Atlanta, GA - Doosan Infracore is expanding 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, is touting reduced fuel consumption and an overall design that will reduce the environmental impact of CO2. The Doosan 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. Doosan Infracore's first hybrid excavator is slated to be a 22-ton model with an approximate 35% 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 according to the company.