Design powertrain for hybrid motorbike

Abstract

In the research, the author has chosen a used scooter Attila for experiment. The author has  researched and assembled an improvement drive train from a DC electric motor with the power of 400 W to cooperate with the gasoline engine torque driving the rear wheels. When the scooter is operating, both gasoline engine and electric motor torque are transmitted to the rear wheel axis. However, the gasoline engine serves as the main source of energy whereas torque from the electric motor plays a supporting role. The electric motor operates using battery power controlled by electronic circuits. The power source consists of two battery 12 V - 26 Ah used to provide power to the electric motor. The battery power is charged from the househood electricity net. The entire drivetrain of the electric motor is designed as a cluster of separated details which can be easily installed in the motorbike. After the modification, the scooter weighs 23kg more than the original one, the experiments show that the scooter operates stably and safely, fuel saving is about 20% compared with the initial scooter powered by gasoline engines.