GB2240613B - A variable ratio transmission - Google Patents

A variable ratio transmission

Info

Publication number
GB2240613B
GB2240613B GB9002359A GB9002359A GB2240613B GB 2240613 B GB2240613 B GB 2240613B GB 9002359 A GB9002359 A GB 9002359A GB 9002359 A GB9002359 A GB 9002359A GB 2240613 B GB2240613 B GB 2240613B
Authority
GB
United Kingdom
Prior art keywords
shaft
fluid coupling
drive
shafts
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
GB9002359A
Other versions
GB9002359D0 (en
GB2240613A (en
Inventor
William Hamilton
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
Application filed by Individual filed Critical Individual
Priority to GB9002359A priority Critical patent/GB2240613B/en
Publication of GB9002359D0 publication Critical patent/GB9002359D0/en
Publication of GB2240613A publication Critical patent/GB2240613A/en
Application granted granted Critical
Publication of GB2240613B publication Critical patent/GB2240613B/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
    • 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
    • F16H61/461—Automatic regulation in accordance with output requirements not involving a variation of the output capacity of the main pumps or motors
    • 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
    • F16H61/4035—Control of circuit flow
    • 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
    • F16H61/472—Automatic regulation in accordance with output requirements for achieving a target output torque
    • 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
    • F16H61/4043—Control of a bypass valve
    • F16H61/4052—Control of a bypass valve by using a variable restriction, e.g. an orifice valve

Abstract

A continuously variable hydraulic transmission is provided in which drive is transmitted from an input drive prop-shaft (10) to an output drive shaft (11) via bevel gearing 18 and a fluid coupling (13, 14) interconnecting the two shafts (10, 11). The fluid coupling includes a pump (13) and motor (14) circuit having an adjustable flow restrictor (17). The transmission includes control apparatus (19) which detects the angular lag of the output shaft (11) compared with the input shaft (10) caused by loading of the output shaft (11) and adjusts the flow restrictor (17) accordingly to vary the transmission ratio of the fluid coupling (13, 14) depending upon the difference in torque between the shafts (10) and (11). The motor (14) (Fig 2) has bladed forward and reverse motors and the apparatus (19) comprises three concentric helical springs <IMAGE>
GB9002359A 1990-02-02 1990-02-02 A variable ratio transmission Expired - Fee Related GB2240613B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9002359A GB2240613B (en) 1990-02-02 1990-02-02 A variable ratio transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9002359A GB2240613B (en) 1990-02-02 1990-02-02 A variable ratio transmission

Publications (3)

Publication Number Publication Date
GB9002359D0 GB9002359D0 (en) 1990-04-04
GB2240613A GB2240613A (en) 1991-08-07
GB2240613B true GB2240613B (en) 1993-02-10

Family

ID=10670322

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9002359A Expired - Fee Related GB2240613B (en) 1990-02-02 1990-02-02 A variable ratio transmission

Country Status (1)

Country Link
GB (1) GB2240613B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2557105C1 (en) * 2014-02-24 2015-07-20 Фарит Фаварисович Ахияров Hydraulic transmission

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB462507A (en) * 1936-06-15 1937-03-10 Josef Beier Improvements in variable-speed gearing
GB1437433A (en) * 1972-07-28 1976-05-26 Richier Sa Hydrostatic transmission systems
GB1482947A (en) * 1973-08-13 1977-08-17 Bosch Gmbh Robert System for the combined control of an internal combustion engine and a hydrostatic transmission connected thereto

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB462507A (en) * 1936-06-15 1937-03-10 Josef Beier Improvements in variable-speed gearing
GB1437433A (en) * 1972-07-28 1976-05-26 Richier Sa Hydrostatic transmission systems
GB1482947A (en) * 1973-08-13 1977-08-17 Bosch Gmbh Robert System for the combined control of an internal combustion engine and a hydrostatic transmission connected thereto

Also Published As

Publication number Publication date
GB9002359D0 (en) 1990-04-04
GB2240613A (en) 1991-08-07

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Legal Events

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

Effective date: 19960202