Doosan’s DX225LC and DX255LC excavators deliver power and fuel efficiency

From clearing land for initial site development, to excavating for utilities, to stabilizing foundations for pavement installations, the ability to tailor an excavator’s power to its projects can increase productivity and reduce fuel consumption for contractors. Upgrades in power and performance to the Doosan DX225LC-3 and the DX255LC-3 excavators, combined with interim Tier 4 (iT4) emission compliance updates, are designed to help customers work more efficiently.

Improvements to the machines include new selectable power modes and work modes that provide operators with the convenience of being able to customize their machine’s power delivery for specific tasks, in addition to adjusting the hydraulic flow to match attachment functions. A new electronic fan clutch reduces fuel consumption and noise levels, while providing cooling system efficiency improvements on the machines.

The DX225LC-3 and DX255LC-3 are each powered by a 6-cylinder Doosan DL06K water-cooled diesel engine that has been designed for use with a cooled exhaust gas recirculation (CEGR) system, diesel oxidation catalyst (DOC) and diesel particulate filter (DPF). The engines in this configuration are optimized to reduce nitrogen oxides and articulate matter to comply with iT4 emission regulations. The turbocharged 167 horsepower engine on the DX225LC-3 and the 185 horsepower engine on the DX255LC-3 feature a high-pressure common-rail design with direct fuel injection and electronic control.

The versatile, mid-sized Doosan DX225LC-3 and DX255LC-3 crawler excavators feature an electronic power optimizing system (EPOS), which provides optimum power and fuel efficiency via four power modes, auto-idle and machine diagnostics. Operators can work more effectively with multiple work modes, easy-to-read display monitors and precise control levers. The new Power + mode provides improved performance and faster workgroup speeds for heavy duty work.

The DX225LC-3 and DX255LC-3 feature a new Intelligent Floating Boom option that allows the boom of the excavator to “float” up or down. With this feature, the operator can focus more on the task while decreasing the machine workload and increasing efficiency. The float mode lets the boom move freely up and down without hydraulic flow, while the breaker mode allows the boom to freely move down, only without hydraulic flow. A temporary reset button provides the ability to momentarily disengage the float modes, permitting hydraulic flow to activate the boom. Also offered is an air compressor, which is ideal for operators in remote and dusty locations to clean the cab.

A new straight travel option streamlines the travel and transport of the machines. This feature is ideal for the straight forward-and-backward travel common in trenching applications, as it provides a single foot pedal in the right front corner of the cab floor that operates both tracks.

Source: Doosan Infracore Construction Equipment America


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