Engine valve actuator
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United States of America Patent
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-
Feb 14, 2006
Grant Date -
N/A
app pub date -
Oct 15, 2004
filing date -
Oct 15, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An engine valve actuator for an internal combustion engine is provided. The actuator includes a housing having an opening. An adjustment member is disposed in the housing and defines a fluid chamber having a chamber wall. A piston is also disposed in the opening. The piston defines a piston chamber and has a pressure surface, a protrusion extending from the pressure surface, and a groove disposed in the pressure surface surrounding the protrusion and in fluid communication with the piston chamber. A fluid passageway is adapted to controllably communicate pressurized fluid to the housing opening. A push rod is operatively engageable with the piston and is adapted to controllably actuate an engine valve of the engine.
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