Patent ID: 6220385
Filing Date: 2001-04-24
Classification: B60G,B62D

Abstract:
A steering system for a non-trackbound motor vehicle having steered vehicle wheels which are operationally connected in normal operation to a steering device comprising an electronic control arrangement configured to continuously check for correct functioning and controls a steering actuator and being connected with the steered vehicle wheels to a steering angle desired-value sensor actuated by the steering device as well as to a steering angle actual-value sensor actuated by the steered vehicle wheels, and being further configured to control a hand-force setter connected to the steering device to simulate a steering resistance by being operatively connected to a hand-force desired-value sensor detecting transmitted forces between the steering actuator and steered vehicle wheels, and to a hand-force actual-value sensor detecting transmitted forces between the hand-force setter and steering device, whereby with abnormal or emergency operation, the steered vehicle wheels are mechanically positively coupled to the steering device for steering adjustment by closure of a normally open clutch in a mechanical steering gear arrangement arranged between the steering device and steered vehicle wheels, and a sensor system is operatively arranged to detect an open state of the clutch.