FR2438779A1 - Hydrostatic transmission for maintenance truck - has piloted valve pump control with secondary pilot shunting diaphragm stabiliser when braking - Google Patents

Hydrostatic transmission for maintenance truck - has piloted valve pump control with secondary pilot shunting diaphragm stabiliser when braking

Info

Publication number
FR2438779A1
FR2438779A1 FR7829303A FR7829303A FR2438779A1 FR 2438779 A1 FR2438779 A1 FR 2438779A1 FR 7829303 A FR7829303 A FR 7829303A FR 7829303 A FR7829303 A FR 7829303A FR 2438779 A1 FR2438779 A1 FR 2438779A1
Authority
FR
France
Prior art keywords
diaphragm
stabiliser
shunting
braking
valve
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
FR7829303A
Other languages
French (fr)
Other versions
FR2438779B1 (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.)
FENWICK MANUTENTION STE INDLE
Original Assignee
FENWICK MANUTENTION STE INDLE
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 FENWICK MANUTENTION STE INDLE filed Critical FENWICK MANUTENTION STE INDLE
Priority to FR7829303A priority Critical patent/FR2438779A1/en
Publication of FR2438779A1 publication Critical patent/FR2438779A1/en
Application granted granted Critical
Publication of FR2438779B1 publication Critical patent/FR2438779B1/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/18—Conjoint control of vehicle sub-units of different type or different function including control of braking systems
    • 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
    • F16H61/4157—Control of braking, e.g. preventing pump over-speeding when motor acts as a pump

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Control Of Fluid Gearings (AREA)

Abstract

The hydrostatic transmission incorporates a variable capacity primary pump of which the capacity is controlled by a servo-valve (1). It uses pilot pressure to actuate the servo-valve. A pilot circuit (2) incorporates the servo-valve upstream of a diaphragm stabiliser (3). It also incorporates an auxiliary valve (4) in parallel with the diaphragm, to establish the pilot pressure. External piloting (5) is used on the auxiliary valve so that shunting of the diaphragm occurs during vehicle braking. The transmission gives progressive motor responses during braking and other operations. The auxiliary valve is piloted by the pressure of the fluid in the vehicle braking system.
FR7829303A 1978-10-13 1978-10-13 Hydrostatic transmission for maintenance truck - has piloted valve pump control with secondary pilot shunting diaphragm stabiliser when braking Granted FR2438779A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7829303A FR2438779A1 (en) 1978-10-13 1978-10-13 Hydrostatic transmission for maintenance truck - has piloted valve pump control with secondary pilot shunting diaphragm stabiliser when braking

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7829303A FR2438779A1 (en) 1978-10-13 1978-10-13 Hydrostatic transmission for maintenance truck - has piloted valve pump control with secondary pilot shunting diaphragm stabiliser when braking

Publications (2)

Publication Number Publication Date
FR2438779A1 true FR2438779A1 (en) 1980-05-09
FR2438779B1 FR2438779B1 (en) 1984-12-07

Family

ID=9213728

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7829303A Granted FR2438779A1 (en) 1978-10-13 1978-10-13 Hydrostatic transmission for maintenance truck - has piloted valve pump control with secondary pilot shunting diaphragm stabiliser when braking

Country Status (1)

Country Link
FR (1) FR2438779A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2575118A1 (en) * 1984-12-24 1986-06-27 Linde Ag CONTROL DEVICE FOR A MOTOR VEHICLE, IN PARTICULAR FOR A FORKLIFT
EP0234109A2 (en) * 1985-12-13 1987-09-02 Sauer, Inc. Summing pressure compensation control
FR2610877A1 (en) * 1987-02-12 1988-08-19 Linde Ag DEVICE FOR CONTROLLING A MOTOR VEHICLE EQUIPPED WITH A HYDROSTATIC TRANSMISSION AND AN ENERGY RECOVERY BRAKE

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2127506A1 (en) * 1971-06-03 1972-12-28 Klöckner-Humboldt-Deutz AG, 5000 Köln Hydrostatic drive unit for a motor vehicle
US3986358A (en) * 1974-10-19 1976-10-19 Klockner-Humboldt-Deutz Aktiengesellschaft Hydrostatic vehicle transmission

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2127506A1 (en) * 1971-06-03 1972-12-28 Klöckner-Humboldt-Deutz AG, 5000 Köln Hydrostatic drive unit for a motor vehicle
US3986358A (en) * 1974-10-19 1976-10-19 Klockner-Humboldt-Deutz Aktiengesellschaft Hydrostatic vehicle transmission

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2575118A1 (en) * 1984-12-24 1986-06-27 Linde Ag CONTROL DEVICE FOR A MOTOR VEHICLE, IN PARTICULAR FOR A FORKLIFT
EP0234109A2 (en) * 1985-12-13 1987-09-02 Sauer, Inc. Summing pressure compensation control
EP0234109A3 (en) * 1985-12-13 1989-02-08 Sundstrand Sauer Summing pressure compensation control
FR2610877A1 (en) * 1987-02-12 1988-08-19 Linde Ag DEVICE FOR CONTROLLING A MOTOR VEHICLE EQUIPPED WITH A HYDROSTATIC TRANSMISSION AND AN ENERGY RECOVERY BRAKE

Also Published As

Publication number Publication date
FR2438779B1 (en) 1984-12-07

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Legal Events

Date Code Title Description
ST Notification of lapse