Doosan DX60R Shop Manual page 215

Component/Feature
Droop control Standard with VM series
Isochronous Standard with CL series
control Optional with VM series
Low-idling speed up
High-idling Optional
speed down
Auto Optional
deceleration
Engine
Reduces the engine speed by a certain percentage from no load
to full (rated) load in steady state operation. The same
percentage droop is maintained even when the load increases at
any no-load speed.
Offers a constant engine speed from no load to full load. The
engine speed does not decrease even when the load increases
at any no-load speed.
Increases the low-idling speed to up to 1,000 rpm depending on
the engine coolant temperature. When the coolant temperature
reaches a predetermined value, this feature returns the engine
speed to the normal low idle setting, thus reducing the warm-up
time.
Decreases the high-idling speed depending on the engine
coolant temperature. When the coolant temperature falls to a
predetermined value, this feature returns the engine speed to the
normal high idle setting, thus minimizing the emission of white
smoke at low temperatures.
Brings the running engine in low idle mode automatically when
the accelerator pedal is not operated for a predetermined period
of time. When the pedal is operated, i.e., the accelerator sensor
is activated, the low idle mode is cancelled.
Description
SP001693
Page 35