Doosan’s new DX350LC-7 Stage V 36 tonne crawler excavator is the first Stage V model to feature Doosan’s innovative D-ECOPOWER technology, providing operators with much higher productivity and lower fuel consumption per hour.
Like the new DX300LC-7 30 tonne Stage V model launched earlier in 2019, the DX350LC-7 excavator builds on the very successful design of the previous Stage IV machine. As well as higher performance and cost savings, the new DX350LC-7 Stage V excavator provides major enhancements in operator comfort, uptime and return on investment, with a strong focus on low fuel consumption, increased power, robustness and versatility.
Doosan D-ECOPOWER technology
The D-ECOPOWER technology focuses on the role of the hydraulics system and demonstrates Doosan’s continuous iteration of all the processes and components utilised in the company’s new generation products to achieve unprecedented levels of diesel energy efficiency.
D-ECOPOWER utilises an electronic pressure-controlled pump within a closed centre hydraulic system to accomplish increases of up to 26% in productivity and up to 12% in fuel consumption improvements, depending on the mode selected. A closed centred main control valve minimises pressure loss, while the electric pressure-controlled pump manages and optimises engine power more effectively.
The D-ECOPOWER system uses nine sensors to detect the amount of hydraulic oil necessary to accomplish a specific task and precisely meter the amount of oil required rather than continuously forcing a fixed amount of oil through the system, thereby improving efficiency. Software is utilised to electronically reproduce the full benefits of an open centre hydraulic system with very little energy loss. The hydraulic system and engine horsepower are fully optimised and synchronised, further reducing losses within the system.
New generation Doosan DL08 stage V engine
To meet Stage V engine emission regulations, the new DX350LC-7 excavator is powered by the latest generation Doosan DL08 diesel engine, providing 209 kW of power at 1800 RPM.
The DL08 engine offers a new solution to exceed Stage V regulations without exhaust gas recirculation (EGR), that boosts the quantity of air available during combustion, increasing the temperature of the process and greatly reducing the amount of particulates produced. This is combined with super-efficient DOC/DPF+SCR after-treatment technology to ensure minimal emissions.
Thanks to the new technology, maintenance of the diesel particulate filter (DPF) has been greatly reduced, with no maintenance required until the machine has operated for 8000 hours.
Increased comfort and controllability
Already excelling in spaciousness and ergonomics, the new cab in the DX350LC-7 model takes operator comfort and ease of operation to unheralded levels. As well as a new high quality seat, the enhanced cab offers more features as standard than other machines on the market, ensuring super controllability and high precision in all applications.