Differential speed-sensitive and torque-sensitive limited slip c

Details Differential speed-sensitive and torque-sensitive limited slip c Differential speed-sensitive and torque-sensitive limited slip c

1998-07-13

1999-08-17

Ta, Khoi Q.

Planetary gear transmission systems or components

Fluid drive or control of planetary gearing

Control of differential planetary gearing

475 90, 475233, F16H 4826

Patent

active

059385561

ABSTRACT:
A limited slip differential gear mechanism, particularly for use with automotive vehicle axles, comprising differential side gears connected drivably to each of two driving axles for the vehicle. 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 to 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 has one pump member connected to the carrier and another connected to one of the axle shafts. The hydrostatic pump creates a differential speed-sensitive bias which complements the torque-sensitive bias developed by the ramps.

REFERENCES:
patent: 2949792 (1960-08-01), Smith
patent: 3724289 (1973-04-01), Kennicutt
patent: 5059160 (1991-10-01), Raniero
patent: 5299986 (1994-04-01), Fabris et al.
patent: 5310388 (1994-05-01), Okcuoglu et al.
patent: 5536215 (1996-07-01), Shaffer et al.
patent: 5595214 (1997-01-01), Shaffer et al.
patent: 5611746 (1997-03-01), Shaffer

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