GB2014671A - Hydromechanical Transmission - Google Patents

Hydromechanical Transmission

Info

Publication number
GB2014671A
GB2014671A GB7902700A GB7902700A GB2014671A GB 2014671 A GB2014671 A GB 2014671A GB 7902700 A GB7902700 A GB 7902700A GB 7902700 A GB7902700 A GB 7902700A GB 2014671 A GB2014671 A GB 2014671A
Authority
GB
United Kingdom
Prior art keywords
units
starting
hydrostatic
planetary gear
variable displacement
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.)
Granted
Application number
GB7902700A
Other versions
GB2014671B (en
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.)
Dana Inc
Original Assignee
Dana Inc
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 Dana Inc filed Critical Dana Inc
Publication of GB2014671A publication Critical patent/GB2014671A/en
Application granted granted Critical
Publication of GB2014671B publication Critical patent/GB2014671B/en
Expired 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
    • F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
    • F16H47/02—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type
    • F16H47/04—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type the mechanical gearing being of the type with members having orbital motion
    • 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
    • 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
    • F16H37/10—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 at both ends of intermediate shafts
    • F16H2037/102—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 at both ends of intermediate shafts the input or output shaft of the transmission is connected or connectable to two or more differentials
    • 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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
    • F16H3/093—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears with two or more countershafts
    • F16H3/097—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears with two or more countershafts the input and output shafts being aligned on the same axis
    • 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
    • F16H61/68—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 stepped gearings
    • F16H61/684—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 stepped gearings without interruption of drive
    • F16H61/688—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 stepped gearings without interruption of drive with two inputs, e.g. selection of one of two torque-flow paths by clutches

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structure Of Transmissions (AREA)

Abstract

A hydromechanical transmission for tractors has an input shaft (11) which is driven by a power source (10) and drives dual planetary gear sets (17 to 20 and 21 to 24) each geared to two separate variable displacement hydrostatic pump and/or motor units (13, 14) which are arranged in a closed hydrostatic fluid flow circuit, each planetary gear set also driving a counter shaft (C/S) which is utilized as part of a multispeed transmission with an output shaft (12). The hydrostatic units (13, 14) are used as variable displacement pumps or motors to obtain smooth starting and to eliminate the need for a conventional master clutch normally used for starting a vehicle or for shifting gears, these units also being used to provide the high starting torque through hydraulic torque regeneration. <IMAGE>
GB7902700A 1978-02-16 1979-01-25 Hydromechanical transmission Expired GB2014671B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US87834678A 1978-02-16 1978-02-16

Publications (2)

Publication Number Publication Date
GB2014671A true GB2014671A (en) 1979-08-30
GB2014671B GB2014671B (en) 1982-07-21

Family

ID=25371840

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7902700A Expired GB2014671B (en) 1978-02-16 1979-01-25 Hydromechanical transmission

Country Status (12)

Country Link
JP (1) JPS5510174A (en)
AU (1) AU520647B2 (en)
BR (1) BR7900908A (en)
CA (1) CA1118233A (en)
DE (1) DE2904019A1 (en)
ES (2) ES477728A1 (en)
FR (1) FR2417686A1 (en)
GB (1) GB2014671B (en)
IT (1) IT1114490B (en)
MX (1) MX148463A (en)
NL (1) NL7900286A (en)
SE (1) SE442899B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2531173A1 (en) * 1982-07-30 1984-02-03 Renault HYDRAULIC POWER DERIVATION TRANSMISSION
EP0103026A1 (en) * 1982-03-09 1984-03-21 Kubota Ltd. Hydraulic circuit structure for tractor with stepless hydraulic transmission
US5388450A (en) * 1991-03-15 1995-02-14 Clark-Hurth Components S.P.A. Gearbox with hydrostatic motors particularly for earth-movers

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3333471A1 (en) * 1983-09-16 1985-04-04 Fa. Carl Zeiss, 7920 Heidenheim OPERATING MICROSCOPE FOR TWO OPERATORS
JPS61172111A (en) * 1985-01-25 1986-08-02 Canon Inc Stereomicroscope
DE3605203A1 (en) * 1986-02-19 1987-08-27 Jarchow Friedrich Continuously variable torque-splitting compound power-shift transmission with range changes
DE3512523C1 (en) * 1985-03-21 1986-09-11 Friedrich Prof. Dr.-Ing. 4300 Essen Jarchow Infinitely variable split-torque compound power-shift transmission with range changes
EP0195452B1 (en) * 1985-03-21 1990-10-17 Friedrich Prof. Dr.-Ing. Jarchow Contunuously variable compound power shift transmission of the range-speed type with multiple power path
JPS61226722A (en) * 1985-03-29 1986-10-08 Canon Inc Stereomicroscope
JPH069572B2 (en) * 1986-08-06 1994-02-09 オリンパス光学工業株式会社 Surgical microscope
JPH02261952A (en) * 1989-03-31 1990-10-24 Komatsu Ltd Two-pass hydromechanical transmission and control method therefor
DE4311084C1 (en) * 1993-04-03 1994-09-22 Man Nutzfahrzeuge Ag Drive device of a vehicle
DE4311083C1 (en) * 1993-04-03 1994-07-14 Man Nutzfahrzeuge Ag Automotive transmission mechanism
DE19734825C1 (en) * 1997-08-12 1999-12-16 Clark Equipment Belgium Nv Power shift transmission for a mobile machine
WO2008015549A2 (en) * 2006-08-03 2008-02-07 Toyota Jidosha Kabushiki Kaisha Power split dual input shaft transmission for vehicle
DE102017214716A1 (en) * 2017-08-23 2019-02-28 Zf Friedrichshafen Ag Continuously variable power split transmission with a hydraulic variator

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3204486A (en) * 1963-03-06 1965-09-07 Lalio George M De Infinitely variable power transmission
US3580107A (en) * 1968-10-21 1971-05-25 Urs Systems Corp Transmission
JPS5424066B2 (en) * 1972-04-28 1979-08-18
US3802293A (en) * 1972-08-28 1974-04-09 Eaton Corp Power shift
JPS5546539B2 (en) * 1972-11-06 1980-11-25
US3913411A (en) * 1973-05-07 1975-10-21 Gardner Denver Co Multispeed power transmission with plural countershafts
GB1487581A (en) * 1974-01-11 1977-10-05 Metal Box Co Ltd Article transfer devices

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0103026A1 (en) * 1982-03-09 1984-03-21 Kubota Ltd. Hydraulic circuit structure for tractor with stepless hydraulic transmission
EP0103026B1 (en) * 1982-03-09 1987-07-29 Kubota Ltd. Hydraulic circuit structure for tractor with stepless hydraulic transmission
FR2531173A1 (en) * 1982-07-30 1984-02-03 Renault HYDRAULIC POWER DERIVATION TRANSMISSION
EP0101358A1 (en) * 1982-07-30 1984-02-22 Regie Nationale Des Usines Renault Split torque hydraulic gearing
US5388450A (en) * 1991-03-15 1995-02-14 Clark-Hurth Components S.P.A. Gearbox with hydrostatic motors particularly for earth-movers

Also Published As

Publication number Publication date
FR2417686B1 (en) 1984-02-10
AU520647B2 (en) 1982-02-18
ES485059A1 (en) 1980-04-16
SE442899B (en) 1986-02-03
JPS5510174A (en) 1980-01-24
ES477728A1 (en) 1980-03-01
MX148463A (en) 1983-04-25
IT7947904A0 (en) 1979-02-06
SE7901338L (en) 1979-08-17
BR7900908A (en) 1979-09-04
AU4328679A (en) 1979-08-23
FR2417686A1 (en) 1979-09-14
JPS6363791B2 (en) 1988-12-08
GB2014671B (en) 1982-07-21
DE2904019A1 (en) 1980-01-17
NL7900286A (en) 1979-08-20
CA1118233A (en) 1982-02-16
IT1114490B (en) 1986-01-27

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Legal Events

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