EP2300694A1 - Nockenwellenversteller - Google Patents
NockenwellenverstellerInfo
- Publication number
- EP2300694A1 EP2300694A1 EP09779653A EP09779653A EP2300694A1 EP 2300694 A1 EP2300694 A1 EP 2300694A1 EP 09779653 A EP09779653 A EP 09779653A EP 09779653 A EP09779653 A EP 09779653A EP 2300694 A1 EP2300694 A1 EP 2300694A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stator
- sealing cover
- rotor
- contact surface
- camshaft adjuster
- 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
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
-
- 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
-
- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49229—Prime mover or fluid pump making
- Y10T29/49293—Camshaft making
Definitions
- the invention relates to a camshaft adjuster with the features of the preamble of claim 1.
- a generic camshaft adjuster with a sealing cover there referred to as side legs, known, which has an annular disk-shaped base body which is connected via a screw connection to the stator and sealingly abuts a rotor of the camshaft adjuster.
- the sealing cover has an annular disk-shaped base body, which merges at its radially inner end into an axial-cylindrical extension.
- the object of the invention is to provide a camshaft adjuster with reduced internal leakage losses.
- the solution is achieved in that the sealing cover, the stator and / or the rotor has a convex, concave or conical contact surface and the sealing cover is elastically deformable by the attachment over the contact surface.
- the proposed solution in addition to the applied by the attachment of the sealing cover holding force a sealing force generated by the elastic deformation of the sealing cover, so that the sealing force can be increased overall. Due to the increased sealing force, any existing gap between the sealing cover and the stator or the rotor is reduced and thus also the possible internal leakage losses.
- a minimal axial gap between the rotor and the sealing cover can be set by the bending deformation by the bending deformation of the sealing cover.
- the sealing cap is fastened to the stator by screws and abuts against it to form a static seal.
- the increased sealing force is then preferably taken over the static seal against the stator, while the dynamic seal between the sealing cover and rotor formed by the axial gap is just as far adjustable that the rotor can still rotate freely relative to the sealing cover.
- the increase in the sealing force can be dimensioned structurally simple by the convex, concave or conical contact surface is arranged on the sealing cover, the rotor or the stator, and the opposite contact surface on the sealing cover, the rotor or the stator is formed by a plane plane.
- the degree of elastic deformation and the resulting sealing force can be determined very simply, since only one contact surface causes the deformation.
- only one contact surface must be processed by a corresponding surface treatment or other shaping, while the respective other contact surface need not be changed, whereby the resulting costs are reduced.
- a further reduction of the manufacturing costs can be achieved by providing the convex, concave or conical bearing surface on the sealing cover.
- the adjustability of the axial gap can be particularly easily generated by the contact surface on the sealing cover is convex or conical, and the sealing cover is connected in its outer region to the stator. Due to the convex or conical shape of the contact surface of the sealing cover has a distance from the stator before attachment to the stator in the outer region. The sealing cover is then used by the attachment in its outer region to the stator, so that it undergoes elastic deformation and is pressed at its radially inner side starting from the attachment to the stator or the rotor.
- the abutment surface on the stator should preferably be formed by a convex or a plane plane, i. It should be avoided that the contact surface has a concave shape.
- the contact surface in any case a concave shape due to manufacturing inaccuracies should therefore always preferred a slightly convex shape can be chosen so that the contact surface forms at least a plane even under deviations form.
- a concave bearing surface would cancel out or at least weaken the deliberately induced effect of the elastic deformation of the sealing cover.
- the sealing cover has on its radially inner side directed away from the contact surface annular extension. Due to the extension, the sealing cover is stiffened overall in relation to the internal stresses generated by the fastening, so that it also has a very high dimensional accuracy under load.
- a camshaft adjuster 1 with a stator 4, which is driven by a crankshaft, not shown, of an internal combustion engine, and a rotatably connected to a camshaft rotor 5 can be seen.
- a plurality of working chambers 6 are arranged, which is bounded laterally by the sealing cover 7 and the sealing disc 8.
- the working chambers 6 are formed by radially inwardly projecting projections of the stator 4, which are supported on the radially inner diameter of the rotor 5.
- the working chambers 6 are e.g.
- the sealing cover 7 is connected to a plurality of circumferentially distributed screws 12 fixed to the stator 4, wherein the screws 12 are screwed into the radially inwardly directed projections.
- the sealing cover 7 is formed by an annular disc-shaped base body 13 and an annular extension 9 adjoining the radial inner side. The annular extension 9 is arranged such that it is directed away from the rotor 5 and the stator 4 and serves to receive a not-shown the camshaft adjacent radial shaft seal.
- the sealing cover 7 can be seen prior to its attachment to the stator 4.
- the annular disk-shaped basic body 13 has a convex or even conical bearing surface 14, by means of which a radially outwardly increasing distance "A" is created to the opposite planar contact surface 15a of the stator 4.
- A radially outwardly increasing distance
- the stator 4 is arranged with the elements arranged thereon plan to detect contact surfaces 15a and 15b, at which then the sealing cover 7 and the sealing disc 8 are arranged in the stator 4 is a Einschraubbohrung 17 is provided, in which the sealing cover 7 by screwing through the through hole 16 of the sealing cover 7 guided screw 12 attached During the tightening of the screw 12, the gap "A" undergoes elastic deformation of the annular disk-shaped main body 13 tightened the sealing cover 7.
- a convex design of the contact surface 14 has the advantage that the gap "A" is continuously reduced, thereby continuously enlarging the available sealing surface, which becomes elastic as a result of the elastic deformation of the base body 13 in the fastened state illustrated in FIG a sealing force exerted radially inwardly by the screw 12 and exerted on the bearing surface 15a by the contact surface 14.
- the gap "A” is drawn so that it can be adjusted by the bias.
- the increased by the elastic deformation sealing force is then reliably prevented that between the sealing cover 7 and the stator 4 during operation, a gap may arise or any existing gap widens.
- the annular extension 9 has the advantage that the annular disk-shaped base body 13 is stiffened in particular in the region directed radially inward by the screw 12, so that the sealing cover 7 also has a high dimensional accuracy with respect to high external forces or in continuous operation of the camshaft adjuster. Overall, it must be ensured in the design of the preformed sealing cover 7 that the increased sealing forces can not lead to a clamping of the rotor 5 relative to the sealing cover 7. This can be ensured by the increased sealing forces are essentially taken up by the stator 4, or when tightening the screws 12 of the axial gap "A" is not completely drawn, but only so far that the rotor 5 still rotate relative to the sealing cover 7 can.
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)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008032031A DE102008032031A1 (de) | 2008-07-07 | 2008-07-07 | Nockenwellenversteller |
| PCT/EP2009/056962 WO2010003745A1 (de) | 2008-07-07 | 2009-06-05 | Nockenwellenversteller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2300694A1 true EP2300694A1 (de) | 2011-03-30 |
| EP2300694B1 EP2300694B1 (de) | 2011-12-28 |
Family
ID=40934076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09779653A Active EP2300694B1 (de) | 2008-07-07 | 2009-06-05 | Nockenwellenversteller |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US8434438B2 (de) |
| EP (1) | EP2300694B1 (de) |
| KR (1) | KR101531956B1 (de) |
| CN (1) | CN102089501B (de) |
| AT (1) | ATE539239T1 (de) |
| DE (1) | DE102008032031A1 (de) |
| WO (1) | WO2010003745A1 (de) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012200099A1 (de) | 2012-01-05 | 2013-07-11 | Schaeffler Technologies AG & Co. KG | Nockenwellenversteller |
| DE102013200967A1 (de) * | 2013-01-22 | 2014-07-24 | Schaeffler Technologies Gmbh & Co. Kg | Nockenwellenversteller |
| DE102016221197A1 (de) | 2016-10-27 | 2018-05-03 | Schaeffler Technologies AG & Co. KG | Nockenwellenversteller mit spannungsoptimiertem Schraubverband für eine drehfeste Anbindung an eine Nockenwelle |
| DE102018214675B3 (de) | 2018-08-29 | 2019-12-12 | Audi Ag | Verfahren zum Herstellen eines Gehäuses und Kraftfahrzeug |
| CN111734511B (zh) * | 2019-03-25 | 2024-06-04 | 舍弗勒投资(中国)有限公司 | 密封盖和凸轮轴相位调节器 |
| WO2023141898A1 (zh) * | 2022-01-27 | 2023-08-03 | 舍弗勒技术股份两合公司 | 凸轮相位调节器 |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0192504A (ja) * | 1987-09-30 | 1989-04-11 | Aisin Seiki Co Ltd | 弁開閉時期制御装置 |
| JP3077621B2 (ja) * | 1996-04-09 | 2000-08-14 | トヨタ自動車株式会社 | 内燃機関の可変バルブタイミング機構 |
| DE19756016A1 (de) * | 1997-12-17 | 1999-06-24 | Porsche Ag | Vorrichtung zur hydraulischen Drehwinkelverstellung einer Welle zu einem Antriebsrad |
| DE19808618A1 (de) * | 1998-02-28 | 1999-09-02 | Schaeffler Waelzlager Ohg | Verriegelungseinrichtung für eine Vorrichtung zum Verändern der Steuerzeiten von Gaswechselventilen einer Brennkraftmaschine, insbesondere für eine Flügelzellen-Verstelleinrichtung |
| DE19961193B4 (de) * | 1999-12-18 | 2009-06-10 | Schaeffler Kg | Rotationskolbenversteller |
| 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 |
| 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 |
| DE102004005822B4 (de) * | 2004-02-06 | 2018-05-30 | Schaeffler Technologies AG & Co. KG | Brennkraftmaschine mit einer hydraulischen Vorrichtung zur Drehwinkelverstellung einer Nockenwelle gegenüber einer Kurbelwelle |
| DE102004012460B3 (de) | 2004-03-11 | 2005-10-13 | Hydraulik-Ring Gmbh | Nockenwellenversteller mit konstruktiv frei wählbarer Verriegelungsposition |
| DE102004062071A1 (de) | 2004-12-23 | 2006-07-06 | Schaeffler Kg | Nockenwellenversteller für eine Brennkraftmaschine |
| DE102004062036A1 (de) | 2004-12-23 | 2006-07-27 | Schaeffler Kg | Nockenwellenversteller für eine Brennkraftmaschine |
| CN1325771C (zh) | 2005-01-19 | 2007-07-11 | 重庆宗申技术开发研究有限公司 | 一种汽油发动机可变配气相位机构 |
| DE102005020529A1 (de) | 2005-05-03 | 2006-11-09 | Schaeffler Kg | Nockenwellenversteller |
-
2008
- 2008-07-07 DE DE102008032031A patent/DE102008032031A1/de not_active Withdrawn
-
2009
- 2009-06-05 CN CN2009801266669A patent/CN102089501B/zh active Active
- 2009-06-05 AT AT09779653T patent/ATE539239T1/de active
- 2009-06-05 EP EP09779653A patent/EP2300694B1/de active Active
- 2009-06-05 US US13/002,803 patent/US8434438B2/en active Active
- 2009-06-05 WO PCT/EP2009/056962 patent/WO2010003745A1/de not_active Ceased
- 2009-06-05 KR KR1020117000266A patent/KR101531956B1/ko active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2010003745A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101531956B1 (ko) | 2015-06-26 |
| CN102089501A (zh) | 2011-06-08 |
| WO2010003745A1 (de) | 2010-01-14 |
| US20110114048A1 (en) | 2011-05-19 |
| ATE539239T1 (de) | 2012-01-15 |
| DE102008032031A1 (de) | 2010-01-14 |
| KR20110044967A (ko) | 2011-05-03 |
| EP2300694B1 (de) | 2011-12-28 |
| US8434438B2 (en) | 2013-05-07 |
| CN102089501B (zh) | 2013-06-19 |
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