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Vehicle Control System

The Enzo project is the first example of the complete integration of the vehicle control systems. Engine, gearbox, suspension, ABS/ASR, and aerodynamics all interact to optimise the vehicle's performance and safety. This presupposes an innovative approach to the design of the control system architecture, and to the development and fine-tuning of the subsystems on the car. It was made possible by the collaboration and specialist skills of Gestione Sportiva, and performance of each system was designed to enhance that of the entire car. The target when defining the control strategies of each subsystem was therefore the optimal behaviour of the car. The subsystems that interact are: the engine, gearbox, suspension, aerodynamics, and the ABS/ASR system. The large number of systems made it necessary to use special sensors. Management of the sensors is divided between the various control systems, each of which shares the relevant information with the rest of the system. The way the systems interact depends on the driving modes that the driver can choose from. The Enzo offers several set-ups: Sport, Race, No ASR.

Electrical System

The architecture of the F140 project was designed to minimize the section of the cables that link the utilities positioned on the steering wheel, the steering column, the onboard instruments, and the rest of the car. To achieve this goal, the architecture was based on a high speed communication line which links several different control units which pick up the signals "in the surrounding environment". These signals are transformed into information which can then only be exchanged through the communication line.

Engine

The engine of the Enzo Ferrari (which is known by its project number F140) is a 12-cylinder aspirated unit in a 65° V, a cylinder capacity of 5,998 cc, with a completely new design that draws on experience gained in Formula 1, and has a number of unique technical features. The cylinder head design reveals its Formula 1 origins: the "pentroof-type" combustion chamber, with four valves per cylinder, plus inlet and exhaust ducts designed to maximise the exhaust coefficients and combustion speed.

The cylinder case is built of aluminum with press-fitted sleeves lined with nicasil, with seven main bearings, and sleeve intervals of 104 mm. The con rods are made of titanium, the piston design is new, the crankshaft is lighter and the cylinder heads have four valves with high fluid dynamic efficiency, a new structure to increase rigidity, and a different oil discharge layout.

The timing gear features four overhead camshafts, direct valve control, and hydraulic tappets. It is completely chain-driven, with central transmission on triple gearing. The timing of the inlet and exhaust manifolds is continuously variable, thanks to the intervention of four variable advances activated by the engine control unit throughout the operating range via a high pressure hydraulic system, with the goal of lowering the noise and enhancing versatility.

The lubrication sump is of the F1 wrapround type, incorporating the main bearings and a specific oil recovery circuit to increase efficiency.

The variable geometry inlet manifold is also borrowed from Formula 1, with a system of small telescopic derivation cones, combined on this V12 application, with variable timing gear with a continuously variable advance on the four camshafts and a high pressure control unit.

Electronic engine management is provided on each row of cylinders by a Bosch Motronic ME7 unit which controls the PFI multiple injection system, the drive-by-wire throttle valve, and the single coils on each spark plug. Six knock sensors mounted on the crankcase guarantee knock control.

The performance goals of the new V12 have been met in full, in order to supply a unique blend of very high power, generous torque from low speeds and versatility. In spite of the large capacity of the engine, the applications derived most directly from Ferrari's Formula 1 experience have made it possible to keep the specific power of the engine at an extremely high 110 bhp/litre.