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research
Investigation of synchroniser engagement in dual clutch transmission equipped powertrains
Authors
PD Walker
N Zhang
Publication date
12 March 2012
Publisher
'Elsevier BV'
Doi
Cite
Abstract
Transient response of a dual clutch transmission (DCT) powertrain to synchroniser mechanism engagements is investigated using a lumped inertia model of the powertrain. Original research integrates lumped inertia powertrain models for the DCT with a detailed synchroniser mechanism model and two separate engine models, comprising of a mean torque model and a harmonic torque model, using torque derived from piston firing. Simulations are used to investigate the synchroniser mechanism engagement process in a previously unscrutinised operating environment. Simulations are performed using both engine torque models, with the mean torque model demonstrates the highly nonlinear nature of synchroniser mechanism engagement, and the powertrain response to the engagement process. Through the introduction of harmonic engine torques, additional excitation is present in the mechanism during engagement, and increased vibration of the synchroniser sleeve results. The impact of vibrations is particularly important to the increased wear of indexing chamfer contact surfaces. © 2011 Elsevier Ltd All rights reserved
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OPUS - University of Technology Sydney
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Last time updated on 13/02/2017