NEW EQUIPMENT NEWS
Doosan’s new engine and pump matching technology
The engine power of these excavators is a maximum of 109kW at 1 800rpm, with a maximum torque of 66kgf.m at 1 400rpm.
The DX220LCA-2 is Doosan’s new
entry into the 20–22-ton excavator
class, developed with advanced
design features for greater
productivity in daily operation —
even in the harshest conditions on
African soil.
Doosan’s advanced
technologies have been
introduced in the latest
excavator series, to ensure
optimum fuel efficiency (up
to 12% improvement in fuel
consumption), precision control,
and greater operator comfort.
Other attributes include the
optimised lever control and auto
idle facility, which allow the
operator to take a break and leave
the control joystick fixed, keeping
both the engine and pump
in standby mode, preventing
14
JANUARY 2019
fuel wastage. Enhancements
to the main pump — which
include optimised cylinders and
higher system pressures — also
contribute to the overall improved
fuel economy.
The newly designed frames,
undercarriage, swing bearing,
sprocket roller, and reinforced
heavy-duty boom and arm offer
greater durability. To protect the
base of the arm, reinforced bars
have been added and the arm
centre and end-boss have been
strengthened.
A new general purpose
(GP) bucket is installed onto
the machine as a base spec,
with open-type side cutters for
improved loading operations. The
H-class bucket has a maximum
capacity of 1.40m³.
The impressive use of space
in the cabin includes a newly
designed monitor that clearly
displays all relevant information
for different operation
scenarios and with the new
joystick buttons, the operator
can easily select specific
features. For example, the
breaker button, the eco-zone
mode button for the most
fuel-efficient sector, and the
power mode button for more
demanding tasks.
A walk around the machine
shows easy access to all
components, including the
engine oil filter, radiators, and
grease inlets, which enables
quick maintenance procedures
and prevents contamination to
the surrounding environment.
A rotor type of pre-cleaner
in DX220LCA-2 excavators
filters out particles larger
than 20 microns, with over
99% accuracy. In addition,
Doosan has designed a high-
capacity water separator to
improve engine durability, and
a large reserve tank, with UV
protection, has reduced
failure risks.
A larger cooling module
ensures extended service
life of every machine and a
new vertical fuel level sensor
provides highly accurate
information about the fuel
level. The new separate design
of injection and discharge of
the grease valve for the idler
cylinder reduces the risk of
failure in valves.
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