Hydraulic gain reduction circuit

Details Hydraulic gain reduction circuit Hydraulic gain reduction circuit

F - Mech Eng,Light,Heat,Weapons

16

D

103/12, 138/41.1

F16D 31/02 (2006.01) F04B 49/08 (2006.01) F16H 61/46 (2006.01)

Patent

CA 1286148

HYDRAULIC GAIN REDUCTION CIRCUIT Abstract of the Disclosure A gain reduction circuit is provided for use with a pressure- flow compensated variable displacement pump in a power-on-demand hydraulic system. An orifice and a check valve are connected in parallel between a pressure-flow compensating valve and the control for the variable displacement pump. A second orifice is connected between the pump control and sump. A relief valve is connected in parallel with both orifices. The circuit operates to allow a quick increase in pump output, while damping variations in the pump control to prevent or minimize oscillation of the pump outlet pressure around the desired value. In alternative embodiments, the check valve may be omitted if larger orifices are used, or the check valve may be provided and the second orifice omitted.

568481

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