The BMW Vision EfficientDynamics concept car is a 2+2
sports car which epitomizes BMW's latest design philosophy
of lightweight, high performance and lower emissions.
The concept was unveiled at the 2009 Frankfurt Motor Show.
It also paved the way for the production BMW i8 supercar.
The Vision Efficient-Dynamics Concept
is the future of BMW design.
The BMW Vision EfficientDynamics Concept offers the performance
potential of a BMW M vehicle, but also a standard of fuel
efficiency and emission management that exceeds the current
levels achieved by the latest compact cars. This is due
to the combination of BMW ActiveHybrid components with
an extremely economical combustion engine, and outstanding
The hybrid drivetrain of the BMW Vision EfficientDynamics
Concept features a 1.5 litre, three-cylinder turbodiesel
engine which is located just forward of the rear axle.
Fuel is injected by the latest generation of High Precision
Direct Injection, and the turbocharger features variable
intake geometry for maximum efficiency. Engine output
is 163 hp with peak torque of 214 lb-ft. Power from the
turbodiesel engine is delivered to the rear axle through
a double-clutch transmission (DCT).
The engine is complimented by a pair of electric motors.
At the rear one compact electric motor is located between
the diesel engine and the transmission. This motor develops
a consistent 33 horsepower but is able to reach a peak
of up to 51 hp over short bursts. Maximum torque for the
rear electric motor is 214 lb-ft, the power, either supporting
the diesel engine or in all-electric motoring. When coasting
or applying the brakes, the electric motor acts as a generator
and feeds electric power to the lithium-polymer battery
in the car.
The second electric motor drives the front wheels. This
motor is a hybrid synchronous motor which offers a continuous
output of 80 horsepower and peak torque of 162 lb-ft.
Extra power of 112 horsepower is available for a period
of up to 30 seconds, and, for a 10-second "burst,"
the electric motor is able to develop 139 horsepower.
The power is channeled through a 2-stage, single-speed
BMW Vision EfficientDynamics is able to run completely
under electric power, with the power of the turbodiesel
engine alone, or through an infinite combination of the
three power sources. Depending on driving conditions,
the two electric motors may be used both for accelerating
and for regenerating energy when applying the brakes and
while coasting. For a short time, such as in passing maneuvers,
the cumulative maximum output of all three engines increases
to 356 hp, with maximum torque generated by the three
engines reaching 590 lb-ft.
With this potent hybrid drivetrain the concept can hit
62 mph (100 km/h) in just 4.8 seconds, and go on to an
electronically-limited 155 mph top speed.
To further improve the performance and efficiency of the
Vision EfficiencyDynamics concept, BMW's designers and
engineers spent a great deal of time optimizing the bodywork
for minimal drag. The use of lightweight materials such
as aluminium for the chassis and carbon fibre for the
bodywork serve to improve the power-to-weight ratio and
reduce fuel consumption.
Numerous details in the design of the body are based on
the experience's BMW has gathered in Motorsport. 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 floor 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.
The 21" wheels have themselves been designed to offer
minimal drag and air resistance. The extra-large wheel
covers extending over part of the tire flanks add to the
unique, very different look of BMW Vision EfficientDynamics
from the side. The blade profile integrated in the wheels
serves furthermore to reduce the negative effect of the
turning wheels on the overall aerodynamics of the car.
The interior design of the BMW Vision EfficientDyanmics
Concept follows the same principle of lightweight efficiency
as the exterior.
The body-contoured seats, for example, are made up of
a kevlar shell, a backbone structure, and seat padding
with personalized fillings. Clearly, this combination
alone ensures comfort at a minimum weight. The driver's
and front passenger's seats are connected firmly to the
center console to form a joint interior "landscape",
while the rear seats anchored on the floor would appear
to be hovering in space. Natural materials and light colors
on the seat upholstery and all interior linings underline
the light and sophisticated atmosphere within the passenger
Futuristic styling, advanced economical drivetrain with
If there's ever a production version it'll be nothing
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