GB2220236B - Variable ratio power transmission - Google Patents

Variable ratio power transmission

Info

Publication number
GB2220236B
GB2220236B GB8909830A GB8909830A GB2220236B GB 2220236 B GB2220236 B GB 2220236B GB 8909830 A GB8909830 A GB 8909830A GB 8909830 A GB8909830 A GB 8909830A GB 2220236 B GB2220236 B GB 2220236B
Authority
GB
United Kingdom
Prior art keywords
power transmission
variable ratio
ratio power
variable
transmission
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.)
Expired - Fee Related
Application number
GB8909830A
Other versions
GB2220236A (en
GB8909830D0 (en
Inventor
Malcolm Tomlinson
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.)
Individual
Original Assignee
Individual
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
Priority claimed from GB888814525A external-priority patent/GB8814525D0/en
Application filed by Individual filed Critical Individual
Priority to DE68917538T priority Critical patent/DE68917538T2/en
Priority to EP89305983A priority patent/EP0347186B1/en
Publication of GB8909830D0 publication Critical patent/GB8909830D0/en
Priority to US07/367,162 priority patent/US4950208A/en
Publication of GB2220236A publication Critical patent/GB2220236A/en
Application granted granted Critical
Publication of GB2220236B publication Critical patent/GB2220236B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • F16H37/0846—CVT using endless flexible members
    • 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
    • F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
    • F16H47/06—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the hydrokinetic type
    • F16H47/065—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the hydrokinetic type the mechanical gearing being of the friction or endless flexible member type
    • 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
    • F16H2015/383—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 with two or more sets of toroid gearings arranged in parallel
    • 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
    • F16H2037/088—Power split variators with summing differentials, with the input of the CVT connected or connectable to the input shaft
    • F16H2037/0886—Power split variators with summing differentials, with the input of the CVT connected or connectable to the input shaft with switching means, e.g. to change ranges

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
GB8909830A 1988-06-17 1989-04-28 Variable ratio power transmission Expired - Fee Related GB2220236B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE68917538T DE68917538T2 (en) 1988-06-17 1989-06-13 Power transmission with variable gear ratio.
EP89305983A EP0347186B1 (en) 1988-06-17 1989-06-13 Variable ratio power transmission
US07/367,162 US4950208A (en) 1988-06-17 1989-06-16 Variable ratio power transmission

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB888814525A GB8814525D0 (en) 1988-06-17 1988-06-17 Variable ratio power transmission
GB898907524A GB8907524D0 (en) 1988-06-17 1989-04-04 Variable ratio power transmission

Publications (3)

Publication Number Publication Date
GB8909830D0 GB8909830D0 (en) 1989-06-14
GB2220236A GB2220236A (en) 1990-01-04
GB2220236B true GB2220236B (en) 1993-01-13

Family

ID=26294051

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8909830A Expired - Fee Related GB2220236B (en) 1988-06-17 1989-04-28 Variable ratio power transmission

Country Status (1)

Country Link
GB (1) GB2220236B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4234629C2 (en) * 1991-10-25 2002-07-18 Volkswagen Ag Continuously variable transmission for motor vehicles
KR0160930B1 (en) * 1996-01-06 1998-12-01 유환덕 Cvt
KR0171313B1 (en) * 1996-03-21 1999-02-18 유환덕 Cvt
DE19631072A1 (en) * 1996-08-01 1998-02-05 Zahnradfabrik Friedrichshafen Gear change mechanism for propulsion of car
CN100338376C (en) * 2004-07-09 2007-09-19 上汽集团奇瑞汽车有限公司 Power shifting driving device for infinite variable speed mechanism
US9644721B2 (en) * 2014-10-17 2017-05-09 Allison Transmission, Inc. Split power infinitely variable transmission architecture incorporating a planetary type ball variator with multiple fixed ranges and low variator load at vehicle launch

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB681502A (en) * 1949-10-06 1952-10-22 Patentverwertung Reimers W Gmbh Improvements in continuously regulable gears
GB1174130A (en) * 1966-09-26 1969-12-10 Deere & Co A Vehicle Transmission and Control System
GB1279796A (en) * 1970-01-29 1972-06-28 Ungerer Irma Improvements in and relating to change-speed gears for driving flying shears
EP0043184A2 (en) * 1980-05-31 1982-01-06 Bl Technology Limited Control systems for continuously variable ratio transmissions
EP0141605A1 (en) * 1983-11-03 1985-05-15 General Motors Corporation Continuously variable power transmission
GB2164106A (en) * 1984-09-05 1986-03-12 Aisin Seiki Continuously variable transmissions
GB2178806A (en) * 1985-06-26 1987-02-18 Daihatsu Motor Co Ltd Variable ratio belt drive power transmission device with direct drive bypassing belt drive

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB681502A (en) * 1949-10-06 1952-10-22 Patentverwertung Reimers W Gmbh Improvements in continuously regulable gears
GB1174130A (en) * 1966-09-26 1969-12-10 Deere & Co A Vehicle Transmission and Control System
GB1279796A (en) * 1970-01-29 1972-06-28 Ungerer Irma Improvements in and relating to change-speed gears for driving flying shears
EP0043184A2 (en) * 1980-05-31 1982-01-06 Bl Technology Limited Control systems for continuously variable ratio transmissions
EP0141605A1 (en) * 1983-11-03 1985-05-15 General Motors Corporation Continuously variable power transmission
GB2164106A (en) * 1984-09-05 1986-03-12 Aisin Seiki Continuously variable transmissions
GB2178806A (en) * 1985-06-26 1987-02-18 Daihatsu Motor Co Ltd Variable ratio belt drive power transmission device with direct drive bypassing belt drive

Also Published As

Publication number Publication date
GB2220236A (en) 1990-01-04
GB8909830D0 (en) 1989-06-14

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee