EP1994262B1 - Dispositif de reglage pour un arbre a cames - Google Patents

Dispositif de reglage pour un arbre a cames Download PDF

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Publication number
EP1994262B1
EP1994262B1 EP07712206A EP07712206A EP1994262B1 EP 1994262 B1 EP1994262 B1 EP 1994262B1 EP 07712206 A EP07712206 A EP 07712206A EP 07712206 A EP07712206 A EP 07712206A EP 1994262 B1 EP1994262 B1 EP 1994262B1
Authority
EP
European Patent Office
Prior art keywords
camshaft
friction lining
brake system
friction
transfer gear
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.)
Not-in-force
Application number
EP07712206A
Other languages
German (de)
English (en)
Other versions
EP1994262A1 (fr
Inventor
Frank Richter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZF Friedrichshafen AG
Original Assignee
ZF Friedrichshafen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Publication of EP1994262A1 publication Critical patent/EP1994262A1/fr
Application granted granted Critical
Publication of EP1994262B1 publication Critical patent/EP1994262B1/fr
Not-in-force 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
    • F01L1/352—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using bevel or epicyclic gear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2810/00—Arrangements solving specific problems in relation with valve gears
    • F01L2810/02—Lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2820/00—Details on specific features characterising valve gear arrangements
    • F01L2820/01—Absolute values
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2101—Cams
    • Y10T74/2102—Adjustable

Definitions

  • the present invention relates to an adjusting device for a camshaft, according to the preamble of patent claim 1.
  • a adjusting device for a camshaft of an internal combustion engine known, soft one driven by a crankshaft of the internal combustion engine drive element, a camshaft of the internal combustion engine driving output element and an actuating element, which is beautschlagt by a brake, wherein by varying the braking torque on the actuator relative rotation between the output element and driven element is reachable.
  • the design of the adjustment allows any phase angle between the drive element and output element.
  • the brake is designed as a non-contact working, electromagnetic brake; preferably a hysteresis brake is used; whose braking torque is independent of the speed.
  • the present invention is therefore based on the object to provide a Vierstellvorrichtüng for a camshaft, which is inexpensive to produce.
  • an adjusting device for a camshaft comprising a brake system and an output side connected to the camshaft and the crankshaft drive side superposition gear, the superposition gear for adjusting the camshaft dissipates a part of the drive-side energy in the brake system, wherein the brake system is designed as a frictional braking system in which the required braking force is generated via a friction lining in permanent slip.
  • the adjusting device according to the invention has an additional mechanical lock.
  • a phase adjustment between the drive-side sprocket or pulley and the output-side camshaft can be made or a phaselage once set are held in position
  • the frictional braking system is designed as an electromagnetically actuated friction system.
  • the ⁇ bertag réellesgetriebe can be designed as a planetary gear or as a transmission with two sun gears and a two-stage planet, with each form of a superposition gear is suitable for use in the system according to the invention.
  • the cost is reduced because expensive elements of non-contact systems are not needed and required in the system fail-safe locking can be made as part of the peel movement in the friction lining.
  • a complete actuator can be saved.
  • FIGURE is a schematic sectional view of a preferred embodiment.
  • the frictional braking system with additional mechanical locking of the adjusting device comprises an electrically actuated switching coil 1, which has a friction surface 8, a magnetic friction lining 2 with a locking element 6 and a spring 3, wherein the locking element 6 with a drive-side element 5 of the superposition gear 7 interacts.
  • the friction lining 2 is axially movable but rotationally fixed to a spur gear 4 of the superposition gear, 7 fixed.
  • the ⁇ beragerungsgstriebe 7 is designed as a transmission with two Sonnenstirnziern 4.9 and a two-stage planet 10.
  • the camshaft is rotatably connected to the second spur gear 9 of the Matterlagerungsgefriebes 7; the drive is connected to the planet carrier.
  • the superposition gear 7 as a planetary gear, it is advantageous to arrange the friction lining 2 on the Finverzahhung; In this case, the camshaft is connected to the ring gear.
  • switching coil 1 When not energized switching coil 1 is no electromagnetic force on the friction lining 2, so that by the force of the spring 3 on the friction lining 2, the spur gear 4 via the friction lining 2 and the locking element 6 is positively connected to the drive-side element 5 of the superposition gear 7.
  • the required phase position can be set and held via a planetary gear set or another transmission gear.
  • the friction lining 2 is flooded oil; This can be done either from the outside (oil mist, etc.) or from the middle of the camshaft.
  • the friction lining 2 can be used as a paper coating with special embossing, comprising e.g. Radial grooves with waffle pattern, or be designed as a carbon coating. In the version as a carbon lining this can have a covering thickness of about 0.05 mm.
  • a carbon coating has the advantage that the wear is very low.
  • the braking torque can also be generated via a mixed friction

Landscapes

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

Claims (5)

  1. Dispositif de réglage pour un arbre à cames, comprenant un système de freinage et une transmission superposée connectée du côté de la sortie à l'arbre à cames et du côté de l'entraînement au vilebrequin, la transmission superposée, pour le réglage de l'arbre à cames, évacuant une partie de l'énergie du côté de l'entraînement dans le système de freinage, le système de freinage étant réalisé sous forme de système de freinage par engagement par friction, dans lequel la force de freinage nécessaire est produite par le biais d'une garniture de friction (2) se trouvant en glissement prolongé et le système de freinage est réalisé sous forme de système de friction à commande électromagnétique, caractérisé en ce que le système de freinage présente une bobine de commutation (1) à commande électrique, qui présente une surface de friction (8), une garniture de friction (2) avec un élément de verrouillage (6) coopérant avec un élément (5) du côté de l'entraînement de la transmission superposée (7) et un ressort (3), la garniture de friction (2) étant fixée de manière axialement mobile mais solidaire en rotation à un pignon droit (4) de la transmission superposée (7), le pignon droit (4), lorsque la bobine de commutation (1) n'est pas alimentée en courant, étant connecté par engagement par correspondance géométrique par la force du ressort (3) par le biais de la garniture de friction (2) et de l'élément de verrouillage (6) à l'élément (5) du côté de l'entraînement de la transmission superposée (7), et lorsque la bobine de commutation (1) est alimentée en courant, sous l'effet de la force magnétique appliquée à la garniture de friction (2), celle-ci pouvant être amenée en appui par sa surface de friction contre la surface de friction (8) de la bobine de commutation (1), de sorte que le couple de freinage produit par la bobine de commutation (1) soit transféré par le biais du pignon droit (4) dans la transmission superposée (7).
  2. Dispositif de réglage pour un arbre à cames selon la revendication 1, caractérisé en ce que la garniture de friction (2) du système de freinage est parcourue d'un flux d'huile qui provient soit de l'extérieur soit du centre de l'arbre à cames.
  3. Dispositif de réglage pour un arbre à cames selon la revendication 2, caractérisé en ce que la garniture de friction (2) est réalisée sous forme de garniture en papier avec un gaufrage spécial ou sous forme de garniture de carbone.
  4. Dispositif de réglage pour un arbre à cames selon l'une quelconque des revendications précédentes, caractérisé en ce que le couple de freinage peut être produit par le biais d'une surface de palier lisse hydrodynamique, et s'établit en l'occurrence par des forces de cisaillement dans le film d'huile de la garniture de friction (2).
  5. Dispositif de réglage pour un arbre à cames selon l'une quelconque des revendications précédentes, caractérisé en ce que la transmission superposée est réalisée sous forme de transmission planétaire ou sous forme de transmission avec deux pignons solaires et un satellite à deux étages.
EP07712206A 2006-03-15 2007-02-12 Dispositif de reglage pour un arbre a cames Not-in-force EP1994262B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006011806A DE102006011806A1 (de) 2006-03-15 2006-03-15 Verstellvorrichtung für eine Nockenwelle
PCT/EP2007/051306 WO2007104620A1 (fr) 2006-03-15 2007-02-12 Dispositif de reglage pour un arbre a cames

Publications (2)

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

Family

ID=38069093

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07712206A Not-in-force EP1994262B1 (fr) 2006-03-15 2007-02-12 Dispositif de reglage pour un arbre a cames

Country Status (7)

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

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006028554B4 (de) 2006-06-22 2018-03-08 Daimler Ag Verstelleinrichtung
DE102008043672A1 (de) 2008-11-12 2010-05-20 Zf Friedrichshafen Ag Ventiltrieb eines Verbrennungskolbenmotors
DE102008043671A1 (de) 2008-11-12 2010-05-20 Zf Friedrichshafen Ag Verstellsystem für Nockenwellen einer Brennkraftmaschine
DE102008043673A1 (de) 2008-11-12 2010-05-20 Zf Friedrichshafen Ag Verstellsystem für Nockenwellen einer Brennkraftmaschine
DE102009026626A1 (de) 2009-06-02 2010-12-09 Zf Friedrichshafen Ag Kupplung oder Bremse in oder an einem Getriebe
DE102010039426A1 (de) 2010-08-18 2012-02-23 Zf Friedrichshafen Ag Ventiltrieb eines Verbrennungskolbenmotors
DE102010039861A1 (de) 2010-08-27 2012-03-01 Zf Friedrichshafen Ag Ventiltrieb eines Verbrennungskolbenmotors
DE102012203984A1 (de) 2012-03-14 2013-09-19 Zf Friedrichshafen Ag Vorrichtung zur Verstellung einer Nockenwelle eines Verbrennungsmotors
DE102020120618A1 (de) 2020-08-05 2022-02-10 Schaeffler Technologies AG & Co. KG Anordnung zur Verstellung einer Nockenwelle zur variablen Ventilsteuerung einer Brennkraftmaschine und Verfahren zum Betrieb einer Anordnung zur Verstellung einer Nockenwelle

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0211809A (ja) 1988-06-29 1990-01-16 Aisin Seiki Co Ltd 弁開閉時期制御装置
JP3785670B2 (ja) * 1996-03-18 2006-06-14 マツダ株式会社 可変バルブタイミング装置
JP2001107712A (ja) 1999-08-03 2001-04-17 Unisia Jecs Corp 内燃機関のバルブタイミング制御装置
JP4072346B2 (ja) * 2002-01-16 2008-04-09 株式会社日立製作所 可変バルブタイミング機構の制御装置
JP3986371B2 (ja) * 2002-06-07 2007-10-03 株式会社日立製作所 内燃機関のバルブタイミング制御装置
DE10355560A1 (de) 2003-11-28 2005-08-11 Daimlerchrysler Ag Verstellvorrichtung für eine Nockenwelle einer Brennkraftmaschine
DE102004033894B4 (de) * 2004-07-14 2009-02-12 Daimler Ag Nockenwellenverstelleinrichtung

Also Published As

Publication number Publication date
DE502007002410D1 (de) 2010-02-04
US20090095124A1 (en) 2009-04-16
JP2009529623A (ja) 2009-08-20
KR20080104264A (ko) 2008-12-02
US7841312B2 (en) 2010-11-30
KR101311689B1 (ko) 2013-09-25
JP4921493B2 (ja) 2012-04-25
EP1994262A1 (fr) 2008-11-26
ATE453041T1 (de) 2010-01-15
DE102006011806A1 (de) 2007-10-04
WO2007104620A1 (fr) 2007-09-20

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