Komatsu Galeo BR380JG-1E0 Shop Manual page 213

10 Structure, function and maintenance standard
Function
The work equipment and pump controller con-
q
trols the pump so that it can absorb all the
torque at the output points of the engine
depending on the pump absorption torque
specified beforehand, rotation set by the fuel
control dial, and actual engine speed.
BR380JG-1E0
Matching point:
q
107.0 kW/1,800 rpm {143.5 HP/1,800 rpm}
Engine speed is always controlled so that it is
q
kept around the matching point specified
beforehand.
If the pump load increases and the pressure
q
rises, engine speed (N) lowers. If it happens,
the engine speed is increased to around the
matching point, allowing the pump controller to
decrease pump delivery (Q). On the contrary,
the pump load decreases and the pressure
lowers, the pump controller continues to
increase pump delivery until the engine speed
reaches around the matching point.
SEN01355-00
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