WO2006005411A1 - Transmission a variation continue - Google Patents

Transmission a variation continue Download PDF

Info

Publication number
WO2006005411A1
WO2006005411A1 PCT/EP2005/006539 EP2005006539W WO2006005411A1 WO 2006005411 A1 WO2006005411 A1 WO 2006005411A1 EP 2005006539 W EP2005006539 W EP 2005006539W WO 2006005411 A1 WO2006005411 A1 WO 2006005411A1
Authority
WO
WIPO (PCT)
Prior art keywords
pulley
crankshaft
belt drive
belt
drive according
Prior art date
Application number
PCT/EP2005/006539
Other languages
German (de)
English (en)
Inventor
Bernd Hartmann
Original Assignee
Schaeffler 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 Kg filed Critical Schaeffler Kg
Publication of WO2006005411A1 publication Critical patent/WO2006005411A1/fr

Links

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
    • F01L1/02—Valve drive
    • F01L1/022—Chain drive
    • 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
    • F01L1/02—Valve drive
    • F01L1/024—Belt drive
    • 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
    • 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
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/14—Tappets; Push rods
    • F01L1/16—Silencing impact; Reducing wear
    • 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
    • F01L2810/00—Arrangements solving specific problems in relation with valve gears
    • F01L2810/04—Reducing noise
    • 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
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
    • F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
    • F16H1/06—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with parallel axes
    • F16H1/10—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with parallel axes one of the members being internally toothed
    • 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
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
    • F16H1/20—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members
    • F16H1/22—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
    • F16H1/227—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts comprising two or more gearwheels in mesh with the same internally toothed wheel
    • 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
    • F16H35/00—Gearings or mechanisms with other special functional features
    • F16H2035/003—Gearings comprising pulleys or toothed members of non-circular shape, e.g. elliptical gears
    • 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
    • F16H7/02—Gearings for conveying rotary motion by endless flexible members with belts; with V-belts

Definitions

  • the invention relates to a belt drive, in particular Steue ⁇ approximately drive for an internal combustion engine or one of its ancillaries, with at least one driving crankshaft and at least one abreibendem gear and a belt connecting them, where the Umschlingungstrieb for reassurance in the rotation unevenness is imprinted.
  • Control drives of internal combustion engines with a crankshaft wheel, at least one driven gear and a chain or a toothed belt as a belt, but also other existing on internal combustion engine unit drives are subject to vibration fluctuations due to torque fluctuations or angular velocity changes, which can lead to audible noise in resonance ranges. This is associated with increased frictional forces that can affect the life of the belt drive and its efficiency.
  • a pulley In order to enable a compensation of the vibrations of the second engine order, a pulley is in oval for a motor with four cylinders Execution necessary. The diameter of the pulley changes steadily, with the small and the large diameters alternating in the offset of 90 °.
  • the theoretical pitch angle would be 120 °, ie at 0 starting with the large diameter, the small diameter would follow after 120 ° and, after 240 °, the large diameter would again be achieved and finally at 360 ° again a small diameter, which would then hit the existing at this point large output diameter. It would therefore be at this point a jump, so that such a design is not technically feasible.
  • a three-cylinder engine theoretically requires 1, 5 times the small diameter and 1, 5 times the large diameter. In a four-cylinder engine, the ratios are 2: 2, which is technically feasible with an oval disk. In the case of a six-cylinder, there is also an integer ratio of 3: 3 with a polygonal circumference of the disk.
  • a five-cylinder engine the conditions are similar to those of a three-cylinder engine.
  • a quadrangle can be used for engines with straight cylinder numbers, such as an eight-cylinder engine.
  • the invention is therefore an object of the invention to provide a belt drive of the type mentioned above, the extended possibilities for Aufbrin ⁇ tion of nonuniformity to calm the instinct offers.
  • Crankshaft or pulley out of round with a fixed number is formed of sections with an enlarged diameter and the same number of sections with a reduced diameter and the translation of the differential gear of half the number of cylinders of Brennkraft ⁇ machine divided by the number of sections with the enlarged diameter corresponds.
  • crankshaft gear is toothed with the pulley.
  • a round crankshaft gear engage in a circular internal toothing of the outside non-circular toothing of the pulley or even engage a non-circular crankshaft in a round internal teeth of the outer round teeth of the pulley.
  • FIG. 1 is a partial view of a belt drive according to the invention with a crankshaft and a toothed with this outside Shen outrun trained pulley.
  • Fig. 2 shows a detail of a belt drive, in which instead of
  • Gearing between crankshaft pulley and pulley a planetary gear is provided as a differential gear.
  • a belt drive for a three-cylinder engine is shown.
  • 1 denotes the traction means, that is, for example, a toothed belt, which engages in an unrecognizable oval external toothing of a pulley 2.
  • the pulley 2 is provided with a round internal toothing 3 into which a round crankshaft wheel 4 engages with its external toothing 5.
  • 6 the pitch circle diameter of the belt pulley 2 is shown on the internal toothing 3, while at 7 the pitch circle diameter of the crankshaft wheel 4 is indicated schematically.
  • the Ver- Zahnept are formed so that the circulation ratio of the pulley to the crankshaft 1, 5 amounts. This means that the pulley rotates by a factor of 1, 5 slower than the crankshaft.
  • Fig. 2 is instead of the teeth of the crankshaft 4 and Riemenschei ⁇ be 2 - which in this case turn the outer toothing of the pulley 2 is oval - a connection provided by a planetary gear as a differential gear with a planetary carrier 8 and the planet gears 9 ,
  • the invention is not limited to the illustrated embodiments.
  • Pulling means Pulley Round internal toothing Round crankshaft gear External toothing Pitch circle diameter of the pulley Pitch circle diameter of the crankshaft pulley

Landscapes

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

Abstract

Transmission à variation continue, en particulier unité d'entraînement de commande pour un moteur à combustion interne ou l'une de ses unités secondaires, qui comporte une roue de vilebrequin d'entraînement, au moins une roue dentée entraînée et un moyen d'enroulement reliant les deux roues, une irrégularité étant conférée à la transmission à variation continue en vue de stabiliser la rotation. Une poulie à courroie (2) couplée à la roue de vilebrequin sert de différentiel. La roue de vilebrequin (4) ou la poulie à courroie (2) possède une forme de faux-rond, avec un nombre déterminé de segments à diamètre accru et le même nombre de segments à diamètre réduit. Le rapport d'engrenage du différentiel correspond à la moitié du nombre de cylindres du moteur à combustion interne, divisé par le nombre des segments à diamètre accru.
PCT/EP2005/006539 2004-06-18 2005-06-17 Transmission a variation continue WO2006005411A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004029556.5 2004-06-18
DE102004029556 2004-06-18

Publications (1)

Publication Number Publication Date
WO2006005411A1 true WO2006005411A1 (fr) 2006-01-19

Family

ID=35207693

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/006539 WO2006005411A1 (fr) 2004-06-18 2005-06-17 Transmission a variation continue

Country Status (1)

Country Link
WO (1) WO2006005411A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9341243B2 (en) 2012-03-29 2016-05-17 Litens Automotive Partnership Tensioner and endless drive arrangement
FR3105336A1 (fr) * 2019-12-23 2021-06-25 Commissariat A L`Energie Atomique Et Aux Energies Alternatives Transmission mécanique à poulie non circulaire, dispositif et système robotique associés
US11174921B2 (en) 2016-09-13 2021-11-16 Litens Automotive Partnership V tensioner and endless drive arrangement

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2439520A (en) * 1945-01-08 1948-04-13 Miller Frank Driving mechanism
DE1179436B (de) * 1960-06-01 1964-10-08 Holo Flite Internat Inc Antriebsrolle, insbesondere Riemenscheibe
DE19520508A1 (de) * 1995-06-03 1996-12-05 Audi Ag Umschlingungstrieb
WO2003046413A1 (fr) * 2001-11-27 2003-06-05 Litens Automotive Dispositif de commande synchrone dote d'elements de commande non circulaires

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2439520A (en) * 1945-01-08 1948-04-13 Miller Frank Driving mechanism
DE1179436B (de) * 1960-06-01 1964-10-08 Holo Flite Internat Inc Antriebsrolle, insbesondere Riemenscheibe
DE19520508A1 (de) * 1995-06-03 1996-12-05 Audi Ag Umschlingungstrieb
WO2003046413A1 (fr) * 2001-11-27 2003-06-05 Litens Automotive Dispositif de commande synchrone dote d'elements de commande non circulaires

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9341243B2 (en) 2012-03-29 2016-05-17 Litens Automotive Partnership Tensioner and endless drive arrangement
US11174921B2 (en) 2016-09-13 2021-11-16 Litens Automotive Partnership V tensioner and endless drive arrangement
FR3105336A1 (fr) * 2019-12-23 2021-06-25 Commissariat A L`Energie Atomique Et Aux Energies Alternatives Transmission mécanique à poulie non circulaire, dispositif et système robotique associés

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