Application of Self-Excited Vibration Prediction Technology of Powertrain Development

Abstract

In order to suppress self-excited vibration of multiplate wet clutch adopted as hybrid transmission launched onto the market this time, it was coped with by using self-excited vibration prediction technology of powertrain. Severe operation mode was first identified by grasping eigenvalue of drivetrain. Next, the dynamic frictional characteristics of facing materials and their methods of use have been grasped. The dynamic frictional characteristics of facing materials have been grasped using a dedicated torque transmission characteristic test apparatus, and self-excited vibration prediction model of FEM was used for understanding methods of use of the facing materials. In order to make it structure which has robustness against self-excited vibration using those results, contact pressure of the friction surfaces were rationalized. Moreover, it confirmed that self-excited vibration occur in presumable mode that self-excited vibration is the severest by using before countermeasure clutch.