GB1426979A - Power drive systems for gas turbine engines - Google Patents

Power drive systems for gas turbine engines

Info

Publication number
GB1426979A
GB1426979A GB2177474A GB2177474A GB1426979A GB 1426979 A GB1426979 A GB 1426979A GB 2177474 A GB2177474 A GB 2177474A GB 2177474 A GB2177474 A GB 2177474A GB 1426979 A GB1426979 A GB 1426979A
Authority
GB
United Kingdom
Prior art keywords
pump
motor
displacement
drive
turbine
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
GB2177474A
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.)
Motors Liquidation Co
Original Assignee
Motors Liquidation Co
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 Motors Liquidation Co filed Critical Motors Liquidation Co
Publication of GB1426979A publication Critical patent/GB1426979A/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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/36—Power transmission arrangements between the different shafts of the gas turbine plant, or between the gas-turbine plant and the power user
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/40—Transmission of power
    • F05D2260/402—Transmission of power through friction drives
    • F05D2260/4023—Transmission of power through friction drives through a friction 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
    • F16H37/06—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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Control Of Fluid Gearings (AREA)
  • Structure Of Transmissions (AREA)

Abstract

1426979 Variable-speed gear GENERAL MOTORS CORP 16 May 1974 [20 July 1973] 21774/74 Heading F2D A variable-speed hydromechanical drive system for a vehicle powered by a gas turbine engine of the kind having a free turbine constituting the output means, which delivers maximum torque when stalled, comprises a hydrostatic transmission of which at least the pump 26 is of variable displacement, first continuous drive means 28, 20 between the turbine 14 and the pump, a planetary gear set comprising a sun gear 46 connected by second continuous drive means 34 with the motor 30, a ring gear 48 connected to the output shaft 54, and planets 50 meshing with the sun and ring gears and mounted on a carrier 42 which is connectible by selectively engageable clutches 22, 36 with the first and second continuous drive means. The arrangement allows use of hydrostatic units with relatively low torque handling capacity by enabling power to be transmitted solely mechanically at low speeds, when torque is highest. As shown, both pump and motor are of variable capacity, having servo adjusting means 28, 32, and the carrier 42 may be held by a brake 40 for reversing. When starting, both pump and motor are set to the same displacement, the brake 40 is released, and clutches 22, 36 are engaged, so that drive is transmitted from the turbine, which may start from a stalled condition, direct to the output shaft 54, the planetary train being locked by the clutch 36, and the pump and motor rotating idly in unison. When the turbine reaches its maximum speed the clutch 36 may be disengaged whereupon the planets will attempt to drive the sun and motor at increased speed so that the pump acts as reaction means. The pump displacement may now be reduced to slow down the motor and sun so that output speed is increased. Further increase of output speed is obtained by adjusting the pump displacement through zero to maximum displacement in the opposite sense, followed by reduction of the motor displacement. For reverse drive the pump is set initially at zero displacement, clutches 32, 36 are disengaged, and the brake 40 is applied. The motor and sun will then drive the ring gear through the non- orbiting planets as the pump displacement is increased. As operation in this mode is limited by the torque handling capacity of the pump and motor means may be provided for limiting the hydraulic system pressure. Various alternative modes of operating the drive system are described. To enable full torque to be transmitted in reverse a modification is described having a reversing gear between the turbine and the clutch 22.
GB2177474A 1973-07-20 1974-05-16 Power drive systems for gas turbine engines Expired GB1426979A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US38104573A 1973-07-20 1973-07-20

Publications (1)

Publication Number Publication Date
GB1426979A true GB1426979A (en) 1976-03-03

Family

ID=23503430

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2177474A Expired GB1426979A (en) 1973-07-20 1974-05-16 Power drive systems for gas turbine engines

Country Status (7)

Country Link
JP (1) JPS5042203A (en)
CA (1) CA1003244A (en)
DE (1) DE2424737C2 (en)
FR (1) FR2237776B1 (en)
GB (1) GB1426979A (en)
IT (1) IT1021573B (en)
SE (1) SE402077B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102667107A (en) * 2009-11-18 2012-09-12 斯奈克玛 Device for changing the transmission ratio between a turbine shaft and a starter/generator shaft of aircraft engine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4306467A (en) * 1977-08-18 1981-12-22 Sundstrand Corporation Hydromechanical transmissions
FR2655401A1 (en) * 1989-12-06 1991-06-07 Bacher Pierre Variable-ratio gearbox (transmission box)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3090253A (en) * 1958-12-18 1963-05-21 Morgan Dev Lab Inc Variable speed transmission
US3396607A (en) * 1966-02-21 1968-08-13 Sundstrand Corp Hydrostatic transmission
US3486329A (en) * 1967-11-24 1969-12-30 Ford Motor Co Control system for gas turbine/transmission power train
DE1964977B2 (en) * 1969-12-24 1971-10-07 Maschf Augsburg Nuernberg Ag CONTROL DEVICE FOR A GAS TURBINE POWER PLANT, IN PARTICULAR FOR DRIVING MOTOR VEHICLES
US3714846A (en) * 1971-02-23 1973-02-06 Sundstrand Corp Hydrostatic-differential transmission
JPS539339B2 (en) * 1973-05-31 1978-04-05

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102667107A (en) * 2009-11-18 2012-09-12 斯奈克玛 Device for changing the transmission ratio between a turbine shaft and a starter/generator shaft of aircraft engine
CN102667107B (en) * 2009-11-18 2015-06-10 斯奈克玛 Device for changing the transmission ratio between a turbine shaft and a starter/generator shaft of aircraft engine

Also Published As

Publication number Publication date
DE2424737A1 (en) 1975-02-06
JPS5042203A (en) 1975-04-17
FR2237776B1 (en) 1977-03-11
SE7409390L (en) 1975-01-21
CA1003244A (en) 1977-01-11
DE2424737C2 (en) 1983-03-24
SE402077B (en) 1978-06-19
FR2237776A1 (en) 1975-02-14
IT1021573B (en) 1978-02-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee