| 摘要 |
A differential gear mechanism of the limited slip type including a clutch pack (35) operable to retard rotation between the side gears (21,23) and the gear case (11). The clutch pack may be loaded, to retard differentiating action by means of a retarding mechanism (33) including a first ball ramp actuator (43) operable to cause axial movement of a plurality of elongated engagement members (61). When the members (61) move axially, a cone clutch assembly (79) is engaged, which retards rotation of a ramp plate (73) of a second ball ramp actuator (71). It is the ramping action of the second ball ramp actuator (71) which applies a load to the clutch pack (35) to limit, or prevent, differentiation within the differential gearing.
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