BMW Seria 5 F10 – toate datele despre noul BMW Seria 5

• Cutting-edge suspension technology featured as standard,
Dynamic Damper Control and anti-roll stability coming as an
option.
• Unique throughout the entire segment: Integral Active Steering
and Dynamic Drive.

Sophisticated suspension technology for enhanced
agility and comfort.

The technically sophisticated suspension on the new BMW 5 Series
Sedan combines very sporting driving qualities with an even higher
level of motoring comfort. The double track control arm front axle
made of aluminium allows clear separation of the wheel guidance and
damping functions again in the interest of motoring comfort. Hardly
influenced in the slightest by lateral forces, the dampers are able
to respond particularly sensitively to bumps or unsmoothness on the
road. At the same time the kinematic configuration of the front
axle, with the precisely matched wheel camber, keeps the
tyres
smoothly and consistently on the road for optimum grip, ensuring
effective transmission of high lateral forces even without a
particularly firm set-up potentially detrimental to motoring
comfort.

Yet a further advantage is that adverse forces on the steering
are reduced to a minimum, the car handling even the most dynamic
driving situations with high lateral acceleration smoothly and with
superior comfort. The newly developed Integral-V rear axle likewise
made of aluminium also offers all the features for enhanced driving
dynamics and motoring comfort. Via the wheel supports, the rear
axle subframe, the swinging arm and three track arms, the rear axle
takes up drive and dynamic forces acting on the suspension with
maximum efficiency.

Innovative elastokinematic suspension of the swinging arms, in
turn, serves to set off longitudinal forces by direct, straight
spring action to the rear. Forces acting in radial and axial
direction on the swinging arm rubber mounts are thus clearly
separated from one another. And last but not least, the rear axle
ensures first-class acoustic and vibration comfort by effectively
separating the suspension from the road and the drivetrain.

On the new BMW 5 Series Sedan the double track control arm front
axle and the integral rear axle form a roll axis running almost
parallel to the road itself. This gives the car exceptionally
harmonious and stable behaviour in bends, with the front and rear
axle always interacting efficiently in their roll and transient
behaviour.

Adaptive Drive: even more dynamic and with unique
comfort.

As an option the new BMW 5 Series Sedan is available with BMW
Adaptive Drive comprising Dynamic Damper Control and Dynamic Drive
active anti-roll stability management. Controlled electronically,
the dampers adjust both to the road surface and the driver’s style
of motoring in order to prevent any undesired movement of the car
possibly caused by bumps or high lateral
acceleration.

BMW is the world’s first car maker to use the damping system
first featured in the new BMW 7 Series with adjustment of the
inbound and rebound strokes both continuous and independent of one
another. This offers a unique combination of a firm suspension
set-up and a comfortable response to bumps on the road. The driver
is able to set the damper control map himself by means of Dynamic
Drive Control, choosing from a comfortable, a normal, and a
sporting mode.

Dynamic Drive anti-roll stability reduces side roll of the car
in fast bends and in a sudden change of direction. Depending on
driving conditions, sensors determine the current side roll and
swivel motors in the anti-roll bars both front and rear quickly and
precisely build up appropriate counter-forces. This also shifts the
distribution of forces between the front and rear axles, adjusting
the car’s steering behaviour and load change according to specific
requirements in each situation and as a function of the suspension
mode chosen.

Dynamic Damper Control is available as an individual option on
the BMW 520d, BMW 525d, BMW 523i, and BMW 528i.

Precise and efficient: EPS Electric Power Steering
making its debut in the BMW 5 Series.

The new BMW 5 Series Sedan is the first car in its segment to
feature EPS Electric Power Steering. This innovative steering
system enhances both the precision and comfort of the steering
process, at the same time ensuring the handling typical of BMW with
maximum efficiency. Contrary to conventional mechanical/hydraulic
systems, steering assistance is provided in this case by an
electric motor activated only when assistance is necessary or
desired by the driver. When driving in a straight line or when
taking a bendwith a steady steering angle, on the other hand, the
consumption of energy is reduced to zero.

Precise, smooth and harmonious set-up of the steering with the
feedback typical of BMW ensures maximum steering accuracy at all
times. In the Sport mode of Dynamic Drive Control and with DSC
switched off, the degree of steering forces is slightly increased
in accordance with the style of motoring desired.

EPS serves to control steering feedback from the system with
particular precision. At the same time EPS comes as standard on the
new BMW 5 Series Sedan with Servotronic gearing steering assistance
to the speed of the car. When parking and steering at low speeds,
for example, the driver hardly has to make any effort, while at
higher speeds power assistance is intentionally reduced for optimum
contact to the road and in the interest of well-balanced
directional stability.

A further point is that EPS eliminates bumps coming from the
steering and any other adverse vibrations very effectively. And by
evaluating dynamic driving signals in an appropriate process, EPS
gives the driver authentic steering feedback particularly under
very dynamic driving conditions.

Integral Active Steering: greater agility in town,
enhanced comfort in a quick lane change.

Available as an option, Integral Active Steering is another
innovation exclusive to the new BMW 5 Series Sedan in the upper
midrange segment. IAS combines the Active Steering on the front
wheels already available on the former model with rear-axle
steering, the steering angle and steering assistance therefore
being controlled for the first time both front and rear by electric
motors.

On models fitted with Integral Active Steering, steering forces
are controlled by Servotronic and the steering angle is
masterminded by an additional active steering transmission acting
on the front axle, in each case as a function of road speed. At the
same time the system also varies the steering angle of the rear
wheels through a concentrically arranged motor acting through
spindle drive on the rear axle.

Both front and rear, Integral Active Steering adjusts the
steering angle through an electric motor masterminded by a control
unit receiving data on wheel rotation speed, movement of the
steering wheel, the yaw rate and lateral acceleration to ensure
optimum steering behaviour under all conditions.

Active Steering on the front wheels enables the driver to
manoeuvre the car smoothly and easily at low speeds with just small
movements of the steering wheel and without crossing over his
hands. At higher speeds, in turn, the same movement of the steering
wheel turns the wheel by a smaller angle for optimum precision when
steering into bends. Turning the rear wheels by up to 2.5o,
Integral Active Steering further enhances the agility and
manoeuvrability of the car in city traffic and on winding mountain
roads, with the rear wheels turning opposite to the steering angle
of the front wheels
at speeds of up to 60 km/h.

This not only reduces the turning circle by approximately 0.5
metres, but also increases the driver’s motoring comfort by
reducing the steering effort required.

At higher speeds Integral Active Steering gives the car an
extremely comfortable and superior response when changing lanes and
in bends, with the rear wheels turning in the same direction as the
front wheel, the BMW 5 Series Sedan therefore following the course
set out by the driver precisely and smoothly in every situation.
When changing direction under dynamic driving conditions, the car
is therefore able to master a high level of lateral acceleration
without the yaw rate increasing to the same extent.

This ensures a significant increase in motoring comfort, with
these two factors being kept apart.

Dynamic Drive Control: the ideal set-up for every
situation.

The new BMW 5 Series Sedan sets new standards in the upper
midrange segment not only in terms of driving dynamics, but also in
its driving comfort. Right from the start the suspension technology
featured as standard provides a good balance of driving dynamics
and comfort. And depending on driving conditions as well as
individual preferences, the driver may place the emphasis on both
the sporting and/or the comfort character of the new sedan.

All this is made possible by Dynamic Drive Control which, in
conjunction with the optional Sport Automatic, Integral Active
Steering and Dynamic Damper Control or, respectively, Adaptive
Drive, comes as standard on the BMW 5 Series Sedan. Dynamic Drive
Control masterminds the progressive action of the gas pedal, the
response of the engine, the steering assistance map, the thresholds
of DSC Dynamic Stability Control and, where fitted, also the
dynamic gearshift of the automatic transmission and the control map
on Dynamic Damper Control.

The driver is able to set the suspension configuration he
prefers simply by pressing a button on the centre console, using a
toggle switch to choose among the NORMAL, SPORT and SPORT+ modes.
In conjunction with Dynamic Damper Control and, respectively,
Adaptive Drive, there is also the COMFORT mode for a particularly
smooth style of motoring. All this enables the driver to activate a
pre-configured, fully harmonised set-up put together individually
through appropriate adjustment of the car’s drivetrain and
suspension components.

On the road the differences between the individual modes come
out very clearly indeed. The SPORT mode, for example, provides far
more direct steering behaviour and a more spontaneous, direct
response to the gas pedal. In addition, Dynamic Drive Control
enables the driver to choose an individual configuration for the
SPORT mode to meet his particular requirements.

Through the iDrive control system, therefore, the driver is able
to choose either the normal or the sporting set-up for both the
drivetrain and suspension components. Hence, he may if he wishes
use the sporting set-up on the drivetrain components even if road
conditions would not suggest a harder damper configuration.

Another button clearly recognisable by a pictogram symbolising
the reduction of stability enables the driver to choose the
appropriate DSC setting. As an example, he may activate a special
traction mode for starting off and driving more easily on loose
sand or in deep snow. This is done by DTC Dynamic Traction Control,
a special mode of DSC, raising the response thresholds in Driving
Stability Control. The DTC function for Driving Stability Control
is also activated in the SPORT+ mode, intentionally allowing slight
slip on the drive wheels in order to take bends in a controlled
power slide.

Keeping the additional button pressed down, the driver is able
to fully deactivate Driving Stability Control. This DSC-Off mode
activates an electronic locking function on the rear axle
differential for a more sporting and ambitious style of motoring,
for example when accelerating out of a bend or hairpin.

To optimise traction a drive wheel spinning when accelerating
out of a tight bend is slowed down appropriately, with pulling
forces being maintained through the other, opposite wheel on the
axle.

Lightweight brake system: free of fading, precise
and comfortable.

Reliable brakes free of fading, offering comfortable and
convenient control, and extremely precise dosage help to further
enhance the dynamic driving qualities of the new BMW 5 Series
Sedan.

The new BMW 5 Series comes with lightweight brakes in
swing-calliper technology and with inner-vented brake discs, where
the friction ring is riveted on to the aluminium cover. This
principle patented by BMW and now also used by other car makers,
together with the aluminium callipers in frame design on the front
axle, serves to significantly reduce unsprung masses.

Depending on the engine, the brake discs measure up to 374
millimetres or 14.7″ in diameter. Together with these large brakes,
the wheels fitted as standard are also larger than on the previous
model. All versions of the sedan come on light-alloy wheels
measuring 18 inches on the new BMW 550i and 17 inches on all other
models. The tyre dimensions, in turn, are 245/45 R 18 on the top
model and 225/55 R 17 on the other cars.

The brake system is supported by DSC Dynamic Stability Control
with a wide range of functions. Over and above its stabilising
effect, DSC thus incorporates further functions for safe and
dynamic motoring at all times. These include the ABS anti-lock
brake system, ASC Automatic Stability Control, Trailer Stability
Control, CBC Cornering Brake Control as well as DBC Dynamic Brake
Control automatically maximising brake pressure on the two axles as
soon as the system „sees” that the driver wishes to brake hard.

Under extremely high brake temperatures, an appropriate increase
in brake pressure prevents any fading, while regular Dry Braking
optimises brake performance in the wet and the Brake Standby
function builds up moderate brake pressure whenever the driver
takes his foot off the brake pedal abruptly. And last but not
least, the Start-Off Assistant supports the driver when setting off
on a gradient.

Electromechanical parking brake and Auto-Hold
function.

The electromechanical parking brake on the new BMW 5 Series
Sedan is activated by pulling the appropriate button on the centre
console in one simple process. To release the parking brake, all
the driver then has to do is press the same button while at the
same time pressing down the brake pedal itself. This avoids
unintended release of the parking brake with the ignition switched
off. And while driving, finally, the driver is able to activate an
ABS-controlled emergency braking function by pulling the parking
brake button longer than usual.

The electromechanical parking brake comes complete with an
Auto-Hold function. This combination quite unique in the market
serves in particular to enhance motoring comfort in stop-and-go
traffic. As soon as the car comes to a standstill, Auto-Hold
automatically holds the car in position by exerting constant
pressure on the brakes also on a gradient, until the driver presses
down the gas pedal.

So he is not required to keep the brake pedal pressed down while
the car is at a hold. The Auto-Hold function is activated and
deactivated by a separate button on the centre console. Driving
dynamics

intelligently controlled: Integrated Chassis
Management and FlexRay technology.

The systems incorporated in the new BMW 5 Series Sedan in the
interest of enhanced driving dynamics are perfectly connected by
Integrated Chassis Management (ICM). This high-performance
electronic control function analysing the car’s driving behaviour
by evaluating numerous sensor signals at one central point,
coordinates the drivetrain and suspension functions within
fractions of a second to provide maximum stability under all
driving conditions. And even when conditions change suddenly – for
example on changing surfaces, when spontaneously turning the
steering, accelerating or applying the brakes abruptly – ICM
responds by intervening precisely in the DSC actuators and, where
fitted as an option, by acting on the Integral Active Steering and
Adaptive Drive.

Interaction of the car’s suspension control systems and the
drivetrain is equally unique and unparalleled, the high-speed
FlexRay data transmission system serving to coordinate all systems
and sub-systems fast and reliably. Developed by a consortium of
specialist companies to production standard under the guidance of
BMW, FlexRay offers a data transfer capacity never seen before, 20
times higher than with a conventional data transmission system. BMW
is the world’s first car maker to introduce FlexRay technology in
its production models.

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