Title:
PRESSURE CONTROL VALVE FOR HYDRAULIC ACTUATION ASSEMBLY
Document Type and Number:
WIPO Patent Application WO2003083321
Kind Code:
A8
Abstract:
A pressure control valve assembly is disposed in the hydraulic flow path of a differential assembly connected to a passagaway leading to a limited slip device. The assembly includes a blind hole (1a), a groove (7b) partially intersecting the blind hole, a ball member (24) seated in the blind hole, and a spring (20) acting on the ball to bias the ball into the blind hole. At the intersection of the blind hole and groove, an area is formed to provide controlled leakage for the hydraulic fuild. As the hydraulic fluid flow increases, the hydraulic pressure of the fluid on the pressure side increases which increases the force on the ball acting against the spring. As the pressure increases further, the resultant forces on the ball deflect the spring to increase the bleed area and increase the fuild bled proportionally to the fluid pressure. Therefore, a pressure control mechanism is provided.
Inventors:
YOSHIOKA JUN (US)
Application Number:
PCT/US2003/002205
Publication Date:
January 22, 2004
Filing Date:
January 27, 2003
Export Citation:
Assignee:
DANA CORP (US)
YOSHIOKA JUN (US)
YOSHIOKA JUN (US)
International Classes:
F15B21/045; F16D25/12; F16D48/02; F16H48/22; F16K15/04; F16K17/04; G05D16/04; (IPC1-7): F16D48/02; F16D25/12; F15B21/04; F16K15/04
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