SANY LATIN AMERICA
4-172
SY195/205/215/225C9 Crawler Hydraulic Excavator
Structure and Function
Shop Manual - June 2013
ZX215-1002190
Engine torque
T
Engine speed N
ZX215-1002191
Engine power
KW
Engine speed N
ZX215-1002192
Pump output pressure
P
Pump delivery
Q
Control method of each working mode
H mode
●
The matching point of H mode: rated
speed 114kW/2050rpm
●
If pump load increases and pump pressure
rises, engine speed drops. In this case,
engine speed will rise to near the match-
ing point, allowing the pump controller to
reduce pump discharge. On the contrary, if
pump load decreases and pump pressure
drops, pump controller will continue to in-
crease pump discharge until engine speed
reaches the matching point.
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