Description
Aã€Introduction of Performance Characteristics
The spacious operation range of the extra long boom excavator
embodies far-reaching construction purpose and it is mainly used
for dredging of river channels and lakes, demolition of buildings
and earth excavation.
（a）Supreme Power, High Reliability and Low Fuel Consumption
Original packaging Comings engine which is equipped with electric
throttle device can adjust fuel consumption according to the engine
power, realize automatic idle speed and acceleration and decrease
fuel consumption. The environmental protection performance is
improved and accords with environmental emission standard of
European II.
Large capacity fuel prefilter and oil-water separator improves fuel
quality, decreases the early wearing of fuel injection nozzle and
extends the service life of engine cylinder.
The air filter uses macro-scale structure and is equipped with air
prefilter to realize three-stage filtering which ensures clean air
admission and decreases the early wearing of cylinder components.
It particularly satisfies for harsh working environment of heavy
dust and wind.
The muffler uses large capacity airflow section technology, which
significantly improves the effect of muting and reduces noise
effectively.
（b）Advanced and reliable hydraulic control system
New complete electric control selective system
According to different working loads, design different power
selection methods, perform optimum performance in the precondition
of reducing fuel consumption and make the engine and the main pump
power reach the best state.
Control system of main pump capacity
The main pump capacity can adjust automatically and realize
capacity proportional control of the executing system and reduce
power loss of the main pump capacity.
Mode selection system
Power mode
H mode: heavy operation excavation, rock or other rigid operation
objects.
S mode: common operation excavation
L mode: fine, leveling or cleaning operation
boom and bucket pole maintaining system
Install boom and bucket pole maintaining valve to prevent them from
settling, to lengthen the time when it is in the middle and thus
improve its safety and reliability.
Adjustment of the Rotational speed of Engine
The rotational speed of engine can be adjusted to achieve the
highest working efficiency
Natural Overheating Protection of Engine
If the temperature of engine coolant is higher than specified, the
pump output and the rotational speed of engine will be reduced
automatically to avoid damage of the machine.
Automatic Idle Speed System
Automatic deceleration device: When the control stick is in the
middle, the automatic deceleration device can adjust the rotational
speed of engine to the optimum value; while operating the control
stick, the rotational speed of engine can resume to the original
speed automatically.
Electronic Fault Diagnosis Monitoring System
