BMW Motorrad R 1250RT, Rider'S Manual

Page: 195 / 379

189
ECO mode
ShiftCam technology is the
bridge-builder between ultra-
high dynamism and maximum
efficiency. The full-load cams
allow full valve lift for maximum
combustion-chamber charge
and high power, whereas the
part-load cams considerably
shorten the lift of the intake
valves and open the valves to
different extents. Charge-cycle
losses are lessened by de-throt-
tling, friction is reduced, the
mixture is swirled more vig-
orously and combusted more
effectively, fuel consumption
goes down.
The ECO mode assists the
rider with ECO indicator and
engine characteristic (paramet-
risation of the electromotive
throttle controller) to keep the
engine in the operating range
of the consumption-oriented
part-load cam, so as to maxim-
ise the distance travelled with a
given quantity of fuel.
The length of the green bar
in the ECO indicator in the
TFT display visualises whether
the drive is operating in the
consumption-optimised range
of the part-load cam and the
margin from the switch-over
threshold to full-load cam op-
eration. The length of the bar
represents the load reserve left
before the switch-over point
for full-load cam operation is
reached. The colour changes
to grey when load require-
ment increases and the engine
switches to the full-load cam.
The reading shown by the ECO
indicator varies depending on
the gear selected by the rider,
the load requirement input via
the throttle grip, and engine
rpm. Even outside the operat-
ing range of the part-load cam,
when the bar is grey, the ECO
offers benefits for an econom-
ical style of riding by reducing
maximum available torque and
peak power.
Because of the reduced
acceleration ability in ECO
mode, changing to a different
riding mode is recommended
prior to critical overtaking man-
oeuvres with the motorcycle
heavily loaded or when riding
two-up.
Rider can further reduce con-
sumption by riding with fuel
economy in mind ( 195).