EP2888457A1 - Vorrichtung zur phasenverschiebung des drehwinkels eines antriebsteils zu einem abtriebsteil - Google Patents
Vorrichtung zur phasenverschiebung des drehwinkels eines antriebsteils zu einem abtriebsteilInfo
- Publication number
- EP2888457A1 EP2888457A1 EP13730538.9A EP13730538A EP2888457A1 EP 2888457 A1 EP2888457 A1 EP 2888457A1 EP 13730538 A EP13730538 A EP 13730538A EP 2888457 A1 EP2888457 A1 EP 2888457A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gear
- rotation
- drive part
- angle
- ring gear
- 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- Withdrawn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
- 230000033001 locomotion Effects 0.000 claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 18
- 230000010363 phase shift Effects 0.000 claims description 11
- 238000002485 combustion reaction Methods 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000013519 translation Methods 0.000 description 3
- 230000014616 translation Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012546 transfer 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
Definitions
- the invention relates to a device for phase shifting the rotational angle of a drive part to a driven part with a first gear which is driven by the drive part and at least a first Hohfrad, a first sun gear and a first motion transmission element, via which a movement coupling between the first sun gear and the the first ring gear, a second gear, which is coupled to the first gear and drives the driven part and at least a second ring gear, a second sun gear and a second motion transmission element, via which a motion coupling between the second sun gear and the second ring gear and an actuator over which the first gear to the second gear is phase-shifted.
- Such devices are known in particular for the phase shift between a crankshaft and a camshaft of an internal combustion engine.
- the phase shift is used for variable valve timing to improve the charge cycle in the engine.
- the actuators used are operated electrically via an electric motor or hydraulically.
- three-shaft transmissions have been found in which the displacement between the drive shaft and the output shaft via the intermediate control shaft is performed.
- actuators are used, which are not desired adjustment rotate synchronously with the gear, or actuators, which the
- a device for cam shafts adjustment of an internal combustion engine disclosed serve as a transmission two planetary gear connected in series, with the two gear sharing the sun gear and the planetary gears.
- a difference of the number of teeth of the first ring gear to the second ring gear is formed during a relative movement of the planet to the ring gears a phase shift between the crankshaft and the camshaft.
- a similar transmission is known from DE 73 37 206 Ul. Also, this transmission consists essentially of two successively connected planetary gears, wherein the two planetary gear sets are attached to a common planet carrier.
- the drive shaft drives a first sun gear, whereby the planet carrier is rotated over the first planetary gears.
- the second planetary gears are rotated, which transmit this movement to the second sun gear, which is rotatably connected to the output member. This results in a synchronous movement of the drive part to the output part.
- the second ring gear While the second ring gear is mounted in the housing, rotation of the first ring gear is prevented by the self-locking of an outside of the ring gear acting actuator.
- a phase shift takes place by an active rotation on the first ring gear, whereby the rotation of the planet carrier is either accelerated or reduced.
- phase adjuster use for transmission of motion gear with gears is required.
- a world-wide backlash is required to set accurate angular displacements.
- phase shifting device having the features of the main claim.
- a first traction means which engages in an internal toothing of the first ring gear and an outer toothing of the first sun gear
- a second traction means which engages in an internal toothing of the second ring gear and an outer toothing of the second sun gear
- a common biasing element is created a highly translating three-shaft gear, which has no imbalance and works largely free of play. In this case, relatively inexpensive components can be used.
- the first ring gear is at least rotationally fixedly connected to the drive part.
- the second ring gear is at least rotatably connected to the output member and the two sun gears are at least rotatably connected to each other.
- the hardest accessible parts inside the transmission are one piece too; mount, while an accessibility from the outside to the output part is present.
- the actuator for phase adjustment is rotatably connected to the biasing member and drives it to.
- the adjustment thus takes place via the rotationally fixed connection of the actuator with the biasing element. Accordingly, in phases without adjustment, a synchronization of the actuator to the drive part.
- a very sensitive Versteil Anlagenkeit is created because a high number of additional revolutions of the actuator with the right choice of gear sizes are required to produce low relative rotational angle changes between drive part and driven part.
- the drive member is a drive wheel with external teeth, which is driven by a chain, a belt or a spur gear from a crankshaft of an internal combustion engine.
- This coupling has proven itself for use in internal combustion engines. The result is a reliable and durable motion transmission.
- the drive wheel is made in one piece with the first ring gear, thereby eliminating additional assembly steps for connection.
- the movement is thereby directly via the second ring gear to a camshaft serving as a driven part of a valve train of a Transfer internal combustion engine, so that account also here additional components for transmission of motion.
- the difference of the quotient of the number of teeth of the first ring gear and the number of teeth of the first sun gear and the quotient of the number of teeth of the second ring gear and the number of teeth of the second sun gear is at least 0.1% and a maximum of 2%.
- a desired gear ratio of over 100 is easily achieved in that the number of teeth of the first sun gear is greater or smaller than the number of teeth of the second sun gear and the number of teeth of the first ring gear is greater or smaller than the number of teeth of the second ring gear.
- the biasing element comprises two legs with a paragraph which reduces the distance between the legs and over which traction means are loaded in the direction of the internal toothing of the ring gears.
- a tension of both traction means is achieved by only one common biasing element.
- the actuator is an electric motor that rotates in phases without phase shift at the same speed as the drive part and the output part.
- the traction means are chains or toothed belts and the
- Preload elements designed as chain tensioners or belt tensioners, These are simply constructed traction means and clamping elements.
- Figure 1 shows a side view of a transmission of a device according to the invention for phase shift in a schematic representation.
- Figure 2 shows a top view of the gears used in a schematic representation, with some parts are shown transparent for clarity.
- the device according to the invention for phase shifting the angle of rotation of a drive part to a driven part consists of the driving part designed as a drive wheel 10 and the camshaft 12 formed as a driven part.
- the drive wheel 10 is formed as a sprocket and in one piece with a first ring gear 14, in whose Internal toothing 16 as the first traction means a first chain 18 engages.
- This chain 18 in turn engages in an external toothing 20 of a first sun gear 22, which is rotatably mounted.
- the chain 18 is held in engagement with 5 of the internal teeth 16 of the ring gear 14 and the external teeth 20 of the sun gear 22 via a chain tensioner 24 serving as a biasing element.
- the chain tensioner 24 has two radially opposite legs 26, 28, which have an outer distance to the axis of rotation, which substantially corresponds to the inner radius of the ring gear 14 reduced by the thickness of the links 30 of the chain 18 lo.
- the movement of this first gear 32 is transmitted to a second gear 15 34 by the first sun gear 22 is fixed with a second sun gear 36 on a common, rotatable about a rotation axis sun gear carrier 38.
- a second traction means in the form of a second chain 42, via which the movement is transmitted to a second ring gear 440, which has an internal toothing 46, in which the chain 42 engages.
- the Hohirad 44 is connected via a ring gear 48 fixed to the camshaft 12 serving as the output part.
- the chain tensioner 24 on its two legs 26, 28 each have a shoulder 50, 52, from which extend the legs 26, 28 of reduced diameter of the first gear 32 in the second gear 34.
- the distance of these extensions 54, 56 to the axis of rotation in turn substantially corresponds the inner radius of the second ring gear 44 is reduced by the thickness of the links 30 of the chain 42.
- the chain tensioner 24 runs in phases without rotational angle adjustment with the rotational speed of the drive wheel 10.
- the drive is realized by acting as an actuator 58 electric motor, which is driven accordingly and is fixedly connected via a drive shaft 60 to the chain tensioner 24.
- both gear 32, 34 and the chain tensioner 24, as well as the camshaft 12 and the drive wheel 10 at the same speed as a whole package.
- the entire device has a common axis of rotation without imbalances. Due to the high gear ratios to be achieved, the desired rotational angular displacements can be carried out very sensitively with little necessary driving forces. This is achieved not least by the fact that these traction mechanism are almost free of play.
- the device according to the invention is extremely robust and easy to assemble. In addition, inexpensive items can be used.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102012107678.2A DE102012107678B4 (de) | 2012-08-21 | 2012-08-21 | Vorrichtung zur Phasenverschiebung des Drehwinkels eines Antriebsteils zu einem Abtriebsteil |
| PCT/EP2013/062689 WO2014029524A1 (de) | 2012-08-21 | 2013-06-19 | Vorrichtung zur phasenverschiebung des drehwinkels eines antriebsteils zu einem abtriebsteil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2888457A1 true EP2888457A1 (de) | 2015-07-01 |
Family
ID=48670534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP13730538.9A Withdrawn EP2888457A1 (de) | 2012-08-21 | 2013-06-19 | Vorrichtung zur phasenverschiebung des drehwinkels eines antriebsteils zu einem abtriebsteil |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2888457A1 (de) |
| DE (1) | DE102012107678B4 (de) |
| WO (1) | WO2014029524A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013106930B3 (de) * | 2013-07-02 | 2014-06-26 | Pierburg Gmbh | Zugmittelgetriebe sowie Nockenwellensteller mit derartigem Zugmittelgetriebe |
| DE102014115316B3 (de) * | 2014-10-21 | 2016-03-17 | Pierburg Gmbh | Vorrichtung zur Phasenverschiebung des Drehwinkels eines Antriebsteils zu einem Abtriebsteil |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7337206U (de) | 1974-10-17 | Weingarten Ag | Vorrichtung zum Verstellen der Phasenlage eines umlaufenden Steuerorgans gegenüber seiner Antriebswelle | |
| US1877338A (en) * | 1929-10-23 | 1932-09-13 | Diamond Chain And Mfg Company | Chain drive |
| DE1750279A1 (de) * | 1968-04-18 | 1971-03-25 | Elektronische Rechenmasch Ind | UEbersetzungsgetriebe |
| DE3427699A1 (de) * | 1984-07-27 | 1986-02-06 | Otto Ing.(grad.) 2000 Norderstedt Nast | Planetengetriebe mit auf fuehrungssegmenten laufenden rollenketten anstatt rotierender planetenraeder |
| GB8910105D0 (en) * | 1989-05-03 | 1989-06-21 | Jaguar Cars | Camshaft drive mechanisms |
| DE4022735A1 (de) * | 1989-07-18 | 1991-01-24 | Candy Mfg Co | Spielfreie phaseneinstellvorrichtung |
| US5417186A (en) * | 1993-06-28 | 1995-05-23 | Clemson University | Dual-acting apparatus for variable valve timing and the like |
| AT409030B (de) * | 2000-03-09 | 2002-05-27 | Tcg Unitech Ag | Vorrichtung zur verstellung einer nockenwelle |
| DE10309738B4 (de) * | 2003-03-06 | 2006-02-16 | Avruckij, Efim | Wellengetriebe |
| DE102005018956A1 (de) * | 2005-04-23 | 2006-11-23 | Schaeffler Kg | Vorrichtung zur Nockenwellenverstellung einer Brennkraftmaschine |
| US8852048B2 (en) * | 2010-08-19 | 2014-10-07 | Ben Shelef | Planetary harmonic differential transmission |
-
2012
- 2012-08-21 DE DE102012107678.2A patent/DE102012107678B4/de not_active Expired - Fee Related
-
2013
- 2013-06-19 EP EP13730538.9A patent/EP2888457A1/de not_active Withdrawn
- 2013-06-19 WO PCT/EP2013/062689 patent/WO2014029524A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2014029524A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102012107678A1 (de) | 2014-03-20 |
| WO2014029524A1 (de) | 2014-02-27 |
| DE102012107678B4 (de) | 2020-03-19 |
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Legal Events
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