WO2011150912A1 - Poulie à courroie de vilebrequin - Google Patents

Poulie à courroie de vilebrequin Download PDF

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Publication number
WO2011150912A1
WO2011150912A1 PCT/DE2011/001097 DE2011001097W WO2011150912A1 WO 2011150912 A1 WO2011150912 A1 WO 2011150912A1 DE 2011001097 W DE2011001097 W DE 2011001097W WO 2011150912 A1 WO2011150912 A1 WO 2011150912A1
Authority
WO
WIPO (PCT)
Prior art keywords
pulley
crankshaft
clutch
crankshaft pulley
belt
Prior art date
Application number
PCT/DE2011/001097
Other languages
German (de)
English (en)
Inventor
Peter Greb
Original Assignee
Schaeffler Technologies Gmbh & Co. Kg
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 Schaeffler Technologies Gmbh & Co. Kg filed Critical Schaeffler Technologies Gmbh & Co. Kg
Priority to DE112011101894T priority Critical patent/DE112011101894A5/de
Publication of WO2011150912A1 publication Critical patent/WO2011150912A1/fr

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
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/32—Friction members
    • F16H55/36—Pulleys
    • 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

Definitions

  • the invention relates to a Kurbelwellenriemenschetbe for transmitting a torque between a crankshaft and a belt drive with a freewheel.
  • German patent application DE 195 35 889 A1 discloses a one-way clutch is known, which is arranged between a pulley and a shaft.
  • the known overrunning clutch is suitable for driving a generator and is part of a pulley, which serves to drive the generator.
  • By using the one-way clutch an internal damping is made possible, so that the torque transmission of the traction mechanism is improved.
  • European Patent EP 0 980 479 B1 discloses a belt drive system having a generator clutch freewheel clutch comprising a torsion coil spring and a one-way clutch mechanism. As a result, the driving torques of the generator pulley can be transmitted to a hub yielding. In addition, the generator pulley can be uncoupled from the hub in one direction.
  • German patent DE 196 36 628 C1 a Freiiauf with a clamping body is known, which is formed by an extending in the circumferential direction of a gap, elastically deformed coil spring.
  • European Patent EP 0 782 674 B1 discloses a crank-shaft decoupler with a directional clutch which serves to selectively transmit rotational forces between a mounting hub and a pulley.
  • German Offenlegungsschrift DE 10 2005 029 351 A1 discloses a drive wheel for driving an auxiliary unit of an internal combustion engine with a damping device.
  • the object of the invention is to provide a space-neutral solution for a decoupled from the crankshaft crankshaft pulley according to the preamble of claim 1.
  • the crankshaft pulley according to the invention should in particular a start-stop operation, a stationary climate and generator operation, preferably with a pulse starting possibility including Kurbelwellentilger, and / or compensation of rotational irregularities in belt operation, allow.
  • crankshaft pulley for transmitting torque between a crankshaft and a belt drive, with a pulley freewheel, characterized in that the freewheel of the crankshaft pulley is combined with an operable via an actuating lever coupling, by which the Freiiauf can be bridged.
  • the crankshaft pulley is preferably arranged in the drive train of a motor vehicle, which is an internal combustion engine and optionally an electric machine, such as an engine. includes a starter generator.
  • the internal combustion engine is started, for example, by means of the starter generator.
  • the internal combustion engine which is also referred to as an internal combustion engine, for example, is switched off in a start / stop mode or the vehicle is operated purely as a hybrid electric vehicle
  • the belt drive and thus the compressor of the air conditioner can be operated with the clutch open by the starter generator
  • the starter generator may rotate the crankshaft via the belt drive to start the engine.
  • the clutch is opened again.
  • the starter generator can be driven by the crankshaft via the freewheel (regenerative operation), which caused by crankshaft vibrations rotational irregularities are compensated by means of the freewheel analogous to generator freewheels.
  • crankshaft pulley is characterized in that the clutch is actuated by a ramp mechanism.
  • the ramp mechanism is operated, for example, when the pulley or a pulley track rotates in the reverse direction.
  • crankshaft pulley is characterized in that the clutch is formed by a pilot clutch and a belt pulley separating clutch arranged between the pilot clutch and the crankshaft.
  • crankshaft pulley is characterized in that the clutch is biased by an external spring means in a closed position.
  • the external spring device is a spring-loaded actuating lever, the clutch itself is designed as a so-called normally-open clutch (normally open).
  • This clutch is held, for example by an internal spring device in the open position, when the external spring device causes a lower force than the internal clutch spring.
  • the clutch In stand climate or generator mode, the clutch is open. To start the engine via the starter generator as the clutch closed at least for the duration of the startup.
  • crankshaft pulley is characterized in that the coupling is designed to be self-opening by the spring device. Closed by the ramp mechanism as the clutch at least for the duration of a startup to start the engine.
  • crankshaft pulley is characterized in that the actuating lever is designed as an actuating belt tensioner.
  • the coupling is frictionally engaged.
  • at least one of the friction partners is preferably provided with at least one friction lining.
  • crankshaft pulley is characterized in that the coupling is designed to be positive.
  • the positive coupling is designed for example as a dog clutch.
  • crankshaft pulley in which the actuating belt tensioner is arranged between an air conditioning compressor and the crankshaft pulley.
  • a further preferred embodiment of the arrangement of the crankshaft pulley is characterized in that the actuating belt tensioner is connected via a belt in connection with at least two other tensioning rollers.
  • a first tensioning roller is preferably arranged between the crankshaft pulley according to the invention and a starter generator.
  • a second tension roller is preferably arranged between the starter generator and the air conditioning compressor.
  • crankshaft pulley By the above-described embodiment and arrangement of the crankshaft pulley according to the invention, a separation of the pulley and crankshaft without a separate actuator is possible.
  • FIG. 1 shows a schematic principle of the crankshaft pulley according to the invention with a booster clutch in section
  • FIG. 2 schematically shows the belt drive of the crankshaft pulley according to the invention in a top view, including the necessary tensioners and their pivoting ranges,
  • Figure 3 shows the belt drive with the crankshaft pulley according to the invention in a
  • FIG. 4 shows the belt drive of the crankshaft pulley according to the invention in a top view in the operating state "stationary air conditioning"
  • Figure 5 shows the belt drive with the crank pulley according to the invention in a
  • Figure 6 is a schematic diagram of the invention Kurbelraumriemensay with positive coupling in section.
  • FIGS. 1 to 6 show a crankshaft pulley according to the invention in various illustrations and individual parts.
  • the crankcase pulley comprises a pulley track, which is also referred to as pulley 1 or belt track for a short time and serves to couple a belt 11 of a belt drive to a belt starter generator 12 and / or to an air conditioning compressor 13.
  • the crankcase pulley 10 is attached to a crankshaft 2 of a motor vehicle by means of a central screw.
  • the crankshaft 2 is driven by an internal combustion engine, which is also referred to as an internal combustion engine.
  • FIG. 1 shows an embodiment of the crankshaft pulley 10 according to the invention, in which the clutch is formed by a pilot clutch 7 and a pulley release clutch 4.
  • the pulley release clutch 4 is formed in the illustrated embodiment as a booster clutch. If, with the crankshaft 2 and the rotating pulley 1 stationary, a small pilot clutch 7 arranged between the crankshaft 2 and a first ramp mechanism 8 connected to the pulley 2 is closed, the clutch-side part of the first ramp mechanism 8 is braked and rotated against the stationary crankshaft 2. Thereby, the pulley side part of the first Rampmechantsmus 8 performs an axial movement. By the axial movement of the first ramp mechanism 8, the pulley release clutch 4 is closed.
  • the first ramp mechanism 8 is not designed to be self-locking, so that when opening the pilot clutch 7 and the pulley release clutch 4 opens again.
  • the actuation of the pilot clutch 7 takes place in the crankshaft pulley 10 according to the invention does not have an additional required actuator, but by a first ramp mechanism 8, which generates an axial movement to close the pilot clutch 7 upon rotation of an attached operating lever with belt tensioner 9.
  • a tensioning roller is mounted, which presses on the belt 11 in a spring-biased manner and presses it against the pretensioning of two further belts 11. brought tension rollers 14, 15 deflected by an actuating travel for the second ramp mechanism 6.
  • the first ramp mechanism 8 connected thereto actuates the (normally open) pilot control clutch 7 and keeps it closed.
  • Figure 2 shows a possible arrangement of tension rollers 9, 14, 15 and pulley 10, 12, 13 in the belt drive according to the invention.
  • the order of the components in the pulling direction of the belt 11 is shown in Figure 2 as follows.
  • a pulley of a starter generator 12 and the pulley of an air conditioning compressor 13 a first tensioner 15 is arranged with tension roller.
  • the crankshaft pulley 10 is followed in the belt tensioning direction by a second tensioner 14 with tensioning roller and the pulley of the starter generator 12.
  • FIG. 3 shows the unloaded, stationary state of the belt drive. Due to the stronger in contrast to the tensioners 14 and 15 biasing force of the operating lever with belt tensioner 9 of the belt 1 is kept taut and closed due to the design of the operating lever, the pilot clutch 7.
  • the starter generator 12 If the starter generator 12 is energized and rotated in this state, the pulley release clutch 4 is closed via the closed pilot clutch 7 and the second ramp mechanism 6 and the crankshaft 2 is rotated with the pulley 1. As a result, the internal combustion engine can be started.
  • the pulley release clutch 10 By performing the pulley release clutch 10 as a friction clutch, a pulse start function is possible. If the air conditioning compressor 13 is switched off (load-free) in the operating state "stationary air-conditioning", the now unloaded belt area is tensioned between the crankshaft 2 and the air-conditioning compressor 13. As a result, the pilot control clutch 7 and the belt pulley separating clutch 4 are closed and the internal combustion engine started.
  • FIG. 6 shows another possible embodiment of the crankshaft pulley 10 according to the invention.
  • the pulley 1 instead of the frictional booster clutch (pilot clutch, ramp mechanism and pulley disconnect clutch), the pulley 1 includes a normally open positive clutch (eg, dog clutch 16) directly through the axial travel of the first ramp mechanism 8 on the operating lever with belt tensioner 9 can be closed.
  • a normally open positive clutch eg, dog clutch 16
  • This embodiment is less space-consuming and less expensive, but the belt drive must be delayed until the start of the engine initially to a standstill. As a result, no pulse start function is possible in this embodiment.

Landscapes

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

Abstract

L'invention concerne une poulie à courroie de vilebrequin destinée à transmettre un couple de rotation entre un vilebrequin et un entraînement par courroie, ladite poulie comportant une roue libre de poulie à courroie. La roue libre de poulie à courroie dans la poulie à courroie de vilebrequin est associée à un embrayage pouvant être actionné par un levier d'actionnement et permettant de contourner la roue libre de poulie à courroie.
PCT/DE2011/001097 2010-06-04 2011-05-23 Poulie à courroie de vilebrequin WO2011150912A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112011101894T DE112011101894A5 (de) 2010-06-04 2011-05-23 Kurbelwellenriemenscheibe

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010022753.6 2010-06-04
DE102010022753 2010-06-04

Publications (1)

Publication Number Publication Date
WO2011150912A1 true WO2011150912A1 (fr) 2011-12-08

Family

ID=44510616

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2011/001097 WO2011150912A1 (fr) 2010-06-04 2011-05-23 Poulie à courroie de vilebrequin

Country Status (2)

Country Link
DE (2) DE112011101894A5 (fr)
WO (1) WO2011150912A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3001269B1 (fr) * 2013-01-21 2015-02-20 Peugeot Citroen Automobiles Sa Ensemble d'entrainement avec poulie et volant d'inertie

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2914158A (en) * 1956-09-10 1959-11-24 Borg Warner Clutch devices
CH405020A (fr) * 1962-12-04 1965-12-31 Auguste Leveau Raymond Louis Dispositif d'accouplement à disques, utilisable pour le freinage ou l'embrayage
WO1996012122A1 (fr) * 1994-10-14 1996-04-25 Tesma International Inc. Decoupleur de vilebrequin
DE19535889A1 (de) 1995-09-27 1997-04-03 Schaeffler Waelzlager Kg Freilaufkupplung für einen Lichtmaschinenantrieb
DE19636628C1 (de) 1996-09-10 1998-04-23 Freudenberg Carl Fa Freilauf
WO1998050709A1 (fr) * 1997-05-07 1998-11-12 Litens Automotive Partnership Systeme d'entrainement en serpentin avec decoupleur d'alternateur a roue libre ameliore
WO2004065811A1 (fr) * 2003-01-22 2004-08-05 Ab Skf Embrayage et generatrice demarreur comprenant cet embrayage
JP2004245316A (ja) * 2003-02-13 2004-09-02 Ntn Corp 回転伝達機構
DE102005029351A1 (de) 2004-07-02 2006-01-26 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Triebrad zum Antreiben eines Nebenaggregates eines Fahrzeuges

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2914158A (en) * 1956-09-10 1959-11-24 Borg Warner Clutch devices
CH405020A (fr) * 1962-12-04 1965-12-31 Auguste Leveau Raymond Louis Dispositif d'accouplement à disques, utilisable pour le freinage ou l'embrayage
WO1996012122A1 (fr) * 1994-10-14 1996-04-25 Tesma International Inc. Decoupleur de vilebrequin
EP0782674B1 (fr) 1994-10-14 1999-04-28 Tesma International Inc Decoupleur de vilebrequin
DE19535889A1 (de) 1995-09-27 1997-04-03 Schaeffler Waelzlager Kg Freilaufkupplung für einen Lichtmaschinenantrieb
DE19636628C1 (de) 1996-09-10 1998-04-23 Freudenberg Carl Fa Freilauf
WO1998050709A1 (fr) * 1997-05-07 1998-11-12 Litens Automotive Partnership Systeme d'entrainement en serpentin avec decoupleur d'alternateur a roue libre ameliore
EP0980479B1 (fr) 1997-05-07 2003-08-27 Litens Automotive Partnership Systeme d'entrainement en serpentin avec decoupleur d'alternateur a roue libre ameliore
WO2004065811A1 (fr) * 2003-01-22 2004-08-05 Ab Skf Embrayage et generatrice demarreur comprenant cet embrayage
JP2004245316A (ja) * 2003-02-13 2004-09-02 Ntn Corp 回転伝達機構
DE102005029351A1 (de) 2004-07-02 2006-01-26 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Triebrad zum Antreiben eines Nebenaggregates eines Fahrzeuges

Also Published As

Publication number Publication date
DE102011102258A1 (de) 2011-12-08
DE112011101894A5 (de) 2013-03-21

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