Doosan Infracore has expanded development on its hybrid excavator, set to launch in 2012 in North America. The machine is designed to reduce exhaust emissions therefore reducing the environmental impact of carbon dioxide.
The hybrid excavator will be equipped with a diesel engine, electric swing motor, electric converter and an ultra-capacitator to store excess energy during turning and light-duty operations. By storing electricity, the engine can maintain low revolutions and high efficiency combustion during acceleration as reserve energy assists in powering the engine during heavier work.
According to Doosan’s Internal Use Standard considering normal use of construction equipment, the 22-ton model will save about $10,000 in fuel cost per machine each year.