GB1527214A - Infinitely variable transmissions - Google Patents

Infinitely variable transmissions

Info

Publication number
GB1527214A
GB1527214A GB378577A GB378577A GB1527214A GB 1527214 A GB1527214 A GB 1527214A GB 378577 A GB378577 A GB 378577A GB 378577 A GB378577 A GB 378577A GB 1527214 A GB1527214 A GB 1527214A
Authority
GB
United Kingdom
Prior art keywords
pressure
valve
pulley
transmission
driven
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
GB378577A
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.)
Bosch Transmission Technology BV
Original Assignee
Van Doornes Transmissie BV
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 Van Doornes Transmissie BV filed Critical Van Doornes Transmissie BV
Priority to GB378577A priority Critical patent/GB1527214A/en
Publication of GB1527214A publication Critical patent/GB1527214A/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
    • 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
    • F16H61/66—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 continuously variable gearings
    • F16H61/662—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 continuously variable gearings with endless flexible members

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Transmission Device (AREA)

Abstract

1527214 Expanding-pulley gearing; clutch control VAN DOORNE'S TRANSMISSIE BV 31 Jan 1977 [9 Feb 1976] 03785/77 Headings F2D and F2L In an expanding-pulley gearing having a driving pulley 1 and a driven pulley 2, hydraulic fluid supplied by a pump 20 driven by the drive motor setting the transmission ratio, the pulley 1 is driven from the drive motor through a fluid-actuated clutch 9 which is only engaged when sufficient fluid pressure is present for the transmission to function. The pump 20 supplies pressure to a chamber 8 in pulley 1 through a control valve 22 operated by a lever 24. A follow-up linkage is provided between valve 22 and the movable flange of driven pulley 2. The pressure required to operate the transmission is set by a relief valve 31, the pressure acting against a spring 34 whose bias is varied with transmission ratio by a link 27. Once the required pressure is reached fluid flows through valve 31 to a line 35 for lubrication and to a line 36 to open a valve 37 and allow fluid pressure to be supplied to engage clutch 9. A pressure reducing valve 39 sets the clutchengaging pressure. The transmission may be controlled manually, by movement of lever 24, or by a system comparing a desired value with a measured value (e.g. output shaft speed). The valve 22 may also be controlled electromagnetically, by an electronically calculated signal. The drive motor may be electric.
GB378577A 1977-01-31 1977-01-31 Infinitely variable transmissions Expired GB1527214A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB378577A GB1527214A (en) 1977-01-31 1977-01-31 Infinitely variable transmissions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB378577A GB1527214A (en) 1977-01-31 1977-01-31 Infinitely variable transmissions

Publications (1)

Publication Number Publication Date
GB1527214A true GB1527214A (en) 1978-10-04

Family

ID=9764882

Family Applications (1)

Application Number Title Priority Date Filing Date
GB378577A Expired GB1527214A (en) 1977-01-31 1977-01-31 Infinitely variable transmissions

Country Status (1)

Country Link
GB (1) GB1527214A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0004130A1 (en) * 1978-02-07 1979-09-19 P.I.V. Antrieb Werner Reimers GmbH & Co KG Continuously variable transmission mechanism
EP0083501A2 (en) * 1981-12-30 1983-07-13 The Gates Rubber Company Variable speed belt driven transmission system and method
EP0134721A1 (en) * 1983-09-09 1985-03-20 Fuji Jukogyo Kabushiki Kaisha Control system for an infinitely variable transmission
GB2172067A (en) * 1985-03-06 1986-09-10 Smiths Electric Vehicles Ltd Drive for a battery-powered vehicles
GB2321506A (en) * 1997-01-24 1998-07-29 Nissan Motor Arrangement of pulley working-fluid passage in a belt-type continuously-variable transmission

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0004130A1 (en) * 1978-02-07 1979-09-19 P.I.V. Antrieb Werner Reimers GmbH & Co KG Continuously variable transmission mechanism
EP0083501A2 (en) * 1981-12-30 1983-07-13 The Gates Rubber Company Variable speed belt driven transmission system and method
EP0083501A3 (en) * 1981-12-30 1985-01-16 The Gates Rubber Company Variable speed belt driven transmission system and method
EP0134721A1 (en) * 1983-09-09 1985-03-20 Fuji Jukogyo Kabushiki Kaisha Control system for an infinitely variable transmission
GB2172067A (en) * 1985-03-06 1986-09-10 Smiths Electric Vehicles Ltd Drive for a battery-powered vehicles
GB2321506A (en) * 1997-01-24 1998-07-29 Nissan Motor Arrangement of pulley working-fluid passage in a belt-type continuously-variable transmission
GB2321506B (en) * 1997-01-24 1999-03-17 Nissan Motor Arrangement of pulley working fluid passage in a belt-type continuously variable transmission
US5941787A (en) * 1997-01-24 1999-08-24 Nissan Motor Co., Ltd Arrangement of pulley working fluid passage in a belt-type continuously variable transmission
DE19802104B4 (en) * 1997-01-24 2012-11-08 Nissan Motor Co., Ltd. Infinitely adjustable belt transmission

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 19970130