The Alpine A110 E-ternité, 100% electric, is the result of this exploratory work. It comes to celebrate the 60th anniversary. Bridging from a prestigious past to a 100% electric future, it illustrates the work which Alpine currently implements to develop its range of new models. For more than ten years, Renault Group has been a pioneer in the field of electric vehicles and has acquired a wealth of valuable experience in all areas of the automotive industry. It is therefore quite natural that the Alpine teams began thinking about the subject very early on. The arrival of Luca de Meo and the announcement of a 100% electric range at Alpine gave a clear direction for the work of the teams and an opportunity to work on electrics in an exploratory way. In the "restomod" spirit, the A110 has become the ideal platform for this research work, a bridge between a prestigious past and an even more ambitious future. Thus, the target is clear: to electrify the next Alpine vehicles, and why not starting by the A110, a paragon of sportiness known for its light weight and agility, within a realistic budget.
THE CHALLENGES OF THE DRIVETRAIN
As a Renault Group brand, it was natural, for this new project, to look first at the parts and technologies already available in-house. The battery modules are identical to those of the 100% electric Mégane E-Tech. However, to achieve optimum weight distribution and to accommodate the twelve battery modules, it was necessary to design specific battery casings for the A110 and to adapt the internal architecture. Four modules were therefore placed at the front and eight at the rear. To meet this challenge, the engineers allowed themselves to position these modules in the space in a 'atypical' fashion. Despite the addition of these twelve modules, the total weight of the Alpine A110 E-ternité remains particularly light with an increase of only 258 kg, thanks to a contained mass for the battery pack (392 kg).
A GEARBOX SPECIFICALLY DEVELOPED BY ALPINE
In order to get away from the 0 to 100kph / top speed trade-off and the constant quest for electric storage that requires large batteries, an innovative gearbox was added to the Group's "standard" motor. No gearbox available in-house allowed the Alpine engineers to meet the brief requirements of this A110 E-ternité. The desire was to find a smooth and efficient gearbox without torque breakage, but also light and compact. A gearbox was studied in-house, with the Alpine gearbox supplier, in double clutch version (DCT) with an electronic control, as on the A110 combustion engine, but with clutches dimensioned to pass high torques. The double clutch solution makes it possible to avoid a break in torque while remaining compact and light.
ELECTRONIC SYSTEM: A SUCCESSFUL TRANSPLANT OF TWO TECHNOLOGIES
The Alpine team showed ingenuity on the electronic system, mixing two electronic equipment architectures separated by ten years. This innovation provides new opportunities for architecture simplification or continuous improvement throughout the product as it enabled the features of the combustion engine AS1 to be kept whilst adding new features from the EV sector, as well as others such as the "Overtake" feature or the possibility of enabling communication between two batteries. A single ECU was installed to ensure communication between the two systems. This innovation brings new opportunities for simplifying architectures or for continuous improvement throughout the product life cycle.
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