Control system for variable displacement pumps

Details Control system for variable displacement pumps Control system for variable displacement pumps

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F04B 1/30 (2006.01) F04B 1/32 (2006.01) F04B 49/00 (2006.01)

Patent

CA 1060707

ABSTRACT OF THE DISCLOSURE In a hydraulic system having a plurality of variable displacement pumps driven by a prime mover, each pump has a variable ratio input device connected to a load sensing means. Each variable ratio input device automatically reduces the displacement of its respective pump by the same proportion when the prime mover is overloaded irrespective of the displacement setting of the pump and automatically increases the displacement of its pump by the same propor- tion up to the set displacement when the prime mover is not overloaded.

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