Performance Evaluation of Short Range Frequent Charging Electric Bus (Third Report)

- Reduction of CO2 emissions in the Long-term Field Test and Possibility of Further Reduction of Energy Consumption -

Abstract

Electric buses have superior environmental performance, emiting no CO2 while driving. However, it is essential to improve battery performance towards more popularization of them. To resolve this issue, a concept “ short range frequent charging ” was formulated. Under this approach, we developed WEBs, Waseda Electric Buses, and performed a long-term operation test in Nagano. Based on results, we evaluated reduction of CO2 emissions and energy costs by introducing them. And we analyzed how vehicle weight reduction and change of overall gear ratio / regeneration torque limit affected running energy. Finally, we considered possibility of further reduction of running energy.