BMW K 1300 GT User Manual

Page 15

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BMW

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Information

10/2008

Page 15

The fi nal drive comes with gears adapted to the higher torque of the engine
as well as optimised bearings.

The loss of effi ciency resulting from two joints in the drive shaft is often
overestimated and in reality amounts to only a few per cent. Studies show that
as of a certain degree of wear and a certain amount of dirt on the surface,
chain drive develops sign fi cantly greater friction reducing the effi ciency of the
drive system accordingly, whereas a drive shaft operates free of wear
and maintains its high level of effi ciency throughout its entire lifecycle.

The K 1300 S meets the greater demands in terms of power, performance
and torque through a new two-stage shaft confi guration which also has
a positive effect on the shift qualities of the gearbox.

The entire rear-wheel drive system is described in detail in the section
on the suspension and the Paralever.

Newly set-up engine management with
cylinder-specifi c knock control.
The K 1300 S comes with the most advanced DME Digital Motor Electronics
currently available on a motorcycle. This electronic management system
referred to as BMS-K (BMW engine management with knock control) is an
in-house development by BMW Motorrad specifi cally for the motorcycle
and was already featured on the K 1200 S. The most signifi cant highlights of
this management concept are fully sequential, cylinder-specifi c fuel injection,
integrated knock control, rapid processing of a wide range of sensor signals
through the most advanced micro-electronics, a compact layout, low weight
and self-diagnosis.

Refl ecting the increase in engine capacity and power, BMS-K has been newly
set up on the K 1300 S. This ensures even more spontaneous behaviour
under part load while the engine responds even more homogeneously and
softer to the accelerator lever at all engine speeds and loads.

Use of the latest D4 CVE for the Central Vehicle Electronics as management
and control software makes the system future-proof in every respect.

Torque-based engine management with Alpha-n-control.
The K 1300 S features the same torque-based engine management concept
taking a wide range of parameters into account as already used on the
K 1200 S. As an example, the engine management system ensures a smooth
and balanced transition of torque and a sensitive response of the engine to
all kinds of running conditions.

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