Patent ID: 7318629

Claim:
A turn control system for a vehicle having four wheels and a steering wheel that controls the steering of two of the wheels, the system comprising: a brake system having four brakes with each of said brakes capable of applying an individual brake torque to a respective one of said four wheels; a steering wheel angle sensor for sensing an angle of rotation of said steering wheel; an acceleration sensing device for sensing an acceleration demand; a wheel speed sensing device for sensing a wheel speed for each of the four wheels; a turn control activation switch for enabling said turn control system and for shifting a vehicle transmission to one of a low or reverse operating gear; and a brake control module for calculating a target vehicle speed in response to said acceleration demand; a vehicle turning geometry in response to an angle of the steering wheel; and target wheel speeds for each of said wheels in response to said target vehicle speed and said vehicle turning geometry; and for generating a braking torque command signal for modulating said brake torque on said four brakes and generating an engine torque command signal for modulating an engine torque for producing said target vehicle speed, and applying a respective additional braking torque to at least one of the brakes for reducing said vehicle turning radius while maintaining said vehicle target speed.