| 摘要 |
A viscous coupling includes an input and an output member which define a shear space therebetween. Viscous fluid in the shear space operates to transmit torque between the input and output members. When torque is transmitted between the input and output members, heat is generated. One of the members has a cooling medium chamber to receive a cooling medium from a cooling medium conduit. The conduit is positioned substantially in alignment with the rotational axis of the input and output members. The cooling medium gravitates toward the outer peripheral surfaces of the cooling medium chamber and vaporizes upon application of sufficient heat thereto. The vapor gravitates toward the rotational axis of the members and is subsequently cooled.
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