Fluid handling – Systems – Multi-way valve unit
Patent
1991-09-30
1992-08-04
Michalsky, Gerald A.
Fluid handling
Systems
Multi-way valve unit
60443, 91361, 25112905, F15B 13044
Patent
active
051350319
ABSTRACT:
A rotary hydraulic machine which includes a housing having a shaft mounted for rotation within the housing about a shaft axis. A cylinder block is coupled to the shaft for co-rotation with the shaft within the housing and includes a plurality of cylinders disposed in a circumferential array parallel to and surrounding the shaft axis. A piston is disposed to reciprocate within each of the cylinders and is coupled to a yoke for determining displacement of the pistons within the cylinders. A valve plate is mounted on a valve block and includes kidney-shaped slots for registering with the cylinders as the cylinder block rotates, and thereby connecting the cylinders to pump input and output ports. A microprocessor-based controller is externally mounted on the pump valve block and includes internal memory having various remotely-selectable control programs prestored therein. Sensors responsive to pump operating conditions are connected to the pump control electronics, and include a first sensor responsive to yoke position, a pressure sensor responsive to pump output pressure and a speed sensor responsive to angular velocity of shaft rotation. All of the electronic components are mounted on the valve block.
REFERENCES:
patent: 4757747 (1988-07-01), Blatter et al.
Burgess Roy T.
Gunda Rajamouli
Herta Frank
Hodges Robert C.
Kessler James A.
Michalsky Gerald A.
Vickers Incorporated
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