| 摘要 |
A hydraulic coupling for use in the drivetrain of an automotive vehicle and responsive to differences in rotation between a rotatively driven casing journaled in a rotary insert in a fixed housing and a rotatively driven member is provided with a friction clutch actuated by a piston responding to fluid pressure generated in a pressure chamber by a pump in response to differences in rotation, the pressure being controllable by a proportional valve mounted on the housing and connected to the pressure chamber by a conduit extending through the rotary insert. The proportional valve may be controlled by signals representative of vehicular operational conditions and ensures quick and complete disengagement of the clutch.
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