Ferrari SF90

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Ferrari SF90

The Ferrari SF90 Stradale is an  mid-engine PHEV (Plug-in Hybrid Electric Vehicle) sports car produced by the Italian automobile manufacturer Ferrari. The car shares its name with the SF90 Formula One car with the name standing for the 90th anniversary of the Scuderia Ferrari racing team and "Stradale" meaning for road.




Specifications

Battery and driving modes

The car has a 7.9 kWh lithium-ion battery for regenerative braking, giving the car 26 km (16 mi) of electric range.The car comes with four driving modes depending on road conditions. The modes are changed by the eManettino knob present on the steering wheel.
The eDrive mode runs the car only on the electric motors. The Hybrid mode runs the car on both the internal combustion engine and the electric motors and is the car's default mode. In this mode, the car's onboard computer (called control logic) also turns off the engine if the conditions are ideal in order to save fuel while allowing the driver to start the engine again. The Performance mode keeps the engine running in order to charge the batteries and keeps the car responsive in order for optimum performance. The Qualify mode uses the powertrain to its full potential.
The control logic system makes use of three primary areas; the high voltage controls of the car (including the batteries), the RAC-e (Rotation Axis Control-electric) torque vectoring system and the MGUK along with the engine and gearbox.


Powertrain

The SF90 Stradale is equipped with three electric motors, adding a combined output of 223 PS (164 kW; 220 hp) to a twin-turbocharged V8 engine rated at a power output of 780 PS (574 kW; 769 hp) at 7,500 rpm. The car is rated at a total output of 1,000 PS (735 kW; 986 hp) at 8,000 rpm.The engine is an evolution of the unit found in the 488 Pista and the upcoming F8 Tributo models. The engine's capacity has been increased to 3,990 cc and the bore has also been increased to 88 mm (3.5 in). The intake and exhaust of the engine have been completely modified. The cylinder heads of the engine are now narrower and the all-new central fuel injectors run at a pressure of 350 bar. The assembly for the turbochargers is lower than that of the exhaust system and the engine sits 50 mm (2.0 in) lower in the chassis than the other mid-engine V8 models in order to maintain a lower centre of gravity. The engine utilises a smaller flywheels and an inconel exhaust manifold.
The front wheels are powered by two electric motors (one for each wheel), providing torque vectoring. They also function as the reversing gear, as the main transmission (eight-speed dual-clutch) does not have a reversing gear.

Transmission

The engine of the SF90 Stradale is mated to a new 8-speed dual-clutch transmission. The new transmission is 10 kg (22 lb) lighter and more compact than the existing 7-speed transmission used by the other offerings of the manufacturer due to the absence of a reverse gear since a reverse gear is provided by the electric motor mounted on the transmission. The new transmission also has a 30% faster shift time (200 milliseconds).

Interior

The interior of the SF90 Stradale features Ferrari's high-tech technology. A 16-inch curved display located behind the steering wheel displays various vital statistics of the car to the driver. The car also employs a new head-up display that would reconfigure itself according to the selected driving mode. The steering wheel is carried over from the 488 but now features multiple capacitive touch interfaces to control the various functions of the car. Other conventional levers and buttons are retained. The interior will also channel sound of the engine to the driver according to the manufacturer.

Handling

The SF90 Stradale employs eSSC (electric Side Slip Control) which controls the torque distribution to all four wheels of the car. The eSSC is combined with eTC (electric Tractional Control), a new brake-by-wire system which combines the traditional hydraulic braking system and electric motors to provide optimal regenerative braking and torque vectoring.

Chassis

The car's all-new chassis combines aluminium and carbon fibre to improve structural rigidity and provide a suitable platform for the car's hybrid system. The car has a total dry weight of 1,570 kg (3,461 lb) after combining the 270 kg (595 lb) weight of the electric system.

Performance

Ferrari states that the SF90 Stradale is capable of accelerating from a standstill to 100km/h (60mph) in 2.5 seconds,and 0–200km/h (124mph) in 6.7 seconds and can attain a top speed in excess of 340 km/h (211 mph).

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