BMW Motorrad R 18, Руководство пользователя для мотоциклиста

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First, the desired riding mode is preselected.
The switchover does not take place until the
affected systems are in the required state.
The selection menu does not disappear in
the display until the riding mode has been
switched over.
DYNAMIC ENGINE BRAKE CONTROL
How does dynamic engine brake control
work?
The purpose of the dynamic engine brake
control is to safely prevent unstable riding
conditions that are related to excess drag
torque at the rear wheel. Depending on the
road condition and driving dynamics, excess
drag torque can make the slip at the rear
wheel increase severely and impede driving
stability. The dynamic engine brake control
limits slip at the rear wheel to a safe, set-
point slip that is dependent on the mode.
Causes of excess slip at the rear wheel:
Riding in coasting overrun on a road with
low coefficient of friction (e.g. wet leaves).
Hopping when shifting gears down.
Hard brake onset in sporty riding style.
Like the BMW Motorrad ASC, the dynamic
engine brake control compares the wheel
circumferential velocities of the front and
rear wheel. The dynamic engine brake con-
trol can determine the slip, and therefore the
stability reserve, on the rear wheel using the
speed difference.
If the slip exceeds the respective limit value,
the engine torque is increased by slightly
opening the throttle valves. The slip is re-
duced, and the vehicle is stabilized.
Effect of the dynamic engine brake control
In the RAIN and ROLL riding modes: Maxi-
mum stability
In the ROCK riding mode: Reduced inter-
vention when compared to the RAIN and
ROLL riding modes
DYNAMIC BRAKE CONTROL
Dynamic Brake Control function
The Dynamic Brake Control function helps
the rider in the event of emergency braking.
Detection of emergency braking
Emergency braking is detected when the
front wheel brake is applied quickly and
with force.
Behavior during emergency braking
If emergency braking is applied at a
speed of more than 6.2 mph (10 km/h),
in addition to the ABS function, the
Dynamic Brake Control function will also
be activated.
In the event of partial braking with
high brake pressure gradients,
Dynamic Brake Control will increase
the integral brake pressure on the rear
wheel. This shortens the braking distance,
enabling controlled braking.
Behavior in the event of accidental
activation of the throttle grip
If the throttle grip is accidentally actuated
during emergency braking (throttle posi-
tion > 5%), the intended braking effect
is ensured by the Dynamic Brake Con-
trol ignoring the opening-up of the throttle
grip. This ensures the action of emergency
braking.
If the gas is shut off (throttle position
<5%) during the intervention of the
Dynamic Brake Control, the engine torque
required by the ABS brake system will be
restored.
If the emergency braking is stopped and
the throttle grip is still under actuation, the
Dynamic Brake Control reduces the engine
torque as required by the rider in a con-
trolled manner.