Control arrangement for at least two hydraulic loads fed by at l

Details Control arrangement for at least two hydraulic loads fed by at l Control arrangement for at least two hydraulic loads fed by at l

1986-12-19

1988-07-26

Cohan, Alan

Power plants

Pressure fluid source and motor

Having condition responsive control in a system of distinct...

60445, 60486, 91361, 91459, F15B 2100

Patent

active

047591838

ABSTRACT:
A pump supplies via in each case a directional valve with associated pressure balance fluid or pressure medium to a plurality of loads. When the pump power is not sufficient a proportional quantity reduction is achieved at all loads in that the control voltages of the control members for electrical actuation of the directional valves are supplied to a summation stage and the sum voltage is compared in a comparison stage with a limit value corresponding to the maximum pump displacement, whereupon when the limit value is exceeded a control signal is generated with which the stroke of the driven directional valves is reduced.

REFERENCES:
patent: 3968730 (1976-07-01), Lionet
patent: 4554991 (1985-11-01), Eden
patent: 4625622 (1986-12-01), Gunda
patent: 4672811 (1987-06-01), Yoshida

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