GB1194324A - Hydraulic Vehicle Transmission Systems. - Google Patents

Hydraulic Vehicle Transmission Systems.

Info

Publication number
GB1194324A
GB1194324A GB2814166A GB2814166A GB1194324A GB 1194324 A GB1194324 A GB 1194324A GB 2814166 A GB2814166 A GB 2814166A GB 2814166 A GB2814166 A GB 2814166A GB 1194324 A GB1194324 A GB 1194324A
Authority
GB
United Kingdom
Prior art keywords
lever
reverse
urges
displacement
pump displacement
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
GB2814166A
Inventor
Frank George Freeman
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.)
ZF International UK Ltd
Original Assignee
Lucas Industries Ltd
Joseph Lucas Industries 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 Lucas Industries Ltd, Joseph Lucas Industries Ltd filed Critical Lucas Industries Ltd
Priority to GB2814166A priority Critical patent/GB1194324A/en
Publication of GB1194324A publication Critical patent/GB1194324A/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
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
    • 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
    • F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
    • F16H61/438—Control of forward-reverse switching, e.g. control of the swash plate causing discharge in two directions

Landscapes

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

Abstract

1,194,324. Controlling hydraulic variable-ratio gears. JOSEPH LUCAS (INDUSTRIES) Ltd. 1 Sept., 1967 [23 June, 1966], No. 28141/66. Heading F2D. In a motor vehicle hydrostatic transmission, e.g. of the type described in Specification 1,117,785, including an engine-driven variable displacement swashplate pump driving a fixed displacement swashplate motor, a pump displacement control servo 9 is actuated in accordance with engine accelerator pedal 29 position and the pressure in the main fluid line from the pump to the motor. The input member of servo 9, movable leftwards and rightwards from a central neutral position to increase pump displacement from zero for forward and reverse drive respectively, is pivoted at 40 to an arcuate slotted lever 21 having a fixed pivot 22. Accelerator pedal 29 is connected via a push rod 28, a compression spring 26, and a link 24, to a lever 18 having a fixed pivot 23. A link 16, pivoted at 17 to the lever 18 and having a pin 19 engaging the slot 20 of lever 21, is positioned by a manual forward-neutral-reverse selector 11 so that the pin 19 engages one end of the slot 20, as shown, for forward drive, the other end for reverse, and the centre, with pin 19 and pivots 22, 17 in alignment, for neutral. A member 42 on link 16 engages a surface 43 of lever 21 at the neutral position to lock the lever 21. An arm 33 on lever 21 is engaged by plungers 34, 35 acted upon by fluid pressure in the supply and return lines respectively of the transmission. A spring 31 counteracts the effect of reversal o pressures during overrun,. During forward drive, depression of the pedal 29 urges lever 21 anticlockwise to increase pump displacement and supply line pressure on plunger 34 urges lever 21 clockwise. In reverse, pedal 29 depression urges lever 21 clockwise to increase pump displacement and supply line pressure on plunger 35 urges it anticlockwise. Pump displacement is limited in reverse. The lever system may be connected electrically to the servo 9.
GB2814166A 1966-06-23 1966-06-23 Hydraulic Vehicle Transmission Systems. Expired GB1194324A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2814166A GB1194324A (en) 1966-06-23 1966-06-23 Hydraulic Vehicle Transmission Systems.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2814166A GB1194324A (en) 1966-06-23 1966-06-23 Hydraulic Vehicle Transmission Systems.

Publications (1)

Publication Number Publication Date
GB1194324A true GB1194324A (en) 1970-06-10

Family

ID=10270908

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2814166A Expired GB1194324A (en) 1966-06-23 1966-06-23 Hydraulic Vehicle Transmission Systems.

Country Status (1)

Country Link
GB (1) GB1194324A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2575307A1 (en) * 1984-12-24 1986-06-27 Linde Ag CONTROL DEVICE FOR MOTOR EQUIPMENT, ESPECIALLY A FORKLIFT, WHOSE CONTROL PRESSURE IS CONTROLLED AT WILL
EP0432788A1 (en) * 1989-12-14 1991-06-19 Korsmeyer Trading Intern.Ltd. Control system for a combustion engine with a hydrostatic transmission

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2575307A1 (en) * 1984-12-24 1986-06-27 Linde Ag CONTROL DEVICE FOR MOTOR EQUIPMENT, ESPECIALLY A FORKLIFT, WHOSE CONTROL PRESSURE IS CONTROLLED AT WILL
EP0432788A1 (en) * 1989-12-14 1991-06-19 Korsmeyer Trading Intern.Ltd. Control system for a combustion engine with a hydrostatic transmission

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees