Doosan AD158TI, Руководство по эксплуатации и техническому обслуживанию

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(3) If the engine is running with load, the gain and stability must be adjusted finely. Generally, this should
be done in an unloaded, stable state.
CAUTION
In the event that it continues to appear unstable or demands higher performance in spite of
being adjusted, refer to the section on troubleshooting.
5. Adjusting the starting fuel
Exhaust smoke occurring after the engine is started can be minimized as follows.
(1) Idle the engine and connect terminals "M" and "G."
(2) Use the idle potentiometer on the controller to adjust it to the minimum rpm at which the engine is sta-
ble.
(3) Turn the starting fuel potentiometer counterclockwise until the engine speed drops. Increase the
potentiometer slightly in order to set the idle rpm to a suitable speed.
(4) There are two ways of increasing the engine rpm using the SPEED potentiometer on the speed con-
troller.
Method 1) Accelerating the rated speed immediately after starting the engine (used in generators)
Disconnect terminals "M" and "G" and start the engine, then adjust the speed ramping
potentiometer in order to minimize the exhaust smoke while the engine accelerates from
the idle rpm to the rated rpm.
Method 2) After starting the engine, keeping the engine at the idle rpm for a certain amount of time
until it is accelerated to the rated speed
a) Use the switch to connect terminals "M" and "G." Turn the speed potentiometer counter-
clockwise to adjust the engine rpm. But if excessive exhaust smoke is produced while
accelerating the engine, adjust the starting fuel potentiometer counterclockwise. But if it
takes an excessive amount of time to start the engine, adjust the potentiometer clockwise
gradually.
b) In order to minimize the amount of exhaust smoke while accelerating from the idle rpm to
the rated speed, adjust the speed ramping potentiometer with the switch open.
6. Setting the idle rpm
The idle speed increases when the idle potentiometer on the controller is turned clockwise. When the
engine is set to the idle speed, this controller must be in the "droop" state in order to be able to drive sta-
bly.
7. Droop operation
Droop is used when running the engine generator in parallel, so do not use it when running the engine in
isolation.
The value increases when the selection switch is set to the DROOP position and the droop potentiometer
is turned clockwise.
In other words, the greater the load applied to the engine in this position, the more the speed drops.
The droop range is determined by the amount of change in the current flowing to the actuator when the
engine load changes from no load to full load.
The droop range can be determined by means of internal adjustment of the controller alone and is usually
set to within 10%.
After adjusting the droop range, you can reset the previously set value of the rated speed. After measuring
the engine rpm, reset the speed as necessary.