GB1067557A - Improvements in or relating to automatic control apparatus for hydrostatic fan drives - Google Patents

Improvements in or relating to automatic control apparatus for hydrostatic fan drives

Info

Publication number
GB1067557A
GB1067557A GB371365A GB371365A GB1067557A GB 1067557 A GB1067557 A GB 1067557A GB 371365 A GB371365 A GB 371365A GB 371365 A GB371365 A GB 371365A GB 1067557 A GB1067557 A GB 1067557A
Authority
GB
United Kingdom
Prior art keywords
valve
pump
pressure
piston
thermostat
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
GB371365A
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.)
METALLWERK GLOCKERAU GmbH
Original Assignee
METALLWERK GLOCKERAU GmbH
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 METALLWERK GLOCKERAU GmbH filed Critical METALLWERK GLOCKERAU GmbH
Publication of GB1067557A publication Critical patent/GB1067557A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F16H61/46—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)
  • Control Of Fluid Gearings (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

1,067,557. Hydrostatic transmissions. METALLWERK GLOCKERAU G.m.b.H. Jan. 27, 1965 [Jan. 28, 1964], No. 3713/65. Heading F2D. An hydrostatic drive for an engine-cooling fan 3 includes a variable-capacity pump 1 and a fixed capacity motor 2, the pump setting being adjustable by a piston 4 actuated by a servo-valve 6 under the joint control of the pump delivery pressure and a thermostat 7. Pressure connections are made from the pump output line to the left-hand end of the valve cylinder and to the space between the lands of valve 6. The pressure connection to piston 4 is controlled by the right-hand land of valve 6, the exhaust connection being made through a restriction 10. A relief valve 9 is fitted in the pump delivery line. A spring 8 is fitted between valve 6 and thermostat 7, the valve being moved to the right against the spring if the pump pressure rises, to open communication to the piston 4 and thus adjust the pump setting to reduce output. A second embodiment includes a pressure-limiting valve 11 and pilot valve 12 to reduce pressure peaks in operation.
GB371365A 1964-01-28 1965-01-27 Improvements in or relating to automatic control apparatus for hydrostatic fan drives Expired GB1067557A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM59698A DE1254405B (en) 1964-01-28 1964-01-28 Automatic control device for hydrostatic fan drive

Publications (1)

Publication Number Publication Date
GB1067557A true GB1067557A (en) 1967-05-03

Family

ID=7309592

Family Applications (1)

Application Number Title Priority Date Filing Date
GB371365A Expired GB1067557A (en) 1964-01-28 1965-01-27 Improvements in or relating to automatic control apparatus for hydrostatic fan drives

Country Status (2)

Country Link
DE (1) DE1254405B (en)
GB (1) GB1067557A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1934448A1 (en) * 1968-12-03 1970-09-03 Rex Chainbelt Inc Impeller pump with variable volume
US4036432A (en) * 1975-11-03 1977-07-19 George Albert L Variable speed fan drive system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3118576A1 (en) * 1981-05-11 1982-12-02 Mannesmann Rexroth GmbH, 8770 Lohr CONTROL DEVICE FOR A PUMP
DE19601376A1 (en) * 1996-01-16 1997-07-17 Rexroth Mannesmann Gmbh Sensor circuit

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1269287A (en) * 1960-06-30 1961-08-11 Variable flow pump and motor controller

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1934448A1 (en) * 1968-12-03 1970-09-03 Rex Chainbelt Inc Impeller pump with variable volume
US4036432A (en) * 1975-11-03 1977-07-19 George Albert L Variable speed fan drive system

Also Published As

Publication number Publication date
DE1254405B (en) 1967-11-16

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