The Ferrari SF90 Stradale 986hp all wheel drive plug-in hybrid 2019 – the new series-production supercar
The most powerful Prancing Horse car ever references Scuderia Ferrari
Maranello, 29 May 2019 – Ferrari introduces a new chapter in its history with the introduction of its first series production PHEV (Plug-in Hybrid Electric Vehicle), the SF90 Stradale. The new model is extreme on every level and represents a true paradigm shift, because it delivers unprecedented performance for a production car. Figures such as 1,000 cv, and a weight-to-power ratio of 1.57 kg/cv, and 390 kg of downforce at 250 km/h not only put the SF90 Stradale at the top of its segment, but also mean that a V8 is the top-of-the-range model for the first time in the marque’s history.
The car’s name encapsulates the true significance of all that has been achieved in terms of performance. The reference to the 90th anniversary of the foundation of Scuderia Ferrari underscores the strong link that has always existed between Ferrari’s track and road cars. A brilliant encapsulation of the most advanced technologies developed in Maranello, the SF90 Stradale is also the perfect demonstration of how Ferrari immediately transitions the knowledge and skills it acquires in competition to its production cars.
The SF90 Stradale has a 90° V8 turbo engine capable of delivering 780 cv, the highest power output of any 8-cylinder in Ferrari history. The remaining 220 cv is delivered by three electric motors, one at the rear, known as the MGUK (Motor Generator Unit, Kinetic) due to its derivation from the Formula 1 application, located between the engine and the new 8-speed dual-clutch transmission on the rear axle, and two on the front axle. This sophisticated system does not, however, make for a more complicated driving experience. Quite the opposite, in fact: the driver simply has to select one of the four power unit modes, and then just concentrate on driving. The sophisticated control logic takes care of the rest, managing the flow of power between the V8, the electric motors and the batteries.
The SF90 Stradale is also the first Ferrari sports car to be equipped with 4WD, a step necessary to allow the incredible power unleashed by the hybrid powertrain to be fully exploited, ensuring the car has become the new benchmark for standing starts: 0-100km/h in 2.5 sec and 0-200km/h in just 6.7 seconds.
The new car is epoch-changing from a stylistic perspective as it completely rewrites the mid-rear-engined sports berlinetta proportions introduced on the 360 Modena twenty years ago, instead taking its inspiration from Ferrari’s recent supercars. A good example is the cockpit, which has a smaller frontal section and is placed closer to the front of the car to reduce drag. This was also achieved without impacting on-board comfort.
Another major innovation is the steering wheel which now has a touchpad and a series of haptic buttons that allow the driver to control virtually every aspect of the car using just their thumbs. The central instrument cluster is now entirely digital with the first automotive application of a 16” curved HD screen which can be fully configured and controlled using the controls on the steering wheel.
The Ferrari SF90 Stradale 986hp all wheel drive plug-in hybrid 2019 in details
POWERTRAIN
The SF90 Stradale is the first ever Ferrari to feature PHEV (Plug-in Hybrid Electric Vehicle) architecture which sees the internal combustion engine integrated with three electric motors, two of which are independent and located on the front axle, with the third at the rear between the engine and the gearbox.
The internal combustion engine and the electric motors work in synergy to unleash an incredible 1,000 cv which means the SF90 Stradale sets a whole new benchmark in terms of its performance and innovative content not just with regard to the Ferrari range, but also its competitors.
INTERNAL COMBUSTION ENGINE
Thanks to its 780-cv power output, the turbo V8 featured in the SF90 Stradale raises the bar for the performance limits achievable by this type of architecture. The starting point was the F154 family engine which has won the International Engine of the Year award for the fourth consecutive year, an unprecedented achievement for any power unit.
Together with its 195 cv/l specific power output, which is the highest in the segment, the engine also delivers 800 Nm of torque at 6,000 rpm. To deliver this extraordinary result, Ferrari’s engineers focused on several different areas of the engine, starting by increasing its capacity from 3,902 cc to 3,990 cc thanks to a larger bore of 88 mm.
The intake and exhaust system was completely redesigned and now features a new, narrower cylinder head with a central injector and the adoption of 350-bar GDI, another first for a Ferrari V8.
To improve the internal fluid dynamics, not only was a larger diameter intake valve adopted but the ducts are all horizontally lined up at engine head height; the turbo charger assembly has been lowered while the exhaust line is higher, as testified by the fact that the tail pipes are now in the upper section of the rear bumper. The turbos are now equipped with electronically-controlled wastegates to improve catalyser heating and new compressor volutes to optimise fluid-dynamics.
The re-engineering goes well beyond fluid-dynamics: the rationalisation of the layout has resulted in both a lower centre of gravity, thanks in part to the adoption of a smaller-diameter fly wheel, and a reduction in overall weight thanks to the use of Inconel instead of steel for the exhaust manifold. Meticulous attention was lavished on sound quality when redesigning the exhaust system and the result is fuller, richer harmonics across the entire frequency range.
ELECTRIC MOTORS
The SF90 Stradale is equipped with three electric motors capable of generating a total of 220 cv (162 kW). A high performance Li-ion battery provides power to all three motors and guarantees a 25-kilometre range in all-electric eDrive mode, using just the front axle. When the internal combustion engine is turned off, the two independent front motors deliver a maximum speed of 135 km/h with longitudinal acceleration of ≤0.4 g. Reverse can only be used in eDrive mode which means the car can be manoeuvred at low speeds without using the V8. The front motors are integrated into the launch control strategy for maximum performance when accelerating.
FUNCTION MODES
The internal combustion engine and electric motors work in synergy to generate an incredible 1,000 cv, which puts the SF90 Stradale at the very top of the range in performance terms. The control logic optimally manages the power flows either with the emphasis on efficiency or performance depending on the user profile selected by the driver.
Thanks to an additional steering wheel-mounted selector, dubbed the eManettino (analogous to the Manettino which is used to set the electronic vehicle dynamics modes), the driver can choose from four different power unit management modes:
eDrive: the internal combustion engine remains off and traction is entrusted entirely to the electric front axle. Starting with a fully charged battery, the car can cover up to 25 km in this mode. This mode is ideal for city centre driving or any other situation in which the driver wishes to eliminate the sound of the Ferrari V8.
Hybrid: this is the default setting when the car is turned on, in which the power flows are managed to optimise the overall efficiency of the system. The control logic autonomously decides whether to keep the internal combustion engine running or turn it off. If it is on, the internal combustion engine can run at maximum power thus guaranteeing powerful performance whenever the driver requires.
Performance: unlike ‘Hybrid’, this mode keeps the ICE running because the priority is more on charging the battery than on efficiency. This guarantees that power is instantly and fully available when required. This mode is best suited to situations in which driving pleasure and fun behind the wheel are the main focus.
Qualify: this mode allows the system to achieve maximum power output by allowing the electric motors to work at their maximum potential (162kW). The control logic prioritises performance over battery charging.
CHASSIS
Although the extra 270 kg required to incorporate the hybrid system into the car have been amply offset by the extra power delivery (220 cv, with a weight/power ratio for the system alone of 1.23 kg/cv), in-depth research was still required to ensure that overall weight was kept to 1,570 kg, thus guaranteeing a record-breaking weight/power ratio of 1.57 kg/cv.
The chassis has been completely redesigned with a multi-material and multi-technology approach to absorb the extra stresses associated with the new power unit and the introduction of AWD. A number of technological innovations have been introduced, not least hollow castings, which replace the traditional ribbed castings. Other new solutions include an all-carbon-fibre bulkhead between the cabin and the engine and two new aluminium alloys, one of which is a high-strength 7000 series alloy for some of the sheet metal. As a result, the SF90 Stradale chassis boasts 20% higher bending stiffness and 40% higher torsional rigidity than previous platforms without any increase in weight. This has significant advantages for the car’s dynamics. NVH (noise, vibration, harshness) characteristics have also been improved by the use of a new alloy known as ‘quiet aluminium’ for the floor pan.
AERODYNAMICS
The greatest challenge in crafting the aerodynamics of the SF90 Stradale was posed by the need to deliver downforce and aerodynamic efficiency at a level never before achieved either by Ferrari or its competitors, whilst simultaneously guaranteeing that all the subsystems of the new power unit (internal combustion engine, electric motors, battery and inverters) would always function as optimally as possible.
As always, the aerodynamics department worked closely with Ferrari Design and this produced downforce and efficiency figures unmatched by any other car in the segment. Once again, they were achieved in typical Ferrari fashion: rather than using simple add-on elements, the car’s forms were meticulously sculpted.
The results in terms of performance are impressive indeed: thanks to its ability to generate 390kg of downforce at 250 km/h, the SF90 Stradale is now the new benchmark for downforce and efficiency in high-performance road cars.
DESIGN
The SF90 Stradale is the most advanced car in the range from a point of view of performance and technology. The definition of the exterior styling was inspired by that principle: to create a forward-looking, innovative design that transmits the car’s mission as an extreme sports car – Ferrari’s first series production supercar.
EXTERIOR
The SF90 Stradale’s architecture, in which the cabin is located ahead of the mid-mounted engine, provided Flavio Manzoni and his team of designers at the Ferrari Styling Centre, with the ideal platform on which to craft a genuine supercar of impeccable proportions.
The compact bubble-shaped cabin has an aeronautical cockpit feel and the fact that it has been shifted so far forward is further emphasised by the geometry of the two body-coloured rear flying buttresses that enclose the rear.
Another signature solution is the headlights which hail a move away from the L-shaped look, to a slender slit design integrated with the brake air intakes resulting in a characteristic C-shape which lends the front of the car an original and futuristic appeal.
In an absolute first for a Ferrari, the SF90 Stradale uses matrix LED headlight technology to improve visibility in all driving conditions thanks to active beam control.
The tail lights have also evolved quite radically from Ferrari’s iconic round shape. The eye-catching, more horizontal luminous rings create a more horizontal perception of the tail lights which in turn visually lowers the height of the tail.
INTERIOR
While the SF90 Stradale’s exterior was crafted to underscore its seamless combining of form, technology and performance, the interior is even more radical. The very explicit aim there was to create a cockpit that ushered in an entirely new design direction, the effects of which would carry over into Ferrari’s entire future range.
The designers took a futuristic approach to the interface concept with a strong focus on creating a wraparound aeronautically-inspired cockpit with particular emphasis on instruments. This further emphasised and underscored the symbiotic relationship between car and driver. In fact, the SF90 Stradale makes an epoch-changing leap forward both in formal and content terms, updating the Human Machine Interface with all-digital technology.
The “hands-on-the-wheel” philosophy has consistently driven the development of the human-machine interface in every Ferrari F1 car and its subsequent gradual transfer to its road-going sports cars. The SF90 Stradale’s steering wheel completes that transfer process from the competition world and also ushers in a new era by introducing a series of touch commands that allow the driver to control virtually every aspect of the car without ever taking their hands off the wheel.
The traditional controls include the now-classic steering-wheel mounted headlight control, windscreen wipers, indicators and the Manettino for driving modes.
TECHNICAL SPECIFICATIONS
Internal combustion engine
Type - V8 – 90° – turbo – dry sump
Total displacement -3990 cc
Maximum power output* -574 kW (780 cv) @ 7500 rpm
Max torque -800 Nm @ 6000 rpm
Specific power output - 195 cv/l
Max. engine speed - 8000 rpm
Compression ratio - 9.5:1
Dimensions and weight
Length 4710 mm
Width 1972 mm
Height 1186 mm
Wheelbase 2650 mm
Front track 1679 mm
Rear track 1652 mm
Dry weight** 1570 kg
Weight distribution 45% front – 55% rear
Boot capacity 74 l
Rear shelf capacity 20 l
Fuel tank capacity 68 l (2 reserve)
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Hybrid system
Maximum power electric motors - 162 kW (220 cv)
Battery capacity - 7.9 kWh
Max. range under electric power - 25 km
Tyres
Front 255/35 ZR 20 J9.5
Rear 315/30 ZR 20 J11.5
Transmission and gearbox 8-speed, F1 dual-clutch transmission
Performance
Maximum speed 340 km/h
0-100 km/h 2.5 s
0-200 km/h 6.7 s
100-0 km/h <29.5 m
Dry weight/power 1.57 kg/cv
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