Study on the effect of vibration characteristics of automotive tire on tire/road noise

(Comparison of sound characteristics of tire/road noise by two types of automotive tire)

Abstract

As noise of automotive, there are the noise of engine, the noise of power train, the noise of intake and exhaust systems, tire/road noise, and so on. In recent years, the number of hybrid vehicles and electric vehicles which the noise of engine, power train and intake and exhaust system is small is increased. As a result, the contribution of tire/road noise becomes relatively large in the noise of automotive. The source of tire/road noise is such as Pattern groove resonance sound, excitation sound due to uneven road surface. It is considered to noise in the low frequency band caused by tire vibration from road surface input are influenced by vibration characteristics of tires. For that reason, it is important to predict tire vibration during rolling and vibration characteristics of tires. In this study, sound characteristics of automotive tire were investigated by rolling experiments. Using two types of automotive tire and sound characteristics of tire/road noise were compared.