The Port of Long Beach awarded a contract for three prototypes of new hybrid terminal tractors to the Kalmar division of Finnish crane-manufacturer Cargotec.
The port will test the design of the environmentally friendly prototypes in trials that will begin in a year and last for 12 months.
The three hybrid terminal tractors will be based on Kalmar’s established Ottawa 4 X 2 terminal tractor, which is already in use at terminals across the world.
They will be fitted with a parallel hybrid drive system that converts power from on-board batteries, having been charged by the OEM diesel engine or regenerative braking system, to an electric motor for propulsion through the rear axle. This technology is being developed by Kalmar’s development partner in Hybrid technology, US Hybrid in Torrance Ca.
“The trials should not only prove the hybrid concept with new terminal tractors, but also that used terminal tractors can be modified to hybrid power,” said Jay Hayes, vice president of research and development for Kalmar terminal tractors at Cargotec. “We estimate that adding a hybrid kit may result in fuel savings of up to 30 percent.”