中文摘要：

通过建立插电式混合动力汽车（plug-in hybrid electric vehicle，PHEV）的前向仿真模型，对其能耗进行仿真，并分析PHEV能耗的使用影响因素．基于Modelica物理建模语言，搭建PHEV整车动力传动及纵向动力学模型，并在标准测试工况下仿真整车各部分能耗变化．针对影响PHEV能耗的使用因素，重点仿真分析表征行驶工况的平均车速和驾驶激进性对电量消耗（charge deplete，CD）阶段电耗和电量保持（charge sustain，CS）阶段油耗的影响规律．通过分析不同车速与驾驶激进性下各部分能耗以及动力部件工作效率的影响，揭示了行驶工况对能耗影响规律的内在机理．

英文摘要：

The energy consumption of plug-in hybrid electric vehicles （PHEVs） was simulated using forward-facing stream of calculations, and the user influence factors of the economy of PHEVs were discussed. Then, the model of powertrain and longitudinal dynamics system of PHEVs were built based on Modelica language and utilized to simulate the fuel consumption of Charge-sustaining （CS） mode and electric consumption of Charge-depleting （CD） mode under the standard driving cycle. Finally, the influencing mechanism of average driving speed and driving aggressiveness on CS fuel and CD electrical consumption was obtained by analyzing the energy consumption of each consuming component and the engine thermal efficiency.