SANY LATIN AMERICA
4-164
SY195/205/215/225C9 Crawler Hydraulic Excavator
Structure and Function
Shop Manual - June 2013
Function
●
Turning of the fuel control dial changes the
resistance of the sliding rheostat inside the
dial and the voltage signal collected by the
controller. The controller calculates the col-
lected signals and drives the throttle motor
via signal output and controls the volume
of the injection pump so that the engine
can run at an optimal speed.
●
When throttle voltage is beyond the area,
the controller sends out alarm code and
the engine runs at low idle. The area under
the sloping line is the abnormality detection
area.
Remark:
The left limit is 0%; and the right limit is 100%.
ZX215-1002181
(
%
)
(
V
)
100
0
0.25 1.72
4.49 4.75 5
Voltage
˄
V
˅
Dial angle
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