EP1454043A1 - Mecanisme de transmission variable par courroie destine a des groupes auxiliaires - Google Patents

Mecanisme de transmission variable par courroie destine a des groupes auxiliaires

Info

Publication number
EP1454043A1
EP1454043A1 EP02790363A EP02790363A EP1454043A1 EP 1454043 A1 EP1454043 A1 EP 1454043A1 EP 02790363 A EP02790363 A EP 02790363A EP 02790363 A EP02790363 A EP 02790363A EP 1454043 A1 EP1454043 A1 EP 1454043A1
Authority
EP
European Patent Office
Prior art keywords
drive
pulley
auxiliary units
freewheel
strand
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
Application number
EP02790363A
Other languages
German (de)
English (en)
Other versions
EP1454043B1 (fr
Inventor
Norbert Amann
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP1454043A1 publication Critical patent/EP1454043A1/fr
Application granted granted Critical
Publication of EP1454043B1 publication Critical patent/EP1454043B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/06—Endless member is a belt

Definitions

  • the invention relates, according to the preamble of claim 1, to a device for driving auxiliary units with two mutually different transmission ratios, which on the input side has a drive connected to the crankshaft of an internal combustion engine and on the output side has an output formed by two drive disks for driving the auxiliary units, the drive for the auxiliary units
  • the drive disks for driving the auxiliary units On the device output side, the drive disks for driving the auxiliary units have different diameters and, at low crankshaft speeds, the auxiliary units are driven by means of the larger drive disk and, at high crankshaft speeds, the auxiliary units are driven by means of the smaller drive disk.
  • the object of the invention is to provide a variable belt drive for ancillary units, which is independent of the ancillary units to be driven, which is of simple construction and is therefore both inexpensive to manufacture and to assemble and which takes up only a small amount of space.
  • a device with the features of patent claim 1, the underlying idea including the idea of providing a switching module consisting of a magnetic coupling and an overrunning clutch between the device drive and the device output, with the device drive branching off to a device-driven drive disk and one strand comprises the magnetic coupling and the other strand comprises the freewheel.
  • the strand of the larger drive pulley comprises the magnetic clutch and the strand of the smaller drive pulley encompasses the freewheel, the freewheel acting in such a way that the small drive pulley is carried along when the magnetic clutch is open and when the magnetic clutch is closed and the power flow via the clutch is closed large drive wheel prevents the freewheel from tightening.
  • the entire switching module consisting of magnetic coupling and freewheel is preferably integrated into the drive disks, so that a compact design is achieved, particularly in the axial direction. It is advisable to integrate the clutch magnet in the large drive wheel and the freewheel in the small drive wheel.
  • a drive by means of the small drive disk is expediently carried out with the magnetic clutch switched off, the large drive disk running idle and a drive by means of the large drive disk takes place with the magnetic clutch switched on, the free-wheeling being effective between the large and small drive disk.
  • the small drive pulley together with a first further pulley forms a first transmission stage and the large drive pulley together with a second further pulley forms a second transmission stage; the gear ratio of the first to second gear ratio is preferably 0.4 to 0.7, in particular 0.5 to 0.6.
  • the switching from one translation stage to another is carried out advantageously at a crankshaft speed from 1100 to 2000 min -1, in particular at 1400 to 1600 rpm "1 wherein is carried out at a lower crankshaft speed of the drive via the large drive wheel and at a higher crankshaft speed of the drive via the small drive wheel ,
  • FIG. 1 shows a basic illustration of a drive device with drive and output and division of the power flow over two strands
  • FIG. 2 two drive disks with an integrated switching module
  • Figure 3 shows a drive device in operation with auxiliary units.
  • Figure 1 shows a schematic diagram of a device for driving auxiliary units with drive 10 and output 11, 12 and splitting the power flow into two strands 13, 14.
  • the strand 13 comprises an overrunning freewheel 15, strand 14 a separating clutch 16 in the present case designed as a magnetic coupling.
  • the separating clutch 16 When the separating clutch 16 is open, the power flow from the drive 10 in the strand 13 via the freewheel 15 operated in the reverse direction to the output 12, which is designed, for example, as a drive pulley with a small diameter, so that the auxiliary units are driven at a lower speed.
  • the clutch 16 When the clutch 16 is closed, the power flow from the drive 10 in the line 14 via the closed clutch 16 to the output 11, which is designed, for example, as a drive disk with a large diameter, so that the auxiliary units are driven at a higher speed.
  • the freewheel 15 in the strand 13 is in operation in the freewheel direction, thereby preventing the strands 13 and 14 from being braced against one another.
  • FIG. 2 An embodiment of two drive disks 24, 30 with an integrated switching module is shown in FIG. 2.
  • the input part 20 of the drive device 33 is connected to the crankshaft of an internal combustion engine (not shown here) by means of a plurality of screws 21 distributed over the circumference.
  • a disk 28 is connected in a rotationally fixed manner to the input part 20 via a toothed hub profile 25, which can be frictionally connected to a large pulley 30 via a friction lining 29 when the electromagnet 31 is energized.
  • the disk 28 can of course also be expedient to provide another shaft / hub connection, wherein it can be, for example, a positive connection, for example by means of a feather key or sliding spring, a spline or splined connection, a polygon connection, a front tooth connection, a pin connection or a non-positive connection in the form of a cylindrical or conical press fit.
  • a positive connection for example by means of a feather key or sliding spring, a spline or splined connection, a polygon connection, a front tooth connection, a pin connection or a non-positive connection in the form of a cylindrical or conical press fit.
  • the pulley 30 is rotatably supported by means of two grooved ball bearings 27a, 27b on a bush-shaped extension 28a of the pulley 28 relative to the input part 20, as is the electromagnet 31, which is also secured against rotation by means of a torque arm 32.
  • the use of the toothed hub profile 25 enables the use of small bearings 26, 27a, 27b.
  • a small pulley 24 is mounted by means of two deep groove ball bearings 22a, 22b on the input part 20 radially outside of the fastening screws 21, axially between the deep groove ball bearings 22a, 22b a freewheel 23 is arranged, which allows the relative rotation of the pulley 24 in one direction and in the locks the other direction.
  • the electromagnet 31 is energized, so that via the friction lining 29, a frictional power transmission from the pulley 28 to the pulley 30th
  • a form-fitting switchable connection between the disc 28 and Belt pulley 30 can be carried out, but increased switching shocks must be taken into account
  • the freewheel 23 is in operation in the freewheeling direction, so that tensioning due to the different ratios of the two pulleys 24, 30 is prevented.
  • FIG. 3 shows a drive device 38 in operation with auxiliary units 35, 41, 42.
  • the drive device 38 which is arranged coaxially with the crankshaft (not shown here) of an internal combustion engine, as shown and described in detail with FIG. 2, is driven by the crankshaft in the direction of the arrow.
  • the smaller belt pulley which is arranged on the internal combustion engine side, forms the belt plane together with the drive belt 39b, while the large belt pulley, which is arranged on the side facing away from the internal combustion engine, forms the shift plane together with the shift belt 39a.
  • the drive in the gearshift plane takes place via a pulley 40a arranged on the shaft of a power steering pump 41, which together with the pulley 30 forms a first transmission stage; the power flow continues to take place via a pulley 40b arranged coaxially to the pulley 40a, also on the power steering pump shaft, in the switching plane, the belt 39b driving a water pump 35 and a generator 42 following the direction of rotation.
  • the belts 39a, 39b are each held under tension by means of tensioning rollers 36, 37.
  • the auxiliary units are driven directly in the drive plane by means of the small pulley of the drive device 38, which forms a second gear ratio with the pulley 40b of the power steering pump 41.
  • the pulleys which form the transmission stages with the pulleys 24, 30 of the drive device 38, are not assigned to the power steering pump 41, but to another auxiliary unit such as water pump 35 or generator 42.
  • the boundary between the upper and lower speed range of the internal combustion engine is present above 1100 min -1, preferably at 1400 to 2000 min "1, in particular at approximately 1500 min '1.
  • the switchover is subject to hysteresis, so that a switchover takes place at different speeds depending on the switching direction; the hysteresis is in the range from 50 to 200 min “1 , in particular it is approximately 100 min " 1 .
  • a number of advantages are achieved, such as a greater degree of freedom in the speed design of the auxiliary units, a significant reduction in idling speed, lower fuel consumption, an increase in the nominal power due to lower power consumption of the auxiliary units, and an improvement in the prestige acceleration values due to the lower moment of inertia of the overall belt drive. Also to be emphasized is the use of smaller units, which achieves decisive advantages in terms of installation space.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transmissions By Endless Flexible Members (AREA)
  • Pulleys (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

L'invention concerne un mécanisme de transmission variable par courroie à deux étages destiné à des groupes auxiliaires d'un moteur à combustion interne (24, 30) et comprenant deux poulies de courroie. Ce mécanisme présente un module de commande qui comprend un engrenage magnétique (16) et une roue libre de rattrapage (15) et qui est intégré aux poulies de courroie.
EP02790363A 2001-12-15 2002-11-13 Mecanisme de transmission variable par courroie destine a des groupes auxiliaires Expired - Lifetime EP1454043B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10161700 2001-12-15
DE2001161700 DE10161700A1 (de) 2001-12-15 2001-12-15 Variabler Riemenhochtrieb für Nebenaggregate
PCT/EP2002/012674 WO2003052247A1 (fr) 2001-12-15 2002-11-13 Mecanisme de transmission variable par courroie destine a des groupes auxiliaires

Publications (2)

Publication Number Publication Date
EP1454043A1 true EP1454043A1 (fr) 2004-09-08
EP1454043B1 EP1454043B1 (fr) 2005-09-14

Family

ID=7709360

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02790363A Expired - Lifetime EP1454043B1 (fr) 2001-12-15 2002-11-13 Mecanisme de transmission variable par courroie destine a des groupes auxiliaires

Country Status (3)

Country Link
EP (1) EP1454043B1 (fr)
DE (2) DE10161700A1 (fr)
WO (1) WO2003052247A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20030878A1 (it) * 2003-11-05 2005-05-06 Fiat Ricerche Sistema di trasmissione del moto fra l'albero di un motore a combustione interna di un autoveicolo e un gruppo di dispositivi ausiliari.
DE102007038374B4 (de) * 2007-08-14 2011-04-21 Erwin A. Lang Gmbh & Co. Kg Vorrichtung zum Antreiben eines Kältekompressors, Kältekompressor mit einer solchen Vorrichtung und Verfahren zum Ansteuern einer derartigen Vorrichtung
DE202008011202U1 (de) 2008-08-22 2009-01-29 Kendrion Linnig Gmbh Reibschaltkupplung mit einem von einem Antriebsmotor über einen Antriebsriemen angetriebenen Antriebsrad und Antriebseinheit
DE102011010284B4 (de) * 2011-02-03 2019-12-24 GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) Riementriebanordnung für ein Nebenaggregat eines Kraftfahrzeugs und Kraftfahrzeug mit einer solchen Riementriebanordnung
CN108438961B (zh) * 2018-05-17 2023-09-29 大连华锐重工集团股份有限公司 一种散货码头用自覆盖式降尘带式输送机
DE102019210500B4 (de) 2019-07-16 2021-09-30 Audi Ag Riemenscheibenanordnung
DE102019210501B4 (de) * 2019-07-16 2021-09-30 Audi Ag Riemenscheibenanordnung
DE102019210502B3 (de) * 2019-07-16 2020-12-24 Audi Ag Riemenscheibenanordnung
DE102019210503B4 (de) 2019-07-16 2021-09-30 Audi Ag Riemenscheibenanordnung
DE102020104248B3 (de) * 2020-02-18 2021-01-21 Audi Aktiengesellschaft Riemenscheibenanordnung
US11725575B2 (en) * 2020-11-13 2023-08-15 Ford Global Technologies, Llc Methods and systems for an accessory drive

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DE1526560A1 (de) * 1966-09-27 1970-04-02 Daimler Benz Ag Antrieb fuer Nebenaggregate einer Brennkraftmaschine,insbesondere in Kraftfahrzeugen
DE2703094A1 (de) * 1977-01-26 1978-07-27 Bosch Gmbh Robert Antrieb fuer die nebenaggregate einer brennkraftmaschine, insbesondere in kraftfahrzeugen
DE2801812A1 (de) * 1978-01-17 1979-07-19 Daimler Benz Ag Antriebsvorrichtung fuer nebenaggregate von brennkraftmaschinen, insbesondere kraftfahrzeugantriebsmaschinen
FR2486610B1 (fr) * 1980-07-11 1985-11-08 Paris & Du Rhone Dispositif d'entrainement rotatif a deux vitesses, notamment pour alternateur de vehicule automobile
IT8452936V0 (it) * 1984-02-01 1984-02-01 Riv Officine Di Villar Perosa Unita di trasmissione atta a trasmettere il moto mediante una cinghia di trasmissione dall albero motore di un motore a combustione interna agli accessori del motore stesso
JP2566766B2 (ja) * 1987-01-09 1996-12-25 本田技研工業株式会社 変速駆動装置
WO1988006233A1 (fr) * 1987-02-14 1988-08-25 Zahnradfabrik Friedrichshafen Ag Mecanisme d'entrainement a deux etages pour les auxiliaires d'un vehicule a moteur
JPH01170723A (ja) * 1987-12-25 1989-07-05 Mitsubishi Motors Corp エンジン補機駆動装置
DE3819986A1 (de) * 1988-06-11 1989-12-14 Pierburg Gmbh Regelbarer antrieb und verfahren zu seiner steuerung
DE4118853A1 (de) * 1991-06-07 1992-12-10 Fichtel & Sachs Ag Vorrichtung zur anpassung der drehzahl einer hilfsmaschine an die eines kfz-verbrennungsmotors
DE19623525A1 (de) * 1996-06-13 1997-12-18 Schaeffler Waelzlager Kg Hochtrieb für Nebenaggregate eines Riementriebs
US6071206A (en) * 1998-05-14 2000-06-06 Ntn Corporation Two speed traction drive pulley system
DE19822426C2 (de) * 1998-05-19 2000-03-23 Daimler Chrysler Ag Antriebsvorrichtung für Nebenaggregate einer Hubkolbenbrennkraftmaschine

Non-Patent Citations (1)

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Title
See references of WO03052247A1 *

Also Published As

Publication number Publication date
DE10161700A1 (de) 2003-06-18
WO2003052247A1 (fr) 2003-06-26
DE50204295D1 (de) 2005-10-20
EP1454043B1 (fr) 2005-09-14

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