WrightSpeed manufacturers an innovative heavy duty electric truck propulsion system. The key to its range extended vehicle (REV) powertrain is a small multi-fuel turbine range extender engine that company head Ian Wright claims is 30% more efficient than any other turbine on the market. It provides 80 kW of power to keep the onboard batteries charged and eliminate range anxiety. The turbine can run on diesel, CNG, LNG, methane, biodiesel, kerosene, propane, heating oil, or any other combustible fuel, Wright says.
Regenerative braking is an essential part of the WrightSpeed electric truck program, which is specifically designed for heavy duty trash trucks and city buses that spend their entire day starting and stopping hundreds of times. It takes a lot of energy to get a 50,000 lb vehicle moving. Some of that energy can be recaptured when the vehicle slows to a stop again.
AxleTech International also specializes in powertrain components for heavy duty vehicles. It will now build the custom made axle housings for the high power regenerative braking systems that WrightSpeed uses for heavy duty range extended electric vehicles. “All electric vehicles offer some degree of regenerative braking, but WrightSpeed has exceptionally high power braking to virtually eliminate brake wear even in the demanding frequent-stop vehicle drive cycle,” says Arlan Purdy, product manager at Wrightspeed. “To accomplish regenerative braking, force must travel back through the drive axle, back through Wrightspeed’s proprietary gearbox, and into the electric motors.”