The Bugatti Veyron 16.4 is the quickest accelerating and decelerating street-legal production car in the world, and was the world's fastest street-legal production car until the introduction of the SSC Ultimate Aero Twin Turbo produced by Shelby SuperCars.
Powered by a 1,001 PS (987 hp/736 kW) W16 engine,[2] it is able to achieve an average top speed of 407.47 km/h (253.19 mph).[3] The car reached full production in September 2005, and is handcrafted in a factory Volkswagen built near the former Bugatti headquarters in Château St Jean in Molsheim (Alsace, France). It is named after French racing driver Pierre Veyron, who won the 24 hours of Le Mans in 1939 while racing for the original Bugatti firm.
Each Veyron is being sold for €1,100,000 (net price without taxes), prices vary by exchange rates and local taxes (like value added taxes). Prices for the UK or the US are over £800,000, or around $2,000,000.
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 "W" 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 displaces 8.0 L (7,993 cc/488 in³) with a square 86 mm (3.4 in) by 86 mm (3.4 in) bore and stroke.
Putting this power to the ground is a dual-clutch Direct-Shift Gearbox computer-controlled manual transmission with 7 gear ratios via shifter paddles behind the steering wheel boasting an <150 ms shift time, designed and manufactured by Ricardo of England. The Veyron can be driven by full automatic transmission. The Veyron also features full-time four-wheel drive based on the Haldex Traction system. It uses special Michelin run-flat tires designed specifically for the Veyron to accommodate the vehicle's top speed. Curb weight is estimated at 1,888 kg (4,160 lb). This gives the car a power to weight ratio of 529 bhp/ton.
The car's wheelbase is 2710 mm (106.7 in). Overall length is 4462 mm (175.7 in). It measures 1998 mm (78.7 in) wide and 1204 mm (47.4 in) tall.
The Veyron's hydraulic spoiler.
The Veyron's hydraulic spoiler.
The Bugatti Veyron has a total of 10 radiators
Top speed was initially promised to be 407 km/h (253 mph) 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 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 407.5 km/h (253.2 mph). The top speed was verified once again by James May on Top Gear, again at Volkswagen's private test track, when the car hit 407.9 km/h (253 mph), which equated to precisely one-third of the speed of sound at sea level. When getting close to the top speed during the test he said that "the tires will only last for about fifteen minutes, but it's okay because the fuel runs out in twelve minutes." He also gave an indication of the power requirements, at 249 km/h (155 mph) the Veyron was using approximately 270 bhp (201 kW), but to get to its rated 407 km/h (253 mph) top speed required far more from the engine.
Aerodynamic friction or drag is proportional to the square of the speed; for example doubling speed quadruples drag. Work is a product of force applied over a distance travelled. Comparing a vehicle travelling at 100 mph (160 km/h) with one travelling at 200 mph (320 km/h), over a given period of time (e.g. 1 second), the faster vehicle must overcome 4 times the aerodynamic drag, and travel twice the distance of the slower one. Thus it does 8 times the work of the slower vehicle in that period of time. As power is work done / time taken it follows that the faster vehicle, travelling at twice the speed requires 8 times the power of the slower one. German inspection officials recorded an average top speed of 408.47 km/h (253.8 mph)[3] during test sessions on the Ehra Lessien test track on 2005-04-19.
The car's everyday top speed is listed at 375 km/h (233 mph). When the car reaches 220 km/h (137 mph), hydraulics lower the car until it has a ground clearance of about 8.9 cm (3½ inches). At the same time, the wing and spoiler deploy. This is the "handling mode", in which the wing helps provide 3425 newtons (770 pounds) of downforce, holding the car to the road.[10] The driver must, using a special key (the "Top Speed Key"), toggle the lock to the left of his seat in order to attain the maximum (average) speed of 407 km/h (253 mph). 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 12.5 cm (4.9 inches), drops to 6.5 cm (2.6 inches).
1 comment:
superb car i ever saw in tha world
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