Pasadena-based Calstart is talking up receipt of hydraulic hybrid evaluation vehicles by members of its Hybrid, Electric and Advanced Truck Users Forum’s parcel delivery working group.
HTUF members FedEx Ground, Purolator Courier, and UPS each purchased an evaluation vehicle with assistance from Calstart through a grant from the U.S. Department of Energy.
The Freightliner Custom Chassis Corp vehicles with Morgan Olson bodies have hydraulic hybrid drivelines from Parker Hannifin, integrated and assembled by FCCC.
They represent a medium duty version of Parker’s RunWise drive for refuse trucks.
Braking energy is recovered and stored in hydraulic accumulators, Calstart says, and is used to power the truck during acceleration. “Parker’s onboard controller incorporates an advanced engine-off strategy to minimize unnecessary run time,” states a release. “Fuel use can be reduced by 40% or better fuel economy based on route profile.”
“We look forward to the improvements to fuel economy and drivability that this new technology brings to the industry and are willing to work with the OEMs to validate these improvements for other fleets,” Purolator fleet chief Serge Viola says in the Calstart release.
“We are anxiously awaiting to see real world test results,” said Shane Terblanche, Parker hybrid drive systems GM.
According to Calstart, the Parker hybrid drive system installed in these trucks is designed specifically for medium duty, start-stop applications such as parcel delivery. It includes an infinitely variable transmission. Power from Parker’s hydraulic pump/motors and accumulators is blended with engine power depending on driver demand.
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