Patent ID: 8267219
Filing Date: 2012-09-18
Classification: B60K,B62D

Abstract:
1. A steering system for a vehicle incorporated with a rear drive electric motor for driving a pair of rear wheels that can function as a regenerative brake for the rear wheels, comprising: a steering mechanism for steering front wheels of the vehicle; a power steering assist unit configured to assist a manual effort to steer the front wheels; and a steering torque control unit configured to reduce a steering assist torque provided by the power steering assist unit when the rear drive electric motor is providing a regenerative braking, wherein the steering torque control unit includes an assist torque setting unit for setting an assist torque that assists a steering effort and a reactive torque setting unit for setting a reactive torque that increases the steering effort, a final steering assist torque provided by the power steering assist unit being determined as a combination of the assist torque provided by the assist torque setting unit and the reactive torque provided by the reactive torque setting unit.