WO2012084284A1 - Déphaseur d'arbre à cames - Google Patents

Déphaseur d'arbre à cames Download PDF

Info

Publication number
WO2012084284A1
WO2012084284A1 PCT/EP2011/066506 EP2011066506W WO2012084284A1 WO 2012084284 A1 WO2012084284 A1 WO 2012084284A1 EP 2011066506 W EP2011066506 W EP 2011066506W WO 2012084284 A1 WO2012084284 A1 WO 2012084284A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
stator
drive wheel
camshaft adjuster
hydraulic channel
Prior art date
Application number
PCT/EP2011/066506
Other languages
German (de)
English (en)
Inventor
Jürgen Weber
Original Assignee
Schaeffler Technologies AG & 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 & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Priority to US13/994,863 priority Critical patent/US20130269639A1/en
Priority to CN201180062173.0A priority patent/CN103270258B/zh
Publication of WO2012084284A1 publication Critical patent/WO2012084284A1/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

Definitions

  • the invention relates to a phaser.
  • Camshaft adjusters are used in internal combustion engines for varying the timing of the combustion chamber valves. Adjusting the timing to the current load lowers fuel consumption and emissions.
  • a common type is the wellgelzellenversteller.
  • Vane adjusters include a stator, a rotor and a drive wheel. The rotor is usually non-rotatably connected to the camshaft. The stator and the drive wheel are also connected to each other with the rotor coaxial with the stator and inside the stator. Rotor and stator characterize oil chambers, which can be acted upon by oil pressure and allow a relative movement between the stator and rotor. Furthermore, the vane cell adjusters have various sealing lids. The composite of stator, drive wheel and sealing cover is formed by a plurality of screw connections.
  • the oil supply of the oil chambers is realized by a plurality of radially arranged holes in the rotor. These open on the one hand in the oil chambers and on the other hand in the hub of the rotor, which in turn is supplied by oil from the camshaft end.
  • the object of the invention is to provide a camshaft adjuster, which has a particularly easy to manufacture oil guide.
  • the camshaft adjuster comprises a drive wheel, a stator and a rotor, wherein the rotor and the stator form two oppositely acting working chambers for relative rotation of the rotor to stator and the stator is rotatably arranged with the drive wheel, such in that at least two of the abovementioned components (drive wheel, stator and rotor) are arranged directly adjacent to one another axially and with their formed contact surfaces delimit a common hydraulic channel, which opens into one of the working chambers. To form a hydraulic channel, two components are arranged axially adjacent to each other. At least one of the components used has a recess.
  • This depression can extend predominantly radially from the hub of the camshaft adjuster to a first working chamber into which it opens.
  • the counterpart on the other component used may have a flat surface or also a depression. If both components are arranged axially adjacent to each other, then a hydraulic channel is formed in the parting line. The hydraulic channel is limited by the contact surfaces, which are arranged in the immediate vicinity of the recess. These contact surfaces seal the hydraulic channel from the environment.
  • the camshaft adjuster comprises a drive wheel, a stator and a rotor, wherein the rotor and the stator form two oppositely acting working chambers for relative rotation of the rotor to stator and the stator is rotatably arranged with the drive wheel, such in that at least two of the abovementioned components (drive wheel, stator and rotor) are arranged indirectly adjacent to one another axially and delimit a common hydraulic channel which opens into one of the working chambers.
  • the components used to form a hydraulic channel may be a drive wheel, a stator, a rotor, a cover, a hood, a disk or a cap.
  • the axial arrangement of the components used is reminiscent of a sandwich construction of the camshaft adjuster.
  • the trained hydraulic channels to the respective working chambers extend as far as possible radially.
  • Other hydraulic channels, for example for oil supply to the lock or vent, are conceivable by further training.
  • the hydraulic channels can be formed by depressions in one of the components.
  • the recess includes beads, grooves, depressions, grooves, impressions or other indentations. If the components are joined together, then hydraulic passages are formed which are largely oil-tight with respect to the environment. These passages extend directly radially or as a combination of axial and radial alignment of an oil flow, usually in the hub of the camshaft adjuster, to the corresponding associated working chamber.
  • the cross-section formed by both components for the flow of hydraulic fluid is advantageously designed to be constant.
  • a locally, specially adapted cross-section for example for the formation of diaphragms, nozzles or diffusers can be formed.
  • both components may have recesses which form a fluid-conducting channel in combination with each other.
  • two for example, largely semicircular depressions, viewed in cross-section, are arranged to form a largely circular channel, viewed in cross-section.
  • the components used to form a hydraulic channel are advantageously formed as a sheet metal part, wherein at least one component may have a recess.
  • the recess is made without cutting by stamping, punching, deep drawing or extrusion.
  • the recess has a constant or variable cross section of its wall.
  • An educated hydraulic channel opens into a first working chamber. This fluid-conductive connection supplies the working chamber with pressure oil in order to rotate the rotor against the stator in an advantageous direction against each other. When the pressure is cut off, this created oil channel can be used as a drain of oil and air to empty the first working chamber.
  • a positive aspect is the surface enlargement through the depression, whereby a heat transport is favored.
  • the oil is thereby adapted to the ambient temperatures.
  • a stable viscosity of the oil is achieved, whereby the camshaft adjuster can work more temperature stable.
  • the rotor has a wing on which a notch is arranged.
  • This notch opens an access for hydraulic oil into a working chamber.
  • the notch is advantageously formed in a rotor made of sheet metal and forms after joining with an axial, peripheral component, a fluid-conducting hydraulic channel. Alternatively, this notch may also be arranged close to the lateral surface on the circumference of the rotor.
  • the notch can be made by punching.
  • An education as a sintered or cast part is possible.
  • Other methods include milling, turning, eroding and other cutting processes.
  • the camshaft adjuster has a locking mechanism which rotatably couples the rotor to the stator.
  • two axially abutting components are arranged such that they form a hydraulic channel which extends from a hub of the camshaft adjuster to the locking mechanism.
  • FIG. 2 shows a cross section of FIG. 1 without rotor
  • FIG. 3 shows a cross section of FIG. 1 with rotor
  • Fig. 4 shows a further section through the camshaft adjuster
  • Fig. 5 shows an arrangement with a stator, a rotor and a hub.
  • Fig. 1 shows a camshaft adjuster 1, which is a drive wheel 2 with a rotatably connected stator 3 and which is arranged concentrically with a rotor 4.
  • the drive wheel 2 and the rotor 4 are mounted on a hub 1 1.
  • the stator 3 forms with the rotor 4 hydraulically loadable working chambers 9, 10. These working chambers are contrary and will work supplied via a hydraulic channel 5 with pressure oil.
  • This hydraulic channel 5 is formed by the rotor 4 and the drive wheel 2.
  • the output gear 2 has different thickness wall sections 2a, 2b.
  • the wall sections 2a, 2b are arranged on the front side with the rotor 4 and open or cover the feed lines.
  • FIG. 2 shows a cross section from FIG. 1.
  • the illustration of the rotor 4 has been omitted here in order to allow a view of the hydraulic channels 5.
  • the outline of the wall section 2a which has a greater thickness than the wall section 2b, coherently follows the inner contour of the stator 3 in the corresponding angular segment. This geometry is arranged at least four times at an angle of 45 °. Due to the axial offset due to the different thickness of the wall sections 2a and 2b, an axial recess is formed to form a hydraulic channel 5.
  • FIG. 3 shows a cross section from FIG. 1 with the rotor 4.
  • the axial contact surface of the rotor 4 with the drive wheel 2 is formed in the regions of the wall sections 2 a. Characterized in that the rotor 4 extends with its wall between the wall of the stator 3 and the hub 1 1, the rotor 4 seals the working chamber 9 from the working chamber 10 and allows only one inlet into the working chamber 10 through the directly by rotor 4, Stator 3 and drive wheel 2 limited hydraulic channel. 5
  • FIG. 4 shows the arrangement of a camshaft adjuster 1 according to FIG. 1 with an angularly offset cross section through the hydraulic medium supply line 16.
  • the rotor 4 forms a hydraulic channel with a notch 6. 14.
  • Rotor 4 and drive wheel 2 are axially adjacent to one another and form contact surfaces 7.
  • the notch 6 and the drive wheel 2 together form a hydraulic channel 14.
  • the contact surfaces 7 seal off the hydraulic channel 14, so that a defined position of the supply line is ensured.
  • the rotor 4 has a locking mechanism 12.
  • the locking mechanism 12 locks or unlocks the rotor 4 with the stator 3 in the direction of rotation of the camshaft adjuster 1.
  • a supply of hydraulic oil for actuating the locking mechanism 12 can be effected by a design of a hydraulic channel according to the invention.
  • FIG. 3 shows a stator 3 with a coaxially arranged rotor 4 located therein.
  • the stator 3 and the rotor 4 form counteracting working elements. chambers 9, 10, which are druckölbeaufschlagbar.
  • the arrangement shown here originates from the camshaft adjuster 1 according to FIG. 1 and FIG. 2.
  • the rotor 4 and the stator 3 are arranged on a hub 11.
  • Pressure oil or hydraulic fluid flows from the hydraulic fluid supply line 15 of the hub 1 1 in the circumferential groove 17 and distributed on the circumference. Furthermore, then the pressure oil flows through the rotor 4 fixed and integrally connected wing 8 to the notch 6, which forms a hydraulic channel 14 together with the drive wheel 2, not shown here.
  • the supply of pressure oil or hydraulic fluid through the hydraulic channel 14 according to the invention takes place in the working chamber 9.
  • the working chamber 10 is supplied by the hydraulic channel 5 in FIG.

Landscapes

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

Abstract

L'invention concerne un ensemble déphaseur d'arbre à cames (1) qui comprend une roue d'entraînement (2), un stator (3) et un rotor (4), des conduits hydrauliques (5) et (14) étant formés par des surfaces de contact (7) des éléments axialement adjacents, tels que la roue d'entraînement (2), le stator (3) et le rotor (4), ainsi que par des encoches (6).
PCT/EP2011/066506 2010-12-21 2011-09-22 Déphaseur d'arbre à cames WO2012084284A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US13/994,863 US20130269639A1 (en) 2010-12-21 2011-09-22 Camshaft adjuster
CN201180062173.0A CN103270258B (zh) 2010-12-21 2011-09-22 凸轮轴调节器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010063700 DE102010063700A1 (de) 2010-12-21 2010-12-21 Nockenellenversteller
DE102010063700.9 2010-12-21

Publications (1)

Publication Number Publication Date
WO2012084284A1 true WO2012084284A1 (fr) 2012-06-28

Family

ID=44658762

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/066506 WO2012084284A1 (fr) 2010-12-21 2011-09-22 Déphaseur d'arbre à cames

Country Status (4)

Country Link
US (1) US20130269639A1 (fr)
CN (1) CN103270258B (fr)
DE (1) DE102010063700A1 (fr)
WO (1) WO2012084284A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010009393A1 (de) * 2010-02-26 2011-09-01 Schaeffler Technologies Gmbh & Co. Kg Vorrichtung zur variablen Einstellung der Steuerzeiten von Gaswechselventilen einer Brennkraftmaschine
DE102013203244A1 (de) * 2013-02-27 2014-08-28 Schaeffler Technologies Gmbh & Co. Kg Nockenwellenversteller
DE102014209178B4 (de) 2014-03-20 2020-12-03 Schaeffler Technologies AG & Co. KG Hydraulischer Nockenwellenversteller, zumindest zweiteiliger Rotor des hydraulischen Nockenwellenverstellers sowie Verfahren zur Herstellung des Rotors des hydraulischen Nockenwellenverstellers
DE102015200145B4 (de) * 2015-01-08 2021-12-30 Schaeffler Technologies AG & Co. KG Hydraulischer Nockenwellenversteller mit einstellbarem Verstellbereich
US10287932B2 (en) * 2016-09-19 2019-05-14 Schaeffler Technologies AG & Co. KG Camshaft phasing system including idler gear phaser for internal combustion engines

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0799976A1 (fr) * 1996-04-03 1997-10-08 Toyota Jidosha Kabushiki Kaisha Dispositif de variation du calage des soupapes d'un moteur à combustion interne
JPH09324613A (ja) * 1996-04-04 1997-12-16 Toyota Motor Corp 内燃機関の可変バルブタイミング機構
EP0892155A1 (fr) * 1997-07-17 1999-01-20 Mitsubishi Denki Kabushiki Kaisha Dispositif hydraulique de variation de calage de distribution
EP1128026A2 (fr) * 1999-12-28 2001-08-29 Borg Warner Inc. Dispositif de variation de calage d'arbre à cames avec piston de verrouillage intégré à une ailette du rotor
US20030033999A1 (en) * 2001-08-14 2003-02-20 Marty Gardner Torsional assisted cam phaser for four cylinder engines having two check valves in rotor between chambers and spool valve
EP1447529A1 (fr) * 2003-02-07 2004-08-18 BorgWarner Inc. Déphaseur avec un seul clapet anti-retour de recirculation et un clapet d'admission
JP2005264950A (ja) * 1993-05-03 2005-09-29 Borgwarner Inc カム軸に伝達する手段への流体源からの液圧流体の流れを制御する方法
DE102005026553B3 (de) * 2005-06-08 2006-09-07 Hydraulik-Ring Gmbh Schwenkmotor mit verringerter Leckage
DE102007020526A1 (de) * 2007-05-02 2008-11-06 Schaeffler Kg Nockenwellenversteller für eine Brennkraftmaschine mit verbesserter Ausführung der Druckräume
EP2072767A2 (fr) * 2007-12-20 2009-06-24 Aisin Seiki Kabushiki Kaisha Déphaseur d'arbre à cames
DE102008050134A1 (de) * 2008-10-04 2010-04-15 Entec Consulting Gmbh Einrichtung zur Nockenwellenverstellung für Verbrennungskraftmaschinen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100242589B1 (ko) * 1996-04-04 2000-03-02 와다 아끼히로 내연기관의 가변밸브 타이밍기구
JP4177197B2 (ja) * 2003-08-08 2008-11-05 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
DE102004028868A1 (de) * 2004-06-15 2006-01-05 Ina-Schaeffler Kg Brennkraftmaschine mit einer hydraulischen Vorrichtung zur Drehwinkelverstellung einer Nockenwelle gegenüber einer Kurbelwelle
DE102006004760A1 (de) * 2006-02-02 2007-10-11 Schaeffler Kg Hydraulischer Nockenwellenversteller

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005264950A (ja) * 1993-05-03 2005-09-29 Borgwarner Inc カム軸に伝達する手段への流体源からの液圧流体の流れを制御する方法
EP0799976A1 (fr) * 1996-04-03 1997-10-08 Toyota Jidosha Kabushiki Kaisha Dispositif de variation du calage des soupapes d'un moteur à combustion interne
JPH09324613A (ja) * 1996-04-04 1997-12-16 Toyota Motor Corp 内燃機関の可変バルブタイミング機構
EP0892155A1 (fr) * 1997-07-17 1999-01-20 Mitsubishi Denki Kabushiki Kaisha Dispositif hydraulique de variation de calage de distribution
EP1128026A2 (fr) * 1999-12-28 2001-08-29 Borg Warner Inc. Dispositif de variation de calage d'arbre à cames avec piston de verrouillage intégré à une ailette du rotor
US20030033999A1 (en) * 2001-08-14 2003-02-20 Marty Gardner Torsional assisted cam phaser for four cylinder engines having two check valves in rotor between chambers and spool valve
EP1286023A2 (fr) * 2001-08-14 2003-02-26 BorgWarner Inc. Déphaseur pour un moteur à combustion interne à quatre cylindre
EP1447529A1 (fr) * 2003-02-07 2004-08-18 BorgWarner Inc. Déphaseur avec un seul clapet anti-retour de recirculation et un clapet d'admission
DE102005026553B3 (de) * 2005-06-08 2006-09-07 Hydraulik-Ring Gmbh Schwenkmotor mit verringerter Leckage
DE102007020526A1 (de) * 2007-05-02 2008-11-06 Schaeffler Kg Nockenwellenversteller für eine Brennkraftmaschine mit verbesserter Ausführung der Druckräume
EP2072767A2 (fr) * 2007-12-20 2009-06-24 Aisin Seiki Kabushiki Kaisha Déphaseur d'arbre à cames
DE102008050134A1 (de) * 2008-10-04 2010-04-15 Entec Consulting Gmbh Einrichtung zur Nockenwellenverstellung für Verbrennungskraftmaschinen

Also Published As

Publication number Publication date
DE102010063700A1 (de) 2012-06-21
CN103270258B (zh) 2016-08-24
US20130269639A1 (en) 2013-10-17
CN103270258A (zh) 2013-08-28

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