Audi TT ultra quattro concept
It is a prototype based on the Audi TT whose most salient feature is that it has very good power to weight ratio: 3.6 kilos per horsepower. It does because its mass is 1111 kilos and power, which comes from an engine "2.0 TFSI" 310 horses.
According to the manufacturer, weighs about 300 kg less than the comparable TT and to get the changes have been profound. The most powerful TT today is the Audi TT RS plus 360 horses, but not as high power to weight ratio as the prototype, but this value is in 4.23 kg / CV.
The ultra structure of the Audi TT quattro concept weighs 43 kg less than a TT production. For this purpose, the rear seats have been removed (and in its place is a cross-piece serving as reinforcement-fiber reinforced plastic, carbon "CFRP"). Has also been used this material in the central tunnel in the pillars between the side windows and roof. The floor has some magnesium parts.
Other solutions are the lightening of body parts that have no structural function, as the spoiler (carbon fiber), the base (aluminum), the hood, the side panels (the latter two parts are made of reinforced plastic carbon fiber). This material is also used inside as a decoration of the doors and center console. The seats are bacquet bearing the Audi R8 GT, whose structure is fiberglass.
Weight reduction also comes to brakes, wheels and suspension. The brake discs are made of ceramic and aluminum calipers, the wheels are made with aluminum and "CFRP" (which reduce weight in twenty kilos), the coil springs are fiberglass (involving six kilos of savings ).
The engine has also been modified to lower their weight about 25 kg and occupies less space. Audi has changed the crankcase, crankshaft, balanced trees, the flywheel and auxiliary elements that no other details. Maximum power is 310 hp and maximum torque reaches 400 Nm across a broad regime: between 1900 and 5000 rpm.
The ultra Audi TT quattro concept can accelerate from standstill to 100 km / h in 4.2 seconds. Audi says it is 1.3 seconds faster than the standard model in the measurement of acceleration from 0 to 100 kilometers per hour ", indicating that the starting model is the Audi TTS Coupé 2.0 TFSI 272 hp. The battery used to start the engine is lithium ion is located under the driver's seat (weighs 4 kg less than an equivalent lead).
The weight saving has not affected all elements of comfort, as this prototype has air conditioning and power windows. No mirrors leads, instead there are cameras. The body is painted in "white glass". |
發表於 2013-4-29 07:44 PM
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