Driver selectable steering ratios

Motor vehicles – Steering gear – With electric power assist

Reexamination Certificate

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Reexamination Certificate

active

07377356

ABSTRACT:
A steering system (10) for a vehicle including a steerable wheel (12) defining a steering angle (20), a powered actuator (14) controlling the steering angle (20) and a steering wheel (16) providing a driver input control angle. A ratio of the driver input control angle to the steering angle (20) defines a steering ratio. The steering system (10) also includes a controller (18) selectively varying the steering ratio that directs the powered actuator (14) to change the steering angle (20) along one of at least two steering ratio graphs, and a control (60) manually selectable by a driver of the vehicle that communicates with the controller18for selecting one of the steering ratio graphs. A first one of the graphs (50) varies as a function of the driver input control angle in a manner that is different than that of a second one of the graphs (52).

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patent: 03024764 (2003-03-01), None
patent: 2005028283 (2004-03-01), None

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