The Enhancement of Hybrid Transmission System of EV on Low Power Driving

Electric Vehicle (EV) is electric power based of vehicle with concern to environment safety and energy conservation through electric motor.The development of this vehicle is predicted faster.The design of various type of EV also existed.The transmission system is one of the vital part of EV.There are many variety of transmission system available nowadays in the market.That the smoothness of EV motion is influenced by the transmission system.In general, the EV has a direct transmission system to transmit energy from electric motor to the wheels.This condition makes the convenient while driving EV.Nevertheless, the availability of power source also varied.It effects the design of transmission system.The using of low electric power source is inevitable because of low cost.That it has low transmission efficiency such as inconstant torque at low speed.In order to reach the ideal characteristic where it has constant torque at low speed and constant power at high speed.This research aims to find a better driver requirement.This study applies additional component mounted in transmission system.That it can run convenient in condition overload and hiking routes.The use of a continuous variable transmission (CVT) system can support existing direct transmission system.The design and implementation of this additional transmission generates the high efficiency transmission of EV.The experiment shows that EV has constant torque at low speed and constant power at high speed.