Advanced control strategy of parallel hybrid low emission electric vehicle

Recently, the hybrid electric vehicle (HEV) system that consists of a mechanical engine, electrical motor and batteries has gained increasing interest because of the inherent drawbacks of the diesel engine (such as black smoke, nitrogen oxide gas, noise, etc.). In an HEV system, without any external and additional recharging of batteries, an efficient driving characteristic can be easily obtained through a battery conditioning algorithm. In this study, a new driving algorithm for parallel type HEVs is presented. Controlling the battery charge operation, according to the engine speed and acceleration signal from the front driving seat, fuel energy efficiency can be greatly improved and effective emission controllability can be obtained.