FR2258571A1 - Hydraulic transmission attached directly to vehicle wheel - changes speed by varying number of pistons used - Google Patents

Hydraulic transmission attached directly to vehicle wheel - changes speed by varying number of pistons used

Info

Publication number
FR2258571A1
FR2258571A1 FR7402257A FR7402257A FR2258571A1 FR 2258571 A1 FR2258571 A1 FR 2258571A1 FR 7402257 A FR7402257 A FR 7402257A FR 7402257 A FR7402257 A FR 7402257A FR 2258571 A1 FR2258571 A1 FR 2258571A1
Authority
FR
France
Prior art keywords
motor
vehicle wheel
way valve
attached directly
hydraulic 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.)
Granted
Application number
FR7402257A
Other languages
French (fr)
Other versions
FR2258571B1 (en
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.)
Poclain SA
Original Assignee
Poclain SA
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 Poclain SA filed Critical Poclain SA
Priority to FR7402257A priority Critical patent/FR2258571A1/en
Publication of FR2258571A1 publication Critical patent/FR2258571A1/en
Application granted granted Critical
Publication of FR2258571B1 publication Critical patent/FR2258571B1/fr
Granted 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
    • 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

A variable delivery pump (8), controlled by regulator (39), feeds high pressure fluid to a motor (1) through a three way valve (9). A two way valve (6), with spring bias (38), allows full flow and turns the motor (1) slowly with high torque. This drives the wheel attached to the output shaft (5). As the speed increases, the delivery from another pump (3) increases, passes through the pipes (12, 15) to the control side (14) of the two way valve (6). This changes over and a pump (7) feeds fluid to the control piston (2) of the motor (1). The cylinder capacity is reduced and the motor speed increases into the higher speed range.
FR7402257A 1974-01-23 1974-01-23 Hydraulic transmission attached directly to vehicle wheel - changes speed by varying number of pistons used Granted FR2258571A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7402257A FR2258571A1 (en) 1974-01-23 1974-01-23 Hydraulic transmission attached directly to vehicle wheel - changes speed by varying number of pistons used

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7402257A FR2258571A1 (en) 1974-01-23 1974-01-23 Hydraulic transmission attached directly to vehicle wheel - changes speed by varying number of pistons used

Publications (2)

Publication Number Publication Date
FR2258571A1 true FR2258571A1 (en) 1975-08-18
FR2258571B1 FR2258571B1 (en) 1977-06-10

Family

ID=9133873

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7402257A Granted FR2258571A1 (en) 1974-01-23 1974-01-23 Hydraulic transmission attached directly to vehicle wheel - changes speed by varying number of pistons used

Country Status (1)

Country Link
FR (1) FR2258571A1 (en)

Also Published As

Publication number Publication date
FR2258571B1 (en) 1977-06-10

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Legal Events

Date Code Title Description
ST Notification of lapse