Showing posts with label Bugatti. Show all posts
Showing posts with label Bugatti. Show all posts

Bugatti EB 164 Veyron

>> Monday, June 7, 2010

Bugatti EB 164 Veyron, 2004




Bugatti Veyron 16.4
The Bugatti Veyron 16.4 is the most powerful, most expensive, and fastest street-legal production car in the world, with a proven top speed of over 400 km/h (407 km/h or 253 mph). It reached full production in September 2005. The car is built by Volkswagen AG subsidiary Bugatti Automobiles SAS and is sold under the legendary Bugatti marque. It is named after racing driver Pierre Veyron, who won the 24 hours of Le Mans in 1939 while racing for the original Bugatti firm.

History
Development of the vehicle began with the 1999 EB 18/3 "Veyron" concept car. Introduced at the Tokyo Motor Show, it was similar in design and appearance to the final Veyron production car. One major difference was the EB 18/3's use of a W18 engine with three banks of six cylinders. The Veyron was designed by Hartmut Warkuss of Volkswagen rather than Giorgetto Giugiaro of ItalDesign who had handled the three prior Bugatti concepts.

In the case of the Veyron, it will be several years before Volkswagen will be able to see if their investment in developing ground-breaking technology has paid off. One key measure is how much (if any) of the technology developed for the Veyron finds use in mass-produced cars.
The first personally owned Veyron was debuted in front of Hotel De Paris in Monte Carlo during the 2005 Grand Prix.

Specifications
The Veyron features a W16 engine—16 cylinders in 4 banks of 4 cylinders, or the equivalent of two narrow-angle V8 engines mated in a vee configuration. Each cylinder has 4 valves, for a total of 64, but the narrow V8 configuration allows two camshafts to drive two banks of cylinders so only 4 camshafts are needed. The engine is fed by four turbochargers, and it displaces 8.0 L (7,993 cc/488 in³) with a square 86 by 86 mm bore and stroke.

Putting this power to the ground is a dual-clutch DSG computer-controlled manual transmission with 7 gear ratios via shifter paddles behind the steering wheel boasting an 8 ms shift time. The Veyron can be driven by full automatic transmission. The Veyron also features full-time all-wheel drive developed by Haldex helping to transfer power to the road. It uses special Michelin run-flat tires designed specifically for the Veyron to accommodate the vehicle's top speed.
The car's wheelbase is 2700 mm (106.3 in). Overall length is 4466 mm (175.8 in). It measures 1998 mm (78.7 in) wide and 1206 mm (47.5 in) tall.
Curb weight is estimated at 4,160 lb (1890 kg). This gives the car a power to weight ratio of 529 bhp/tonne.

Performance
According to Volkswagen, the final production Veyron engine produces between 1020 and 1040 metric hp (1006 to 1026 SAE net hp), so the car will be advertised as producing "1001 horsepower" in both the US and European markets. This makes it the most powerful production road-car engine in history. Torque is 1250 N·m (922 ft·lbf).

Top speed was initially promised to be 252 mph (406 km/h), but test versions were unstable at that speed, forcing a redesign of the aerodynamics. In May 2005, a prototype Veyron tested at a Volkswagen track near Wolfsburg, Germany, and recorded an electronically limited top speed of 400 km/h (249 mph). In October, 2005, Car and Driver magazine's editor Csaba Csere test drove the final production version of the Veyron for the November 2005 issue. This test, at Volkswagen's Ehra-Lessien test track, reached a top speed of 253 mph (407 km/h).

The Veyron is the quickest production car to reach 100 km/h (62 mph) with an estimated time of 2.5 seconds. It also reaches 200 and 300 km/h (124 and 186 mph) in 7.3 and 16.7 seconds respectively. It should also be noted that the Veyron's 0-200 mph (0-322 km/h)time is quicker than the McLaren F1's 120-200 mph (193-322 km/h) time. This makes the Veyron the quickest-accelerating production vehicle in history. It also consumes more fuel than any other production car, using 40.4 L/100 km (4.82 mpg) in city driving and 24.1 L/100 km (10 mpg) in combined cycle. At full-throttle, it uses more than 125 L/100 km (2.1 mpg)—at full throttle, the Veyron would empty its 100 L fuel tank in just 12.5 minutes. The car's everyday top speed is listed at 234 mph (377 km/h). When the car reaches 137 mph (220 km/h), hydraulics lower the car until it has a ground clearance of about 3 1/2 inches (8.9 cm). At the same time, the wing and spoiler deploy. This is the "handling" mode, in which the wing helps provide 770 pounds (3425 newtons) of downforce, holding the car to the road. The driver must, using the key, toggle the lock to the left of his seat in order to use the maximum speed of 253 miles per hour (407 km/h). Theoretically it can go faster but it is electronically limited to 253 miles per hour (407 km/h) to prevent tire damage. The key functions only when the vehicle is at a stop when a checklist then establishes whether the car—and its driver—are ready to enable 'top speed' mode. If all systems are go, the rear spoiler retracts, the front air diffusers close and the ground clearance, normally 4.9 inches (12.4 cm), drops to 2.6 inches (6.6 cm).

The Veyron uses unique cross-drilled and turbine vented carbon rotors for braking that draw in cooling air. Each caliper has eight titanium pistons. Bugatti claims maximum deceleration of 1.3 g on road tires. Prototypes have been subjected to repeated 1.0 g braking from 194 to 50 mph (312 to 80 km/h) without fade. With the car's fearsome acceleration from 50 to 194 mph (80 to 312 km/h), that test can be performed every 22 seconds. At speeds above 124 mph (200 km/h), the rear wing also acts as an airbrake, snapping to a 70-degree angle in 0.4 seconds once brakes are applied, providing up to 0.6 g (6 m/s²) of deceleration. Bugatti claims the Veyron will brake from 252 mph (406 km/h) to a standstill in less than 10 seconds. The braking is also so evenly applied that the car will not deviate from a straight path if the driver lets go of the steering wheel, even with the brakes fully applied starting from close to top speed.

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Bugatti Veyron Grand Sport

>> Tuesday, March 9, 2010

Bugatti Veyron Grand Sport



The world's most significant celebration of the automobile takes place annually in Monterey, California. This year, it will see some of the most elegant, exclusive, and valuable vehicles ever produced in over 100 years of motoring, with Bugatti set to play a prominent role. On the evening prior to the Pebble Beach Concours d'Elegance, the highlight of the event, the marque renowned for impeccable automotive solutions, aesthetics and driving dynamics will unveil a second model to the world - the new Bugatti Veyron Grand Sport with a unique removable roof.

The new Bugatti Veyron Grand Sport with removable roof resulted from the unique structure of the fixed-roof Bugatti Veyron. An optimum combination of rigidity and lightweight engineering ensures the monocoque passenger cell of the original model is extremely strong while weighing an absolute minimum - it is a central element of the vehicle's structure. As the roof is an integral part of this, removing it meant the load paths had to be completely redesigned to maintain the vehicle's rigidity and crash safety, and to offer additional protection from side impacts and rolling.


The monocoque structure has been reinforced around the side skirts and the transmission tunnel. The B-pillars have been cross-stiffened using a carbon fibre support, and a central carbon plate has been positioned beneath the transmission tunnel to ensure the vehicle suffers from less torsional flexing than any other roadster.

The doors of the new Bugatti Veyron Grand Sport are made of carbon fibre, and house an integrated longitudinal beam.

In the event of an accident, this transfers the load from the A to the B-pillar, thereby dissipating impact energy. Furthermore, the two redesigned air intakes for the 16-cylinder mid-engine now feature 10-centimetre wide carbon-fibre elements to offer protection should the car roll.

When the roof is closed, the Bugatti Veyron Grand Sport can reach 407 km/h, while speeds of up to 360 km/h are possible with roof off. Should it rain, an innovative folding roof stored in the luggage compartment can be opened up like an umbrella at any time. When this folding roof is in place, the car can travel at up to 130 km/h.

Bugatti Veyron Grand Sport Specifications
* Dimensions
o Length: 4,462 mm
o Width: 1,998 mm
o Height, Normal Position: 1,204 mm
o Wheel base: 2,710 mm
o Curb Weight: 1,968 kg
o Max. permitted laden weight: 2,280 kg
o Tank capacity: 100 l
* Engine
o Motor Type/Number of Cylinders: W16
o Cylinder Capacity: 7 993 cm3
o Power output: 736 KW (1,001 hp) @ 6,000 rpm
o Max. torque: 1,250 Nm @ 2,200-5,500 rpm
o Gearbox: 7 Gear DSG
o Drive: 4WD
o Power distribution: Front axle differential with Haldex clutch; rear axle with with transverse differential lock
* Suspension
o Wheel suspension: Double wishbone front / rear
o Tyre, front: 265-680 ZR 500A Michelin Pilot Sport Pax
o Tyres, rear: 365-710 ZR 540A Michelin Pilot Sport Pax
o Tyre pressure: 3.1 bar front, 3.1 bar rear
* Suspension Heights (front / rear)
o Standard: 125 mm / 125 mm - For town traffic and speeds up to 220 km/h. From 220 km/h, automatic configuration switches from Standard to Handling
o Handling: 80 mm / 95 mm - For fast driving on country roads or motorways, or manually selectable for race tracks
o Top Speed: 65 mm / 70 mm - For V-max driving (over 375 km/h), manually selectable with separate key
* Brakes
o Brake disk diameter: 400 mm front, 380 mm rear
o Brake disk material: Carbon / ceramic front / rear
o Number of wheel brake cylinders: 8 front, 6 rear
o Number of brake pads: 4 front, 2 rear
* Aerodynamics
o CW Values
+ Standard: 0.39
+ Handling: 0.42
+ Top Speed: 0.36
+ Airbrake: 0.68
o Wing/Spoiler Angle
+ Standard: Retracted / 2° cool-down position
+ Handling with roof: 6°/27°
+ Handling without roof: 20°/27°
+ Top Speed: 2°
+ Brake setting: 55°/27°
+ Special features: Central hydraulics
* Fuel Consumption
o In town: 41,9 l/100km
o Out of town: 15,6 l/100km
o Combined: 24,9 l/100km
o Fuel type: Super lead free 98 RON / ROZ
* CO2-Emission
o In town: 999 g/km
o Out of town: 373 g/km
o Combined: 596 g/km
* Performance
o Top speed: 407 km/h
o Acceleration
+ 0-100 km/h: <>

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