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AssigneesDelphi Technologies, Inc., General Motors Corporation
InventorsPaul A. Grougan, Kenneth D. Norman, Thomas C. Zebehazy, Scott P. Sherman, Karen A. Boswell, Steven D. Klein, Charles R. Worner
Estimating the term…
The above discussed and other drawbacks and deficiencies of the prior art are overcome or alleviated by an all-wheel steering system for a vehicle comprising a controller having a first input for receiving a signal from a hand wheel position sensor, a second input for receiving a signal from a vehicle speed sensor, and a third input for receiving a signal that varies depending upon whether a trailer is hitched to said vehicle. The controller generates an output for controlling a rear wheel steering actuator. The output varies as a function of the first, second, and third inputs such that when a trailer is hitched to said vehicle the out-of-phase rear steer amount at low speeds is reduced and the in-phase rear steering amount at high speeds is increased.
An all-wheel steering system for a vehicle, the steering system comprising a controller having a first input for receiving a signal from a hand wheel position sensor and a second input for receiving a signal from a vehicle speed sensor, said controller generating an output for controlling a rear wheel steering actuator, said output varying as a function of said first input, said second input, wherein, when said steering system is in a trailering mode, said output generates a rear wheel steering amount according to the formula:
A method of steering rear wheels of a vehicle, the method comprising controlling a rear wheel steering actuator by varying it as a function of a position of the hand wheel and a speed of the vehicle, such that when a trailer is hitched to said vehicle said rear wheels are steered according to the formula:
The method of 4 wherein rear wheels are steered according to the formula:
Dependencies are inferred from the claim text.