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The Alpine A390, the brand’s new all-electric fastback sports car, is the first Alpine with more than 400 hp and over 800 Nm of torque, which delivers 0 to 62 mph acceleration in under 4 seconds.
The Alpine A390 also features a one-of-a-kind three-motor architecture: the electric motor at the front powers the front axle, and the two at the rear power one wheel each. Besides enabling all-wheel drive, this configuration can manage the two rear motors independently, resulting in a system that outperforms mechanical limited-slip differentials with extra-precise and quick torque control on each rear wheel.
‘Alpine Active Torque Vectoring’ creates a variable torque split, generating a difference in torque distribution to the rear wheels, in response to steering angle and vehicle speed. This corrects any differences in slip between the right and left wheels and optimises cornering dynamics.
Alpine Active Torque Vectoring can distribute anywhere between 0% and 100% of the torque between the two rear wheels, improving the driving safety of the Alpine A390 by enhancing traction. If one of the rear wheels skids on a patch of ice, the torque will be corrected to optimise road holding.
To keep the driver informed, a separate display in the instrument cluster and the Alpine Telemetrics Live Data screen provide a real-time feed on Alpine Active Torque Vectoring’s operation.
Three complementary systems manage torque: Alpine Torque Pre-Control handles traction, e-AWD distributes torque between the front and rear axles to balance the vehicle on turns, and Alpine Active Torque Vectoring distributes torque between the left and right rear wheels.
The A390 has five driving modes that can be selected using the dedicated button on the steering wheel: Save, Normal, Sport, Personalised and a new Track mode. Depending on the driver’s choice of customisation, the steering angle and speed, Alpine Active Torque Vectoring distributes torque differently between the left and right wheels, emphasising agility, cornering dynamics or stability at high speeds.
