Efficiency Comparison between Series Hybrid Bike and Traditional Bike

Series Hybrid Bike (SHB) offers a complete decoupling between the bike motion and the power given to the system by the cyclist thanks to an Energy Storage System (ESS). The main advantage for the cyclist is to pedal with a minimum of torque and power variations to optimize its own physiological energy. On the other hand, one major drawback of the SHB is the systems' efficiency. This paper focuses on determining the minimum overall efficiency the system shall have in order to compete with Conventional Chain Bike (CCB) on a regular city ride.