Method and a device for damping flow pulsations in hydrostatic h

Details Method and a device for damping flow pulsations in hydrostatic h Method and a device for damping flow pulsations in hydrostatic h

1992-09-01

1993-09-28

Gluck, Richard E.

Motors: expansible chamber type

Three or more cylinders arranged in parallel radial or...

Motive fluid bypass to or from assembly

F04B 120

Patent

active

052478696

ABSTRACT:
Each cylinder of a hydrostatic hydraulic machine of the displacement type is preliminarily pressurized after the inlet port of the cylinder has been exposed to the low pressure side of the machine and before the inlet port of the cylinder is exposed to the high pressure side of the machine. The preliminary pressurization is effected by use of a separate pressure chamber containing a pressurized fluid that is rapidly discharged into the inlet port of each cylinder before the cylinder inlet port is exposed to the high pressure side of the machine. The separate pressure chamber is recharged from the high pressure side of the machine at a rate that is slower than the rate at which pressurized fluid is discharged from the chamber into the inlet port of a cylinder.

REFERENCES:
patent: 3199461 (1965-08-01), Wolf
patent: 3362342 (1968-01-01), Flint et al.
patent: 3999466 (1976-12-01), Aschke
patent: 4096786 (1978-06-01), Schauer
patent: 4791858 (1988-12-01), Nonenmacher

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