Title: Dynamic modelling and simulation of one- and three-mode electric variable transmissions

Authors: Dajun Zhang, Jie Chen, Michael R. Schmidt, Tony Hsieh

Addresses: Automobile Research and Development Center (ARDC), DaimlerChrysler Canada Inc., 3939 Rhodes Drive, Windsor, Ontario, Canada. ' Indiana University Purdue University Indianapolis (IUPUI), Department of Mechanical Engineering, 723 W. Michigan Street, Indianapolis, IN, USA. ' Allison Transmission Division of General Motors, Indianapolis, IN, USA. ' Senior Project Engineer, Allison Transmission, Division of General Motors Corporation, 4500 E. 10th Street, Indianapolis, IN, USA

Abstract: Dynamic models are created for evaluating electric variable transmissions (EVTs) that were invented by Allison Transmission Division of General Motors. The models are based on Kane|s equations. Performance of the transmissions was simulated using the models. Mechanical losses were considered. The capacities of the transmission output power and torque while the engine runs on the best fuel economy curve for a given one-mode or three-mode EVT are investigated, respectively. The operating behaviours of the mechanical and electric units (transmission, motors/generators) are also studied. The results show an effective way to evaluate EVT|s design concept.

Keywords: hybrid electric vehicles; electric variable transmissions; dynamic modelling; design; simulation.

DOI: 10.1504/IJVD.2004.004951

International Journal of Vehicle Design, 2004 Vol.35 No.3, pp.241 - 259

Available online: 22 Jul 2004 *

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