EP1370749A1 - Dispositif permettant de regler l'angle de rotation relatif d'un arbre a cames d'un moteur a combustion interne par rapport a une roue motrice - Google Patents

Dispositif permettant de regler l'angle de rotation relatif d'un arbre a cames d'un moteur a combustion interne par rapport a une roue motrice

Info

Publication number
EP1370749A1
EP1370749A1 EP02710050A EP02710050A EP1370749A1 EP 1370749 A1 EP1370749 A1 EP 1370749A1 EP 02710050 A EP02710050 A EP 02710050A EP 02710050 A EP02710050 A EP 02710050A EP 1370749 A1 EP1370749 A1 EP 1370749A1
Authority
EP
European Patent Office
Prior art keywords
camshaft
inner part
wings
combustion engine
internal combustion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02710050A
Other languages
German (de)
English (en)
Other versions
EP1370749B1 (fr
Inventor
Gerold Sluka
Edwin Palesch
Alfred Trzmiel
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.)
Dr Ing HCF Porsche AG
Hilite Germany GmbH
Original Assignee
Dr Ing HCF Porsche AG
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 Dr Ing HCF Porsche AG, Hydraulik Ring GmbH filed Critical Dr Ing HCF Porsche AG
Publication of EP1370749A1 publication Critical patent/EP1370749A1/fr
Application granted granted Critical
Publication of EP1370749B1 publication Critical patent/EP1370749B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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

Definitions

  • the invention relates to a device for the relative rotation angle adjustment of a camshaft of an internal combustion engine to a drive wheel according to the preamble of the main claim.
  • a so-called vane cell camshaft adjuster in which recesses are provided on the end faces of the rotor blades, in which roller-shaped rolling elements are accommodated. These rolling elements serve to reduce the frictional forces between the drive wheel and the impeller (rotor), the rolling elements being supported on one side directly in the recess and on the other side directly on the inner wall of the drive wheel.
  • the pressurization to the two pressure chambers provided in one side wall of the rotor blades is advantageously carried out via an opening in each case, which is connected to the pressure chambers adjoining the blades.
  • the pressure oil supply for adjusting the inner part or rotor can thus be used simultaneously for pressurizing the pressure chambers provided in the rotor blades. Additional pressure lines for supplying the pressure chambers are therefore not necessary.
  • FIG. 1 shows a section through a camshaft adjuster
  • FIG. 2 shows a section along the line II-II in FIG. 1
  • FIG. 3 shows an enlarged view of a rotor blade
  • FIG. 4 shows a section along the line IV-IV in FIG. 3 and
  • Fig. 5 is a view of the end face of a rotor blade in the assembled state of the camshaft adjuster s.
  • the camshaft of an internal combustion engine is schematically indicated at 2, at the free end of which an inner part, hereinafter referred to as rotor 4, of an adjusting unit 5 is arranged.
  • the rotor 4 is provided with five radially arranged vanes 6a to 6e, which start from a hub S of the rotor 4.
  • the rotor 4 is in the area of its blades 6a to 6e by a cellular wheel 10 comprises, which is provided with five inwardly projecting radial webs 12a to 12e.
  • the cell wheel 10 forming the stator of the adjusting unit 5 is closed on its end face facing the camshaft 2 by a chain wheel 14 which is rotatably and sealingly guided on the hub 8 of the rotor 4.
  • the sprocket 14 serves as a drive for the camshaft 2, which takes place, for example, via a drive chain connected to the crankshaft.
  • the opposite end face of the cellular wheel 10 is closed by a disk 16, the chain wheel 14 and the disk 16 being firmly connected to the cellular wheel 10 by means of fastening screws 18.
  • the through holes 20 provided in the webs 12a to 12e in the cellular wheel 10 serve to receive or guide these fastening screws 18.
  • Five webs delimited in the axial direction by the chain wheel 14 and the disk 16 are formed by the webs 12a to 12e of the cellular wheel 10, which are divided into two pressure chambers 22a to 22e and 24a to 24e by the blades 6a to 6e of the rotor 4.
  • the rotor 4 and the cell wheel 10 rotatably guided on it are attached to the camshaft 2 by means of a cylinder screw (not shown).
  • the hub 10 has a central bore 26 for receiving the cylinder screw.
  • a signal transmitter disk 30 is attached to the outside of the rotor 4, with the aid of which the rotational position of the camshaft 2 relative to the crankshaft can be detected.
  • the five axial bores 32a to 32e arranged in the hub 8 of the rotor 4 represent part of the oil supply channels for the pressure chambers 24a to 24e.
  • the pressure chambers 22a to 22e are also provided with hydraulic oil via radial bores (not shown) arranged in the hub 8 provided.
  • the hydraulic oil supply for the two pressure chambers 22a to 22e and 24a to 24e takes place via a camshaft bearing 34, to which corresponding control lines for the oil pressure supply to the adjusting unit 5 are connected.
  • the way in which the oil is supplied to the pressure chambers 22a to 22e or 24a to 24e is, for. B. from DE 199 39 711 Cl known, so that the exact design of the oil supply channels to the pressure chambers is not discussed further.
  • the side wall 36 adjoining the chain wheel 14 and the side wall 38 adjoining the disk 16 of the wings 6a to 6e each have two recesses 40 and 42 forming a pressure chamber, both of which are separated from one another by a central web 44.
  • the pressure chambers 40 are connected to the pressure chambers 22a to 22e via a channel 46 and the pressure chambers 42 are connected to the pressure chambers 24a to 24e via a channel 48.
  • the two chambers 40 and 42 formed on one side surface of each of the wings 6a to 6e extend essentially over the entire side surface.
  • a pressure cushion is alternately built up in the pressure chambers 40 and 42, which contributes to reducing the friction between the wings 6a to 6e and the adjacent sprocket 14 and side cover 16.
  • the pressure chambers 22a to 22e are acted upon by hydraulic oil. Via the pressure chambers 22a to 22e, the hydraulic oil passes through the channels 46 into the pressure chambers 40, in which a corresponding pressure cushion is built up.
  • the pressure spaces 24a to 24e are acted upon in an analogous manner with hydraulic oil.
  • the hydraulic oil passes through the pressure chambers 24a to 24e and the channels 48 into the pressure chambers 42, so that a friction-reducing pressure cushion is also formed in the side region of the wings 6a to 6e in this adjustment direction.

Landscapes

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

Abstract

La présente invention concerne un dispositif permettant de régler l'angle de rotation relatif d'un arbre à cames d'un moteur à combustion interne par rapport à une roue motrice. Ce dispositif comprend une partie interne (4), qui est solidaire en rotation de l'arbre à cames (2) et qui présente des ailettes (6a à 6e) s'étendant au moins approximativement en direction radiale, ainsi qu'une roue à alvéoles (10) entraînée, qui présente plusieurs alvéoles réparties sur sa périphérie et délimitées par des ailettes (12a à 12e). Ces alvéoles sont chacune divisées en deux chambres de pression (22a à 22e ou 24a à 24e) par les ailettes (6a à 6e) de la partie interne (4) qui sont guidées dans ces alvéoles de façon à pouvoir exécuter un mouvement angulaire. Lorsque ces chambres de pression sont soumises à une pression hydraulique ou libérées de cette pression au moyen de lignes de commande, l'arbre à cames peut, par l'intermédiaire desdites ailettes, tourner par rapport à la roue à alvéoles (10), entre deux positions finales. La partie interne (4) est délimitée latéralement par deux éléments de protection (14, 16) qui sont connectés à la roue à alvéoles. L'objectif de la présente invention est de réduire le frottement entre les ailettes (6a à 6e) de la partie interne (4) et les éléments de protection (14, 16) dans les parois latérales (36, 38) des ailettes (6a à 6e) qui sont orientées vers les éléments de protection (14, 16). Cet objectif est atteint par des évidements (40, 42) formant des cavités, qui sont alimentés au moins partiellement en huile hydraulique lorsque le moteur à combustion interne est en service.
EP02710050A 2001-03-14 2002-01-30 Dispositif permettant de regler l'angle de rotation relatif d'un arbre a cames d'un moteur a combustion interne par rapport a une roue motrice Expired - Lifetime EP1370749B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10112206 2001-03-14
DE10112206A DE10112206A1 (de) 2001-03-14 2001-03-14 Vorrichtung zur relativen Drehwinkelverstellung einer Nockenwelle einer Brennkraftmaschine zu einem Antriebsrad
PCT/EP2002/000927 WO2002073008A1 (fr) 2001-03-14 2002-01-30 Dispositif permettant de regler l'angle de rotation relatif d'un arbre a cames d'un moteur a combustion interne par rapport a une roue motrice

Publications (2)

Publication Number Publication Date
EP1370749A1 true EP1370749A1 (fr) 2003-12-17
EP1370749B1 EP1370749B1 (fr) 2008-02-13

Family

ID=7677398

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02710050A Expired - Lifetime EP1370749B1 (fr) 2001-03-14 2002-01-30 Dispositif permettant de regler l'angle de rotation relatif d'un arbre a cames d'un moteur a combustion interne par rapport a une roue motrice

Country Status (5)

Country Link
US (1) US6668777B2 (fr)
EP (1) EP1370749B1 (fr)
JP (1) JP2004518868A (fr)
DE (2) DE10112206A1 (fr)
WO (1) WO2002073008A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6883480B1 (en) * 2003-12-19 2005-04-26 Hydraulik-Ring Gmbh Camshaft adjuster for internal combustion engines of motor vehicles
DE102004028868A1 (de) * 2004-06-15 2006-01-05 Ina-Schaeffler Kg Brennkraftmaschine mit einer hydraulischen Vorrichtung zur Drehwinkelverstellung einer Nockenwelle gegenüber einer Kurbelwelle
GB2438341B (en) * 2005-03-03 2010-10-20 Oceaneering Int Inc Rotary actuator
JP4930791B2 (ja) * 2007-12-20 2012-05-16 アイシン精機株式会社 弁開閉時期制御装置
DE102009037394B4 (de) 2009-08-13 2020-06-04 Schaeffler Technologies AG & Co. KG Nockenwellenversteller
US8555836B2 (en) * 2010-12-10 2013-10-15 Delphi Technologies, Inc. Electric drive camshaft phaser with torque rate limit at travel stops
US9341089B2 (en) 2014-04-04 2016-05-17 RB Distribution, Inc. Camshaft phaser

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE346145B (fr) * 1970-05-26 1972-06-26 Uva Ab
DE3024306A1 (de) 1980-06-27 1982-01-21 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg Gleitlager fuer oszillierende schwenkbewegungen
US5836276A (en) * 1996-08-09 1998-11-17 Denso Corporation Rotational phase adjusting apparatus having fluid reservoir
DE19708661B4 (de) * 1997-03-04 2005-06-16 Ina-Schaeffler Kg Vorrichtung zur Variierung der Ventilsteuerzeiten einer Brennkraftmaschine, insbesondere Nockenwellen-Verstelleinrichtung nach dem Flügelzellenprinzip
JPH11153009A (ja) * 1997-09-16 1999-06-08 Denso Corp 内燃機関用バルブタイミング調整装置
DE19745908B4 (de) 1997-10-17 2004-03-04 Ina-Schaeffler Kg Vorrichtung zum Verändern der Steuerzeiten von Gaswechselventilen einer Brennkraftmaschine, wobei die Vorrichtung als Flügelzellen-Verstelleinrichtung ausgebildet ist
JPH11182216A (ja) * 1997-12-25 1999-07-06 Unisia Jecs Corp 内燃機関のバルブタイミング制御装置
DE19819995A1 (de) * 1998-05-05 1999-11-11 Porsche Ag Vorrichtung zur hydraulischen Drehwinkelverstellung einer Welle zu einem Antriebsrad
DE19939711B4 (de) 1999-08-21 2015-03-12 Saurer Germany Gmbh & Co. Kg Verfahren und Vorrichtung zur Detektierung von Fremdkörpern in einem längsbewegten Faden
JP2000240414A (ja) 1999-02-16 2000-09-05 Mitsubishi Electric Corp ベーン式油圧アクチュエータ
JP2001055914A (ja) * 1999-08-17 2001-02-27 Unisia Jecs Corp 内燃機関のバルブタイミング制御装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO02073008A1 *

Also Published As

Publication number Publication date
DE10112206A1 (de) 2002-09-26
EP1370749B1 (fr) 2008-02-13
US6668777B2 (en) 2003-12-30
DE50211670D1 (de) 2008-03-27
WO2002073008A1 (fr) 2002-09-19
US20030106512A1 (en) 2003-06-12
JP2004518868A (ja) 2004-06-24

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