| 摘要 |
In multiple driving axle vehicles, such as four wheel drive automotive vehicles, drive is transmitted to front and rear differentials respectively drivingly connected to front and rear pairs of road wheels, a controlled third or center differential drivingly connected to the front and rear differentials and acting as a free differential until one output of this differential rotates slower or faster a predetermined amount than the other output, at which time the control acts to operate a clutch to lock the center differential preventing any further increase in speed differences. The control is sensitive to the speed differences, percentagewise, of the outputs of the front and rear differentials, and acts to bias torque in the third differential according to the derivative of their speeds.
|
