Enzo Suspension and Wheels

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The Ferrari Enzo's Suspension and Wheels The Enzo has independent front and rear suspension with jointed double wishbones, and antidive-antisquat geometries to limit pitching during the transfer of longitudinal loads. The front uspension, which is push-rod in type with an opposed damper, also incorporates a lift to increase ground clearance during parking manoeuvres. The rear suspension was designed to adapt to the chassis, with the engine-gearbox-differential assembly supported elastically, and a rear subframe.

Combined with this suspension layout, an adaptive set-up was adopted for the Enzo project, based on a system of continuous control of the damping effect.

The adoption of this system on the vehicle makes it possible to reconcile handling requirements (i.e. roadholding, minimal variation of the ground load) with the demands of comfort (movement and acceleration of the "shell", vibration transmitted to the driver), without having to adopt passive solutions (standard dampers) as a compromise.

In other words, electronic adaptation of the damping effect makes it possible to use a damper setting that is sufficiently comfortable in the car's basic configuration ("Sport" setting), yet there is also a setting that offers extra control in high performance conditions ("Race" setting).

The system uses the unsprung weights (wheels and suspension) to hold the sprung weight still (body) but it also insulates the shell from impulses transmitted to the wheels by the ground. The system is actually made up of four sensors (accelerometers) on the shell, two vertical wheel sensors, one vehicle speed sensor and a brake switch.

The dampers are fitted with an internal proportional valve governed by the control unit, allowing damping to be modified instantly.

The braking torque control strategies (via ABS/ASR) were specially developed on the basis of the installed power and the optimisation of the braking system, and achieved a satisfactorily convenient result in terms of torque and braking pressure. Although the Enzo project put the emphasis on handling, because of the car's extreme connotations, the adaptive set-up system employed meant that a good level of comfort could be obtained.

Where the wheel modules are concerned, single-bolt light aluminium alloy wheels were chosen. The tyres were developed specifically for the Enzo project by Bridgestone and bear the exclusive name "Bridgestone Potenza RE050 Scuderia".

In order to maximise running safety, the car is equipped with a system that measures tyre pressure through special sensors inside the wheel rims, near the inflation valve. These sensors transmit a signal which is picked up by the antennae behind the stone traps on the bodyshell and linked to the control unit of the pressure monitoring system, which transmits the state of the tyre pressure to the instrument panel.

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This Page was last update: Sunday, December 15, 2002 at 6:00:46 PM
This page was originally posted: 12/2/2002; 7:22:51 AM.

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