关键词: 双质量飞轮, 扭转特性, 整车试验, 多工况

Abstract: This paper studied the torsional vibration performance of dual mass flywheel under different conditions of automobile vehicle. Firstly, the influence of torsion angle on the static torsional stiffness of dual mass flywheel was analyzed. Secondly, the bench test of the dual mass flywheel sample was carried out to verify the validity of the theory. Finally, the road test of the dual mass flywheel was carried out to obtain the torsional vibration damping performance of the dual mass flywheel in the transmission system under different conditions. The test results show that the dual mass flywheel has obvious damped effects on torsional vibration of the transmission system under various operating conditions. Under steady-state conditions (idle, uniform speed), the torsional vibration of the engine is small, and the torsional vibration attenuation of the dual mass flywheel is about 50%; Under the unsteady condition (accelerating and decelerating), the torsional vibration of the engine becomes larger, and the torsional vibration attenuation performance of the dual mass flywheel is also improved. The torsional vibration attenuation is about 80%.

Key words: Dual mass flywheel, Torsion characteristic, Vehicle experiment, Multi-conditions