Title: Simulation research on braking performance of hydrodynamic torque converter and retarder based on automatic shifting rules

Authors: Yue Ma, Quan Min Zhu, Alan Winfield, Qingdong Yan

Addresses: School of Mechanical Engineering, Beijing Institute of Technology, No. 5 South Zhongguancun Street, Haidian District, Beijing, 100081, China; Bristol Institute of Technology, University of the West England (UWE), Frenchay Campus, Coldharbour Lane, Bristol BS16 1QY, UK. ' Bristol Institute of Technology, University of the West of England (UWE), Frenchay Campus, Coldharbour Lane, Bristol BS16 1QY, UK. ' Bristol Institute of Technology, University of the West of England (UWE), Frenchay Campus, Coldharbour Lane, Bristol BS16 1QY, UK. ' School of Mechanical Engineering, Beijing Institute of Technology, No. 5 South Zhongguancun Street, Haidian District, Beijing, 100081, China

Abstract: In this paper, an integrated procedure is developed in modelling and simulation of vehicle braking performance from a number of critical factors, which include vehicle-ground, engine, hydrodynamic torque converter and retarder (TC-R) and gearbox. In the technique development, a new application mode of TC-R, automatic shifting rules, is considered as braking strength which is affected by the gear state in the gearbox. Then two schemas of transmission are carried out in Matlab/Simulink simulations to initially test the model credibility and efficiency. The results show that to improve the braking performance of TC-R, the gearbox should shift to lower gear state as early as possible and an increasing-speed box should be added between the engine and the TC-R to protect the engine and maintain the braking performance.

Keywords: simulation; braking performance; hydrodynamic torque; torque converter; torque retarder; automatic shifting rules; modelling; vehicle braking; torque converter-retarder.

DOI: 10.1504/IJMIC.2009.028879

International Journal of Modelling, Identification and Control, 2009 Vol.8 No.1, pp.80 - 87

Published online: 09 Oct 2009 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article