BMW Motorrad R 1200R 2014, Rider'S Manual

Page: 113 / 231

How does the DTC work?
The DTC system compares the
speed of rotation of the front
wheel and the rear wheel. The
differential 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 control inter-
venes and adapts the engine
torque accordingly.
The DTC has a bank-angle
sensor, so it can control wheel
slip all the more sensitively when
the motorcycle is heeled over for
cornering. Consequently, more
dynamic riding conditions can be
achieved without any lessening
of directional stability. In the
DYNAMIC mode slight DTC-
assisted wheelies are possible.
What is the design
baseline for the DTC?
DTC is designed as an assist-
ance system for the rider and
for use on public roads. The ex-
tent to which the rider affects
DTC control can be consider-
able (weight shifts when corner-
ing, items of luggage loose on
the motorcycle), especially when
style of riding takes rider and ma-
chine close to the limits imposed
by physics.
The system is not optimised for
special requirements that apply
under extreme competitive situ-
ations on the track. You have the
option of deactivating the DTC
for these circumstances.
WARNING
Risky riding
Risk of accident despite DTC
Invariably, the rider bears re-
sponsibility for assessing road
and traffic conditions and ad-
opting his or her style of riding
accordingly.
Do not take risks that would
negate the additional safety
offered by this system.
Special situations
In accordance with the laws of
physics, the ability to accelerate
is restricted more and more as
the angle of heel increases. Con-
sequently, there can be a per-
ceptible reduction in acceleration
out of very tight bends.
The speeds of the front and rear
wheels are compared and the
angle of heel taken into account
as one means of detecting the
rear wheel's incipient tendency to
spin or slip sideways. If the elec-
tronic processor receives values
that it considers implausible over
a lengthy period, a dummy value
is used for the angle of heel or
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z Engineering details