Clutch with magneto-rheological operator for transfer cases and

Details Clutch with magneto-rheological operator for transfer cases and Clutch with magneto-rheological operator for transfer cases and

1997-08-26

1999-06-29

Marmor, Charles A.

192 clutches and power-stop control

Clutches

Automatic

192 215, 192 847, 180247, 74665GE, F16D 27112, F16H 3706

Patent

active

059155132

ABSTRACT:
A multiple disc clutch pack includes a pilot magneto-rheological operator which controls operation of an associated ball ramp operator which, in turn, compresses a clutch pack to selectively transfer torque between and input member and an output member. The pilot operator includes an electromagnetic coil disposed proximate a magneto-rheological fluid contained within a chamber of a pilot clutch. Activation of the electromagnetic coil creates a magnetic flux which travels through the magneto-rheological fluid and couples the fluid clutch members, creating drag and relative rotation between members of the ball ramp operator. Such relative rotation of the ball ramp operator selectively compresses the clutch pack and transfer torque from the input member to the output member.

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