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Pennese, Michele
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Modelling and Control of a Novel Clutchless Multiple-Speed Transmission for Electric Vehicles

Mecaprom SRL-Mauro Grandone, Alberto Lega, Michele Pennese
University of Salerno-Ludovica Malafronte, Cesare Pianese
  • Technical Paper
  • 2019-24-0063
Published 2019-09-09 by SAE International in United States
Conventional electric vehicles adopt either single-speed transmissions or direct drive architecture in order to reduce cost, losses and mass. However, the integration of optimized multiple-speed transmissions is considered as a feasible method to enhance EVs performances, (i.e. top speed, acceleration and grade climbing), improving powertrain efficiency, saving battery energy and reducing customer costs. Perfectly in line with these objectives, this paper presents a patented fully integrated electric traction system, as scalable solution for electrifying light duty passenger and commercial vehicles (1.5-4.2 tons), with a focus on minibuses (<20 seats). The adoption of high-speed motor coupled to multiple-speed transmission offers the possibility of a relevant efficiency improvement, a 50% volume reduction with respect to a traditional transmission, superior output torque and power density.The proposed clutchless four-speed transmission is specifically conceived and designed to have the good matching with the traction electric motor. Indeed, clutches and synchronizers are not required thanks to the small inertia of the traction motor and its fast regulation in both torque and speed mode (torque modulation process). Therefore, an advanced shifting control…
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Design of a Motorcycle Engine Control Unit Using an Integrated Control-Implementation Approach

DIEL, Università dell'Aquila-Maria D. Di Benedetto, Giovanni Girasole
Magneti Marelli Powertrain-Giovanni Gaviani, Claudio Grossi, Walter Nesci, Michele Pennese
  • Technical Paper
  • 2004-35-0132
Published 2004-04-19 by University of Salerno in Italy
The design of automotive control systems is becoming increasingly complex as the level of performance required by car manufactures grows continuously and the constraints on cost and development time imposed by the market become tighter. A successful design, without costly and time-consuming re-design cycles, can be achieved only by using an efficient design methodology that allows for component re-use and evaluation of platform requirements at the early stages of the design flow. In this paper, we illustrate the application of an integrated control-implementation design methodology, recently proposed by our group, to the development of the top few layers of abstraction in the design flow of an engine control system for motorcycles.