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Steering drift and wheel movement during braking: static and dynamic measurements

By J. Klaps and Andrew J. Day


YesThis paper reports on an experimental investigation into braking-related steering drift in\ud motor vehicles, and follows on from a previous paper by the authors in which it was concluded that\ud braking can cause changes in wheel alignment that in turn affect the toe-steer characteristics of each\ud wheel and therefore the straight-line stability of the vehicle during braking. Changes in suspension\ud geometry during braking, their magnitude and the relationships between the braking forces and the\ud suspension geometry and compliance are further investigated in an experimental study of wheel\ud movement arising from compliance in the front suspension and the steering system of a passenger\ud car during braking. Using a kinematic and compliance (K&C) test rig, movement of the front wheels\ud and the suspension subframe, together with corresponding changes in suspension and steering\ud geometry under simulated braking conditions, have been measured and compared with dynamic\ud measurements of the centre points of the front wheels. The results have enabled the causes and effects\ud of steering drift during braking to be better understood in the design of front suspension systems for\ud vehicle stability during braking

Topics: Automotive, Steering Drift, Braking, Suspension, Design, Experiment
Year: 2005
OAI identifier:
Provided by: Bradford Scholars

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