| 摘要 |
<p>A traction control system for a four wheel drive vehicle includes means for generating signals, means for comparing signals, and means for transferring torque. Means for generating a first value corresponding to an average of a rotational speed of front wheels (54, 56), means for generating a second value corresponding to an average of a rotational speed of rear wheels (38, 40), means for comparing the first and second values, and means for generating a first signal corresponding to a difference between the first and second values, are provided. The first signal is used by means for transferring torque (16) to the secondary axle (22) if the rear wheels (38, 40) are rotating faster than the front wheels (54, 56). Also provided is means for generating a second signal corresponding to a difference in speed between a first axle shaft (50) and a second axle shaft (52) of the front axle. The second signal is used by means for transferring torque to the other of the front axle shafts if the one of the secondary axle shafts is rotating faster than the other of the front axle shafts.</p> |
