Fabio Viotto

TL;DR: In this paper, the authors propose an electric powertrain layout for use in either fully electric vehicles or fully electric cars, which consists of a central electric motor drive, a single-speed transmission and a differential.

TL;DR: In this paper, the effects of downsizing the electric motor drive of a fully electric vehicle through the adoption of a multiple-speed transmission system were investigated using simulation framework in Matlab/Simulink.

TL;DR: In this article, a 2-speed transmission system specifically designed for electric axle applications is presented, which is characterized by a simple mechanical layout and the equations governing the overall system dynamics are presented.

TL;DR: In this paper, a four-wheel-drive electric vehicle layout consisting of one on-board electric drivetrain per axle is presented, which includes a simplified clutchless two-speed transmission system and an open differential to transmit the torque to the wheels.

TL;DR: In this article, the advantages due to the adoption of multi-speed transmission systems within fully electric vehicles are described, and the results show that there is a significant advantage in adopting a 2-speed transmissions system over the single-speed layout, and despite a reduction in motor losses, the typically lower efficiency characteristics of Continuously Variable Transmissions do not result in lower energy consumption for the four case study vehicles.