Dynamic Engine Brake Control (Msr); Dynamic Esa - BMW Motorrad R 1250 R Rider's Manual

160 ENGINEERING DETAILS
DYNAMIC ENGINE BRAKE
CONTROL (MSR)
with riding modes Pro
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
and impair directional stability.
Dynamic engine brake control
limits this slip at the rear wheel
to a safe mode-dependent and
bank-angle-dependent regu-
lated slip.
Causes for excessive slip at
the rear wheel:
Riding with engine overrun
on a surface with a low coef-
ficient of friction (e.g. wet
leaves).
Rear-wheel hop when rider
downshifts.
Sharp braking during sporty
riding.
In the same way as DTC trac-
tion control, dynamic engine
brake control compares the
wheel circumferential velocities
of the front and rear wheels.
Additional information on the
bank angle enables dynamic
OE
engine brake control to calcu-
late slip and the reserve of sta-
bility at the rear wheel.
If slip overshoots the applic-
able limit, the throttle valves are
opened very slightly to increase
engine torque. Slip is reduced
and the vehicle is stabilised.
Effect of dynamic engine
brake control
In RAIN and ROAD riding
modes: Maximum stability.
In DYNAMIC and
DYNAMIC PRO riding
modes: High stability.
In ENDURO riding mode: Min-
imum stability.
in ENDURO PRO riding mode,
dynamic engine brake control
is inactive.

DYNAMIC ESA

with Dynamic ESA
Riding position equaliser
The electronic chassis
and suspension setting
Dynamic ESA is able to adjust
your motorcycle automatically
to the load. If the spring
setting is set to
does not have to change the
load setting.
OE
, the rider
Auto