The SF90 Spider, a convertible version of the SF90 Stradale, was presented today during a dedicated digital event that allowed Ferraristas from all over the world to preview a series of exclusive contents concerning the car and some details of its development.
The SF90 Spider, the Prancing Horse’s first PHEV series spider, sets itself as a new benchmark in terms of performance and innovation with respect to the range of the Maranello-based company and the production of the entire automotive sector. The car inherits from the SF90 Stradale its extreme range supercar setting and its record-breaking performance, managing to increase driving pleasure and usability thanks to the latest version of the RHT folding hardtop. The SF90 Spider is therefore the ideal car for all those who aspire to the highest level of Ferrari technology without sacrificing the versatility and driving emotions en plein air guaranteed by the RHT architecture.
For the first time on a Ferrari spider of the range, the SF90 Spider offers a plug-in hybrid architecture in which the internal combustion engine is integrated with two electric motors at the front, which make up the RAC-e system (Electric Curve Trim Regulator). , and one at the rear, deriving from the experience gained by the Prancing Horse in Formula 1 and which inherits the name MGUK (Motor Generator Unit, Kinetic). The synergy between the internal combustion engine and electric motors makes it possible to reach the maximum power of 1000 hp and to position the SF90 Spider at the top not only of the range of the Maranello company, but of the entire category.
The powertrain architecture is defined by a V8 turbo internal combustion engine, by the 8-speed DCT gearbox with Ediff, by the RAC-e electric front axle equipped with two independent electric machines which also performs the function of exclusive propulsion in electric gear, by MGUK electric machine positioned between engine and gearbox, with high voltage battery and power electronics (inverter) for the management of electric motors.
Thanks to its 780 hp (and 195 hp / l of specific power), the heat engine of the SF90 Spider exceeds any other turbo V8 ever made by Ferrari by 60 hp. To achieve this result, the Maranello engineers concentrated on redesigning the intake and exhaust system. In order to improve the internal fluid dynamics, all the ducts were almost horizontally aligned at the height of the engine heads, the turbocharger unit was lowered and the exhaust line was raised higher. This rationalization led, among other things, to the lowering of the center of gravity and the containment of the overall weight, also thanks to the use of Inconel® for the exhaust pipe.
The new gearbox with double clutch architecture in oil bath, launched on the SF90 Stradale, has 8 gears. The optimization of the layout, due to the adoption of a dry sump and the compacting of the clutch unit by 20% compared to the 7-speed gearbox, has made it possible to reduce the installation height in the car by 15 mm with relative lowering of the mechanical center of gravity . Despite the additional ratio and the maximum torque limit of 900 Nm (20% higher than the 7-speed) it was possible to reduce the weight by 10 kg compared to the 7-speed gearbox. The clutch improves performance by 35% compared to the previous application and transmits maximum dynamic torque in shifting of 1200 Nm.
In the redesign of the exhaust system, great attention was paid to the sound of the engine, one of the fundamental ingredients of driving pleasure for every Ferrari. Thanks to the introduction of the hot tube system that allows a better transfer of the sound inside the passenger compartment, it has been possible to expand the range of frequencies and engine orders, improving the quality of the sound on board and intensity as the revs increase compared to the previous ones. V8 Ferrari.
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