Doosan AD158TI, Operation & Maintenance Manual

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Governor Actuator
Definition
The governor detects the engine rpm using a magnetic pick-up sensor to adjust the flow rate of the injection
pump and maintain the desired rpm.
The governor activates the engine’s fuel injection pump when the accelerator pedal is pressed while the vehi-
cle is in operation and adjusts the speed of the vehicle.
The governor detects the engine speed, compares it with the set speed and sends out an output signal to
open or close the fuel injection pump accordingly until the actual speed reaches the set speed.
In terms of operating the vehicle, the driver monitors the speedometer and if there is a desired speed, this cor-
responds to the governor’s speed input, while the governor’s output adjusts the accelerator in order to main-
tain the desired speed.
Appearance and Installation
This is a picture of the governor actuator installed
which electronically controls the injection pump
assembled with the generator engine.
Operating Principles
In this system, when adjusting the engine output,
the controller is adjusted to set and activate the
IDLE and RUN RPM, while the electronic governor
is operated to adjust the injection pump and engine
output.
• The moving core is activated to adjust the rpm.
EDL11180001