Torsional Vibration Analysis of Six Speed MT Transmission and Driveline from Road to Lab

2017-01-1845

06/05/2017

Features
Event
Noise and Vibration Conference and Exhibition
Authors Abstract
Content
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.
Meta TagsDetails
DOI
https://doi.org/10.4271/2017-01-1845
Pages
10
Citation
Furlich, J., Blough, J., and Robinette, D., "Torsional Vibration Analysis of Six Speed MT Transmission and Driveline from Road to Lab," SAE Technical Paper 2017-01-1845, 2017, https://doi.org/10.4271/2017-01-1845.
Additional Details
Publisher
Published
Jun 5, 2017
Product Code
2017-01-1845
Content Type
Technical Paper
Language
English