Study of the electronic control strategy for the power train of hybrid electric vehicle

In this paper, the configuration of a parallel hybrid vehicle is introduced. Several operation modes of the engine and electric motor and different control strategies are analyzed. The results show that, with proper control strategies and selection of the drive-train parameters, the vehicle can satisfy the urban and highway driving with a small internal combustion engine, a small battery pack and a single gear transmission. Moreover, the vehicle does not need to charge the battery from the electricity network for keeping its battery SOC at a reasonable level.