Operating Instructions

186 TECHNOLOGY IN DETAIL
Releasing the brake when
switching off the engine or
during timeout
Hill Start Control is deactivated
when the engine is switched
off using the emergency-off
switch, when the side stand is
folded out, or after it times out
(10 minutes).
In addition to the indicator and
warning lights, the following
behavior is to alert the rider to
the deactivation of the Hill Start
Control:
Brake warning jerk
The brake is released briefly
and is immediately reacti-
vated.
This causes a jerking behavior
that the rider can feel.
The fully integral ABS brake
system sets a speed of
approx. 0.6-1.2 mph (1-
2 km/h).
The rider must brake the vehi-
cle manually.
After two minutes, or when
the brake is applied, the
cruise control is deactivated
completely.
When the ignition
is switched off, the
holding pressure is built up
immediately and without brake
warning jerk.
SHIFTCAM
Principle of ShiftCam function
The motorcycle is equipped
with the BMW ShiftCam tech-
nology—a technique for vary-
ing the valve timing and the
valve stroke on the intake side.
The centerpiece of this technol-
ogy is a one-piece intake trip
camshaft that has two cams
per valve to be actuated: one
for partial load and one for full
load. The partial load cam has
been developed with regard
to fuel economy optimization
and smooth running. The par-
tial load cam reduces both the
valve timings adapted for this
purpose and the intake valve
stroke. Furthermore, the intake
cams for the left and right in-
take valve differ in stroke and
angle position when the par-
tial load cam is activated. This
causes a staggered opening of
the two intake valves at differ-
ent widths. The advantage is
that the fuel-air mixture flow-
ing into the combustion cham-
ber is more strongly swirled
and more effectively burned.
Overall, this results in optimal
fuel efficiency and noticeably
improves the smoothness of
running. The full load cam is
optimized for performance and