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 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.

LaFerrari, the new limited-edition special series car from the Ferrari Motors, has been unveiled at the Geneva International Motor Show 2013. The HY-KERS system and a carbon-fiber chassis are just two of the innovations sported by the new arrival.

The beast combines an initial 789 horsepower from the 6.3 liter V12 with the 160-horsepower of the electric engine. Low-end torque propels the sports car to 62 mph in under three seconds, reaching 124 mph in a mindblowing seven seconds. The machine boasts a top speed of 205 mph.

@teemunny


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