Research on Influence Mechanism of Tire Pressure on the Ride Comfort of Automobile

Abstract

Factors that affect vehicle vibration and noise are design, material, tire pressure, structure, road condition, etc. the influence of tire inflation pressure on vibration and noise of tire and whole automobile is studied. Through the experimental data and theoretical analysis show that the tire stiffness and the natural frequency increased with tire inflation pressure increase; changes of suspension and automobile vibration characteristics with the tire inflation pressure change; tire pressure has different influence on the pump noise; tire pressure has little effect on the tire noise level; tire damping performance decreased with the increase of tire pressure, increased automobile vibration feeling, reduce automobile ride comfort. Therefore, reasonable tire inflation pressure can not only reduce and improve automobile vibration and noise, but also improve automobile ride comfort.