Patent ID: 6498975
Filing Date: 2002-12-24
Classification: B60K,B60W

Abstract:
A system for controlling a transfer case which is operatively disposed within a four-wheel drive vehicle which is operated at a certain speed and which is of the type having a steering wheel and a primary and a secondary driveshaft, said transfer case being effective to selectively transfer torque between said primary and secondary driveshafts, said system comprising:at least one sensor which senses an angle in which said steering wheel is positioned and which generates at least one signal representing said sensed angle; and a controller which is communicatively coupled to said transfer case and to said sensor, which receives said at least one signal, and which utilizes said at least one signal to selectively generate an output signal having a minimum duty cycle value and which is based upon said sensed angle and said certain speed of said vehicle and which is effective to selectively control said torque which is transferred to said primary and secondary driveshafts effective to preemptively prevent slip from occurring as the vehicle is traveling without turning.