Study of torsional damper optimum design : 1st Report, complex damping property and its decision of viscous damper

Abstract

There is the more needs for the improvement of the damper ability to control the crankshaft torsional vibration, because of the excited power increase of engine with the higher effective mean pressure. Here is the study about high viscosity type viscous damper. It has the complex damping property with damping and stiffening functions. The new method to decide these functions is proposed by using the map of resonant peak points distribution with the technique of the temperature compensation. The optimization study of viscous damper design can be done visually on this map.