EP3347578A1 - Nockenwellenversteller - Google Patents
NockenwellenverstellerInfo
- Publication number
- EP3347578A1 EP3347578A1 EP16770885.8A EP16770885A EP3347578A1 EP 3347578 A1 EP3347578 A1 EP 3347578A1 EP 16770885 A EP16770885 A EP 16770885A EP 3347578 A1 EP3347578 A1 EP 3347578A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- adjusting device
- gear
- housing
- 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.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 abstract description 5
- 239000000314 lubricant Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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
- F01L1/352—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
-
- 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
-
- 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
- F01L2001/0476—Camshaft bearings
-
- 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
- F01L2001/3522—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 with electromagnetic brake
Definitions
- the invention relates to a suitable for a camshaft adjuster an internal combustion engine actuator having a housing, an associated with this drive wheel, an adjusting, in particular three-shaft gear, such as wave gear, as well as for connection to a shaft, in particular the camshaft of the internal combustion engine, provided output member.
- camshaft adjusters Such adjusting devices in camshaft adjusters are known, for example, from US 2007/0051332 A1 and from WO 2006/018080 A1. In both cases, these are electrically operated camshaft adjusters.
- camshaft adjuster with a slide bearing is disclosed in US 201 3 / 0081587A1.
- Electrically actuated adjusting devices in internal combustion engines can be used not only with camshaft adjusters, but also, for example, with devices for adjusting the valve lift and / or the compression.
- the invention has for its object to further develop a suitable for a camshaft adjuster with respect to the cited prior art in particular with regard to robust, reliable bearings at the same time compact design.
- suitable adjusting device comprises a composed of any number of individual parts housing, connected to the housing or formed as an integral part of the housing drive wheel, a control gear , In particular in the form of a three-shaft gear, for example, wave gear, as well as a for connection to a driven shaft, in particular camshaft, provided output member.
- a slide bearing is provided, which, viewed in the axial direction of the driven shaft, is arranged between the actuating gear and the drive wheel.
- a flange is connected to the front side, which projects beyond the output element in the radial direction.
- the sliding bearing is adjacent to the flange, which may be part of the actuating gear;
- the sliding bearing is arranged axially between the flange and the drive wheel.
- the plain bearing is particularly space-saving with a small axial distance to the drive wheel housed in the housing, which means a special insensitivity to tilting due to the low effective Hebelarmin.
- the output element is at the same time designed as a stop disc for the driven shaft, in particular camshaft.
- the stop disc which limits an adjustment angle of the driven shaft, preferably has a cylindrical, to the axis of rotation of the drive wheel and
- Output element concentric recess in which one end of the driven shaft or an intermediate piece connected thereto can be placed to produce a rotationally fixed connection.
- the housing of the adjusting device in the region of the plain bearing axial grooves and / or has at least one groove extending in the circumferential direction.
- Such grooves favor in particular the lubricant flow within the adjusting device.
- the adjusting gear connected to said flange or integrally formed Abtriebshohlrad, which is mounted by means of a second sliding bearing in the housing.
- the output ring gear can be internally toothed or firmly connected to a sleeve-shaped, internally toothed component.
- a particularly robust construction of the adjusting device is realized by the double slide bearing.
- the two sliding bearings may have different axial dimensions.
- the first, axially disposed between the actuating gear and the drive bearing plain bearing has a smaller diameter and a larger axial extent than the second, the output ring gear overlapping plain bearing. The lever lengths are shortened again.
- the advantage of the arrangement of the first sliding bearing axially between the drive wheel and the actuating gear, in particular wave gear, compared to a principle possible sliding bearing of a toothed component, in particular Abtriebshohlrads, in the housing has the particular advantage that particularly low lever lengths, measured in the axial direction of the camshaft adjuster , are given and thus at most to a small extent not desired, potentially increasing the friction tilting moments are generated within the camshaft adjuster.
- the at least one sliding bearing of the adjusting device may have friction and / or wear-reducing coatings. It is also possible to incorporate lubricants in lubricating materials or to impregnate the corresponding materials with lubricants, so that particularly advantageous lubricant compounds are given by friction.
- FIG. 1 shows a first embodiment of an adjusting device for a camshaft adjuster in a sectional representation, 2 and 3 respectively in perspective view different variants of a component for an adjusting device of a camshaft adjuster,
- FIG. 4 shows an illustration analogous to FIG. 1 of a second exemplary embodiment of an adjusting device of a camshaft adjuster
- FIG. 6 shows a diagram of a comparison between the adjusting device according to FIG. 1 and the device according to FIG. 5.
- FIG. 5 shows a basically possible, unclaimed design of an adjusting device 1 of a camshaft adjuster of an internal combustion engine.
- the same reference numerals for basically equivalent parts in conjunction with FIG. 5 on the one hand and in the embodiments of FIGS. 1 to 4 on the other hand used.
- the adjusting devices 1 shown in the various figures have in common that they have a housing 2, wherein a toothed drive wheel 3 is an integral part of the housing 2 or fixedly connected to housing components.
- the drive wheel 3 is driven by a not shown traction means, that is, a chain or a toothed belt in a conventional manner by the crankshaft of an internal combustion engine.
- a drive of the adjusting device 1 via toothed wheels and / or a king shaft is also considered.
- a control gear 4 which is designed as a three-shaft gear, namely wave gear.
- an actuating shaft 5 is provided, which is actuated by an electric motor, not shown, of the camshaft adjuster.
- the actuating gear 4 is a high-gear transmission, wherein a speed deviation between the camshaft and the actuating shaft 5 leads to a relatively small change in the phase relation between the camshaft and crankshaft.
- Abtriebshohlrad 7 a deviating from the angular velocity of the housing 2 angular velocity, namely, in the case of an adjustment of the camshaft, may have, within the housing 2 is a sliding bearing 8 between the
- Output ring gear 7 and the housing 2 is provided.
- the output ring gear 7 transmits its rotation via a flange 9 to an output member 10, wherein the
- Output ring gear 7 can be integrally formed with the flange 9.
- Output member 10 is designed in each of the outlined designs - both in the claimed and in the unclaimed cases - as a stop disc, which is connectable to the camshaft and limits the displacement of the camshaft.
- the output element 10 always fulfills a dual function.
- the sliding bearing 8 is arranged axially between the actuating gear 4 and the drive wheel 3, which contributes significantly to the low lever arm length Ik.
- the plain bearing 8 is formed between the output element 10 and a generally designated by the reference numeral 1 1 gear component, which includes the toothed drive wheel 3.
- the end face of the driven element 10 arranged flange 9 is connected to both the output ring gear 7 and with the
- Output element 10 rotatably connected and projects beyond the output member 10 in the radial direction, based on the common axis of rotation of the output ring gear 7, output element 10 and camshaft.
- the output ring gear 7 in turn is connected to the circumference of the flange 9 with this, that is arranged radially outside of the flange 9.
- Figures 2 and 3 show different variants of the transmission component 1 1, which are each used in the camshaft adjuster 1 of FIG.
- axial grooves 12 are on the inner circumference of the transmission component 1 1, which forms a bearing surface of the sliding bearing 8 recognizable.
- no grooves extending in the axial direction are present in the region of the slide bearing 8.
- This groove 13 not only favors - as well as the axial grooves 12 in the case of Fig. 2 - the distribution of lubricant, but also facilitates the processing of the reduced by the circumferential groove 13 bearing surface of the sliding bearing eighth
- FIG. 4 shows a further developed embodiment of an adjusting device 1 of a camshaft adjuster.
- the slide bearing 8 which is located axially between the drive wheel 3 and the actuating gear 4, namely, wave gear
- another sliding bearing 14 can be seen.
- the sliding bearing 14 is the output ring gear 7 - comparable to the design of FIG. 5 - slidably mounted in the housing 2.
- a particularly stable double slide bearing 8, 14 is given.
- the extent of the first primary slide bearing 8 in the axial direction of the actuator 1 is greater than the extension of the second, second slide bearing 14 measured in the same direction.
- the diagram of Fig. 6 refers to a comparison between the adjusting device 1 of FIG. 1 and the sketched in Fig. 5 design.
- K denotes the ketone tenkraft, which in which the drive wheel 3 driving traction means, that is, the chain acts.
- L bearing friction in the sliding bearing 8 is designated.
- the upper, dot-dash line in Fig. 6 refers to the unclaimed design of Fig. 5; the lower dashed line on the embodiment of FIG. 1.
- Clearly recognizable is the reduced bearing friction of the embodiment of FIG. 1 in all operating conditions. In principle, the same relationship applies to a comparison between the embodiment according to FIG. 4 and the design according to FIG. 5.
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)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015217296 | 2015-09-10 | ||
PCT/DE2016/200420 WO2017041801A1 (de) | 2015-09-10 | 2016-09-07 | Nockenwellenversteller |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3347578A1 true EP3347578A1 (de) | 2018-07-18 |
EP3347578B1 EP3347578B1 (de) | 2019-06-19 |
Family
ID=57003300
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16770885.8A Active EP3347578B1 (de) | 2015-09-10 | 2016-09-07 | Nockenwellenversteller |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3347578B1 (de) |
JP (1) | JP6800959B2 (de) |
CN (1) | CN108026799B (de) |
DE (1) | DE102016216927A1 (de) |
WO (1) | WO2017041801A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10287932B2 (en) * | 2016-09-19 | 2019-05-14 | Schaeffler Technologies AG & Co. KG | Camshaft phasing system including idler gear phaser for internal combustion engines |
DE102017115882B4 (de) | 2017-07-14 | 2023-11-09 | Schaeffler Technologies AG & Co. KG | Elektrischer Nockenwellenversteller zur variablen Einstellung der Ventilsteuerzeiten einer Brennkraftmaschine |
DE102017128423A1 (de) | 2017-11-30 | 2019-06-06 | Schaeffler Technologies AG & Co. KG | Wellgetriebe |
DE102018128930B4 (de) | 2018-11-19 | 2023-06-29 | Schaeffler Technologies AG & Co. KG | Wellgetriebe, Verfahren zur Herstellung eines Wellgetriebes und Nockenwellenversteller mit einem Wellgetriebe |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7089897B2 (en) * | 2002-07-11 | 2006-08-15 | Ina-Schaeffler Kg | Electrically driven camshaft adjuster |
DE102004038681B4 (de) | 2004-08-10 | 2017-06-01 | Schaeffler Technologies AG & Co. KG | Elektromotorischer Nockenwellenversteller |
JP4390078B2 (ja) | 2005-09-05 | 2009-12-24 | 株式会社デンソー | バルブタイミング調整装置 |
JP4900286B2 (ja) * | 2008-03-04 | 2012-03-21 | 株式会社デンソー | バルブタイミング調整装置 |
JP5288311B2 (ja) * | 2009-04-03 | 2013-09-11 | Ntn株式会社 | 可変バルブタイミング装置 |
US8555836B2 (en) * | 2010-12-10 | 2013-10-15 | Delphi Technologies, Inc. | Electric drive camshaft phaser with torque rate limit at travel stops |
US8516983B2 (en) | 2011-09-30 | 2013-08-27 | Delphi Technologies, Inc. | Harmonic drive camshaft phaser with a harmonic drive ring to prevent ball cage deflection |
JP2013167181A (ja) * | 2012-02-15 | 2013-08-29 | Hitachi Automotive Systems Ltd | 内燃機関のバルブタイミング制御装置 |
JP2014074388A (ja) * | 2012-10-05 | 2014-04-24 | Denso Corp | バルブタイミング調整装置 |
CN104838096A (zh) * | 2012-12-10 | 2015-08-12 | 博格华纳公司 | 电动马达驱动的简易行星凸轮相位器 |
JP5862696B2 (ja) * | 2014-01-29 | 2016-02-16 | 株式会社日本自動車部品総合研究所 | バルブタイミング調整装置 |
-
2016
- 2016-09-07 EP EP16770885.8A patent/EP3347578B1/de active Active
- 2016-09-07 WO PCT/DE2016/200420 patent/WO2017041801A1/de active Application Filing
- 2016-09-07 DE DE102016216927.0A patent/DE102016216927A1/de not_active Withdrawn
- 2016-09-07 CN CN201680050942.8A patent/CN108026799B/zh active Active
- 2016-09-07 JP JP2018512528A patent/JP6800959B2/ja active Active
Also Published As
Publication number | Publication date |
---|---|
CN108026799B (zh) | 2020-06-30 |
JP2018530695A (ja) | 2018-10-18 |
WO2017041801A1 (de) | 2017-03-16 |
EP3347578B1 (de) | 2019-06-19 |
CN108026799A (zh) | 2018-05-11 |
DE102016216927A1 (de) | 2017-03-16 |
JP6800959B2 (ja) | 2020-12-16 |
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