Stabilization of vertical road reactions on automobile wheels

Abstract

The issue of improving vehicle stability and ride smoothness when driving over periodic road irregularities is considered. Vehicle oscillations affect almost all of its main performance characteristics (stability, controllability, and ride comfort), as well as fuel consumption. Vehicle motion under wheel resonance conditions may be accompanied by a reduction in the vertical road reaction on the wheels and even their detachment from the road, which leads to decreased vehicle stability. Resonant oscillations of the body are characterized by significant linear and angular displacements of the body itself and the useful load of the vehicle (driver, passengers, cargo, etc.). Such displacements may cause dangerous traffic situations. Thus, unfavorable driving conditions arise in terms of vehicle stability and controllability, as well as ride smoothness, which determines the level of comfort. A new active safety system for the vehicle is proposed, which makes it possible to improve ride smoothness. The results of a study on the influence of the vertical road reaction stabilization system on vehicle ride smoothness are presented.