| 摘要 |
<p>A controllable, multi-mode, bi-directional overrunning clutch assembly (58) and a shift system (60) adapted for use in a transfer case (16) for transferring drive torque from a primary output shaft (18) to a secondary output shaft (32) so as to establish a four-wheel drive mode. The clutch assembly (58) includes a first ring (118) journalled on a first rotary member (32), a second ring (124) fixed to a second rotary member (114), and a plurality of rollers (134) disposed in opposed cam tracks formed between the first and second rings (118, 124). The first ring (118) is split to define an actuation channel (125) between its end segments. A cam rod is moveable between positions engaged with and released from one or both end segments of the split first ring (118). The shift system (60) includes a mode fork (170) which controls movement of the cam rod for establishing four distinct operational modes. <IMAGE></p> |
