Dynamic Engine Brake Control - BMW S 1000 XR 2022 Rider's Manual

WARNING
Risky riding
Risk of accident despite DTC
Invariably, the rider bears
responsibility for assessing
road and traffic conditions
and adopting 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 acceler-
ate is restricted more and more
as the angle of heel increases.
Consequently, there can be a
perceptible reduction in accel-
eration out of very tight bends.
With DTC, 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 lean angle values are
identified as implausible over
an extended period of time,
a substitute value is used for
the lean angle or the DTC is
switched off. Under these cir-
cumstances the indicator for
a DTC fault shows. Self-dia-
gnosis has to complete before
fault messages can be issued.
The BMW Motorrad Traction
Control can shut down auto-
matically under the exceptional
riding conditions outlined be-
low.
Exceptional riding conditions:
Riding for a lengthy period
with the front wheel lifted off
the ground (wheelie).
Rear wheel rotating with the
vehicle held stationary by ap-
plying the front brake (burn-
out).
Heating up with the motor-
cycle on an auxiliary stand,
in neutral or with a gear en-
gaged.
DYNAMIC ENGINE BRAKE
CONTROL
How does dynamic engine
brake control work?
The purpose of dynamic en-
gine brake control is to prevent
the unstable riding states that
can be produced by excess-
ive engine braking moment
acting on the rear wheel. De-
pending on the road condition
and riding dynamic, excessive
braking torque can produce
a sharp rise in rear-wheel slip
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