Operation and Performance of a Small Scooter with a Parallel-hybrid Drive-train

The paper presents an innovative drive-train for a small scooter, taking advantage of an hybrid (mechanical-electrical) structure.

The single parts of this drive train have been dimensioned and the resulting system has been introduced in a simulation program.

According to the simulation results the hybridisation is able to enhance the maximum power of the scooter by 1 kW (over 30%), without changing the fuel consumption, and to allow a pure-electric operation with a range over 11 km.

Moreover, when the propulsion power comes only from the onboard batteries, and they are recharged from the electric mains, the operation cost per km is less than one half the cost of corresponding fuel consumption of a vehicle without hybridisation.