Paris show: Ferrari confirms F70 will be a hybrid
BY DAVID HASSALL | 28th Sep 2012
Revealing the supercar’s ground-breaking carbon-fibre monocoque tub, Mr Montezemolo said the Enzo replacement would be the company’s first hybrid.
He also said that Ferrari’s experience in carbon-fibre construction methods through its championship-leading F1 team would advance the material’s use in a production car.
The chassis on display revealed large cut-outs in the roof to provide easier access for occupants lucky enough to step into the F70, and suggesting the possibility of doors that open slightly upwards as well as outwards.
Although Ferrari released no technical details of the hybrid powertrain, it will be the V12-based Hy-KERS system announced at the Beijing motor show a few months ago.
This set-up features an electric motor mounted to the dual-clutch transmission, providing a short boost in performance, as in Formula One racing.
Mr Montezemolo said the transfer of F1 technology was crucial in producing an “extremely light and extremely rigid” chassis for the limited-edition Prancing Horse.
Ferrari claims the chassis – which is to be built entirely in-house – will be 20 per cent lighter than the Enzo’s, despite the extra weight required to house the hybrid components and to meet regulatory obligations.
As well as being lighter, the tub is claimed to be 27 per cent better for torsional rigidity and 22 per cent for beam stiffness.
It was produced by an internal working group that included “an important contribution” by Rory Byrne, the South African designer behind Ferrari’s remarkable F1 world championship successes since 2000.
“Ferrari drew on its vast experience in working with composites for single-seaters for its new hybrid model, which will be produced in a limited-edition, special series,” said Ferrari.
“For this model, Ferrari chose not to use the industrial carbon-fibre manufacturing techniques, such as RTM (Resin Transfer Moulding), normally adopted in the automotive sector as they did not meet the quality and functional standards Ferrari set itself.
“The chassis uses four different types of carbon-fibre and is hand-laminated then cured in autoclaves following engineering processes which optimise the design by integrating the different components.” Trickle-down technology from F1 also features in the hybrid powertrain, which is claimed to result in the motor and its electronic control unit providing precise torque management that can be used to improve a car’s dynamic characteristics in terms of traction control and brake distribution.
A motor is also bolted to the front of the engine and provides power to engine ancillaries such as the power steering, brake servo and air-conditioning systems, altering its drag on the engine based on the level of energy in the batteries.
