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#129964 - 2nd Dec 2005 8:55am Bugatti Veyron : In detail (Fastest Production Car)
Mark Online   Reading


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Registered: 9th Nov 2003
Posts: 20958
Loc: Wirral


How would you define the most amazing production car in the world?
Would it be:
  • The car with the most horsepower?
  • The car with the fastest top speed and acceleration?
  • The most expensive car?

At the moment, the Bugatti Veyron appears to have it all:
  • A W-16 engine that can produce 1,001 horsepower
  • A top speed of 250+ mph (400+ kph)
  • A zero-to-60 time of three seconds
  • A zero-to-180 time of 14 seconds



A price tag somewhere in the $1 million range.
Lets take an in-depth look at this amazing automobile and see how
it is possible to fit so much performance into a single machine.
It all starts with the engine...
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#129965 - 2nd Dec 2005 9:05am Re: Bugatti Veyron : In detail (Fastest Production Car)
Mark Online   Reading


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Registered: 9th Nov 2003
Posts: 20958
Loc: Wirral
It All Starts With the Engine

The Bugatti Veyron is a car built around an engine.
Essentially, Bugatti made the decision to blow the doors off
the supercar world by creating a 1,000-horsepower engine.
Everything else follows from that resolution.




So let's start with the engine.
How would you begin the design process for an engine this powerful?
If you know a Car Engine,
you know that if you want to create a 1,000-horsepower engine,
it has to be able to burn enough gasoline to generate 1,000 horsepower.
That works out to about 1.33 gallons (5 liters) of gasoline per minute.

How much gas is that?
Here's a quick calculation,
which you can ignore if you hate math:
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#129966 - 2nd Dec 2005 9:13am Re: Bugatti Veyron : In detail (Fastest Production Car)
Mark Online   Reading


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Registered: 9th Nov 2003
Posts: 20958
Loc: Wirral
The Engine: Creating the Magic




Bugatti did two things to create a compact engine capable of producing 1,000 hp.
The first and most obvious thing is turbocharging.

If you know How Turbochargers Work,
you know that one easy way to make an engine more powerful
without making the engine bigger is to stuff more air
into the cylinders on each intake stroke.
Turbochargers do that. A turbo pressurizes the air
coming into the cylinder so the cylinder can hold more air.

If you stuff twice as much air in each cylinder,
you can burn twice as much gasoline.
In reality, it's not quite a perfect ratio like that,
but you get the idea. The Bugatti uses a maximum
turbo boost of 18 PSI to double the output power of its engine.

Therefore, turbocharging allows Bugatti to cut the size
of the engine from 16 liters back down to a more manageable 8 liters.

To generate that much air pressure,
the Bugatti requires four separate turbochargers arranged around the engine.




The second thing Bugatti engineers did,
both to keep the RPM redline high and to lower lag time
when you press the accelerator, was to double the number of cylinders.
The Bugatti has a very rare 16-cylinder engine.

There are two easy ways to create a 16-cylinder engine.
One way would be to put two V-8 engines in-line with each other.
You connect the output shaft of the two V-8s together.
Another would be to put two in-line 8-cylinder engines beside one another.
The latter technique is, in fact, the way Bugatti created its first
16-cylinder cars in the early 20th century.
For the Veyron, Bugatti chose a much more challenging path.
Essentially, Bugatti merged two V-8 engines onto one another,
and then let both of them share the same crankshaft.
This configuration creates the W-16 engine found in the Veyron.
The two V's create a W.

Then, Bugatti started piling on features to make the engine even better...


The Engine: Special Features
The special features of the Bugatti W-16 engine are amazing.
For example:

The engine has four valves per cylinder, for a total of 64 valves.
It has a dry sump lubrication system borrowed from Formula 1 race cars,
along with an intricate internal oil path to ensure proper
lubrication and cooling within the 16 cylinders.
It has electronically controlled, continuously variable cam timing
to create optimal performance at different engine rpm settings.
It has a massive radiator to deal with all of the waste heat
that burning 1.33 gallons of gasoline per minute can generate.
Everything about the engine is superlative.
And it is remarkably compact.
It measures just 710 mm (27 inches) long, 889 mm (35 inches) wide and
730 mm (28.7 inches) high.
This is the beauty of Bugatti's W-16 approach --
the engineers managed to fit 1,000 hp into a reasonably sized package.

In order to harness all of this horsepower and torque, you need an amazing transmission...
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#129967 - 2nd Dec 2005 9:23am Re: Bugatti Veyron : In detail (Fastest Production Car)
Mark Online   Reading


Wiki Master

Registered: 9th Nov 2003
Posts: 20958
Loc: Wirral
The Transmission

The transmission is unique,
in particular because it has to harness about twice as
much torque as any previous sports-car transmission.

It has:
  • Seven gears
  • A dual clutch system
  • Sequential shifting
  • A paddle-driven, computer-controlled shifting system



This computer-controlled system is identical to the sort of system
found in a Formula 1 car or a Champ car.
There is no clutch pedal or shift lever for the driver to operate --
the computer controls the clutch disks as well as the actual shifting.
The computer is able to shift gears in 0.2 seconds.


It would be almost impossible for all of the torque available
from the W-16 engine to flow out to just two wheels without constant wheel-spin.
Therefore, the Veyron has full-time all-wheel drive.
By applying the engine's power to all four wheels through a computer-controlled
traction-control system, the car is able to harness
all of the engine's horsepower, even at full acceleration.

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#129968 - 2nd Dec 2005 9:26am Re: Bugatti Veyron : In detail (Fastest Production Car)
Mark Online   Reading


Wiki Master

Registered: 9th Nov 2003
Posts: 20958
Loc: Wirral
The Tires



Even the tires for the Veyron are unique.
They're specially designed by Michelin to handle the stress
of driving at 250 mph. The tires need to be sticky like a
race car's and able to handle 1.3 G's on the skidpad. However,
they also need to last longer than the 70 or so miles of a typical race tire.

Michelin therefore created completely new tires to handle
the Veyron's unique requirements. In the rear,
the tires are 14.4 inches (36.6 cm) wide.
Specifically, the tires measure 245/690 R 520 A front
and 365/710 R 540 A rear,
where 245 and 365 are the width in millimeters (9.5 and 14.4 inches respectively).
The rims are 520 mm and 540 mm in diameter (approximately 20 inches).
These tires, in other words, are massive --
the rears are the widest ever produced for a passenger car.

The tires use the Michelin PAX system.
Their pressure is monitored automatically, and they can run flat
for approximately 125 miles (201 km) at 50 mph (80 kph).
According to Michelin, the run-flat detection system
"plays an integral role in active safety in PAX System.
Its role is to inform you of a loss of pressure,
either gradual or sudden."
Once warned of an air leak by the PAX system,
you can reduce your speed and head toward a tire repair center.

One advantage of the PAX system and its run-flat ability is
that it eliminates the need for a spare tire.
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#129969 - 2nd Dec 2005 9:34am Re: Bugatti Veyron : In detail (Fastest Production Car)
Mark Online   Reading


Wiki Master

Registered: 9th Nov 2003
Posts: 20958
Loc: Wirral
The Body

According to one of the Veyron's designers,
the biggest challenge in creating the Veyron was the aerodynamics.
How do you keep a 250-mph passenger car on the road?



An F-1 car or a Champ car can travel at 250 mph or more,
but they have a uniquely designed body, a single driver
lying in a reclining position, just an inch or so of ground
clearance and an aero-package made up of large wings to
generate massive downforce. The Bugatti, on the other hand,
is trying to look like a normal car and seat two passengers.

The Veyron's dimensions help to some extent.
The car is 79 inches (200 cm) wide, 176 inches (447 cm) long
and only 48 inches (122 cm) high.
Keep in mind that a Hummer 2 is 81.2 inches wide.
The Bugatti is extremely wide for its height.



The underside of the Veyron, like an F-1 car,
is streamlined and venturi-shaped to increase downforce.
There is also a wing in the back of the Veyron that extends
automatically at high speed to increase downforce and keep
the car glued to the road.
According to Popular Science: Hypercar,
"With the moving tail spoiler we've got enough downforce now,
about 100 kg (221 pounds) at the rear and 80 kg (177 pounds)
at the front at top speed."



The Bugatti Veyron's tail wing creates downforce at high speeds.



Engine and air snorkels


If you look at the above photo, you'll notice two snorkel-
like devices, one on either side of the engine, on the roof of the car.
The Veyron uses these to manage airflow.
The Veyron has three reasons for managing airflow:

At maximum power, the engine is consuming 45,000 liters of air per minute.
At maximum power, the engine is burning 1.33 gallons of gasoline per minute
and needs to dissipate all of that heat through its radiators.
When stopping, the brakes need to dissipate heat -
especially important when rapidly accelerating and braking on twisty road courses.
You can see how the Veyron handles these requirements in the photo below.
The engine of the Veryon sits behind the driver, so roof-mounted snorkels,
the rear-deck vents and side-mounted scoops bring air to the engine and rear brakes.




The size of the engine and transmission,
along with the four-wheel-drive system and the four drive shafts,
along with the opulence of the passenger compartment and the car's
oversized dimensions, all add weight. Even though the body is
sculpted in carbon fiber to minimize its mass, the car weighs in
at about 4,300 pounds (1,950 kg). For comparison,
a Dodge Viper weighs about 1,000 pounds (454 kg) less.

Speaking of the opulent interior...
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#129970 - 2nd Dec 2005 9:38am Re: Bugatti Veyron : In detail (Fastest Production Car)
Mark Online   Reading


Wiki Master

Registered: 9th Nov 2003
Posts: 20958
Loc: Wirral
The Interior

The Veyron seats two in lavish style.
The interior is swathed almost completely in leather --
the dash, seats, floor and sides are all leather.
Only the instruments and a few metal trim pieces interrupt the leather experience.






The car also surrounds its occupants with every sort of
electronic nicety, including a remarkable stereo system,
navigation system, etc.

Is all of this worth a million bucks? Who knows.
But regardless, the Veyron represents a remarkable technological achievement.

The Veyron is also likely to represent the far end of the
automotive performance spectrum for some time to come.
To create a car much faster will require adding even more weight,
and delivering even more power to the wheels.
The added weight means diminishing returns in the power-to-weight domain.
Additional power means more wheelspin.

Look at a Champ car and consider how radical its appearance is
compared to a passenger car. Consider also that a Champ car
does not go much faster than the Veyron.
The Veyron probably approaches the outer limits of the
passenger car envelope, and we are unlikely to see much beyond
the Veyron in terms of performance.

This is, in other words, as good as it gets.
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#129971 - 2nd Dec 2005 10:20am Re: Bugatti Veyron : In detail (Fastest Production Car)
Mark Online   Reading


Wiki Master

Registered: 9th Nov 2003
Posts: 20958
Loc: Wirral
See what Jeremy Clarkson Thinks
Manufacture Reviews Click Me

There are so many one off's with this car,
i guess we can always dream ?
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#129972 - 3rd Dec 2005 2:31pm Re: Bugatti Veyron : In detail (Fastest Production Car)
CorsaJohn Offline
Forum Addict

Registered: 20th May 2004
Posts: 1700
Loc: wirral
i was talkin to adam about this car today as i read a review on it

totaly amazin
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#129973 - 3rd Dec 2005 5:13pm Re: Bugatti Veyron : In detail (Fastest Production Car)
Scooby Offline
Forum Veteran

Registered: 9th Nov 2003
Posts: 5327
Loc: Birkenhead, Wirral.
That is simply AWESOME thumbsup

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#129974 - 5th Dec 2005 1:02am Re: Bugatti Veyron : In detail (Fastest Production Car)
Anonymous
Unregistered


interior is bootifull laugh

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#129975 - 5th Dec 2005 12:53pm Re: Bugatti Veyron : In detail (Fastest Production Car)
scoop Offline
Wiki Addict

Registered: 18th Nov 2004
Posts: 7238
Loc: Leuchars
God damn swish. Seen the width of the tires???? its madness
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#129976 - 5th Jan 2006 3:45pm Re: Bugatti Veyron : In detail (Fastest Production Car)
Scooby Offline
Forum Veteran

Registered: 9th Nov 2003
Posts: 5327
Loc: Birkenhead, Wirral.
As posted in another topic :

Engine Video's

Click below :

Bugatti web site

click english
click models
click veyron 16:4
click engineering
click engine
then click ledgends from the 1001hp

the are several cool videos of how its engine works.

=======================================================================

Also posted in another topic :

Top Gear Video of the Bugatti review (1 Hour)

Click to Watch the top gear episode

Great Viewing thumbsup

==========================================================================

The video's are simply amazing, W16 engine smack 4 Turbo Chargers smack

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#129977 - 6th Jan 2006 3:39pm Re: Bugatti Veyron : In detail (Fastest Production Car)
Anonymous
Unregistered


2 engines aswell. i want one! it was so funny watchin jeremy clarkson ring insurance company and they didnt insure it lol

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#129978 - 27th Feb 2006 7:02pm Re: Bugatti Veyron : In detail (Fastest Production Car)
Mark Online   Reading


Wiki Master

Registered: 9th Nov 2003
Posts: 20958
Loc: Wirral
Bugatti Veyron virsus the Mclaren F1 Click Me

Well its not what you would expect,
no head to head.
But nice info and extra details to see.
(The Car Naked).

Enjoy..
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