Vibration Transmissibility Analysis and Measurement of Automotive Clutch Spring Dampers

bility(진 동 전달률), Clutch Spring Damper(클러 치 스프 링 댐퍼) The input torque ripple induced by combustion engines is a significant source of NVH(noise, vi-bration and harshness) problem in automotive transmissions. Because this torque fluctuation is primar-ily transmitted to the input shaft of automotive powertrains(e.g., automatic transmissions) when the lock-up clutches are closed, a torsional damper with helical springs is generally inserted between en-gine and transmissions to isolate the input vibratory energy, which is essential for the passenger comfort. The torsional vibration isolator exhibits frequency ranges in which there is low vibration transmissibility. However, the isolation performance is currently evaluated through the static torsional spring characteristics. In this study, the transmissibility of torsional spring dampers, essential dynami