Saturday, 29 August 2009 | Levent OZLER
BMW Vision EfficientDynamics

BMW sees
technical innovations reducing both emissions and fuel
consumption as an elementary part of the brand's product
strategy, just like vehicle concepts enhancing the Sheer
Driving Pleasure so typical of BMW as a lasting, sustained
experience.
Now the BMW Vision EfficientDynamics concept car clearly
demonstrates that these objectives expressed through the BMW
EfficientDynamics develop- ment strategy are fully compatible with
the most demanding reduction in fuel consumption and emissions
complying in full with future requirements. Conceived as a
2+2-seater with plug-in full-hybrid technology, this unique car is
able to combine the performance of a BMW M Car with a standard of
fuel economy and emission management exceeding even the current
level achieved by the latest small cars in the market.
This outstanding result is made possible by the consistent
integration of BMW ActiveHybrid components, their combination with
an extremely economi- cal combustion engine, and the outstanding
aerodynamic qualities of the BMW Vision EfficientDynamics concept
car.
BMW Vision EfficientDynamics is the result of an all-inclusive
development process starting from a clean sheet of paper. This
ensures an improvement of both efficiency and driving pleasure far
exceeding the sum total of all individual components and
technologies, and is also borne out in the very emotional design of
this unique concept car. BMW Vision EfficientDynamics is therefore
an unprecedented sports car offering fascinating perspectives for
the future of Sheer Driving Pleasure combined in full harmony with
maximum efficiency.
Aerodynamic Qualities
Reflecting BMW's Know-how Gained in Formula 1
BMW Vision EfficientDynamics takes a new approach
in its design and streamlining, the body and the interior clearly
expressing the unique combina- tion of supreme efficiency and the
sporting performance so typical of the brand. Following the design
language so characteristic of BMW, this unprecedented concept car
clearly visualises both highly efficient aerodynamics and
consistent lightweight construction.
In its design, BMW Vision EfficientDynamics differs
significantly from the usual low-emission cars seen so far. And
since the principle of "form follows function" is not reduced in
this case just to the overall look of the car, but rather embraces
each and every detail, BMW Vision EfficientDynamics combines unique
aesthetic appeal with a highly emotional impact. Through its design
alone, therefore, BMW Vision EfficientDynamics clearly proves that
Sheer Driving Pleasure in typical BMW style may also be offered
without restrictions in a brand-new, innovative car
concept.
Measuring only 1.24 metres or 48.8" in height and
boasting a sweeping, arch-like roofline, BMW Vision
EfficientDynamics offers the slender silhouette of a classic Gran
Turismo. With the combustion engine fitted in front of the rear
axle, the designers have furthermore succeeded in giving the car a
very low and sleek front end, with the flow of air depending on
driving conditions being further smoothened by active louvers in
the radiator closing completely whenever the need for cooling air
is relatively low.
This efficient function follows in the footsteps of the active air
flap control already used as a feature of BMW EfficientDynamics in
many of BMW's current production models. And as a further
highlight, BMW Vision EfficientDynamics guides air smoothly and
exactly as required into the car through an active air intake at
the front.
Numerous details in the design of the body are based on the
know-how BMW has gained in Formula 1, a number of body elements
serving as air deflectors and guide vanes, like on the BMW Sauber
F1. Designed as ducts, for example, the A-pillars serve to channel
the flow of air in the same way as the rear lights with their wing
profile.
The underfloor of the car is fully covered from front to rear and
from one side to the other, thus maintaining a smooth surface to
avoid any air swirl liable to increase fuel consumption. Slender
openings around the front air dam guide the air flowing in
specifically into two closed ducts leading inside the front air dam
to the wheel arches where the air comes out again through a very
slim aperture at high speed, flowing just next to the outer wheel
flanks. This air jet rests on the front wheels like a curtain and
is therefore referred to most appropriately as the air curtain with
its highly stabilising effect.
In both its exterior and interior design, BMW Vision
EfficientDynamics stands out clearly as a strong spearhead in
technology. Many components of the vehicle are presented in full
view expressing the "transparent" character of the car as a
powerful visual feature of lightweight technology. The chassis and
sus- pension of BMW Vision EfficientDynamics are made completely of
aluminium, the roof and the outer skin on the large doors are made
almost completely of a special polycarbonate glass automatically
darkening as a function of the light shining on the car.
Emotional Design Through Sculptural Shapes and Layering
Technology
Reflecting the innovative drive concept of this unique car, the
design of BMW Vision EfficientDynamics likewise takes a new
approach in combining functional progress with a most powerful
emotional impact.
This has been achieved through the close cooperation of BMW's
Design and Technical Development Divisions starting at an early
point and continuing con- sistently throughout the entire
development process. The result is a brand-new vehicle architecture
with the drive components as well as the body and interior elements
perfectly coordinated and matched to one another with maximum
flexibility and individual style. A fully integrated design
philosophy also provided new options in using harmonised design
principles connecting the exterior and the interior and providing
an interacting effect between the two areas.
Sculptural design language giving BMW Vision EfficientDynamics a
fully harmonised, complete look ensures the proportions so typical
of a BMW sports car. The front, side, rear and roof areas, for
example, flow smoothly into one another. Dynamically contoured
surfaces and shapes, in turn, create highly attractive light and
shade effects accentuating the light and sporting character of the
car in a most emotional manner.
Layering technology developed by the BMW Group Design Division acts
as the fundamental guideline in designing the exterior and
interior. Applied for the first time in exterior design, this
technology layers one surface on top of the other, creating very
smooth seams and joints to reduce the number of components and,
accordingly, the weight of the car. As a result, BMW Vision
EfficientDynamics meets the most demanding aerodynamic requirements
without using any additional body elements, simply through the
structure of the surfaces optimised for a smooth flow of air.
Interior:
Innovative Lightweight Construction and Unprecedented Orientation
to the Driver
In the design of the interior, innovative layering
technology provides an unprec- edented symbiosis of function and
stylish shapes intentionally reduced to a minimum, consistently
implementing and visualising the lightweight principle also inside
the car.
Specific components such as the central air vent
not only serving to enhance motoring comfort but also acting as
part of the cockpit, perform several functions in one. This
multi-functionality is then presented visibly within the car, the
use of particularly sophisticated materials providing a highly
attractive combination of innovation in technology and quality
clear to the eye and the touch of the
surface.