DIFFERENTIAL SPEED-SENSITIVE AND TORQUE-SENSITIVE LIMITED SLIP COUPLING

摘要

A limited slip differential (10) with a hydrostatic pump (96). A pair of pressure plates splined to the carrier define a pair of opposed ramps. They are engaged by differential pinions carried by a pinion shaft. The pinions engage each of the two side gears. A friction clutch assembly is situated adjacent each side gear. The pressure plates transfer an axial component of the thrust force created on the ramp surfaces as torque is transmitted through the pinions and through each side gear of each of two axle shafts. Each friction clutch assembly includes friction disks carried by the side gears and by the carrier so that a bias torque is established as one axle shaft overspeeds the other. A hydrostatic pump (96) has one pump member connected to the carrier and another connected to one of the axle shafts. The hydrostatic pump (96) creates a differential speed-sensitive bias which complements the torque-sensitive bias developed by the ramps.