The research on the gear shift schedules for AMT in HEV

This paper describes the gear-shift schedules for the Automated Mechanical Transmission(AMT) utilized in the parallel hybrid vehicle, which is equipped with an Integrated Starter Generator (ISG). The effects of the battery's state of charge (SOC) and ISG's performance on the gear shift schedules have been investigated. Both the power gear-shift, schedule in which the ISG provides the peak torque all the time as the auxiliary power source and the economical gear-shift schedule in which the energy consumption by the ISG is equivalent to the fuel consumption, are simulated in the Matlab/Simulink. Road test's results proved the effectiveness of gear-shift schedules.