwellenversteller
PCT/EP2010/070215 WO2011088939A1 (de) 2010-01-25 2010-12-20 Nockenwellenversteller

Publications (2)

Publication Number Publication Date
EP2529089A1 EP2529089A1 (de) 2012-12-05
EP2529089B1 true EP2529089B1 (de) 2014-09-03

Family

ID=43618018

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10795377.0A Active EP2529089B1 (de) 2010-01-25 2010-12-20 Nockenwellenversteller

Country Status (7)

Country Link
US (1) US8931446B2 (zh)
EP (1) EP2529089B1 (zh)
KR (1) KR20120118018A (zh)
CN (1) CN102725485B (zh)
BR (1) BR112012017813A2 (zh)
DE (1) DE102010005602A1 (zh)
WO (1) WO2011088939A1 (zh)

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Publication number Priority date Publication date Assignee Title
DE102011004588A1 (de) * 2011-02-23 2012-08-23 Schaeffler Technologies Gmbh & Co. Kg Nockenwellensteller
DE102012206338B4 (de) 2012-04-18 2021-06-02 Schaeffler Technologies AG & Co. KG Nockenwellenversteller mit Stator-Deckel-Einheit zur automatischen Einstellung eines Verriegelungsspiels
DE102012209137A1 (de) 2012-05-31 2013-12-05 Schaeffler Technologies AG & Co. KG Nockenwellenversteller
DE102013218031B4 (de) 2013-09-10 2020-09-17 Schaeffler Technologies AG & Co. KG Nockenwellenversteller und Federdeckel
DE112016000836T5 (de) * 2015-02-20 2017-12-21 Schaeffler Technologies AG & Co. KG Nockenwellenphasenversteller
US10167747B2 (en) 2016-10-28 2019-01-01 Schaeffler Technologies AG & Co. KG Sheet metal locking cover for a cam phaser
CN107762586B (zh) * 2017-11-22 2024-04-12 宁波太平洋电控系统有限公司 凸轮轴中间锁止vvt用平面弹簧固定装置
US11268412B2 (en) 2019-06-07 2022-03-08 SCHAEFFLER TECHOLOGIES AG & Co. KG Camshaft phaser

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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
DE102004012460B3 (de) * 2004-03-11 2005-10-13 Hydraulik-Ring Gmbh Nockenwellenversteller mit konstruktiv frei wählbarer Verriegelungsposition
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DE102006002993A1 (de) * 2006-01-21 2007-08-09 Schaeffler Kg Nockenwellenversteller für eine Brennkraftmaschine
JP2009074424A (ja) * 2007-09-20 2009-04-09 Denso Corp バルブタイミング調整装置
DE102008001078A1 (de) * 2008-04-09 2009-10-15 Robert Bosch Gmbh Vorrichtung zum Verändern der Nockenwellenphasenlage
DE102008032032B4 (de) * 2008-07-07 2021-01-28 Schaeffler Technologies AG & Co. KG Deckelelement für eine Nockenwellenverstellvorrichtung
JP4985729B2 (ja) * 2008-09-11 2012-07-25 株式会社デンソー バルブタイミング調整装置
DE102009042215B4 (de) * 2008-10-14 2018-06-07 Schaeffler Technologies AG & Co. KG Nockenwellenversteller für eine konzentrische Nockenwelle
JP2011064105A (ja) * 2009-09-16 2011-03-31 Hitachi Automotive Systems Ltd 内燃機関のバルブタイミング制御装置
DE102009054049B4 (de) * 2009-11-20 2020-08-27 Schaeffler Technologies AG & Co. KG Nockenwellenverstellanordnung
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Also Published As

Publication number Publication date
BR112012017813A2 (pt) 2016-04-19
US8931446B2 (en) 2015-01-13
US20120291735A1 (en) 2012-11-22
EP2529089A1 (de) 2012-12-05
WO2011088939A1 (de) 2011-07-28
CN102725485B (zh) 2016-06-08
CN102725485A (zh) 2012-10-10
KR20120118018A (ko) 2012-10-25
DE102010005602A1 (de) 2011-07-28

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