| 摘要 |
A flow amplifying poppet valve is useful in hydraulic circuits requiring low leakage when in a loaded condition. Undesirable pressure fluctuations effect the stability of the poppet. Tilting of the poppet valve within the bore increases friction that degrades repeatability. The subject invention provides a flow amplifying poppet valve that dampens valve oscillation caused by pressure fluctuations and provides for a constant guide length (53) to prevent poppet valve tilting in the bore. The flow amplifying poppet valve assembly (10) comprises a poppet valve (34) slidably disposed within a bore (14) that includes a poppet seat (22) for engaging the valve seat to meter the flow of fluid between the inlet (16) and the outlet (18). The poppet valve and bore have radially overlapping shoulders (50,28) movable axially toward and away from each other to define a pressure chamber (52) that accumulates fluid for dampening poppet valve oscillation. <IMAGE> |
