DE3205017A1 - Power take-off - Google Patents

Power take-off

Info

Publication number
DE3205017A1
DE3205017A1 DE19823205017 DE3205017A DE3205017A1 DE 3205017 A1 DE3205017 A1 DE 3205017A1 DE 19823205017 DE19823205017 DE 19823205017 DE 3205017 A DE3205017 A DE 3205017A DE 3205017 A1 DE3205017 A1 DE 3205017A1
Authority
DE
Germany
Prior art keywords
power take
internal combustion
speed
combustion engine
drive
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.)
Ceased
Application number
DE19823205017
Other languages
German (de)
Inventor
Berthold Dr. 4630 Bochum Utsch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DE19823205017 priority Critical patent/DE3205017A1/en
Publication of DE3205017A1 publication Critical patent/DE3205017A1/en
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K25/00—Auxiliary drives
    • B60K25/02—Auxiliary drives directly from an engine shaft
    • 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
    • F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
    • F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus
    • F02B67/06—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus driven by means of chains, belts, or like endless members
    • 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
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/32—Friction members
    • F16H55/52—Pulleys or friction discs of adjustable construction
    • F16H55/56—Pulleys or friction discs of adjustable construction of which the bearing parts are relatively axially adjustable
    • F16H55/563—Pulleys or friction discs of adjustable construction of which the bearing parts are relatively axially adjustable actuated by centrifugal masses
    • 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
    • F16H9/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members
    • F16H9/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion
    • F16H9/04—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes
    • F16H9/12—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members
    • F16H9/16—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members using two pulleys, both built-up out of adjustable conical parts
    • F16H9/18—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members using two pulleys, both built-up out of adjustable conical parts only one flange of each pulley being adjustable

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Transmissions By Endless Flexible Members (AREA)

Abstract

On an internal combustion engine (10), preferably in motor vehicles, a power take-off is arranged for driving units (18) such as generators, fans or the like. Between internal combustion engine (10) and unit (18) there is at the same time a transmission (15) which can be set by way of a speed governor (19) to constant output speed for the unit (18), preferably a stepless belt transmission. In this way it is possible to drive the units at constant speed with varying engine speeds. <IMAGE>

Description

NebenantriebPower take-off

Stand der Technik Die Erfindung geht aus von einem Nebenantrieb nach der Gattung des Hauptanspruches. Es ist bekannt, in Brennkraftmaschinen, beispielsweise in Kraftfahrzeugen, die Brennkraftmaschine auch zum Antrieb von Aggregaten wie der Lichtmaschine, es Gebläses, von Kühlaggregaten und dgl. einzusetzen. Insbesondere in Kraftfahrzeugen ergibt sich dabei das Problem, daß die Brennkraftmaschine mit stark variierenden Drehzahlen betrieben wird, so daß auch die Aggregate diesen unterschiedlichen Antriebsdrehzahlen ausgesetzt sind. Hierdurch ist es bei vielen Aggregaten erforderlich, gesonderte Regelungen vorzusehen, um den Einfluß der sich stark ändernden Antriebsdrehzahl auszugleichen.PRIOR ART The invention is based on a power take-off the genre of the main claim. It is known in internal combustion engines, for example In motor vehicles, the internal combustion engine is also used to drive units such as the Alternator, blower, cooling units and the like. Use. In particular In motor vehicles, the problem arises that the internal combustion engine with widely varying speeds is operated, so that the units also these different Drive speeds are exposed. This means that with many units it is necessary Provide separate controls to reduce the influence of the strongly changing drive speed balance.

Vorteile der Erfindung Der erfindungsgemäße Nebenantrieb mit den kennzeichnenden Merkmalen des Hauptanspruches hat demgegenüber den Vorteil, daß die angetriebenen Aggregate einer konstanten Antriebsdrehzahl ausgesetzt sind. Hierdurch ergeben sich Vereinfachungen beim Entwurf und Betrieb des Nebenaggregates. So ist es bei Lichtmaschinen in Kraftfahrzeugen beispielsweise auf diese Weise möglich, statt herkömmlicher Lichtmaschinen permanentmagnetisch erregte Generatoren zu verwenden, so daß sich gleichzeitig eine Erhöhung des Wirkungsgrades und eine Gewichtseinsparung bei Lichtmaschine und Batterie ergibt.Advantages of the invention The power take-off according to the invention with the characterizing Features of the main claim has the advantage that the driven Units are exposed to a constant drive speed. This results in Simplifications in the design and operation of the auxiliary unit. It is the same with alternators This is possible in motor vehicles, for example, instead of conventional alternators to use permanent magnetically excited generators, so that at the same time a Increased efficiency and weight savings in the alternator and battery results.

Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen des im Hauptanspruch angegebenen Nebenantriebs möglich.The measures listed in the subclaims are advantageous Further developments of the power take-off specified in the main claim are possible.

So ist eine besonders feinfühlige Regelung einer konstanten Nebenantriebsdrehzahl dadurch möglich, daß zwischen Brennkraftmaschine und Aggregat ein stufenloses Riemengetriebe geschaltet wird, bei dem sich das Übersetzungsverhältnis durch Variation des Abstandes der Riemenhalbscheiben ergibt. Eine besonders einfache Regelung ergibt sich in diesem Fall durch Fliehkraftverstellung des Abstandes der antriebsseitigen Riemenscheibe.This is a particularly sensitive control of a constant power take-off speed made possible by a continuously variable belt transmission between the internal combustion engine and the unit is switched, in which the transmission ratio changes by varying the distance of the belt half pulleys. A particularly simple regulation results in this Fall due to centrifugal adjustment of the distance between the drive-side pulley.

Weitere Vorteile ergeben sich aus der Beschreibung und der beigefügten Zeichnung.Further advantages emerge from the description and the attached Drawing.

Zeichnung Die Erfindung ist in der Erfindung dargestellt und wird in der nachfolgenden Beschreibung näher erläutert. Es zeigen: Figur 1 ein Blockschaltbild einer Ausführungsform eines erfindungsgemäßen Nebenantriebes; Figur 2 ein Ausführungsbeispiel eines erfindungsgemäßen Drehzahlreglers.DRAWING The invention is and is illustrated in the invention explained in more detail in the following description. They show: FIG. 1 a block diagram one embodiment a power take-off according to the invention; figure 2 an embodiment of a speed controller according to the invention.

Beschreibung des Ausführungsbeispiels In Figur 1 ist mit 10 eine Brennkraftmaschine eines Kraftfahrzeuges bezeichnet, die über eine Antriebswelle 11 und ein übliches Getriebe 12 mit dem Abtrieb 13 verbunden ist.DESCRIPTION OF THE EXEMPLARY EMBODIMENT In FIG. 1, 10 is an internal combustion engine of a motor vehicle, which has a drive shaft 11 and a conventional Transmission 12 is connected to output 13.

Darüber hinaus verfügt die Brennkraftmaschine 10 über eine Nebenabtriebswelle 14, die auf ein stufenloses Getriebe 15 führt. Das Getriebe 15 ist im Ausführungsbeispiel gemäß Figur 1 als stufenloses Keilriemengetriebe ausgebildet, das über eine antriebsseitige Keilriemenscheibe 16 und eine abtriebsseitige Keilriemenscheibe 17 verfügt. Die Scheibe 17 ist mit einem Aggregat 18 verbunden, vorzugsweise an der Scheibe 16 befindet sich ein Drehzahlregler 19.In addition, the internal combustion engine 10 has a power take-off shaft 14, which leads to a continuously variable transmission 15. The transmission 15 is in the exemplary embodiment designed according to Figure 1 as a continuously variable V-belt transmission, which has a drive-side V-belt pulley 16 and an output-side V-belt pulley 17 has. the Disk 17 is connected to an assembly 18, preferably located on disk 16 a speed controller 19.

Im normalen Betrieb des Kraftfahrzeuges wird die Brennkraftmaschine 10 mit stark variierender Drehzahl betrieben. Um dennoch das Aggregat 18, beispielsweise eine Lichtmachine, ein Gebläse, eine Klimaanlage oder dgl. mit konstanter Antriebsdrehzahl betreiben zu können, ist das stufenlose Getriebe 15 vorgesehen. Bekanntlich ergibt sich bei dem im Ausführungsbeispiel gemäß Figur 1 verwendeten stufenlosen Riemengetriebe die Veränderung des Übersetzungsverhältnisses dadurch, daß der Abstand der antriebs- und/oder abtriebsseitigen Keilriemenhalbscheiben verändert wird, so daß sich aufgrund der konstanten Länge des Riemens unterschiedliche Übersetzungsverhältnisse ergeben. Besonders zweckmäßig ist es, an der antriebsseitigen Keilriemenscheibe 16 den Drehzahlregler 19 vorzusehen, wie er in einem Ausführungsbeispiel in Figur 2 dargestellt ist.During normal operation of the motor vehicle, the internal combustion engine 10 operated with widely varying speed. To still the unit 18, for example a generator, a blower, an air conditioning system or the like. With a constant drive speed To be able to operate, the continuously variable transmission 15 is provided. As is well known, results in the case of the continuously variable belt transmission used in the exemplary embodiment according to FIG the change in the gear ratio by the fact that the distance between the drive and / or driven side V-belt half pulleys is changed so that due to the constant length of the belt result in different transmission ratios. It is particularly useful to have the speed controller on the drive-side V-belt pulley 16 19, as shown in an exemplary embodiment in FIG.

Der Regler 19 verfügt dabei über zwei Fliehkraftgewichte 20, 21, die mit der Drehzahl der Brennkraftmaschine 10 umlaufen. Durch die Anordnung des Schwerpunktes der Fliehkraftgewichte 20, 21 sowie ihre Befestigung an der Scheibe 16 bzw. einem nicht dargestellten Gehäuse wird erreicht, daß der Abstand der Halbscheiben der Keilriemenscheibe 16 sich mit zunehmender Drehzahl der Brennkraftmaschine 10 vergrößert. Hierdurch vermindert sich der wirksame Radius der Scheibe 16. Vorzugsweise vergrößert sich gleichzeitig gegensinnig der Abstand der Halbscheiben 17, so daß sich am Aggregat 18 eine konstante Drehzahl einstellt.The controller 19 has two centrifugal weights 20, 21, the rotate at the speed of the internal combustion engine 10. By the arrangement of the center of gravity the centrifugal weights 20, 21 and their attachment to the disc 16 or a Housing, not shown, is achieved that the distance between the half-disks of V-belt pulley 16 increases as the speed of internal combustion engine 10 increases. This reduces the effective radius of the disk 16. Preferably, it increases it at the same time in opposite directions the distance between the half-disks 17, so that on the unit 18 sets a constant speed.

Es versteht sich dabei, daß auch beliebige andere Getriebe 15 Verwendung finden können. Außerdem ist die Anwendung der Erfindung keineswegs auf den Einsatz in Kraftfahrzeugen beschränkt; sie ist vielmehr überall dort einsetzbar, wo Antriebsmaschinen der verschiedensten Art mit sich ändernden Drehzahlen verwendet werden und weitere Aggregate über einen Nebenabtrieb zweckmäßigerweise mit konstanter Drehzahl angetrieben werden, wie dies beispielsweise auch bei landwirtschaftlichen Maschinen der Fall ist.It goes without saying that any other transmission 15 can also be used can find. In addition, the application of the invention is by no means to use restricted in motor vehicles; Rather, it can be used wherever prime movers of various kinds with changing speeds are used and others Units driven by a power take-off expediently at constant speed as is the case, for example, with agricultural machines is.

LeerseiteBlank page

Claims (3)

Ansprüche Nebenantrieb an einer Kraftmaschine (10), vorzugsweise in Kraftfahrzeugen zum Antrieb von Aggregaten wie Lichtmaschine, Gebläse und dgl., dadurch gekennzeichnet, daß zwischen Brennkraftmaschine (10) und Aggregat (18) ein Getriebe (15) angeordnet ist, das über einen Drehzahlregler (19) auf konstante Ausgangsdrehzahl für das Aggregat (18) einstellbar ist. Claims power take-off on an engine (10), preferably in motor vehicles to drive units such as alternators, fans and the like, characterized in that between the internal combustion engine (10) and unit (18) a Gear (15) is arranged, which via a speed controller (19) to constant output speed for the unit (18) is adjustable. 2. Nebenantrieb nach Anspruch 1, dadurch gekennzeichnet, daß das Getriebe (15) ein stufenloses Riemen-oder Kettengetriebe ist. 2. Power take-off according to claim 1, characterized in that the Gear (15) is a continuously variable belt or chain gear. 3. Nebenantrieb nach Anspruch 2, dadurch gekennzeichnet, daß der Abstand der antriebsseitigen Riemenhalbscheiben (16) mit zunehmender Drehzahl der Brennkraftmaschine (10) vergrößerbar ist, vorzugsweise über einen Fliehkraftregler bei gleichzeitiger Abstandsänderung der abtriebsseitigen Riemenhalbscheiben. 3. Power take-off according to claim 2, characterized in that the Distance between the drive-side belt half pulleys (16) with increasing speed of the Internal combustion engine (10) can be enlarged, preferably via a centrifugal governor with a simultaneous change in the distance between the belt half pulleys on the output side.
DE19823205017 1982-02-12 1982-02-12 Power take-off Ceased DE3205017A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19823205017 DE3205017A1 (en) 1982-02-12 1982-02-12 Power take-off

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Application Number Priority Date Filing Date Title
DE19823205017 DE3205017A1 (en) 1982-02-12 1982-02-12 Power take-off

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DE3205017A1 true DE3205017A1 (en) 1983-08-25

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0427303A1 (en) * 1989-11-08 1991-05-15 Van Doorne's Transmissie B.V. Driving system for auxiliary equipment
EP0590808A1 (en) * 1992-09-28 1994-04-06 Fujikura Ltd. Fluid clutch device
EP0788918A3 (en) * 1996-02-12 1999-01-13 Echlin Inc. Engine power system with controlled power transfer
WO2000008323A2 (en) * 1998-07-31 2000-02-17 Robert Bosch Gmbh Continuous-variation transmission for vehicles
NL1023319C2 (en) * 2003-05-01 2004-11-03 Govers Henricus Johannes Anton Road vehicle with auxiliary device.
EP1790518A3 (en) * 2005-11-25 2009-12-30 Power Hybrid Deutschland GmbH Adaptation kit for saving fuel in motor vehicles
DE102008052728A1 (en) 2008-10-22 2010-04-29 Schaeffler Kg Auxiliary drive system for internal combustion engine of e.g. lorry, has centrifugal force-operated speed controller engaged at cone disk and displaceably moved according to type of shear and depending upon centrifugal force of disk
DE102008061882A1 (en) 2008-12-11 2010-06-17 Schaeffler Kg Internal combustion engine with an accessory drive
DE102008061884A1 (en) 2008-12-11 2010-06-17 Schaeffler Kg Internal-combustion engine for motor vehicle, has stepless transmission comprising adjusting element provided for adjusting radial position of eccentric component relative to drive shaft
DE102008061886A1 (en) 2008-12-11 2010-06-17 Schaeffler Kg Internal combustion engine for motor vehicle, has accessory drive, which is operated on auxiliary unit, and is connected to crankshaft, where multiple handle elements are connected to eccentric component
DE102008061885A1 (en) 2008-12-11 2010-06-17 Schaeffler Kg Internal combustion engine for motor vehicle, has accessory drive, which is operated on auxiliary unit and is connected to crankshaft, where multiple handle elements are connected to eccentric component in articulated manner
DE102008061883A1 (en) 2008-12-11 2010-06-17 Schaeffler Kg Internal-combustion engine for motor vehicle, has wheel staying in operative connection with pinion, and stepless transmission including adjusting unit for adjusting radial position of eccentric component with respect to drive shaft
DE102009024045A1 (en) 2009-06-05 2010-12-09 Schaeffler Technologies Gmbh & Co. Kg Stepless gear mechanism, for the drive take-off from an internal combustion motor drive shaft to an auxiliary unit, has a crank with variable geometry to equalize drive shaft rotation
DE102009056613A1 (en) 2009-12-02 2011-06-09 Schaeffler Technologies Gmbh & Co. Kg Drive train for motor vehicles, comprises three-dimensional cam, which is rotating on drive shaft and axial connection is arranged, where three-dimensional cam is in connection with crank elements
DE102012019047A1 (en) 2012-09-27 2014-03-27 Daimler Ag Auxiliary unit drive for combustion engine of motor car, has auxiliary unit driven by belt drive of prime mover of motor car, pulley divided into two circle segments, and axial displaceable rolling bearing provided with recording element

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2626329B2 (en) * 1975-06-11 1981-01-22 Borg-Warner Corp., Chicago, Ill. (V.St.A.) Conical pulley belt drive with stepless automatic transmission adjustment

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2626329B2 (en) * 1975-06-11 1981-01-22 Borg-Warner Corp., Chicago, Ill. (V.St.A.) Conical pulley belt drive with stepless automatic transmission adjustment

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0427303A1 (en) * 1989-11-08 1991-05-15 Van Doorne's Transmissie B.V. Driving system for auxiliary equipment
US5469947A (en) * 1992-09-20 1995-11-28 Fujikura Ltd. Fluid clutch device
EP0590808A1 (en) * 1992-09-28 1994-04-06 Fujikura Ltd. Fluid clutch device
EP0788918A3 (en) * 1996-02-12 1999-01-13 Echlin Inc. Engine power system with controlled power transfer
WO2000008323A2 (en) * 1998-07-31 2000-02-17 Robert Bosch Gmbh Continuous-variation transmission for vehicles
WO2000008323A3 (en) * 1998-07-31 2000-05-25 Bosch Gmbh Robert Continuous-variation transmission for vehicles
NL1023319C2 (en) * 2003-05-01 2004-11-03 Govers Henricus Johannes Anton Road vehicle with auxiliary device.
WO2004097264A1 (en) * 2003-05-01 2004-11-11 GOVERS, Henricus, Johannes, Antonius, Alphonsus Road vehicle with auxiliary installation
EP1790518A3 (en) * 2005-11-25 2009-12-30 Power Hybrid Deutschland GmbH Adaptation kit for saving fuel in motor vehicles
DE102008052728A1 (en) 2008-10-22 2010-04-29 Schaeffler Kg Auxiliary drive system for internal combustion engine of e.g. lorry, has centrifugal force-operated speed controller engaged at cone disk and displaceably moved according to type of shear and depending upon centrifugal force of disk
DE102008061882A1 (en) 2008-12-11 2010-06-17 Schaeffler Kg Internal combustion engine with an accessory drive
DE102008061884A1 (en) 2008-12-11 2010-06-17 Schaeffler Kg Internal-combustion engine for motor vehicle, has stepless transmission comprising adjusting element provided for adjusting radial position of eccentric component relative to drive shaft
DE102008061886A1 (en) 2008-12-11 2010-06-17 Schaeffler Kg Internal combustion engine for motor vehicle, has accessory drive, which is operated on auxiliary unit, and is connected to crankshaft, where multiple handle elements are connected to eccentric component
DE102008061885A1 (en) 2008-12-11 2010-06-17 Schaeffler Kg Internal combustion engine for motor vehicle, has accessory drive, which is operated on auxiliary unit and is connected to crankshaft, where multiple handle elements are connected to eccentric component in articulated manner
DE102008061883A1 (en) 2008-12-11 2010-06-17 Schaeffler Kg Internal-combustion engine for motor vehicle, has wheel staying in operative connection with pinion, and stepless transmission including adjusting unit for adjusting radial position of eccentric component with respect to drive shaft
WO2010066520A1 (en) * 2008-12-11 2010-06-17 Schaeffler Technologies Gmbh & Co. Kg Internal combustion engine having a secondary auxiliaries drive
DE102009024045A1 (en) 2009-06-05 2010-12-09 Schaeffler Technologies Gmbh & Co. Kg Stepless gear mechanism, for the drive take-off from an internal combustion motor drive shaft to an auxiliary unit, has a crank with variable geometry to equalize drive shaft rotation
DE102009056613A1 (en) 2009-12-02 2011-06-09 Schaeffler Technologies Gmbh & Co. Kg Drive train for motor vehicles, comprises three-dimensional cam, which is rotating on drive shaft and axial connection is arranged, where three-dimensional cam is in connection with crank elements
DE102012019047A1 (en) 2012-09-27 2014-03-27 Daimler Ag Auxiliary unit drive for combustion engine of motor car, has auxiliary unit driven by belt drive of prime mover of motor car, pulley divided into two circle segments, and axial displaceable rolling bearing provided with recording element

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