Load responsive system pump controls

Details Load responsive system pump controls Load responsive system pump controls

1977-08-29

1979-01-23

Geoghegan, Edgar W.

Power plants

Pressure fluid source and motor

Condition responsive control of pump or motor displacement

60452, 60484, 60DIG2, F16H 3946

Patent

active

041353650

ABSTRACT:
A load responsive fluid power control system using servo type flow control valves and fluid motors supplied by a variable displacement pump. The pump displacement is regulated by a control valve in response to the motor load pressure to vary the pump displacement to maintain a constant preselectable ratio between the pump outlet pressure and motor load pressure and to vary the pressure differential between pump outlet pressure and motor load pressure with variation in magnitude of the load. The pump control also limits maximum and minimum system pressures.

REFERENCES:
patent: 3444689 (1969-05-01), Budzich
patent: 3455210 (1969-07-01), Allen
patent: 3470694 (1969-10-01), Budzich
patent: 3628330 (1971-12-01), Miller
patent: 3858393 (1975-01-01), Budzich
patent: 3890783 (1975-06-01), Allen et al.
patent: 3984979 (1976-10-01), Budzich

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