Parameter Design and Implementation of Propulsion System of a Plug-In Hybrid Electric Transit Bus

Parameters of the series plug-in hybrid propulsion system on the transit bus are matched with the predetermined drive cycle, which include TBP (traction battery package) capacity, driver power, gear ratio and APU (auxiliary power unit) power. And hybrid factor is determined by vehicle fuel economy. Using ADVISOR, four urban drive cycles are applied to evaluate fuel economy of diesel, electric, and plug-in hybrid electric bus. The plug-in hybrid electric bus has a good fuel economy between the electric and diesel bus. Finally, A plug-in hybrid electric bus prototype is refitted from a pure electric bus and a constant speed road test is done.