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Brakes of the Bugatti Veyron

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by

Sohan Nair

on 28 February 2015

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Transcript of Brakes of the Bugatti Veyron

Brakes of the Bugatti Veyron
Made of high-tech carbon, ceramic, and titanium materials, the brake system guarantees consistently high friction values and optimum cooling. Intelligent carbon-ceramic brake discs with interior ventilation, eight-piston mono block caliper units in the front, and six-piston caliper units in the rear ensure the necessary driving agility on a par with professional race cars.
The rear spoiler serves as an additional air brake at speeds beyond 200 km/h. Activated by the brake pedal, the spoiler shoots up and is deployed at a 55-degree angle in less than 0.4 seconds. Tests including repeated follow-up brake maneuvers have shown this brake system to be not only the most powerful, but also the most reliable and durable ever built into a serial production vehicle. It boasts deceleration values of up to 1.3 g, with an additional 0.6 g support by the rear spoiler. Even during full braking maneuvers at top velocities, these brakes won’t give. Brake fade, the much feared performance reduction after repeated application of the brakes – e.g. during long downhill drives – is virtually impossible.
There is one thing the Veyron does even faster than accelerating: braking.
The sports car exploits the full range of available technological potential to allow for ultra-fast deceleration. It takes less than 5 seconds to get from 0 to 100 km and back to a complete standstill. In theory, that is, for such a feat would require the driver to react with nearly superhuman speed. The whole braking process takes no more than 31.4 meters or 2.3 seconds – that is less than the car needs to get from 0 to 100 km. And even the 400-to-0-km/h deceleration is a matter of less than 10 seconds. The Veyron’s carbon ceramics brakes are made to withstand surface temperatures of upto 1,100°C.
The Bugatti Veyron EB 16.4 is a mid-engined grand touring car, designed and developed by the Volkswagen Group and manufactured in Molsheim, France by Bugatti Automobiles S.A.S.
The Super Sport version of the Veyron is the fastest street-legal production car in the world, with a top speed of 431.072 km/h (267.856 mph). The original version has a top speed of 408.47 km/h (253.81 mph). It was named Car of the Decade (2000–2009) by the BBC television programme Top Gear. The standard Bugatti Veyron won Top Gear's Best Car Driven All Year award in 2005.
On 6 April 2013, Bugatti set the record for having the highest top speed of any roadster in the world with the Veyron Grand Sport Vitesse, reaching on average a top speed of 408.84 km/h (254.04 mph).
Special Features of a Bugatti Veyron Braking system
The Veyron's brakes use cross drilled, radially vented carbon fibre reinforced silicon carbide (C/SiC) composite discs which have a much greater resistance to brake fade when compared with conventional cast iron discs. The front brakes have eight titanium pistons and the rear calipers have six pistons. Bugatti claims maximum deceleration of 1.3 g on road tyres. As an added safety feature, in the event of brake failure, an anti-lock braking system (ABS) has also been installed on the handbrake.
Prototypes have been subjected to repeated 1.0 g braking from 312 km/h (194 mph) to 80 km/h (50 mph) without fade. With the car's acceleration from 80 km/h (50 mph) to 312 km/h (194 mph), that test can be performed every 22 seconds. At speeds above 200 km/h (120 mph), the rear wing also acts as an airbrake, snapping to a 55° angle in 0.4 seconds once brakes are applied, providing an additional 0.68 g (6.66 m/s2) of deceleration (equivalent to the stopping power of an ordinary hatchback). Bugatti claims the Veyron will brake from 400 km/h (250 mph) to a standstill in less than 10 seconds, though distance covered in this time will be half a kilometre (third of a mile).
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