GB1041872A - An improved control device for a hydrostatic gear - Google Patents

An improved control device for a hydrostatic gear

Info

Publication number
GB1041872A
GB1041872A GB948263A GB948263A GB1041872A GB 1041872 A GB1041872 A GB 1041872A GB 948263 A GB948263 A GB 948263A GB 948263 A GB948263 A GB 948263A GB 1041872 A GB1041872 A GB 1041872A
Authority
GB
United Kingdom
Prior art keywords
pump
motor
valve
control circuit
reducing 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.)
Expired
Application number
GB948263A
Inventor
Martin Herter
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.)
Pohlig Heckel Bleichert Vereinigte Maschinenfabriken AG
Original Assignee
Pohlig Heckel Bleichert Vereinigte Maschinenfabriken AG
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 Pohlig Heckel Bleichert Vereinigte Maschinenfabriken AG filed Critical Pohlig Heckel Bleichert Vereinigte Maschinenfabriken AG
Publication of GB1041872A publication Critical patent/GB1041872A/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
    • F16H61/46—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
    • F16H61/4061—Control related to directional control valves, e.g. change-over valves, for crossing the feeding conduits
    • 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
    • F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
    • F16H61/423—Motor capacity control by fluid pressure control means

Landscapes

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

Abstract

1,041,872. Hydrostatic gear control. M. HERTER. March 11, 1963 [March 9, 1962], No. 9482/63. Heading F2D. An hydrostatic pump and motor variablespeed and reversing gear has an hydraulic control circuit in parallel with the main hydraulic circuit, the pressure in the control circuit for adjusting the pump and the motor being proportioned to the output torque from the motor, as determined by the pressure in the main circuit and being also independently adjustable by manual control. An electrically driven variable capacity pump 3 feeds a reversible motor 4 through a reversing valve 8 controlled by a manual reversing valve 11. A control circuit for the actuation of differential pump and motor adjusting units 21, 22 is fed from the pump output 5 through a variable restrictor 20, in parallel with a non-return valve 13, and is controlled by a pedal-operated reducing valve 34 and a second reducing valve 32. The capacity setting member 27 of the pump 3 is connected to a cam 36 which sets the reducing valve 32 in accordance with the pump output which is proportional to the transmitted torque. The cam 36 is so shaped to provide optimum acceleration of the vehicle without overloading the pump driving motor irrespective of the action of the driver's pedal 33.
GB948263A 1962-03-09 1963-03-11 An improved control device for a hydrostatic gear Expired GB1041872A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB66271A DE1186753B (en) 1962-03-09 1962-03-09 Control device for a hydrostatic speed change and reversing gear for motor vehicles

Publications (1)

Publication Number Publication Date
GB1041872A true GB1041872A (en) 1966-09-07

Family

ID=6975068

Family Applications (1)

Application Number Title Priority Date Filing Date
GB948263A Expired GB1041872A (en) 1962-03-09 1963-03-11 An improved control device for a hydrostatic gear

Country Status (2)

Country Link
DE (1) DE1186753B (en)
GB (1) GB1041872A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3934416A (en) * 1974-02-25 1976-01-27 Lebus International, Inc. Central hydraulic system for marine deck equipment
DE2505780C2 (en) * 1975-02-12 1986-03-06 Robert Bosch Gmbh, 7000 Stuttgart Device for regulating at least one adjustable pump
US4295539A (en) * 1979-12-05 1981-10-20 Parno Corporation Auxiliary drive system
US5042252A (en) * 1990-02-22 1991-08-27 Unipat Ag Neutral shifting mechanism for hydrostatic transmission

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1022101B (en) * 1955-03-25 1958-01-02 Austin Motor Co Ltd Hydraulic drive transmission, especially for motor vehicles
FR1190518A (en) * 1955-11-19 1959-10-13 Von Roll Ag Automatic control device for hydrostatic transmission mechanism of vehicles
DE1106574B (en) * 1956-07-23 1961-05-10 Von Roll Ag Control device with automatic regulation of hydrostatic power transmission with a pump and a fluid motor
DE1107523B (en) * 1956-12-21 1961-05-25 Dowty Hydraulic Units Ltd Adjustable hydrostatic transmission, especially for motor vehicles
AT211684B (en) * 1957-01-07 1960-10-25 Von Roll Ag Hydraulic control device for hydrostatic transmissions in caterpillar or wheeled vehicles

Also Published As

Publication number Publication date
DE1186753B (en) 1965-02-04

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