Normally, the figure of 6.9 mpg wouldn’t get many people’s hearts racing. But this number, achieved by Altair ProductDesign’s new BUSolutions prototype, is fairly stunning. Doing real-world testing of the bus over downtown, commuter and arterial routes, the bus achieved the 6.9 mpg number. Compare that with 3.3 mpg for a same-class diesel bus going through the identical testing, and the number begins to impress.
hybrid hydraulic drive system
Altair Engineering has selected Parker Hannifin’s series hybrid hydraulic drive system for its BUSolutions project. The system will enable the new advanced bus platform to achieve 45-70% increased fuel economy over average diesel powertrains and more than double the fuel economy improvement of hybrid-electrics.