Maxwell Technologies supplying ultracapacitors to Caterpillar for energy recuperation, power assist in fuel-efficient hybrid mining shovel
11 September 2013
Maxwell Technologies, Inc. is supplying ultracapacitors to Caterpillar for a high-efficiency energy management system that supports Caterpillar’s fuel-saving hydra-electric technology in the industry’s largest-ever hydraulic mining shovel, the new Cat 6120B H FS.
|6120B H FS. Click to enlarge.|
Introduced at MINExpo 2012, the 6120B H FS is the largest of the Cat hydraulic mining shovel line-up. Caterpillar designed the 6120B H FS to be the most productive and efficient ultra-class hydraulic shovel available. An operating weight of approximately 1,400 tons and engine output of about 4,500 hp (3360 kW) enable the shovel to efficiently handle dipper sizes of 60 to 85 cubic yards (46 to 65 cubic meters), depending on material density.
The hybrid technologies cut fuel use per ton by an estimated 25% through the use of hydra-electric regenerative technologies and a unique energy storage system.
The 1,400-ton shovel’s innovative energy management system incorporates 98 of Maxwell’s 125-volt ultracapacitor modules to store energy created by the shovel during swing deceleration and boom-down movements. That stored energy then helps power the hydraulic system when the machine requires peak power, such as during the digging portion of the cycle.
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