GB920473A - Improvements in hydraulic power transmission systems - Google Patents

Improvements in hydraulic power transmission systems

Info

Publication number
GB920473A
GB920473A GB21337/61A GB2133761A GB920473A GB 920473 A GB920473 A GB 920473A GB 21337/61 A GB21337/61 A GB 21337/61A GB 2133761 A GB2133761 A GB 2133761A GB 920473 A GB920473 A GB 920473A
Authority
GB
United Kingdom
Prior art keywords
motor
fan
pump
line
cooling system
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
GB21337/61A
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.)
COLETTE SCHOLER-VOITH
Original Assignee
COLETTE SCHOLER-VOITH
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 COLETTE SCHOLER-VOITH filed Critical COLETTE SCHOLER-VOITH
Publication of GB920473A publication Critical patent/GB920473A/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
    • F16H61/431—Pump capacity control by electro-hydraulic control means, e.g. using solenoid valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/02—Controlling of coolant flow the coolant being cooling-air
    • F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
    • F01P7/044—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio using hydraulic drives
    • 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
    • F16H61/4165—Control of cooling or lubricating
    • 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
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/74—Inputs being a function of engine parameters
    • F16H59/78—Temperature

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

920,473. Axial-flow fans. C. SCHULERVOITH, M. VOITH, H. W. SCHWEPPENHAUSER, and C. KNAPP, [trading as VOITHGETRIEBE KOMM. GES.]. June 13, 1961 [June 25, 1960; Oct. 29, 1960], No. 21337/61. Class 110 (1). [Also in Groups XXIV, XXVII and XXIX] A fan 5, Fig. 1, is driven through an hydraulic power transmission comprising an hydrostatic pump 3 coupled to an hydrostatic motor 4, and an arrangement which allows the output shaft of the transmission to run faster in the normal direction of rotation than the speed which corresponds to the reigning speed of operation of the input shaft of the system. The pump may be driven by belts 2 from the engine 1 of a locomotive and supplies fluid through a line 8 connected to the motor 4 which drives the fan 5 disposed adjacent a radiator 6 for the cooling system of the engine. In the event of the engine 1 slowing as a result of the locomotive climbing a gradient or halting, the inertia of the fan drives the motor 4 as a pump, vacuum in the line 8 which would slow the motor being prevented by fluid being drawn into the line 8 by the motor through a line 16 and a one-way valve 17 in a reservoir 7 receiving fluid discharged from the motor through a line 9. The pump can be tilted to vary its output by a unit 15 controlled by a temperature-responsive element 13 in the cooling system. The degree of the opening of the valve 17 is varied by links 18 connected to the pump and to a sleeve so that the amount of overrunning of the fan is controlled in accordance with the temperature of the cooling system. In another embodiment, a one-way valve 17<SP>1</SP> is disposed in a line 16<SP>1</SP> between the lines 8, 9. In a further embodiment, the motor 104, Fig. 3, is connected by a freewheel coupling 133 to the fan 105 to permit the fan to overrun the motor. A friction clutch 135, 136 is arranged in parallel with the coupling and is disengaged by fluid pressure from the unit 115 which is actuated by the temperatureresponsive element 113 so that, depending on the temperature in the cooling system, the fan may be directly connected to the motor or be able to overrun the motor. The freewheel coupling may be arranged on the input shaft of the pump.
GB21337/61A 1960-06-25 1961-06-13 Improvements in hydraulic power transmission systems Expired GB920473A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEV0018885 1960-06-25
DEV0019568 1960-10-29

Publications (1)

Publication Number Publication Date
GB920473A true GB920473A (en) 1963-03-06

Family

ID=26001455

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21337/61A Expired GB920473A (en) 1960-06-25 1961-06-13 Improvements in hydraulic power transmission systems

Country Status (3)

Country Link
BE (1) BE605342A (en)
FR (1) FR1293822A (en)
GB (1) GB920473A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3485315A (en) * 1967-08-30 1969-12-23 Harley E Bergren Hydrostatic transmission and controls therefor
JPS48101202U (en) * 1972-03-01 1973-11-28

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3485315A (en) * 1967-08-30 1969-12-23 Harley E Bergren Hydrostatic transmission and controls therefor
JPS48101202U (en) * 1972-03-01 1973-11-28

Also Published As

Publication number Publication date
FR1293822A (en) 1962-05-18
BE605342A (en) 1961-10-16

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