WO2008038043A3 - Continuously variable transmission - Google Patents

Continuously variable transmission Download PDF

Info

Publication number
WO2008038043A3
WO2008038043A3 PCT/GB2007/050578 GB2007050578W WO2008038043A3 WO 2008038043 A3 WO2008038043 A3 WO 2008038043A3 GB 2007050578 W GB2007050578 W GB 2007050578W WO 2008038043 A3 WO2008038043 A3 WO 2008038043A3
Authority
WO
WIPO (PCT)
Prior art keywords
variator
torque
launch device
transmission
continuously variable
Prior art date
Application number
PCT/GB2007/050578
Other languages
French (fr)
Other versions
WO2008038043A2 (en
Inventor
Christopher John Greenwood
Original Assignee
Torotrak Dev Ltd
Christopher John Greenwood
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 Dev Ltd, Christopher John Greenwood filed Critical Torotrak Dev Ltd
Priority to CN200780041297.4A priority Critical patent/CN101535110B/en
Priority to JP2009529777A priority patent/JP2010505074A/en
Priority to KR1020147009227A priority patent/KR101440848B1/en
Priority to DE112007002280.9T priority patent/DE112007002280B4/en
Priority to GB0904809A priority patent/GB2455030B/en
Publication of WO2008038043A2 publication Critical patent/WO2008038043A2/en
Publication of WO2008038043A3 publication Critical patent/WO2008038043A3/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18—Propelling the vehicle
    • 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
    • F16H61/664—Friction gearings
    • F16H61/6649—Friction gearings characterised by the means for controlling the torque transmitting capability of the gearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18—Propelling the vehicle
    • B60W30/18009—Propelling the vehicle related to particular drive situations
    • B60W30/18027—Drive off, accelerating from standstill
    • 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
    • F16H15/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members
    • F16H15/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members without members having orbital motion
    • F16H15/04—Gearings providing a continuous range of gear ratios
    • F16H15/06—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B
    • F16H15/32—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line
    • F16H15/36—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line with concave friction surface, e.g. a hollow toroid surface
    • F16H15/38—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line with concave friction surface, e.g. a hollow toroid surface with two members B having hollow toroid surfaces opposite to each other, the member or members A being adjustably mounted between the surfaces
    • 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
    • F16H61/664—Friction gearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/02—Clutches
    • B60W2710/027—Clutch torque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/10—Change speed gearings
    • B60W2710/105—Output torque
    • 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
    • F16H2061/6604—Special control features generally applicable to continuously variable gearings
    • F16H2061/661—Conjoint control of CVT and drive clutch
    • 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
    • F16H37/021—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings toothed gearing combined with continuous variable friction gearing

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Automation & Control Theory (AREA)
  • Friction Gearing (AREA)
  • Control Of Transmission Device (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Abstract

The invention is concerned with control of a continuously variable vehicle transmission. The transmission in question is to have a variator (10) which is coupled between a rotary transmission input (32) and a rotary transmission output (46), to provide continuous variation in a transmission drive ratio, via a launch device such as a clutch (62; 68). The variator and the launch device are constructed and arranged to exert a required torque, defined by an input signal. In accordance with the invention, the same control signal is used to control both the variator torque and the torque capacity of the launch device. In such an arrangement, vehicle launch (i.e. moving away from rest) can be controlled in a straightforward manner by progressively raising the relevant control signal, preferably a hydraulic pressure signal. Further independent claims are including for applying traction load to races (20, 22) of the variator and for a method setting torque of the launch device (62; 68) higher than torque of the variator (10).
PCT/GB2007/050578 2006-09-26 2007-09-24 Continuously variable transmission WO2008038043A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN200780041297.4A CN101535110B (en) 2006-09-26 2007-09-24 Continuously variable transmission
JP2009529777A JP2010505074A (en) 2006-09-26 2007-09-24 Continuously variable transmission
KR1020147009227A KR101440848B1 (en) 2006-09-26 2007-09-24 Continuously variable transmission
DE112007002280.9T DE112007002280B4 (en) 2006-09-26 2007-09-24 Stepless transmission
GB0904809A GB2455030B (en) 2006-09-26 2007-09-24 Continuously variable transmission

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0618929.4A GB0618929D0 (en) 2006-09-26 2006-09-26 Continuously variable transmission
GB0618929.4 2006-09-26

Publications (2)

Publication Number Publication Date
WO2008038043A2 WO2008038043A2 (en) 2008-04-03
WO2008038043A3 true WO2008038043A3 (en) 2008-05-15

Family

ID=37434678

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2007/050578 WO2008038043A2 (en) 2006-09-26 2007-09-24 Continuously variable transmission

Country Status (6)

Country Link
JP (4) JP2010505074A (en)
KR (2) KR101440848B1 (en)
CN (1) CN101535110B (en)
DE (1) DE112007002280B4 (en)
GB (2) GB0618929D0 (en)
WO (1) WO2008038043A2 (en)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5071239B2 (en) * 2008-05-16 2012-11-14 トヨタ自動車株式会社 Toroidal-type continuously variable transmission and synchronization method of its power roller
CN102713351B (en) 2009-12-16 2016-06-29 艾里逊变速箱公司 For controlling the system and method for gear end load forces
EP2513523A4 (en) 2009-12-16 2016-07-06 Allison Transm Inc Fast valve actuation system for an automatic transmission
US8401752B2 (en) 2009-12-16 2013-03-19 Allison Transmission, Inc. Fail-to-neutral system and method for a toroidal traction drive automatic transmission
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
CA2784375C (en) 2009-12-16 2017-10-31 Allison Transmission, Inc. Variator lockout valve system
EP2512892B1 (en) 2009-12-16 2019-01-09 Allison Transmission, Inc. Variator fault detection system
GB2478003B (en) * 2010-02-23 2012-07-25 Torotrak Dev Ltd Variator traction control arrangement
EP2606258B1 (en) 2010-08-16 2020-08-05 Allison Transmission, Inc. Gear scheme for infinitely variable transmission
AU2011343830B2 (en) 2010-12-15 2016-11-03 Allison Transmission, Inc. Variator multiplex valve scheme for a toroidal traction drive transmission
CN103597255B (en) 2010-12-15 2015-12-16 艾里逊变速箱公司 For the gear switching valve scheme of anchor ring traction drive speed changer
CN103370256B (en) 2010-12-15 2016-08-10 艾里逊变速箱公司 Double pump for vehicle transmission regulates system
GB201200357D0 (en) 2012-01-10 2012-02-22 Torotrak Dev Ltd Variator
GB2514294B (en) * 2012-01-23 2016-01-20 Torotrak Dev Ltd Variator
GB201201068D0 (en) 2012-01-23 2012-03-07 Torotrak Dev Ltd Variator
DE102013200843A1 (en) * 2012-02-14 2013-08-14 Schaeffler Technologies AG & Co. KG Multi-range CVT
DE102012221477B4 (en) 2012-11-23 2023-08-03 Zf Friedrichshafen Ag Method for operating a vehicle drive train during a start-up process
GB2510749B (en) 2013-02-13 2015-09-02 Torotrak Dev Ltd Drive arrangement for an engine ancillary such as a supercharger
CN105874241A (en) * 2013-11-29 2016-08-17 托罗特拉克(开发)有限公司 Toroidal variator
EP2955074B1 (en) 2014-06-13 2020-11-04 Perkins Engines Company Limited A variator-assisted transmission and launch control methods for such a transmission
CN105156658B (en) * 2015-09-09 2017-10-24 梁稚子 Battery-operated motor cycle inner rotor motor pendulum-type self-adapting automatic gear shift drive assembly
CN105221734B (en) * 2015-09-09 2018-04-03 梁稚子 Battery-operated motor cycle external rotor electric machine pendulum-type self-adapting automatic gear shift drive assembly
CA3027365A1 (en) 2016-06-13 2017-12-21 Joe G. Villarreal Transmission assembly and method
CN109883598B (en) * 2019-04-15 2021-06-04 中车株洲电力机车有限公司 Method for detecting traction force of rail locomotive

Citations (3)

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Publication number Priority date Publication date Assignee Title
US6120413A (en) * 1998-07-24 2000-09-19 Nissan Motor Co., Ltd. Line pressure control device for automatic transmission
US20050043138A1 (en) * 2001-08-31 2005-02-24 Fuller John William Edward Continuously variable transmission and method of operation thereof
WO2005047738A1 (en) * 2003-11-07 2005-05-26 Torotrak (Development) Limited Control of the line pressure in a multi-regime continuously variable transmission

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Publication number Priority date Publication date Assignee Title
US6120413A (en) * 1998-07-24 2000-09-19 Nissan Motor Co., Ltd. Line pressure control device for automatic transmission
US20050043138A1 (en) * 2001-08-31 2005-02-24 Fuller John William Edward Continuously variable transmission and method of operation thereof
WO2005047738A1 (en) * 2003-11-07 2005-05-26 Torotrak (Development) Limited Control of the line pressure in a multi-regime continuously variable transmission

Also Published As

Publication number Publication date
WO2008038043A2 (en) 2008-04-03
CN101535110B (en) 2014-04-09
JP2018200115A (en) 2018-12-20
GB0618929D0 (en) 2006-11-08
KR101440848B1 (en) 2014-11-03
DE112007002280T5 (en) 2009-08-13
CN101535110A (en) 2009-09-16
GB2455030B (en) 2011-04-20
GB0904809D0 (en) 2009-05-06
DE112007002280B4 (en) 2019-03-21
GB2455030A (en) 2009-06-03
KR20140063777A (en) 2014-05-27
JP6926379B2 (en) 2021-08-25
JP2017062039A (en) 2017-03-30
JP2010505074A (en) 2010-02-18
JP2015007481A (en) 2015-01-15
KR20090064590A (en) 2009-06-19

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