Power transmission
Patent
·
OSTI ID:5433452
This paper describes a variable displacement rotary hydraulic machine. It comprises: a housing; a shaft mounted within the housing for rotation about a shaft axis; cylinder means having a cylinder cavity within the housing; piston means disposed in the cavity, one of the piston means and the cylinder means being coupled to the shaft; valve means including fluid inlet and outlet ports in the housing and means of selectively connecting the cavity to the fluid inlet and outlet ports; means coupled to one of the piston means and the cylinder means within the housing for varying displacement of the piston means within the cylinder cavity as the shaft rotates about the axis; microprocessor-based electronic control means mounted on the valve means and including means for receiving and storing electronic control signals from an external source, and means responsive to the control signals for controlling position of the displacement-varying means within the housing; and sensor means for sensing operating conditions of the machine and providing electronic sensor signals as functions thereof, including a first sensor coupled to the displacement-varying means within the housing and providing a corresponding first signal to the electronic control means, the valve means comprising a valve block, the housing including a case mounted on the valve block to form an internal cavity in which the shaft.
- Assignee:
- Vickers, Inc., Troy, MI (United States)
- Patent Number(s):
- US 5073091; A
- Application Number:
- PPN: US 7-412211
- OSTI ID:
- 5433452
- Country of Publication:
- United States
- Language:
- English
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