Browse Publications Technical Papers 2004-01-1105
2004-03-08

Active Steering - The BMW Approach Towards Modern Steering Technology 2004-01-1105

For the first time, the BMW Active Steering system allows driver-independent steering intervention at the front axle with the mechanical link between the steering wheel and the front axle still in place.
The system is primarily comprised of a rack-and-pinion steering system, a double planetary gear and an electric actuator motor.
This new level of freedom enables continuous and situation-dependent variation of the steering ratio and therefore adaptation of the transmission behaviour between the steering wheel and the vehicle's reaction to the relevant driving situation. Comfort, steering effort, handling and directional stability have been extensively optimised as a result of this.
In addition, driver-independent steering intervention also guarantees vehicle stabilisation in critical driving situations.
As a world exclusive, the new Active Steering system will be available for the first time as an option in the new BMW 5 Series.

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