The conventional vehicle with internal combustion engine has economical and environmental problems. To overcome these problems, the EV (Electric Vehicle) and the FCV (Fuel Cell Vehicle) are proposed but they have some limitations to commercialize. The...
The conventional vehicle with internal combustion engine has economical and environmental problems. To overcome these problems, the EV (Electric Vehicle) and the FCV (Fuel Cell Vehicle) are proposed but they have some limitations to commercialize. The HEV (Hybrid Electric Vehicle) system driven by more than two power sources is then developed as a new substitute. In this study, the performance of the power-split HEV is investigated through the analysis of the power flow. To do this, the components of the powertrain and vehicle driving conditions are modeled and served as modules in the simulation software. The full model of the target vehicle is modeled and the equations of motion are derived from the full vehicle model by the bond graph method. The driving control modules are developed to optimize the target vehicle while maintaining the performance of the IC engines and minimizing the fuel consumption. Simulation using Matlab/Simulink is carried out by LA4 city driving mode and US06 highway driving mode. The simulation results show that the fuel economy under LA4 city driving mode can be improved with 81.6% compared to a conventional vehicle. The fuel economy under US06 highway driving mode can be improved with 59.3% compared to a conventional vehicle.