Hydrostatic machine

Details Hydrostatic machine Hydrostatic machine

1986-03-10

1988-04-12

Spruill, Robert L.

Power plants

Pressure fluid source and motor

Condition responsive control of pump or motor displacement

60459, 72 28, 72249, F15B 3104, B21B 3500

Patent

active

047365854

ABSTRACT:
An adjustable hydrostatic machine is connected to a pressure line with impressed system pressure. The pressure difference applied at the machine is set at a control valve so that the stroke volume of the machine in idling operation is set to an adjustment belonging to a predetermined load torque. In idling operation the machine is thus operated at large stroke volume with small pressure difference. If it is then necessary to furnish the load torque a switching valve is opened so that at the machine the full pressure difference is immediately applied, the machine can furnish the desired torque and the time loss necessary for setting the machine is eliminated.

REFERENCES:
patent: 2685276 (1954-08-01), Dyken
patent: 2999482 (1961-09-01), Bower
patent: 3693385 (1972-09-01), Fujino et al.
patent: 3762198 (1973-10-01), Bair
patent: 4014198 (1977-03-01), Herrmann
patent: 4116001 (1978-09-01), Orth
patent: 4134283 (1979-01-01), Noe 72 20
Energieeinsparung, Jan. 1983, entitled "Hydrostatische Fahrantriebe Mit Energiespeicherung, pp. 97-102.

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