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158
ENGINEERING DETAILS
to calculate bank angle. They
come from the angular rate
sensor, an integral component
of Dynamic Traction Control
DTC and Dynamic ESA.
As the motorcycle is heeled
over more and more as
it banks into a corner, an
increasingly strict limit is
imposed on the brake-pressure
gradient for the start of brake
application. This slows the
build-up of brake pressure to a
corresponding degree. Addi-
tionally, pressure modulation is
more uniform across the range
of ABS intervention.
Advantages for the rider
The advantages of ABS Pro for
the rider are sensitive response
and high braking and direc-
tional stability combined with
best-case deceleration of the
motorcycle, even when corner-
ing.
ABS Pro is activated in the
,
RAIN
ROAD
and
riding modes.
RACE
In
RACE PRO
ABS Pro can be parametrised
to suit the rider's individual
needs and preferences.
,
DYNAMIC
riding mode,
DYNAMIC TRACTION CON-
TROL (DTC)
How does traction control
work?
Traction control compares the
front and rear wheel circum-
ferential velocities. The differ-
ential is used to compute slip
as a measure of the reserves
of stability available at the rear
wheel. If slip exceeds a certain
limit, the engine management
system intervenes and adapts
engine torque accordingly.
BMW Motorrad DTC is de-
signed as an assistant system
for the rider and for use on
public roads. The extent to
which the rider affects DTC
control can be considerable
(weight shifts when cornering,
items of luggage loose on the
motorcycle), especially when
the style of riding takes rider
and machine close to the limits
imposed by physics.
The system is not optimised for
special requirements that ap-
ply under extreme competitive
conditions off-road or on the
track. The BMW Motorrad DTC
can be deactivated in these
cases.
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