Italian automotive supplier Marelli developed and manufactured the three e-motors used in the new Maserati GranTurismo Folgore, and also provided its proprietary Adaptive Driving Beam Matrix LED headlamps and Telematic Control Unit connectivity system.
The 800 V motors, which were developed over a two-year span and produced at Marelli’s Modugno plant in Bari, Italy, supply a total installed power of 1,200 hp in a compact profile. There are two motors mounted on the front axle and one on the rear, and they reach a power density of 9.2 kW/kg and a total torque of 1,350 Nm.
Solid conductors in the hairpin windings of the stator, Marelli says, result in improved electromagnetic and thermal performance and a greater than 80% filling factor. The company also says that its choice of rotor geometry and the use of specific segmented magnets, as well as optimized skew of the laminate stack, reduce noise, vibration and magnetic cogging. Its cryogenic cooling process used in rotor production, reaching about -200° C, ensures perfect fit of the shaft into the stack.