Load responsive system pump controls

Details Load responsive system pump controls Load responsive system pump controls

1977-09-23

1979-02-20

Geoghegan, Edgar W.

Power plants

Pressure fluid source and motor

Condition responsive control of pump or motor displacement

60451, 60452, 60484, 60DIG2, F16H 3946

Patent

active

041399870

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 an electro-hydraulic control valve in response to an electrical signal proportional to motor load or motor load pressure to vary the pump displacement to maintain a controlled constant or variable pressure differential between the pump outlet pressure and motor load pressure or to vary the pressure differential between pump outlet pressure and motor load pressure in response to a signal from a computing device. 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: 3744243 (1973-07-01), Faisandier
patent: 3858393 (1975-01-01), Budzich
patent: 3890783 (1975-06-01), Allen et al.
patent: 3984979 (1976-10-01), Budzich

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