Resilient hydraulic actuator
Patent
·
OSTI ID:6406105
An electrically controlled hydraulically powered internal combustion engine valve actuator is described comprising: a valve actuator housing; a power piston having a pair of opposed primary working surfaces for receiving hydraulic fluid pressure for moving the piston within the housing back and forth along an axis; and first and second hydraulic fluid chambers comprising a pair of cavities within the housing of substantially the same relatively fixed volume the first chamber supplying pressurized fluid to one piston surface and the second chamber receiving fluid displaced by the other piston surface as the piston moves in one direction along the axis, the second chamber supplying pressurized fluid to the other piston surface and the first chamber receiving fluid displaced by the one piston surface as the piston moves in the opposite direction along the axis.
- Assignee:
- North American Philips Corp., New York, NY (United States)
- Patent Number(s):
- A; US 5221072
- Application Number:
- PPN: US 7-820470
- OSTI ID:
- 6406105
- Country of Publication:
- United States
- Language:
- English
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