WO2006032870A1 - Systeme de transmission a rapport a variation continue - Google Patents

Systeme de transmission a rapport a variation continue Download PDF

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Publication number
WO2006032870A1
WO2006032870A1 PCT/GB2005/003622 GB2005003622W WO2006032870A1 WO 2006032870 A1 WO2006032870 A1 WO 2006032870A1 GB 2005003622 W GB2005003622 W GB 2005003622W WO 2006032870 A1 WO2006032870 A1 WO 2006032870A1
Authority
WO
WIPO (PCT)
Prior art keywords
variator
gear
output
teeth
planet
Prior art date
Application number
PCT/GB2005/003622
Other languages
English (en)
Inventor
Philip Duncan Winter
Original Assignee
Torotrak (Development) Limited
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 Torotrak (Development) Limited filed Critical Torotrak (Development) Limited
Priority to EP05784363A priority Critical patent/EP1800026A1/fr
Publication of WO2006032870A1 publication Critical patent/WO2006032870A1/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
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
    • F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
    • F16H37/0833—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths
    • F16H37/084—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths at least one power path being a continuously variable transmission, i.e. CVT
    • F16H37/086—CVT using two coaxial friction members cooperating with at least one intermediate friction member
    • 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
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
    • F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
    • F16H37/0833—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths
    • F16H37/084—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths at least one power path being a continuously variable transmission, i.e. CVT
    • 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
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/66—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings
    • F16H2061/6601—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with arrangements for dividing torque and shifting between different ranges

Definitions

  • a continuously variable ratio transmission unit (known as a variator) connected coaxially to the system input shaft and
  • train G is driven by a system input shaft I and carries a plurality of double-spur planetary gears P, one of the spurs X meshing with an input sun gear Z connected to the variator output shaft and the other of the spurs Y, identical in size to the first spur gear, meshing
  • the variator always transmits 100% of the input power from the engine and can operate over
  • Such transmission systems normally form part of a multi-regime transmission
  • the variator is designed to transmit 100% of the engine power, it must be built to withstand
  • a continuously variable ratio transmission system comprises:
  • a continuously variable ratio transmission unit (variator) connected coaxially to the system input shaft and having a coaxial variator output shaft; and a mixing planetary gear train having an input sun gear drivably connected to the
  • ratio Rl (the number of teeth on the input sun gear ⁇ by the number of
  • the power split is greatest at the variator ratio corresponding to synchronous ratio, where the demands on the variator are greatest.
  • the advantage is that the variator can be made more compact, as it never
  • Fig. 1 is a diagrammatic representation of a first embodiment of continuously
  • variable transmission in accordance with the present invention showing the principle of
  • Fig. 2 is a series of graphs showing the proportion of engine power transmitted by the variator with the arrangement of Fig. 1 for different values of R2/R1 (to be
  • Fig. 3 is a diagrammatic illustration of a second embodiment of continuously variable transmission in accordance with the present invention.
  • Fig. 4 is a digrammatic illustration of a known arrangement of continuously
  • toroidally-recessed discs 10 arranged one at each end of the unit and a pair of similar output discs 12, each facing a respective one of the input discs 10 and rotating with each
  • Sets of rollers 14 are mounted between the opposing faces of the input and output discs 10, 12 to transmit drive from the input discs 10 to the output discs 12 with a ratio which is variable by tilting the rollers 14.
  • roller is well known and will not be described further hereinafter.
  • the input discs 10 are connected to and driven by a system input shaft 16.
  • the variator provides an output via a tubular variator output shaft 18 which
  • the end of the shaft 18 remote from the variator V drives an input sun. gear S 1 of a planetary gear set Gl .
  • the sun gear Sl in turn drives a plurality of identical planetary gears Pl mounted on the carrier Cl .
  • the planet gears Pl are each mounted on the carrier Cl by
  • Rl is defined as [number of teeth on sun S 1 ⁇ by number of teeth on planet Pl]
  • gearing P is arranged so that R2 ⁇ Rl .
  • the sun gears Sl and S2 may both have 33 teeth
  • planetary gear Pl may have 23 teeth
  • planetary gear P2 may have 24 teeth.
  • Fig. 2 is a graph showing the proportion of engine power transmitted by the variator against the variator ratio, for different values of Rl/ R2 for a typical transmission.
  • the variator As the variator moves away from synchronous ratio, more of the engine power passes through the variator. Thus, the variator can be made more compact as it never transmits 100% of the engine power.
  • Fig. 1 The arrangement of Fig. 1 is a single-regime transmission to show the principle
  • Fig. 1 In practice, the arrangement of Fig. 1 would form the high-regime part of a multi-regime transmission. An example of such a transmission is illustrated in Fig.
  • gear input Rl typically of 25 teeth
  • output gear R2 typically of 27 teeth
  • annulus forms the carrier C2 for identical intermeshing radially inner and outer identical planetary gears P4 and P5 (typically having 16 teeth), the outer gear P4 of which meshes with a fixed annulus A2
  • gear set G2 The number of teeth for the components of the gear set G2 are given by way of example only.
  • planetary gears P2, P3 and planetary gears P4, P5 need not be identical.
  • V i.e. in a condition where the transmission output speed would be the same in both high

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

L’invention concerne une transmission à variation continue comprenant des arbres d’entrée et de sortie système coaxiaux (16, 20), un module de transmission à rapport à variation continue (variateur) (V) couplé coaxialement à l’arbre d’entrée système (16) et comportant un arbre de sortie à variateur coaxial (18) et un train d’engrenages planétaire mélangeur (G1). Le train d’engrenages planétaire mélangeur comprend un pignon solaire d’entrée (S 1) couplé à l’arbre de sortie à variateur (18) pour entraîner celui-ci, un porte-satellite (C 1) couplé à l’arbre d’entrée système (16) pour entraîner celui-ci, un premier pignon satellite (P 1) monté sur le porte-satellite (C 1) et s’engrenant avec le pignon solaire d’entrée (S 1) pour entraîner celui-ci, un deuxième pignon satellite (P2) monté sur le porte-satellite (C 1) et conçu pour être entraîné en rotation avec le premier pignon satellite (P 1) et s’engrener avec un pignon solaire de sortie (S2) couplé à un arbre de sortie (20) pour entraîner celui-ci. Le rapport R1 (le nombre de dents sur le pignon solaire d’entrée divisé par le nombre de dents sur le premier pignon satellite) est choisi de façon à être supérieur à R2 (le nombre de dents sur le pignon solaire de sortie divisé par le nombre de dents sur le deuxième pignon satellite), si bien que le variateur transmet en permanence moins de 100% de la puissance du moteur, ce qui permet de le rendre plus compact.
PCT/GB2005/003622 2004-09-20 2005-09-20 Systeme de transmission a rapport a variation continue WO2006032870A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05784363A EP1800026A1 (fr) 2004-09-20 2005-09-20 Systeme de transmission a rapport a variation continue

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0420865.8 2004-09-20
GB0420865A GB2418235A (en) 2004-09-20 2004-09-20 CVT with a compact variator which transmits less than 100% of engine power

Publications (1)

Publication Number Publication Date
WO2006032870A1 true WO2006032870A1 (fr) 2006-03-30

Family

ID=33306879

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2005/003622 WO2006032870A1 (fr) 2004-09-20 2005-09-20 Systeme de transmission a rapport a variation continue

Country Status (3)

Country Link
EP (1) EP1800026A1 (fr)
GB (1) GB2418235A (fr)
WO (1) WO2006032870A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006103294A1 (fr) * 2005-03-31 2006-10-05 Torotrak (Development) Limited Transmission a variation continue

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0703351D0 (en) 2007-02-21 2007-03-28 Torotrak Dev Ltd Continuously variable transmission
CN102712312B (zh) 2009-12-16 2015-08-05 艾里逊变速箱公司 变换器故障检测系统
US8578802B2 (en) 2009-12-16 2013-11-12 Allison Transmission, Inc. System and method for multiplexing gear engagement control and providing fault protection in a toroidal traction drive automatic transmission
CN102713361B (zh) 2009-12-16 2015-11-25 艾里逊变速箱公司 变换器闭锁阀系统
WO2011075427A1 (fr) 2009-12-16 2011-06-23 Allison Transmission, Inc. Système et procédé pour commander la force de charge finale d'un variateur
CA2784373C (fr) 2009-12-16 2017-11-07 Allison Transmission, Inc. Systeme d'actionnement de soupape rapide pour boite de vitesses automatique
US8401752B2 (en) 2009-12-16 2013-03-19 Allison Transmission, Inc. Fail-to-neutral system and method for a toroidal traction drive automatic transmission
JP2013521456A (ja) * 2010-03-08 2013-06-10 トランスミッション・シーヴイティーコープ・インコーポレーテッド 動力混合機構を備えている変速機装置
US8784257B2 (en) 2010-05-06 2014-07-22 Volvo Construction Equipment Ab Continuously variable transmission and a working machine
EP2606258B1 (fr) 2010-08-16 2020-08-05 Allison Transmission, Inc. Système d'engrenages pour une transmission à variation continue
WO2012082871A1 (fr) 2010-12-15 2012-06-21 Long Charles F Programme de soupape multiplexe de variateur pour transmission d'entraînement par traction toroïdale
EP2655938A4 (fr) 2010-12-15 2016-07-27 Allison Transm Inc Programme de soupapes de commutation de variateur pour transmission d'entraînement par traction toroïdale
WO2012082843A1 (fr) 2010-12-15 2012-06-21 Long Charles F Système régulateur à deux pompes pour boîte de vitesses de véhicule à moteur
CN109312840B (zh) * 2016-04-12 2022-08-05 艾里逊变速箱公司 无级变速器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1026424A2 (fr) * 1999-02-03 2000-08-09 Isuzu Motors Limited Transmission toroidale à variation continue
US20020019285A1 (en) * 2000-08-11 2002-02-14 Steffen Henzler Transmission arrangement
US20020169048A1 (en) * 2001-04-28 2002-11-14 Steffen Henzler Speed change transmission arrangement including a continuously variable toriodal transmission
WO2003064892A1 (fr) * 2002-02-01 2003-08-07 Torotrak (Development) Limited Systeme de transmission a variation continue

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2100372B (en) * 1979-06-20 1983-06-02 Nat Res Dev Improvements in or relating to steplesslyvariable ratio transmissions
DE4327435B4 (de) * 1992-07-06 2008-10-16 Volkswagen Ag Getriebeanordnung für Fahrzeuge
DE10021912A1 (de) * 2000-05-05 2001-11-08 Daimler Chrysler Ag Stufenloses Fahrzeuggetriebe
WO2004008001A1 (fr) * 2002-07-12 2004-01-22 Jongwan Lee Transmission a variation continue a grand angle
JP3921148B2 (ja) * 2002-08-07 2007-05-30 ジヤトコ株式会社 パワースプリット型無段変速装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1026424A2 (fr) * 1999-02-03 2000-08-09 Isuzu Motors Limited Transmission toroidale à variation continue
US20020019285A1 (en) * 2000-08-11 2002-02-14 Steffen Henzler Transmission arrangement
US20020169048A1 (en) * 2001-04-28 2002-11-14 Steffen Henzler Speed change transmission arrangement including a continuously variable toriodal transmission
WO2003064892A1 (fr) * 2002-02-01 2003-08-07 Torotrak (Development) Limited Systeme de transmission a variation continue

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006103294A1 (fr) * 2005-03-31 2006-10-05 Torotrak (Development) Limited Transmission a variation continue
GB2440058A (en) * 2005-03-31 2008-01-16 Torotrak Dev Ltd Continuously variable transmission
US8142323B2 (en) 2005-03-31 2012-03-27 Torotrak (Development) Limited Continuously variable transmission

Also Published As

Publication number Publication date
GB2418235A (en) 2006-03-22
GB0420865D0 (en) 2004-10-20
EP1800026A1 (fr) 2007-06-27

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