Torsional Vibration Analysis of Six Speed MT Transmission and Driveline from Road to Lab
Document Type
Conference Proceeding
Publication Date
6-5-2017
Department
Department of Mechanical Engineering-Engineering Mechanics
Abstract
When a manual transmission (MT) powertrain is subjected to high speeds and high torques, the vehicle driveshaft, and other components experience an increase in stored potential energy. When the engine and driveshaft are decoupled during an up or down shift, the potential energy is released causing clunk during the shift event. The customer desires a smooth shift thus reduction of clunk will improve experience and satisfaction. In this study, a six-speed MT, rear-wheel-drive (RWD) passenger vehicle was used to experimentally capture acoustic and vibration data during the clunk event. To replicate the in-situ results, additional data was collected and analyzed for powertrain component roll and pitch. A lumped parameter model of key powertrain components was created to replicate the clunk event and correlate with test data. The lumped parameter model was used to modify clutch tip-out parameters, which resulted in reduced prop shaft oscillations. By reducing the prop shaft oscillations the clunk phenomena can be reduced and customer satisfaction increased.
Publication Title
SAE Technical Papers
Recommended Citation
Furlich, J.,
Blough, J.,
&
Robinette, D.
(2017).
Torsional Vibration Analysis of Six Speed MT Transmission and Driveline from Road to Lab.
SAE Technical Papers,
2017-June(June).
http://doi.org/10.4271/2017-01-1845
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/2997
Publisher's Statement
Copyright © 2017 SAE International. Publisher’s version of record: https://doi.org/10.4271/2017-01-1845