Assistance when it's needed.
Dynamic Stability Control (DSC) on the BMW X6.
The BMW X6 features Dynamic
Stability Control (DSC) for even safer driving enjoyment. If there is a
risk of the wheels skidding, for instance, the brakes are applied selectively to
each individual wheel, whatever the surface or weather. This enables DSC to stabilise
the vehicle in milliseconds and to ensure optimum tracking. The latest-generation
DSC also contains extended functions in addition to the integrated ABS and Dynamic Brake Control (DBC) systems.
Continue: Extended Dynamic
Stability Control
The next generation.
Extended Dynamic Stability Control.
The BMW X6 offers five new DSC functions:
One: brake stand-by for reduced stopping distances in an emergency.
Two: brake drying for improved brake response in wet conditions.
Three: the hill-start assistant for worry-free hill starts without rolling backwards.
Four: fading compensation for consistent braking even when the brakes have heated
up.
Five: soft stop for smoother stops and reduced brake drive.
Back: Dynamic Stability
Control (DSC)
Dynamic Brake Control (DBC).
When, in an emergency, you apply the brake pedal quickly and with force but without
really further increasing brake pressure, Dynamic Brake Control (DBC) instantly
builds up maximum brake pressure, bringing your BMW more quickly to a halt.
Even when the driver fails to press on the brake pedal with adequate force, DBC
ensures the braking distance will be a short as possible. The DBC control unit adjusts
braking pressure to suit the current speed of the vehicle and the brake's level
of wear. Furthermore, the DBC computer is networked with the vehicle's other chassis
control systems, such as Dynamic Stability Control (DSC) and the anti-lock brake
system (ABS), which work together to ensure the highest levels of driving safety.
Dynamic Brake Control (DBC) supports the driver actively and reliably when braking
in an emergency. By electronically monitoring the speed and pressure with which
the driver applies the brake pedal, it is able to recognise an emergency braking
situation - and instantly ensures that full braking power is applied to the wheels.
This automatically puts the brake force into the ABS range of control.
This process ensures that the stopping distance is not lengthened unnecessarily
by abrupt braking. Whether the driver applies the brakes quickly or slowly, the
system responds to the driver’s actions automatically and ends brake pressure
buildup via DBC.
Dynamic Stability Control (DSC).
Dynamic Stability Control (DSC) adds to safety by facilitating vehicle control even
in adverse driving conditions or on tough surfaces.
Dynamic Stability Control (DSC) is the nucleus of the chassis control systems in
BMW vehicles. It ensures the highest possible levels of stability when driving,
and it maximizes traction of all wheels when setting off or accelerating. It is
able to detect the first signs of oversteering or understeering and helps keep the
vehicle safely on course, even if the tyres have varying levels of grip. Sophisticated
sensors permanently check how the vehicle is driving. Information comes a range
of sensors monitoring wheel rotation, steering angle, lateral forces, pressure and
yaw (degree of rotation around the vertical axis). A simulation model stored in
the DSC control unit to ensure stability ("one-/two-track model") and can be compared
information coming from the steering wheel and accelerator: if there is too great
a difference between the model and how the vehicle is currently travelling, DSC
acts to increase stability or traction.
The engine and brake management systems are targeted specifically; xDrive is also included in all-wheel
drive vehicles. Reducing or increasing the engine torque or braking individual wheels
can improve stability and traction. Active Steering’s integrated yaw regulation system can even help significantly
reduce steering effort and the extent of DSC’s contribution to stability.
xDrive.
The BMW all-wheel drive system, xDrive, ensures your BMW has the best possible traction
at all times, enhancing agility and keeping you safely on track, even on fast bends.
xDrive is the permanent all-wheel drive system from BMW: under normal circumstances,
it distributes driver power between the front and rear axles in a 40:60 ratio, and
changes this figure variably when the road surface or overall driving conditions
change.
Acting virtually instantaneously and a manner so subtle as to be go virtually unnoticed
by the vehicle’s occupants, xDrive can direct up to 100% of drive forces to
one axle. Enabling the driver to start up effortlessly even on slippery surfaces
or steep hills, xDrive routes all power to the axles with the greatest traction.
When parking, the system reacts to the need for high manoeuvrability at low speed
by opening the clutch completely so the powertrain functions optimally.
At the first sign of understeering, drive power to the front axle is reduced. If
oversteering is detected, xDrive directs more power to the front axle. Thanks to
this dynamic redistribution of power, vehicle stability returns to normal even before
the driver notices anything amiss.
Driving on a winding road or taking a fast bend in dynamic style is particularly
enjoyable with xDrive: you feel as if your BMW is being guided along the curve.
xDrive ensures that none of drive power is wasted on a loss of traction: every kilowatt
of power is effectively brought to bear on the road.
xDrive is regulated by Dynamic Stability Control (DSC) and uses information from
the latter system’s sensors to monitor road conditions. In addition, brake
force courtesy of DSC is used when there is traction difference between the two
sides of the vehicle and wheel spin is likely.
Active Steering.
The new dimension in steering comfort: Active Steering offers precision, agility
and comfort in every driving situation.
At the heart of the new Active Steering system is the planetary gear set integrated
into the steering column. An electric motor in the joint adjusts the front wheels'
steering angle in proportion to the Sedan's current speed.
When driving at lower speeds - such as in city traffic, when parking or on winding
mountain roads, Active Steering increases the size of the steering angle. The front
wheels respond immediately to small movements of the steering wheel, enabling the
driver to manoeuvre through tight spaces without needing to make multiple turns
of the steering wheel. Parking is easier and agility enhanced. At higher speeds,
bends are more gradual, demanding a smaller steering angle. Therefore, Active Steering
reduces the amount of change in the steering angle for every movement of the steering
wheel. This gives the driver the advantage of more precise steering at higher speeds,
and ensures great stability and more comfort.
If the vehicle is threatened with instability, such as by oversteering or braking
on a changeable surface, DSC identifies the problem and can use Active Steering
to help overcome it. For example, in order to reduce unsafe yaw, Active Steering
can increase the angle of steering wheels faster than even the most expert driver.
Active Steering does not interrupt the direct connection between steering wheel
and front wheels, so that even in the unlikely event of a complete failure of the
electronic systems, the BMW remains completely controllable at all times.