BMW Z4, Брошюра

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Electric Power Steering.
Unlike conventional, hydraulic steering systems,
the electrical steering only uses energy during
actual steering. When the steering wheel position
is constant – for example at high speed along
the motorway – the electric motor is inactive.
Optimum Shift Indicator.
Timely gear shifts are one of the most effective
and easiest ways to save fuel. This is where the
Optimum Shift Indicator in conjunction with six-
speed manual transmission comes in. It shows
the driver what gear to use in order to drive more
effi ciently. Lightweight construction.
Our engineers use aluminium where lighter
materials are more expedient, for instance in
the front section or for the suspension, in the
bonnet and in the hardtop. The six-cylinder
in-line petrol engine, for instance, is composed
of aluminium and magnesium. Making these
engines the lightest in their class. These weight
savings lead to lower fuel consumption and
better axle load distribution, for more agility,
especially in bends.
Brake Energy Regeneration. To supply a battery with electrical energy, the generator (alternator)
is permanently driven using engine power, which demands additional fuel consumption. Brake
Energy Regeneration means the generator usually only generates electricity when the driver
either takes the foot off the accelerator or the brake – previously unused kinetic energy is transformed
in coasting mode into electrical energy before being fed into the battery. In this way, electricity is
generated while coasting, without consuming fuel. Tyres with reduced rolling-resistance.
While driving, tyres are constantly changing
shape. This uses up energy and thus fuel.
Tyres with reduced rolling-resistance have an
improved design and use special materials for
their road treads and side walls, thus reducing
deformation.
Some BMW EfficientDynamics features are dependent
on the car‘s equipment and are not available for all model
variants. Your BMW partner will be happy to provide you
with information on all equipment details.
This has gone in.
The pleasure you get from driving a BMW is the result of fi ne engineering – always setting the benchmark because it is based on much more than engine
power. This is the tradition behind BMW Effi cientDynamics. It includes the visionary Hydrogen engine, already used in a number of completely
emission-free BMW  Series saloons. Also going into production soon is the BMW ActiveHybrid – an intelligent, demand-oriented combination of
internal combustion engine and electric motor. And every BMW already includes the multi-award-winning BMW Effi cientDynamics technology
package as standard that boosts dynamics even further whilst simultaneously reducing fuel consumption and CO

emissions.
Thanks to the innovative features of
Effi cientDynamics, BMW has been able
to signifi cantly reduce CO

emissions in
many models. But that’s just for starters.
We’re carrying on our research with
Effi cientDynamics – in the quest to bring you
more driving pleasure and less emissions.
And this is what comes out.
BMW Effi cientDynamics
Less emissions. More driving pleasure.