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and engine smoothness. As
well as adapting valve timing,
the partial-load cam also
reduces intake-valve lift. With
the partial-load cams activated,
moreover, the lobes for the
cylinder's left and right intake
valves produce staggered
valve lift and offset angles of
rotation. Consequently the
two intake valves open at very
slightly different times and the
distance to which they open
also differs. The advantage:
The fuel/air mixture flowing
into the combustion chamber is
swirled more thoroughly and
combusted effectively - so all
in all the fuel is utilised more
efficiently and engine operation
is perceptibly smoother. The
full-load cam is designed for
optimised engine power and
it maximises intake valve lift.
The intake camshaft is shifted
axially to vary valve timing
and valve lift. The pins of an
electromechanical actuator
engage a shift gate on the
intake camshaft. This permits
load-dependent and speed-
dependent actuation of the
intake valves and, consequently,
a no-compromises combination
of performance and low fuel
consumption.
Summary of Contents for R 1250 R
Page 1: ...RIDER S MANUAL R 1250 R BMW MOTORRAD MAKE LIFE A RIDE ...
Page 8: ...GENERAL INSTRUCTIONS 01 ...
Page 21: ...15 ...
Page 22: ...GENERAL VIEWS 02 ...
Page 31: ...25 ...
Page 32: ...STATUS INDICATORS 03 ...
Page 65: ...59 ...
Page 66: ...OPERATION 04 ...
Page 100: ...TFT DISPLAY 05 ...
Page 124: ...ADJUSTMENT 06 ...
Page 135: ...129 ...
Page 136: ...RIDING 07 ...
Page 156: ...150 RIDING Tension all the straps uni formly to hold the vehicle se curely ...
Page 157: ...151 ...
Page 158: ...ENGINEERING DETAILS 08 ...
Page 176: ...MAINTENANCE 09 ...
Page 214: ...ACCESSORIES 10 ...
Page 215: ...GENERAL NOTES 210 POWER SOCKETS 210 CASES 211 TOPCASE 214 NAVIGATION SYSTEM 217 ...
Page 228: ...CARE 11 ...
Page 235: ...229 ...
Page 236: ...TECHNICAL DATA 12 ...
Page 251: ...245 ...
Page 252: ...SERVICE 13 ...
Page 272: ...266 SERVICE Work performed odometer reading Date ...
Page 273: ...267 ...
Page 279: ...273 ternet address bmw motorrad com certifica tion ...
Page 291: ...285 ...