Doosan Infracore has expanded its development on its hybrid excavator with enhanced energy efficiency and lower exhaust emissions.
The Doosan hybrid excavator, slated for launch by 2012 in North America, will provide significantly reduced fuel consumption and is designed to reduce the environmental impact of CO2. The hybrid excavator will be equipped with a diesel engine, electric swing motor, electric converter and an ultra-capacitor that will store excess energy during turning and light-duty operations. The reserve electricity will then be used to assist the power of the engine during heavier work; allowing the engine to maintain low revolutions and high efficiency combustion during acceleration.
The first hybrid excavator will be a 22-ton model with an approximate 35 percent reduction in CO2 and fuel consumption when compared with the DX225 standard hydraulic excavator. The increase of fuel efficiency will save approximately $10,000 in fuel cost per machine each year. 770.831.2200, www.doosan.com