
The Bradenton report that Manatee County, a school in Florida have received their first two hybrid school buses affectionately named Limpio and Wouk. They form part of the Plug-In Hybrid Electric School Bus Project. Soon, 17 other school buses in 11 states will join the Plug-In Hybrid Electric School Bus Project. The projects aim is to test the viability of the new hybrid buses.
Manatee County school buses drive more than a million miles a year, and the fleet last year used more than 6,000 gallons of fuel, said Don Ross, the school district’s supervisor of vehicle maintenance.
“Two years from now, we’ll be standing here telling you how much we saved,” Ross said during a Friday-morning press conference at Braden River High School.
The hybrid buses and two control buses will run the same routes, one in East Manatee and one in the west, said Kathy Braselton, the district’s director of transportation.
They’ll switch every two weeks, and over the next two years, the school district will do detailed comparisons between the hybrid buses and the control buses.
Ross said an Aware Vehicle Intelligence GPS system in each bus will monitor the drivers and the buses: their acceleration and deceleration, braking, fuel economy and the like.
It’ll be interesting to see how often the buses’ diesel tanks will have to be filled, said Chris Broemel, who thinks it will be much less frequently. Broemel, who has been a school bus driver in the district a little over a year, is one of four drivers who will be behind the wheel of the new buses.
He and the others trained in Jacksonville for a few days and learned how to handle the new vehicles.
“They’re a lot of fun to drive,” Broemel said. “When you hit the gas pedal and the hybrid (engine) kicks in, the bus moves.”
A product of school bus manufacturer IC Corporation and Enova Systems Inc., which makes hybrid-electric drivetrains, the buses address concerns over energy dependence and emissions, as the buses run on a diesel engine with hybrid assistance, said Randy Ray, manager of bus product development for IC Corporation.
The hybrid buses’ fuel economy should improve 70 percent to 100 percent and reduce emissions up to 90 percent.
For the most part, the two hybrids parked at Braden River High looked like traditional school buses, but a yellow extension cord plugged into one of them demonstrates how they’ll charge at night. The other was jacked up as though it was popping a wheelie, and a mirror placed under it allowed those in attendance to see the inner workings of the bus.
Each has a V-8 engine and and uses an 80-watt electric drive system. An electric motor behind the transmission kicks in when it’s most efficient, which is when the buses stop and start, Ray said.
At a cost of $225,000 each, the hybrid buses join about 250 conventional buses that run on biodiesel fuel in the district’s fleet.
The nationwide project marks an important milestone for the transportation industry, said Ewan Pritchard, Advanced Energy’s hybrid program manager. Advanced Energy is a nonprofit corporation that initiated the consortium of buyers from school districts, state energy departments and student transportation providers.
Manatee County schools chose to take the first round of buses, Ray said. Before long, they also will be in North Carolina, California, New York, Arkansas, Iowa and other states.
“It’s not often you get to be involved in a project you’re a true believer of,” he said.
The district will keep a close eye on the buses’ results but at this time isn’t committed to adding more hybrid buses to its fleet, Ross said.