DOOSAN has revealed that a number of new features have been made available on the firm’s large crawler excavators, covering five models: the DX350LC-7, DX380LC-7, DX420LC-7, DX490LC-7 and DX530LC-7.
The main changes concern the cab. As well as a new ‘high quality’ seat, Doosan revealed standard features include a keyless start & remote door lock/unlock; parallel wiper system covering a larger window area; operator ID/password functionality; remote diagnostics functionality; new heating & cooling seat (cooling is optional); DAB audio + hands-free call system; 11 LED work lights as standard with two more optional; and AVM (Around View Monitor) with 360° cameras (Ultrasonic sensors are optional).
The newly designed seat includes a seat belt alarm as standard and a ventilation function as an option. The same design is applied to standard and optional seats, but seats with the optional ventilation system have three-stage heating controls while the standard seat has two-stage heating controls like before.
The eight-inch Doosan smart touchscreen allows operators to scroll through the different menus available, providing a choice of work and power modes to suit the application being undertaken.
With the addition of the DX420LC-7, all latest versions of these Doosan large excavators now incorporate the manufacturer’s D-ECOPOWER technology, which focuses on the role of the hydraulics system. Doosan explained the technology utilises an electronic pressure-controlled pump within a closed centre hydraulic system to achieve increases of up to 26% in productivity and up to 12% in fuel consumption improvements, depending on the mode selected.
The D-ECOPOWER system uses nine sensors to detect the amount of hydraulic oil necessary to accomplish a specific task and meter the amount of oil required rather than continuously forcing a fixed amount through the system.