| 摘要 |
A fluid coupling containing a magnetically responsive fluid ( 27, 76 ) is in series with a digital clutch ( 71 ). Disengagement of the clutch ( 71 ) ensures that during times of no torque transmission, the fluid ( 27 ) does not cause parasitic drag, and is not subject to degradation because of continual shear. Wear of the necessary fluid seals ( 28 ) is also reduced.
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