GB914314A - Improvements in or relating to variable-ratio hydrostatic differential transmissions - Google Patents

Improvements in or relating to variable-ratio hydrostatic differential transmissions

Info

Publication number
GB914314A
GB914314A GB1881359A GB1881359A GB914314A GB 914314 A GB914314 A GB 914314A GB 1881359 A GB1881359 A GB 1881359A GB 1881359 A GB1881359 A GB 1881359A GB 914314 A GB914314 A GB 914314A
Authority
GB
United Kingdom
Prior art keywords
motor
hydrostatic pump
fast
gear
pump
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
Application number
GB1881359A
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.)
Renault SAS
Regie Nationale des Usines Renault
Original Assignee
Renault SAS
Regie Nationale des Usines Renault
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 Renault SAS, Regie Nationale des Usines Renault filed Critical Renault SAS
Publication of GB914314A publication Critical patent/GB914314A/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
    • 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
    • F16H2047/045—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 the fluid gearing comprising a plurality of pumps or motors

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Fluid Gearings (AREA)
  • Retarders (AREA)

Abstract

914,314. Hydromechanical variable-speed gear. REGIE NATIONALE DES USINES RENAULT. June 2, 1959 [July 18, 1958], No. 18813/59. Class 80 (2). A driving-shaft 1, Fig. 1, carries a sun-gear 2 meshing planet pinions 10 mounted in a carrier 11 fast with a driven shaft 12, the driving shaft also being connected directly to the input member 3 of an adjustable capacity hydrostatic pump/motor 4 of which the output member 5 is fast both with a ring gear 6 meshing the planet pinions 10 and with the input member 7 of a second adjustable capacity hydrostatic pump/motor 8, the latter having its output member 9 secured to a stationary casing. The two hydrostatic pump/motor units 4, 8 have their fluid circuits connected through means not shown. By setting the hydrostatic pump/ motor 4 to give its maximum fluid displacement while the hydrostatic pump/motor 8 is adjusted to give no fluid displacement, the input and output members 3, 5 of the hydrostatic pump/ motor 4 are locked together and a direct drive between the shafts 1, 12 is obtained. By adjusting the hydrostatic pump/motor 8 to give maximum fluid displacement while adjusting the hydrostatic pump/motor 4 to give no fluid displacement, the input member 7 of the hydrostatic pump/motor 8 is held stationary, together with the ring-gear 6, and a reduced ratio is obtained between the driving and driven shafts 1, 12. Continuous variation of ratio is obtained by intermediate settings of the adjustable capacity hydrostatic pump/motors 4, 8, with extension of the ratios obtained beyond the direct and mechanical reduced ratio settings described. In a preferred embodiment, a driving-shaft 1, Fig. 2, is fast with a sun-gear 2 meshing planet pinions 10 in a carrier 11 fast on a driven shaft 12, a pump/motor unit 3 fast with the shaft 1 carrying pistons 15 coacting with an adjustable swash-plate 5 trunnioned in a sleeve 6<SP>1</SP> fast with a ring gear 6 meshing the planet pinions. A second pump/motor 9 is fast with a stationary casing 18 and carries pistons 14 coacting with an adjustable swash-plate 7 trunnioned in a sleeve 19 secured to a valve plate 13 in turn secured to the sleeve 6<SP>1</SP>. Ducts 17 in the plate 13 allow the passage of fluid between the pump/motors 3, 9. The two swash-plates 5, 7 are so interconnected that one is normal to the gear axis when the other is inclined to the normal, and vice versa, turning the swash-plates adjusting the gear ratio. The swash-plates 5, 7 may be turned by mechanical or hydraulic means.
GB1881359A 1958-07-18 1959-06-02 Improvements in or relating to variable-ratio hydrostatic differential transmissions Expired GB914314A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR770648A FR1231667A (en) 1958-07-18 1958-07-18 Variable-ratio hydraulic differential transmission

Publications (1)

Publication Number Publication Date
GB914314A true GB914314A (en) 1963-01-02

Family

ID=8707025

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1881359A Expired GB914314A (en) 1958-07-18 1959-06-02 Improvements in or relating to variable-ratio hydrostatic differential transmissions

Country Status (2)

Country Link
FR (1) FR1231667A (en)
GB (1) GB914314A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2181195A (en) * 1985-10-04 1987-04-15 Gen Motors France Variable-ratio power transmission mechanism
US5807199A (en) * 1996-02-12 1998-09-15 Keller; Gottfried Hydro-mechanical gearbox
WO2000043696A1 (en) * 1999-01-20 2000-07-27 Zf Friedrichshafen Ag Variable-ratio marine gear step
CN103867686A (en) * 2012-12-17 2014-06-18 林德液压两合公司 Power split transmission of a drive assembly of a vehicle
EP4124779A1 (en) * 2021-07-26 2023-02-01 Danfoss Scotland Ltd A hydraulic transmission

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2586779B1 (en) * 1985-09-02 1987-12-18 Sulzer Ag HYDROMECHANICAL TORQUE TRANSMISSION DEVICE

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2181195A (en) * 1985-10-04 1987-04-15 Gen Motors France Variable-ratio power transmission mechanism
GB2181195B (en) * 1985-10-04 1989-12-28 Gen Motors France Variable-ratio power transmission mechanism
US5807199A (en) * 1996-02-12 1998-09-15 Keller; Gottfried Hydro-mechanical gearbox
WO2000043696A1 (en) * 1999-01-20 2000-07-27 Zf Friedrichshafen Ag Variable-ratio marine gear step
CN103867686A (en) * 2012-12-17 2014-06-18 林德液压两合公司 Power split transmission of a drive assembly of a vehicle
US9334939B2 (en) 2012-12-17 2016-05-10 Linde Hydraulics Gmbh & Co. Kg Power split transmission of a traction drive of a vehicle
EP4124779A1 (en) * 2021-07-26 2023-02-01 Danfoss Scotland Ltd A hydraulic transmission
WO2023006769A1 (en) 2021-07-26 2023-02-02 Danfoss Scotland Ltd A hydraulic transmission

Also Published As

Publication number Publication date
FR1231667A (en) 1960-09-30

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