| 摘要 |
A magneto-rheological coupling (MRC) is provided having an input assembly operable to receive a torque input and an output member operable to selectively transmit torque to a driveshaft. A magneto-rheological fluid, or MRF, having a variable viscosity in response to a magnetic flux field is operable to vary the torque transmitted from the input assembly to the output member. At least one annular lip forming a magneto-rheological fluid retention pocket is provided on at least one of the input assembly and the output member of the MRC. The annular lip is operable to direct MRF away from a roller bearing, thereby reducing the likelihood of MRF fluid incursion within the roller bearing. Additionally, a labyrinth seal may be employed to provide additional protection to the bearing. The labyrinth seal may have an annular bushing disposed therein to reduce the clearances of the labyrinth seal.
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