Komatsu PC88MR-10 Shop Manual page 254

10 Structure and function
Electrical control system
Control method in each mode
P, E, ATT/P, ATT/E,B and L modes
Matching point
Working mode
P and ATT/P
During travel
During work
E, ATT/E
L
In mode P, E, ATT/P, or ATT/E, the engine speed is kept around the matching point set in each mode.
When the pump load increases and the pressure increases accordingly, engine speed (N) decreases. At
this time, the controller decreases pump discharged volume (Q) to increase the engine speed near the
matching point. When the load decreases and the pressure decreases accordingly, the controller
increases the pump discharged volume until the engine speed reaches near the matching point.
10-176
Matching point
48.8 kW / 1,950 rpm {66.4 HP / 1,950 rpm}
44 kW / 1,850 rpm {59.8 HP / 1,850 rpm}
34.2 kW / 1,640 rpm {46.5 HP / 1,640 rpm}
24.3 kW / 1,510 rpm {33.1 HP / 1,510 rpm}
PC88MR-10