Title: Fuel consumption of a vehicle with power split CVT system

Authors: Giacomo Mantriota

Addresses: Dipartimento di Ingegneria Meccanica e Gestionale, Politecnico di Bari, Viale Japigia, 182, 70126 Bari, Italy

Abstract: Continuously variable transmissions have made notable progress, especially in the automotive industry, in recent years. In this work, we study the performance of a mid passenger car provided with an original Power Split CVT (PS-CVT) system. The main advantage of the proposed solution is to improve the efficiency of the CVT by means of a power flow without recirculation using two separate phases of operation. By means of a simulation model we evaluate the vehicle|s fuel consumption with the hypothesis to consider the value of transmission ratio speed that minimises the specific fuel consumption. Furthermore the PS-CVT performance is compared with that of traditional CVT.

Keywords: CVT; transmission efficiency; IVT; mileage; power split; power transmission; continuously variable transmission; fuel consumption; power flow; simulation.

DOI: 10.1504/IJVD.2005.006598

International Journal of Vehicle Design, 2005 Vol.37 No.4, pp.327 - 342

Published online: 24 Mar 2005 *

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