混联式混合动力汽车高速工况经济性研究

摘要

In order to improve highway fuel economy of series-parallel HEV, a new design proposal for the optimal engine working point based on the exhaustive method was proposed in this paper that considered facts including specific fuel consumption, motor power loss, battery power loss, and the method was verified by vehicle test. The test result shows that, fuel consumption of the designed optimal engine working point is better than other engines, and the proposal based on the exhaustive method is practicable,which can provide reference to improve highway fuel economy of series-parallel HEV.%针对混联式混合动力汽车的高速工况经济性,综合考虑发动机比油耗、电机功率损耗、电池功率损耗,提出一种基于穷举法的经济性最佳发动机工作点设计方案并进行了试验验证,试验结果表明,设计的经济性最佳发动机工作点的油耗优于其它发动机工作点,基于穷举法设计经济性最佳发动机工作点的方案合理,对改善混联式混合动力汽车高速工况经济性具有一定的参考价值.