EP2771550A1 - Camshaft adjusting means - Google Patents
Camshaft adjusting meansInfo
- Publication number
- EP2771550A1 EP2771550A1 EP12770026.8A EP12770026A EP2771550A1 EP 2771550 A1 EP2771550 A1 EP 2771550A1 EP 12770026 A EP12770026 A EP 12770026A EP 2771550 A1 EP2771550 A1 EP 2771550A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- camshaft
- adjusting
- drive
- bearing
- shaft
- 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.)
- Withdrawn
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
- F01L1/34403—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 helically teethed sleeve or gear moving axially between crankshaft and camshaft
-
- 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
Definitions
- the invention relates to a camshaft adjustment according to the preamble of claim 1.
- An electric camshaft adjuster of an internal combustion engine is known from DE 10 2005 018 956 A1 or DE 102 48 355 A1.
- the camshaft is driven by the crankshaft at half-turn, for which purpose a camshaft drive wheel of the camshaft is coupled to the crankshaft.
- An adjusting between camshaft and camshaft drive allows an adjustment of the phase position of the camshaft drive gear and the camshaft.
- the adjusting mechanism can be designed, for example, as a double planetary gear or as a harmonic drive gearbox.
- the permanently mounted on the internal combustion engine Versteilmotor (electric motor) for the adjusting makes a radial compensation coupling between the motor shaft of the electric motor and the input shaft of the variable required, as shown in DE 10 2005 018 956 A1.
- DE 103 52 255 A1 shows a camshaft adjuster with a trained as a three-shaft gear adjustment drive.
- the electric motor is arranged spatially separated from the adjusting shaft of the adjusting gear - the adjusting torque is transmitted by a flexible shaft.
- a variant provides that the engine, the motor shaft is parallel to the camshaft and the adjusting torque is introduced via a designed as a chain drive, belt drive or the like. Secondary drive.
- the object of the present invention is to propose a camshaft adjustment with a Dreiwellengtriebe and stationary drive motor in relation to the known solutions improved design.
- the trained as a three-shaft gearbox has at its drive and its driven side depending on a bearing point and is about these bearings relative to the camshaft bearing component, the cylinder head of the internal combustion engine stored, wherein the adjusting torque from the drive motor in the adjusting gear introductory adjusting is guided by one of the bearing points in the adjusting.
- This hollow shaft may be an extension of the camshaft, which is designed as a separate component, as a hollow shaft part and extends it.
- the output side of the variable speed is designed as a hollow shaft, wherein the adjusting is guided by the hollow camshaft and the driven side in the adjusting.
- the introduction of the torque causing the adjustment takes place from the other end of the camshaft forth via an adjusting shaft extending within the camshaft.
- the output side is directly connected to the camshaft and so stored on a bearing the camshaft at the end bearing.
- the bearing the output side, the output side associated bearing is formed here by the Nockenwellenla- ger.
- the output side is connected via a flange with the camshaft.
- the adjustment drive according to the invention is thus subsequently attachable to the camshaft.
- the output side is connected via a firmly connected to the camshaft shaft part.
- the output side is here connected via an extension with the camshaft, coupled with this.
- the bearing associated with the output is formed by the camshaft bearing or by a bearing supporting the extension.
- the storage of the drive side via an executed in particular as a separate component extension of the camshaft, which is passed through the adjusting gear and on which a drive wheel, via which the drive torque is introduced for the camshaft, is rotatably mounted.
- This embodiment provides for a bearing of the drive wheel on the particular designed as a hollow shaft part extension of the camshaft.
- the storage of the drive side is seated in a bearing receiving part, which is mounted directly in or on a wall of an internal combustion engine.
- the bearing can be arranged directly in the cylinder head wall or a receiving part which can be fastened to the cylinder head.
- the drive motor is aligned via a centering with respect to the wall of the internal combustion engine or the bearing receiving part. Due to the provided cylinder-head-side mounting of the input and output side, the drive motor and the adjusting shaft can be aligned with respect to the transmission by means of a simple centering.
- FIG. 1 shows a section through the camshaft adjustment according to the invention.
- a hollow camshaft 1 (or a camshaft extending and firmly connected to this shaft part) is received at its one end in a bearing 2, which supports the camshaft 1 relative to the cylinder head of an internal combustion engine, not shown.
- the protruding through the bearing 2 end of the camshaft 1 is equipped with the flange as formed output 3 of an adjusting rotatably connected.
- the camshaft 1 is driven by a drive wheel 4 via a gear train, not shown, of the crankshaft of the internal combustion engine.
- the driving side of the adjusting drive forming the drive wheel 4 is rotatably mounted on a short hollow shaft, a hollow shaft part 5, which is connected directly to the output 3 and thus the camshaft 1.
- This hollow shaft part 5 is rotatably supported by a bearing 6 in a bearing receiving part 12 and, wherein this bearing receiving part 12 is embedded in a wall of the cylinder head or fixed to the wall of the cylinder head. As shown, there is thus ever a bearing 2, 6 on the drive and the driven side of the variable.
- a drive motor 7 embodied as an electric motor is seated outside the cylinder head and, via an adjusting shaft 8 designed as an extension of the motor shaft, directs the torque required for the relative rotation of the drive and driven side into the adjusting mechanism.
- the adjusting shaft 8 passes through the hollow shaft part 5 supporting bearing 6 and the hollow shaft part 5 itself and is connected at its end located in the adjusting gear with a pinion 9 which drives via intermediate gears 10, the spur gears 1 1 of a Vorgetriebes, via which then the adjustment, the Rotation between the drive wheel 4 and output 3 takes place in a not shown here and known per se gear part.
- FIG. 2 shows the section A-A according to FIG. 1 and shows parts of the flange forming the output 3, the pinion 9 driven by the adjusting shaft, the intermediate wheels 10 and the spur gears 11 of the pre-transmission.
- FIG. 3 is a perspective view of the compactly constructed camshaft adjuster.
- the bearing receiving part 12, which carries the drive motor 7, is shown here in a simplified cylindrical form and is attached to a cylinder head (not shown) or inserted in a receptacle provided there.
- the flange forming the output 3 of the variable speed drive is connected directly to the camshaft 1 or to a shaft part fixedly connected to the camshaft.
- the camshaft 1 ending at the flange or the shaft part which extends this is guided through a bearing 2, which sits in a bearing receptacle of a cylinder head (not shown).
- the adjusting gear on its drive and its driven side depending on a bearing 6, 2 and is about these bearings 6, 2 relative to the camshaft 1 supporting component, the cylinder head of the internal combustion engine stored.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011117026.3A DE102011117026B4 (en) | 2011-10-27 | 2011-10-27 | camshaft adjustment |
PCT/EP2012/068453 WO2013060532A1 (en) | 2011-10-27 | 2012-09-19 | Camshaft adjusting means |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2771550A1 true EP2771550A1 (en) | 2014-09-03 |
Family
ID=47008527
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12770026.8A Withdrawn EP2771550A1 (en) | 2011-10-27 | 2012-09-19 | Camshaft adjusting means |
Country Status (7)
Country | Link |
---|---|
US (1) | US9109474B2 (en) |
EP (1) | EP2771550A1 (en) |
JP (1) | JP2014532826A (en) |
KR (1) | KR20140078701A (en) |
CN (1) | CN103906897B (en) |
DE (1) | DE102011117026B4 (en) |
WO (1) | WO2013060532A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013012051A1 (en) * | 2013-06-25 | 2015-01-08 | Daimler Ag | Stellgetriebe, in particular for a camshaft adjuster |
WO2020056732A1 (en) * | 2018-09-21 | 2020-03-26 | 舍弗勒技术股份两合公司 | Torque transmission member and centering tool for centering assembly of torque transmission member |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10211607A1 (en) * | 2002-03-12 | 2003-10-09 | Porsche Ag | Drive for valve train controls of vehicles, preferably of camshaft adjusters |
DE10248355A1 (en) | 2002-10-17 | 2004-04-29 | Ina-Schaeffler Kg | Camshaft adjuster with electric drive |
JP4160491B2 (en) | 2003-03-28 | 2008-10-01 | 株式会社デンソー | Valve timing adjustment device |
DE10352255B4 (en) | 2003-11-08 | 2017-03-09 | Schaeffler Technologies AG & Co. KG | Adjustment device for adjusting the relative angular position of a camshaft relative to a crankshaft of an internal combustion engine |
DE102004041751B4 (en) | 2004-08-28 | 2020-01-16 | Schaeffler Technologies AG & Co. KG | Camshaft adjuster with a coupling between an actuating shaft and an adjusting gear |
DE102005018956A1 (en) | 2005-04-23 | 2006-11-23 | Schaeffler Kg | Device for adjusting the camshaft of an internal combustion engine |
JP2008095549A (en) * | 2006-10-06 | 2008-04-24 | Denso Corp | Valve timing adjusting device |
JP4506817B2 (en) | 2007-11-13 | 2010-07-21 | 株式会社デンソー | Valve timing adjustment device |
DE102009054049B4 (en) * | 2009-11-20 | 2020-08-27 | Schaeffler Technologies AG & Co. KG | Camshaft timing arrangement |
-
2011
- 2011-10-27 DE DE102011117026.3A patent/DE102011117026B4/en active Active
-
2012
- 2012-09-19 WO PCT/EP2012/068453 patent/WO2013060532A1/en active Application Filing
- 2012-09-19 JP JP2014537539A patent/JP2014532826A/en not_active Withdrawn
- 2012-09-19 EP EP12770026.8A patent/EP2771550A1/en not_active Withdrawn
- 2012-09-19 KR KR1020147010859A patent/KR20140078701A/en not_active Application Discontinuation
- 2012-09-19 US US14/348,991 patent/US9109474B2/en active Active
- 2012-09-19 CN CN201280053141.9A patent/CN103906897B/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2013060532A1 * |
Also Published As
Publication number | Publication date |
---|---|
US9109474B2 (en) | 2015-08-18 |
CN103906897B (en) | 2016-08-24 |
WO2013060532A1 (en) | 2013-05-02 |
CN103906897A (en) | 2014-07-02 |
DE102011117026A1 (en) | 2013-05-02 |
JP2014532826A (en) | 2014-12-08 |
KR20140078701A (en) | 2014-06-25 |
US20140290607A1 (en) | 2014-10-02 |
DE102011117026B4 (en) | 2015-01-08 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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17Q | First examination report despatched |
Effective date: 20150407 |
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RIC1 | Information provided on ipc code assigned before grant |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20160401 |