HY-KERS System seamlessly blends

Blistering Performance and Maximum Efficiency

The LaFerrari represents Ferrari’s most ambitious project yet to push the boundaries of technology on a road car, drawing together the finest expression of the marque’s technical capabilities in both GT and Formula 1 engineering. It boasts the most extreme performance ever achieved by a Ferrari production car and features the most advanced and innovative technical solutions which will, in the future, filter down to the rest of the Ferrari range. With production limited to just 499 examples, LaFerrari continues Ferrari’s tradition in building uncompromising performance cars for a small number of highly discerning clients.


Powertrain - 2 beating hearts

The LaFerrari is the first ever car with hybrid technology to come out of Maranello. The 6262cc V12 produces 800 CV and the electric motor a further 12o kW (163 CV) for a total of over 960 CV. Thanks to the huge technological leap forward represented by the HY-KERS system, the LaFerrari is the most high performance and efficient Ferrari ever built.Making full use of Ferrari’s F1 expertise with KERS systems which has been further developed for application to road cars, the HY-KERS guarantees maximum integration between the V12 and the electric motor, seamlessly blending extreme performance with maximum efficiency. The high levels of torque available at low revs from the electric motor allowed the engineers to optimise the internal combustion engine’s performance at higher revs, thus providing unending power throughout the rev range and a maximum torque peak of over 900 Nm.

Combustion engine + electric motor for exceptional performance

This solution has not involved any increase in the car’s dimensions or its wheelbase and has, in fact, helped lower its centre of gravity. The F1 dual-clutch gearbox is coupled with the electric motor and an auxiliary electric motor replaces the traditional alternator, thus saving weight and reducing the overall dimensions of the packaging. In addition, the HY-KERS solution was designed from the outset to be flexible and modular to enable its evolution for application to other models in the range.

The power of 40 traditional batteries weight only 60 kg

The electric motor was designed employing High Specific Power Density technology which enabled the engineers to drastically reduce weight and volume in relation to available torque. The result is performance figures that are comparable to those of the F1 car with the same torque density and the same efficiency (94%) or, in other words, very limited power dissipation.Battery size was an essential factor in optimising the HY-KERS’ weight-power ratio with the aim being to maximise performance while reducing fuel consumption. The solution was an extremely complex system consisting of 120 cells assembled into eight 15-cell modules, with a power output that’s the equivalent of 40 traditional batteries but weighing just 60 kg. The high-voltage batteries are actually assembled in-house by the Scuderia racing department. The batteries are charged in two different ways: under braking - even hard braking when the ABS intervenes, such as when driving on a track - and every time the V12 produces more torque than required, such as in cornering. In the latter instance, rather than the being sent to the wheels, the excess torque is converted to energy and stored in the batteries.

The HY-KERS system is governed by the Hybrid Power Unit which controls the power delivery from both the V12 and the electric motor via two inverters and two DC-DC converters. The variable-frequency control makes torque delivery rapid and precise.This technology has enabled Ferrari’s engineers to maximise performance and reduce fuel consumption. C02 emissions have been reduced to 330 g/km without resorting to electric-only drive which was not within the mission of this model. The HY-KERS system is, however, designed so that in future applications a car can be driven using exclusively electric power for a few kilometres and, during development testing, a full-electric version of LaFerrari achieved just 220 g/km of C02 emissions on the combined cycle.


The 6262 cc V12 produce 800 CV and 9250 rpm

High volume intake plenum

The 6262 cc V12 is the most powerful naturally-aspirated engine ever used on Ferrari a road car. As well as producing 800 CV, the V12 spins to 9250 rpm which guarantees fantastic performance and driving pleasure as well as that unmistakable Ferrari V12 sound. These completely unprecedented results can be attributed to work carried out in three areas: volumetric, mechanical and combustion efficiency. To increase volumetric efficiency, the LaFerrari employs continuously variable-length intakes - a mainstay in F1 engine technology until rule changes banned its use – which boost performance. As the length of the inlet tracts vary in line with engine speed, the torque and power curves are optimised across the rev range to suit the torque output of the electric motor.

High efficient intake air system

Total torque generated by the V12 together with the electric motor is over 900 Nm, with the instantaneous torque from the electric motor being employed at lower revs and with the V12 engine power and torque optimised at higher revs. The V12’s peak torque of 700 Nm is in fact developed at 6750 rpm. In addition the entire intake system – from the dynamic air intakes on the top of the rear wheelarches to the intake plenum - was designed to maximise intake volume efficiency. The engine also boasts a very high 13.5:1 compression ratio for maximum combustion chamber efficiency.

New crankshaft reduce masses

Improvements in mechanical efficiency involved a number of components, most importantly the crankshaft which has been lightened and incorporates new, more aerodynamically efficient counter webs to reduce pumping losses. The crankshaft design also reduces masses around the rotation axis which cut overall mass by around 19 per cent.

Special unmistakable Ferrari V12 soundtrack

Last but not least, one of the LaFerrari’s signatures is its engine sound. Thanks to tuning of the exhaust in particular, the LaFerrari has an unmistakable Ferrari V12 soundtrack. The equal-length 6-into-1 exhaust system was hydroformed using Inconel as in F1 to help keep overall weight down with the additional benefit of very high temperature resistance characteristics.