Host: The Japan Society of Mechanical Engineers
Name : Dynamics and Design Conference 2018
Date : August 28, 2018 - August 31, 2018
In the latest trend in engine technology, diesel engines and high-power engines, low cylinder engines are widely used. These engines contribute to strong torsional vibration within the powertrain systems. On the other hand, automatic transmission (AT) is required to use a lock-up clutch system which links engine and gear train directly from low engine rotation speed. Lock-up damper, torsion damper in torque converter is not sufficient to absorb the torsional vibration. Therefore, the centrifugal pendulum vibration absorber (CPVA) is developed to suppress the torsional vibration. The natural frequency of CPVA is proportional to the engine speed. Then it is expected to suppress torsional vibration in wide rotation range of the engine speed. However, the natural frequency of the CPVA varies due to the nonlinearity when the vibration amplitude of CPVA is large. In this study, the optimum path of the CPVA to suppress the torsional vibration is discussed.
