Analysis of torsional vibration in crankshaft system

摘要

An investigation of crankshaft torsional vibration characteristics has been made, more often based on the results of measurement made at the pulley, rather than on those obtained in relation to the pulley. The results of the measurement made at the pulley. However, include crankshaft torsion assuming that the crankshaft is elastic, as well as rotational speed changes due to cylinder pressure fluctuation assuming that the crankshaft is rigid. The author suggests that relative torsional amplitude should be used in evaluating torsional vibration characteristics, rather than torsional amplitude measured at the pulley.