Torque control of engine clutch to improve the driving quality of hybrid electric vehicles |
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Authors: | H S Hwang D H Yang H K Choi H S Kim S H Hwang |
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Institution: | (1) Department of Electrical and Computer Engineering, University of Michigan-Dearborn, 4901 Evergreen Rd., Dearborn, MI, USA |
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Abstract: | As a powertrain for hybrid electric vehicles (HEVs), the automatic transmission (AT) is not only convenient for the driver
but also reduces hybridization costs because the existing production line is used to produce the AT. However, it has low fuel
economy due to the torque converter. To overcome this disadvantage, this paper studies HEVs equipped an AT without a torque
converter. In this case, additional torque control is needed to prevent the driving quality from deteriorating. This paper
suggests three different torque control methods and develops a simulator for an HEV that can simulate the dynamic behaviors
of the HEV when the engine clutch is engaged. The HEV drive train is modeled with AMESim, and a controller model is developed
with MATLAB/Simulink. A co-simulation environment is established. By using the developed HEV simulator, simulations are conducted
to analyze the dynamic behaviors of the HEV according to the control methods. |
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Keywords: | |
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