Doosan Improves the performance of his excavator of orugas of 25 tonnes

When designing the new excavator so that it fulfilled the normative Phase IIIB, Doosan has gone much more there, taking advantage of fully the greater available power to create an optimum balance between cilindrada and power of the engine. The new excavator DX255LC-3 is instrumented with the engine diesel turboalimentado Doosan DL06K of six cylinders and refrigerated by water that surrenders 138 kW (185 CV) of power to 1900 r.P.m. Designed with common-rail of high pressesure, direct injection and electronic control, the engine DL06K fulfils the rule of broadcasts Phase IIIB thanks to the use of the technologies post-treatment of recirculation of the gases of leakage refrigerated (EGR), catalyst of oxidation of diesel (DOC) and filter of particles diesel (DPF).

The model DX255LC-3 of 138 kW has an operative weight of 25,08 tonnes with the feather and balancín standard and the ladle of 1,1 m³. The strength of start of the ladle is of 17,9 tonnes (ISO), whereas the one of the balancín is of 12,8 tonnes (ISO). The maximum scope of excavation is of 9,9 m to level of the floor in the cute configuration block of series and of 10,3 m in the configuration articulated. The maximum depth of excavation is of 6,8 m in the cute configuration block.

The applications for a machine of this size are very diverse, from cleaning the terrain for the initial manufacturing or excavate for cimentación and resolve until realising works of movement of earths and maintenance in roads, civil engineering or general projects of construction.

The new model DX255LC-3 offers a substantial increase in the performance regarding the machine of the previous generation:

• Increase of 8% in the power, with 5% more than pair engine.

• Until 11% of decrease of the consumption of fuel and 13% of increase of the productivity.

• Until 18% of general increase of the relation between productivity and consumption of fuel.

• Between 3% and 7% of increase of the speed of the machine.

• Decrease of 1 dBA in the level of noise in the cabin.

• Until 7% of increase of the strengths of start of the ladle and the balancín.

• Increase of 7% in the capacity of elevation.

The new valves and hydraulics pumps produce a greater hydraulics discharge that, combined with the increase of the pressesure of the system, provides a general increase of the hydraulics performance and the consequent improvement of the functions of power and hydraulics leading, of the capacity of elevation and of the strength of start, beside the shortening of the cycles. The conjunction of the hydraulics systems of new generation and the new controls of high sensitivity are the key for the big productivity of the excavator DX255LC-3.

In the new excavator DX255LC-3, Doosan has centred acutely in the comfort of the operator with more improvements in the cabin that is 6% more espaciosa, with certification ROPS and OPG. Besides, the seat can adjust in height and inclination so that the operator enjoy of an optimum posture.

Between the controls includes of series a new function of selection and installation of implementos, with possibility to register 10 values prefixed. The joysticks have proportional switches of wheel and integrated buttons that allow a precise control of the implementos. It has improved the disposal of the controls, with the most important switches grouped at hand in the right console.

The versatile excavator of orugas middle-sized DX255LC-3 of Doosan is endowed of the electronic system and-EPOS, that optimises the power and the efficiency of the consumption of fuel by means of four ways of power, ralentí automatic and diagnostic of the machine. The new way Power+ offers better performance and greater speeds in the group of work for heavy works. The operators can work with greater efficiency by the availability of four ways of work, an easy monitor to read and precise controls.

The four ways of work (excavation, hammer, cutting cutting shears and the new way of elevation) contribute maximum efficiency and economiza fuel in specific applications. In the way of elevation, the greater pair of strength of the bomb, the low diet of the engine and the automatic increase of power provide extra power to elevate objects like pipes or barriers of concrete.

A new console of control in colour of 7 inches and high quality offers an attractor trucks presentation and an excellent functionality. All the functions can control so much from the signpost of instruments as by means of a new conmutador giratorio of control situated beside the joystick, that is an exclusive element of the excavator Doosan. The controls of discharge and pressesure included of series allow a comfortable and simple regulation in function of the requirements of each implement. The new indicator ECHO of the signpost of control allows to control in real time the consumption of fuel and the percentage of load of the engine to orient to the operator in the selection of the way of operation in that it consumes less fuel.

The cabin is presurizada to prevent the entrance of dust and other particles. By his greater capacity of lighting facilitates the work at night. Beside the rear camera of series, offers the option of a lateral camera like element of hygiene. A greater zone glazed in the cabin allows an excellent peripheral visibility. Other characteristic are the climatizador totally automatic, a port USB to reproduce music and videos and more compartments of storage for papers or other objects.

The frame, the feather and the balancín have reinforced to endow them of greater robustness. The result is that the useful life of the excavator DX255LC-3 has lengthened to a large extent, what consolidates the reputation of reliability and durability of Doosan.

The new excavator DX255LC-3 has a capó of easy opening of an alone piece. The filter DPF finds in an enclosed compartment with key. The filters, the valves and the batteries are situated in an easily accessible place.

A new embrague of electronic fan reduces even more the consumption of fuel and the level of noise, to the time that improves the efficiency of the system of refrigeration of the excavator DX255LC-3, as the capacity of refrigeration has increased between 10% and 15% regarding the machine of the previous generation.

In addition to incorporating more characteristic of series that other excavators of this existent class in the market, the new DX255LC-3 offers a variety of options a lot greater.

Between them is the new floating feather intelligent, that allows that the feather ‘float' up and down. Like this, the operator can concentrate more in the task whereas it diminishes the load of work of the machine and increases the efficiency. The way of flotation allows that the feather move freely up and down without hydraulics discharge; in the way of hammer, by against, the feather moves freely downwards, also without hydraulics discharge. A button of temporary cancellation offers the possibility of desactivar momentáneamente the ways of flotation, allowing the use of the hydraulics discharge to activate the feather.

Other options are a gun and compressesor of air, ideal in places with a lot of dust so that the operators clean the cabin and the compartments, and an innovative microphone/speaker for greater hygiene in the works.

A new option of trip in a straight line facilitates the movement and the transport of the new excavator DX255LC-3. This characteristic is ideal for the advances and shrinkings in a straight line that they do with frequency when digging resolve, as an alone pedal in the leading corner right of the floor of the cabin acts on both orugas. The option of double bomb for applications very demanding increases the discharge of the implementos of high discharge.