Komatsu Galeo PC138US-8 Shop Manual page 266

SEN02553-01
Control method in each mode
P mode, E mode, and ATT mode
Matching point:
q
Working mode
Travel
Working
P, ATT
(At arm digging)
Working
(Except arm digging)
E
In P, E, or ATT mode, engine speed is always
q
controlled so that it is kept around the match-
ing point specified for each mode.
When a load to the pump increases and the
q
pressure rises, the engine speed (N) lowers. At
the time, the controller reduces the pump deliv-
ery (Q) to increase the engine speed to the
matching point. If the pressure drops, the con-
troller increases the pump delivery to increase
the engine speed to the matching point.
8
Matching point
68.4 kW/2,200 rpm
{91.7 HP/2,200 rpm}
64.4 kW/2,050 rpm
{86.4 HP/2,050 rpm}
66.3 kW/2,050 rpm
{88.9 HP/2,050 rpm}
60.0 kW/1,980 rpm
{80.5 HP/1,980 rpm}
10 Structure, function and maintenance standard
PC138US, USLC-8