Controlled leakage hydraulic damper

Details Controlled leakage hydraulic damper Controlled leakage hydraulic damper

2005-05-24

2005-05-24

Jacyna, J. Casimer (Department: 3751)

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

C251S062000, C251S063000, C251S063500, C251S063600, C251S129100, C251S129180, C251S048000, C123S090110, C123S090120

Reexamination Certificate

active

06896236

ABSTRACT:
A hydraulic damper cylinder270is provided for an electromagnetic actuated internal combustion engine cylinder valve20. The damper includes a piston68slidably mounted within the damper cylinder270. The piston68bifurcates the cylinder270into a first control volume74and a second control volume76. The first and second control volumes are fluidly connected by an inboard flow path372. Along the extreme ends of travel, the flow path372is blocked by the piston68and damping occurs through fluid transfer through an outboard flow path374.

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