GB783619A - Improvements in and relating to variable ratio hydraulic power transmission devices - Google Patents

Improvements in and relating to variable ratio hydraulic power transmission devices

Info

Publication number
GB783619A
GB783619A GB3070454A GB3070454A GB783619A GB 783619 A GB783619 A GB 783619A GB 3070454 A GB3070454 A GB 3070454A GB 3070454 A GB3070454 A GB 3070454A GB 783619 A GB783619 A GB 783619A
Authority
GB
United Kingdom
Prior art keywords
valve
motor
pump
speed
socketed
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
GB3070454A
Inventor
Arthur Adrian John Willitt
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.)
Dowty Equipment Ltd
Original Assignee
Dowty Equipment Ltd
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 Dowty Equipment Ltd filed Critical Dowty Equipment Ltd
Priority to GB3070454A priority Critical patent/GB783619A/en
Publication of GB783619A publication Critical patent/GB783619A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F01B3/0002—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F01B3/0008—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders having self-acting distribution members, e.g. actuated by working fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F01B3/0002—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F01B3/0017—Component parts, details, e.g. sealings, lubrication
    • F01B3/002—Cylinders
    • 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
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/46—Automatic regulation in accordance with output requirements
    • 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
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/46—Automatic regulation in accordance with output requirements
    • F16H61/47—Automatic regulation in accordance with output requirements for achieving a target output speed

Landscapes

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

Abstract

783,619. Hydrostatic transmissions; fluid-pressure servomotor-control systems. DOWTY EQUIPMENT, Ltd. Oct. 14, 1955 [Oct. 25, 1954], No. 30704/54. Classes 69 (2) and 135. An hydraulic transmission, for driving an alternating current generator at substantially constant speed from an aircraft engine, comprises a fixed displacement swash-plate pump driving a similar motor, and a governor controlled throttle valve controlling the pump inlet. The pump comprises cylinders 21 socketed in a plate 23 carried by a casing 14 fast with an input shaft 5, and pistons 17 socketed in a bearing ring 19 rotatably mounted on a stationary wobble plate 24 of fixed slope. The motor comprises cylinders 58 socketed in a plate 55 fast with the casing 14 and pistons 56 socketed in a bearing ring 54 rotatably mounted on a wobble plate 53 fast with an output shaft 7. An extension 66 of the output shaft carries an eccentric 65 actuating a disc valve 64. Pump discharge passes through check valves 38 and the disc valve 64 to the motor, the exhaust from the motor passing through valve 64 and inlet check valves 39 to the pump. A throttle valve 47 controls the liquid supplied to the inlet check valves 39, the valve 47 being controlled by means of a linkage from a servomotor piston 95. Servopiston 95 works in a cylinder 96 and is moved to the left by a spring 112 and to the right by liquid supplied by a gear pump 74, which also supplies make-up liquid. Supply and exhaust of liquid to and from the servo-cylinder is controlled by a valve spool 87 controlled by a centrifugal governor 85 rotated from the output shaft and by a follow-up valve sleeve 88. At the maximum speed of the prime mover the throttle valve is arranged to be fully closed so that the motor will do no work and the input and output shafts rotate at the same speed. At cruising speed of the prime mover the throttle valve is partially open, and at the minimum operational speed the valve is fully open so that the motor operates at maximum speed to give the required constant output speed.
GB3070454A 1954-10-25 1954-10-25 Improvements in and relating to variable ratio hydraulic power transmission devices Expired GB783619A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3070454A GB783619A (en) 1954-10-25 1954-10-25 Improvements in and relating to variable ratio hydraulic power transmission devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3070454A GB783619A (en) 1954-10-25 1954-10-25 Improvements in and relating to variable ratio hydraulic power transmission devices

Publications (1)

Publication Number Publication Date
GB783619A true GB783619A (en) 1957-09-25

Family

ID=10311829

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3070454A Expired GB783619A (en) 1954-10-25 1954-10-25 Improvements in and relating to variable ratio hydraulic power transmission devices

Country Status (1)

Country Link
GB (1) GB783619A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3063381A (en) * 1958-09-24 1962-11-13 New York Air Brake Co Engine
DE1176954B (en) * 1960-11-21 1964-08-27 Ford Werke Ag Infinitely variable hydrostatic power transmission
WO2011043722A1 (en) * 2009-10-06 2011-04-14 Haldex Traction Ab A hydraulic pump assembly

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3063381A (en) * 1958-09-24 1962-11-13 New York Air Brake Co Engine
DE1176954B (en) * 1960-11-21 1964-08-27 Ford Werke Ag Infinitely variable hydrostatic power transmission
WO2011043722A1 (en) * 2009-10-06 2011-04-14 Haldex Traction Ab A hydraulic pump assembly
US8708123B2 (en) 2009-10-06 2014-04-29 Borgwarner Torqtransfer Systems Ab Hydraulic pump assembly
RU2544027C2 (en) * 2009-10-06 2015-03-10 БоргВарнер ТоркТрансфер Системс АБ Hydraulic pump device

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