Title: Simulation and analysis of synchronisation and engagement on manual transmission gearbox

Authors: Yen-Chen Liu, Ching-Huan Tseng

Addresses: Department of Mechanical Engineering, National Chiao Tung University, Taiwan 30050, ROC. ' Department of Mechanical Engineering, National Chiao Tung University, Taiwan 30050, ROC

Abstract: This paper presents a dynamic simulation and analysis model of the synchroniser, which is mainly used to avoid the abnormal impact during shifting in a Manual Transmission (MT) gearbox. Because the complicated mechanism and random engagement of the synchroniser occur in a short time, it is difficult to realise the synchronisation process by experiment. Using ADAMS™, not only the entire shift process but also two minor phase modules, separate from the entire shift process, can all be constructed to realise the synchronised action and random meshing between the sleeve and the clutch gear. After verifying the results from the simulation model, the paper discusses the influence of cone surface abrasion on synchronisation and the random meshing process. The results described here can help to understand the synchronisation process as well as it provides a way for improving two major demands, vehicle operational comfort and the lifespan of the synchroniser in a MT gearbox.

Keywords: random engagement; synchronisation; Taguchi methods; transmission gearbox; vehicle design; manual transmission; simulation; gear shift; cone surface abrasion; random meshing; synchroniser; operational comfort.

DOI: 10.1504/IJVD.2007.012304

International Journal of Vehicle Design, 2007 Vol.43 No.1/2/3/4, pp.200 - 220

Published online: 04 Feb 2007 *

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