| 摘要 |
A tractor has an interaxle differential which transmits torque from an engin e driven transmission to a front axle and to a rear axle. A differential includes a planetary gear set coupled to a modulating clutch. The modulating clutch is coupled between a pair of the planetary gear elements, and is used to bring the front to rear speed differential within desired limits. A control system for controlling the clutch includes a steering angle sensor, a front wheel speed sensor and a rear wheel speed sensor. From these sensors t he control system determines a desired maximum speed difference between the front and rear wheels, and controls the differential to keep the front to rear speed ratio within t he desired limit.
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