FOR PARALLEL HYBRID ELECTRIC VEHICLE

Zhao Ziliang  Liu Dongqin  Liu Minghui  Li Jun

(Basic Research Department, FAW R&D Center, Changchun 130011)

Wang Qingnian

(College of Automobile Engineering, Jilin University, Changchun 130025)

Abstract: The logic-threshold control method is applied, namely, the high efficiency operation regions for engine and battery are controlled through setting threshold value respectively. The driver requiring torque is supplied by engine at normal condition, the motor as a load adjusted component. When the driver require great torque, the engine is assisted by motor, otherwise, the motor operates only or acts as generator to charge the battery if the battery is depleted according to battery SOC (State of charge), which keeps battery SOC in reasonable range. Simultaneity, the developing process for control strategy is detailedly explained based on real operation driving cycle, the control containments are also put forwarded for engine, motor and battery respectively. The corresponding models for components are modified to realize control strategy and development target in ADVISOR software. The simulation results showed the target be gained by developed control strategy and parameters matching, furthermore, the control containments can be only adjusted to use the control strategy under various driving cycle. The development of control strategy supplies the design conditions for HCU (Hybrid control unit) development and optimization in next step.

Key words: Hybrid electric vehicle (HEV)  Control strategy  Model  Simulation

CLC No: U463.23

国家863计划资助项目 (2003AA501500). Received 20050331, received in revised form 20051010