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Audi TT Ultra Quattro Concept
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MummyChunk
Apr 26, 2013, 2:09:29 PM4/26/13
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From AB
AUDI TT ULTRA QUATTRO CONCEPT SHEDS 300KG TO SHARPEN ITS FOCUS
TT ultra quattro concept destined for the Worthersee festival sheds
300kg (compared with closest equivalent production model) and benefits
from a power boost for its 2.0-litre TFSI engine
310PS, 400Nm between 1,900rpm and 5,000rpm
1,111kg weight yields 279PS per ton, 0-62mph in 4.2 seconds, 173mph
top speed
Extensive use of Carbon Fibre-Reinforced Polymer (CFRP),
Fibreglass-Reinforced Polymer (FRP) and magnesium reduces bodyshell
weight by 100kg
Audi engineers are waging war on excess weight, and their latest
victory is a TT 2.0 TFSI Coupe which has shed an incredible 300kg and
gained a power upgrade to 310PS, giving it a 4.2-second 0-62mph sprint
time and a top speed of over 170mph.
The TT ultra quattro concept is, as its name suggests, essentially a
study developed for next month's annual gathering of Audi enthusiasts
in Wï¿œrthersee, Germany, but it demonstrates how an intelligent mix of
materials can bring about considerable weight savings even in existing
series-production models. Work on the deployment of these materials
could conceivably inform the development of future low-volume Audi
model series.
The showcar tips the scales at a lean 1,111kg, an impressive
achievement considering it combines its potent petrol engine with
quattro all-wheel-drive. With 310PS and 400Nm of torque to propel this
pared back mass via a six-speed transmission, the result is a highly
impressive power-to-weight ratio of 279PS per ton, a blistering
4.2-second 0-62mph acceleration time and a top speed of 173mph.
The four-cylinder engine raises its game thanks to modifications to
the crankcase, the crankshaft, the balancer shafts, the flywheel, the
sump, the bolts and certain ancillary units that help to reduce the
unit's weight by 25 kilograms.
No detail was too small to escape scrutiny during the optimisation
process that culminated in the TT ultra quattro concept. With its
innovative hybrid body shell the fully fledged production TT already
boasts a low body weight of 206 kilograms (excluding detachable body
parts amounting to 98 kilograms) which bears testament to Audi
engineers' desire to account for every last gram.
The concept's body structure sheds another 43 kilograms, and with the
help of optimised detachable body parts achieves a total weight saving
of 100 kilograms.
The use of carbon fibre-reinforced polymer (CFRP) in the rear end, the
centre tunnel, the B-pillars and the roof contributes to this
significant saving, as do magnesium components in the floor and in the
hinge reinforcements.
The front brakes with their ceramic discs and aluminium fixed calipers
also make a contribution, and there are savings to be found in the
titanium exhaust system with its single centrally mounted tailpipe and
the CFRP wheels with their high-strength aluminium spokes, which shave
off a particularly impressive 20 kilograms.
Fibreglass-Reinforced Polymer (FRP) springs
Fibreglass-reinforced polymer (FRP) also replaces more conventional
steel for the coil springs in the suspension, helping to further
reduce unsprung masses. The core of the all-new springs consists of
long glass fibres twisted together and impregnated with epoxy resin. A
machine wraps additional fibres around this core, which is only a few
millimetres in diameter, at alternating angles of plus and minus 45
degrees to the longitudinal axis. These layers support each other and
act in either compression or tension. The use of FRP at this point
cuts weight by 40 per cent while still permitting good operating
characteristics.
To further hone the nimble handling which is already a TT trademark,
the developers have also concentrated on distributing the remaining
weight as effectively as possible by moving it to the centre of the
car wherever it was practical to do so. The lithium-ion starter
battery, for instance, is located in the interior under the driver's
seat. It is much smaller than a lead battery and weighs just under
four kilograms (8.82 lb).
300kg total weight saving
Overall, these lightweight construction measures leave the concept car
300 kilograms lighter than the comparable series-production car,
helping to minimise the inertial mass that the TFSI engine has to
contend with during acceleration.
The exceptional calibre of the TT ultra quattro concept is reflected
in its even more emphatic styling, the focal point of which is the
large spoiler which gives a nod to its motorsport genes. The base of
the rear wing is manufactured as a supporting component from milled
aluminium, while the wing itself is made of visible carbon fibre.
The concept car is painted in the special colour crystal white, which
is complemented by CFRP elements in the roof, the flanks and the
tailgate. In the interior the same material also adorns the door trim,
the centre console and the cross-bracing that replaces the rear seat
bench. The standard front seats are also replaced by
fibreglass-reinforced polymer (FRP) bucket seats from the R8 GT which
help to reduce the all-up weight by a further 22 kilograms.
There are no compromises on equipment behind the headline-grabbing
figures - air conditioning, electric window controls and an
electromechanical parking brake are all included, and there are even
innovations such as compact cameras in the doors which replace the
exterior mirrors and transfer images directly into the digital
cockpit.
View the attachments for this post at:
http://www.jlaforums.com/viewtopic.php?p=221058547#221058547
AUDI TT ULTRA QUATTRO CONCEPT SHEDS 300KG TO SHARPEN ITS FOCUS
TT ultra quattro concept destined for the Worthersee festival sheds
300kg (compared with closest equivalent production model) and benefits
from a power boost for its 2.0-litre TFSI engine
310PS, 400Nm between 1,900rpm and 5,000rpm
1,111kg weight yields 279PS per ton, 0-62mph in 4.2 seconds, 173mph
top speed
Extensive use of Carbon Fibre-Reinforced Polymer (CFRP),
Fibreglass-Reinforced Polymer (FRP) and magnesium reduces bodyshell
weight by 100kg
Audi engineers are waging war on excess weight, and their latest
victory is a TT 2.0 TFSI Coupe which has shed an incredible 300kg and
gained a power upgrade to 310PS, giving it a 4.2-second 0-62mph sprint
time and a top speed of over 170mph.
The TT ultra quattro concept is, as its name suggests, essentially a
study developed for next month's annual gathering of Audi enthusiasts
in Wï¿œrthersee, Germany, but it demonstrates how an intelligent mix of
materials can bring about considerable weight savings even in existing
series-production models. Work on the deployment of these materials
could conceivably inform the development of future low-volume Audi
model series.
The showcar tips the scales at a lean 1,111kg, an impressive
achievement considering it combines its potent petrol engine with
quattro all-wheel-drive. With 310PS and 400Nm of torque to propel this
pared back mass via a six-speed transmission, the result is a highly
impressive power-to-weight ratio of 279PS per ton, a blistering
4.2-second 0-62mph acceleration time and a top speed of 173mph.
The four-cylinder engine raises its game thanks to modifications to
the crankcase, the crankshaft, the balancer shafts, the flywheel, the
sump, the bolts and certain ancillary units that help to reduce the
unit's weight by 25 kilograms.
No detail was too small to escape scrutiny during the optimisation
process that culminated in the TT ultra quattro concept. With its
innovative hybrid body shell the fully fledged production TT already
boasts a low body weight of 206 kilograms (excluding detachable body
parts amounting to 98 kilograms) which bears testament to Audi
engineers' desire to account for every last gram.
The concept's body structure sheds another 43 kilograms, and with the
help of optimised detachable body parts achieves a total weight saving
of 100 kilograms.
The use of carbon fibre-reinforced polymer (CFRP) in the rear end, the
centre tunnel, the B-pillars and the roof contributes to this
significant saving, as do magnesium components in the floor and in the
hinge reinforcements.
The front brakes with their ceramic discs and aluminium fixed calipers
also make a contribution, and there are savings to be found in the
titanium exhaust system with its single centrally mounted tailpipe and
the CFRP wheels with their high-strength aluminium spokes, which shave
off a particularly impressive 20 kilograms.
Fibreglass-Reinforced Polymer (FRP) springs
Fibreglass-reinforced polymer (FRP) also replaces more conventional
steel for the coil springs in the suspension, helping to further
reduce unsprung masses. The core of the all-new springs consists of
long glass fibres twisted together and impregnated with epoxy resin. A
machine wraps additional fibres around this core, which is only a few
millimetres in diameter, at alternating angles of plus and minus 45
degrees to the longitudinal axis. These layers support each other and
act in either compression or tension. The use of FRP at this point
cuts weight by 40 per cent while still permitting good operating
characteristics.
To further hone the nimble handling which is already a TT trademark,
the developers have also concentrated on distributing the remaining
weight as effectively as possible by moving it to the centre of the
car wherever it was practical to do so. The lithium-ion starter
battery, for instance, is located in the interior under the driver's
seat. It is much smaller than a lead battery and weighs just under
four kilograms (8.82 lb).
300kg total weight saving
Overall, these lightweight construction measures leave the concept car
300 kilograms lighter than the comparable series-production car,
helping to minimise the inertial mass that the TFSI engine has to
contend with during acceleration.
The exceptional calibre of the TT ultra quattro concept is reflected
in its even more emphatic styling, the focal point of which is the
large spoiler which gives a nod to its motorsport genes. The base of
the rear wing is manufactured as a supporting component from milled
aluminium, while the wing itself is made of visible carbon fibre.
The concept car is painted in the special colour crystal white, which
is complemented by CFRP elements in the roof, the flanks and the
tailgate. In the interior the same material also adorns the door trim,
the centre console and the cross-bracing that replaces the rear seat
bench. The standard front seats are also replaced by
fibreglass-reinforced polymer (FRP) bucket seats from the R8 GT which
help to reduce the all-up weight by a further 22 kilograms.
There are no compromises on equipment behind the headline-grabbing
figures - air conditioning, electric window controls and an
electromechanical parking brake are all included, and there are even
innovations such as compact cameras in the doors which replace the
exterior mirrors and transfer images directly into the digital
cockpit.
View the attachments for this post at:
http://www.jlaforums.com/viewtopic.php?p=221058547#221058547
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