Table of Contents
International Journal of Vehicular Technology
Volume 2015, Article ID 136437, 12 pages
Research Article

Power Flows and Efficiency of Output Compound e-CVT

Dipartimento di Meccanica, Matematica e Management, Politecnico di Bari, Viale Japigia 182, 70125 Bari, Italy

Received 9 April 2015; Revised 15 July 2015; Accepted 20 August 2015

Academic Editor: Shankar Subramanian

Copyright © 2015 Francesco Bottiglione and Giacomo Mantriota. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Hybridization is the most promising vehicular technology to get significant improvements of the vehicle efficiency and performance in the short-term. Mechanical transmissions for hybrid vehicles are very often multiple modes transmission, which permit improving the performance in different working conditions. In this context, optimal design and control of these transmissions are a key point to improve the performance of the vehicles, and mathematical models which supports the design can play an important role in this field. In this work, an approach for evaluating the performance of Output Compound Split e-CVT (electric Continuously Variable Transmission) in steady-state is proposed. This approach, in addition to a kinematic analysis of the device, leads to the calculation of the internal power circulation modes and the efficiency of the device in different working conditions.