增程式电动汽车发动机多工作点控制策略  

Study on Extended-Range Electric Vehicle Engine's Multiple Operation Points Control Strategy

作　　者：王笑乐[1] 干频[2] 陈凌珊[1] 程伟[2] 孙逸神[2] 

机构地区：[1]上海工程技术大学汽车工程学院,上海201620 [2]上海汽车集团股份有限公司,上海201804

出　　处：《江南大学学报（自然科学版）》2015年第1期56-63,共8页Joural of Jiangnan University (Natural Science Edition)　

基　　金：上海工程技术大学研究生创新活动计划项目(A-0903-13-01103)

摘　　要：增程式电动汽车动力系统特殊的结构形式使发动机工作状况不必跟随负载功率需求,发动机控制策略的选择和设计具有多样性。针对目前增程式电动汽车发动机控制策略存在的不足,提出多工作点控制策略,根据行驶过程中的需求功率、车速、电池电量等约束条件,结合万有特性曲线将发动机控制在多个效率较高的优秀工作点上运行,合理设计各工作点间切换逻辑。运用Matlab/Simulink软件完成控制策略模型建立,AVL-cruise软件完成整车、驾驶员以及模拟工况模型建立,两者联合仿真试验结果证明,该策略能在保证车辆动力性、经济性的基础上,减少发动机动态波动,抑制电池大电流充放电,并能够利用路面噪声、空气噪声对发动机噪声的掩蔽效应降低高速行驶时的整车噪声。The special structure of the extended-range electric vehicle＇s power system makes its engine not to follow the load power＇s requirements,so the styles of the engine＇s control strategy are diverse. Based on the deficiencies in the existing EREV engine＇s control strategy,the multiple operation points control strategy has been proposed. This strategy makes the engine run on some excellent high efficiency operation points based on some constraint conditions such as the required power,vehicle speed,battery＇s state of charge and so on. The switching logic about changing operation points has been designed. The model of the control strategy has been built on the Matlab / Simulink software. The vehicle model,driver model and simulation working conditions model have been built on the AVL-cruise software. Simulation tests show that this strategy can achieve the vehicle＇s requirements for power performance and fuel economy,reduce the engine＇s dynamic fluctuations,and restrain the battery＇s large current charge and discharge. This strategy can reduce the noise at high speed by using the pavement noise and air noise to cover the engine noise.

关 键 词：增程式电动汽车 发动机 多工作点 

分 类 号：U469.72[机械工程—车辆工程]