Left/right drive torque adjusting apparatus for vehicle and left

Details Left/right drive torque adjusting apparatus for vehicle and left Left/right drive torque adjusting apparatus for vehicle and left

1993-06-15

1995-10-10

Wright, Dirk

Planetary gear transmission systems or components

Fluid drive or control of planetary gearing

Control of differential planetary gearing

180197, F16H 4804

Patent

active

054566410

ABSTRACT:
Between an input shaft and each of left-wheel and right-wheel axles, a speed change mechanism and a multi-plate clutch mechanism are interposed so that a rotational speed of the axle is changed (for example, increased) by a speed change mechanism and is transmitted to a hollow axle. The multi-plate clutch mechanism is interposed between the hollow axle and a differential case. By coupling the multi-plate clutch mechanism, drive torque is fed from one of the differential case and the hollow axle, said one member rotating at a higher speed, to the other member rotating at a lower speed. When the ratio .alpha. of a rotational speed of the left wheel to that of the right wheel becomes greater than the predetermined value .alpha..sub.0 and transfer of torque in a desired direction is no longer feasible. The multi-plate clutch mechanisms are hence made free. The multi-plate clutch mechanisms are controlled by a control unit.

REFERENCES:
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patent: 5056614 (1991-10-01), Tokushima et al.
patent: 5168953 (1992-12-01), Naito
Copy of SAE Paper No. 905078, "Stability and Controllability Augmentation by Adaptive Control of Steering and Differential in Trucks and Buses" by Momiyama & Iwamoto of Hino Motors and M. Nagai of Tokyo University of Agriculture and Technology, pp. 595-602 (no date listed).

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