|
Brand Expression
Brand-Building Role
The Aero X was created as a graphic answer to a simple question:
What would happen if an entire car was dedicated to expressing
Saab's heritage in a new way? The question was posed just over a
year ago by Bryan Nesbitt, executive director of design for GM
Europe. He wanted to explore the potential for developing a bolder,
more distinctive design language for Saab products.
Saab designers in Sweden drew up a number of outline proposals.
An exciting sports concept that would bring Saab's aviation and
Scandinavian roots into sharper focus was quickly chosen.
The Aero X shows how deep roots can inspire new design directions
that remain faithful to the brand's core values. It is the latest
step in a series of concepts that have each highlighted different
facets of the brand.
The Saab 9X, exhibited at the IAA Frankfurt Show in 2001,
demonstrated the multi-dynamic, versatile qualities of the Saab
brand. Its innovative, "four dimensional" format
incorporated features typical of a coupe, roadster, wagon and even a
pick-up. It was followed at the 2002 Detroit Show by the 9-3X
"cross-over coupe" concept, which combined
four-wheel-drive, off-road capabilities with a sporty, three-door
body format.
At the 2003 Frankfurt show, Saab then revealed the 9-3
Sport-Hatch concept, previewing its move last year into the
medium-size, premium wagon segment with the 9-3 SportCombi.
Now, with the Aero X, Saab has turned the dial marked
"performance" right up for the first time. And it does so
in a way only Saab can - by leveraging the potential of a
turbocharged BioPower engine and its own aviation heritage.
By using BioPower, the Saab Aero X gives an environmental
dimension to the phrase "performance with responsibility"
and expresses a strong Scandinavian tradition of respect for the
environment. And it would not be a Saab without using turbocharging
to maximize the performance potential of bio-ethanol fuel.
In looks, the Aero X is focused outside and inside on echoing the
performance-driven character of a jet aircraft. In being devoted to
expressing this theme, it is the most visually committed design to
be shown by Saab.
"The Aero X is an extreme brand statement," says Knut
Simonsson, Saab's Executive Director of Global Brand and Sales
Operations. "It puts a clear emphasis on using Saab's aviation
heritage to express sporty design.
"All our concept cars share the core values of the brand:
progressive design, sporty driving and surprising functionality.
These are the results of Saab's heritage, its story, which is about
roots in aviation, Scandinavian culture and innovative thinking.
"The Aero X clearly emphasizes sportiness more than previous
concepts, but it does so in a 'Saabish' way, drawing on the
potential of the brand's story. However, even in such a focused car
as this, there is an element of surprising functionality with the
twin storage facility.
"The Aero name itself, which we also use for our high
performance production cars, shows how much we value the brand's
aviation roots in expressing sporty performance. The Aero X opens up
new possibilities for doing this with future products in an even
more exciting way."
# # #
Wingsuits for Saab Aero X Drivers
Saab is utilising the power of its aircraft heritage to inspire
the design of the Aero X concept. And in imagining the Aero X driver
and passenger during their recreational time, it has equipped the
show car with Salomon Wingsuits destined for "free
flyers."
Saab and Salomon, the leading sports equipment supplier, have
already created a global partnership in the fast-growing field of
action and outdoor sports, sponsoring international championships
and teams in the Raid Series, Crossmax skiing, In-line skating and
Freeriding. Now they are backing the exhilarating new genre of'
"free-flying," a development of sky diving in which
Wingsuits are worn to enable participants to soar and manoeuvre in
the air.
The four-strong Salomon Soul Flyers team are the leading
exponents of this exciting new sport. Their Wingsuits feature
extending gussets between the legs and the arms and body that are
designed to harness the power of the wind during freefall, allowing
the Soul Flyers to glide around in the sky as they descend. Whereas
a skilled sky diver can achieve only half a meter of lateral
movement for every meter of descent, a Wingsuited-Soul Flyer can
challenge gravity by soaring three meters laterally for every meter
of downward travel. "It's like flying by using your own
body," says team member Loic Jean-Albert.
To achieve such a remarkable performance, Salomon has developed
strong, lightweight materials for its Wingsuit, with special seams
and stitching to withstand immense air pressures as the wearer
descends at speeds up to 112 mph (180 kph). Techniques derived from
meeting such an extreme design challenge are being used by Salomon
to innovate in other sportswear products in their range. In a
similar way, Saab anticipates adopting technical solutions and
design themes from the Aero X in future products.
The Saab and Salomon brands share a natural synergy in delivering
premium quality, innovative products for individualistic customers
.In taking inspiration from the world of flight, the Salomon
Wingsuit and Saab Aero X take this synergy to a new level.
Concept rationale
Opening up New Horizons
The Saab Aero X concept is a dynamic, two-seater sports coupé
that showcases two core brand elements: Saab's aviation heritage
and its Scandinavian roots. Here designers Anthony Lo, Alex
Daniel and Erik Rokke, who conceived this study at design
operations in Sweden, explain its significance.
The muscular shape of the Saab Aero X clearly signals its role as
a high performance driver's car, while its looks and visual appeal
show this is a design that could only come from Saab. With
innovative features typical of the brand and thrust from a 400-hp,
twin-turbo BioPower engine, it opens up new horizons for Saab's
development.
"This car has given us the opportunity to push out the
boundaries of Saab design, to explore new directions without any
constraint," explains Anthony Lo, GME's Director of Advanced
Design. "It represents our vision of what a high performance
car from Saab could look like. In making such a strong statement, it
is probably the most self-expressive, emotional design Saab has ever
produced.
"We have focused on harnessing the visual potential of
Saab's aviation roots, as well as introducing design elements in
lighting and instrumentation that have been inspired by our
Scandinavian experience."
The car's most striking visual feature -- the front-opening glass
canopy -- combines two themes, aviation and Saab design tradition.
While parallels with jet aircraft are obvious, the canopy also
"stretches" a more conventional Saab signature, the
wrap-around windshield.
The first Saab 99/900 models introduced this feature, bending the
glass screen round at its front corners to meet the A-pillars. The
"cockpit" look is now taken to its extreme on the Aero X,
with the A-pillars eliminated altogether. By contrasting dark,
tinted glazing with the pearlescent white of the show car's
bodywork, the extended wrap-around screen is emphasized even
further. The role of this feature as a key Saab 'identifier' is also
underlined by the familiar curvature of the top of the screen, where
it meets roof section, which echoes the "peaked cap" look
of previous Saabs.
"The canopy concept takes the cockpit look to a new
level," explains Alex Daniel, principle designer of the
exterior. "It makes a very bold graphic around the car's cabin
but it is more than a styling feature. It improves all-round vision
for the driver and also makes getting in and out of such a low car
rather easier. We remained consistent with Saab and Swedish design
principles in giving functionality to this form."
The purity of the exterior design is reflected by the clean
surfaces, notable for an absence of 'furniture' such as door
handles, rubbing strips or even spoilers. "To maintain the
analogy of an aircraft fuselage, the lines had to be kept stretched
and smooth flowing, without attracting the eye to any particular
point," adds Daniel.
"We wanted to represent the brand's aviation roots in an
intelligent way, without using showy gimmicks, which would not be
the Saab way." The aircraft references are there, of course,
but presented in a subtle fashion: the deep, front air intake ducts,
the 'turbofan' design of the alloy wheels and the further evolution
of the front grille with its aircraft-like central motif.
Glass theme
An innovative use of glass with illumination by LED (light
emitting diode) is a recurring theme, both outside and inside the
Aero X. "Apart from visualizing the brand's links with
aviation, this is the other main theme of the car," explains
Erik Rokke, principle designer of the interior.
"The glass industry and the manufacturing of precision
instruments is very strong in southern Sweden where we are based. We
have seen how glass surfaces are treated to give various optical
effects, how light is used with glass and how instrument displays
possess a very clear, precise imagery. It was very natural for us to
use this as an inspiration on the Aero X," adds Rokke.
Inside, the Aero X continues a Saab tradition in refining the
man/machine interface to clearly and safely present driver
information. In a development of the Night Panel feature on current
Saab cars, the entire front fascia and central console display is
now a clear zone with layered, acrylic surfaces used to display
selected information.
Techniques in sandblasting, polishing and laser-etching from the
Swedish glass industry are combined with subtle LED back and side
lighting to produce striking "3-D" imagery. Green
illumination, another Saab tradition based on aviation practice, is
retained for optimum clarity.
The design team has also fully exploited the advantages of LED's
-- compactness, long life and fast response - in both the front and
rear light detailing.
The headlamps incorporate single LED's for full and dipped beam,
previewing a development likely on production cars of the near
future. These are located behind projector lenses, the details of
which are highlighted in daytime running by green downlighting from
small LED's mounted in the top of the headlamp unit.
At the rear, there are no obvious tail-lights at all. Here, a
slim, opaque white bar, resembling the body color, runs across the
back of the car. It accommodates LED's for all rear light functions
and when a bulb illuminates its glow is diffused, disguising the
pinpoint light source.
Future Directions
In character and performance, the Aero X is the most
driver-focused design yet to come from Saab and Anthony Lo views it
an important step in helping to define future products for the
brand.
"The future is about looking back, as well as forward, so we
can interpret the special qualities that go to make up what a brand
stands for," says Lo. "However, in giving products a clear
identity, we should not feel restricted by previous design
conventions and the Aero X explores new ways of expressing what Saab
stands for.
"In showing how a focused, high performance sports car from
Saab could look, we have been able to introduce a more
self-expressive, more assertive design language, tipping the balance
away from understatement.
"The brand's roots in aviation and its rich Swedish heritage
are an important part of what makes a Saab a Saab and the Aero X
shows how these influences can be presented in a clear and exciting
way."
Interior
Shedding New Light on Interior Design
-
Pillar-less windshield for optimum vision
-
"Clear zone" fascia design replaces stylized
detailing
-
Innovative 3-D instrument and information displays
-
Illumination techniques inspired by Scandinavian glass
industry
-
Aircraft cockpit ambience with exposed interior surfaces
-
Surprising practicality with rear twin stowage facility
For the Saab Aero X, principle interior designer Erik Rokke has
created a cabin like no other, taking the opportunity to extend the
limits of design in new directions. They focused on producing a new
expression of form and functionality.
"As a concept, we are creating an interior for the fuselage
of a jet aircraft, rather than the body of car," explains Rokke.
"You could almost say this is an interior without styling. We
wanted to convey the beauty of functionality, balancing an element
of rawness with decent comfort.
"Overall, the cabin is designed to look very clean and
sleek, without fussy detailing or distracting features. The use of
smooth, glass-like surfaces on the fascia and central console is an
important means of achieving this. The simplicity of this approach
is also very much part of the Scandinavian design tradition."
In form, the interior features the elimination of windshield
A-pillars and even doors. In functionality, it breaks away from
having conventional panels of dials, buttons and information
displays that commonly adorn the interior of a high performance car.
There are no "cut-outs" for recessed dials or any
protruding buttons and switches. Instead, smooth, glass-like
translucent surfaces cover the main driver display, front fascia and
central console. These "clear zones" are used as screens
through which information is projected in an innovative way with LED
detailing, using surface treatment techniques derived from
Scandinavian glass and precision instrument making.
The overall effect is a most-modern expression of technical
design. You would not, for example, find wood veneer, chrome trim or
even carpeting inside the cockpit of a jet, and that's why these
conventional trim items are absent in such a performance-focused car
as the Aero X.
The view outside from the "pilot's" seat of the Aero X
is also remarkably clear. The deep windshield sweeps round
uninterrupted from B-pillar to B-pillar. And the view overhead,
through the panoramic glass roof, is also unobstructed, just as you
would expect to find seated at the controls of a jet. The screen has
a water-repellent "hydrophobic" coating, making windshield
wipers unnecessary, and the canopy glass also absorbs UV rays. The
light, airy ambience overcomes any claustrophobic feelings of being
hemmed in, which may be experienced in conventional two-seater
cabin.
Both occupants sit low down in deeply bolstered, leather sports
positioned well back in the cabin, adjacent to the B-pillars where
the three-point seatbelts are located. With the canopy in place,
there is generous headroom and drivers up to 6' 5" (195cm) tall
can be comfortably accommodated
Below the Aero X's canopy, all main interior surfaces are black.
Apart from the acrylic 'clear zone' panels for the main driver
display and center console, they are either left bare in carbon
fiber or covered in leather, such as the top of the front fascia and
the lower canopy sides. The only exceptions are the white leather
seat squabs and backrests, complete with Saab Active Head Restraints
(SAHR), which echo the exterior color.
There is no attempt to disguise materials with fake finishes or
to introduce unnecessary decoration and detailing. This strategy
extends to the movement of the canopy. When open, its articulated
linkages are fully exposed, and a section of the top of the fascia
even lifts off to provide a better view of the mechanisms. The gas
struts and pistons that control the canopy sides are also clearly
visible during deployment.
Instead of carpeting, the floor of the Saab Aero X is clad with
anti-slip rubber inserts; there are no panels with conventional
buttons and knobs; no defined outlets for fresh air or audio
speakers and, when the ignition is switched off, there are no
visible dials. "It was very important to keep the interior
consistent with the exterior character of the car," adds Rokke.
"We have eliminated any frills or traditional luxury features
because it is not part of our Scandinavian design tradition."
This celebration of functionality is clearly expressed by the
aluminum handle for operating the canopy, mounted on the central
console above the car's deep transmission tunnel. It mimics the type
of control lever you would see in an aircraft cockpit and its
movement is choreographed to replicate a "mechanical"
action, rising and falling in unison with the deployment of the
canopy. A simple one-touch button could have been adopted, but the
team allowed themselves this design flourish in order to reinforce
the interior's functional character.
The canopy lever is, in fact, part of a three-way
"start" function located between the seats as a very
modern interpretation of Saab's traditional, centrally-mounted
ignition key. In its flat, "down" position, the lever
doubles as a transmission selector, allowing the driver to access
automatic drive or sequential gear changing via the steering wheel
paddles. A green starter button nestles in the center of this
lever/selector unit.
Using a passive, keyless entry and exit system, the car is
brought to life as soon as the driver thumbs this button. The
previously hidden displays in front of the driver and in the central
console are activated, the illuminated dials and icons appearing to
"float in space." They are pin-sharp in definition and
have a layered, 3-D quality, resembling holograms. Their design is
one of the highlights of the interior, inspired by aviation practice
and techniques used in Scandinavian glass-making.
Three stratified layers of acrylic make up the "clear
zones" of the front fascia and central console. Laser-etched
images are embedded within these surfaces, which are each
sandblasted and polished to varying degrees. When illuminated by LED
from the back or side, the surfaces act like prisms so that
different embedded images are picked out and projected as required.
The main driver display consists of a striking 3-D analogue face,
combining a central speedometer with turbo boost and tachometer
indicators either side. Superimposed above this is a vertical scale
showing speed in 10 kph increments. This beautiful image has an
obvious aeronautical character, while communicating the visual
appeal of a precision-made instrument. Subsidiary water temperature,
oil pressure and fuel gauges are presented in a similar way in the
center of the fascia. As this is a BioPower car, the fuel gauge also
indicates the ratio of E100 and gasoline held in the tank.
In the central console, displays for infotainment, satellite
navigation and air conditioning are selected by two toggle buttons
alongside the canopy lever. The driver then chooses options and
settings via eight flush-mounted buttons in the center of the main
fascia, each identified by a different icon according to the mode
selected. Again, these images appear to be suspended in space, as if
trapped inside a sheet of glass.
"We chose green instrument illumination because this is used
in aircraft and on Saab cars. It gives the best, easiest to read
image," says Rokke. "Everything is focused on providing
the driver with clear information, avoiding any distraction or
potential confusion. We looked at the techniques used by
Scandinavian companies to give glass different properties in
reflecting and refracting light. With this car, we were really able
to exploit the potential of these techniques for the first
time."
The design team chose to avoid using 'touch screen'
functionality. "We wanted to preserve the positive, tactile
feel of using a button," explains Rokke. "In a sporty car
such as this, the driver should have a direct interaction with the
controls. This is where buttons are better than using zones in a
touch screen. As we see in the movement of the canopy lever, there
should appear to be some kind of mechanical action or connection,
even though we are using electronics."
The slim, leather-trimmed steering wheel carries gear selector
paddles and remote control buttons on its two spokes. The center
boss is backlit by LED to illuminate the Saab logo.
To underline the car's performance focus, all driving control
surfaces, apart from the black steering wheel, are highlighted in a
brushed aluminum finish. These include the steering wheel paddles,
indicator stalks, the cockpit canopy lever and the accelerator and
brake pedals, which also have black, anti-slip inserts.
A final design flourish is to be found at the rear of the Saab
Aero X, giving it an element of surprising practicality, as you
would expect from a Saab car. Concealed under the opening rear hatch
window is a twin stowage facility. Beneath
the main cargo floor is an extending drawer, operated by remote
control, which on the show car provides stowage for Soul Flyer*
gear from Salomon, the leading supplier of freedom action sports
equipment. It could also be used to separate potentially mucky
outdoor gear from the rest of the luggage.
Exterior
Stretching the Envelope
In exterior design, the Aero X fulfils its mission as the
first car from Saab to focus on communicating the brand's unique
aviation heritage. And, as you would expect from Saab, it does
so in an intelligent, typically "Saabish" manner.
-
Body shape to resemble jet aircraft fuselage
-
Glass canopy opening eliminates doors and A-pillars
-
Easier access to low-slung cabin
-
Prominent jet aircraft-style front air intakes
-
All LED exterior lighting
-
Further evolution of Saab three-port grille
-
'Turbofan' wheel design for brake cooling
In concept, the entire form of the Saab Aero X's curvaceous,
low-slung bodywork is a dramatic evocation of the Svenska Aeroplan
AB's roots in aircraft design. Its innovative cockpit canopy and
aviation motifs at the front and rear are designed to come together
as a metaphor for the fuselage of a jet. It is, in essence, an
"aircraft for the road" ... and jets don't have doors!
Principle exterior designer Alex Daniel explains: "This is
what a high-end sports car from Saab could look like and, as
a pure driver's car, it is intended to create a strong emotional
response. It was also important to keep a clear Saab identity, so
the shape of the wrap-around screen and elements of the front and
rear styling are designed to echo aspects of previous and current
Saab models."
Stretching the design envelope opens up the prospect of full
180-degree vision for the occupants of the Aero X, as well as better
access to its low-slung cabin. In doing so, the car presents
aircraft-inspired solutions that question conventional design
orthodoxy.
The tautly drawn shape of the Aero X gives it the appearance of
being poised ready for take-off. With a roof height of just 1276 mm
(50 inches), the coupe's cabin sits exceptionally low to the ground.
The flowing contours of the carbon fiber bodywork around the long
hood and steeply raked rear pillars are interrupted only by muscular
blisters to accommodate massive "turbofan" wheels (22 inch
front/ 23 inch rear). Short front and rear overhangs combine to give
the coupé a body language and attitude that promise exceptional
performance.
An exterior tour would normally start at the front of the car or,
in the case of the Aero X, the nose of its "fuselage," but
that would ignore its most innovative and striking feature, the
cockpit "canopy."
To gain entry, the Saab Aero X pilot and passenger do not use
doors. Instead, the car's canopy swings open, just as you would see
on a jet aircraft. This assembly comprises three sections: the
panoramic glass roof and wraparound windshield, the side windows and
side body panels, and the top section of the interior fascia.
Operated from the outside by remote control, the canopy's movement
is pivoted from the front and choreographed to simultaneously move
upwards and forwards, revealing the two-seater cabin underneath.
The sense of theater this brings to the Aero X is underpinned by
practical driver benefits. The canopy's wrap-around screen allows
Saab to completely eliminate the A-pillars, opening up an
uninterrupted field of vision for the driver through 180 degrees, or
as far the head can turn. This makes a significant contribution to
real-life safety, allowing the driver to see more clearly,
particularly in moving traffic conditions when the presence of the
A-pillar can be obtrusive. In combination with the panoramic glass
roof above, the occupants of the Aero X enjoy unrivalled visibility
and the illusion of sitting in an open car.
Another practical benefit of this design is more convenient entry
and exit because there is no low roof to duck under. It is also
easier for the driver or passenger to step across the car's
substantial chassis sill, which is deep and wide for structural
stiffness. As a further benefit, the Aero X can be parked in
relatively tight spaces. There no need to allow room for opening the
doors, which are traditionally very wide in this type of car to make
entry and exit easier.
The frame of the canopy assembly and the two connected side
panels are made from carbon fiber for high strength and lightness.
The complete canopy movement -- on opening, the side panels are
first pushed out, then pulled back in alongside the rising
windshield/side window/ roof section -- is achieved by using
articulated hinge mechanisms.
The vertical clearance required for opening the canopy has been
minimized to just 71 inches (1.8 meters) and a series of anti-pinch
sensors ensure the closing operation stops automatically in an
emergency. The canopy is tightly located in seating channels along
the cabin sides, ensuring there is a completely weatherproof seal.
The nose of the Aero X is also focused on reinforcing the jet
aircraft metaphor. Apart from the central grille, two deep and wide
air ducts are the most graphic feature. These are intended to
symbolize the prominent air intakes for the engines of a jet.
However, as this is a Saab design, their purpose is more than
cosmetic and they are designed to feed air to the turbo intercoolers
either side of the Aero X's V6 powerplant. LED driving lights are
also neatly located in the outboard, forward facing edge of each
duct.
The grille treatment is a further evolution of the traditional
three-port "face" of Saab cars. The Aero X presentation
stretches variations already seen on the 9X concept and current 9-5
models even further. The main grille in brushed aluminum is now
deeper, with a bolder horizontal central element, or bar,
symbolizing the wings and fuselage of an aircraft.
The headlamp units are mounted in the residual outer elements of
the former three-port grille design. They feature as a development
of LED technology by using extremely powerful, slightly
larger bulbs, with just two required for main beam and one for
dipped in each lamp unit. Echoing the optical effects to be found in
the interior, they appear to contain deep precision-made, chamfered
glass projector lenses.
The bottom of each headlamp unit appears to run, or
"melt" like ice, towards the center of the nose. During
daylight running, the units are also softly down-lit by small
invisible LED's in a green hue, the same color as used in the
interior.
The use of compact LED technology has allowed the design team to
keep the front bodywork tight to the wheel-arches, reducing the
length of the car's front overhang.
Moving rearwards down the long hood, the complete absence of any
shut lines is immediately apparent. This is because the entire front
section of the car, including the hood and front fenders, pivots up
from the nose giving excellent access to the engine compartment and
front suspension. This feature, together with the elimination of
doors and exterior handles, contributes to the clean flow of the
bodywork, giving it a cohesive quality, further resembling the look
of an aircraft fuselage.
The design of the slender side mirrors -- there are no doors --
is probably the only concession to function not dictating form. They
feature an aluminum-finished bottom section, a playful visual
reference to the vestigial wings of an aircraft. In contrast, the
form of the huge aluminum wheels is intended to help cool the
brakes. The 11 asymmetrically shaped spokes are aligned to extract
air from around the brakes when the car is in motion, while also
visually referencing the blades of a turbofan jet engine.
The pearlescent white bodywork sweeps up at rear, framing a deep,
black "cut-out" section in exposed carbon fiber, which
culminates in an almost flat line below the rear window. Continuing
the Aero X design metaphor, this "black zone" is intended
to represent the exhaust and afterburner chamber of a jet aircraft,
within which the twin exhaust is located. The line of the zone is
also a subtle visual reference to the cut-out shape of the rear
lights in classic Saab 900 models.
There are, in fact, no obvious tail-lights at all on the Aero X.
This is because an opaque white bar, resembling the body color, runs
across the back of the car at the top of the "black
zone." It accommodates LED's for all rear light functions. When
a light illuminates, it is diffused and softened, appearing to have
a free form without a pinpoint light source.
The short tail incorporates an opening rear hatch window and an
element of surprising practicality, as you would expect to find in a
car from Saab. The innovative twin stowage facility features
a pullout, storage drawer -- operated by remote control -- under the
cargo deck which is accessed separately through the opening rear
window. The face of this drawer is effectively hidden within the
'black zone'.
"Looking at the exterior as a whole, we wanted to create a
flowing, curvaceous shape that is interesting to look at from
different angles," adds Daniel. "It was important to avoid
any hard edges or corners so we could maintain the impression of a
smooth aircraft fuselage. We chose to ignore obvious gimmicks, such
as wings or spoilers, because that would not be faithful to Saab
design principles."
Powertrain and Chassis
Saab BioPower for 'Green Performance'
On the ground and in the air, the Aero X promises exceptional
levels of performance. The BioPower V6 twin-turbo engine not
only delivers impressive power, it also offers the prospect of
zero fossil CO2 emissions.
-
Next step in Saab BioPower technology
-
400-hp, 2.8-liter V6 engine
-
100 percent bioethanol for zero fossil CO2 emissions
-
Saab Active Chassis for greater driving safety
-
All-wheel-drive with variable front/rear torque split
-
Seven-speed, double clutch automated manual transmission
The Aero X concept showcases the potential of Saab BioPower to
offer drivers 'green performance': increased engine power with a
greater regard for the environment.
Running on 100 percent bioethanol, a renewable and sustainable
fuel, its advanced 2.8-liter V6 BioPower engine delivers 400-hp
maximum power at 5,000 rpm and massive torque of 369
lb. ft. (500 Nm) between 2,000 and 5,000 rpm. Computer simulations
anticipate zero to 62 mph (100 kph) acceleration in just 4.9 seconds
and a 155 mph (250 kph) (limited) top speed.
For optimum handling, the powertrain is mounted entirely behind
the front axle line, giving the Aero X a near perfect
50/50 weight
distribution. All-wheel-drive,
with a variable torque split between the front and rear axles,
provides superb traction and Saab Active Chassis, with continuously
variable damping, gives excellent real-life driving safety and
control.
Maximum BioPower
By combining bioethanol with turbocharging, Saab BioPower
exploits the high octane performance of this fuel, as well as its
environmental benefits. The technology is already well-proven by the
outstanding sales success of the Saab 9-5 2.0t BioPower in Sweden
and its introduction on other markets.
For the Aero X, Saab takes BioPower to a new level by using pure
bioethanol (E100) fuel, with a higher octane rating of 106 RON
compared to gasoline's 95 RON. Using a 12:1 compression ratio and
twin turbochargers running at 14.5 psi (1.0bar) boost, this
high-feature engine delivers an impressive 143-hp/liter.
Turbocharging with E100 fuel allows the use of a higher compression
ratio - giving more engine power - than is possible with gasoline
because of the risk of harmful ""knocking"" or
pre-detonation.
The all-aluminum, 24-valve, four-cam engine is a high performance
development of the current version in the Saab 9-3 range. For the
Aero X, it is longitudinally installed and features a Spark
Ignited Direct Injection system (SIDI) for optimum combustion;
variable inlet and exhaust cam phasing for improved breathing, and
dry-sump lubrication for a lower chassis installation and reduced
oil pumping losses. Both turbochargers have variable geometry
turbine (VGT) wheels to give a quick low-end response.
More durable valves and valve seats are fitted, together with
bioethanol-compatible materials in the fuel system, including the
tank, pump, lines and connectors. The addition of the SIDI system
ensures the same cold starting performance as a normal gasoline
engine.
The 32-bit engine management system simultaneously controls the
ignition timing, fuel injection, turbo boost pressure, air mass
measurement and the throttle setting. For minimized exhaust
emissions, the two close-coupled catalysts are equipped with
electronically controlled, secondary air injection, which gives
extremely quick ""light-off"" following cold
starts.
By using 100 percent bioethanol, the Aero X driver can enjoy
""supercar"" levels of performance -- without
raising atmospheric levels of CO2, the
""greenhouse"" gas that is regarded as a major
contributor to global warming. Bioethanol fuel is produced
commercially from agricultural crops or forest residues. Unlike
gasoline, its consumption does not add more CO2 to the atmosphere
because emissions during driving are balanced by the amount of CO2
that is removed from the atmosphere when crops for conversion are
grown. In this way, the CO2 already present in the atmosphere is
simply recycled, whereas the use of a fossil fuel, such as gasoline
or diesel, releases new amounts of CO2 which have been locked away
underground.
"Turbocharging and bioethanol make excellent partners,"
says Kjell ac Bergström, Executive Director of Saab Automobile
Powertrain AB. "In developing this BioPower V6 engine we have
been able to take the next step by using E100 fuel, pure 100 percent
bioethanol. That means there are zero fossil CO2 emissions because
we are not using any gasoline at all.
"Although the engine is optimized for E100, the engine
management system will still make adjustments for any bioethanol/gasoline
blend in the tank. So, if there is no bioethanol available, the
customer can still use gasoline at any time."
The sophisticated, seven-speed automated manual transmission uses
a wet double clutch system to allow fast, full throttle, sequential
gear changes via the steering wheel paddles. Power is transmitted to
all four wheels through a multi-plate clutch, allowing an infinitely
variable front/rear torque split.
Saab Active Chassis
Suspension is by double wishbones at the front and an independent
multi-link layout at the rear. Continuously adjustable damping (Saab
Active Chassis) is adopted for enhanced body control, ride comfort
and driving safety.
Saab Active Chassis involves processing signals from a number of
on-board sensors which measure the vehicle's vertical, lateral and
body-in-roll movements. These inputs are fed into a central control
unit, which monitors the behavior of each wheel as often as 100
times per second. It can then calculate and make small adjustments
to the valving of each relevant damper as required in just 10-30
milliseconds. Opening the valve increases oil flow to allow softer
damping, while closing the valve produces firmer damping. A range of
pre-settings can be selected by the driver.
The Aero X has stopping power to match its performance. Large
brake discs (14.9-in. x 1.33-in. / 380 x 34 mm, internally
ventilated front and rear) clasped by eight-piston, monobloc
aluminum calipers ensure rapid and virtually fade-free retardation.
February 2006 Saab
Aero X
Technical Specifications and Performance
Chassis:
Sports Coupé two-seater format,
monocoque steel construction
Rear opening cockpit canopy, carbon
fiber bodywork
Engine:
Front, longitudinally-mounted behind
front axleSaab BioPower 2.8-litre V6 turbo. 24-valve, four OHC.All
aluminium construction. E100 fuel. 12:1 compression ratio.VVT,
exhaust and inlet. SIDI (Spark Ignited Direct Injection).
Twin VGT (Variable Geometry Turbine)
turbochargers. 14.5 psi (1.0
bar) max. boost
Dry sump lubrication.Max. power: 400
hp @ 5,000 rpm (EEC)
Max. torque: 369 lb.ft. (500 Nm) @
2,000 - 5,000 rpm (EEC)
Engine management:
32-bit, ignition timing, fuel
injection, turbo boost pressure, air mass measurement, throttle
setting. Secondary air injection for quick catalysts warm up
Transmission:
Seven-speed, automated manual
transmission with double clutch system.Sequential gear changes via
the steering wheel paddles.
All-wheel-drive through multi-plate
clutch, variable front/rear torque split.
Suspension:
Front: Double wishbones, coil
springs, elec.adj. dampers, anti-roll bar.Rear: Multi-link, coil
springs, elec. adj. dampers, anti-roll bar.
Saab Active Chassis: continuously
adjustable damping control.
Steering:
Rack and pinion, hydraulic
power-assisted.
Brakes:
14.9-inch (380 mm) ventilated discs
front/rear
ABS, MBA, EBD, electronic stability
control.
Wheels/Tires:
Front: 22 x 9.0 inch, multi-spoke
alloy / 265/30 mm
Rear: 23 x 11.5 inch, multi-spoke
alloy / 325/25 mm
Kerb weight:
3,307 lbs. (1,500 kilos) (projected).
F/R distribution: 50/50 percent
External dimensions:
Length: 184.1 in. / 4675 mmWidth:
75.5 in. / 1918 mmHeight: 50.2 in. / 1276 mmTrack: 62.9 in. / 1599
mm (f); 62.2 in. / 1579 mm (r)Wheelbase: 110 in. / 2795 mm Performance
(projected): 0 - 100 kph: 4.9 secs
Top Speed: 155 mph / 250 kph
(limited)
|