| 摘要 |
A temperature compensating fluid friction clutch is disclosed. The fluid friction clutch comprises a housing substantially filled with a viscous fluid, a shaft disposed within the housing, and mutually interengaging inner and outer plates connected to the shaft and housing for rotation about an axis within the housing. Spacers are located in the gaps between the plates, while the plates are axially displaceable so as to vary the size of the gaps. Temperature responsive elements are also provided to compensate for any reduction in the fluid viscosity when the temperature of the fluid rises. The temperature responsive elements, which may be in various forms, act to decrease the size of the gaps between the inner and outer plates when the temperature of the viscous fluid rises. In one embodiment, the temperature responsive elements comprise an expansion element connected to the inner and outer plates and which expands upon an increase in temperature. In another embodiment, the spacers comprise the temperature responsive elements. In this embodiment, the spacers are in the form of bimetallic conical rings which contract in an axial direction upon an increase in temperature.
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