A Novel Seamless 2-Speed Transmission System for Electric Vehicles: Principles and Simulation Results

Aldo Sorniotti; Gabriele Loro Pilone; Fabio Viotto; Stefano Bertolotto; Mike Everitt; Rob Barnes; Ian Morrish

doi:10.4271/2011-37-0022

This article deals with a novel 2-speed transmission system specifically designed for electric axle applications. The design of this transmission permits seamless gearshifts and is characterized by a simple mechanical layout. The equations governing the overall system dynamics are presented in the paper. The principles of the control system for the seamless gearshifts achievable by the novel transmission prototype - currently under experimental testing at the University of Surrey and on a prototype vehicle - are analytically demonstrated and detailed through advanced simulation tools. The simulation results and sensitivity analyses for the main parameters affecting the overall system dynamics are presented and discussed.

Standards

SAE Mobilus®

Publications

News

Events

Professional Development

A World in Motion (PreK-12)

Participate with SAE

SAE Membership

Donate

A Novel Seamless 2-Speed Transmission System for Electric Vehicles: Principles and Simulation Results 2011-37-0022

SAE MOBILUS