EP2215333A1 - Modular aufgebauter nockenwellenversteller mit ketten- oder riemenrad - Google Patents
Modular aufgebauter nockenwellenversteller mit ketten- oder riemenradInfo
- Publication number
- EP2215333A1 EP2215333A1 EP08852005A EP08852005A EP2215333A1 EP 2215333 A1 EP2215333 A1 EP 2215333A1 EP 08852005 A EP08852005 A EP 08852005A EP 08852005 A EP08852005 A EP 08852005A EP 2215333 A1 EP2215333 A1 EP 2215333A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wheel
- camshaft adjuster
- wall
- annular
- chain
- 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
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
- F01L2301/00—Using particular materials
-
- 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 modular camshaft adjuster with chain or pulley for the camshaft drive of an internal combustion engine having the features of the preamble of claim 1.
- Camshafts of internal combustion engines are usually driven by a chain or a timing belt of crankshafts and thereby continuously adjusted in a closed loop, with typical adjustment ranges are at 40 to 60 ° crank angle. To be set crank angle are stored in maps. Adjustments are made z. B. hydraulic, fed from the engine oil circuit via an electrically operated control valve and allow optimized valve timing over the parameters engine load and speed. Depending on the engine concept and the number of adjusters so a significant reduction in fuel consumption and exhaust emissions and an increase in power and torque can be achieved.
- US 2005/0051121 A1 discloses a camshaft adjuster with chain or belt pulley for a camshaft drive of an internal combustion engine.
- the housing of the camshaft adjuster is including a profiled groove of aluminum or magnesium.
- the profiled groove accommodates the chain or pulley made of steel.
- the profiled groove complicates the manufacture of the housing of the camshaft adjuster and the mounting of the chain or pulley on the housing is complex.
- Known from DE 103 03 991 A1 is a modular camshaft adjuster for the camshaft drive of an internal combustion engine with a chain or pulley having a radially outwardly directed wheel rim with a tooth engagement depth Z.
- the chain or pulley is provided with an annular wheel bed around a central, circular opening.
- a substantially cylindrical wheel wall projects with a wall thickness X in the axial direction from the annular wheel bed, so that the wheel wall with the wheel bed forms a pot shape, wherein the wall thickness X of the substantially cylindrical wheel wall below the one wheel rim is a multiple of the meshing depth Z, so that radially distributed holes in the substantially cylindrical wheel wall have space for the coaxial assembly of the chain or pulley to a stator of the camshaft adjuster (s. Fig. 2, supra).
- the massive wall thickness X of the cylindrical wheel wall of DE 103 03 991 A1 results in increased weight of the chain or belt wheels and thus a disadvantageously increased total mass of camshaft adjuster and chain or pulleys.
- Cup-shaped low-mass chain or belt pulleys have correspondingly limited stability and deform under heavy loads from driving chains or belts, which can impair the camshaft drive and thus lead to engine damage.
- the object of the invention is to provide a modular camshaft adjuster with a chain or pulley for the camshaft drive of an internal combustion engine with improved carrying capacity at low total mass.
- a modular camshaft adjuster for a camshaft drive of an internal combustion engine has a chain or belt wheel with an annular wheel bed around a central, circular opening for receiving a camshaft on which the chain or belt wheel is mounted via a rotor of the camshaft adjuster , Radially directed outwards at least one wheel rim with tooth engagement depths Z is provided on the chain or belt wheel.
- a substantially cylindrical wheel wall with a minimum wall thickness X cantilevered in the axial direction of the annular Radbett at the outer periphery and forms a cup shape with the wheel bed, for sufficient carrying capacity, the minimum wall thickness X of the projecting from the annular Radbett wheel wall below the at least one Radkranzes equal half the meshing depth Z is.
- At least one wheel rim is arranged in the projecting area of the wheel wall.
- the cup-shaped chain or pulley for reduced weight is made of a lightweight material such as aluminum. Radially distributed holes in the annular wheel bed are used for coaxial assembly of the chain or pulley to a stator of the camshaft adjuster.
- the particularly large delay of cup-shaped chain or belt wheels is reduced after a heat treatment.
- the cup-shaped chain or pulley is provided with at least one substantially radially directed stiffening rib from the annular wheel bed to the wheel wall for weight-optimized stiffening on the circumference of the cup-shaped chain or pulley.
- the wheel wall protrudes from the outer edge of the side facing away from the camshaft adjuster side of the camshaft adjuster.
- the stiffening ribs are configured at an angle, stage or with curves to optimize the stiffening in constructional conditions and load conditions.
- Fig. 2 an alternative cup-shaped sprocket according to the invention
- FIG. 3 shows another alternative cup-shaped sprocket according to the invention.
- FIG. 1 A cup-shaped sprocket 1 made of a lightweight material such as aluminum is coaxial with a modular steel made camshaft adjuster 2 an internal combustion engine (not shown) mounted with radially evenly distributed screws 3 through an annular Radbett 4 of the cup-shaped sprocket 1, a stator 5 and a front cover 6 of the camshaft adjuster 2.
- a central, circular opening 7 in the annular wheel bed 4 serves to receive a camshaft (not shown) on which the sprocket 1 is rotatably supported via the camshaft adjuster 2.
- a bearing 8 of the camshaft in a rotor 9 of the camshaft adjuster 2 has lubricant openings 10.
- Fig. 2 Corresponding features are designated by the reference numerals of Fig. 1.
- the pointing away from the camshaft adjuster 2 wheel wall 11 of the cup-shaped sprocket 1 made of aluminum has at its free end 13 to a minimum wall thickness X, which is greater than the tooth engagement depth Z and from the free end 13 radially inwardly increases linearly to the annular Radbett 4 for a substantially truncated cone-shaped stiffener 14 of the wheel bed 4 and the wheel wall 11 around the circumference thereof, wherein recesses in the stiffener 14 are provided for the heads of the screws 3.
- FIG. 3 Corresponding features are designated by the reference symbols from FIGS. 1 and 2.
- the cylindrical wheel wall 11 of the cup-shaped sprocket 1 made of aluminum has at its free end 13 a minimum wall thickness X, which is slightly larger than the tooth engagement depth Z. From the free end 13 of the cylindrical wheel wall 11 extend radially inwardly towards the wheel bed 4 over the circumference evenly distributed stiffening ribs 15, the wall thickness initially increases quasi-linearly to about about 1/3 of the total axial extent of the wheel wall 11 to about twice the tooth engagement depth Z. The wall thickness of the stiffening ribs 15 then increases with a radial shoulder 16 to about three times the tooth engagement depth Z to the annular Radbett 4. Between the ribs 15, the heads of the screws 3 are provided.
- the cylindrical wheel wall 11 with minimum wall thickness X projects more than the width of a wheel rim 12 in the axial direction of the annular Radbett 4 on the outer circumference freely, the width of a wheel rim 12 is at least 5 mm.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Pulleys (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007056550A DE102007056550A1 (de) | 2007-11-23 | 2007-11-23 | Modular aufgebauter Nockenwellenversteller mit Ketten- oder Riemenrad |
PCT/EP2008/064943 WO2009065731A1 (de) | 2007-11-23 | 2008-11-04 | Modular aufgebauter nockenwellenversteller mit ketten- oder riemenrad |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2215333A1 true EP2215333A1 (de) | 2010-08-11 |
EP2215333B1 EP2215333B1 (de) | 2011-10-19 |
Family
ID=40566274
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08852005A Not-in-force EP2215333B1 (de) | 2007-11-23 | 2008-11-04 | Modular aufgebauter nockenwellenversteller mit ketten- oder riemenrad |
Country Status (6)
Country | Link |
---|---|
US (1) | US20100242876A1 (de) |
EP (1) | EP2215333B1 (de) |
CN (1) | CN101970810B (de) |
AT (1) | ATE529614T1 (de) |
DE (1) | DE102007056550A1 (de) |
WO (1) | WO2009065731A1 (de) |
Family Cites Families (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5163872A (en) * | 1989-10-10 | 1992-11-17 | General Motors Corporation | Compact camshaft phasing drive |
JPH0547309U (ja) * | 1991-11-28 | 1993-06-22 | 株式会社ユニシアジェックス | 内燃機関のバルブタイミング制御装置 |
JP3014893B2 (ja) * | 1993-05-19 | 2000-02-28 | 株式会社デンソー | バルブタイミング調整装置 |
DE19608652A1 (de) * | 1996-03-06 | 1997-09-11 | Schaeffler Waelzlager Kg | Vorrichtung zum Verändern der Öffnungs- und Schließzeiten von Gaswechselventilen einer Brennkraftmaschine |
JP3744594B2 (ja) * | 1996-05-15 | 2006-02-15 | アイシン精機株式会社 | 弁開閉時期制御装置 |
JP3116858B2 (ja) * | 1996-11-29 | 2000-12-11 | トヨタ自動車株式会社 | 内燃機関のバルブタイミング可変機構 |
JP3620684B2 (ja) * | 1997-01-31 | 2005-02-16 | 株式会社デンソー | 内燃機関用バルブタイミング調整装置 |
JP3760566B2 (ja) * | 1997-06-05 | 2006-03-29 | アイシン精機株式会社 | 弁開閉時期制御装置 |
US6311654B1 (en) * | 1998-07-29 | 2001-11-06 | Denso Corporation | Valve timing adjusting device |
JP3983457B2 (ja) * | 2000-06-22 | 2007-09-26 | 株式会社日立製作所 | 内燃機関のバルブタイミング変更装置 |
JP2002180809A (ja) * | 2000-10-04 | 2002-06-26 | Denso Corp | バルブタイミング調整装置の製造方法 |
DE10134320A1 (de) * | 2001-07-14 | 2003-01-23 | Ina Schaeffler Kg | Vorrichtung zum Verändern der Steuerzeiten von Gaswechselventilen einer Brennkraftmaschine, insbesondere Rotationskolben-Verstelleinrichtung zur Drehwinkelverstellung einer Nockenwelle gegenüber einer Kurbelwelle |
US6732688B2 (en) * | 2001-08-10 | 2004-05-11 | Unisia Jecs Corporation | Valve timing control system for internal combustion engine |
DE10163791A1 (de) * | 2001-12-22 | 2003-07-03 | Ina Schaeffler Kg | Vorrichtung zum Verändern der Steuerzeiten von Gaswechselventilen einer Brennkraftmaschine, insbesondere Rotationskolben-Verstelleinrichtung zur Drehwinkelverstellung einer Nockenwelle gegenüber einer Kurbelwelle |
JP3873778B2 (ja) * | 2002-02-28 | 2007-01-24 | アイシン精機株式会社 | 弁開閉時期制御装置 |
JP3986331B2 (ja) * | 2002-03-07 | 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 |
DE50311096D1 (de) * | 2002-07-24 | 2009-03-05 | Schaeffler Kg | Vorrichtung zur veränderung der steuerzeiten einer brennkraftmaschine |
DE10303991A1 (de) | 2003-02-01 | 2004-08-05 | Hydraulik-Ring Gmbh | Einrichtung zur Verstellung einer Nockenwelle einer Brennkraftmaschine eines Kraftfahrzeuges |
DE10331631B3 (de) | 2003-06-30 | 2005-01-05 | Ehw Thale Sintermetall Gmbh | Bauteil |
DE10332881A1 (de) | 2003-07-19 | 2005-02-10 | Ina-Schaeffler Kg | Vorrichtung zum Verändern der Steuerzeiten von Gaswechselventilen einer Brennkraftmaschine, insbesondere Rotationskolben-Verstelleinrichtung zur Drehwinkelverstellung einer Nockenwelle gegenüber einer Kurbelwelle |
US20050051121A1 (en) | 2003-09-05 | 2005-03-10 | Borgwarner Inc. | Variable camshaft timing phaser having a housing and a driving element of two different materials |
JP4161370B2 (ja) * | 2003-12-15 | 2008-10-08 | 株式会社デンソー | バルブタイミング調整装置 |
DE10359068A1 (de) * | 2003-12-16 | 2005-07-21 | Ina-Schaeffler Kg | Brennkraftmaschine mit einer hydraulischen Vorrichtung zur Drehwinkelverstellung einer Nockenwelle gegenüber einer Kurbelwelle |
DE10358888B4 (de) * | 2003-12-16 | 2018-12-27 | Schaeffler Technologies AG & Co. KG | Brennkraftmaschine mit einer hydraulischen Vorrichtung zur Drehwinkelverstellung einer Nockenwelle gegenüber einer Kurbelwelle |
DE102004028868A1 (de) * | 2004-06-15 | 2006-01-05 | Ina-Schaeffler Kg | Brennkraftmaschine mit einer hydraulischen Vorrichtung zur Drehwinkelverstellung einer Nockenwelle gegenüber einer Kurbelwelle |
EP1754864B9 (de) * | 2004-06-22 | 2012-10-17 | Aisin Seiki Kabushiki Kaisha | Vorrichtung zur zeitsteuerung des öffnens/schliessens eines ventils |
JP4160545B2 (ja) * | 2004-06-28 | 2008-10-01 | 株式会社デンソー | バルブタイミング調整装置 |
JP2006070915A (ja) * | 2004-08-31 | 2006-03-16 | Nidec Nissin Corp | プラスチック歯車およびプラスチック複合歯車 |
US20060260578A1 (en) * | 2005-05-20 | 2006-11-23 | Schaeffler Kg | Apparatus for the variable setting of the control times of gas exchange valves of an internal combustion engine |
JP4448826B2 (ja) * | 2006-01-26 | 2010-04-14 | 株式会社日立製作所 | 位相可変装置および内燃機関用カム軸位相可変装置 |
JP4229464B2 (ja) * | 2006-08-23 | 2009-02-25 | 株式会社日立製作所 | 位相可変装置および内燃機関用カム軸位相可変装置 |
DE102007004184A1 (de) * | 2007-01-27 | 2008-07-31 | Schaeffler Kg | Kombinierte Verriegelungs- und Drehwinkelbegrenzungseinrichtung eines Nockenwellenverstellers |
JP4851475B2 (ja) * | 2008-02-08 | 2012-01-11 | 株式会社デンソー | バルブタイミング調整装置 |
DE102009042168A1 (de) * | 2008-10-14 | 2010-04-15 | Schaeffler Kg | Nockenwellenversteller und Abtriebsadapter für eine konzentrische Nockenwelle |
-
2007
- 2007-11-23 DE DE102007056550A patent/DE102007056550A1/de not_active Withdrawn
-
2008
- 2008-11-04 WO PCT/EP2008/064943 patent/WO2009065731A1/de active Application Filing
- 2008-11-04 EP EP08852005A patent/EP2215333B1/de not_active Not-in-force
- 2008-11-04 AT AT08852005T patent/ATE529614T1/de active
- 2008-11-04 CN CN200880117535XA patent/CN101970810B/zh not_active Expired - Fee Related
- 2008-11-04 US US12/744,142 patent/US20100242876A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2009065731A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20100242876A1 (en) | 2010-09-30 |
WO2009065731A1 (de) | 2009-05-28 |
ATE529614T1 (de) | 2011-11-15 |
EP2215333B1 (de) | 2011-10-19 |
CN101970810A (zh) | 2011-02-09 |
CN101970810B (zh) | 2013-05-22 |
DE102007056550A1 (de) | 2009-05-28 |
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