Title: Experimental study on effect of torsional vibration attenuation measures for driveline with DCT

Authors: Dong Guo; Wenyi Rao; Yi Zhou; Yizhou Xiong; Yi Zhou

Addresses: Key Laboratory of Advanced Manufacturing Technology for Automotive Parts, Ministry of Education, Chongqing University of Technology, Chongqing, China ' Key Laboratory of Advanced Manufacturing Technology for Automotive Parts, Ministry of Education, Chongqing University of Technology, Chongqing, China ' College of Mechanical and Vehicle Engineering, Chongqing University, Chongqing, China ' Key Laboratory of Advanced Manufacturing Technology for Automotive Parts, Ministry of Education, Chongqing University of Technology, Chongqing, China ' Key Laboratory of Advanced Manufacturing Technology for Automotive Parts, Ministry of Education, Chongqing University of Technology, Chongqing, China

Abstract: Interior noise and vibration have become key issues for vehicles with DCT, which has a low gear rattle noise threshold. Four types of torsional vibration attenuation measures, including clutch torsional damper, dual mass flywheel, clutch micro-slip control and centrifugal pendulum vibration absorber are adopted to the DCT driveline. A road test is conducted, and then angular acceleration of the primary flywheel and gearbox input shaft are measured under fourth gear acceleration condition. It is found that the torsional shock absorption performance of the original clutch torsional damper is the worst. The angular acceleration amplitude of the input shaft is greatly reduced by using dual-mass flywheel and clutch micro-slip control, respectively. Dual-mass flywheel with centrifugal pendulum vibration absorbers torsional shock absorption performance is the best, the input shaft angular acceleration is always less than 100 rad/s² when the input rotating speed is below 1,800 rpm.

Keywords: torsional vibration experimental; attenuation measures; clutch micro-slip control; centrifugal pendulum.

DOI: 10.1504/IJPT.2023.134730

International Journal of Powertrains, 2023 Vol.12 No.3, pp.210 - 226

Received: 07 Dec 2021
Received in revised form: 23 Jul 2022
Accepted: 23 Jul 2022
Published online: 09 Nov 2023 *

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