The vibration models of a automobile belt drive system contains of two pulley

the belt and one-way clutch are established

by using numerical analysis method

the vibration characteristic of the belt drive system and the effect of one-way clutch on the belt drive system vibration characteristics are studied.The analysis results show that the input shaft and the pulley angular displacement

displacement and the clutch torque show cyclical changes

the one-way clutch can reduce the vibration of the input shaft

pulley and the clutch torque of transmission system

and change its motion form

the pulley and the input shaft and belt span resonance region are basically identical

but the pulley and the input shaft resonance region than the belt resonance region wide.