EP1511925A1 - Spannvorrichtung - Google Patents
SpannvorrichtungInfo
- Publication number
- EP1511925A1 EP1511925A1 EP03735398A EP03735398A EP1511925A1 EP 1511925 A1 EP1511925 A1 EP 1511925A1 EP 03735398 A EP03735398 A EP 03735398A EP 03735398 A EP03735398 A EP 03735398A EP 1511925 A1 EP1511925 A1 EP 1511925A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- actuator
- clamping device
- traction
- support body
- internal combustion
- 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- Withdrawn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
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H7/10—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley
- F16H7/12—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley
- F16H7/1254—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley without vibration damping means
- F16H7/1281—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley without vibration damping means where the axis of the pulley moves along a substantially circular path
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H2007/0802—Actuators for final output members
- F16H2007/0823—Electric actuators
Definitions
- the present invention relates to a tensioning device for a traction mechanism drive, with which various units, such as the water pump, the starter generator, the injection pump or an air conditioning compressor, are driven starting from the crankshaft of the internal combustion engine.
- the tensioning device comprises a support body which is arranged pivotably about an axis of rotation.
- a rotatable tensioning roller is positioned on the support body and is supported directly on the traction means, in particular a belt.
- the individual units of the internal combustion engine such as, for example, water pump, air conditioning compressor, starter generator, power steering pump, are driven starting from the crankshaft or its pulleys.
- the traction means in particular a belt, connects from the pulley of the crankshaft, all other pulleys including the traction mechanism drive of individual units.
- the tensioning device has the task of automatically ensuring the pretensioning of the traction device as constant as possible.
- Traction drive which also include the drive of a starter generator, require regardless of the operating mode of the internal combustion engine, i. H. An effective pre-tensioning force of the traction device both for the starting process and when the internal combustion engine is running.
- the starter generator which works as an electric motor, takes over the function of the traction drive.
- generator operation of the starter generator sets in, which supplies the electrical system of the motor vehicle with electrical energy.
- a torque is introduced into the traction means by the starter generator or the internal combustion engine. Consequently, between the operating mode there is a change of the empty run and the pull run or a change of the torque direction in the traction means run between the pulleys of the crankshaft and the starter generator.
- a traction mechanism drive is known from the patent JP 105 9555 A, which includes the drive of a starter generator.
- the known traction mechanism drive comprises two automatically acting tensioning devices.
- a first tensioning device is supported with a tensioning roller on the traction means strand between the pulleys of the crankshaft and the starter generator.
- the tensioning roller of the second tensioning device is supported on the traction means strand in a section downstream of the starter generator.
- the structure provides that the first tensioning device can be blocked in the start mode in order to achieve a pretensioned traction means between the starter generator and the pulley of the crankshaft.
- the double arrangement of the clamping devices requires an increased installation space, which is not available in particular in small-volume internal combustion engines. Furthermore, the double arrangement of clamping devices increases the costs and the installation effort and thus largely compensates for the savings effect of the starter generator, which combines the generator and starter units.
- the object of the invention is to always take into account the disadvantages of the known solution with only one tensioning device, regardless of the operating mode of the internal combustion engine, to ensure an optimal pre-tensioning force of the traction means.
- a tensioning device is provided according to the invention according to claim 1, which comprises a support body which is pivotable about an axis of rotation.
- a roller-mounted tensioning roller is positioned on the support body.
- the adjustment of the tensioning device in order to influence the pretensioning force of the traction device is carried out exclusively via an electronic actuator.
- the actuator is spaced from the axis of rotation of the clamping device, articulated on the supporting body and ensures an exact adjustment of the clamping device.
- a method is provided to solve the problem, in which a support body provided for receiving the tensioning roller takes place as a function of at least one operating parameter of the traction means and / or the internal combustion engine.
- a controllable actuator is preferably a linear actuator, which can also be referred to as an actuator.
- a preferred construction of the actuator comprises an electrically driven threaded spindle or alternatively a ball screw
- the invention further includes a hydraulically or pneumatically acting actuator.
- the tensioning device can be adjusted by means of an electro-magnetic or an electro-hydraulic actuator
- a further advantageous arrangement according to the invention comprises a joint or an intermediate element which is inserted between the actuator or the actuator and the supporting body of the tensioning device.
- This measure enables a power transmission or a relocated arrangement of the actuator from the tensioning device, which is suitable, for example, for narrow installation spaces of the traction mechanism drive.
- the construction of the tensioning device according to the invention can include a toggle lever which connects the actuator, in particular a threaded spindle to the supporting body of the tensioning device.
- a stop is preferably assigned to the toggle lever in order to achieve a defined end position.
- the toggle lever serves to relieve the electric motor the toggle lever is used for smaller sized internal combustion engines
- an electric motor is advantageously used, which carries out the adjustment of the tensioning device, i.e. the supporting body and the tensioning roller.
- the invention includes a force-dependent control or activation of the actuator or the actuator.
- a force measuring roller connected to the traction means is suitable
- a further embodiment of the invention provides that the control or activation of the actuator takes place as a function of at least one operating parameter of the traction mechanism drive.
- the electronically controlled actuator can According to the invention in connection with suitable control electronics of the internal combustion engine or a motor management, the tensioning device can be adjusted, for example, depending on the generator power, the pretensioning force of the traction means, the direction of action of the torque in the traction means or the speed of a pulley of the traction means drive, by the pretensioning force of the traction means to influence
- a largely constant pretension of the traction means can be achieved according to the invention in that a holding current or a restoring torque of the electric motor used for activating the actuator is continuously recorded and, depending on these operating parameters, the effective range of the electronically controlled actuator is changed
- the electronically controlled or electronically controllable actuator enables a constant pre-tensioning of the traction means, regardless of whether the traction means is elongated due to wear, for example.
- an optimum between the lowest wear and high power transmission between the traction means and the units to be driven can be achieved
- the traction element preload can be set continuously, for example between an operating position and a neutral position, with the electronically controlled actuator
- the electronically controlled actuator which is preferably connected to control electronics of the internal combustion engine, enables the tensioning device to be pivoted, for example, in the starting mode of the internal combustion engine, into a position that increases the pretensioning force of the traction means to avoid slippage of the crankshaft and thus start deceleration.
- the tensioning device according to the invention is therefore preferably arranged between the pulleys of the crankshaft and the starter generator.
- the electronically controlled actuator according to the invention further enables the support body and consequently the tensioning pulley connected to it to pivot automatically into a position corresponding to the starting position when the internal combustion engine is at a standstill.
- control electronics can be designed such that, in the starting phase, synchronously with the starting process of the internal combustion engine, the electronically controlled actuator pivots the supporting body and the tensioning roller connected therewith into the corresponding starting position.
- Figure 1 shows the schematic structure of a traction drive, provided with a tensioning device according to the invention
- Figure 2 shows an enlarged view of the invention
- FIG. 1 shows a traction mechanism drive 1, which is designed as a so-called unit drive and is provided for driving various units of an internal combustion engine.
- a traction means 2 preferably a belt or a toothed belt, connects the pulleys of the individual units.
- the traction mechanism drive 1 is driven by the crankshaft 3 or its pulley, the traction mechanism 2 enclosing the pulleys of the air conditioning compressor 4, the water pump 5, the power steering pump 6 and the starter generator 7.
- a clamping device 8a is assigned to the traction means 2 between the starter generator 7 and the crankshaft 3.
- the tensioning device 8a comprises a support body 9a, on which a tensioning roller 10 is rotatably arranged, which is supported directly on the traction means 2.
- the support body 9a can be pivoted about an axis of rotation 11, which is preferably on a crankcase of the internal combustion engine (not shown in FIG. 1)
- the tensioning device 8a is adjusted exclusively via an actuator 12a.
- an electronically controlled or electronically controllable actuator 12a which can also be referred to as an actuator, is provided.
- FIG. 1 shows a linearly acting actuator 12a provided with a Threaded spindle 13, which is driven by an electric motor 14.
- the adjusting nut 15, which can be displaced linearly on the threaded spindle 13, is connected to the supporting body 9a via an articulated intermediate member 16.
- a link 17 serves for this purpose, which is on the respective end sides of the supporting body 9a and Lock nut 15 is articulated
- a linear movement of the adjusting nut 15, indicated by the double arrow, causes the tensioning device 8a to pivot about the axis of rotation 11, as a result of which the pretensioning force of the traction means 2 is influenced
- the electric motor 14 is advantageously coupled to the motor controller 18, so that, for example, depending on the operating mode, ie between the starting phase and the running internal combustion engine, the pretensioning force of the traction means can be influenced.
- the adjustment of the actuator 12a can also be dependent on at least one parameter of the Traction drive 1 are influenced for this purpose, an electronic system 19 is provided, which interacts, for example, with a sensor 20 integrated in the starter generator 7 or assigned to the starter generator 7 Influencing the pre-tension of the traction device 2 as a function of predetermined limit values.
- the electronic system 19 can also be supplemented with additional sensors with which the traction device Force or the speed of a pulley can be monitored to always ensure an optimal preload of the traction device 2.
- a torque from the crankshaft 3 or the starter generator 7 is introduced into the traction means 2 via the associated pulleys. This is associated with a change in the empty run and the pull run or the torque direction in the traction means run between the starter generator 7 and the crankshaft 3.
- the tensioning device 8a is shifted via the actuator 12a into a position which increases the pretensioning force of the traction means 2 in order to achieve a delay-free start of the internal combustion engine, i. H.
- the starting position illustrates the position of the tensioning roller 10 shown in dotted lines.
- the actuator 12a is actuated in such a way that it displaces the tensioning device 8a into a position reducing the pretensioning force of the traction means 2.
- FIG. 2 shows details of the traction mechanism drive 1 on an enlarged scale.
- the tensioning device 8b shows a support body 9b, the axis of rotation 11 of which is arranged at a greater distance from the articulation point of the actuator 12b, in comparison to the tensioning device 8a according to FIG To change the pre-tensioning force of the traction device.
- the actuator 12b is arranged between the pulley of the crankshaft 3 and the starter generator 7 in an optimized space.
- the adjusting nut 15 of the actuator 12b also forms a joint 21 directly with the support body 9b.
- the formation and arrangement of the actuator 12b is particularly suitable for small-volume internal combustion engines in which the available space is limited. reference numerals
- Starter generator a tensioning device b tensioning device a supporting body b supporting body 0 tensioning roller 1 axis of rotation 2a actuator 2b actuator 3 threaded spindle 4 electric motor 5 adjusting nut 6 intermediate link 7 bracket 8 motor control 9 electronic system 0 sensor 1 joint
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2002125268 DE10225268A1 (de) | 2002-06-07 | 2002-06-07 | Spannvorrichtung |
DE10225268 | 2002-06-07 | ||
PCT/EP2003/005138 WO2003104628A1 (de) | 2002-06-07 | 2003-05-16 | Spannvorrichtung |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1511925A1 true EP1511925A1 (de) | 2005-03-09 |
Family
ID=29557620
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03735398A Withdrawn EP1511925A1 (de) | 2002-06-07 | 2003-05-16 | Spannvorrichtung |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1511925A1 (de) |
AU (1) | AU2003236661A1 (de) |
DE (1) | DE10225268A1 (de) |
WO (1) | WO2003104628A1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2519809A (en) * | 2013-10-31 | 2015-05-06 | Gm Global Tech Operations Inc | Variable belt tensioner for an internal combustion engine |
US9447850B2 (en) | 2012-04-28 | 2016-09-20 | Litens Automotive Partnership | Adjustable tensioner |
US9464697B2 (en) | 2011-09-05 | 2016-10-11 | Litens Automotive Partnership | Intelligent belt drive system and method |
US9989129B2 (en) | 2011-05-13 | 2018-06-05 | Litens Automotive Partnership | Intelligent belt drive system and method |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10322540A1 (de) * | 2003-05-19 | 2004-12-23 | Siemens Ag | Riementrieb in dem Antriebsstrang eines Kraftfahrzeugs und Verfahren zum Steuern eines solchen Riementriebs |
DE10337586A1 (de) * | 2003-08-16 | 2005-03-10 | Ina Schaeffler Kg | Spannvorrichtung |
DE10344670A1 (de) * | 2003-09-25 | 2005-04-14 | Ina-Schaeffler Kg | Vorrichtung zur schwenkbaren Lagerung eines Antriebsorgans |
JP5138228B2 (ja) | 2003-12-24 | 2013-02-06 | バレット テクノロジー インコーポレイテッド | 引張要素駆動装置のための自動プレテンション機構 |
FR2865583B1 (fr) * | 2004-01-23 | 2006-03-31 | Peugeot Citroen Automobiles Sa | Dispositif de solidarisation d'une machine tournante sur un moteur de vehicule. |
JP2005220945A (ja) * | 2004-02-03 | 2005-08-18 | Mitsubishi Fuso Truck & Bus Corp | エンジンのベルト張力調整装置 |
DE102004037262A1 (de) * | 2004-07-31 | 2006-02-16 | Ina-Schaeffler Kg | Zugmitteltrieb |
DE102005001800A1 (de) * | 2005-01-14 | 2006-08-17 | Schaeffler Kg | Positionierung einer Umlenkrolle bei Zugmitteltrieb mit riemengetriebenem Startergenerator |
FR2885979A1 (fr) * | 2005-05-20 | 2006-11-24 | Renault Sas | Dispositif de pilotage de la tension d'une courroie de demarreur et demarreur a courroie incorporant un tel dispositif |
DE102007055547A1 (de) | 2007-11-21 | 2009-05-28 | Schaeffler Kg | Riemenspannvorrichtung |
DE102009045880A1 (de) * | 2009-10-21 | 2011-11-17 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Betreiben eines Riementriebs eines Kraftfahrzeugs |
DE102010044864A1 (de) * | 2010-09-09 | 2012-03-15 | Gm Global Technology Operations Llc (N.D.Ges.D. Staates Delaware) | Steuerung einer variierbaren Spanneinrichtung für einen Keilrippenriemen eines Kraftfahrzeugantriebs |
US9151366B2 (en) | 2010-09-10 | 2015-10-06 | Litens Automotive Partnership | Intelligent belt drive system and method |
DE102012019038A1 (de) * | 2012-09-27 | 2014-03-27 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Generator zur Erzeugung von elektrischem Strom in einem Kraftfahrzeug und Kraftfahrzeug |
DE102012218455B4 (de) * | 2012-10-10 | 2024-05-29 | Bayerische Motoren Werke Aktiengesellschaft | Riementrieb mit variabler Vorspannkraft |
CN106763586A (zh) * | 2016-12-12 | 2017-05-31 | 江阴职业技术学院 | 发动机附件轮系涨紧自调整装置 |
DE102017214067A1 (de) | 2017-08-11 | 2019-02-14 | Volkswagen Aktiengesellschaft | Verfahren und Steuergerät zum Betreiben eines Riementriebs und Vorrichtung zum Bestimmen einer Riemenvorspannung |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4478595A (en) * | 1981-03-27 | 1984-10-23 | Nippondenso Co., Ltd. | Electric control apparatus for belt tensioners |
JPH08326854A (ja) * | 1995-05-30 | 1996-12-10 | Honda Motor Co Ltd | 内燃機関における無端伝動帯の張力調整装置 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4114716C2 (de) * | 1991-05-06 | 1996-11-28 | Ebern Fahrzeugtech Gmbh | Verfahren und Vorrichtung zum Regeln der Riemenspannung eines Riementriebs, vorzugsweise für Verbrennungskraftmaschinen von Kraftfahrzeugen |
US5752891A (en) * | 1995-03-20 | 1998-05-19 | Ford Global Technologies, Inc. | Electronically controlled accessory drive system for the automotive engine |
JP3652177B2 (ja) * | 1999-08-20 | 2005-05-25 | 株式会社デンソー | 内燃機関用ベルト伝動システム |
DE10000970A1 (de) * | 2000-01-12 | 2001-09-06 | Litens Automotive Gmbh | Spannvorrichtung für ein biegsames Antriebselement |
DE10044125A1 (de) * | 2000-09-06 | 2002-03-14 | Schaeffler Waelzlager Ohg | Mechanische Riemenspanneinheit mit hydraulischer Unterstützung |
PL366008A1 (en) * | 2000-10-03 | 2005-01-24 | The Gates Corporation | Accessory drive system including a motor/generator |
AU2001296468A1 (en) * | 2000-10-03 | 2002-04-15 | The Gates Corporation | Motor/generator and accessory belt drive system |
JP2002138847A (ja) * | 2000-10-31 | 2002-05-17 | Mitsubishi Electric Corp | ベルト伝動装置 |
DE10118277A1 (de) * | 2001-04-12 | 2002-10-17 | Bayerische Motoren Werke Ag | Vorrichtung zum Spannen eines Antriebsriemens an einer Brennkraftmaschine |
-
2002
- 2002-06-07 DE DE2002125268 patent/DE10225268A1/de not_active Ceased
-
2003
- 2003-05-16 EP EP03735398A patent/EP1511925A1/de not_active Withdrawn
- 2003-05-16 WO PCT/EP2003/005138 patent/WO2003104628A1/de not_active Application Discontinuation
- 2003-05-16 AU AU2003236661A patent/AU2003236661A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4478595A (en) * | 1981-03-27 | 1984-10-23 | Nippondenso Co., Ltd. | Electric control apparatus for belt tensioners |
JPH08326854A (ja) * | 1995-05-30 | 1996-12-10 | Honda Motor Co Ltd | 内燃機関における無端伝動帯の張力調整装置 |
Non-Patent Citations (1)
Title |
---|
See also references of WO03104628A1 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9989129B2 (en) | 2011-05-13 | 2018-06-05 | Litens Automotive Partnership | Intelligent belt drive system and method |
US9464697B2 (en) | 2011-09-05 | 2016-10-11 | Litens Automotive Partnership | Intelligent belt drive system and method |
US9447850B2 (en) | 2012-04-28 | 2016-09-20 | Litens Automotive Partnership | Adjustable tensioner |
GB2519809A (en) * | 2013-10-31 | 2015-05-06 | Gm Global Tech Operations Inc | Variable belt tensioner for an internal combustion engine |
Also Published As
Publication number | Publication date |
---|---|
DE10225268A1 (de) | 2003-12-18 |
AU2003236661A1 (en) | 2003-12-22 |
WO2003104628A1 (de) | 2003-12-18 |
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Inventor name: MAAS, GERHARD Inventor name: BERGER, RUDOLF Inventor name: KRAFT, THOMAS Inventor name: BOGNER, MICHAEL Inventor name: HIMSEL, FRANK Inventor name: GRAU, ULRICH |
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Designated state(s): CZ DE FR GB SE |
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Owner name: SCHAEFFLER KG |
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